source: lmdz_wrf/WRFV3/phys/module_mp_thompson.F @ 1

Last change on this file since 1 was 1, checked in by lfita, 10 years ago
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WRF: version v3.3
LMDZ: version v1818

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1!+---+-----------------------------------------------------------------+
2!.. This subroutine computes the moisture tendencies of water vapor,
3!.. cloud droplets, rain, cloud ice (pristine), snow, and graupel.
4!.. Prior to WRFv2.2 this code was based on Reisner et al (1998), but
5!.. few of those pieces remain.  A complete description is now found in
6!.. Thompson, G., P. R. Field, R. M. Rasmussen, and W. D. Hall, 2008:
7!.. Explicit Forecasts of winter precipitation using an improved bulk
8!.. microphysics scheme. Part II: Implementation of a new snow
9!.. parameterization.  Mon. Wea. Rev., 136, 5095-5115.
10!.. Prior to WRFv3.1, this code was single-moment rain prediction as
11!.. described in the reference above, but in v3.1 and higher, the
12!.. scheme is two-moment rain (predicted rain number concentration).
13!..
14!.. Most importantly, users may wish to modify the prescribed number of
15!.. cloud droplets (Nt_c; see guidelines mentioned below).  Otherwise,
16!.. users may alter the rain and graupel size distribution parameters
17!.. to use exponential (Marshal-Palmer) or generalized gamma shape.
18!.. The snow field assumes a combination of two gamma functions (from
19!.. Field et al. 2005) and would require significant modifications
20!.. throughout the entire code to alter its shape as well as accretion
21!.. rates.  Users may also alter the constants used for density of rain,
22!.. graupel, ice, and snow, but the latter is not constant when using
23!.. Paul Field's snow distribution and moments methods.  Other values
24!.. users can modify include the constants for mass and/or velocity
25!.. power law relations and assumed capacitances used in deposition/
26!.. sublimation/evaporation/melting.
27!.. Remaining values should probably be left alone.
28!..
29!..Author: Greg Thompson, NCAR-RAL, gthompsn@ucar.edu, 303-497-2805
30!..Last modified: 21 Nov 2010
31!+---+-----------------------------------------------------------------+
32!wrft:model_layer:physics
33!+---+-----------------------------------------------------------------+
34!
35      MODULE module_mp_thompson
36
37      USE module_wrf_error
38!     USE module_utility, ONLY: WRFU_Clock, WRFU_Alarm
39!     USE module_domain, ONLY : HISTORY_ALARM, Is_alarm_tstep
40
41      IMPLICIT NONE
42
43      LOGICAL, PARAMETER, PRIVATE:: iiwarm = .false.
44      INTEGER, PARAMETER, PRIVATE:: IFDRY = 0
45      REAL, PARAMETER, PRIVATE:: T_0 = 273.15
46      REAL, PARAMETER, PRIVATE:: PI = 3.1415926536
47
48!..Densities of rain, snow, graupel, and cloud ice.
49      REAL, PARAMETER, PRIVATE:: rho_w = 1000.0
50      REAL, PARAMETER, PRIVATE:: rho_s = 100.0
51      REAL, PARAMETER, PRIVATE:: rho_g = 400.0
52      REAL, PARAMETER, PRIVATE:: rho_i = 890.0
53
54!..Prescribed number of cloud droplets.  Set according to known data or
55!.. roughly 100 per cc (100.E6 m^-3) for Maritime cases and
56!.. 300 per cc (300.E6 m^-3) for Continental.  Gamma shape parameter,
57!.. mu_c, calculated based on Nt_c is important in autoconversion
58!.. scheme.
59      REAL, PARAMETER, PRIVATE:: Nt_c = 100.E6
60
61!..Generalized gamma distributions for rain, graupel and cloud ice.
62!.. N(D) = N_0 * D**mu * exp(-lamda*D);  mu=0 is exponential.
63      REAL, PARAMETER, PRIVATE:: mu_r = 0.0
64      REAL, PARAMETER, PRIVATE:: mu_g = 0.0
65      REAL, PARAMETER, PRIVATE:: mu_i = 0.0
66      REAL, PRIVATE:: mu_c
67
68!..Sum of two gamma distrib for snow (Field et al. 2005).
69!.. N(D) = M2**4/M3**3 * [Kap0*exp(-M2*Lam0*D/M3)
70!..    + Kap1*(M2/M3)**mu_s * D**mu_s * exp(-M2*Lam1*D/M3)]
71!.. M2 and M3 are the (bm_s)th and (bm_s+1)th moments respectively
72!.. calculated as function of ice water content and temperature.
73      REAL, PARAMETER, PRIVATE:: mu_s = 0.6357
74      REAL, PARAMETER, PRIVATE:: Kap0 = 490.6
75      REAL, PARAMETER, PRIVATE:: Kap1 = 17.46
76      REAL, PARAMETER, PRIVATE:: Lam0 = 20.78
77      REAL, PARAMETER, PRIVATE:: Lam1 = 3.29
78
79!..Y-intercept parameter for graupel is not constant and depends on
80!.. mixing ratio.  Also, when mu_g is non-zero, these become equiv
81!.. y-intercept for an exponential distrib and proper values are
82!.. computed based on same mixing ratio and total number concentration.
83      REAL, PARAMETER, PRIVATE:: gonv_min = 1.E4
84      REAL, PARAMETER, PRIVATE:: gonv_max = 1.E6
85
86!..Mass power law relations:  mass = am*D**bm
87!.. Snow from Field et al. (2005), others assume spherical form.
88      REAL, PARAMETER, PRIVATE:: am_r = PI*rho_w/6.0
89      REAL, PARAMETER, PRIVATE:: bm_r = 3.0
90      REAL, PARAMETER, PRIVATE:: am_s = 0.069
91      REAL, PARAMETER, PRIVATE:: bm_s = 2.0
92      REAL, PARAMETER, PRIVATE:: am_g = PI*rho_g/6.0
93      REAL, PARAMETER, PRIVATE:: bm_g = 3.0
94      REAL, PARAMETER, PRIVATE:: am_i = PI*rho_i/6.0
95      REAL, PARAMETER, PRIVATE:: bm_i = 3.0
96
97!..Fallspeed power laws relations:  v = (av*D**bv)*exp(-fv*D)
98!.. Rain from Ferrier (1994), ice, snow, and graupel from
99!.. Thompson et al (2008). Coefficient fv is zero for graupel/ice.
100      REAL, PARAMETER, PRIVATE:: av_r = 4854.0
101      REAL, PARAMETER, PRIVATE:: bv_r = 1.0
102      REAL, PARAMETER, PRIVATE:: fv_r = 195.0
103      REAL, PARAMETER, PRIVATE:: av_s = 40.0
104      REAL, PARAMETER, PRIVATE:: bv_s = 0.55
105      REAL, PARAMETER, PRIVATE:: fv_s = 125.0
106      REAL, PARAMETER, PRIVATE:: av_g = 442.0
107      REAL, PARAMETER, PRIVATE:: bv_g = 0.89
108      REAL, PARAMETER, PRIVATE:: av_i = 1847.5
109      REAL, PARAMETER, PRIVATE:: bv_i = 1.0
110
111!..Capacitance of sphere and plates/aggregates: D**3, D**2
112      REAL, PARAMETER, PRIVATE:: C_cube = 0.5
113      REAL, PARAMETER, PRIVATE:: C_sqrd = 0.3
114
115!..Collection efficiencies.  Rain/snow/graupel collection of cloud
116!.. droplets use variables (Ef_rw, Ef_sw, Ef_gw respectively) and
117!.. get computed elsewhere because they are dependent on stokes
118!.. number.
119      REAL, PARAMETER, PRIVATE:: Ef_si = 0.05
120      REAL, PARAMETER, PRIVATE:: Ef_rs = 0.95
121      REAL, PARAMETER, PRIVATE:: Ef_rg = 0.75
122      REAL, PARAMETER, PRIVATE:: Ef_ri = 0.95
123
124!..Minimum microphys values
125!.. R1 value, 1.E-12, cannot be set lower because of numerical
126!.. problems with Paul Field's moments and should not be set larger
127!.. because of truncation problems in snow/ice growth.
128      REAL, PARAMETER, PRIVATE:: R1 = 1.E-12
129      REAL, PARAMETER, PRIVATE:: R2 = 1.E-8
130      REAL, PARAMETER, PRIVATE:: eps = 1.E-29
131
132!..Constants in Cooper curve relation for cloud ice number.
133      REAL, PARAMETER, PRIVATE:: TNO = 5.0
134      REAL, PARAMETER, PRIVATE:: ATO = 0.304
135
136!..Rho_not used in fallspeed relations (rho_not/rho)**.5 adjustment.
137      REAL, PARAMETER, PRIVATE:: rho_not = 101325.0/(287.05*298.0)
138
139!..Schmidt number
140      REAL, PARAMETER, PRIVATE:: Sc = 0.632
141      REAL, PRIVATE:: Sc3
142
143!..Homogeneous freezing temperature
144      REAL, PARAMETER, PRIVATE:: HGFR = 235.16
145
146!..Water vapor and air gas constants at constant pressure
147      REAL, PARAMETER, PRIVATE:: Rv = 461.5
148      REAL, PARAMETER, PRIVATE:: oRv = 1./Rv
149      REAL, PARAMETER, PRIVATE:: R = 287.04
150      REAL, PARAMETER, PRIVATE:: Cp = 1004.0
151
152!..Enthalpy of sublimation, vaporization, and fusion at 0C.
153      REAL, PARAMETER, PRIVATE:: lsub = 2.834E6
154      REAL, PARAMETER, PRIVATE:: lvap0 = 2.5E6
155      REAL, PARAMETER, PRIVATE:: lfus = lsub - lvap0
156      REAL, PARAMETER, PRIVATE:: olfus = 1./lfus
157
158!..Ice initiates with this mass (kg), corresponding diameter calc.
159!..Min diameters and mass of cloud, rain, snow, and graupel (m, kg).
160      REAL, PARAMETER, PRIVATE:: xm0i = 1.E-12
161      REAL, PARAMETER, PRIVATE:: D0c = 1.E-6
162      REAL, PARAMETER, PRIVATE:: D0r = 50.E-6
163      REAL, PARAMETER, PRIVATE:: D0s = 200.E-6
164      REAL, PARAMETER, PRIVATE:: D0g = 250.E-6
165      REAL, PRIVATE:: D0i, xm0s, xm0g
166
167!..Lookup table dimensions
168      INTEGER, PARAMETER, PRIVATE:: nbins = 100
169      INTEGER, PARAMETER, PRIVATE:: nbc = nbins
170      INTEGER, PARAMETER, PRIVATE:: nbi = nbins
171      INTEGER, PARAMETER, PRIVATE:: nbr = nbins
172      INTEGER, PARAMETER, PRIVATE:: nbs = nbins
173      INTEGER, PARAMETER, PRIVATE:: nbg = nbins
174      INTEGER, PARAMETER, PRIVATE:: ntb_c = 37
175      INTEGER, PARAMETER, PRIVATE:: ntb_i = 64
176      INTEGER, PARAMETER, PRIVATE:: ntb_r = 37
177      INTEGER, PARAMETER, PRIVATE:: ntb_s = 28
178      INTEGER, PARAMETER, PRIVATE:: ntb_g = 28
179      INTEGER, PARAMETER, PRIVATE:: ntb_g1 = 28
180      INTEGER, PARAMETER, PRIVATE:: ntb_r1 = 37
181      INTEGER, PARAMETER, PRIVATE:: ntb_i1 = 55
182      INTEGER, PARAMETER, PRIVATE:: ntb_t = 9
183      INTEGER, PRIVATE:: nic2, nii2, nii3, nir2, nir3, nis2, nig2, nig3
184
185      DOUBLE PRECISION, DIMENSION(nbins+1):: xDx
186      DOUBLE PRECISION, DIMENSION(nbc):: Dc, dtc
187      DOUBLE PRECISION, DIMENSION(nbi):: Di, dti
188      DOUBLE PRECISION, DIMENSION(nbr):: Dr, dtr
189      DOUBLE PRECISION, DIMENSION(nbs):: Ds, dts
190      DOUBLE PRECISION, DIMENSION(nbg):: Dg, dtg
191
192!..Lookup tables for cloud water content (kg/m**3).
193      REAL, DIMENSION(ntb_c), PARAMETER, PRIVATE:: &
194      r_c = (/1.e-6,2.e-6,3.e-6,4.e-6,5.e-6,6.e-6,7.e-6,8.e-6,9.e-6, &
195              1.e-5,2.e-5,3.e-5,4.e-5,5.e-5,6.e-5,7.e-5,8.e-5,9.e-5, &
196              1.e-4,2.e-4,3.e-4,4.e-4,5.e-4,6.e-4,7.e-4,8.e-4,9.e-4, &
197              1.e-3,2.e-3,3.e-3,4.e-3,5.e-3,6.e-3,7.e-3,8.e-3,9.e-3, &
198              1.e-2/)
199
200!..Lookup tables for cloud ice content (kg/m**3).
201      REAL, DIMENSION(ntb_i), PARAMETER, PRIVATE:: &
202      r_i = (/1.e-10,2.e-10,3.e-10,4.e-10, &
203              5.e-10,6.e-10,7.e-10,8.e-10,9.e-10, &
204              1.e-9,2.e-9,3.e-9,4.e-9,5.e-9,6.e-9,7.e-9,8.e-9,9.e-9, &
205              1.e-8,2.e-8,3.e-8,4.e-8,5.e-8,6.e-8,7.e-8,8.e-8,9.e-8, &
206              1.e-7,2.e-7,3.e-7,4.e-7,5.e-7,6.e-7,7.e-7,8.e-7,9.e-7, &
207              1.e-6,2.e-6,3.e-6,4.e-6,5.e-6,6.e-6,7.e-6,8.e-6,9.e-6, &
208              1.e-5,2.e-5,3.e-5,4.e-5,5.e-5,6.e-5,7.e-5,8.e-5,9.e-5, &
209              1.e-4,2.e-4,3.e-4,4.e-4,5.e-4,6.e-4,7.e-4,8.e-4,9.e-4, &
210              1.e-3/)
211
212!..Lookup tables for rain content (kg/m**3).
213      REAL, DIMENSION(ntb_r), PARAMETER, PRIVATE:: &
214      r_r = (/1.e-6,2.e-6,3.e-6,4.e-6,5.e-6,6.e-6,7.e-6,8.e-6,9.e-6, &
215              1.e-5,2.e-5,3.e-5,4.e-5,5.e-5,6.e-5,7.e-5,8.e-5,9.e-5, &
216              1.e-4,2.e-4,3.e-4,4.e-4,5.e-4,6.e-4,7.e-4,8.e-4,9.e-4, &
217              1.e-3,2.e-3,3.e-3,4.e-3,5.e-3,6.e-3,7.e-3,8.e-3,9.e-3, &
218              1.e-2/)
219
220!..Lookup tables for graupel content (kg/m**3).
221      REAL, DIMENSION(ntb_g), PARAMETER, PRIVATE:: &
222      r_g = (/1.e-5,2.e-5,3.e-5,4.e-5,5.e-5,6.e-5,7.e-5,8.e-5,9.e-5, &
223              1.e-4,2.e-4,3.e-4,4.e-4,5.e-4,6.e-4,7.e-4,8.e-4,9.e-4, &
224              1.e-3,2.e-3,3.e-3,4.e-3,5.e-3,6.e-3,7.e-3,8.e-3,9.e-3, &
225              1.e-2/)
226
227!..Lookup tables for snow content (kg/m**3).
228      REAL, DIMENSION(ntb_s), PARAMETER, PRIVATE:: &
229      r_s = (/1.e-5,2.e-5,3.e-5,4.e-5,5.e-5,6.e-5,7.e-5,8.e-5,9.e-5, &
230              1.e-4,2.e-4,3.e-4,4.e-4,5.e-4,6.e-4,7.e-4,8.e-4,9.e-4, &
231              1.e-3,2.e-3,3.e-3,4.e-3,5.e-3,6.e-3,7.e-3,8.e-3,9.e-3, &
232              1.e-2/)
233
234!..Lookup tables for rain y-intercept parameter (/m**4).
235      REAL, DIMENSION(ntb_r1), PARAMETER, PRIVATE:: &
236      N0r_exp = (/1.e6,2.e6,3.e6,4.e6,5.e6,6.e6,7.e6,8.e6,9.e6, &
237                  1.e7,2.e7,3.e7,4.e7,5.e7,6.e7,7.e7,8.e7,9.e7, &
238                  1.e8,2.e8,3.e8,4.e8,5.e8,6.e8,7.e8,8.e8,9.e8, &
239                  1.e9,2.e9,3.e9,4.e9,5.e9,6.e9,7.e9,8.e9,9.e9, &
240                  1.e10/)
241
242!..Lookup tables for graupel y-intercept parameter (/m**4).
243      REAL, DIMENSION(ntb_g1), PARAMETER, PRIVATE:: &
244      N0g_exp = (/1.e4,2.e4,3.e4,4.e4,5.e4,6.e4,7.e4,8.e4,9.e4, &
245                  1.e5,2.e5,3.e5,4.e5,5.e5,6.e5,7.e5,8.e5,9.e5, &
246                  1.e6,2.e6,3.e6,4.e6,5.e6,6.e6,7.e6,8.e6,9.e6, &
247                  1.e7/)
248
249!..Lookup tables for ice number concentration (/m**3).
250      REAL, DIMENSION(ntb_i1), PARAMETER, PRIVATE:: &
251      Nt_i = (/1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0, &
252               1.e1,2.e1,3.e1,4.e1,5.e1,6.e1,7.e1,8.e1,9.e1, &
253               1.e2,2.e2,3.e2,4.e2,5.e2,6.e2,7.e2,8.e2,9.e2, &
254               1.e3,2.e3,3.e3,4.e3,5.e3,6.e3,7.e3,8.e3,9.e3, &
255               1.e4,2.e4,3.e4,4.e4,5.e4,6.e4,7.e4,8.e4,9.e4, &
256               1.e5,2.e5,3.e5,4.e5,5.e5,6.e5,7.e5,8.e5,9.e5, &
257               1.e6/)
258
259!..For snow moments conversions (from Field et al. 2005)
260      REAL, DIMENSION(10), PARAMETER, PRIVATE:: &
261      sa = (/ 5.065339, -0.062659, -3.032362, 0.029469, -0.000285, &
262              0.31255,   0.000204,  0.003199, 0.0,      -0.015952/)
263      REAL, DIMENSION(10), PARAMETER, PRIVATE:: &
264      sb = (/ 0.476221, -0.015896,  0.165977, 0.007468, -0.000141, &
265              0.060366,  0.000079,  0.000594, 0.0,      -0.003577/)
266
267!..Temperatures (5 C interval 0 to -40) used in lookup tables.
268      REAL, DIMENSION(ntb_t), PARAMETER, PRIVATE:: &
269      Tc = (/-0.01, -5., -10., -15., -20., -25., -30., -35., -40./)
270
271!..Lookup tables for various accretion/collection terms.
272!.. ntb_x refers to the number of elements for rain, snow, graupel,
273!.. and temperature array indices.  Variables beginning with t-p/c/m/n
274!.. represent lookup tables.  Save compile-time memory by making
275!.. allocatable (2009Jun12, J. Michalakes).
276      INTEGER, PARAMETER, PRIVATE:: R8SIZE = 8
277      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:,:,:)::             &
278                tcg_racg, tmr_racg, tcr_gacr, tmg_gacr,                 &
279                tnr_racg, tnr_gacr
280      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:,:,:)::             &
281                tcs_racs1, tmr_racs1, tcs_racs2, tmr_racs2,             &
282                tcr_sacr1, tms_sacr1, tcr_sacr2, tms_sacr2,             &
283                tnr_racs1, tnr_racs2, tnr_sacr1, tnr_sacr2
284      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:)::                 &
285                tpi_qcfz, tni_qcfz
286      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:,:)::               &
287                tpi_qrfz, tpg_qrfz, tni_qrfz, tnr_qrfz
288      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:)::                 &
289                tps_iaus, tni_iaus, tpi_ide
290      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:):: t_Efrw
291      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:):: t_Efsw
292      REAL (KIND=R8SIZE), ALLOCATABLE, DIMENSION(:,:,:):: tnr_rev
293
294!..Variables holding a bunch of exponents and gamma values (cloud water,
295!.. cloud ice, rain, snow, then graupel).
296      REAL, DIMENSION(3), PRIVATE:: cce, ccg
297      REAL, PRIVATE::  ocg1, ocg2
298      REAL, DIMENSION(7), PRIVATE:: cie, cig
299      REAL, PRIVATE:: oig1, oig2, obmi
300      REAL, DIMENSION(13), PRIVATE:: cre, crg
301      REAL, PRIVATE:: ore1, org1, org2, org3, obmr
302      REAL, DIMENSION(18), PRIVATE:: cse, csg
303      REAL, PRIVATE:: oams, obms, ocms
304      REAL, DIMENSION(12), PRIVATE:: cge, cgg
305      REAL, PRIVATE:: oge1, ogg1, ogg2, ogg3, oamg, obmg, ocmg
306
307!..Declaration of precomputed constants in various rate eqns.
308      REAL:: t1_qr_qc, t1_qr_qi, t2_qr_qi, t1_qg_qc, t1_qs_qc, t1_qs_qi
309      REAL:: t1_qr_ev, t2_qr_ev
310      REAL:: t1_qs_sd, t2_qs_sd, t1_qg_sd, t2_qg_sd
311      REAL:: t1_qs_me, t2_qs_me, t1_qg_me, t2_qg_me
312
313      CHARACTER*256:: mp_debug
314
315!+---+
316!+---+-----------------------------------------------------------------+
317!..END DECLARATIONS
318!+---+-----------------------------------------------------------------+
319!+---+
320!ctrlL
321
322      CONTAINS
323
324      SUBROUTINE thompson_init
325
326      IMPLICIT NONE
327
328      INTEGER:: i, j, k, m, n
329      LOGICAL:: micro_init
330
331!..Allocate space for lookup tables (J. Michalakes 2009Jun08).
332      micro_init = .FALSE.
333
334      if (.NOT. ALLOCATED(tcg_racg) ) then
335         ALLOCATE(tcg_racg(ntb_g1,ntb_g,ntb_r1,ntb_r))
336         micro_init = .TRUE.
337      endif
338
339      if (.NOT. ALLOCATED(tmr_racg)) ALLOCATE(tmr_racg(ntb_g1,ntb_g,ntb_r1,ntb_r))
340      if (.NOT. ALLOCATED(tcr_gacr)) ALLOCATE(tcr_gacr(ntb_g1,ntb_g,ntb_r1,ntb_r))
341      if (.NOT. ALLOCATED(tmg_gacr)) ALLOCATE(tmg_gacr(ntb_g1,ntb_g,ntb_r1,ntb_r))
342      if (.NOT. ALLOCATED(tnr_racg)) ALLOCATE(tnr_racg(ntb_g1,ntb_g,ntb_r1,ntb_r))
343      if (.NOT. ALLOCATED(tnr_gacr)) ALLOCATE(tnr_gacr(ntb_g1,ntb_g,ntb_r1,ntb_r))
344
345      if (.NOT. ALLOCATED(tcs_racs1)) ALLOCATE(tcs_racs1(ntb_s,ntb_t,ntb_r1,ntb_r))
346      if (.NOT. ALLOCATED(tmr_racs1)) ALLOCATE(tmr_racs1(ntb_s,ntb_t,ntb_r1,ntb_r))
347      if (.NOT. ALLOCATED(tcs_racs2)) ALLOCATE(tcs_racs2(ntb_s,ntb_t,ntb_r1,ntb_r))
348      if (.NOT. ALLOCATED(tmr_racs2)) ALLOCATE(tmr_racs2(ntb_s,ntb_t,ntb_r1,ntb_r))
349      if (.NOT. ALLOCATED(tcr_sacr1)) ALLOCATE(tcr_sacr1(ntb_s,ntb_t,ntb_r1,ntb_r))
350      if (.NOT. ALLOCATED(tms_sacr1)) ALLOCATE(tms_sacr1(ntb_s,ntb_t,ntb_r1,ntb_r))
351      if (.NOT. ALLOCATED(tcr_sacr2)) ALLOCATE(tcr_sacr2(ntb_s,ntb_t,ntb_r1,ntb_r))
352      if (.NOT. ALLOCATED(tms_sacr2)) ALLOCATE(tms_sacr2(ntb_s,ntb_t,ntb_r1,ntb_r))
353      if (.NOT. ALLOCATED(tnr_racs1)) ALLOCATE(tnr_racs1(ntb_s,ntb_t,ntb_r1,ntb_r))
354      if (.NOT. ALLOCATED(tnr_racs2)) ALLOCATE(tnr_racs2(ntb_s,ntb_t,ntb_r1,ntb_r))
355      if (.NOT. ALLOCATED(tnr_sacr1)) ALLOCATE(tnr_sacr1(ntb_s,ntb_t,ntb_r1,ntb_r))
356      if (.NOT. ALLOCATED(tnr_sacr2)) ALLOCATE(tnr_sacr2(ntb_s,ntb_t,ntb_r1,ntb_r))
357
358      if (.NOT. ALLOCATED(tpi_qcfz)) ALLOCATE(tpi_qcfz(ntb_c,45))
359      if (.NOT. ALLOCATED(tni_qcfz)) ALLOCATE(tni_qcfz(ntb_c,45))
360
361      if (.NOT. ALLOCATED(tpi_qrfz)) ALLOCATE(tpi_qrfz(ntb_r,ntb_r1,45))
362      if (.NOT. ALLOCATED(tpg_qrfz)) ALLOCATE(tpg_qrfz(ntb_r,ntb_r1,45))
363      if (.NOT. ALLOCATED(tni_qrfz)) ALLOCATE(tni_qrfz(ntb_r,ntb_r1,45))
364      if (.NOT. ALLOCATED(tnr_qrfz)) ALLOCATE(tnr_qrfz(ntb_r,ntb_r1,45))
365
366      if (.NOT. ALLOCATED(tps_iaus)) ALLOCATE(tps_iaus(ntb_i,ntb_i1))
367      if (.NOT. ALLOCATED(tni_iaus)) ALLOCATE(tni_iaus(ntb_i,ntb_i1))
368      if (.NOT. ALLOCATED(tpi_ide)) ALLOCATE(tpi_ide(ntb_i,ntb_i1))
369
370      if (.NOT. ALLOCATED(t_Efrw)) ALLOCATE(t_Efrw(nbr,nbc))
371      if (.NOT. ALLOCATED(t_Efsw)) ALLOCATE(t_Efsw(nbs,nbc))
372
373      if (.NOT. ALLOCATED(tnr_rev)) ALLOCATE(tnr_rev(nbr, ntb_r1, ntb_r))
374
375      if (micro_init) then
376
377!..From Martin et al. (1994), assign gamma shape parameter mu for cloud
378!.. drops according to general dispersion characteristics (disp=~0.25
379!.. for Maritime and 0.45 for Continental).
380!.. disp=SQRT((mu+2)/(mu+1) - 1) so mu varies from 15 for Maritime
381!.. to 2 for really dirty air.
382      mu_c = MIN(15., (1000.E6/Nt_c + 2.))
383
384!..Schmidt number to one-third used numerous times.
385      Sc3 = Sc**(1./3.)
386
387!..Compute min ice diam from mass, min snow/graupel mass from diam.
388      D0i = (xm0i/am_i)**(1./bm_i)
389      xm0s = am_s * D0s**bm_s
390      xm0g = am_g * D0g**bm_g
391
392!..These constants various exponents and gamma() assoc with cloud,
393!.. rain, snow, and graupel.
394      cce(1) = mu_c + 1.
395      cce(2) = bm_r + mu_c + 1.
396      cce(3) = bm_r + mu_c + 4.
397      ccg(1) = WGAMMA(cce(1))
398      ccg(2) = WGAMMA(cce(2))
399      ccg(3) = WGAMMA(cce(3))
400      ocg1 = 1./ccg(1)
401      ocg2 = 1./ccg(2)
402
403      cie(1) = mu_i + 1.
404      cie(2) = bm_i + mu_i + 1.
405      cie(3) = bm_i + mu_i + bv_i + 1.
406      cie(4) = mu_i + bv_i + 1.
407      cie(5) = mu_i + 2.
408      cie(6) = bm_i*0.5 + mu_i + bv_i + 1.
409      cie(7) = bm_i*0.5 + mu_i + 1.
410      cig(1) = WGAMMA(cie(1))
411      cig(2) = WGAMMA(cie(2))
412      cig(3) = WGAMMA(cie(3))
413      cig(4) = WGAMMA(cie(4))
414      cig(5) = WGAMMA(cie(5))
415      cig(6) = WGAMMA(cie(6))
416      cig(7) = WGAMMA(cie(7))
417      oig1 = 1./cig(1)
418      oig2 = 1./cig(2)
419      obmi = 1./bm_i
420
421      cre(1) = bm_r + 1.
422      cre(2) = mu_r + 1.
423      cre(3) = bm_r + mu_r + 1.
424      cre(4) = bm_r*2. + mu_r + 1.
425      cre(5) = mu_r + bv_r + 1.
426      cre(6) = bm_r + mu_r + bv_r + 1.
427      cre(7) = bm_r*0.5 + mu_r + bv_r + 1.
428      cre(8) = bm_r + mu_r + bv_r + 3.
429      cre(9) = mu_r + bv_r + 3.
430      cre(10) = mu_r + 2.
431      cre(11) = 0.5*(bv_r + 5. + 2.*mu_r)
432      cre(12) = bm_r*0.5 + mu_r + 1.
433      cre(13) = bm_r*2. + mu_r + bv_r + 1.
434      do n = 1, 13
435         crg(n) = WGAMMA(cre(n))
436      enddo
437      obmr = 1./bm_r
438      ore1 = 1./cre(1)
439      org1 = 1./crg(1)
440      org2 = 1./crg(2)
441      org3 = 1./crg(3)
442
443      cse(1) = bm_s + 1.
444      cse(2) = bm_s + 2.
445      cse(3) = bm_s*2.
446      cse(4) = bm_s + bv_s + 1.
447      cse(5) = bm_s*2. + bv_s + 1.
448      cse(6) = bm_s*2. + 1.
449      cse(7) = bm_s + mu_s + 1.
450      cse(8) = bm_s + mu_s + 2.
451      cse(9) = bm_s + mu_s + 3.
452      cse(10) = bm_s + mu_s + bv_s + 1.
453      cse(11) = bm_s*2. + mu_s + bv_s + 1.
454      cse(12) = bm_s*2. + mu_s + 1.
455      cse(13) = bv_s + 2.
456      cse(14) = bm_s + bv_s
457      cse(15) = mu_s + 1.
458      cse(16) = 1.0 + (1.0 + bv_s)/2.
459      cse(17) = cse(16) + mu_s + 1.
460      cse(18) = bv_s + mu_s + 3.
461      do n = 1, 18
462         csg(n) = WGAMMA(cse(n))
463      enddo
464      oams = 1./am_s
465      obms = 1./bm_s
466      ocms = oams**obms
467
468      cge(1) = bm_g + 1.
469      cge(2) = mu_g + 1.
470      cge(3) = bm_g + mu_g + 1.
471      cge(4) = bm_g*2. + mu_g + 1.
472      cge(5) = bm_g*2. + mu_g + bv_g + 1.
473      cge(6) = bm_g + mu_g + bv_g + 1.
474      cge(7) = bm_g + mu_g + bv_g + 2.
475      cge(8) = bm_g + mu_g + bv_g + 3.
476      cge(9) = mu_g + bv_g + 3.
477      cge(10) = mu_g + 2.
478      cge(11) = 0.5*(bv_g + 5. + 2.*mu_g)
479      cge(12) = 0.5*(bv_g + 5.) + mu_g
480      do n = 1, 12
481         cgg(n) = WGAMMA(cge(n))
482      enddo
483      oamg = 1./am_g
484      obmg = 1./bm_g
485      ocmg = oamg**obmg
486      oge1 = 1./cge(1)
487      ogg1 = 1./cgg(1)
488      ogg2 = 1./cgg(2)
489      ogg3 = 1./cgg(3)
490
491!+---+-----------------------------------------------------------------+
492!..Simplify various rate eqns the best we can now.
493!+---+-----------------------------------------------------------------+
494
495!..Rain collecting cloud water and cloud ice
496      t1_qr_qc = PI*.25*av_r * crg(9)
497      t1_qr_qi = PI*.25*av_r * crg(9)
498      t2_qr_qi = PI*.25*am_r*av_r * crg(8)
499
500!..Graupel collecting cloud water
501      t1_qg_qc = PI*.25*av_g * cgg(9)
502
503!..Snow collecting cloud water
504      t1_qs_qc = PI*.25*av_s
505
506!..Snow collecting cloud ice
507      t1_qs_qi = PI*.25*av_s
508
509!..Evaporation of rain; ignore depositional growth of rain.
510      t1_qr_ev = 0.78 * crg(10)
511      t2_qr_ev = 0.308*Sc3*SQRT(av_r) * crg(11)
512
513!..Sublimation/depositional growth of snow
514      t1_qs_sd = 0.86
515      t2_qs_sd = 0.28*Sc3*SQRT(av_s)
516
517!..Melting of snow
518      t1_qs_me = PI*4.*C_sqrd*olfus * 0.86
519      t2_qs_me = PI*4.*C_sqrd*olfus * 0.28*Sc3*SQRT(av_s)
520
521!..Sublimation/depositional growth of graupel
522      t1_qg_sd = 0.86 * cgg(10)
523      t2_qg_sd = 0.28*Sc3*SQRT(av_g) * cgg(11)
524
525!..Melting of graupel
526      t1_qg_me = PI*4.*C_cube*olfus * 0.86 * cgg(10)
527      t2_qg_me = PI*4.*C_cube*olfus * 0.28*Sc3*SQRT(av_g) * cgg(11)
528
529!..Constants for helping find lookup table indexes.
530      nic2 = NINT(ALOG10(r_c(1)))
531      nii2 = NINT(ALOG10(r_i(1)))
532      nii3 = NINT(ALOG10(Nt_i(1)))
533      nir2 = NINT(ALOG10(r_r(1)))
534      nir3 = NINT(ALOG10(N0r_exp(1)))
535      nis2 = NINT(ALOG10(r_s(1)))
536      nig2 = NINT(ALOG10(r_g(1)))
537      nig3 = NINT(ALOG10(N0g_exp(1)))
538
539!..Create bins of cloud water (from min diameter up to 100 microns).
540      Dc(1) = D0c*1.0d0
541      dtc(1) = D0c*1.0d0
542      do n = 2, nbc
543         Dc(n) = Dc(n-1) + 1.0D-6
544         dtc(n) = (Dc(n) - Dc(n-1))
545      enddo
546
547!..Create bins of cloud ice (from min diameter up to 5x min snow size).
548      xDx(1) = D0i*1.0d0
549      xDx(nbi+1) = 5.0d0*D0s
550      do n = 2, nbi
551         xDx(n) = DEXP(DFLOAT(n-1)/DFLOAT(nbi) &
552                  *DLOG(xDx(nbi+1)/xDx(1)) +DLOG(xDx(1)))
553      enddo
554      do n = 1, nbi
555         Di(n) = DSQRT(xDx(n)*xDx(n+1))
556         dti(n) = xDx(n+1) - xDx(n)
557      enddo
558
559!..Create bins of rain (from min diameter up to 5 mm).
560      xDx(1) = D0r*1.0d0
561      xDx(nbr+1) = 0.005d0
562      do n = 2, nbr
563         xDx(n) = DEXP(DFLOAT(n-1)/DFLOAT(nbr) &
564                  *DLOG(xDx(nbr+1)/xDx(1)) +DLOG(xDx(1)))
565      enddo
566      do n = 1, nbr
567         Dr(n) = DSQRT(xDx(n)*xDx(n+1))
568         dtr(n) = xDx(n+1) - xDx(n)
569      enddo
570
571!..Create bins of snow (from min diameter up to 2 cm).
572      xDx(1) = D0s*1.0d0
573      xDx(nbs+1) = 0.02d0
574      do n = 2, nbs
575         xDx(n) = DEXP(DFLOAT(n-1)/DFLOAT(nbs) &
576                  *DLOG(xDx(nbs+1)/xDx(1)) +DLOG(xDx(1)))
577      enddo
578      do n = 1, nbs
579         Ds(n) = DSQRT(xDx(n)*xDx(n+1))
580         dts(n) = xDx(n+1) - xDx(n)
581      enddo
582
583!..Create bins of graupel (from min diameter up to 5 cm).
584      xDx(1) = D0g*1.0d0
585      xDx(nbg+1) = 0.05d0
586      do n = 2, nbg
587         xDx(n) = DEXP(DFLOAT(n-1)/DFLOAT(nbg) &
588                  *DLOG(xDx(nbg+1)/xDx(1)) +DLOG(xDx(1)))
589      enddo
590      do n = 1, nbg
591         Dg(n) = DSQRT(xDx(n)*xDx(n+1))
592         dtg(n) = xDx(n+1) - xDx(n)
593      enddo
594
595!+---+-----------------------------------------------------------------+
596!..Create lookup tables for most costly calculations.
597!+---+-----------------------------------------------------------------+
598
599      do m = 1, ntb_r
600         do k = 1, ntb_r1
601            do j = 1, ntb_g
602               do i = 1, ntb_g1
603                  tcg_racg(i,j,k,m) = 0.0d0
604                  tmr_racg(i,j,k,m) = 0.0d0
605                  tcr_gacr(i,j,k,m) = 0.0d0
606                  tmg_gacr(i,j,k,m) = 0.0d0
607                  tnr_racg(i,j,k,m) = 0.0d0
608                  tnr_gacr(i,j,k,m) = 0.0d0
609               enddo
610            enddo
611         enddo
612      enddo
613
614      do m = 1, ntb_r
615         do k = 1, ntb_r1
616            do j = 1, ntb_t
617               do i = 1, ntb_s
618                  tcs_racs1(i,j,k,m) = 0.0d0
619                  tmr_racs1(i,j,k,m) = 0.0d0
620                  tcs_racs2(i,j,k,m) = 0.0d0
621                  tmr_racs2(i,j,k,m) = 0.0d0
622                  tcr_sacr1(i,j,k,m) = 0.0d0
623                  tms_sacr1(i,j,k,m) = 0.0d0
624                  tcr_sacr2(i,j,k,m) = 0.0d0
625                  tms_sacr2(i,j,k,m) = 0.0d0
626                  tnr_racs1(i,j,k,m) = 0.0d0
627                  tnr_racs2(i,j,k,m) = 0.0d0
628                  tnr_sacr1(i,j,k,m) = 0.0d0
629                  tnr_sacr2(i,j,k,m) = 0.0d0
630               enddo
631            enddo
632         enddo
633      enddo
634
635      do k = 1, 45
636         do j = 1, ntb_r1
637            do i = 1, ntb_r
638               tpi_qrfz(i,j,k) = 0.0d0
639               tni_qrfz(i,j,k) = 0.0d0
640               tpg_qrfz(i,j,k) = 0.0d0
641               tnr_qrfz(i,j,k) = 0.0d0
642            enddo
643         enddo
644         do i = 1, ntb_c
645            tpi_qcfz(i,k) = 0.0d0
646            tni_qcfz(i,k) = 0.0d0
647         enddo
648      enddo
649
650      do j = 1, ntb_i1
651         do i = 1, ntb_i
652            tps_iaus(i,j) = 0.0d0
653            tni_iaus(i,j) = 0.0d0
654            tpi_ide(i,j) = 0.0d0
655         enddo
656      enddo
657
658      do j = 1, nbc
659         do i = 1, nbr
660            t_Efrw(i,j) = 0.0
661         enddo
662         do i = 1, nbs
663            t_Efsw(i,j) = 0.0
664         enddo
665      enddo
666
667      do k = 1, ntb_r
668         do j = 1, ntb_r1
669            do i = 1, nbr
670               tnr_rev(i,j,k) = 0.0d0
671            enddo
672         enddo
673      enddo
674
675      CALL wrf_debug(150, 'CREATING MICROPHYSICS LOOKUP TABLES ... ')
676      WRITE (wrf_err_message, '(a, f5.2, a, f5.2, a, f5.2, a, f5.2)') &
677          ' using: mu_c=',mu_c,' mu_i=',mu_i,' mu_r=',mu_r,' mu_g=',mu_g
678      CALL wrf_debug(150, wrf_err_message)
679
680!..Collision efficiency between rain/snow and cloud water.
681      CALL wrf_debug(200, '  creating qc collision eff tables')
682      call table_Efrw
683      call table_Efsw
684
685!..Drop evaporation.
686!     CALL wrf_debug(200, '  creating rain evap table')
687!     call table_dropEvap
688
689!..Initialize various constants for computing radar reflectivity.
690!     call radar_init
691
692      if (.not. iiwarm) then
693
694!..Rain collecting graupel & graupel collecting rain.
695      CALL wrf_debug(200, '  creating rain collecting graupel table')
696      call qr_acr_qg
697
698!..Rain collecting snow & snow collecting rain.
699      CALL wrf_debug(200, '  creating rain collecting snow table')
700      call qr_acr_qs
701
702!..Cloud water and rain freezing (Bigg, 1953).
703      CALL wrf_debug(200, '  creating freezing of water drops table')
704      call freezeH2O
705
706!..Conversion of some ice mass into snow category.
707      CALL wrf_debug(200, '  creating ice converting to snow table')
708      call qi_aut_qs
709
710      endif
711
712      CALL wrf_debug(150, ' ... DONE microphysical lookup tables')
713
714      endif
715
716      END SUBROUTINE thompson_init
717!+---+-----------------------------------------------------------------+
718!ctrlL
719!+---+-----------------------------------------------------------------+
720!..This is a wrapper routine designed to transfer values from 3D to 1D.
721!+---+-----------------------------------------------------------------+
722      SUBROUTINE mp_gt_driver(qv, qc, qr, qi, qs, qg, ni, nr, &
723                              th, pii, p, dz, dt_in, itimestep, &
724                              RAINNC, RAINNCV, &
725                              SNOWNC, SNOWNCV, &
726                              GRAUPELNC, GRAUPELNCV, &
727                              SR, &
728!                             refl_10cm, grid_clock, grid_alarms, &
729                              ids,ide, jds,jde, kds,kde, &             ! domain dims
730                              ims,ime, jms,jme, kms,kme, &             ! memory dims
731                              its,ite, jts,jte, kts,kte)               ! tile dims
732
733      implicit none
734
735!..Subroutine arguments
736      INTEGER, INTENT(IN):: ids,ide, jds,jde, kds,kde, &
737                            ims,ime, jms,jme, kms,kme, &
738                            its,ite, jts,jte, kts,kte
739      REAL, DIMENSION(ims:ime, kms:kme, jms:jme), INTENT(INOUT):: &
740                          qv, qc, qr, qi, qs, qg, ni, nr, th
741      REAL, DIMENSION(ims:ime, kms:kme, jms:jme), INTENT(IN):: &
742                          pii, p, dz
743      REAL, DIMENSION(ims:ime, jms:jme), INTENT(INOUT):: &
744                          RAINNC, RAINNCV, SR
745      REAL, DIMENSION(ims:ime, jms:jme), OPTIONAL, INTENT(INOUT)::      &
746                          SNOWNC, SNOWNCV, GRAUPELNC, GRAUPELNCV
747!     REAL, DIMENSION(ims:ime, kms:kme, jms:jme), INTENT(INOUT)::       &
748!                         refl_10cm
749      REAL, INTENT(IN):: dt_in
750      INTEGER, INTENT(IN):: itimestep
751
752!     TYPE (WRFU_Clock):: grid_clock
753!     TYPE (WRFU_Alarm), POINTER:: grid_alarms(:)
754
755!..Local variables
756      REAL, DIMENSION(kts:kte):: &
757                          qv1d, qc1d, qi1d, qr1d, qs1d, qg1d, ni1d, &
758                          nr1d, t1d, p1d, dz1d, dBZ
759      REAL, DIMENSION(its:ite, jts:jte):: pcp_ra, pcp_sn, pcp_gr, pcp_ic
760      REAL:: dt, pptrain, pptsnow, pptgraul, pptice
761      REAL:: qc_max, qr_max, qs_max, qi_max, qg_max, ni_max, nr_max
762      INTEGER:: i, j, k
763      INTEGER:: imax_qc,imax_qr,imax_qi,imax_qs,imax_qg,imax_ni,imax_nr
764      INTEGER:: jmax_qc,jmax_qr,jmax_qi,jmax_qs,jmax_qg,jmax_ni,jmax_nr
765      INTEGER:: kmax_qc,kmax_qr,kmax_qi,kmax_qs,kmax_qg,kmax_ni,kmax_nr
766      INTEGER:: i_start, j_start, i_end, j_end
767      LOGICAL:: dBZ_tstep
768
769!+---+
770
771      dBZ_tstep = .false.
772!     if ( Is_alarm_tstep(grid_clock, grid_alarms(HISTORY_ALARM)) ) then
773!        dBZ_tstep = .true.
774!     endif
775
776      i_start = its
777      j_start = jts
778      i_end   = ite
779      j_end   = jte
780
781!..For idealized testing by developer.
782      if ( (ide-ids+1).gt.4 .and. (jde-jds+1).lt.4 .and.                &
783           ids.eq.its.and.ide.eq.ite.and.jds.eq.jts.and.jde.eq.jte) then
784         i_start = its + 2
785         i_end   = ite - 1
786         j_start = jts
787         j_end   = jte
788      endif
789
790      dt = dt_in
791   
792      qc_max = 0.
793      qr_max = 0.
794      qs_max = 0.
795      qi_max = 0.
796      qg_max = 0
797      ni_max = 0.
798      nr_max = 0.
799      imax_qc = 0
800      imax_qr = 0
801      imax_qi = 0
802      imax_qs = 0
803      imax_qg = 0
804      imax_ni = 0
805      imax_nr = 0
806      jmax_qc = 0
807      jmax_qr = 0
808      jmax_qi = 0
809      jmax_qs = 0
810      jmax_qg = 0
811      jmax_ni = 0
812      jmax_nr = 0
813      kmax_qc = 0
814      kmax_qr = 0
815      kmax_qi = 0
816      kmax_qs = 0
817      kmax_qg = 0
818      kmax_ni = 0
819      kmax_nr = 0
820      do i = 1, 256
821         mp_debug(i:i) = char(0)
822      enddo
823
824      j_loop:  do j = j_start, j_end
825      i_loop:  do i = i_start, i_end
826
827         pptrain = 0.
828         pptsnow = 0.
829         pptgraul = 0.
830         pptice = 0.
831         RAINNCV(i,j) = 0.
832         IF ( PRESENT (snowncv) ) THEN
833            SNOWNCV(i,j) = 0.
834         ENDIF
835         IF ( PRESENT (graupelncv) ) THEN
836            GRAUPELNCV(i,j) = 0.
837         ENDIF
838         SR(i,j) = 0.
839
840         do k = kts, kte
841            t1d(k) = th(i,k,j)*pii(i,k,j)
842            p1d(k) = p(i,k,j)
843            dz1d(k) = dz(i,k,j)
844            qv1d(k) = qv(i,k,j)
845            qc1d(k) = qc(i,k,j)
846            qi1d(k) = qi(i,k,j)
847            qr1d(k) = qr(i,k,j)
848            qs1d(k) = qs(i,k,j)
849            qg1d(k) = qg(i,k,j)
850            ni1d(k) = ni(i,k,j)
851            nr1d(k) = nr(i,k,j)
852         enddo
853
854         call mp_thompson(qv1d, qc1d, qi1d, qr1d, qs1d, qg1d, ni1d, &
855                      nr1d, t1d, p1d, dz1d, &
856                      pptrain, pptsnow, pptgraul, pptice, &
857                      kts, kte, dt, i, j)
858
859         pcp_ra(i,j) = pptrain
860         pcp_sn(i,j) = pptsnow
861         pcp_gr(i,j) = pptgraul
862         pcp_ic(i,j) = pptice
863         RAINNCV(i,j) = pptrain + pptsnow + pptgraul + pptice
864         RAINNC(i,j) = RAINNC(i,j) + pptrain + pptsnow + pptgraul + pptice
865         IF ( PRESENT(snowncv) .AND. PRESENT(snownc) ) THEN
866            SNOWNCV(i,j) = pptsnow + pptice
867            SNOWNC(i,j) = SNOWNC(i,j) + pptsnow + pptice
868         ENDIF
869         IF ( PRESENT(graupelncv) .AND. PRESENT(graupelnc) ) THEN
870            GRAUPELNCV(i,j) = pptgraul
871            GRAUPELNC(i,j) = GRAUPELNC(i,j) + pptgraul
872         ENDIF
873         SR(i,j) = (pptsnow + pptgraul + pptice)/(RAINNCV(i,j)+1.e-12)
874
875         do k = kts, kte
876            qv(i,k,j) = qv1d(k)
877            qc(i,k,j) = qc1d(k)
878            qi(i,k,j) = qi1d(k)
879            qr(i,k,j) = qr1d(k)
880            qs(i,k,j) = qs1d(k)
881            qg(i,k,j) = qg1d(k)
882            ni(i,k,j) = ni1d(k)
883            nr(i,k,j) = nr1d(k)
884            th(i,k,j) = t1d(k)/pii(i,k,j)
885            if (qc1d(k) .gt. qc_max) then
886             imax_qc = i
887             jmax_qc = j
888             kmax_qc = k
889             qc_max = qc1d(k)
890            elseif (qc1d(k) .lt. 0.0) then
891             write(mp_debug,*) 'WARNING, negative qc ', qc1d(k),        &
892                        ' at i,j,k=', i,j,k
893             CALL wrf_debug(150, mp_debug)
894            endif
895            if (qr1d(k) .gt. qr_max) then
896             imax_qr = i
897             jmax_qr = j
898             kmax_qr = k
899             qr_max = qr1d(k)
900            elseif (qr1d(k) .lt. 0.0) then
901             write(mp_debug,*) 'WARNING, negative qr ', qr1d(k),        &
902                        ' at i,j,k=', i,j,k
903             CALL wrf_debug(150, mp_debug)
904            endif
905            if (nr1d(k) .gt. nr_max) then
906             imax_nr = i
907             jmax_nr = j
908             kmax_nr = k
909             nr_max = nr1d(k)
910            elseif (nr1d(k) .lt. 0.0) then
911             write(mp_debug,*) 'WARNING, negative nr ', nr1d(k),        &
912                        ' at i,j,k=', i,j,k
913             CALL wrf_debug(150, mp_debug)
914            endif
915            if (qs1d(k) .gt. qs_max) then
916             imax_qs = i
917             jmax_qs = j
918             kmax_qs = k
919             qs_max = qs1d(k)
920            elseif (qs1d(k) .lt. 0.0) then
921             write(mp_debug,*) 'WARNING, negative qs ', qs1d(k),        &
922                        ' at i,j,k=', i,j,k
923             CALL wrf_debug(150, mp_debug)
924            endif
925            if (qi1d(k) .gt. qi_max) then
926             imax_qi = i
927             jmax_qi = j
928             kmax_qi = k
929             qi_max = qi1d(k)
930            elseif (qi1d(k) .lt. 0.0) then
931             write(mp_debug,*) 'WARNING, negative qi ', qi1d(k),        &
932                        ' at i,j,k=', i,j,k
933             CALL wrf_debug(150, mp_debug)
934            endif
935            if (qg1d(k) .gt. qg_max) then
936             imax_qg = i
937             jmax_qg = j
938             kmax_qg = k
939             qg_max = qg1d(k)
940            elseif (qg1d(k) .lt. 0.0) then
941             write(mp_debug,*) 'WARNING, negative qg ', qg1d(k),        &
942                        ' at i,j,k=', i,j,k
943             CALL wrf_debug(150, mp_debug)
944            endif
945            if (ni1d(k) .gt. ni_max) then
946             imax_ni = i
947             jmax_ni = j
948             kmax_ni = k
949             ni_max = ni1d(k)
950            elseif (ni1d(k) .lt. 0.0) then
951             write(mp_debug,*) 'WARNING, negative ni ', ni1d(k),        &
952                        ' at i,j,k=', i,j,k
953             CALL wrf_debug(150, mp_debug)
954            endif
955            if (qv1d(k) .lt. 0.0) then
956             if (k.lt.kte-2 .and. k.gt.kts+1) then
957                qv(i,k,j) = 0.5*(qv(i,k-1,j) + qv(i,k+1,j))
958             else
959                qv(i,k,j) = 1.E-7
960             endif
961             write(mp_debug,*) 'WARNING, negative qv ', qv1d(k),        &
962                        ' at i,j,k=', i,j,k
963             CALL wrf_debug(150, mp_debug)
964            endif
965         enddo
966
967!        if (dBZ_tstep) then
968!         call calc_refl10cm (qv1d, qc1d, qr1d, nr1d, qs1d, qg1d,       &
969!                     t1d, p1d, dBZ, kts, kte, i, j)
970!         do k = kts, kte
971!            refl_10cm(i,k,j) = MAX(-35., dBZ(k))
972!         enddo
973!        endif
974
975      enddo i_loop
976      enddo j_loop
977
978! DEBUG - GT
979      write(mp_debug,'(a,7(a,e13.6,1x,a,i3,a,i3,a,i3,a,1x))') 'MP-GT:', &
980         'qc: ', qc_max, '(', imax_qc, ',', jmax_qc, ',', kmax_qc, ')', &
981         'qr: ', qr_max, '(', imax_qr, ',', jmax_qr, ',', kmax_qr, ')', &
982         'qi: ', qi_max, '(', imax_qi, ',', jmax_qi, ',', kmax_qi, ')', &
983         'qs: ', qs_max, '(', imax_qs, ',', jmax_qs, ',', kmax_qs, ')', &
984         'qg: ', qg_max, '(', imax_qg, ',', jmax_qg, ',', kmax_qg, ')', &
985         'ni: ', ni_max, '(', imax_ni, ',', jmax_ni, ',', kmax_ni, ')', &
986         'nr: ', nr_max, '(', imax_nr, ',', jmax_nr, ',', kmax_nr, ')'
987      CALL wrf_debug(150, mp_debug)
988! END DEBUG - GT
989
990      do i = 1, 256
991         mp_debug(i:i) = char(0)
992      enddo
993
994      END SUBROUTINE mp_gt_driver
995
996!+---+-----------------------------------------------------------------+
997!ctrlL
998!+---+-----------------------------------------------------------------+
999!+---+-----------------------------------------------------------------+
1000!.. This subroutine computes the moisture tendencies of water vapor,
1001!.. cloud droplets, rain, cloud ice (pristine), snow, and graupel.
1002!.. Previously this code was based on Reisner et al (1998), but few of
1003!.. those pieces remain.  A complete description is now found in
1004!.. Thompson et al. (2004, 2008).
1005!+---+-----------------------------------------------------------------+
1006!
1007      subroutine mp_thompson (qv1d, qc1d, qi1d, qr1d, qs1d, qg1d, ni1d, &
1008                          nr1d, t1d, p1d, dzq, &
1009                          pptrain, pptsnow, pptgraul, pptice, &
1010                          kts, kte, dt, ii, jj)
1011
1012      implicit none
1013
1014!..Sub arguments
1015      INTEGER, INTENT(IN):: kts, kte, ii, jj
1016      REAL, DIMENSION(kts:kte), INTENT(INOUT):: &
1017                          qv1d, qc1d, qi1d, qr1d, qs1d, qg1d, ni1d, &
1018                          nr1d, t1d, p1d
1019      REAL, DIMENSION(kts:kte), INTENT(IN):: dzq
1020      REAL, INTENT(INOUT):: pptrain, pptsnow, pptgraul, pptice
1021      REAL, INTENT(IN):: dt
1022
1023!..Local variables
1024      REAL, DIMENSION(kts:kte):: tten, qvten, qcten, qiten, &
1025           qrten, qsten, qgten, niten, nrten
1026
1027      DOUBLE PRECISION, DIMENSION(kts:kte):: prw_vcd
1028
1029      DOUBLE PRECISION, DIMENSION(kts:kte):: prr_wau, prr_rcw, prr_rcs, &
1030           prr_rcg, prr_sml, prr_gml, &
1031           prr_rci, prv_rev,          &
1032           pnr_wau, pnr_rcs, pnr_rcg, &
1033           pnr_rci, pnr_sml, pnr_gml, &
1034           pnr_rev, pnr_rcr, pnr_rfz
1035
1036      DOUBLE PRECISION, DIMENSION(kts:kte):: pri_inu, pni_inu, pri_ihm, &
1037           pni_ihm, pri_wfz, pni_wfz, &
1038           pri_rfz, pni_rfz, pri_ide, &
1039           pni_ide, pri_rci, pni_rci, &
1040           pni_sci, pni_iau
1041
1042      DOUBLE PRECISION, DIMENSION(kts:kte):: prs_iau, prs_sci, prs_rcs, &
1043           prs_scw, prs_sde, prs_ihm, &
1044           prs_ide
1045
1046      DOUBLE PRECISION, DIMENSION(kts:kte):: prg_scw, prg_rfz, prg_gde, &
1047           prg_gcw, prg_rci, prg_rcs, &
1048           prg_rcg, prg_ihm
1049
1050      REAL, DIMENSION(kts:kte):: temp, pres, qv
1051      REAL, DIMENSION(kts:kte):: rc, ri, rr, rs, rg, ni, nr
1052      REAL, DIMENSION(kts:kte):: rho, rhof, rhof2
1053      REAL, DIMENSION(kts:kte):: qvs, qvsi
1054      REAL, DIMENSION(kts:kte):: satw, sati, ssatw, ssati
1055      REAL, DIMENSION(kts:kte):: diffu, visco, vsc2, &
1056           tcond, lvap, ocp, lvt2
1057
1058      DOUBLE PRECISION, DIMENSION(kts:kte):: ilamr, ilamg, N0_r, N0_g
1059      REAL, DIMENSION(kts:kte):: mvd_r, mvd_c
1060      REAL, DIMENSION(kts:kte):: smob, smo2, smo1, smo0, &
1061           smoc, smod, smoe, smof
1062
1063      REAL, DIMENSION(kts:kte):: sed_r, sed_s, sed_g, sed_i, sed_n
1064
1065      REAL:: rgvm, delta_tp, orho, lfus2
1066      REAL, DIMENSION(4):: onstep
1067      DOUBLE PRECISION:: N0_exp, N0_min, lam_exp, lamc, lamr, lamg
1068      DOUBLE PRECISION:: lami, ilami
1069      REAL:: xDc, Dc_b, Dc_g, xDi, xDr, xDs, xDg, Ds_m, Dg_m
1070      DOUBLE PRECISION:: Dr_star
1071      REAL:: zeta1, zeta, taud, tau
1072      REAL:: stoke_r, stoke_s, stoke_g, stoke_i
1073      REAL:: vti, vtr, vts, vtg
1074      REAL, DIMENSION(kts:kte+1):: vtik, vtnik, vtrk, vtnrk, vtsk, vtgk
1075      REAL, DIMENSION(kts:kte):: vts_boost
1076      REAL:: Mrat, ils1, ils2, t1_vts, t2_vts, t3_vts, t4_vts, C_snow
1077      REAL:: a_, b_, loga_, A1, A2, tf
1078      REAL:: tempc, tc0, r_mvd1, r_mvd2, xkrat
1079      REAL:: xnc, xri, xni, xmi, oxmi, xrc, xrr, xnr
1080      REAL:: xsat, rate_max, sump, ratio
1081      REAL:: clap, fcd, dfcd
1082      REAL:: otemp, rvs, rvs_p, rvs_pp, gamsc, alphsc, t1_evap, t1_subl
1083      REAL:: r_frac, g_frac
1084      REAL:: Ef_rw, Ef_sw, Ef_gw, Ef_rr
1085      REAL:: dtsave, odts, odt, odzq
1086      REAL:: xslw1, ygra1, zans1
1087      INTEGER:: i, k, k2, n, nn, nstep, k_0, kbot, IT, iexfrq
1088      INTEGER, DIMENSION(4):: ksed1
1089      INTEGER:: nir, nis, nig, nii, nic
1090      INTEGER:: idx_tc, idx_t, idx_s, idx_g1, idx_g, idx_r1, idx_r,     &
1091                idx_i1, idx_i, idx_c, idx, idx_d
1092      LOGICAL:: melti, no_micro
1093      LOGICAL, DIMENSION(kts:kte):: L_qc, L_qi, L_qr, L_qs, L_qg
1094      LOGICAL:: debug_flag
1095
1096!+---+
1097
1098      debug_flag = .false.
1099      if (ii.eq.315 .and. jj.eq.2) debug_flag = .true.
1100
1101      no_micro = .true.
1102      dtsave = dt
1103      odt = 1./dt
1104      odts = 1./dtsave
1105      iexfrq = 1
1106
1107!+---+-----------------------------------------------------------------+
1108!.. Source/sink terms.  First 2 chars: "pr" represents source/sink of
1109!.. mass while "pn" represents source/sink of number.  Next char is one
1110!.. of "v" for water vapor, "r" for rain, "i" for cloud ice, "w" for
1111!.. cloud water, "s" for snow, and "g" for graupel.  Next chars
1112!.. represent processes: "de" for sublimation/deposition, "ev" for
1113!.. evaporation, "fz" for freezing, "ml" for melting, "au" for
1114!.. autoconversion, "nu" for ice nucleation, "hm" for Hallet/Mossop
1115!.. secondary ice production, and "c" for collection followed by the
1116!.. character for the species being collected.  ALL of these terms are
1117!.. positive (except for deposition/sublimation terms which can switch
1118!.. signs based on super/subsaturation) and are treated as negatives
1119!.. where necessary in the tendency equations.
1120!+---+-----------------------------------------------------------------+
1121
1122      do k = kts, kte
1123         tten(k) = 0.
1124         qvten(k) = 0.
1125         qcten(k) = 0.
1126         qiten(k) = 0.
1127         qrten(k) = 0.
1128         qsten(k) = 0.
1129         qgten(k) = 0.
1130         niten(k) = 0.
1131         nrten(k) = 0.
1132
1133         prw_vcd(k) = 0.
1134
1135         prv_rev(k) = 0.
1136         prr_wau(k) = 0.
1137         prr_rcw(k) = 0.
1138         prr_rcs(k) = 0.
1139         prr_rcg(k) = 0.
1140         prr_sml(k) = 0.
1141         prr_gml(k) = 0.
1142         prr_rci(k) = 0.
1143         pnr_wau(k) = 0.
1144         pnr_rcs(k) = 0.
1145         pnr_rcg(k) = 0.
1146         pnr_rci(k) = 0.
1147         pnr_sml(k) = 0.
1148         pnr_gml(k) = 0.
1149         pnr_rev(k) = 0.
1150         pnr_rcr(k) = 0.
1151         pnr_rfz(k) = 0.
1152
1153         pri_inu(k) = 0.
1154         pni_inu(k) = 0.
1155         pri_ihm(k) = 0.
1156         pni_ihm(k) = 0.
1157         pri_wfz(k) = 0.
1158         pni_wfz(k) = 0.
1159         pri_rfz(k) = 0.
1160         pni_rfz(k) = 0.
1161         pri_ide(k) = 0.
1162         pni_ide(k) = 0.
1163         pri_rci(k) = 0.
1164         pni_rci(k) = 0.
1165         pni_sci(k) = 0.
1166         pni_iau(k) = 0.
1167
1168         prs_iau(k) = 0.
1169         prs_sci(k) = 0.
1170         prs_rcs(k) = 0.
1171         prs_scw(k) = 0.
1172         prs_sde(k) = 0.
1173         prs_ihm(k) = 0.
1174         prs_ide(k) = 0.
1175
1176         prg_scw(k) = 0.
1177         prg_rfz(k) = 0.
1178         prg_gde(k) = 0.
1179         prg_gcw(k) = 0.
1180         prg_rci(k) = 0.
1181         prg_rcs(k) = 0.
1182         prg_rcg(k) = 0.
1183         prg_ihm(k) = 0.
1184      enddo
1185
1186!+---+-----------------------------------------------------------------+
1187!..Put column of data into local arrays.
1188!+---+-----------------------------------------------------------------+
1189      do k = kts, kte
1190         temp(k) = t1d(k)
1191         qv(k) = MAX(1.E-10, qv1d(k))
1192         pres(k) = p1d(k)
1193         rho(k) = 0.622*pres(k)/(R*temp(k)*(qv(k)+0.622))
1194         if (qc1d(k) .gt. R1) then
1195            no_micro = .false.
1196            rc(k) = qc1d(k)*rho(k)
1197            L_qc(k) = .true.
1198         else
1199            qc1d(k) = 0.0
1200            rc(k) = R1
1201            L_qc(k) = .false.
1202         endif
1203         if (qi1d(k) .gt. R1) then
1204            no_micro = .false.
1205            ri(k) = qi1d(k)*rho(k)
1206            ni(k) = MAX(R2, ni1d(k)*rho(k))
1207            L_qi(k) = .true.
1208            lami = (am_i*cig(2)*oig1*ni(k)/ri(k))**obmi
1209            ilami = 1./lami
1210            xDi = (bm_i + mu_i + 1.) * ilami
1211            if (xDi.lt. 20.E-6) then
1212             lami = cie(2)/20.E-6
1213             ni(k) = MIN(500.D3, cig(1)*oig2*ri(k)/am_i*lami**bm_i)
1214            elseif (xDi.gt. 300.E-6) then
1215             lami = cie(2)/300.E-6
1216             ni(k) = cig(1)*oig2*ri(k)/am_i*lami**bm_i
1217            endif
1218         else
1219            qi1d(k) = 0.0
1220            ni1d(k) = 0.0
1221            ri(k) = R1
1222            ni(k) = R2
1223            L_qi(k) = .false.
1224         endif
1225
1226         if (qr1d(k) .gt. R1) then
1227            no_micro = .false.
1228            rr(k) = qr1d(k)*rho(k)
1229            nr(k) = MAX(R2, nr1d(k)*rho(k))
1230            L_qr(k) = .true.
1231            if (nr(k) .gt. R2) then
1232             lamr = (am_r*crg(3)*org2*nr(k)/rr(k))**obmr
1233             mvd_r(k) = (3.0 + mu_r + 0.672) / lamr
1234             if (mvd_r(k) .gt. 2.5E-3) then
1235                mvd_r(k) = 2.5E-3
1236                lamr = (3.0 + mu_r + 0.672) / mvd_r(k)
1237                nr(k) = crg(2)*org3*rr(k)*lamr**bm_r / am_r
1238             elseif (mvd_r(k) .lt. D0r*0.75) then
1239                mvd_r(k) = D0r*0.75
1240                lamr = (3.0 + mu_r + 0.672) / mvd_r(k)
1241                nr(k) = crg(2)*org3*rr(k)*lamr**bm_r / am_r
1242             endif
1243            else
1244             if (qr1d(k) .gt. R2) then
1245                mvd_r(k) = 1.0E-3
1246             else
1247                mvd_r(k) = 2.5E-3 / 3.0**(ALOG10(R2)-ALOG10(qr1d(k)))
1248             endif
1249             lamr = (3.0 + mu_r + 0.672) / mvd_r(k)
1250             nr(k) = crg(2)*org3*rr(k)*lamr**bm_r / am_r
1251            endif
1252         else
1253            qr1d(k) = 0.0
1254            nr1d(k) = 0.0
1255            rr(k) = R1
1256            nr(k) = R2
1257            L_qr(k) = .false.
1258         endif
1259         if (qs1d(k) .gt. R1) then
1260            no_micro = .false.
1261            rs(k) = qs1d(k)*rho(k)
1262            L_qs(k) = .true.
1263         else
1264            qs1d(k) = 0.0
1265            rs(k) = R1
1266            L_qs(k) = .false.
1267         endif
1268         if (qg1d(k) .gt. R1) then
1269            no_micro = .false.
1270            rg(k) = qg1d(k)*rho(k)
1271            L_qg(k) = .true.
1272         else
1273            qg1d(k) = 0.0
1274            rg(k) = R1
1275            L_qg(k) = .false.
1276         endif
1277      enddo
1278
1279
1280!+---+-----------------------------------------------------------------+
1281!..Derive various thermodynamic variables frequently used.
1282!.. Saturation vapor pressure (mixing ratio) over liquid/ice comes from
1283!.. Flatau et al. 1992; enthalpy (latent heat) of vaporization from
1284!.. Bohren & Albrecht 1998; others from Pruppacher & Klett 1978.
1285!+---+-----------------------------------------------------------------+
1286      do k = kts, kte
1287         tempc = temp(k) - 273.15
1288         rhof(k) = SQRT(RHO_NOT/rho(k))
1289         rhof2(k) = SQRT(rhof(k))
1290         qvs(k) = rslf(pres(k), temp(k))
1291         if (tempc .le. 0.0) then
1292          qvsi(k) = rsif(pres(k), temp(k))
1293         else
1294          qvsi(k) = qvs(k)
1295         endif
1296         satw(k) = qv(k)/qvs(k)
1297         sati(k) = qv(k)/qvsi(k)
1298         ssatw(k) = satw(k) - 1.
1299         ssati(k) = sati(k) - 1.
1300         if (abs(ssatw(k)).lt. eps) ssatw(k) = 0.0
1301         if (abs(ssati(k)).lt. eps) ssati(k) = 0.0
1302         if (no_micro .and. ssati(k).gt. 0.0) no_micro = .false.
1303         diffu(k) = 2.11E-5*(temp(k)/273.15)**1.94 * (101325./pres(k))
1304         if (tempc .ge. 0.0) then
1305            visco(k) = (1.718+0.0049*tempc)*1.0E-5
1306         else
1307            visco(k) = (1.718+0.0049*tempc-1.2E-5*tempc*tempc)*1.0E-5
1308         endif
1309         ocp(k) = 1./(Cp*(1.+0.887*qv(k)))
1310         vsc2(k) = SQRT(rho(k)/visco(k))
1311         lvap(k) = lvap0 + (2106.0 - 4218.0)*tempc
1312         tcond(k) = (5.69 + 0.0168*tempc)*1.0E-5 * 418.936
1313      enddo
1314
1315!+---+-----------------------------------------------------------------+
1316!..If no existing hydrometeor species and no chance to initiate ice or
1317!.. condense cloud water, just exit quickly!
1318!+---+-----------------------------------------------------------------+
1319
1320      if (no_micro) return
1321
1322!+---+-----------------------------------------------------------------+
1323!..Calculate y-intercept, slope, and useful moments for snow.
1324!+---+-----------------------------------------------------------------+
1325      if (.not. iiwarm) then
1326      do k = kts, kte
1327         if (.not. L_qs(k)) CYCLE
1328         tc0 = MIN(-0.1, temp(k)-273.15)
1329         smob(k) = rs(k)*oams
1330
1331!..All other moments based on reference, 2nd moment.  If bm_s.ne.2,
1332!.. then we must compute actual 2nd moment and use as reference.
1333         if (bm_s.gt.(2.0-1.e-3) .and. bm_s.lt.(2.0+1.e-3)) then
1334            smo2(k) = smob(k)
1335         else
1336            loga_ = sa(1) + sa(2)*tc0 + sa(3)*bm_s &
1337               + sa(4)*tc0*bm_s + sa(5)*tc0*tc0 &
1338               + sa(6)*bm_s*bm_s + sa(7)*tc0*tc0*bm_s &
1339               + sa(8)*tc0*bm_s*bm_s + sa(9)*tc0*tc0*tc0 &
1340               + sa(10)*bm_s*bm_s*bm_s
1341            a_ = 10.0**loga_
1342            b_ = sb(1) + sb(2)*tc0 + sb(3)*bm_s &
1343               + sb(4)*tc0*bm_s + sb(5)*tc0*tc0 &
1344               + sb(6)*bm_s*bm_s + sb(7)*tc0*tc0*bm_s &
1345               + sb(8)*tc0*bm_s*bm_s + sb(9)*tc0*tc0*tc0 &
1346               + sb(10)*bm_s*bm_s*bm_s
1347            smo2(k) = (smob(k)/a_)**(1./b_)
1348         endif
1349
1350!..Calculate 0th moment.  Represents snow number concentration.
1351         loga_ = sa(1) + sa(2)*tc0 + sa(5)*tc0*tc0 + sa(9)*tc0*tc0*tc0
1352         a_ = 10.0**loga_
1353         b_ = sb(1) + sb(2)*tc0 + sb(5)*tc0*tc0 + sb(9)*tc0*tc0*tc0
1354         smo0(k) = a_ * smo2(k)**b_
1355
1356!..Calculate 1st moment.  Useful for depositional growth and melting.
1357         loga_ = sa(1) + sa(2)*tc0 + sa(3) &
1358               + sa(4)*tc0 + sa(5)*tc0*tc0 &
1359               + sa(6) + sa(7)*tc0*tc0 &
1360               + sa(8)*tc0 + sa(9)*tc0*tc0*tc0 &
1361               + sa(10)
1362         a_ = 10.0**loga_
1363         b_ = sb(1)+ sb(2)*tc0 + sb(3) + sb(4)*tc0 &
1364              + sb(5)*tc0*tc0 + sb(6) &
1365              + sb(7)*tc0*tc0 + sb(8)*tc0 &
1366              + sb(9)*tc0*tc0*tc0 + sb(10)
1367         smo1(k) = a_ * smo2(k)**b_
1368
1369!..Calculate bm_s+1 (th) moment.  Useful for diameter calcs.
1370         loga_ = sa(1) + sa(2)*tc0 + sa(3)*cse(1) &
1371               + sa(4)*tc0*cse(1) + sa(5)*tc0*tc0 &
1372               + sa(6)*cse(1)*cse(1) + sa(7)*tc0*tc0*cse(1) &
1373               + sa(8)*tc0*cse(1)*cse(1) + sa(9)*tc0*tc0*tc0 &
1374               + sa(10)*cse(1)*cse(1)*cse(1)
1375         a_ = 10.0**loga_
1376         b_ = sb(1)+ sb(2)*tc0 + sb(3)*cse(1) + sb(4)*tc0*cse(1) &
1377              + sb(5)*tc0*tc0 + sb(6)*cse(1)*cse(1) &
1378              + sb(7)*tc0*tc0*cse(1) + sb(8)*tc0*cse(1)*cse(1) &
1379              + sb(9)*tc0*tc0*tc0 + sb(10)*cse(1)*cse(1)*cse(1)
1380         smoc(k) = a_ * smo2(k)**b_
1381
1382!..Calculate bv_s+2 (th) moment.  Useful for riming.
1383         loga_ = sa(1) + sa(2)*tc0 + sa(3)*cse(13) &
1384               + sa(4)*tc0*cse(13) + sa(5)*tc0*tc0 &
1385               + sa(6)*cse(13)*cse(13) + sa(7)*tc0*tc0*cse(13) &
1386               + sa(8)*tc0*cse(13)*cse(13) + sa(9)*tc0*tc0*tc0 &
1387               + sa(10)*cse(13)*cse(13)*cse(13)
1388         a_ = 10.0**loga_
1389         b_ = sb(1)+ sb(2)*tc0 + sb(3)*cse(13) + sb(4)*tc0*cse(13) &
1390              + sb(5)*tc0*tc0 + sb(6)*cse(13)*cse(13) &
1391              + sb(7)*tc0*tc0*cse(13) + sb(8)*tc0*cse(13)*cse(13) &
1392              + sb(9)*tc0*tc0*tc0 + sb(10)*cse(13)*cse(13)*cse(13)
1393         smoe(k) = a_ * smo2(k)**b_
1394
1395!..Calculate 1+(bv_s+1)/2 (th) moment.  Useful for depositional growth.
1396         loga_ = sa(1) + sa(2)*tc0 + sa(3)*cse(16) &
1397               + sa(4)*tc0*cse(16) + sa(5)*tc0*tc0 &
1398               + sa(6)*cse(16)*cse(16) + sa(7)*tc0*tc0*cse(16) &
1399               + sa(8)*tc0*cse(16)*cse(16) + sa(9)*tc0*tc0*tc0 &
1400               + sa(10)*cse(16)*cse(16)*cse(16)
1401         a_ = 10.0**loga_
1402         b_ = sb(1)+ sb(2)*tc0 + sb(3)*cse(16) + sb(4)*tc0*cse(16) &
1403              + sb(5)*tc0*tc0 + sb(6)*cse(16)*cse(16) &
1404              + sb(7)*tc0*tc0*cse(16) + sb(8)*tc0*cse(16)*cse(16) &
1405              + sb(9)*tc0*tc0*tc0 + sb(10)*cse(16)*cse(16)*cse(16)
1406         smof(k) = a_ * smo2(k)**b_
1407
1408      enddo
1409
1410!+---+-----------------------------------------------------------------+
1411!..Calculate y-intercept, slope values for graupel.
1412!+---+-----------------------------------------------------------------+
1413      N0_min = gonv_max
1414      do k = kte, kts, -1
1415         if (temp(k).lt.T_0 .and. (rc(k)+rr(k)).gt.1.E-5) then
1416            xslw1 = 5. + alog10(max(1.E-5, min(1.E-2, (rc(k)+rr(k)))))
1417         else
1418            xslw1 = 0.
1419         endif
1420         ygra1 = 5. + alog10(max(1.E-5, min(1.E-2, rg(k))))
1421         zans1 = 3.324 + (3./(5.*xslw1*ygra1/(5.*xslw1+1.+0.25*ygra1)+1.+0.25*ygra1))
1422         N0_exp = 10.**(zans1)
1423         N0_exp = MAX(DBLE(gonv_min), MIN(N0_exp, DBLE(gonv_max)))
1424         N0_min = MIN(N0_exp, N0_min)
1425         N0_exp = N0_min
1426         lam_exp = (N0_exp*am_g*cgg(1)/rg(k))**oge1
1427         lamg = lam_exp * (cgg(3)*ogg2*ogg1)**obmg
1428         ilamg(k) = 1./lamg
1429         N0_g(k) = N0_exp/(cgg(2)*lam_exp) * lamg**cge(2)
1430!+---+-----------------------------------------------------------------+
1431!     if( debug_flag .and. k.lt.42) then
1432!        if (k.eq.41) write(mp_debug,*) 'DEBUG-GT:   K,   zans1,      rc,        rr,         rg,        N0_g'
1433!        if (k.eq.41) CALL wrf_debug(0, mp_debug)
1434!        write(mp_debug, 'a, i2, 1x, f6.3, 1x, 4(1x,e13.6,1x)')         &
1435!                   '  GT ', k, zans1, rc(k), rr(k), rg(k), N0_g(k)
1436!        CALL wrf_debug(0, mp_debug)
1437!     endif
1438!+---+-----------------------------------------------------------------+
1439      enddo
1440
1441      endif
1442
1443!+---+-----------------------------------------------------------------+
1444!..Calculate y-intercept, slope values for rain.
1445!+---+-----------------------------------------------------------------+
1446      do k = kte, kts, -1
1447         lamr = (am_r*crg(3)*org2*nr(k)/rr(k))**obmr
1448         ilamr(k) = 1./lamr
1449         mvd_r(k) = (3.0 + mu_r + 0.672) / lamr
1450         N0_r(k) = nr(k)*org2*lamr**cre(2)
1451      enddo
1452
1453!+---+-----------------------------------------------------------------+
1454!..Compute warm-rain process terms (except evap done later).
1455!+---+-----------------------------------------------------------------+
1456
1457      do k = kts, kte
1458
1459!..Rain self-collection follows Seifert, 1994 and drop break-up
1460!.. follows Verlinde and Cotton, 1993.                                        RAIN2M
1461         if (L_qr(k) .and. mvd_r(k).gt. D0r) then
1462          Ef_rr = 1.0
1463          if (mvd_r(k) .gt. 1750.0E-6) then
1464             Ef_rr = 2.0 - EXP(2300.0*(mvd_r(k)-1750.0E-6))
1465          endif
1466          pnr_rcr(k) = Ef_rr * 8.*nr(k)*rr(k)
1467         endif
1468
1469         if (.not. L_qc(k)) CYCLE
1470         xDc = MAX(D0c*1.E6, ((rc(k)/(am_r*Nt_c))**obmr) * 1.E6)
1471         lamc = (Nt_c*am_r* ccg(2) * ocg1 / rc(k))**obmr
1472         mvd_c(k) = (3.0+mu_c+0.672) / lamc
1473
1474!..Autoconversion follows Berry & Reinhardt (1974) with characteristic
1475!.. diameters correctly computed from gamma distrib of cloud droplets.
1476         if (rc(k).gt. 0.01e-3) then
1477          Dc_g = ((ccg(3)*ocg2)**obmr / lamc) * 1.E6
1478          Dc_b = (xDc*xDc*xDc*Dc_g*Dc_g*Dc_g - xDc*xDc*xDc*xDc*xDc*xDc) &
1479                 **(1./6.)
1480          zeta1 = 0.5*((6.25E-6*xDc*Dc_b*Dc_b*Dc_b - 0.4) &
1481                     + abs(6.25E-6*xDc*Dc_b*Dc_b*Dc_b - 0.4))
1482          zeta = 0.027*rc(k)*zeta1
1483          taud = 0.5*((0.5*Dc_b - 7.5) + abs(0.5*Dc_b - 7.5)) + R1
1484          tau  = 3.72/(rc(k)*taud)
1485          prr_wau(k) = zeta/tau
1486          prr_wau(k) = MIN(DBLE(rc(k)*odts), prr_wau(k))
1487          pnr_wau(k) = prr_wau(k) / (am_r*mu_c/3.*D0r*D0r*D0r/rho(k))       ! RAIN2M
1488         endif
1489
1490!..Rain collecting cloud water.  In CE, assume Dc<<Dr and vtc=~0.
1491         if (L_qr(k) .and. mvd_r(k).gt. D0r .and. mvd_c(k).gt. D0c) then
1492          lamr = 1./ilamr(k)
1493          idx = 1 + INT(nbr*DLOG(mvd_r(k)/Dr(1))/DLOG(Dr(nbr)/Dr(1)))
1494          idx = MIN(idx, nbr)
1495          Ef_rw = t_Efrw(idx, INT(mvd_c(k)*1.E6))
1496          prr_rcw(k) = rhof(k)*t1_qr_qc*Ef_rw*rc(k)*N0_r(k) &
1497                         *((lamr+fv_r)**(-cre(9)))
1498          prr_rcw(k) = MIN(DBLE(rc(k)*odts), prr_rcw(k))
1499         endif
1500      enddo
1501
1502!+---+-----------------------------------------------------------------+
1503!..Compute all frozen hydrometeor species' process terms.
1504!+---+-----------------------------------------------------------------+
1505      if (.not. iiwarm) then
1506      do k = kts, kte
1507         vts_boost(k) = 1.5
1508
1509!..Temperature lookup table indexes.
1510         tempc = temp(k) - 273.15
1511         idx_tc = MAX(1, MIN(NINT(-tempc), 45) )
1512         idx_t = INT( (tempc-2.5)/5. ) - 1
1513         idx_t = MAX(1, -idx_t)
1514         idx_t = MIN(idx_t, ntb_t)
1515         IT = MAX(1, MIN(NINT(-tempc), 31) )
1516
1517!..Cloud water lookup table index.
1518         if (rc(k).gt. r_c(1)) then
1519          nic = NINT(ALOG10(rc(k)))
1520          do nn = nic-1, nic+1
1521             n = nn
1522             if ( (rc(k)/10.**nn).ge.1.0 .and. &
1523                  (rc(k)/10.**nn).lt.10.0) goto 141
1524          enddo
1525 141      continue
1526          idx_c = INT(rc(k)/10.**n) + 10*(n-nic2) - (n-nic2)
1527          idx_c = MAX(1, MIN(idx_c, ntb_c))
1528         else
1529          idx_c = 1
1530         endif
1531
1532!..Cloud ice lookup table indexes.
1533         if (ri(k).gt. r_i(1)) then
1534          nii = NINT(ALOG10(ri(k)))
1535          do nn = nii-1, nii+1
1536             n = nn
1537             if ( (ri(k)/10.**nn).ge.1.0 .and. &
1538                  (ri(k)/10.**nn).lt.10.0) goto 142
1539          enddo
1540 142      continue
1541          idx_i = INT(ri(k)/10.**n) + 10*(n-nii2) - (n-nii2)
1542          idx_i = MAX(1, MIN(idx_i, ntb_i))
1543         else
1544          idx_i = 1
1545         endif
1546
1547         if (ni(k).gt. Nt_i(1)) then
1548          nii = NINT(ALOG10(ni(k)))
1549          do nn = nii-1, nii+1
1550             n = nn
1551             if ( (ni(k)/10.**nn).ge.1.0 .and. &
1552                  (ni(k)/10.**nn).lt.10.0) goto 143
1553          enddo
1554 143      continue
1555          idx_i1 = INT(ni(k)/10.**n) + 10*(n-nii3) - (n-nii3)
1556          idx_i1 = MAX(1, MIN(idx_i1, ntb_i1))
1557         else
1558          idx_i1 = 1
1559         endif
1560
1561!..Rain lookup table indexes.
1562         if (rr(k).gt. r_r(1)) then
1563          nir = NINT(ALOG10(rr(k)))
1564          do nn = nir-1, nir+1
1565             n = nn
1566             if ( (rr(k)/10.**nn).ge.1.0 .and. &
1567                  (rr(k)/10.**nn).lt.10.0) goto 144
1568          enddo
1569 144      continue
1570          idx_r = INT(rr(k)/10.**n) + 10*(n-nir2) - (n-nir2)
1571          idx_r = MAX(1, MIN(idx_r, ntb_r))
1572
1573          lamr = 1./ilamr(k)
1574          lam_exp = lamr * (crg(3)*org2*org1)**bm_r
1575          N0_exp = org1*rr(k)/am_r * lam_exp**cre(1)
1576          nir = NINT(DLOG10(N0_exp))
1577          do nn = nir-1, nir+1
1578             n = nn
1579             if ( (N0_exp/10.**nn).ge.1.0 .and. &
1580                  (N0_exp/10.**nn).lt.10.0) goto 145
1581          enddo
1582 145      continue
1583          idx_r1 = INT(N0_exp/10.**n) + 10*(n-nir3) - (n-nir3)
1584          idx_r1 = MAX(1, MIN(idx_r1, ntb_r1))
1585         else
1586          idx_r = 1
1587          idx_r1 = ntb_r1
1588         endif
1589
1590!..Snow lookup table index.
1591         if (rs(k).gt. r_s(1)) then
1592          nis = NINT(ALOG10(rs(k)))
1593          do nn = nis-1, nis+1
1594             n = nn
1595             if ( (rs(k)/10.**nn).ge.1.0 .and. &
1596                  (rs(k)/10.**nn).lt.10.0) goto 146
1597          enddo
1598 146      continue
1599          idx_s = INT(rs(k)/10.**n) + 10*(n-nis2) - (n-nis2)
1600          idx_s = MAX(1, MIN(idx_s, ntb_s))
1601         else
1602          idx_s = 1
1603         endif
1604
1605!..Graupel lookup table index.
1606         if (rg(k).gt. r_g(1)) then
1607          nig = NINT(ALOG10(rg(k)))
1608          do nn = nig-1, nig+1
1609             n = nn
1610             if ( (rg(k)/10.**nn).ge.1.0 .and. &
1611                  (rg(k)/10.**nn).lt.10.0) goto 147
1612          enddo
1613 147      continue
1614          idx_g = INT(rg(k)/10.**n) + 10*(n-nig2) - (n-nig2)
1615          idx_g = MAX(1, MIN(idx_g, ntb_g))
1616
1617          lamg = 1./ilamg(k)
1618          lam_exp = lamg * (cgg(3)*ogg2*ogg1)**bm_g
1619          N0_exp = ogg1*rg(k)/am_g * lam_exp**cge(1)
1620          nig = NINT(DLOG10(N0_exp))
1621          do nn = nig-1, nig+1
1622             n = nn
1623             if ( (N0_exp/10.**nn).ge.1.0 .and. &
1624                  (N0_exp/10.**nn).lt.10.0) goto 148
1625          enddo
1626 148      continue
1627          idx_g1 = INT(N0_exp/10.**n) + 10*(n-nig3) - (n-nig3)
1628          idx_g1 = MAX(1, MIN(idx_g1, ntb_g1))
1629         else
1630          idx_g = 1
1631          idx_g1 = ntb_g1
1632         endif
1633
1634!..Deposition/sublimation prefactor (from Srivastava & Coen 1992).
1635         otemp = 1./temp(k)
1636         rvs = rho(k)*qvsi(k)
1637         rvs_p = rvs*otemp*(lsub*otemp*oRv - 1.)
1638         rvs_pp = rvs * ( otemp*(lsub*otemp*oRv - 1.) &
1639                         *otemp*(lsub*otemp*oRv - 1.) &
1640                         + (-2.*lsub*otemp*otemp*otemp*oRv) &
1641                         + otemp*otemp)
1642         gamsc = lsub*diffu(k)/tcond(k) * rvs_p
1643         alphsc = 0.5*(gamsc/(1.+gamsc))*(gamsc/(1.+gamsc)) &
1644                    * rvs_pp/rvs_p * rvs/rvs_p
1645         alphsc = MAX(1.E-9, alphsc)
1646         xsat = ssati(k)
1647         if (abs(xsat).lt. 1.E-9) xsat=0.
1648         t1_subl = 4.*PI*( 1.0 - alphsc*xsat &
1649                + 2.*alphsc*alphsc*xsat*xsat &
1650                - 5.*alphsc*alphsc*alphsc*xsat*xsat*xsat ) &
1651                / (1.+gamsc)
1652
1653!..Snow collecting cloud water.  In CE, assume Dc<<Ds and vtc=~0.
1654         if (L_qc(k) .and. mvd_c(k).gt. D0c) then
1655          xDs = 0.0
1656          if (L_qs(k)) xDs = smoc(k) / smob(k)
1657          if (xDs .gt. D0s) then
1658           idx = 1 + INT(nbs*DLOG(xDs/Ds(1))/DLOG(Ds(nbs)/Ds(1)))
1659           idx = MIN(idx, nbs)
1660           Ef_sw = t_Efsw(idx, INT(mvd_c(k)*1.E6))
1661           prs_scw(k) = rhof(k)*t1_qs_qc*Ef_sw*rc(k)*smoe(k)
1662          endif
1663
1664!..Graupel collecting cloud water.  In CE, assume Dc<<Dg and vtc=~0.
1665          if (rg(k).ge. r_g(1) .and. mvd_c(k).gt. D0c) then
1666           xDg = (bm_g + mu_g + 1.) * ilamg(k)
1667           vtg = rhof(k)*av_g*cgg(6)*ogg3 * ilamg(k)**bv_g
1668           stoke_g = mvd_c(k)*mvd_c(k)*vtg*rho_w/(9.*visco(k)*xDg)
1669           if (xDg.gt. D0g) then
1670            if (stoke_g.ge.0.4 .and. stoke_g.le.10.) then
1671             Ef_gw = 0.55*ALOG10(2.51*stoke_g)
1672            elseif (stoke_g.lt.0.4) then
1673             Ef_gw = 0.0
1674            elseif (stoke_g.gt.10) then
1675             Ef_gw = 0.77
1676            endif
1677            prg_gcw(k) = rhof(k)*t1_qg_qc*Ef_gw*rc(k)*N0_g(k) &
1678                          *ilamg(k)**cge(9)
1679           endif
1680          endif
1681         endif
1682
1683!..Rain collecting snow.  Cannot assume Wisner (1972) approximation
1684!.. or Mizuno (1990) approach so we solve the CE explicitly and store
1685!.. results in lookup table.
1686         if (rr(k).ge. r_r(1)) then
1687          if (rs(k).ge. r_s(1)) then
1688           if (temp(k).lt.T_0) then
1689            prr_rcs(k) = -(tmr_racs2(idx_s,idx_t,idx_r1,idx_r) &
1690                           + tcr_sacr2(idx_s,idx_t,idx_r1,idx_r) &
1691                           + tmr_racs1(idx_s,idx_t,idx_r1,idx_r) &
1692                           + tcr_sacr1(idx_s,idx_t,idx_r1,idx_r))
1693            prs_rcs(k) = tmr_racs2(idx_s,idx_t,idx_r1,idx_r) &
1694                         + tcr_sacr2(idx_s,idx_t,idx_r1,idx_r) &
1695                         - tcs_racs1(idx_s,idx_t,idx_r1,idx_r) &
1696                         - tms_sacr1(idx_s,idx_t,idx_r1,idx_r)
1697            prg_rcs(k) = tmr_racs1(idx_s,idx_t,idx_r1,idx_r) &
1698                         + tcr_sacr1(idx_s,idx_t,idx_r1,idx_r) &
1699                         + tcs_racs1(idx_s,idx_t,idx_r1,idx_r) &
1700                         + tms_sacr1(idx_s,idx_t,idx_r1,idx_r)
1701            prr_rcs(k) = MAX(DBLE(-rr(k)*odts), prr_rcs(k))
1702            prs_rcs(k) = MAX(DBLE(-rs(k)*odts), prs_rcs(k))
1703            prg_rcs(k) = MIN(DBLE((rr(k)+rs(k))*odts), prg_rcs(k))
1704            pnr_rcs(k) = tnr_racs1(idx_s,idx_t,idx_r1,idx_r)            &   ! RAIN2M
1705                         + tnr_racs2(idx_s,idx_t,idx_r1,idx_r)          &
1706                         + tnr_sacr1(idx_s,idx_t,idx_r1,idx_r)          &
1707                         + tnr_sacr2(idx_s,idx_t,idx_r1,idx_r)
1708           else
1709            prs_rcs(k) = -tcs_racs1(idx_s,idx_t,idx_r1,idx_r)           &
1710                         - tms_sacr1(idx_s,idx_t,idx_r1,idx_r)          &
1711                         + tmr_racs2(idx_s,idx_t,idx_r1,idx_r)          &
1712                         + tcr_sacr2(idx_s,idx_t,idx_r1,idx_r)
1713            prs_rcs(k) = MAX(DBLE(-rs(k)*odts), prs_rcs(k))
1714            prr_rcs(k) = -prs_rcs(k)
1715            pnr_rcs(k) = tnr_racs2(idx_s,idx_t,idx_r1,idx_r)            &   ! RAIN2M
1716                         + tnr_sacr2(idx_s,idx_t,idx_r1,idx_r)
1717           endif
1718           pnr_rcs(k) = MIN(DBLE(nr(k)*odts), pnr_rcs(k))
1719          endif
1720
1721!..Rain collecting graupel.  Cannot assume Wisner (1972) approximation
1722!.. or Mizuno (1990) approach so we solve the CE explicitly and store
1723!.. results in lookup table.
1724          if (rg(k).ge. r_g(1)) then
1725           if (temp(k).lt.T_0) then
1726            prg_rcg(k) = tmr_racg(idx_g1,idx_g,idx_r1,idx_r) &
1727                         + tcr_gacr(idx_g1,idx_g,idx_r1,idx_r)
1728            prg_rcg(k) = MIN(DBLE(rr(k)*odts), prg_rcg(k))
1729            prr_rcg(k) = -prg_rcg(k)
1730            pnr_rcg(k) = tnr_racg(idx_g1,idx_g,idx_r1,idx_r)            &   ! RAIN2M
1731                         + tnr_gacr(idx_g1,idx_g,idx_r1,idx_r)
1732            pnr_rcg(k) = MIN(DBLE(nr(k)*odts), pnr_rcg(k))
1733           else
1734            prr_rcg(k) = tcg_racg(idx_g1,idx_g,idx_r1,idx_r)
1735            prr_rcg(k) = MIN(DBLE(rg(k)*odts), prr_rcg(k))
1736            prg_rcg(k) = -prr_rcg(k)
1737           endif
1738          endif
1739         endif
1740
1741!+---+-----------------------------------------------------------------+
1742!..Next IF block handles only those processes below 0C.
1743!+---+-----------------------------------------------------------------+
1744
1745         if (temp(k).lt.T_0) then
1746
1747          vts_boost(k) = 1.0
1748          rate_max = (qv(k)-qvsi(k))*rho(k)*odts*0.999
1749
1750!..Freezing of water drops into graupel/cloud ice (Bigg 1953).
1751          if (rr(k).gt. r_r(1)) then
1752           prg_rfz(k) = tpg_qrfz(idx_r,idx_r1,idx_tc)*odts
1753           pri_rfz(k) = tpi_qrfz(idx_r,idx_r1,idx_tc)*odts
1754           pni_rfz(k) = tni_qrfz(idx_r,idx_r1,idx_tc)*odts
1755           pnr_rfz(k) = tnr_qrfz(idx_r,idx_r1,idx_tc)*odts                 ! RAIN2M
1756           pnr_rfz(k) = MIN(DBLE(nr(k)*odts), pnr_rfz(k))
1757          elseif (rr(k).gt. R1 .and. temp(k).lt.HGFR) then
1758           pri_rfz(k) = rr(k)*odts
1759           pnr_rfz(k) = nr(k)*odts                                         ! RAIN2M
1760           pni_rfz(k) = pnr_rfz(k)
1761          endif
1762          if (rc(k).gt. r_c(1)) then
1763           pri_wfz(k) = tpi_qcfz(idx_c,idx_tc)*odts
1764           pri_wfz(k) = MIN(DBLE(rc(k)*odts), pri_wfz(k))
1765           pni_wfz(k) = tni_qcfz(idx_c,idx_tc)*odts
1766           pni_wfz(k) = MIN(DBLE(Nt_c*odts), pri_wfz(k)/(2.*xm0i), &
1767                                pni_wfz(k))
1768          endif
1769
1770!..Nucleate ice from deposition & condensation freezing (Cooper 1986)
1771!.. but only if water sat and T<-12C or 25%+ ice supersaturated.
1772          if ( (ssati(k).ge. 0.25) .or. (ssatw(k).gt. eps &
1773                                .and. temp(k).lt.261.15) ) then
1774           xnc = MIN(250.E3, TNO*EXP(ATO*(T_0-temp(k))))
1775           xni = ni(k) + (pni_rfz(k)+pni_wfz(k))*dtsave
1776           pni_inu(k) = 0.5*(xnc-xni + abs(xnc-xni))*odts
1777           pri_inu(k) = MIN(DBLE(rate_max), xm0i*pni_inu(k))
1778           pni_inu(k) = pri_inu(k)/xm0i
1779          endif
1780
1781!..Deposition/sublimation of cloud ice (Srivastava & Coen 1992).
1782          if (L_qi(k)) then
1783           lami = (am_i*cig(2)*oig1*ni(k)/ri(k))**obmi
1784           ilami = 1./lami
1785           xDi = MAX(DBLE(D0i), (bm_i + mu_i + 1.) * ilami)
1786           xmi = am_i*xDi**bm_i
1787           oxmi = 1./xmi
1788           pri_ide(k) = C_cube*t1_subl*diffu(k)*ssati(k)*rvs &
1789                  *oig1*cig(5)*ni(k)*ilami
1790
1791           if (pri_ide(k) .lt. 0.0) then
1792            pri_ide(k) = MAX(DBLE(-ri(k)*odts), pri_ide(k), DBLE(rate_max))
1793            pni_ide(k) = pri_ide(k)*oxmi
1794            pni_ide(k) = MAX(DBLE(-ni(k)*odts), pni_ide(k))
1795           else
1796            pri_ide(k) = MIN(pri_ide(k), DBLE(rate_max))
1797            prs_ide(k) = (1.0D0-tpi_ide(idx_i,idx_i1))*pri_ide(k)
1798            pri_ide(k) = tpi_ide(idx_i,idx_i1)*pri_ide(k)
1799           endif
1800
1801!..Some cloud ice needs to move into the snow category.  Use lookup
1802!.. table that resulted from explicit bin representation of distrib.
1803           if ( (idx_i.eq. ntb_i) .or. (xDi.gt. 5.0*D0s) ) then
1804            prs_iau(k) = ri(k)*.99*odts
1805            pni_iau(k) = ni(k)*.95*odts
1806           elseif (xDi.lt. 0.1*D0s) then
1807            prs_iau(k) = 0.
1808            pni_iau(k) = 0.
1809           else
1810            prs_iau(k) = tps_iaus(idx_i,idx_i1)*odts
1811            prs_iau(k) = MIN(DBLE(ri(k)*.99*odts), prs_iau(k))
1812            pni_iau(k) = tni_iaus(idx_i,idx_i1)*odts
1813            pni_iau(k) = MIN(DBLE(ni(k)*.95*odts), pni_iau(k))
1814           endif
1815          endif
1816
1817!..Deposition/sublimation of snow/graupel follows Srivastava & Coen
1818!.. (1992).
1819          if (L_qs(k)) then
1820           C_snow = C_sqrd + (tempc+15.)*(C_cube-C_sqrd)/(-30.+15.)
1821           C_snow = MAX(C_sqrd, MIN(C_snow, C_cube))
1822           prs_sde(k) = C_snow*t1_subl*diffu(k)*ssati(k)*rvs &
1823                        * (t1_qs_sd*smo1(k) &
1824                         + t2_qs_sd*rhof2(k)*vsc2(k)*smof(k))
1825           if (prs_sde(k).lt. 0.) then
1826            prs_sde(k) = MAX(DBLE(-rs(k)*odts), prs_sde(k), DBLE(rate_max))
1827           else
1828            prs_sde(k) = MIN(prs_sde(k), DBLE(rate_max))
1829           endif
1830          endif
1831
1832          if (L_qg(k) .and. ssati(k).lt. -eps) then
1833           prg_gde(k) = C_cube*t1_subl*diffu(k)*ssati(k)*rvs &
1834               * N0_g(k) * (t1_qg_sd*ilamg(k)**cge(10) &
1835               + t2_qg_sd*vsc2(k)*rhof2(k)*ilamg(k)**cge(11))
1836           if (prg_gde(k).lt. 0.) then
1837            prg_gde(k) = MAX(DBLE(-rg(k)*odts), prg_gde(k), DBLE(rate_max))
1838           else
1839            prg_gde(k) = MIN(prg_gde(k), DBLE(rate_max))
1840           endif
1841          endif
1842
1843!..Snow collecting cloud ice.  In CE, assume Di<<Ds and vti=~0.
1844          if (L_qi(k)) then
1845           lami = (am_i*cig(2)*oig1*ni(k)/ri(k))**obmi
1846           ilami = 1./lami
1847           xDi = MAX(DBLE(D0i), (bm_i + mu_i + 1.) * ilami)
1848           xmi = am_i*xDi**bm_i
1849           oxmi = 1./xmi
1850           if (rs(k).ge. r_s(1)) then
1851            prs_sci(k) = t1_qs_qi*rhof(k)*Ef_si*ri(k)*smoe(k)
1852            pni_sci(k) = prs_sci(k) * oxmi
1853           endif
1854
1855!..Rain collecting cloud ice.  In CE, assume Di<<Dr and vti=~0.
1856           if (rr(k).ge. r_r(1) .and. mvd_r(k).gt. 4.*xDi) then
1857            lamr = 1./ilamr(k)
1858            pri_rci(k) = rhof(k)*t1_qr_qi*Ef_ri*ri(k)*N0_r(k) &
1859                           *((lamr+fv_r)**(-cre(9)))
1860            pnr_rci(k) = rhof(k)*t1_qr_qi*Ef_ri*ni(k)*N0_r(k)           &   ! RAIN2M
1861                           *((lamr+fv_r)**(-cre(9)))
1862            pni_rci(k) = pri_rci(k) * oxmi
1863            prr_rci(k) = rhof(k)*t2_qr_qi*Ef_ri*ni(k)*N0_r(k) &
1864                           *((lamr+fv_r)**(-cre(8)))
1865            prr_rci(k) = MIN(DBLE(rr(k)*odts), prr_rci(k))
1866            prg_rci(k) = pri_rci(k) + prr_rci(k)
1867           endif
1868          endif
1869
1870!..Ice multiplication from rime-splinters (Hallet & Mossop 1974).
1871          if (prg_gcw(k).gt. eps .and. tempc.gt.-8.0) then
1872           tf = 0.
1873           if (tempc.ge.-5.0 .and. tempc.lt.-3.0) then
1874            tf = 0.5*(-3.0 - tempc)
1875           elseif (tempc.gt.-8.0 .and. tempc.lt.-5.0) then
1876            tf = 0.33333333*(8.0 + tempc)
1877           endif
1878           pni_ihm(k) = 3.5E8*tf*prg_gcw(k)
1879           pri_ihm(k) = xm0i*pni_ihm(k)
1880           prs_ihm(k) = prs_scw(k)/(prs_scw(k)+prg_gcw(k)) &
1881                          * pri_ihm(k)
1882           prg_ihm(k) = prg_gcw(k)/(prs_scw(k)+prg_gcw(k)) &
1883                          * pri_ihm(k)
1884          endif
1885
1886!..A portion of rimed snow converts to graupel but some remains snow.
1887!.. Interp from 5 to 75% as riming factor increases from 5.0 to 30.0
1888!.. 0.028 came from (.75-.05)/(30.-5.).  This remains ad-hoc and should
1889!.. be revisited.
1890          if (prs_scw(k).gt.5.0*prs_sde(k) .and. &
1891                         prs_sde(k).gt.eps) then
1892           r_frac = MIN(30.0D0, prs_scw(k)/prs_sde(k))
1893           g_frac = MIN(0.75, 0.05 + (r_frac-5.)*.028)
1894           vts_boost(k) = MIN(1.5, 1.1 + (r_frac-5.)*.016)
1895           prg_scw(k) = g_frac*prs_scw(k)
1896           prs_scw(k) = (1. - g_frac)*prs_scw(k)
1897          endif
1898
1899         else
1900
1901!..Melt snow and graupel and enhance from collisions with liquid.
1902!.. We also need to sublimate snow and graupel if subsaturated.
1903          if (L_qs(k)) then
1904           prr_sml(k) = tempc*tcond(k)*(t1_qs_me*smo1(k) &
1905                      + t2_qs_me*rhof2(k)*vsc2(k)*smof(k))
1906           prr_sml(k) = prr_sml(k) + 4218.*olfus*tempc &
1907                                   * (prr_rcs(k)+prs_scw(k))
1908           prr_sml(k) = MIN(DBLE(rs(k)*odts), prr_sml(k))
1909           pnr_sml(k) = smo0(k)/rs(k)*prr_sml(k) * 10.0**(-0.50*tempc)      ! RAIN2M
1910           pnr_sml(k) = MIN(DBLE(smo0(k)*odts), pnr_sml(k))
1911           if (tempc.gt.3.5 .or. rs(k).lt.0.005E-3) pnr_sml(k)=0.0
1912
1913           if (ssati(k).lt. 0.) then
1914            prs_sde(k) = C_cube*t1_subl*diffu(k)*ssati(k)*rvs &
1915                         * (t1_qs_sd*smo1(k) &
1916                          + t2_qs_sd*rhof2(k)*vsc2(k)*smof(k))
1917            prs_sde(k) = MAX(DBLE(-rs(k)*odts), prs_sde(k))
1918           endif
1919          endif
1920
1921          if (L_qg(k)) then
1922           prr_gml(k) = tempc*N0_g(k)*tcond(k) &
1923                    *(t1_qg_me*ilamg(k)**cge(10) &
1924                    + t2_qg_me*rhof2(k)*vsc2(k)*ilamg(k)**cge(11))
1925           prr_gml(k) = prr_gml(k) + 4218.*olfus*tempc &
1926                                   * (prr_rcg(k)+prg_gcw(k))
1927           prr_gml(k) = MIN(DBLE(rg(k)*odts), prr_gml(k))
1928           pnr_gml(k) = (N0_g(k) / (cgg(1)*am_g*N0_g(k)/rg(k))**oge1)   &   ! RAIN2M
1929                      / rg(k) * prr_gml(k) * 10.0**(-0.35*tempc)
1930           if (rg(k).lt.0.005E-3) pnr_gml(k)=0.0
1931
1932           if (ssati(k).lt. 0.) then
1933            prg_gde(k) = C_cube*t1_subl*diffu(k)*ssati(k)*rvs &
1934                * N0_g(k) * (t1_qg_sd*ilamg(k)**cge(10) &
1935                + t2_qg_sd*vsc2(k)*rhof2(k)*ilamg(k)**cge(11))
1936            prg_gde(k) = MAX(DBLE(-rg(k)*odts), prg_gde(k))
1937           endif
1938          endif
1939
1940!.. This change will be required if users run adaptive time step that
1941!.. results in delta-t that is generally too long to allow cloud water
1942!.. collection by snow/graupel above melting temperature.
1943!.. Credit to Bjorn-Egil Nygaard for discovering.
1944          if (dt .gt. 120.) then
1945             prr_rcw(k)=prr_rcw(k)+prs_scw(k)+prg_gcw(k)
1946             prs_scw(k)=0.
1947             prg_gcw(k)=0.
1948          endif
1949
1950         endif
1951
1952      enddo
1953      endif
1954
1955!+---+-----------------------------------------------------------------+
1956!..Ensure we do not deplete more hydrometeor species than exists.
1957!+---+-----------------------------------------------------------------+
1958      do k = kts, kte
1959
1960!..If ice supersaturated, ensure sum of depos growth terms does not
1961!.. deplete more vapor than possibly exists.  If subsaturated, limit
1962!.. sum of sublimation terms such that vapor does not reproduce ice
1963!.. supersat again.
1964         sump = pri_inu(k) + pri_ide(k) + prs_ide(k) &
1965              + prs_sde(k) + prg_gde(k)
1966         rate_max = (qv(k)-qvsi(k))*odts*0.999
1967         if ( (sump.gt. eps .and. sump.gt. rate_max) .or. &
1968              (sump.lt. -eps .and. sump.lt. rate_max) ) then
1969          ratio = rate_max/sump
1970          pri_inu(k) = pri_inu(k) * ratio
1971          pri_ide(k) = pri_ide(k) * ratio
1972          pni_ide(k) = pni_ide(k) * ratio
1973          prs_ide(k) = prs_ide(k) * ratio
1974          prs_sde(k) = prs_sde(k) * ratio
1975          prg_gde(k) = prg_gde(k) * ratio
1976         endif
1977
1978!..Cloud water conservation.
1979         sump = -prr_wau(k) - pri_wfz(k) - prr_rcw(k) &
1980                - prs_scw(k) - prg_scw(k) - prg_gcw(k)
1981         rate_max = -rc(k)*odts
1982         if (sump.lt. rate_max .and. L_qc(k)) then
1983          ratio = rate_max/sump
1984          prr_wau(k) = prr_wau(k) * ratio
1985          pri_wfz(k) = pri_wfz(k) * ratio
1986          prr_rcw(k) = prr_rcw(k) * ratio
1987          prs_scw(k) = prs_scw(k) * ratio
1988          prg_scw(k) = prg_scw(k) * ratio
1989          prg_gcw(k) = prg_gcw(k) * ratio
1990         endif
1991
1992!..Cloud ice conservation.
1993         sump = pri_ide(k) - prs_iau(k) - prs_sci(k) &
1994                - pri_rci(k)
1995         rate_max = -ri(k)*odts
1996         if (sump.lt. rate_max .and. L_qi(k)) then
1997          ratio = rate_max/sump
1998          pri_ide(k) = pri_ide(k) * ratio
1999          prs_iau(k) = prs_iau(k) * ratio
2000          prs_sci(k) = prs_sci(k) * ratio
2001          pri_rci(k) = pri_rci(k) * ratio
2002         endif
2003
2004!..Rain conservation.
2005         sump = -prg_rfz(k) - pri_rfz(k) - prr_rci(k) &
2006                + prr_rcs(k) + prr_rcg(k)
2007         rate_max = -rr(k)*odts
2008         if (sump.lt. rate_max .and. L_qr(k)) then
2009          ratio = rate_max/sump
2010          prg_rfz(k) = prg_rfz(k) * ratio
2011          pri_rfz(k) = pri_rfz(k) * ratio
2012          prr_rci(k) = prr_rci(k) * ratio
2013          prr_rcs(k) = prr_rcs(k) * ratio
2014          prr_rcg(k) = prr_rcg(k) * ratio
2015         endif
2016
2017!..Snow conservation.
2018         sump = prs_sde(k) - prs_ihm(k) - prr_sml(k) &
2019                + prs_rcs(k)
2020         rate_max = -rs(k)*odts
2021         if (sump.lt. rate_max .and. L_qs(k)) then
2022          ratio = rate_max/sump
2023          prs_sde(k) = prs_sde(k) * ratio
2024          prs_ihm(k) = prs_ihm(k) * ratio
2025          prr_sml(k) = prr_sml(k) * ratio
2026          prs_rcs(k) = prs_rcs(k) * ratio
2027         endif
2028
2029!..Graupel conservation.
2030         sump = prg_gde(k) - prg_ihm(k) - prr_gml(k) &
2031              + prg_rcg(k)
2032         rate_max = -rg(k)*odts
2033         if (sump.lt. rate_max .and. L_qg(k)) then
2034          ratio = rate_max/sump
2035          prg_gde(k) = prg_gde(k) * ratio
2036          prg_ihm(k) = prg_ihm(k) * ratio
2037          prr_gml(k) = prr_gml(k) * ratio
2038          prg_rcg(k) = prg_rcg(k) * ratio
2039         endif
2040
2041!..Re-enforce proper mass conservation for subsequent elements in case
2042!.. any of the above terms were altered.  Thanks P. Blossey. 2009Sep28
2043         pri_ihm(k) = prs_ihm(k) + prg_ihm(k)
2044         ratio = MIN( ABS(prr_rcg(k)), ABS(prg_rcg(k)) )
2045         prr_rcg(k) = ratio * SIGN(1.0, SNGL(prr_rcg(k)))
2046         prg_rcg(k) = -prr_rcg(k)
2047         if (temp(k).gt.T_0) then
2048            ratio = MIN( ABS(prr_rcs(k)), ABS(prs_rcs(k)) )
2049            prr_rcs(k) = ratio * SIGN(1.0, SNGL(prr_rcs(k)))
2050            prs_rcs(k) = -prr_rcs(k)
2051         endif
2052
2053      enddo
2054
2055!+---+-----------------------------------------------------------------+
2056!..Calculate tendencies of all species but constrain the number of ice
2057!.. to reasonable values.
2058!+---+-----------------------------------------------------------------+
2059      do k = kts, kte
2060         orho = 1./rho(k)
2061         lfus2 = lsub - lvap(k)
2062
2063!..Water vapor tendency
2064         qvten(k) = qvten(k) + (-pri_inu(k) - pri_ide(k) &
2065                      - prs_ide(k) - prs_sde(k) - prg_gde(k)) &
2066                      * orho
2067
2068!..Cloud water tendency
2069         qcten(k) = qcten(k) + (-prr_wau(k) - pri_wfz(k) &
2070                      - prr_rcw(k) - prs_scw(k) - prg_scw(k) &
2071                      - prg_gcw(k)) &
2072                      * orho
2073
2074!..Cloud ice mixing ratio tendency
2075         qiten(k) = qiten(k) + (pri_inu(k) + pri_ihm(k) &
2076                      + pri_wfz(k) + pri_rfz(k) + pri_ide(k) &
2077                      - prs_iau(k) - prs_sci(k) - pri_rci(k)) &
2078                      * orho
2079
2080!..Cloud ice number tendency.
2081         niten(k) = niten(k) + (pni_inu(k) + pni_ihm(k) &
2082                      + pni_wfz(k) + pni_rfz(k) + pni_ide(k) &
2083                      - pni_iau(k) - pni_sci(k) - pni_rci(k)) &
2084                      * orho
2085
2086!..Cloud ice mass/number balance; keep mass-wt mean size between
2087!.. 20 and 300 microns.  Also no more than 500 xtals per liter.
2088         xri=MAX(R1,(qi1d(k) + qiten(k)*dtsave)*rho(k))
2089         xni=MAX(R2,(ni1d(k) + niten(k)*dtsave)*rho(k))
2090         if (xri.gt. R1) then
2091           lami = (am_i*cig(2)*oig1*xni/xri)**obmi
2092           ilami = 1./lami
2093           xDi = (bm_i + mu_i + 1.) * ilami
2094           if (xDi.lt. 20.E-6) then
2095            lami = cie(2)/20.E-6
2096            xni = MIN(500.D3, cig(1)*oig2*xri/am_i*lami**bm_i)
2097            niten(k) = (xni-ni1d(k)*rho(k))*odts*orho
2098           elseif (xDi.gt. 300.E-6) then
2099            lami = cie(2)/300.E-6
2100            xni = cig(1)*oig2*xri/am_i*lami**bm_i
2101            niten(k) = (xni-ni1d(k)*rho(k))*odts*orho
2102           endif
2103         else
2104          niten(k) = -ni1d(k)*odts
2105         endif
2106         xni=MAX(0.,(ni1d(k) + niten(k)*dtsave)*rho(k))
2107         if (xni.gt.500.E3) &
2108                niten(k) = (500.E3-ni1d(k)*rho(k))*odts*orho
2109
2110!..Rain tendency
2111         qrten(k) = qrten(k) + (prr_wau(k) + prr_rcw(k) &
2112                      + prr_sml(k) + prr_gml(k) + prr_rcs(k) &
2113                      + prr_rcg(k) - prg_rfz(k) &
2114                      - pri_rfz(k) - prr_rci(k)) &
2115                      * orho
2116
2117!..Rain number tendency
2118         nrten(k) = nrten(k) + (pnr_wau(k) + pnr_sml(k) + pnr_gml(k)    &
2119                      - (pnr_rfz(k) + pnr_rcr(k) + pnr_rcg(k)           &
2120                      + pnr_rcs(k) + pnr_rci(k)) )                      &
2121                      * orho
2122
2123!..Rain mass/number balance; keep median volume diameter between
2124!.. 37 microns (D0r*0.75) and 2.5 mm.
2125         xrr=MAX(R1,(qr1d(k) + qrten(k)*dtsave)*rho(k))
2126         xnr=MAX(R2,(nr1d(k) + nrten(k)*dtsave)*rho(k))
2127         if (xrr.gt. R1) then
2128           lamr = (am_r*crg(3)*org2*xnr/xrr)**obmr
2129           mvd_r(k) = (3.0 + mu_r + 0.672) / lamr
2130           if (mvd_r(k) .gt. 2.5E-3) then
2131              mvd_r(k) = 2.5E-3
2132              lamr = (3.0 + mu_r + 0.672) / mvd_r(k)
2133              xnr = crg(2)*org3*xrr*lamr**bm_r / am_r
2134              nrten(k) = (xnr-nr1d(k)*rho(k))*odts*orho
2135           elseif (mvd_r(k) .lt. D0r*0.75) then
2136              mvd_r(k) = D0r*0.75
2137              lamr = (3.0 + mu_r + 0.672) / mvd_r(k)
2138              xnr = crg(2)*org3*xrr*lamr**bm_r / am_r
2139              nrten(k) = (xnr-nr1d(k)*rho(k))*odts*orho
2140           endif
2141         else
2142           qrten(k) = -qr1d(k)*odts
2143           nrten(k) = -nr1d(k)*odts
2144         endif
2145
2146!..Snow tendency
2147         qsten(k) = qsten(k) + (prs_iau(k) + prs_sde(k) &
2148                      + prs_sci(k) + prs_scw(k) + prs_rcs(k) &
2149                      + prs_ide(k) - prs_ihm(k) - prr_sml(k)) &
2150                      * orho
2151
2152!..Graupel tendency
2153         qgten(k) = qgten(k) + (prg_scw(k) + prg_rfz(k) &
2154                      + prg_gde(k) + prg_rcg(k) + prg_gcw(k) &
2155                      + prg_rci(k) + prg_rcs(k) - prg_ihm(k) &
2156                      - prr_gml(k)) &
2157                      * orho
2158
2159!..Temperature tendency
2160         if (temp(k).lt.T_0) then
2161          tten(k) = tten(k) &
2162                    + ( lsub*ocp(k)*(pri_inu(k) + pri_ide(k) &
2163                                     + prs_ide(k) + prs_sde(k) &
2164                                     + prg_gde(k)) &
2165                     + lfus2*ocp(k)*(pri_wfz(k) + pri_rfz(k) &
2166                                     + prg_rfz(k) + prs_scw(k) &
2167                                     + prg_scw(k) + prg_gcw(k) &
2168                                     + prg_rcs(k) + prs_rcs(k) &
2169                                     + prr_rci(k) + prg_rcg(k)) &
2170                       )*orho * (1-IFDRY)
2171         else
2172          tten(k) = tten(k) &
2173                    + ( lfus*ocp(k)*(-prr_sml(k) - prr_gml(k) &
2174                                     - prr_rcg(k) - prr_rcs(k)) &
2175                      + lsub*ocp(k)*(prs_sde(k) + prg_gde(k)) &
2176                       )*orho * (1-IFDRY)
2177         endif
2178
2179      enddo
2180
2181!+---+-----------------------------------------------------------------+
2182!..Update variables for TAU+1 before condensation & sedimention.
2183!+---+-----------------------------------------------------------------+
2184      do k = kts, kte
2185         temp(k) = t1d(k) + DT*tten(k)
2186         otemp = 1./temp(k)
2187         tempc = temp(k) - 273.15
2188         qv(k) = MAX(1.E-10, qv1d(k) + DT*qvten(k))
2189         rho(k) = 0.622*pres(k)/(R*temp(k)*(qv(k)+0.622))
2190         rhof(k) = SQRT(RHO_NOT/rho(k))
2191         rhof2(k) = SQRT(rhof(k))
2192         qvs(k) = rslf(pres(k), temp(k))
2193         ssatw(k) = qv(k)/qvs(k) - 1.
2194         if (abs(ssatw(k)).lt. eps) ssatw(k) = 0.0
2195         diffu(k) = 2.11E-5*(temp(k)/273.15)**1.94 * (101325./pres(k))
2196         if (tempc .ge. 0.0) then
2197            visco(k) = (1.718+0.0049*tempc)*1.0E-5
2198         else
2199            visco(k) = (1.718+0.0049*tempc-1.2E-5*tempc*tempc)*1.0E-5
2200         endif
2201         vsc2(k) = SQRT(rho(k)/visco(k))
2202         lvap(k) = lvap0 + (2106.0 - 4218.0)*tempc
2203         tcond(k) = (5.69 + 0.0168*tempc)*1.0E-5 * 418.936
2204         ocp(k) = 1./(Cp*(1.+0.887*qv(k)))
2205         lvt2(k)=lvap(k)*lvap(k)*ocp(k)*oRv*otemp*otemp
2206
2207         if ((qc1d(k) + qcten(k)*DT) .gt. R1) then
2208            rc(k) = (qc1d(k) + qcten(k)*DT)*rho(k)
2209            L_qc(k) = .true.
2210         else
2211            rc(k) = R1
2212            L_qc(k) = .false.
2213         endif
2214
2215         if ((qi1d(k) + qiten(k)*DT) .gt. R1) then
2216            ri(k) = (qi1d(k) + qiten(k)*DT)*rho(k)
2217            ni(k) = MAX(R2, (ni1d(k) + niten(k)*DT)*rho(k))
2218            L_qi(k) = .true.
2219         else
2220            ri(k) = R1
2221            ni(k) = R2
2222            L_qi(k) = .false.
2223         endif
2224
2225         if ((qr1d(k) + qrten(k)*DT) .gt. R1) then
2226            rr(k) = (qr1d(k) + qrten(k)*DT)*rho(k)
2227            nr(k) = MAX(R2, (nr1d(k) + nrten(k)*DT)*rho(k))
2228            L_qr(k) = .true.
2229         else
2230            rr(k) = R1
2231            nr(k) = R2
2232            L_qr(k) = .false.
2233         endif
2234               
2235         if ((qs1d(k) + qsten(k)*DT) .gt. R1) then
2236            rs(k) = (qs1d(k) + qsten(k)*DT)*rho(k)
2237            L_qs(k) = .true.
2238         else
2239            rs(k) = R1
2240            L_qs(k) = .false.
2241         endif
2242
2243         if ((qg1d(k) + qgten(k)*DT) .gt. R1) then
2244            rg(k) = (qg1d(k) + qgten(k)*DT)*rho(k)
2245            L_qg(k) = .true.
2246         else
2247            rg(k) = R1
2248            L_qg(k) = .false.
2249         endif
2250      enddo
2251
2252!+---+-----------------------------------------------------------------+
2253!..With tendency-updated mixing ratios, recalculate snow moments and
2254!.. intercepts/slopes of graupel and rain.
2255!+---+-----------------------------------------------------------------+
2256      if (.not. iiwarm) then
2257      do k = kts, kte
2258         if (.not. L_qs(k)) CYCLE
2259         tc0 = MIN(-0.1, temp(k)-273.15)
2260         smob(k) = rs(k)*oams
2261
2262!..All other moments based on reference, 2nd moment.  If bm_s.ne.2,
2263!.. then we must compute actual 2nd moment and use as reference.
2264         if (bm_s.gt.(2.0-1.e-3) .and. bm_s.lt.(2.0+1.e-3)) then
2265            smo2(k) = smob(k)
2266         else
2267            loga_ = sa(1) + sa(2)*tc0 + sa(3)*bm_s &
2268               + sa(4)*tc0*bm_s + sa(5)*tc0*tc0 &
2269               + sa(6)*bm_s*bm_s + sa(7)*tc0*tc0*bm_s &
2270               + sa(8)*tc0*bm_s*bm_s + sa(9)*tc0*tc0*tc0 &
2271               + sa(10)*bm_s*bm_s*bm_s
2272            a_ = 10.0**loga_
2273            b_ = sb(1) + sb(2)*tc0 + sb(3)*bm_s &
2274               + sb(4)*tc0*bm_s + sb(5)*tc0*tc0 &
2275               + sb(6)*bm_s*bm_s + sb(7)*tc0*tc0*bm_s &
2276               + sb(8)*tc0*bm_s*bm_s + sb(9)*tc0*tc0*tc0 &
2277               + sb(10)*bm_s*bm_s*bm_s
2278            smo2(k) = (smob(k)/a_)**(1./b_)
2279         endif
2280
2281!..Calculate bm_s+1 (th) moment.  Useful for diameter calcs.
2282         loga_ = sa(1) + sa(2)*tc0 + sa(3)*cse(1) &
2283               + sa(4)*tc0*cse(1) + sa(5)*tc0*tc0 &
2284               + sa(6)*cse(1)*cse(1) + sa(7)*tc0*tc0*cse(1) &
2285               + sa(8)*tc0*cse(1)*cse(1) + sa(9)*tc0*tc0*tc0 &
2286               + sa(10)*cse(1)*cse(1)*cse(1)
2287         a_ = 10.0**loga_
2288         b_ = sb(1)+ sb(2)*tc0 + sb(3)*cse(1) + sb(4)*tc0*cse(1) &
2289              + sb(5)*tc0*tc0 + sb(6)*cse(1)*cse(1) &
2290              + sb(7)*tc0*tc0*cse(1) + sb(8)*tc0*cse(1)*cse(1) &
2291              + sb(9)*tc0*tc0*tc0 + sb(10)*cse(1)*cse(1)*cse(1)
2292         smoc(k) = a_ * smo2(k)**b_
2293
2294!..Calculate bm_s+bv_s (th) moment.  Useful for sedimentation.
2295         loga_ = sa(1) + sa(2)*tc0 + sa(3)*cse(14) &
2296               + sa(4)*tc0*cse(14) + sa(5)*tc0*tc0 &
2297               + sa(6)*cse(14)*cse(14) + sa(7)*tc0*tc0*cse(14) &
2298               + sa(8)*tc0*cse(14)*cse(14) + sa(9)*tc0*tc0*tc0 &
2299               + sa(10)*cse(14)*cse(14)*cse(14)
2300         a_ = 10.0**loga_
2301         b_ = sb(1)+ sb(2)*tc0 + sb(3)*cse(14) + sb(4)*tc0*cse(14) &
2302              + sb(5)*tc0*tc0 + sb(6)*cse(14)*cse(14) &
2303              + sb(7)*tc0*tc0*cse(14) + sb(8)*tc0*cse(14)*cse(14) &
2304              + sb(9)*tc0*tc0*tc0 + sb(10)*cse(14)*cse(14)*cse(14)
2305         smod(k) = a_ * smo2(k)**b_
2306      enddo
2307
2308!+---+-----------------------------------------------------------------+
2309!..Calculate y-intercept, slope values for graupel.
2310!+---+-----------------------------------------------------------------+
2311      N0_min = gonv_max
2312      do k = kte, kts, -1
2313         if (temp(k).lt.T_0 .and. (rc(k)+rr(k)).gt.1.E-5) then
2314            xslw1 = 5. + alog10(max(1.E-5, min(1.E-2, (rc(k)+rr(k)))))
2315         else
2316            xslw1 = 0.
2317         endif
2318         ygra1 = 5. + alog10(max(1.E-5, min(1.E-2, rg(k))))
2319         zans1 = 3.324 + (3./(5.*xslw1*ygra1/(5.*xslw1+1.+0.25*ygra1)+1.+0.25*ygra1))
2320         N0_exp = 10.**(zans1)
2321         N0_exp = MAX(DBLE(gonv_min), MIN(N0_exp, DBLE(gonv_max)))
2322         N0_min = MIN(N0_exp, N0_min)
2323         N0_exp = N0_min
2324         lam_exp = (N0_exp*am_g*cgg(1)/rg(k))**oge1
2325         lamg = lam_exp * (cgg(3)*ogg2*ogg1)**obmg
2326         ilamg(k) = 1./lamg
2327         N0_g(k) = N0_exp/(cgg(2)*lam_exp) * lamg**cge(2)
2328      enddo
2329
2330      endif
2331
2332!+---+-----------------------------------------------------------------+
2333!..Calculate y-intercept, slope values for rain.
2334!+---+-----------------------------------------------------------------+
2335      do k = kte, kts, -1
2336         lamr = (am_r*crg(3)*org2*nr(k)/rr(k))**obmr
2337         ilamr(k) = 1./lamr
2338         mvd_r(k) = (3.0 + mu_r + 0.672) / lamr
2339         N0_r(k) = nr(k)*org2*lamr**cre(2)
2340      enddo
2341
2342!+---+-----------------------------------------------------------------+
2343!..Cloud water condensation and evaporation.  Newly formulated using
2344!.. Newton-Raphson iterations (3 should suffice) as provided by B. Hall.
2345!+---+-----------------------------------------------------------------+
2346      do k = kts, kte
2347         if ( (ssatw(k).gt. eps) .or. (ssatw(k).lt. -eps .and. &
2348                   L_qc(k)) ) then
2349          clap = (qv(k)-qvs(k))/(1. + lvt2(k)*qvs(k))
2350          do n = 1, 3
2351             fcd = qvs(k)* EXP(lvt2(k)*clap) - qv(k) + clap
2352             dfcd = qvs(k)*lvt2(k)* EXP(lvt2(k)*clap) + 1.
2353             clap = clap - fcd/dfcd
2354          enddo
2355          xrc = rc(k) + clap
2356          if (xrc.gt. 0.0) then
2357             prw_vcd(k) = clap*odt
2358          else
2359             prw_vcd(k) = -rc(k)/rho(k)*odt
2360          endif
2361
2362          qcten(k) = qcten(k) + prw_vcd(k)
2363          qvten(k) = qvten(k) - prw_vcd(k)
2364          tten(k) = tten(k) + lvap(k)*ocp(k)*prw_vcd(k)*(1-IFDRY)
2365          rc(k) = MAX(R1, (qc1d(k) + DT*qcten(k))*rho(k))
2366          qv(k) = MAX(1.E-10, qv1d(k) + DT*qvten(k))
2367          temp(k) = t1d(k) + DT*tten(k)
2368          rho(k) = 0.622*pres(k)/(R*temp(k)*(qv(k)+0.622))
2369          qvs(k) = rslf(pres(k), temp(k))
2370          ssatw(k) = qv(k)/qvs(k) - 1.
2371         endif
2372      enddo
2373
2374!+---+-----------------------------------------------------------------+
2375!.. If still subsaturated, allow rain to evaporate, following
2376!.. Srivastava & Coen (1992).
2377!+---+-----------------------------------------------------------------+
2378      do k = kts, kte
2379         if ( (ssatw(k).lt. -eps) .and. L_qr(k) &
2380                     .and. (.not.(prw_vcd(k).gt. 0.)) ) then
2381          tempc = temp(k) - 273.15
2382          otemp = 1./temp(k)
2383          rhof(k) = SQRT(RHO_NOT/rho(k))
2384          rhof2(k) = SQRT(rhof(k))
2385          diffu(k) = 2.11E-5*(temp(k)/273.15)**1.94 * (101325./pres(k))
2386          if (tempc .ge. 0.0) then
2387             visco(k) = (1.718+0.0049*tempc)*1.0E-5
2388          else
2389             visco(k) = (1.718+0.0049*tempc-1.2E-5*tempc*tempc)*1.0E-5
2390          endif
2391          vsc2(k) = SQRT(rho(k)/visco(k))
2392          lvap(k) = lvap0 + (2106.0 - 4218.0)*tempc
2393          tcond(k) = (5.69 + 0.0168*tempc)*1.0E-5 * 418.936
2394          ocp(k) = 1./(Cp*(1.+0.887*qv(k)))
2395
2396          rvs = rho(k)*qvs(k)
2397          rvs_p = rvs*otemp*(lvap(k)*otemp*oRv - 1.)
2398          rvs_pp = rvs * ( otemp*(lvap(k)*otemp*oRv - 1.) &
2399                          *otemp*(lvap(k)*otemp*oRv - 1.) &
2400                          + (-2.*lvap(k)*otemp*otemp*otemp*oRv) &
2401                          + otemp*otemp)
2402          gamsc = lvap(k)*diffu(k)/tcond(k) * rvs_p
2403          alphsc = 0.5*(gamsc/(1.+gamsc))*(gamsc/(1.+gamsc)) &
2404                     * rvs_pp/rvs_p * rvs/rvs_p
2405          alphsc = MAX(1.E-9, alphsc)
2406          xsat   = MIN(-1.E-9, ssatw(k))
2407          t1_evap = 2.*PI*( 1.0 - alphsc*xsat  &
2408                 + 2.*alphsc*alphsc*xsat*xsat  &
2409                 - 5.*alphsc*alphsc*alphsc*xsat*xsat*xsat ) &
2410                 / (1.+gamsc)
2411
2412          lamr = 1./ilamr(k)
2413          prv_rev(k) = t1_evap*diffu(k)*(-ssatw(k))*N0_r(k)*rvs &
2414              * (t1_qr_ev*ilamr(k)**cre(10) &
2415              + t2_qr_ev*vsc2(k)*rhof2(k)*((lamr+0.5*fv_r)**(-cre(11))))
2416          rate_max = MIN((rr(k)/rho(k)*odts), (qvs(k)-qv(k))*odts)
2417          prv_rev(k) = MIN(DBLE(rate_max), prv_rev(k)/rho(k))
2418          pnr_rev(k) = MIN(DBLE(nr(k)*0.99/rho(k)*odts),                &   ! RAIN2M
2419                       prv_rev(k) * nr(k)/rr(k))
2420
2421          qrten(k) = qrten(k) - prv_rev(k)
2422          qvten(k) = qvten(k) + prv_rev(k)
2423          nrten(k) = nrten(k) - pnr_rev(k)
2424          tten(k) = tten(k) - lvap(k)*ocp(k)*prv_rev(k)*(1-IFDRY)
2425
2426          rr(k) = MAX(R1, (qr1d(k) + DT*qrten(k))*rho(k))
2427          qv(k) = MAX(1.E-10, qv1d(k) + DT*qvten(k))
2428          nr(k) = MAX(R2, (nr1d(k) + DT*nrten(k))*rho(k))
2429          temp(k) = t1d(k) + DT*tten(k)
2430          rho(k) = 0.622*pres(k)/(R*temp(k)*(qv(k)+0.622))
2431         endif
2432
2433      enddo
2434
2435!+---+-----------------------------------------------------------------+
2436!..Find max terminal fallspeed (distribution mass-weighted mean
2437!.. velocity) and use it to determine if we need to split the timestep
2438!.. (var nstep>1).  Either way, only bother to do sedimentation below
2439!.. 1st level that contains any sedimenting particles (k=ksed1 on down).
2440!.. New in v3.0+ is computing separate for rain, ice, snow, and
2441!.. graupel species thus making code faster with credit to J. Schmidt.
2442!+---+-----------------------------------------------------------------+
2443      nstep = 0
2444      onstep(:) = 1.0
2445      ksed1(:) = 1
2446      do k = kte+1, kts, -1
2447         vtrk(k) = 0.
2448         vtnrk(k) = 0.
2449         vtik(k) = 0.
2450         vtnik(k) = 0.
2451         vtsk(k) = 0.
2452         vtgk(k) = 0.
2453      enddo
2454      do k = kte, kts, -1
2455         vtr = 0.
2456         rhof(k) = SQRT(RHO_NOT/rho(k))
2457
2458         if (rr(k).gt. R1) then
2459          lamr = (am_r*crg(3)*org2*nr(k)/rr(k))**obmr
2460          vtr = rhof(k)*av_r*crg(6)*org3 * lamr**cre(3)                 &
2461                      *((lamr+fv_r)**(-cre(6)))
2462          vtrk(k) = vtr
2463! First below is technically correct:
2464!         vtr = rhof(k)*av_r*crg(5)*org2 * lamr**cre(2)                 &
2465!                     *((lamr+fv_r)**(-cre(5)))
2466! Test: make number fall faster (but still slower than mass)
2467! Goal: less prominent size sorting
2468          vtr = rhof(k)*av_r*crg(7)/crg(12) * lamr**cre(12)             &
2469                      *((lamr+fv_r)**(-cre(7)))
2470          vtnrk(k) = vtr
2471         endif
2472
2473         if (MAX(vtrk(k),vtnrk(k)) .gt. 1.E-3) then
2474            ksed1(1) = MAX(ksed1(1), k)
2475            delta_tp = dzq(k)/(MAX(vtrk(k),vtnrk(k)))
2476            nstep = MAX(nstep, INT(DT/delta_tp + 1.))
2477         endif
2478      enddo
2479      if (ksed1(1) .eq. kte) ksed1(1) = kte-1
2480      if (nstep .gt. 0) onstep(1) = 1./REAL(nstep)
2481
2482!+---+-----------------------------------------------------------------+
2483
2484      if (.not. iiwarm) then
2485
2486       nstep = 0
2487       do k = kte, kts, -1
2488          vti = 0.
2489
2490          if (ri(k).gt. R1) then
2491           lami = (am_i*cig(2)*oig1*ni(k)/ri(k))**obmi
2492           ilami = 1./lami
2493           vti = rhof(k)*av_i*cig(3)*oig2 * ilami**bv_i
2494           vtik(k) = vti
2495! First below is technically correct:
2496!          vti = rhof(k)*av_i*cig(4)*oig1 * ilami**bv_i
2497! Goal: less prominent size sorting
2498           vti = rhof(k)*av_i*cig(6)/cig(7) * ilami**bv_i
2499           vtnik(k) = vti
2500          endif
2501
2502          if (vtik(k) .gt. 1.E-3) then
2503             ksed1(2) = MAX(ksed1(2), k)
2504             delta_tp = dzq(k)/vtik(k)
2505             nstep = MAX(nstep, INT(DT/delta_tp + 1.))
2506          endif
2507       enddo
2508       if (ksed1(2) .eq. kte) ksed1(2) = kte-1
2509       if (nstep .gt. 0) onstep(2) = 1./REAL(nstep)
2510
2511!+---+-----------------------------------------------------------------+
2512
2513       nstep = 0
2514       do k = kte, kts, -1
2515          vts = 0.
2516
2517          if (rs(k).gt. R2) then
2518           xDs = smoc(k) / smob(k)
2519           Mrat = 1./xDs
2520           ils1 = 1./(Mrat*Lam0 + fv_s)
2521           ils2 = 1./(Mrat*Lam1 + fv_s)
2522           t1_vts = Kap0*csg(4)*ils1**cse(4)
2523           t2_vts = Kap1*Mrat**mu_s*csg(10)*ils2**cse(10)
2524           ils1 = 1./(Mrat*Lam0)
2525           ils2 = 1./(Mrat*Lam1)
2526           t3_vts = Kap0*csg(1)*ils1**cse(1)
2527           t4_vts = Kap1*Mrat**mu_s*csg(7)*ils2**cse(7)
2528           vts = rhof(k)*av_s * (t1_vts+t2_vts)/(t3_vts+t4_vts)
2529           if (temp(k).gt. T_0) then
2530            vtsk(k) = MAX(vts*vts_boost(k), vtrk(k))
2531           else
2532            vtsk(k) = vts*vts_boost(k)
2533           endif
2534          endif
2535
2536          if (vtsk(k) .gt. 1.E-3) then
2537             ksed1(3) = MAX(ksed1(3), k)
2538             delta_tp = dzq(k)/vtsk(k)
2539             nstep = MAX(nstep, INT(DT/delta_tp + 1.))
2540          endif
2541       enddo
2542       if (ksed1(3) .eq. kte) ksed1(3) = kte-1
2543       if (nstep .gt. 0) onstep(3) = 1./REAL(nstep)
2544
2545!+---+-----------------------------------------------------------------+
2546
2547       nstep = 0
2548       do k = kte, kts, -1
2549          vtg = 0.
2550
2551          if (rg(k).gt. R2) then
2552           vtg = rhof(k)*av_g*cgg(6)*ogg3 * ilamg(k)**bv_g
2553           if (temp(k).gt. T_0) then
2554            vtgk(k) = MAX(vtg, vtrk(k))
2555           else
2556            vtgk(k) = vtg
2557           endif
2558          endif
2559
2560          if (vtgk(k) .gt. 1.E-3) then
2561             ksed1(4) = MAX(ksed1(4), k)
2562             delta_tp = dzq(k)/vtgk(k)
2563             nstep = MAX(nstep, INT(DT/delta_tp + 1.))
2564          endif
2565       enddo
2566       if (ksed1(4) .eq. kte) ksed1(4) = kte-1
2567       if (nstep .gt. 0) onstep(4) = 1./REAL(nstep)
2568      endif
2569
2570!+---+-----------------------------------------------------------------+
2571!..Sedimentation of mixing ratio is the integral of v(D)*m(D)*N(D)*dD,
2572!.. whereas neglect m(D) term for number concentration.  Therefore,
2573!.. cloud ice has proper differential sedimentation.
2574!.. New in v3.0+ is computing separate for rain, ice, snow, and
2575!.. graupel species thus making code faster with credit to J. Schmidt.
2576!+---+-----------------------------------------------------------------+
2577
2578      nstep = NINT(1./onstep(1))
2579      do n = 1, nstep
2580         do k = kte, kts, -1
2581            sed_r(k) = vtrk(k)*rr(k)
2582            sed_n(k) = vtnrk(k)*nr(k)
2583         enddo
2584         k = kte
2585         odzq = 1./dzq(k)
2586         orho = 1./rho(k)
2587         qrten(k) = qrten(k) - sed_r(k)*odzq*onstep(1)*orho
2588         nrten(k) = nrten(k) - sed_n(k)*odzq*onstep(1)*orho
2589         rr(k) = MAX(R1, rr(k) - sed_r(k)*odzq*DT*onstep(1))
2590         nr(k) = MAX(R2, nr(k) - sed_n(k)*odzq*DT*onstep(1))
2591         do k = ksed1(1), kts, -1
2592            odzq = 1./dzq(k)
2593            orho = 1./rho(k)
2594            qrten(k) = qrten(k) + (sed_r(k+1)-sed_r(k)) &
2595                                               *odzq*onstep(1)*orho
2596            nrten(k) = nrten(k) + (sed_n(k+1)-sed_n(k)) &
2597                                               *odzq*onstep(1)*orho
2598            rr(k) = MAX(R1, rr(k) + (sed_r(k+1)-sed_r(k)) &
2599                                           *odzq*DT*onstep(1))
2600            nr(k) = MAX(R2, nr(k) + (sed_n(k+1)-sed_n(k)) &
2601                                           *odzq*DT*onstep(1))
2602         enddo
2603
2604         pptrain = pptrain + sed_r(kts)*DT*onstep(1)
2605      enddo
2606
2607!+---+-----------------------------------------------------------------+
2608
2609      nstep = NINT(1./onstep(2))
2610      do n = 1, nstep
2611         do k = kte, kts, -1
2612            sed_i(k) = vtik(k)*ri(k)
2613            sed_n(k) = vtnik(k)*ni(k)
2614         enddo
2615         k = kte
2616         odzq = 1./dzq(k)
2617         orho = 1./rho(k)
2618         qiten(k) = qiten(k) - sed_i(k)*odzq*onstep(2)*orho
2619         niten(k) = niten(k) - sed_n(k)*odzq*onstep(2)*orho
2620         ri(k) = MAX(R1, ri(k) - sed_i(k)*odzq*DT*onstep(2))
2621         ni(k) = MAX(R2, ni(k) - sed_n(k)*odzq*DT*onstep(2))
2622         do k = ksed1(2), kts, -1
2623            odzq = 1./dzq(k)
2624            orho = 1./rho(k)
2625            qiten(k) = qiten(k) + (sed_i(k+1)-sed_i(k)) &
2626                                               *odzq*onstep(2)*orho
2627            niten(k) = niten(k) + (sed_n(k+1)-sed_n(k)) &
2628                                               *odzq*onstep(2)*orho
2629            ri(k) = MAX(R1, ri(k) + (sed_i(k+1)-sed_i(k)) &
2630                                           *odzq*DT*onstep(2))
2631            ni(k) = MAX(R2, ni(k) + (sed_n(k+1)-sed_n(k)) &
2632                                           *odzq*DT*onstep(2))
2633         enddo
2634
2635         pptice = pptice + sed_i(kts)*DT*onstep(2)
2636      enddo
2637
2638!+---+-----------------------------------------------------------------+
2639
2640      nstep = NINT(1./onstep(3))
2641      do n = 1, nstep
2642         do k = kte, kts, -1
2643            sed_s(k) = vtsk(k)*rs(k)
2644         enddo
2645         k = kte
2646         odzq = 1./dzq(k)
2647         orho = 1./rho(k)
2648         qsten(k) = qsten(k) - sed_s(k)*odzq*onstep(3)*orho
2649         rs(k) = MAX(R1, rs(k) - sed_s(k)*odzq*DT*onstep(3))
2650         do k = ksed1(3), kts, -1
2651            odzq = 1./dzq(k)
2652            orho = 1./rho(k)
2653            qsten(k) = qsten(k) + (sed_s(k+1)-sed_s(k)) &
2654                                               *odzq*onstep(3)*orho
2655            rs(k) = MAX(R1, rs(k) + (sed_s(k+1)-sed_s(k)) &
2656                                           *odzq*DT*onstep(3))
2657         enddo
2658
2659         pptsnow = pptsnow + sed_s(kts)*DT*onstep(3)
2660      enddo
2661
2662!+---+-----------------------------------------------------------------+
2663
2664      nstep = NINT(1./onstep(4))
2665      do n = 1, nstep
2666         do k = kte, kts, -1
2667            sed_g(k) = vtgk(k)*rg(k)
2668         enddo
2669         k = kte
2670         odzq = 1./dzq(k)
2671         orho = 1./rho(k)
2672         qgten(k) = qgten(k) - sed_g(k)*odzq*onstep(4)*orho
2673         rg(k) = MAX(R1, rg(k) - sed_g(k)*odzq*DT*onstep(4))
2674         do k = ksed1(4), kts, -1
2675            odzq = 1./dzq(k)
2676            orho = 1./rho(k)
2677            qgten(k) = qgten(k) + (sed_g(k+1)-sed_g(k)) &
2678                                               *odzq*onstep(4)*orho
2679            rg(k) = MAX(R1, rg(k) + (sed_g(k+1)-sed_g(k)) &
2680                                           *odzq*DT*onstep(4))
2681         enddo
2682
2683         pptgraul = pptgraul + sed_g(kts)*DT*onstep(4)
2684      enddo
2685
2686!+---+-----------------------------------------------------------------+
2687!.. Instantly melt any cloud ice into cloud water if above 0C and
2688!.. instantly freeze any cloud water found below HGFR.
2689!+---+-----------------------------------------------------------------+
2690      if (.not. iiwarm) then
2691      do k = kts, kte
2692         xri = MAX(0.0, qi1d(k) + qiten(k)*DT)
2693         if ( (temp(k).gt. T_0) .and. (xri.gt. 0.0) ) then
2694          qcten(k) = qcten(k) + xri*odt
2695          qiten(k) = qiten(k) - xri*odt
2696          niten(k) = -ni1d(k)*odt
2697          tten(k) = tten(k) - lfus*ocp(k)*xri*odt*(1-IFDRY)
2698         endif
2699
2700         xrc = MAX(0.0, qc1d(k) + qcten(k)*DT)
2701         if ( (temp(k).lt. HGFR) .and. (xrc.gt. 0.0) ) then
2702          lfus2 = lsub - lvap(k)
2703          qiten(k) = qiten(k) + xrc*odt
2704          niten(k) = niten(k) + xrc/xm0i * odt
2705          qcten(k) = qcten(k) - xrc*odt
2706          tten(k) = tten(k) + lfus2*ocp(k)*xrc*odt*(1-IFDRY)
2707         endif
2708      enddo
2709      endif
2710
2711!+---+-----------------------------------------------------------------+
2712!.. All tendencies computed, apply and pass back final values to parent.
2713!+---+-----------------------------------------------------------------+
2714      do k = kts, kte
2715         t1d(k)  = t1d(k) + tten(k)*DT
2716         qv1d(k) = MAX(1.E-10, qv1d(k) + qvten(k)*DT)
2717         qc1d(k) = qc1d(k) + qcten(k)*DT
2718         if (qc1d(k) .le. R1) qc1d(k) = 0.0
2719         qi1d(k) = qi1d(k) + qiten(k)*DT
2720         ni1d(k) = ni1d(k) + niten(k)*DT
2721         if (qi1d(k) .le. R1) then
2722           qi1d(k) = 0.0
2723           ni1d(k) = 0.0
2724         else
2725           if (ni1d(k) .gt. R2) then
2726            lami = (am_i*cig(2)*oig1*ni1d(k)/qi1d(k))**obmi
2727            ilami = 1./lami
2728            xDi = (bm_i + mu_i + 1.) * ilami
2729            if (xDi.lt. 20.E-6) then
2730             lami = cie(2)/20.E-6
2731            elseif (xDi.gt. 300.E-6) then
2732             lami = cie(2)/300.E-6
2733            endif
2734           else
2735            lami = cie(2)/D0s
2736           endif
2737           ni1d(k) = MIN(cig(1)*oig2*qi1d(k)/am_i*lami**bm_i,           &
2738                         500.D3/rho(k))
2739         endif
2740         qr1d(k) = qr1d(k) + qrten(k)*DT
2741         nr1d(k) = nr1d(k) + nrten(k)*DT
2742         if (qr1d(k) .le. R1) then
2743           qr1d(k) = 0.0
2744           nr1d(k) = 0.0
2745         else
2746           if (nr1d(k) .gt. R2) then
2747            lamr = (am_r*crg(3)*org2*nr1d(k)/qr1d(k))**obmr
2748            mvd_r(k) = (3.0 + mu_r + 0.672) / lamr
2749            if (mvd_r(k) .gt. 2.5E-3) then
2750               mvd_r(k) = 2.5E-3
2751            elseif (mvd_r(k) .lt. D0r*0.75) then
2752               mvd_r(k) = D0r*0.75
2753            endif
2754           else
2755            if (qr1d(k) .gt. R2) then
2756               mvd_r(k) = 2.5E-3
2757            else
2758               mvd_r(k) = 2.5E-3 / 3.0**(ALOG10(R2)-ALOG10(qr1d(k)))
2759            endif
2760           endif
2761           lamr = (3.0 + mu_r + 0.672) / mvd_r(k)
2762           nr1d(k) = crg(2)*org3*qr1d(k)*lamr**bm_r / am_r
2763         endif
2764         qs1d(k) = qs1d(k) + qsten(k)*DT
2765         if (qs1d(k) .le. R1) qs1d(k) = 0.0
2766         qg1d(k) = qg1d(k) + qgten(k)*DT
2767         if (qg1d(k) .le. R1) qg1d(k) = 0.0
2768      enddo
2769
2770      end subroutine mp_thompson
2771!+---+-----------------------------------------------------------------+
2772!ctrlL
2773!+---+-----------------------------------------------------------------+
2774!..Creation of the lookup tables and support functions found below here.
2775!+---+-----------------------------------------------------------------+
2776!..Rain collecting graupel (and inverse).  Explicit CE integration.
2777!+---+-----------------------------------------------------------------+
2778
2779      subroutine qr_acr_qg
2780
2781      implicit none
2782
2783!..Local variables
2784      INTEGER:: i, j, k, m, n, n2
2785      INTEGER:: km, km_s, km_e
2786      DOUBLE PRECISION, DIMENSION(nbg):: vg, N_g
2787      DOUBLE PRECISION, DIMENSION(nbr):: vr, N_r
2788      DOUBLE PRECISION:: N0_r, N0_g, lam_exp, lamg, lamr
2789      DOUBLE PRECISION:: massg, massr, dvg, dvr, t1, t2, z1, z2, y1, y2
2790
2791!+---+
2792
2793      do n2 = 1, nbr
2794!        vr(n2) = av_r*Dr(n2)**bv_r * DEXP(-fv_r*Dr(n2))
2795         vr(n2) = -0.1021 + 4.932E3*Dr(n2) - 0.9551E6*Dr(n2)*Dr(n2)     &
2796              + 0.07934E9*Dr(n2)*Dr(n2)*Dr(n2)                          &
2797              - 0.002362E12*Dr(n2)*Dr(n2)*Dr(n2)*Dr(n2)
2798      enddo
2799      do n = 1, nbg
2800         vg(n) = av_g*Dg(n)**bv_g
2801      enddo
2802
2803!..Note values returned from wrf_dm_decomp1d are zero-based, add 1 for
2804!.. fortran indices.  J. Michalakes, 2009Oct30.
2805
2806#if ( defined( DM_PARALLEL ) && ( ! defined( STUBMPI ) ) )
2807      CALL wrf_dm_decomp1d ( ntb_r*ntb_r1, km_s, km_e )
2808#else
2809      km_s = 0
2810      km_e = ntb_r*ntb_r1 - 1
2811#endif
2812
2813      do km = km_s, km_e
2814         m = km / ntb_r1 + 1
2815         k = mod( km , ntb_r1 ) + 1
2816
2817         lam_exp = (N0r_exp(k)*am_r*crg(1)/r_r(m))**ore1
2818         lamr = lam_exp * (crg(3)*org2*org1)**obmr
2819         N0_r = N0r_exp(k)/(crg(2)*lam_exp) * lamr**cre(2)
2820         do n2 = 1, nbr
2821            N_r(n2) = N0_r*Dr(n2)**mu_r *DEXP(-lamr*Dr(n2))*dtr(n2)
2822         enddo
2823
2824         do j = 1, ntb_g
2825         do i = 1, ntb_g1
2826            lam_exp = (N0g_exp(i)*am_g*cgg(1)/r_g(j))**oge1
2827            lamg = lam_exp * (cgg(3)*ogg2*ogg1)**obmg
2828            N0_g = N0g_exp(i)/(cgg(2)*lam_exp) * lamg**cge(2)
2829            do n = 1, nbg
2830               N_g(n) = N0_g*Dg(n)**mu_g * DEXP(-lamg*Dg(n))*dtg(n)
2831            enddo
2832
2833            t1 = 0.0d0
2834            t2 = 0.0d0
2835            z1 = 0.0d0
2836            z2 = 0.0d0
2837            y1 = 0.0d0
2838            y2 = 0.0d0
2839            do n2 = 1, nbr
2840               massr = am_r * Dr(n2)**bm_r
2841               do n = 1, nbg
2842                  massg = am_g * Dg(n)**bm_g
2843
2844                  dvg = 0.5d0*((vr(n2) - vg(n)) + DABS(vr(n2)-vg(n)))
2845                  dvr = 0.5d0*((vg(n) - vr(n2)) + DABS(vg(n)-vr(n2)))
2846
2847                  t1 = t1+ PI*.25*Ef_rg*(Dg(n)+Dr(n2))*(Dg(n)+Dr(n2)) &
2848                      *dvg*massg * N_g(n)* N_r(n2)
2849                  z1 = z1+ PI*.25*Ef_rg*(Dg(n)+Dr(n2))*(Dg(n)+Dr(n2)) &
2850                      *dvg*massr * N_g(n)* N_r(n2)
2851                  y1 = y1+ PI*.25*Ef_rg*(Dg(n)+Dr(n2))*(Dg(n)+Dr(n2)) &
2852                      *dvg       * N_g(n)* N_r(n2)
2853
2854                  t2 = t2+ PI*.25*Ef_rg*(Dg(n)+Dr(n2))*(Dg(n)+Dr(n2)) &
2855                      *dvr*massr * N_g(n)* N_r(n2)
2856                  y2 = y2+ PI*.25*Ef_rg*(Dg(n)+Dr(n2))*(Dg(n)+Dr(n2)) &
2857                      *dvr       * N_g(n)* N_r(n2)
2858                  z2 = z2+ PI*.25*Ef_rg*(Dg(n)+Dr(n2))*(Dg(n)+Dr(n2)) &
2859                      *dvr*massg * N_g(n)* N_r(n2)
2860               enddo
2861 97            continue
2862            enddo
2863            tcg_racg(i,j,k,m) = t1
2864            tmr_racg(i,j,k,m) = DMIN1(z1, r_r(m)*1.0d0)
2865            tcr_gacr(i,j,k,m) = t2
2866            tmg_gacr(i,j,k,m) = z2
2867            tnr_racg(i,j,k,m) = y1
2868            tnr_gacr(i,j,k,m) = y2
2869         enddo
2870         enddo
2871      enddo
2872
2873!..Note wrf_dm_gatherv expects zero-based km_s, km_e (J. Michalakes, 2009Oct30).
2874
2875#if ( defined( DM_PARALLEL ) && ( ! defined( STUBMPI ) ) )
2876      CALL wrf_dm_gatherv(tcg_racg, ntb_g*ntb_g1, km_s, km_e, R8SIZE)
2877      CALL wrf_dm_gatherv(tmr_racg, ntb_g*ntb_g1, km_s, km_e, R8SIZE)
2878      CALL wrf_dm_gatherv(tcr_gacr, ntb_g*ntb_g1, km_s, km_e, R8SIZE)
2879      CALL wrf_dm_gatherv(tmg_gacr, ntb_g*ntb_g1, km_s, km_e, R8SIZE)
2880      CALL wrf_dm_gatherv(tnr_racg, ntb_g*ntb_g1, km_s, km_e, R8SIZE)
2881      CALL wrf_dm_gatherv(tnr_gacr, ntb_g*ntb_g1, km_s, km_e, R8SIZE)
2882#endif
2883
2884
2885      end subroutine qr_acr_qg
2886!+---+-----------------------------------------------------------------+
2887!ctrlL
2888!+---+-----------------------------------------------------------------+
2889!..Rain collecting snow (and inverse).  Explicit CE integration.
2890!+---+-----------------------------------------------------------------+
2891
2892      subroutine qr_acr_qs
2893
2894      implicit none
2895
2896!..Local variables
2897      INTEGER:: i, j, k, m, n, n2
2898      INTEGER:: km, km_s, km_e
2899      DOUBLE PRECISION, DIMENSION(nbr):: vr, D1, N_r
2900      DOUBLE PRECISION, DIMENSION(nbs):: vs, N_s
2901      DOUBLE PRECISION:: loga_, a_, b_, second, M0, M2, M3, Mrat, oM3
2902      DOUBLE PRECISION:: N0_r, lam_exp, lamr, slam1, slam2
2903      DOUBLE PRECISION:: dvs, dvr, masss, massr
2904      DOUBLE PRECISION:: t1, t2, t3, t4, z1, z2, z3, z4
2905      DOUBLE PRECISION:: y1, y2, y3, y4
2906
2907!+---+
2908
2909      do n2 = 1, nbr
2910!        vr(n2) = av_r*Dr(n2)**bv_r * DEXP(-fv_r*Dr(n2))
2911         vr(n2) = -0.1021 + 4.932E3*Dr(n2) - 0.9551E6*Dr(n2)*Dr(n2)     &
2912              + 0.07934E9*Dr(n2)*Dr(n2)*Dr(n2)                          &
2913              - 0.002362E12*Dr(n2)*Dr(n2)*Dr(n2)*Dr(n2)
2914         D1(n2) = (vr(n2)/av_s)**(1./bv_s)
2915      enddo
2916      do n = 1, nbs
2917         vs(n) = 1.5*av_s*Ds(n)**bv_s * DEXP(-fv_s*Ds(n))
2918      enddo
2919
2920!..Note values returned from wrf_dm_decomp1d are zero-based, add 1 for
2921!.. fortran indices.  J. Michalakes, 2009Oct30.
2922
2923#if ( defined( DM_PARALLEL ) && ( ! defined( STUBMPI ) ) )
2924      CALL wrf_dm_decomp1d ( ntb_r*ntb_r1, km_s, km_e )
2925#else
2926      km_s = 0
2927      km_e = ntb_r*ntb_r1 - 1
2928#endif
2929
2930      do km = km_s, km_e
2931         m = km / ntb_r1 + 1
2932         k = mod( km , ntb_r1 ) + 1
2933
2934         lam_exp = (N0r_exp(k)*am_r*crg(1)/r_r(m))**ore1
2935         lamr = lam_exp * (crg(3)*org2*org1)**obmr
2936         N0_r = N0r_exp(k)/(crg(2)*lam_exp) * lamr**cre(2)
2937         do n2 = 1, nbr
2938            N_r(n2) = N0_r*Dr(n2)**mu_r * DEXP(-lamr*Dr(n2))*dtr(n2)
2939         enddo
2940
2941         do j = 1, ntb_t
2942            do i = 1, ntb_s
2943
2944!..From the bm_s moment, compute plus one moment.  If we are not
2945!.. using bm_s=2, then we must transform to the pure 2nd moment
2946!.. (variable called "second") and then to the bm_s+1 moment.
2947
2948               M2 = r_s(i)*oams *1.0d0
2949               if (bm_s.gt.2.0-1.E-3 .and. bm_s.lt.2.0+1.E-3) then
2950                  loga_ = sa(1) + sa(2)*Tc(j) + sa(3)*bm_s &
2951                     + sa(4)*Tc(j)*bm_s + sa(5)*Tc(j)*Tc(j) &
2952                     + sa(6)*bm_s*bm_s + sa(7)*Tc(j)*Tc(j)*bm_s &
2953                     + sa(8)*Tc(j)*bm_s*bm_s + sa(9)*Tc(j)*Tc(j)*Tc(j) &
2954                     + sa(10)*bm_s*bm_s*bm_s
2955                  a_ = 10.0**loga_
2956                  b_ = sb(1) + sb(2)*Tc(j) + sb(3)*bm_s &
2957                     + sb(4)*Tc(j)*bm_s + sb(5)*Tc(j)*Tc(j) &
2958                     + sb(6)*bm_s*bm_s + sb(7)*Tc(j)*Tc(j)*bm_s &
2959                     + sb(8)*Tc(j)*bm_s*bm_s + sb(9)*Tc(j)*Tc(j)*Tc(j) &
2960                     + sb(10)*bm_s*bm_s*bm_s
2961                  second = (M2/a_)**(1./b_)
2962               else
2963                  second = M2
2964               endif
2965
2966               loga_ = sa(1) + sa(2)*Tc(j) + sa(3)*cse(1) &
2967                  + sa(4)*Tc(j)*cse(1) + sa(5)*Tc(j)*Tc(j) &
2968                  + sa(6)*cse(1)*cse(1) + sa(7)*Tc(j)*Tc(j)*cse(1) &
2969                  + sa(8)*Tc(j)*cse(1)*cse(1) + sa(9)*Tc(j)*Tc(j)*Tc(j) &
2970                  + sa(10)*cse(1)*cse(1)*cse(1)
2971               a_ = 10.0**loga_
2972               b_ = sb(1)+sb(2)*Tc(j)+sb(3)*cse(1) + sb(4)*Tc(j)*cse(1) &
2973                  + sb(5)*Tc(j)*Tc(j) + sb(6)*cse(1)*cse(1) &
2974                  + sb(7)*Tc(j)*Tc(j)*cse(1) + sb(8)*Tc(j)*cse(1)*cse(1) &
2975                  + sb(9)*Tc(j)*Tc(j)*Tc(j)+sb(10)*cse(1)*cse(1)*cse(1)
2976               M3 = a_ * second**b_
2977
2978               oM3 = 1./M3
2979               Mrat = M2*(M2*oM3)*(M2*oM3)*(M2*oM3)
2980               M0   = (M2*oM3)**mu_s
2981               slam1 = M2 * oM3 * Lam0
2982               slam2 = M2 * oM3 * Lam1
2983
2984               do n = 1, nbs
2985                  N_s(n) = Mrat*(Kap0*DEXP(-slam1*Ds(n)) &
2986                      + Kap1*M0*Ds(n)**mu_s * DEXP(-slam2*Ds(n)))*dts(n)
2987               enddo
2988
2989               t1 = 0.0d0
2990               t2 = 0.0d0
2991               t3 = 0.0d0
2992               t4 = 0.0d0
2993               z1 = 0.0d0
2994               z2 = 0.0d0
2995               z3 = 0.0d0
2996               z4 = 0.0d0
2997               y1 = 0.0d0
2998               y2 = 0.0d0
2999               y3 = 0.0d0
3000               y4 = 0.0d0
3001               do n2 = 1, nbr
3002                  massr = am_r * Dr(n2)**bm_r
3003                  do n = 1, nbs
3004                     masss = am_s * Ds(n)**bm_s
3005     
3006                     dvs = 0.5d0*((vr(n2) - vs(n)) + DABS(vr(n2)-vs(n)))
3007                     dvr = 0.5d0*((vs(n) - vr(n2)) + DABS(vs(n)-vr(n2)))
3008
3009                     if (massr .gt. 2.5*masss) then
3010                     t1 = t1+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3011                         *dvs*masss * N_s(n)* N_r(n2)
3012                     z1 = z1+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3013                         *dvs*massr * N_s(n)* N_r(n2)
3014                     y1 = y1+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3015                         *dvs       * N_s(n)* N_r(n2)
3016                     else
3017                     t3 = t3+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3018                         *dvs*masss * N_s(n)* N_r(n2)
3019                     z3 = z3+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3020                         *dvs*massr * N_s(n)* N_r(n2)
3021                     y3 = y3+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3022                         *dvs       * N_s(n)* N_r(n2)
3023                     endif
3024
3025                     if (massr .gt. 2.5*masss) then
3026                     t2 = t2+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3027                         *dvr*massr * N_s(n)* N_r(n2)
3028                     y2 = y2+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3029                         *dvr       * N_s(n)* N_r(n2)
3030                     z2 = z2+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3031                         *dvr*masss * N_s(n)* N_r(n2)
3032                     else
3033                     t4 = t4+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3034                         *dvr*massr * N_s(n)* N_r(n2)
3035                     y4 = y4+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3036                         *dvr       * N_s(n)* N_r(n2)
3037                     z4 = z4+ PI*.25*Ef_rs*(Ds(n)+Dr(n2))*(Ds(n)+Dr(n2)) &
3038                         *dvr*masss * N_s(n)* N_r(n2)
3039                     endif
3040
3041                  enddo
3042               enddo
3043               tcs_racs1(i,j,k,m) = t1
3044               tmr_racs1(i,j,k,m) = DMIN1(z1, r_r(m)*1.0d0)
3045               tcs_racs2(i,j,k,m) = t3
3046               tmr_racs2(i,j,k,m) = z3
3047               tcr_sacr1(i,j,k,m) = t2
3048               tms_sacr1(i,j,k,m) = z2
3049               tcr_sacr2(i,j,k,m) = t4
3050               tms_sacr2(i,j,k,m) = z4
3051               tnr_racs1(i,j,k,m) = y1
3052               tnr_racs2(i,j,k,m) = y3
3053               tnr_sacr1(i,j,k,m) = y2
3054               tnr_sacr2(i,j,k,m) = y4
3055            enddo
3056         enddo
3057      enddo
3058
3059!..Note wrf_dm_gatherv expects zero-based km_s, km_e (J. Michalakes, 2009Oct30).
3060
3061#if ( defined( DM_PARALLEL ) && ( ! defined( STUBMPI ) ) )
3062      CALL wrf_dm_gatherv(tcs_racs1, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3063      CALL wrf_dm_gatherv(tmr_racs1, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3064      CALL wrf_dm_gatherv(tcs_racs2, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3065      CALL wrf_dm_gatherv(tmr_racs2, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3066      CALL wrf_dm_gatherv(tcr_sacr1, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3067      CALL wrf_dm_gatherv(tms_sacr1, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3068      CALL wrf_dm_gatherv(tcr_sacr2, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3069      CALL wrf_dm_gatherv(tms_sacr2, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3070      CALL wrf_dm_gatherv(tnr_racs1, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3071      CALL wrf_dm_gatherv(tnr_racs2, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3072      CALL wrf_dm_gatherv(tnr_sacr1, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3073      CALL wrf_dm_gatherv(tnr_sacr2, ntb_s*ntb_t, km_s, km_e, R8SIZE)
3074#endif
3075
3076
3077      end subroutine qr_acr_qs
3078!+---+-----------------------------------------------------------------+
3079!ctrlL
3080!+---+-----------------------------------------------------------------+
3081!..This is a literal adaptation of Bigg (1954) probability of drops of
3082!..a particular volume freezing.  Given this probability, simply freeze
3083!..the proportion of drops summing their masses.
3084!+---+-----------------------------------------------------------------+
3085
3086      subroutine freezeH2O
3087
3088      implicit none
3089
3090!..Local variables
3091      INTEGER:: i, j, k, n, n2
3092      DOUBLE PRECISION, DIMENSION(nbr):: N_r, massr
3093      DOUBLE PRECISION, DIMENSION(nbc):: N_c, massc
3094      DOUBLE PRECISION:: sum1, sum2, sumn1, sumn2, &
3095                         prob, vol, Texp, orho_w, &
3096                         lam_exp, lamr, N0_r, lamc, N0_c, y
3097
3098!+---+
3099
3100      orho_w = 1./rho_w
3101
3102      do n2 = 1, nbr
3103         massr(n2) = am_r*Dr(n2)**bm_r
3104      enddo
3105      do n = 1, nbc
3106         massc(n) = am_r*Dc(n)**bm_r
3107      enddo
3108
3109!..Freeze water (smallest drops become cloud ice, otherwise graupel).
3110      do k = 1, 45
3111!         print*, ' Freezing water for temp = ', -k
3112         Texp = DEXP( DFLOAT(k) ) - 1.0D0
3113         do j = 1, ntb_r1
3114            do i = 1, ntb_r
3115               lam_exp = (N0r_exp(j)*am_r*crg(1)/r_r(i))**ore1
3116               lamr = lam_exp * (crg(3)*org2*org1)**obmr
3117               N0_r = N0r_exp(j)/(crg(2)*lam_exp) * lamr**cre(2)
3118               sum1 = 0.0d0
3119               sum2 = 0.0d0
3120               sumn1 = 0.0d0
3121               sumn2 = 0.0d0
3122               do n2 = 1, nbr
3123                  N_r(n2) = N0_r*Dr(n2)**mu_r*DEXP(-lamr*Dr(n2))*dtr(n2)
3124                  vol = massr(n2)*orho_w
3125                  prob = 1.0D0 - DEXP(-120.0D0*vol*5.2D-4 * Texp)
3126                  if (massr(n2) .lt. xm0g) then
3127                     sumn1 = sumn1 + prob*N_r(n2)
3128                     sum1 = sum1 + prob*N_r(n2)*massr(n2)
3129                  else
3130                     sumn2 = sumn2 + prob*N_r(n2)
3131                     sum2 = sum2 + prob*N_r(n2)*massr(n2)
3132                  endif
3133               enddo
3134               tpi_qrfz(i,j,k) = sum1
3135               tni_qrfz(i,j,k) = sumn1
3136               tpg_qrfz(i,j,k) = sum2
3137               tnr_qrfz(i,j,k) = sumn2
3138            enddo
3139         enddo
3140         do i = 1, ntb_c
3141            lamc = 1.0D-6 * (Nt_c*am_r* ccg(2) * ocg1 / r_c(i))**obmr
3142            N0_c = 1.0D-18 * Nt_c*ocg1 * lamc**cce(1)
3143            sum1 = 0.0d0
3144            sumn2 = 0.0d0
3145            do n = 1, nbc
3146               y = Dc(n)*1.0D6
3147               vol = massc(n)*orho_w
3148               prob = 1.0D0 - DEXP(-120.0D0*vol*5.2D-4 * Texp)
3149               N_c(n) = N0_c* y**mu_c * EXP(-lamc*y)*dtc(n)
3150               N_c(n) = 1.0D24 * N_c(n)
3151               sumn2 = sumn2 + prob*N_c(n)
3152               sum1 = sum1 + prob*N_c(n)*massc(n)
3153            enddo
3154            tpi_qcfz(i,k) = sum1
3155            tni_qcfz(i,k) = sumn2
3156         enddo
3157      enddo
3158
3159      end subroutine freezeH2O
3160!+---+-----------------------------------------------------------------+
3161!ctrlL
3162!+---+-----------------------------------------------------------------+
3163!..Cloud ice converting to snow since portion greater than min snow
3164!.. size.  Given cloud ice content (kg/m**3), number concentration
3165!.. (#/m**3) and gamma shape parameter, mu_i, break the distrib into
3166!.. bins and figure out the mass/number of ice with sizes larger than
3167!.. D0s.  Also, compute incomplete gamma function for the integration
3168!.. of ice depositional growth from diameter=0 to D0s.  Amount of
3169!.. ice depositional growth is this portion of distrib while larger
3170!.. diameters contribute to snow growth (as in Harrington et al. 1995).
3171!+---+-----------------------------------------------------------------+
3172
3173      subroutine qi_aut_qs
3174
3175      implicit none
3176
3177!..Local variables
3178      INTEGER:: i, j, n2
3179      DOUBLE PRECISION, DIMENSION(nbi):: N_i
3180      DOUBLE PRECISION:: N0_i, lami, Di_mean, t1, t2
3181      REAL:: xlimit_intg
3182
3183!+---+
3184
3185      do j = 1, ntb_i1
3186         do i = 1, ntb_i
3187            lami = (am_i*cig(2)*oig1*Nt_i(j)/r_i(i))**obmi
3188            Di_mean = (bm_i + mu_i + 1.) / lami
3189            N0_i = Nt_i(j)*oig1 * lami**cie(1)
3190            t1 = 0.0d0
3191            t2 = 0.0d0
3192            if (SNGL(Di_mean) .gt. 5.*D0s) then
3193             t1 = r_i(i)
3194             t2 = Nt_i(j)
3195             tpi_ide(i,j) = 0.0D0
3196            elseif (SNGL(Di_mean) .lt. D0i) then
3197             t1 = 0.0D0
3198             t2 = 0.0D0
3199             tpi_ide(i,j) = 1.0D0
3200            else
3201             xlimit_intg = lami*D0s
3202             tpi_ide(i,j) = GAMMP(mu_i+2.0, xlimit_intg) * 1.0D0
3203             do n2 = 1, nbi
3204               N_i(n2) = N0_i*Di(n2)**mu_i * DEXP(-lami*Di(n2))*dti(n2)
3205               if (Di(n2).ge.D0s) then
3206                  t1 = t1 + N_i(n2) * am_i*Di(n2)**bm_i
3207                  t2 = t2 + N_i(n2)
3208               endif
3209             enddo
3210            endif
3211            tps_iaus(i,j) = t1
3212            tni_iaus(i,j) = t2
3213         enddo
3214      enddo
3215
3216      end subroutine qi_aut_qs
3217!ctrlL
3218!+---+-----------------------------------------------------------------+
3219!..Variable collision efficiency for rain collecting cloud water using
3220!.. method of Beard and Grover, 1974 if a/A less than 0.25; otherwise
3221!.. uses polynomials to get close match of Pruppacher & Klett Fig 14-9.
3222!+---+-----------------------------------------------------------------+
3223
3224      subroutine table_Efrw
3225
3226      implicit none
3227
3228!..Local variables
3229      DOUBLE PRECISION:: vtr, stokes, reynolds, Ef_rw
3230      DOUBLE PRECISION:: p, yc0, F, G, H, z, K0, X
3231      INTEGER:: i, j
3232
3233      do j = 1, nbc
3234      do i = 1, nbr
3235         Ef_rw = 0.0
3236         p = Dc(j)/Dr(i)
3237         if (Dr(i).lt.50.E-6 .or. Dc(j).lt.3.E-6) then
3238          t_Efrw(i,j) = 0.0
3239         elseif (p.gt.0.25) then
3240          X = Dc(j)*1.D6
3241          if (Dr(i) .lt. 75.e-6) then
3242             Ef_rw = 0.026794*X - 0.20604
3243          elseif (Dr(i) .lt. 125.e-6) then
3244             Ef_rw = -0.00066842*X*X + 0.061542*X - 0.37089
3245          elseif (Dr(i) .lt. 175.e-6) then
3246             Ef_rw = 4.091e-06*X*X*X*X - 0.00030908*X*X*X               &
3247                   + 0.0066237*X*X - 0.0013687*X - 0.073022
3248          elseif (Dr(i) .lt. 250.e-6) then
3249             Ef_rw = 9.6719e-5*X*X*X - 0.0068901*X*X + 0.17305*X        &
3250                   - 0.65988
3251          elseif (Dr(i) .lt. 350.e-6) then
3252             Ef_rw = 9.0488e-5*X*X*X - 0.006585*X*X + 0.16606*X         &
3253                   - 0.56125
3254          else
3255             Ef_rw = 0.00010721*X*X*X - 0.0072962*X*X + 0.1704*X        &
3256                   - 0.46929
3257          endif
3258         else
3259          vtr = -0.1021 + 4.932E3*Dr(i) - 0.9551E6*Dr(i)*Dr(i) &
3260              + 0.07934E9*Dr(i)*Dr(i)*Dr(i) &
3261              - 0.002362E12*Dr(i)*Dr(i)*Dr(i)*Dr(i)
3262          stokes = Dc(j)*Dc(j)*vtr*rho_w/(9.*1.718E-5*Dr(i))
3263          reynolds = 9.*stokes/(p*p*rho_w)
3264
3265          F = DLOG(reynolds)
3266          G = -0.1007D0 - 0.358D0*F + 0.0261D0*F*F
3267          K0 = DEXP(G)
3268          z = DLOG(stokes/(K0+1.D-15))
3269          H = 0.1465D0 + 1.302D0*z - 0.607D0*z*z + 0.293D0*z*z*z
3270          yc0 = 2.0D0/PI * ATAN(H)
3271          Ef_rw = (yc0+p)*(yc0+p) / ((1.+p)*(1.+p))
3272
3273         endif
3274
3275         t_Efrw(i,j) = MAX(0.0, MIN(SNGL(Ef_rw), 0.95))
3276
3277      enddo
3278      enddo
3279
3280      end subroutine table_Efrw
3281!ctrlL
3282!+---+-----------------------------------------------------------------+
3283!..Variable collision efficiency for snow collecting cloud water using
3284!.. method of Wang and Ji, 2000 except equate melted snow diameter to
3285!.. their "effective collision cross-section."
3286!+---+-----------------------------------------------------------------+
3287
3288      subroutine table_Efsw
3289
3290      implicit none
3291
3292!..Local variables
3293      DOUBLE PRECISION:: Ds_m, vts, vtc, stokes, reynolds, Ef_sw
3294      DOUBLE PRECISION:: p, yc0, F, G, H, z, K0
3295      INTEGER:: i, j
3296
3297      do j = 1, nbc
3298      vtc = 1.19D4 * (1.0D4*Dc(j)*Dc(j)*0.25D0)
3299      do i = 1, nbs
3300         vts = av_s*Ds(i)**bv_s * DEXP(-fv_s*Ds(i)) - vtc
3301         Ds_m = (am_s*Ds(i)**bm_s / am_r)**obmr
3302         p = Dc(j)/Ds_m
3303         if (p.gt.0.25 .or. Ds(i).lt.D0s .or. Dc(j).lt.6.E-6 &
3304               .or. vts.lt.1.E-3) then
3305          t_Efsw(i,j) = 0.0
3306         else
3307          stokes = Dc(j)*Dc(j)*vts*rho_w/(9.*1.718E-5*Ds_m)
3308          reynolds = 9.*stokes/(p*p*rho_w)
3309
3310          F = DLOG(reynolds)
3311          G = -0.1007D0 - 0.358D0*F + 0.0261D0*F*F
3312          K0 = DEXP(G)
3313          z = DLOG(stokes/(K0+1.D-15))
3314          H = 0.1465D0 + 1.302D0*z - 0.607D0*z*z + 0.293D0*z*z*z
3315          yc0 = 2.0D0/PI * ATAN(H)
3316          Ef_sw = (yc0+p)*(yc0+p) / ((1.+p)*(1.+p))
3317
3318          t_Efsw(i,j) = MAX(0.0, MIN(SNGL(Ef_sw), 0.95))
3319         endif
3320
3321      enddo
3322      enddo
3323
3324      end subroutine table_Efsw
3325!ctrlL
3326!+---+-----------------------------------------------------------------+
3327!..Integrate rain size distribution from zero to D-star to compute the
3328!.. number of drops smaller than D-star that evaporate in a single
3329!.. timestep.  Drops larger than D-star dont evaporate entirely so do
3330!.. not affect number concentration.
3331!+---+-----------------------------------------------------------------+
3332
3333      subroutine table_dropEvap
3334
3335      implicit none
3336
3337!..Local variables
3338      DOUBLE PRECISION:: Nt_r, N0, lam_exp, lam
3339      REAL:: xlimit_intg
3340      INTEGER:: i, j, k
3341
3342      do k = 1, ntb_r
3343      do j = 1, ntb_r1
3344         lam_exp = (N0r_exp(j)*am_r*crg(1)/r_r(k))**ore1
3345         lam = lam_exp * (crg(3)*org2*org1)**obmr
3346         N0 = N0r_exp(j)/(crg(2)*lam_exp) * lam**cre(2)
3347         Nt_r = N0 * crg(2) / lam**cre(2)
3348
3349         do i = 1, nbr
3350            xlimit_intg = lam*Dr(i)
3351            tnr_rev(i,j,k) = GAMMP(mu_r+1.0, xlimit_intg) * Nt_r
3352         enddo
3353
3354      enddo
3355      enddo
3356
3357      end subroutine table_dropEvap
3358
3359! TO APPLY TABLE ABOVE
3360!..Rain lookup table indexes.
3361!         Dr_star = DSQRT(-2.D0*DT * t1_evap/(2.*PI) &
3362!                 * 0.78*4.*diffu(k)*xsat*rvs/rho_w)
3363!         idx_d = NINT(1.0 + FLOAT(nbr) * DLOG(Dr_star/D0r)             &
3364!               / DLOG(Dr(nbr)/D0r))
3365!         idx_d = MAX(1, MIN(idx_d, nbr))
3366!
3367!         nir = NINT(ALOG10(rr(k)))
3368!         do nn = nir-1, nir+1
3369!            n = nn
3370!            if ( (rr(k)/10.**nn).ge.1.0 .and. &
3371!                 (rr(k)/10.**nn).lt.10.0) goto 154
3372!         enddo
3373!154      continue
3374!         idx_r = INT(rr(k)/10.**n) + 10*(n-nir2) - (n-nir2)
3375!         idx_r = MAX(1, MIN(idx_r, ntb_r))
3376!
3377!         lamr = (am_r*crg(3)*org2*nr(k)/rr(k))**obmr
3378!         lam_exp = lamr * (crg(3)*org2*org1)**bm_r
3379!         N0_exp = org1*rr(k)/am_r * lam_exp**cre(1)
3380!         nir = NINT(DLOG10(N0_exp))
3381!         do nn = nir-1, nir+1
3382!            n = nn
3383!            if ( (N0_exp/10.**nn).ge.1.0 .and. &
3384!                 (N0_exp/10.**nn).lt.10.0) goto 155
3385!         enddo
3386!155      continue
3387!         idx_r1 = INT(N0_exp/10.**n) + 10*(n-nir3) - (n-nir3)
3388!         idx_r1 = MAX(1, MIN(idx_r1, ntb_r1))
3389!
3390!         pnr_rev(k) = MIN(nr(k)*odts, SNGL(tnr_rev(idx_d,idx_r1,idx_r) &   ! RAIN2M
3391!                    * odts))
3392!
3393!ctrlL
3394!+---+-----------------------------------------------------------------+
3395!+---+-----------------------------------------------------------------+
3396      SUBROUTINE GCF(GAMMCF,A,X,GLN)
3397!     --- RETURNS THE INCOMPLETE GAMMA FUNCTION Q(A,X) EVALUATED BY ITS
3398!     --- CONTINUED FRACTION REPRESENTATION AS GAMMCF.  ALSO RETURNS
3399!     --- LN(GAMMA(A)) AS GLN.  THE CONTINUED FRACTION IS EVALUATED BY
3400!     --- A MODIFIED LENTZ METHOD.
3401!     --- USES GAMMLN
3402      IMPLICIT NONE
3403      INTEGER, PARAMETER:: ITMAX=100
3404      REAL, PARAMETER:: gEPS=3.E-7
3405      REAL, PARAMETER:: FPMIN=1.E-30
3406      REAL, INTENT(IN):: A, X
3407      REAL:: GAMMCF,GLN
3408      INTEGER:: I
3409      REAL:: AN,B,C,D,DEL,H
3410      GLN=GAMMLN(A)
3411      B=X+1.-A
3412      C=1./FPMIN
3413      D=1./B
3414      H=D
3415      DO 11 I=1,ITMAX
3416        AN=-I*(I-A)
3417        B=B+2.
3418        D=AN*D+B
3419        IF(ABS(D).LT.FPMIN)D=FPMIN
3420        C=B+AN/C
3421        IF(ABS(C).LT.FPMIN)C=FPMIN
3422        D=1./D
3423        DEL=D*C
3424        H=H*DEL
3425        IF(ABS(DEL-1.).LT.gEPS)GOTO 1
3426 11   CONTINUE
3427      PRINT *, 'A TOO LARGE, ITMAX TOO SMALL IN GCF'
3428 1    GAMMCF=EXP(-X+A*LOG(X)-GLN)*H
3429      END SUBROUTINE GCF
3430!  (C) Copr. 1986-92 Numerical Recipes Software 2.02
3431!+---+-----------------------------------------------------------------+
3432      SUBROUTINE GSER(GAMSER,A,X,GLN)
3433!     --- RETURNS THE INCOMPLETE GAMMA FUNCTION P(A,X) EVALUATED BY ITS
3434!     --- ITS SERIES REPRESENTATION AS GAMSER.  ALSO RETURNS LN(GAMMA(A))
3435!     --- AS GLN.
3436!     --- USES GAMMLN
3437      IMPLICIT NONE
3438      INTEGER, PARAMETER:: ITMAX=100
3439      REAL, PARAMETER:: gEPS=3.E-7
3440      REAL, INTENT(IN):: A, X
3441      REAL:: GAMSER,GLN
3442      INTEGER:: N
3443      REAL:: AP,DEL,SUM
3444      GLN=GAMMLN(A)
3445      IF(X.LE.0.)THEN
3446        IF(X.LT.0.) PRINT *, 'X < 0 IN GSER'
3447        GAMSER=0.
3448        RETURN
3449      ENDIF
3450      AP=A
3451      SUM=1./A
3452      DEL=SUM
3453      DO 11 N=1,ITMAX
3454        AP=AP+1.
3455        DEL=DEL*X/AP
3456        SUM=SUM+DEL
3457        IF(ABS(DEL).LT.ABS(SUM)*gEPS)GOTO 1
3458 11   CONTINUE
3459      PRINT *,'A TOO LARGE, ITMAX TOO SMALL IN GSER'
3460 1    GAMSER=SUM*EXP(-X+A*LOG(X)-GLN)
3461      END SUBROUTINE GSER
3462!  (C) Copr. 1986-92 Numerical Recipes Software 2.02
3463!+---+-----------------------------------------------------------------+
3464      REAL FUNCTION GAMMLN(XX)
3465!     --- RETURNS THE VALUE LN(GAMMA(XX)) FOR XX > 0.
3466      IMPLICIT NONE
3467      REAL, INTENT(IN):: XX
3468      DOUBLE PRECISION, PARAMETER:: STP = 2.5066282746310005D0
3469      DOUBLE PRECISION, DIMENSION(6), PARAMETER:: &
3470               COF = (/76.18009172947146D0, -86.50532032941677D0, &
3471                       24.01409824083091D0, -1.231739572450155D0, &
3472                      .1208650973866179D-2, -.5395239384953D-5/)
3473      DOUBLE PRECISION:: SER,TMP,X,Y
3474      INTEGER:: J
3475
3476      X=XX
3477      Y=X
3478      TMP=X+5.5D0
3479      TMP=(X+0.5D0)*LOG(TMP)-TMP
3480      SER=1.000000000190015D0
3481      DO 11 J=1,6
3482        Y=Y+1.D0
3483        SER=SER+COF(J)/Y
348411    CONTINUE
3485      GAMMLN=TMP+LOG(STP*SER/X)
3486      END FUNCTION GAMMLN
3487!  (C) Copr. 1986-92 Numerical Recipes Software 2.02
3488!+---+-----------------------------------------------------------------+
3489      REAL FUNCTION GAMMP(A,X)
3490!     --- COMPUTES THE INCOMPLETE GAMMA FUNCTION P(A,X)
3491!     --- SEE ABRAMOWITZ AND STEGUN 6.5.1
3492!     --- USES GCF,GSER
3493      IMPLICIT NONE
3494      REAL, INTENT(IN):: A,X
3495      REAL:: GAMMCF,GAMSER,GLN
3496      GAMMP = 0.
3497      IF((X.LT.0.) .OR. (A.LE.0.)) THEN
3498        PRINT *, 'BAD ARGUMENTS IN GAMMP'
3499        RETURN
3500      ELSEIF(X.LT.A+1.)THEN
3501        CALL GSER(GAMSER,A,X,GLN)
3502        GAMMP=GAMSER
3503      ELSE
3504        CALL GCF(GAMMCF,A,X,GLN)
3505        GAMMP=1.-GAMMCF
3506      ENDIF
3507      END FUNCTION GAMMP
3508!  (C) Copr. 1986-92 Numerical Recipes Software 2.02
3509!+---+-----------------------------------------------------------------+
3510      REAL FUNCTION WGAMMA(y)
3511
3512      IMPLICIT NONE
3513      REAL, INTENT(IN):: y
3514
3515      WGAMMA = EXP(GAMMLN(y))
3516
3517      END FUNCTION WGAMMA
3518!+---+-----------------------------------------------------------------+
3519! THIS FUNCTION CALCULATES THE LIQUID SATURATION VAPOR MIXING RATIO AS
3520! A FUNCTION OF TEMPERATURE AND PRESSURE
3521!
3522      REAL FUNCTION RSLF(P,T)
3523
3524      IMPLICIT NONE
3525      REAL, INTENT(IN):: P, T
3526      REAL:: ESL,X
3527      REAL, PARAMETER:: C0= .611583699E03
3528      REAL, PARAMETER:: C1= .444606896E02
3529      REAL, PARAMETER:: C2= .143177157E01
3530      REAL, PARAMETER:: C3= .264224321E-1
3531      REAL, PARAMETER:: C4= .299291081E-3
3532      REAL, PARAMETER:: C5= .203154182E-5
3533      REAL, PARAMETER:: C6= .702620698E-8
3534      REAL, PARAMETER:: C7= .379534310E-11
3535      REAL, PARAMETER:: C8=-.321582393E-13
3536
3537      X=MAX(-80.,T-273.16)
3538
3539!      ESL=612.2*EXP(17.67*X/(T-29.65))
3540      ESL=C0+X*(C1+X*(C2+X*(C3+X*(C4+X*(C5+X*(C6+X*(C7+X*C8)))))))
3541      RSLF=.622*ESL/(P-ESL)
3542
3543!    ALTERNATIVE
3544!  ; Source: Murphy and Koop, Review of the vapour pressure of ice and
3545!             supercooled water for atmospheric applications, Q. J. R.
3546!             Meteorol. Soc (2005), 131, pp. 1539-1565.
3547!    ESL = EXP(54.842763 - 6763.22 / T - 4.210 * ALOG(T) + 0.000367 * T
3548!        + TANH(0.0415 * (T - 218.8)) * (53.878 - 1331.22
3549!        / T - 9.44523 * ALOG(T) + 0.014025 * T))
3550
3551      END FUNCTION RSLF
3552!+---+-----------------------------------------------------------------+
3553! THIS FUNCTION CALCULATES THE ICE SATURATION VAPOR MIXING RATIO AS A
3554! FUNCTION OF TEMPERATURE AND PRESSURE
3555!
3556      REAL FUNCTION RSIF(P,T)
3557
3558      IMPLICIT NONE
3559      REAL, INTENT(IN):: P, T
3560      REAL:: ESI,X
3561      REAL, PARAMETER:: C0= .609868993E03
3562      REAL, PARAMETER:: C1= .499320233E02
3563      REAL, PARAMETER:: C2= .184672631E01
3564      REAL, PARAMETER:: C3= .402737184E-1
3565      REAL, PARAMETER:: C4= .565392987E-3
3566      REAL, PARAMETER:: C5= .521693933E-5
3567      REAL, PARAMETER:: C6= .307839583E-7
3568      REAL, PARAMETER:: C7= .105785160E-9
3569      REAL, PARAMETER:: C8= .161444444E-12
3570
3571      X=MAX(-80.,T-273.16)
3572      ESI=C0+X*(C1+X*(C2+X*(C3+X*(C4+X*(C5+X*(C6+X*(C7+X*C8)))))))
3573      RSIF=.622*ESI/(P-ESI)
3574
3575!    ALTERNATIVE
3576!  ; Source: Murphy and Koop, Review of the vapour pressure of ice and
3577!             supercooled water for atmospheric applications, Q. J. R.
3578!             Meteorol. Soc (2005), 131, pp. 1539-1565.
3579!     ESI = EXP(9.550426 - 5723.265/T + 3.53068*ALOG(T) - 0.00728332*T)
3580
3581      END FUNCTION RSIF
3582!+---+-----------------------------------------------------------------+
3583
3584!+---+-----------------------------------------------------------------+
3585END MODULE module_mp_thompson
3586!+---+-----------------------------------------------------------------+
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