source: LMDZ6/branches/LMDZ_cdrag_LSCE/libf/phylmd/lscp_ini_mod.F90 @ 5098

Last change on this file since 5098 was 4669, checked in by Laurent Fairhead, 15 months ago

Merged with trunk revision 4586 corresponding to june 2023 testing
File size: 10.5 KB
Line 
1module lscp_ini_mod
2
3implicit none
4
5  ! PARAMETERS for lscp:
6  !--------------------
7 
8  REAL RCPD, RLSTT, RLVTT, RLMLT, RVTMP2, RTT, RD, RG
9  !$OMP THREADPRIVATE(RCPD, RLSTT, RLVTT, RLMLT, RVTMP2, RTT, RD, RG)
10
11  REAL, SAVE :: seuil_neb=0.001                 ! cloud fraction threshold: a cloud really exists when exceeded
12  !$OMP THREADPRIVATE(seuil_neb)
13
14  INTEGER, SAVE :: niter_lscp=5                 ! number of iterations to calculate autoconversion to precipitation
15  !$OMP THREADPRIVATE(niter_lscp)
16
17  INTEGER,SAVE :: iflag_evap_prec=1             ! precipitation evaporation flag. 0: nothing, 1: "old way",
18                                                ! 2: Max cloud fraction above to calculate the max of reevaporation
19                                                ! >=4: LTP'method i.e. evaporation in the clear-sky fraction of the mesh only
20                                                ! pay attention that iflag_evap_prec=4 may lead to unrealistic and overestimated
21                                                ! evaporation. Use 5 instead
22  !$OMP THREADPRIVATE(iflag_evap_prec)
23
24  REAL t_coup                                   ! temperature threshold which determines the phase
25  PARAMETER (t_coup=234.0)                      ! for which the saturation vapor pressure is calculated
26
27  REAL DDT0                                     ! iteration parameter
28  PARAMETER (DDT0=.01)
29
30  REAL ztfondue                                 ! parameter to calculate melting fraction of precipitation
31  PARAMETER (ztfondue=278.15)
32
33  REAL, SAVE    :: rain_int_min=0.001           ! Minimum local rain intensity [mm/s] before the decrease in associated precipitation fraction
34  !$OMP THREADPRIVATE(rain_int_min)
35
36  REAL, SAVE :: a_tr_sca(4)                     ! Variables for tracers temporary: alpha parameter for scavenging, 4 possible scavenging processes
37  !$OMP THREADPRIVATE(a_tr_sca)
38 
39  INTEGER, SAVE ::  iflag_mpc_bl=0              ! flag to activate boundary layer mixed phase cloud param
40  !$OMP THREADPRIVATE(iflag_mpc_bl)
41 
42  LOGICAL, SAVE :: ok_radocond_snow=.false.       ! take into account the mass of ice precip in the cloud ice content seen by radiation
43  !$OMP THREADPRIVATE(ok_radocond_snow)
44
45  REAL, SAVE :: t_glace_min=258.0                ! lower-bound temperature parameter for cloud phase determination
46  !$OMP THREADPRIVATE(t_glace_min)
47
48  REAL, SAVE :: t_glace_max=273.15               ! upper-bound temperature parameter for cloud phase determination
49  !$OMP THREADPRIVATE(t_glace_max)
50
51  REAL, SAVE :: exposant_glace=1.0               ! parameter for cloud phase determination
52  !$OMP THREADPRIVATE(exposant_glace)
53
54  INTEGER, SAVE :: iflag_vice=0                  ! which expression for ice crystall fall velocity
55  !$OMP THREADPRIVATE(iflag_vice)
56
57  INTEGER, SAVE :: iflag_t_glace=0               ! which expression for cloud phase partitioning
58  !$OMP THREADPRIVATE(iflag_t_glace)
59
60  INTEGER, SAVE :: iflag_cloudth_vert=0          ! option for determining cloud fraction and content in convective boundary layers
61  !$OMP THREADPRIVATE(iflag_cloudth_vert)
62
63  INTEGER, SAVE :: iflag_gammasat=0              ! which threshold for homogeneous nucleation below -40oC
64  !$OMP THREADPRIVATE(iflag_gammasat)
65
66  INTEGER, SAVE :: iflag_rain_incloud_vol=0      ! use of volume cloud fraction for rain autoconversion
67  !$OMP THREADPRIVATE(iflag_rain_incloud_vol)
68
69  INTEGER, SAVE :: iflag_bergeron=0              ! bergeron effect for liquid precipitation treatment 
70  !$OMP THREADPRIVATE(iflag_bergeron)
71
72  INTEGER, SAVE :: iflag_fisrtilp_qsat=0         ! qsat adjustment (iterative) during autoconversion
73  !$OMP THREADPRIVATE(iflag_fisrtilp_qsat)
74
75  INTEGER, SAVE :: iflag_pdf=0                   ! type of subgrid scale qtot pdf
76  !$OMP THREADPRIVATE(iflag_pdf)
77
78  INTEGER, SAVE :: iflag_autoconversion=0        ! autoconversion option
79  !$OMP THREADPRIVATE(iflag_autoconversion)
80
81  LOGICAL, SAVE :: reevap_ice=.false.            ! no liquid precip for T< threshold
82  !$OMP THREADPRIVATE(reevap_ice)
83
84  REAL, SAVE :: cld_lc_lsc=2.6e-4                ! liquid autoconversion coefficient, stratiform rain
85  !$OMP THREADPRIVATE(cld_lc_lsc)
86
87  REAL, SAVE :: cld_lc_con=2.6e-4                ! liquid autoconversion coefficient, convective rain
88  !$OMP THREADPRIVATE(cld_lc_con)
89
90  REAL, SAVE :: cld_tau_lsc=3600.                ! liquid autoconversion timescale, stratiform rain
91  !$OMP THREADPRIVATE(cld_tau_lsc)
92
93  REAL, SAVE :: cld_tau_con=3600.                ! liquid autoconversion timescale, convective rain
94  !$OMP THREADPRIVATE(cld_tau_con)
95
96  REAL, SAVE :: cld_expo_lsc=2.                  ! liquid autoconversion threshold exponent, stratiform rain
97  !$OMP THREADPRIVATE(cld_expo_lsc)
98
99  REAL, SAVE :: cld_expo_con=2.                  ! liquid autoconversion threshold exponent, convective rain
100  !$OMP THREADPRIVATE(cld_expo_con)
101
102  REAL, SAVE :: ffallv_lsc=1.                    ! tuning coefficient crystal fall velocity, stratiform
103  !$OMP THREADPRIVATE(ffallv_lsc)
104
105  REAL, SAVE :: ffallv_con=1.                    ! tuning coefficient crystal fall velocity, convective
106  !$OMP THREADPRIVATE(ffallv_con)
107
108  REAL, SAVE :: coef_eva=2e-5                    ! tuning coefficient liquid precip evaporation
109  !$OMP THREADPRIVATE(coef_eva)
110
111  REAL, SAVE :: coef_eva_i                       ! tuning coefficient ice precip sublimation
112  !$OMP THREADPRIVATE(coef_eva_i)
113
114  REAL cice_velo                                 ! factor in the ice fall velocity formulation
115  PARAMETER (cice_velo=1.645)
116
117  REAL dice_velo                                 ! exponent in the ice fall velocity formulation
118  PARAMETER (dice_velo=0.16)
119
120  REAL, SAVE :: dist_liq=300.                    ! typical deph of cloud-top liquid layer in mpcs
121  !$OMP THREADPRIVATE(dist_liq)
122
123  REAL, SAVE    :: tresh_cl=0.0                  ! cloud fraction threshold for cloud top search
124  !$OMP THREADPRIVATE(tresh_cl)
125
126CONTAINS
127
128SUBROUTINE lscp_ini(dtime,ok_ice_sursat, RCPD_in, RLSTT_in, RLVTT_in, RLMLT_in, &
129                    RVTMP2_in, RTT_in,RD_in,RG_in)
130
131
132   USE ioipsl_getin_p_mod, ONLY : getin_p
133   USE print_control_mod, ONLY: prt_level, lunout
134   USE ice_sursat_mod, ONLY: ice_sursat_init
135
136   REAL, INTENT(IN)      :: dtime
137   LOGICAL, INTENT(IN)   :: ok_ice_sursat 
138
139   REAL, INTENT(IN)      :: RCPD_in, RLSTT_in, RLVTT_in, RLMLT_in
140   REAL, INTENT(IN)      ::  RVTMP2_in, RTT_in, RD_in, RG_in
141   character (len=20) :: modname='lscp_ini_mod'
142   character (len=80) :: abort_message
143
144
145    RG=RG_in
146    RD=RD_in
147    RCPD=RCPD_in
148    RLVTT=RLVTT_in
149    RLSTT=RLSTT_in
150    RLMLT=RLMLT_in
151    RTT=RTT_in
152    RG=RG_in
153    RVTMP2=RVTMP2_in
154
155
156
157    CALL getin_p('niter_lscp',niter_lscp)
158    CALL getin_p('iflag_evap_prec',iflag_evap_prec)
159    CALL getin_p('seuil_neb',seuil_neb)
160    CALL getin_p('rain_int_min',rain_int_min)
161    CALL getin_p('iflag_mpc_bl',iflag_mpc_bl)
162    CALL getin_p('ok_radocond_snow',ok_radocond_snow)
163    CALL getin_p('t_glace_max',t_glace_max)
164    CALL getin_p('t_glace_min',t_glace_min)
165    CALL getin_p('exposant_glace',exposant_glace)
166    CALL getin_p('iflag_vice',iflag_vice)
167    CALL getin_p('iflag_t_glace',iflag_t_glace)
168    CALL getin_p('iflag_cloudth_vert',iflag_cloudth_vert)
169    CALL getin_p('iflag_gammasat',iflag_gammasat)
170    CALL getin_p('iflag_rain_incloud_vol',iflag_rain_incloud_vol)
171    CALL getin_p('iflag_bergeron',iflag_bergeron)
172    CALL getin_p('iflag_fisrtilp_qsat',iflag_fisrtilp_qsat)
173    CALL getin_p('iflag_pdf',iflag_pdf)
174    CALL getin_p('reevap_ice',reevap_ice)
175    CALL getin_p('cld_lc_lsc',cld_lc_lsc)
176    CALL getin_p('cld_lc_con',cld_lc_con)
177    CALL getin_p('cld_tau_lsc',cld_tau_lsc)
178    CALL getin_p('cld_tau_con',cld_tau_con)
179    CALL getin_p('cld_expo_lsc',cld_expo_lsc)
180    CALL getin_p('cld_expo_con',cld_expo_con)
181    CALL getin_p('ffallv_lsc',ffallv_lsc)
182    CALL getin_p('ffallv_lsc',ffallv_con)
183    CALL getin_p('coef_eva',coef_eva)
184    coef_eva_i=coef_eva
185    CALL getin_p('coef_eva_i',coef_eva_i)
186    CALL getin_p('iflag_autoconversion',iflag_autoconversion)
187    CALL getin_p('dist_liq',dist_liq)
188    CALL getin_p('tresh_cl',tresh_cl)
189
190
191
192
193    WRITE(lunout,*) 'lscp, niter_lscp:', niter_lscp
194    WRITE(lunout,*) 'lscp, iflag_evap_prec:', iflag_evap_prec
195    WRITE(lunout,*) 'lscp, seuil_neb:', seuil_neb
196    WRITE(lunout,*) 'lscp, rain_int_min:', rain_int_min
197    WRITE(lunout,*) 'lscp, iflag_mpc_bl:', iflag_mpc_bl
198    WRITE(lunout,*) 'lscp, ok_radocond_snow:', ok_radocond_snow
199    WRITE(lunout,*) 'lscp, t_glace_max:', t_glace_max
200    WRITE(lunout,*) 'lscp, t_glace_min:', t_glace_min
201    WRITE(lunout,*) 'lscp, exposant_glace:', exposant_glace
202    WRITE(lunout,*) 'lscp, iflag_vice:', iflag_vice
203    WRITE(lunout,*) 'lscp, iflag_t_glace:', iflag_t_glace
204    WRITE(lunout,*) 'lscp, iflag_cloudth_vert:', iflag_cloudth_vert
205    WRITE(lunout,*) 'lscp, iflag_gammasat:', iflag_gammasat
206    WRITE(lunout,*) 'lscp, iflag_rain_incloud_vol:', iflag_rain_incloud_vol
207    WRITE(lunout,*) 'lscp, iflag_bergeron:', iflag_bergeron
208    WRITE(lunout,*) 'lscp, iflag_fisrtilp_qsat:', iflag_fisrtilp_qsat
209    WRITE(lunout,*) 'lscp, iflag_pdf', iflag_pdf
210    WRITE(lunout,*) 'lscp, reevap_ice', reevap_ice
211    WRITE(lunout,*) 'lscp, cld_lc_lsc', cld_lc_lsc
212    WRITE(lunout,*) 'lscp, cld_lc_con', cld_lc_con
213    WRITE(lunout,*) 'lscp, cld_tau_lsc', cld_tau_lsc
214    WRITE(lunout,*) 'lscp, cld_tau_con', cld_tau_con
215    WRITE(lunout,*) 'lscp, cld_expo_lsc', cld_expo_lsc
216    WRITE(lunout,*) 'lscp, cld_expo_con', cld_expo_con
217    WRITE(lunout,*) 'lscp, ffallv_lsc', ffallv_lsc
218    WRITE(lunout,*) 'lscp, ffallv_con', ffallv_con
219    WRITE(lunout,*) 'lscp, coef_eva', coef_eva
220    WRITE(lunout,*) 'lscp, coef_eva_i', coef_eva_i
221    WRITE(lunout,*) 'lscp, iflag_autoconversion', iflag_autoconversion
222    WRITE(lunout,*) 'lscp, dist_liq', dist_liq
223    WRITE(lunout,*) 'lscp, tresh_cl', tresh_cl
224
225
226
227
228
229    ! check for precipitation sub-time steps
230    IF (ABS(dtime/REAL(niter_lscp)-360.0).GT.0.001) THEN
231        WRITE(lunout,*) 'lscp: it is not expected, see Z.X.Li', dtime
232        WRITE(lunout,*) 'I would prefer a 6 min sub-timestep'
233    ENDIF
234
235    ! check consistency between numerical resolution of autoconversion
236    ! and other options
237   
238    IF (iflag_autoconversion .EQ. 2) THEN
239        IF ((iflag_vice .NE. 0) .OR. (niter_lscp .GT. 1)) THEN
240           abort_message = 'in lscp, iflag_autoconversion=2 requires iflag_vice=0 and niter_lscp=1'
241           CALL abort_physic (modname,abort_message,1)
242        ENDIF
243    ENDIF
244
245
246    !AA Temporary initialisation
247    a_tr_sca(1) = -0.5
248    a_tr_sca(2) = -0.5
249    a_tr_sca(3) = -0.5
250    a_tr_sca(4) = -0.5
251   
252    IF (ok_ice_sursat) CALL ice_sursat_init()
253
254
255
256end subroutine lscp_ini
257
258end module lscp_ini_mod
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