source: LMDZ6/branches/LMDZ_cdrag_LSCE/libf/phylmd/rrtm/readaerosolstrato1_rrtm.F90 @ 5456

Last change on this file since 5456 was 4489, checked in by lguez, 21 months ago

Merge LMDZ_ECRad branch back into trunk!
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#ifdef CPP_XIOS
21    USE xios
22#endif
23
24    IMPLICIT NONE
25
26! Variable input
27    LOGICAL debut
28
29! Variables locales
30    INTEGER n_lat   ! number of latitudes in the input data
31    INTEGER n_lon   ! number of longitudes in the input data
32    INTEGER n_lev   ! number of levels in the input data
33    INTEGER n_month ! number of months in the input data
34    REAL, ALLOCATABLE:: latitude(:)
35    REAL, ALLOCATABLE:: longitude(:)
36    REAL, ALLOCATABLE:: time(:)
37    REAL, ALLOCATABLE:: lev(:)
38    INTEGER k, band, wave, i
39    INTEGER, SAVE :: mth_pre=1
40!$OMP THREADPRIVATE(mth_pre)
41
42    REAL, ALLOCATABLE, DIMENSION(:,:), SAVE :: tau_aer_strat
43!$OMP THREADPRIVATE(tau_aer_strat)
44
45! Champs reconstitues
46    REAL, ALLOCATABLE:: tauaerstrat(:, :, :, :)
47    REAL, ALLOCATABLE:: tauaerstrat_mois(:, :, :)
48    REAL, ALLOCATABLE:: tauaerstrat_mois_glo(:, :)
49    REAL, ALLOCATABLE:: tauaerstrat_mpi(:, :)
50
51! For NetCDF:
52    INTEGER ncid_in  ! IDs for input files
53    INTEGER varid, ncerr
54
55! Stratospheric aerosols optical properties
56! alpha_sw_strat over the 6 bands is normalised by the 550 nm extinction coefficient
57    REAL, DIMENSION(nbands_sw_rrtm) :: alpha_sw_strat, piz_sw_strat, cg_sw_strat
58    DATA alpha_sw_strat/0.8545564, 0.8451642, 0.9821724, 0.8145110, 0.3073565, 7.7966176E-02/
59    DATA cg_sw_strat   /0.6997170, 0.6810035, 0.7403592, 0.7562674, 0.6676504, 0.3478689/
60    DATA piz_sw_strat  /0.9999998, 0.9999998, 1.000000000, 0.9999958, 0.9977155, 0.4510679/
61!
62!--diagnostics AOD in the SW
63! alpha_sw_strat_wave is *not* normalised by the 550 nm extinction coefficient
64    REAL, DIMENSION(nwave_sw) :: alpha_sw_strat_wave
65    DATA alpha_sw_strat_wave/3.708007,4.125824,4.136584,3.887478,3.507738/
66!
67!--diagnostics AOD in the LW at 10 um (not normalised by the 550 nm ext coefficient
68    REAL :: alpha_lw_strat_wave(nwave_lw)
69    DATA alpha_lw_strat_wave/0.2746812/
70!
71    REAL, DIMENSION(nbands_lw_rrtm) :: alpha_lw_abs_rrtm
72    DATA alpha_lw_abs_rrtm/   8.8340312E-02, 6.9856711E-02, 6.2652975E-02, 5.7188231E-02, &
73                              6.3157059E-02, 5.5072524E-02, 5.0571125E-02, 0.1349073, &   
74                              0.1381676, 9.6506312E-02, 5.1312990E-02, 2.4256418E-02, &
75                              2.7191756E-02, 3.3862915E-02, 1.6132960E-02, 1.4275438E-02/ ! calculated with Mie_SW_LW_RRTM_V2.4 (bimodal, corrected)
76                                                                                          ! for r_0=/0.13E-6, 0.41E-6/ m, sigma_g=/1.26, 1.30/
77                                                                                          ! order: increasing wavelength!
78!--------------------------------------------------------
79
80    IF (.not.ALLOCATED(tau_aer_strat)) ALLOCATE(tau_aer_strat(klon,klev))
81
82!--we only read monthly strat aerosol data
83    IF (debut.OR.mth_cur.NE.mth_pre) THEN
84
85!--only root reads the data
86    IF (is_mpi_root.AND.is_omp_root) THEN
87
88    IF (nbands_sw_rrtm.NE.6) THEN
89        print *,'nbands_sw_rrtm doit etre egal a 6 dans readaerosolstrat_rrtm'
90        STOP
91    ENDIF
92
93    CALL nf95_open("taustrat.nc", nf90_nowrite, ncid_in)
94
95    CALL nf95_inq_varid(ncid_in, "LEV", varid)
96    CALL nf95_gw_var(ncid_in, varid, lev)
97    n_lev = size(lev)
98    IF (n_lev.NE.klev) THEN
99       print *,'Le nombre de niveaux n est pas egal a klev'
100       STOP
101    ENDIF
102
103    CALL nf95_inq_varid(ncid_in, "LAT", varid)
104    CALL nf95_gw_var(ncid_in, varid, latitude)
105    n_lat = size(latitude)
106    print *, 'LAT aerosol strato=', n_lat, latitude
107
108    IF (grid_type/=unstructured) THEN
109      IF (n_lat.NE.nbp_lat) THEN
110         print *,'Le nombre de lat n est pas egal a nbp_lat'
111         STOP
112      ENDIF
113    ENDIF
114   
115    CALL nf95_inq_varid(ncid_in, "LON", varid)
116    CALL nf95_gw_var(ncid_in, varid, longitude)
117    n_lon = size(longitude)
118    print *, 'LON aerosol strato=', n_lon, longitude
119
120    IF (grid_type/=unstructured) THEN
121      IF (n_lon.NE.nbp_lon) THEN
122         print *,'Le nombre de lon n est pas egal a nbp_lon'
123         STOP
124      ENDIF
125    ENDIF
126   
127   
128    CALL nf95_inq_varid(ncid_in, "TIME", varid)
129    CALL nf95_gw_var(ncid_in, varid, time)
130    n_month = size(time)
131    print *, 'TIME aerosol strato=', n_month, time
132    IF (n_month.NE.12) THEN
133       print *,'Le nombre de month n est pas egal a 12'
134       STOP
135    ENDIF
136
137    ALLOCATE(tauaerstrat(n_lon, n_lat, n_lev, n_month))
138    ALLOCATE(tauaerstrat_mois(n_lon, n_lat, n_lev))
139    ALLOCATE(tauaerstrat_mois_glo(klon_glo, n_lev))
140
141!--reading stratospheric AOD at 550 nm
142    CALL nf95_inq_varid(ncid_in, "TAUSTRAT", varid)
143    ncerr = nf90_get_var(ncid_in, varid, tauaerstrat)
144    print *,'code erreur readaerosolstrato=', ncerr, varid
145
146    CALL nf95_close(ncid_in)
147
148!---select the correct month
149    IF (mth_cur.LT.1.OR.mth_cur.GT.12) THEN
150      print *,'probleme avec le mois dans readaerosolstrat =', mth_cur
151    ENDIF
152    tauaerstrat_mois(:,:,:) = tauaerstrat(:,:,:,mth_cur)
153
154!---reduce to a klon_glo grid
155    CALL grid2dTo1d_glo(tauaerstrat_mois,tauaerstrat_mois_glo)
156   
157    ELSE
158      ALLOCATE(tauaerstrat_mois(0,0,0))
159    ENDIF !--is_mpi_root and is_omp_root
160
161!$OMP BARRIER
162
163!--keep memory of previous month
164    mth_pre=mth_cur
165
166!--scatter on all proc
167   
168    IF (grid_type==unstructured) THEN
169#ifdef CPP_XIOS
170      IF (is_omp_master) THEN
171        ALLOCATE(tauaerstrat_mpi(klon_mpi,klev))
172        CALL xios_send_field("taustrat_in",tauaerstrat_mois)
173        CALL xios_recv_field("taustrat_out",tauaerstrat_mpi)
174      ELSE
175        ALLOCATE(tauaerstrat_mpi(0,0))
176      ENDIF
177      CALL scatter_omp(tauaerstrat_mpi,tau_aer_strat)
178#endif
179    ELSE 
180      CALL scatter(tauaerstrat_mois_glo,tau_aer_strat)
181    ENDIF
182   
183    IF (is_mpi_root.AND.is_omp_root) THEN
184!
185    DEALLOCATE(tauaerstrat)
186    DEALLOCATE(tauaerstrat_mois)
187    DEALLOCATE(tauaerstrat_mois_glo)
188!
189    ENDIF !--is_mpi_root and is_omp_root
190
191!$OMP BARRIER
192
193    ENDIF !--debut ou nouveau mois
194
195!--total vertical aod at the 5 SW wavelengths
196    DO wave=1, nwave_sw
197    DO k=1, klev
198      tausum_aero(:,wave,id_STRAT_phy)=tausum_aero(:,wave,id_STRAT_phy)+ &
199          tau_aer_strat(:,k)*alpha_sw_strat_wave(wave)/alpha_sw_strat_wave(2)
200    ENDDO
201    ENDDO
202
203!--weighted average for cg, piz and tau, adding strat aerosols on top of tropospheric ones
204    DO band=1, nbands_sw_rrtm
205!--anthropogenic aerosols bands 1 to nbands_sw_rrtm
206    cg_aero_sw_rrtm(:,:,2,band)  = ( cg_aero_sw_rrtm(:,:,2,band)*piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) + &
207                                  cg_sw_strat(band)*piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /           &
208                             MAX( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) +                                &
209                                  piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:), 1.e-15 )
210    piz_aero_sw_rrtm(:,:,2,band)  = ( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) +                            &
211                              piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /                                 &
212                              MAX( tau_aero_sw_rrtm(:,:,2,band) + alpha_sw_strat(band)*tau_aer_strat(:,:), 1.e-15 )
213    tau_aero_sw_rrtm(:,:,2,band)  = tau_aero_sw_rrtm(:,:,2,band) + alpha_sw_strat(band)*tau_aer_strat(:,:)
214!--natural aerosols bands 1 to nbands_sw_rrtm
215    cg_aero_sw_rrtm(:,:,1,band)  = ( cg_aero_sw_rrtm(:,:,1,band)*piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) + &
216                             cg_sw_strat(band)*piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /                &
217                             MAX( piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) +                                &
218                                  piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:), 1.e-15 )
219    piz_aero_sw_rrtm(:,:,1,band)  = ( piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) +                            &
220                              piz_sw_strat(band)*alpha_sw_strat(band)*tau_aer_strat(:,:) ) /                                 &
221                              MAX( tau_aero_sw_rrtm(:,:,1,band) + alpha_sw_strat(band)*tau_aer_strat(:,:),1.e-15 )
222    tau_aero_sw_rrtm(:,:,1,band)  = tau_aero_sw_rrtm(:,:,1,band) + alpha_sw_strat(band)*tau_aer_strat(:,:)
223!--no stratospheric aerosol in index 1 for these tests
224!    cg_aero_sw_rrtm(:,:,1,band)  =  cg_aero_sw_rrtm(:,:,1,band)
225!    piz_aero_sw_rrtm(:,:,1,band)  = piz_aero_sw_rrtm(:,:,1,band)
226!    tau_aero_sw_rrtm(:,:,1,band)  = tau_aero_sw_rrtm(:,:,1,band)
227    ENDDO
228
229!--stratospheric AOD in LW
230    IF (nbands_lw_rrtm .NE. NLW) then
231      print*, 'different values for NLW (=',NLW,') and nbands_lw_rrtm (=', nbands_lw_rrtm, ')'
232      STOP
233    ENDIF
234
235!--total vertical aod at the 1 LW wavelength
236    DO wave=1, nwave_lw
237    DO k=1, klev
238      tausum_aero(:,nwave_sw+wave,id_STRAT_phy)=tausum_aero(:,nwave_sw+wave,id_STRAT_phy)+ &
239         tau_aer_strat(:,k)*alpha_lw_strat_wave(wave)/alpha_sw_strat_wave(2)
240    ENDDO
241    ENDDO
242
243    DO band=1, nbands_lw_rrtm
244    tau_aero_lw_rrtm(:,:,2,band)  = tau_aero_lw_rrtm(:,:,2,band) + alpha_lw_abs_rrtm(band)*tau_aer_strat(:,:)
245    tau_aero_lw_rrtm(:,:,1,band)  = tau_aero_lw_rrtm(:,:,1,band) + alpha_lw_abs_rrtm(band)*tau_aer_strat(:,:)
246!--no stratospheric aerosols in index 1 for these tests
247!    tau_aero_lw_rrtm(:,:,1,band)  = tau_aero_lw_rrtm(:,:,1,band)
248    ENDDO
249
250!--default SSA value if there is no aerosol
251!--to avoid 0 values that seems to cause some problem to RRTM
252    WHERE (tau_aero_sw_rrtm.LT.1.e-14)
253      piz_aero_sw_rrtm = 1.0
254    ENDWHERE
255
256!--in principle this should not be necessary
257!--as these variables have min values already but just in case
258!--put 1e-15 min value to both SW and LW AOD
259    tau_aero_sw_rrtm = MAX(tau_aero_sw_rrtm,1.e-15)
260    tau_aero_lw_rrtm = MAX(tau_aero_lw_rrtm,1.e-15)
261
262END SUBROUTINE readaerosolstrato1_rrtm
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