source: LMDZ6/trunk/libf/phylmd/rrtm/readaerosolstrato1_rrtm.F90 @ 5435

Last change on this file since 5435 was 5084, checked in by Laurent Fairhead, 5 months ago

Reverting to r4065. Updating fortran standard broke too much stuff. Will do it by smaller chunks
AB, LF

File size: 10.2 KB
Line 
1!
2! $Id: readaerosolstrato1_rrtm.F90 2526 2016-05-26 22:13:40Z oboucher $
3!
4
5SUBROUTINE readaerosolstrato1_rrtm(debut)
6
7    USE netcdf95, ONLY: nf95_close, nf95_gw_var, nf95_inq_dimid, &
8                        nf95_inq_varid, nf95_open
9    USE netcdf, ONLY: nf90_get_var, nf90_noerr, nf90_nowrite
10
11    USE phys_cal_mod, ONLY : mth_cur
12    USE mod_grid_phy_lmdz, ONLY: nbp_lon, nbp_lat, klon_glo, grid2dTo1d_glo, grid_type, unstructured
13    USE mod_phys_lmdz_para
14    USE phys_state_var_mod
15    USE phys_local_var_mod
16    USE aero_mod
17    USE dimphy
18    USE YOERAD, ONLY : NLW
19    USE YOMCST
20    USE lmdz_xios
21
22    IMPLICIT NONE
23
24! Variable input
25    LOGICAL debut
26
27! Variables locales
28    INTEGER n_lat   ! number of latitudes in the input data
29    INTEGER n_lon   ! number of longitudes in the input data
30    INTEGER n_lev   ! number of levels in the input data
31    INTEGER n_month ! number of months in the input data
32    REAL, ALLOCATABLE:: latitude(:)
33    REAL, ALLOCATABLE:: longitude(:)
34    REAL, ALLOCATABLE:: time(:)
35    REAL, ALLOCATABLE:: lev(:)
36    INTEGER k, band, wave, i
37    INTEGER, SAVE :: mth_pre=1
38!$OMP THREADPRIVATE(mth_pre)
39
40    REAL, ALLOCATABLE, DIMENSION(:,:), SAVE :: tau_aer_strat
41!$OMP THREADPRIVATE(tau_aer_strat)
42
43! Champs reconstitues
44    REAL, ALLOCATABLE:: tauaerstrat(:, :, :, :)
45    REAL, ALLOCATABLE:: tauaerstrat_mois(:, :, :)
46    REAL, ALLOCATABLE:: tauaerstrat_mois_glo(:, :)
47    REAL, ALLOCATABLE:: tauaerstrat_mpi(:, :)
48
49! For NetCDF:
50    INTEGER ncid_in  ! IDs for input files
51    INTEGER varid, ncerr
52
53! Stratospheric aerosols optical properties
54! alpha_sw_strat over the 6 bands is normalised by the 550 nm extinction coefficient
55    REAL, DIMENSION(nbands_sw_rrtm) :: alpha_sw_strat, piz_sw_strat, cg_sw_strat
56    DATA alpha_sw_strat/0.8545564, 0.8451642, 0.9821724, 0.8145110, 0.3073565, 7.7966176E-02/
57    DATA cg_sw_strat   /0.6997170, 0.6810035, 0.7403592, 0.7562674, 0.6676504, 0.3478689/
58    DATA piz_sw_strat  /0.9999998, 0.9999998, 1.000000000, 0.9999958, 0.9977155, 0.4510679/
59!
60!--diagnostics AOD in the SW
61! alpha_sw_strat_wave is *not* normalised by the 550 nm extinction coefficient
62    REAL, DIMENSION(nwave_sw) :: alpha_sw_strat_wave
63    DATA alpha_sw_strat_wave/3.708007,4.125824,4.136584,3.887478,3.507738/
64!
65!--diagnostics AOD in the LW at 10 um (not normalised by the 550 nm ext coefficient
66    REAL :: alpha_lw_strat_wave(nwave_lw)
67    DATA alpha_lw_strat_wave/0.2746812/
68!
69    REAL, DIMENSION(nbands_lw_rrtm) :: alpha_lw_abs_rrtm
70    DATA alpha_lw_abs_rrtm/   8.8340312E-02, 6.9856711E-02, 6.2652975E-02, 5.7188231E-02, &
71                              6.3157059E-02, 5.5072524E-02, 5.0571125E-02, 0.1349073, &   
72                              0.1381676, 9.6506312E-02, 5.1312990E-02, 2.4256418E-02, &
73                              2.7191756E-02, 3.3862915E-02, 1.6132960E-02, 1.4275438E-02/ ! calculated with Mie_SW_LW_RRTM_V2.4 (bimodal, corrected)
74                                                                                          ! for r_0=/0.13E-6, 0.41E-6/ m, sigma_g=/1.26, 1.30/
75                                                                                          ! order: increasing wavelength!
76!--------------------------------------------------------
77
78    IF (.not.ALLOCATED(tau_aer_strat)) ALLOCATE(tau_aer_strat(klon,klev))
79
80!--we only read monthly strat aerosol data
81    IF (debut.OR.mth_cur.NE.mth_pre) THEN
82
83!--only root reads the data
84    IF (is_mpi_root.AND.is_omp_root) THEN
85
86    IF (nbands_sw_rrtm.NE.6) THEN
87        print *,'nbands_sw_rrtm doit etre egal a 6 dans readaerosolstrat_rrtm'
88        STOP
89    ENDIF
90
91    CALL nf95_open("taustrat.nc", nf90_nowrite, ncid_in)
92
93    CALL nf95_inq_varid(ncid_in, "LEV", varid)
94    CALL nf95_gw_var(ncid_in, varid, lev)
95    n_lev = size(lev)
96    IF (n_lev.NE.klev) THEN
97       print *,'Le nombre de niveaux n est pas egal a klev'
98       STOP
99    ENDIF
100
101    CALL nf95_inq_varid(ncid_in, "LAT", varid)
102    CALL nf95_gw_var(ncid_in, varid, latitude)
103    n_lat = size(latitude)
104    print *, 'LAT aerosol strato=', n_lat, latitude
105
106    IF (grid_type/=unstructured) THEN
107      IF (n_lat.NE.nbp_lat) THEN
108         print *,'Le nombre de lat n est pas egal a nbp_lat'
109         STOP
110      ENDIF
111    ENDIF
112   
113    CALL nf95_inq_varid(ncid_in, "LON", varid)
114    CALL nf95_gw_var(ncid_in, varid, longitude)
115    n_lon = size(longitude)
116    print *, 'LON aerosol strato=', n_lon, longitude
117
118    IF (grid_type/=unstructured) THEN
119      IF (n_lon.NE.nbp_lon) THEN
120         print *,'Le nombre de lon n est pas egal a nbp_lon'
121         STOP
122      ENDIF
123    ENDIF
124   
125   
126    CALL nf95_inq_varid(ncid_in, "TIME", varid)
127    CALL nf95_gw_var(ncid_in, varid, time)
128    n_month = size(time)
129    print *, 'TIME aerosol strato=', n_month, time
130    IF (n_month.NE.12) THEN
131       print *,'Le nombre de month n est pas egal a 12'
132       STOP
133    ENDIF
134
135    ALLOCATE(tauaerstrat(n_lon, n_lat, n_lev, n_month))
136    ALLOCATE(tauaerstrat_mois(n_lon, n_lat, n_lev))
137    ALLOCATE(tauaerstrat_mois_glo(klon_glo, n_lev))
138
139!--reading stratospheric AOD at 550 nm
140    CALL nf95_inq_varid(ncid_in, "TAUSTRAT", varid)
141    ncerr = nf90_get_var(ncid_in, varid, tauaerstrat)
142    print *,'code erreur readaerosolstrato=', ncerr, varid
143
144    CALL nf95_close(ncid_in)
145
146!---select the correct month
147    IF (mth_cur.LT.1.OR.mth_cur.GT.12) THEN
148      print *,'probleme avec le mois dans readaerosolstrat =', mth_cur
149    ENDIF
150    tauaerstrat_mois(:,:,:) = tauaerstrat(:,:,:,mth_cur)
151
152!---reduce to a klon_glo grid
153    CALL grid2dTo1d_glo(tauaerstrat_mois,tauaerstrat_mois_glo)
154   
155    ELSE
156      ALLOCATE(tauaerstrat_mois(0,0,0))
157    ENDIF !--is_mpi_root and is_omp_root
158
159!$OMP BARRIER
160
161!--keep memory of previous month
162    mth_pre=mth_cur
163
164!--scatter on all proc
165   
166    IF (grid_type==unstructured) THEN
167      IF (is_omp_master) THEN
168        ALLOCATE(tauaerstrat_mpi(klon_mpi,klev))
169        CALL xios_send_field("taustrat_in",tauaerstrat_mois)
170        CALL xios_recv_field("taustrat_out",tauaerstrat_mpi)
171      ELSE
172        ALLOCATE(tauaerstrat_mpi(0,0))
173      ENDIF
174      CALL scatter_omp(tauaerstrat_mpi,tau_aer_strat)
175    ELSE 
176      CALL scatter(tauaerstrat_mois_glo,tau_aer_strat)
177    ENDIF
178   
179    IF (is_mpi_root.AND.is_omp_root) THEN
180!
181    DEALLOCATE(tauaerstrat)
182    DEALLOCATE(tauaerstrat_mois)
183    DEALLOCATE(tauaerstrat_mois_glo)
184!
185    ENDIF !--is_mpi_root and is_omp_root
186
187!$OMP BARRIER
188
189    ENDIF !--debut ou nouveau mois
190
191!--total vertical aod at the 5 SW wavelengths
192    DO wave=1, nwave_sw
193    DO k=1, klev
194      tausum_aero(:,wave,id_STRAT_phy)=tausum_aero(:,wave,id_STRAT_phy)+ &
195          tau_aer_strat(:,k)*alpha_sw_strat_wave(wave)/alpha_sw_strat_wave(2)
196    ENDDO
197    ENDDO
198
199!--weighted average for cg, piz and tau, adding strat aerosols on top of tropospheric ones
200    DO band=1, nbands_sw_rrtm
201!--anthropogenic aerosols bands 1 to nbands_sw_rrtm
202    cg_aero_sw_rrtm(:,:,2,band)  = ( cg_aero_sw_rrtm(:,:,2,band)*piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) + &
203                                  cg_sw_strat(band)*piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /           &
204                             MAX( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) +                                &
205                                  piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:), 1.e-15 )
206    piz_aero_sw_rrtm(:,:,2,band)  = ( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) +                            &
207                              piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /                                 &
208                              MAX( tau_aero_sw_rrtm(:,:,2,band) + alpha_sw_strat(band)*tau_aer_strat(:,:), 1.e-15 )
209    tau_aero_sw_rrtm(:,:,2,band)  = tau_aero_sw_rrtm(:,:,2,band) + alpha_sw_strat(band)*tau_aer_strat(:,:)
210!--natural aerosols bands 1 to nbands_sw_rrtm
211    cg_aero_sw_rrtm(:,:,1,band)  = ( cg_aero_sw_rrtm(:,:,1,band)*piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) + &
212                             cg_sw_strat(band)*piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /                &
213                             MAX( piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) +                                &
214                                  piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:), 1.e-15 )
215    piz_aero_sw_rrtm(:,:,1,band)  = ( piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) +                            &
216                              piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /                                 &
217                              MAX( tau_aero_sw_rrtm(:,:,1,band) + alpha_sw_strat(band)*tau_aer_strat(:,:),1.e-15 )
218    tau_aero_sw_rrtm(:,:,1,band)  = tau_aero_sw_rrtm(:,:,1,band) + alpha_sw_strat(band)*tau_aer_strat(:,:)
219!--no stratospheric aerosol in index 1 for these tests
220!    cg_aero_sw_rrtm(:,:,1,band)  =  cg_aero_sw_rrtm(:,:,1,band)
221!    piz_aero_sw_rrtm(:,:,1,band)  = piz_aero_sw_rrtm(:,:,1,band)
222!    tau_aero_sw_rrtm(:,:,1,band)  = tau_aero_sw_rrtm(:,:,1,band)
223    ENDDO
224
225!--stratospheric AOD in LW
226    IF (nbands_lw_rrtm .NE. NLW) then
227      print*, 'different values for NLW (=',NLW,') and nbands_lw_rrtm (=', nbands_lw_rrtm, ')'
228      STOP
229    ENDIF
230
231!--total vertical aod at the 1 LW wavelength
232    DO wave=1, nwave_lw
233    DO k=1, klev
234      tausum_aero(:,nwave_sw+wave,id_STRAT_phy)=tausum_aero(:,nwave_sw+wave,id_STRAT_phy)+ &
235         tau_aer_strat(:,k)*alpha_lw_strat_wave(wave)/alpha_sw_strat_wave(2)
236    ENDDO
237    ENDDO
238
239    DO band=1, nbands_lw_rrtm
240    tau_aero_lw_rrtm(:,:,2,band)  = tau_aero_lw_rrtm(:,:,2,band) + alpha_lw_abs_rrtm(band)*tau_aer_strat(:,:)
241    tau_aero_lw_rrtm(:,:,1,band)  = tau_aero_lw_rrtm(:,:,1,band) + alpha_lw_abs_rrtm(band)*tau_aer_strat(:,:)
242!--no stratospheric aerosols in index 1 for these tests
243!    tau_aero_lw_rrtm(:,:,1,band)  = tau_aero_lw_rrtm(:,:,1,band)
244    ENDDO
245
246!--default SSA value if there is no aerosol
247!--to avoid 0 values that seems to cause some problem to RRTM
248    WHERE (tau_aero_sw_rrtm.LT.1.e-14)
249      piz_aero_sw_rrtm = 1.0
250    ENDWHERE
251
252!--in principle this should not be necessary
253!--as these variables have min values already but just in case
254!--put 1e-15 min value to both SW and LW AOD
255    tau_aero_sw_rrtm = MAX(tau_aero_sw_rrtm,1.e-15)
256    tau_aero_lw_rrtm = MAX(tau_aero_lw_rrtm,1.e-15)
257
258END SUBROUTINE readaerosolstrato1_rrtm
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