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readaerosolstrato2_rrtm.F90 @ 4619

Last change on this file since 4619 was 4619, checked in by yann meurdesoif, 12 months ago

Suppress usage of preprocessing key CPP_XIOS.
Wrapper file is used to suppress XIOS symbol when xios is not linked and not used (-io ioipsl)
The CPP_XIOS key is replaced in model by "using_xios" boolean variable to switch between IOIPSL or XIOS output.

File size: 17.4 KB

Line
1	!
2	! $Id: readaerosolstrato2_rrtm.F90 2526 2016-05-26 22:13:40Z oboucher $
3	!
4	SUBROUTINE readaerosolstrato2_rrtm(debut, ok_volcan)
5
6	USE netcdf95, ONLY: nf95_close, nf95_gw_var, nf95_inq_dimid, &
7	nf95_inq_varid, nf95_open
8	USE netcdf, ONLY: nf90_get_var, nf90_noerr, nf90_nowrite
9
10	USE phys_cal_mod, ONLY : mth_cur
11	USE mod_grid_phy_lmdz, ONLY: nbp_lon, nbp_lat, klon_glo, grid2dTo1d_glo, grid_type, unstructured
12	USE mod_phys_lmdz_mpi_data
13	USE mod_phys_lmdz_omp_data
14	USE mod_phys_lmdz_para
15	USE phys_state_var_mod
16	USE phys_local_var_mod
17	USE aero_mod
18	USE dimphy
19	USE YOERAD, ONLY : NLW
20	USE YOMCST
21	USE lmdz_xios
22
23	IMPLICIT NONE
24
25	INCLUDE "clesphys.h"
26
27	CHARACTER (len = 80) :: abort_message
28	CHARACTER (LEN=20) :: modname = 'readaerosolstrato2'
29
30	! Variable input
31	LOGICAL, INTENT(IN) :: debut
32	LOGICAL, INTENT(IN) :: ok_volcan !activate volcanic diags
33
34	! Variables locales
35	INTEGER n_lat ! number of latitudes in the input data
36	INTEGER n_lon ! number of longitudes
37	INTEGER n_lev ! number of levels in the input data
38	INTEGER n_month ! number of months in the input data
39	INTEGER n_wav ! number of wavelengths in the input data
40	REAL, ALLOCATABLE:: latitude(:)
41	REAL, ALLOCATABLE:: time(:)
42	REAL, ALLOCATABLE:: lev(:)
43	REAL, ALLOCATABLE:: wav(:)
44	INTEGER i,k,wave,band
45	INTEGER, SAVE :: mth_pre=1
46	!$OMP THREADPRIVATE(mth_pre)
47
48	REAL, ALLOCATABLE, DIMENSION(:,:,:), SAVE :: tau_aer_strat
49	REAL, ALLOCATABLE, DIMENSION(:,:,:), SAVE :: piz_aer_strat
50	REAL, ALLOCATABLE, DIMENSION(:,:,:), SAVE :: cg_aer_strat
51	REAL, ALLOCATABLE, DIMENSION(:,:,:), SAVE :: taulw_aer_strat
52	!$OMP THREADPRIVATE(tau_aer_strat,piz_aer_strat,cg_aer_strat,taulw_aer_strat)
53
54	! Champs reconstitues
55	REAL, ALLOCATABLE:: tauaerstrat(:, :, :, :)
56	REAL, ALLOCATABLE:: pizaerstrat(:, :, :, :)
57	REAL, ALLOCATABLE:: cgaerstrat(:, :, :, :)
58	REAL, ALLOCATABLE:: taulwaerstrat(:, :, :, :)
59
60	REAL, ALLOCATABLE:: tauaerstrat_mois(:, :, :, :)
61	REAL, ALLOCATABLE:: pizaerstrat_mois(:, :, :, :)
62	REAL, ALLOCATABLE:: cgaerstrat_mois(:, :, :, :)
63	REAL, ALLOCATABLE:: taulwaerstrat_mois(:, :, :, :)
64
65	REAL, ALLOCATABLE:: tauaerstrat_mois_glo(:, :, :)
66	REAL, ALLOCATABLE:: pizaerstrat_mois_glo(:, :, :)
67	REAL, ALLOCATABLE:: cgaerstrat_mois_glo(:, :, :)
68	REAL, ALLOCATABLE:: taulwaerstrat_mois_glo(:, :, :)
69	REAL, ALLOCATABLE:: tauaerstrat_mpi(:, :, :)
70	REAL, ALLOCATABLE:: pizaerstrat_mpi(:, :, :)
71	REAL, ALLOCATABLE:: cgaerstrat_mpi(:, :, :)
72	REAL, ALLOCATABLE:: taulwaerstrat_mpi(:, :, :)
73
74	! For NetCDF:
75	INTEGER ncid_in ! IDs for input files
76	INTEGER varid, ncerr
77
78	!--------------------------------------------------------
79
80	IF (.not.ALLOCATED(tau_aer_strat)) ALLOCATE(tau_aer_strat(klon,klev,NSW))
81	IF (.not.ALLOCATED(piz_aer_strat)) ALLOCATE(piz_aer_strat(klon,klev,NSW))
82	IF (.not.ALLOCATED(cg_aer_strat)) ALLOCATE(cg_aer_strat(klon,klev,NSW))
83
84	IF (.not.ALLOCATED(taulw_aer_strat)) ALLOCATE(taulw_aer_strat(klon,klev,NLW))
85
86	!--we only read monthly strat aerosol data
87	IF (debut.OR.mth_cur.NE.mth_pre) THEN
88
89	!--only root reads the data
90	IF (is_mpi_root.AND.is_omp_root) THEN
91
92	!--check mth_cur
93	IF (mth_cur.LT.1.OR.mth_cur.GT.12) THEN
94	print *,'probleme avec le mois dans readaerosolstrat =', mth_cur
95	ENDIF
96
97	!--initialize n_lon as input data is 2D (lat-alt) only
98	n_lon = nbp_lon
99
100	!--Starts with SW optical properties
101
102	CALL nf95_open("tauswstrat.2D.nc", nf90_nowrite, ncid_in)
103
104	CALL nf95_inq_varid(ncid_in, "LEV", varid)
105	CALL nf95_gw_var(ncid_in, varid, lev)
106	n_lev = size(lev)
107	IF (n_lev.NE.klev) THEN
108	abort_message='Le nombre de niveaux n est pas egal a klev'
109	CALL abort_physic(modname,abort_message,1)
110	ENDIF
111
112	CALL nf95_inq_varid(ncid_in, "LAT", varid)
113	CALL nf95_gw_var(ncid_in, varid, latitude)
114	n_lat = size(latitude)
115
116	IF (grid_type/=unstructured) THEN
117	IF (n_lat.NE.nbp_lat) THEN
118	print *, 'latitude=', n_lat, nbp_lat
119	abort_message='Le nombre de lat n est pas egal a nbp_lat'
120	CALL abort_physic(modname,abort_message,1)
121	ENDIF
122	ENDIF
123
124	CALL nf95_inq_varid(ncid_in, "TIME", varid)
125	CALL nf95_gw_var(ncid_in, varid, time)
126	n_month = size(time)
127	IF (n_month.NE.12) THEN
128	abort_message='Le nombre de month n est pas egal a 12'
129	CALL abort_physic(modname,abort_message,1)
130	ENDIF
131
132	CALL nf95_inq_varid(ncid_in, "WAV", varid)
133	CALL nf95_gw_var(ncid_in, varid, wav)
134	n_wav = size(wav)
135	print *, 'WAV aerosol strato=', n_wav, wav
136	IF (n_wav.NE.NSW) THEN
137	abort_message='Le nombre de wav n est pas egal a NSW'
138	CALL abort_physic(modname,abort_message,1)
139	ENDIF
140
141	ALLOCATE(tauaerstrat(n_lat, n_lev, n_wav, n_month))
142	ALLOCATE(pizaerstrat(n_lat, n_lev, n_wav, n_month))
143	ALLOCATE(cgaerstrat(n_lat, n_lev, n_wav, n_month))
144
145	!--reading stratospheric aerosol tau per layer
146	CALL nf95_inq_varid(ncid_in, "TAU_SUN", varid)
147	ncerr = nf90_get_var(ncid_in, varid, tauaerstrat)
148	print *,'code erreur readaerosolstrato=', ncerr, varid
149
150	!--reading stratospheric aerosol omega per layer
151	CALL nf95_inq_varid(ncid_in, "OME_SUN", varid)
152	ncerr = nf90_get_var(ncid_in, varid, pizaerstrat)
153	print *,'code erreur readaerosolstrato=', ncerr, varid
154
155	!--reading stratospheric aerosol g per layer
156	CALL nf95_inq_varid(ncid_in, "GGG_SUN", varid)
157	ncerr = nf90_get_var(ncid_in, varid, cgaerstrat)
158	print *,'code erreur readaerosolstrato sw=', ncerr, varid
159
160	CALL nf95_close(ncid_in)
161
162
163	IF (grid_type/=unstructured) THEN
164	ALLOCATE(tauaerstrat_mois(n_lon, n_lat, n_lev, n_wav))
165	ALLOCATE(pizaerstrat_mois(n_lon, n_lat, n_lev, n_wav))
166	ALLOCATE(cgaerstrat_mois(n_lon, n_lat, n_lev, n_wav))
167
168	ALLOCATE(tauaerstrat_mois_glo(klon_glo, n_lev, n_wav))
169	ALLOCATE(pizaerstrat_mois_glo(klon_glo, n_lev, n_wav))
170	ALLOCATE(cgaerstrat_mois_glo(klon_glo, n_lev, n_wav))
171	!--select the correct month
172	!--and copy into 1st longitude
173	tauaerstrat_mois(1,:,:,:) = tauaerstrat(:,:,:,mth_cur)
174	pizaerstrat_mois(1,:,:,:) = pizaerstrat(:,:,:,mth_cur)
175	cgaerstrat_mois(1,:,:,:) = cgaerstrat(:,:,:,mth_cur)
176
177	!--copy longitudes
178	DO i=2, n_lon
179	tauaerstrat_mois(i,:,:,:) = tauaerstrat_mois(1,:,:,:)
180	pizaerstrat_mois(i,:,:,:) = pizaerstrat_mois(1,:,:,:)
181	cgaerstrat_mois(i,:,:,:) = cgaerstrat_mois(1,:,:,:)
182	ENDDO
183
184	!---reduce to a klon_glo grid
185	DO band=1, NSW
186	CALL grid2dTo1d_glo(tauaerstrat_mois(:,:,:,band),tauaerstrat_mois_glo(:,:,band))
187	CALL grid2dTo1d_glo(pizaerstrat_mois(:,:,:,band),pizaerstrat_mois_glo(:,:,band))
188	CALL grid2dTo1d_glo(cgaerstrat_mois(:,:,:,band),cgaerstrat_mois_glo(:,:,band))
189	ENDDO
190	ENDIF
191	!--Now LW optical properties
192	!
193
194	CALL nf95_open("taulwstrat.2D.nc", nf90_nowrite, ncid_in)
195
196	CALL nf95_inq_varid(ncid_in, "LEV", varid)
197	CALL nf95_gw_var(ncid_in, varid, lev)
198	n_lev = size(lev)
199	IF (n_lev.NE.klev) THEN
200	abort_message='Le nombre de niveaux n est pas egal a klev'
201	CALL abort_physic(modname,abort_message,1)
202	ENDIF
203
204	CALL nf95_inq_varid(ncid_in, "LAT", varid)
205	CALL nf95_gw_var(ncid_in, varid, latitude)
206	n_lat = size(latitude)
207
208	IF (grid_type/=unstructured) THEN
209	IF (n_lat.NE.nbp_lat) THEN
210	abort_message='Le nombre de lat n est pas egal a nbp_lat'
211	CALL abort_physic(modname,abort_message,1)
212	ENDIF
213	ENDIF
214
215	CALL nf95_inq_varid(ncid_in, "TIME", varid)
216	CALL nf95_gw_var(ncid_in, varid, time)
217	n_month = size(time)
218	IF (n_month.NE.12) THEN
219	abort_message='Le nombre de month n est pas egal a 12'
220	CALL abort_physic(modname,abort_message,1)
221	ENDIF
222
223	CALL nf95_inq_varid(ncid_in, "WAV", varid)
224	CALL nf95_gw_var(ncid_in, varid, wav)
225	n_wav = size(wav)
226	print *, 'WAV aerosol strato=', n_wav, wav
227	IF (n_wav.NE.NLW) THEN
228	abort_message='Le nombre de wav n est pas egal a NLW'
229	CALL abort_physic(modname,abort_message,1)
230	ENDIF
231
232	ALLOCATE(taulwaerstrat(n_lat, n_lev, n_wav, n_month))
233
234	!--reading stratospheric aerosol lw tau per layer
235	CALL nf95_inq_varid(ncid_in, "TAU_EAR", varid)
236	ncerr = nf90_get_var(ncid_in, varid, taulwaerstrat)
237	print *,'code erreur readaerosolstrato lw=', ncerr, varid
238
239	CALL nf95_close(ncid_in)
240
241	IF (grid_type/=unstructured) THEN
242
243	ALLOCATE(taulwaerstrat_mois(n_lon, n_lat, n_lev, n_wav))
244	ALLOCATE(taulwaerstrat_mois_glo(klon_glo, n_lev, n_wav))
245
246	!--select the correct month
247	!--and copy into 1st longitude
248	taulwaerstrat_mois(1,:,:,:) = taulwaerstrat(:,:,:,mth_cur)
249	!--copy longitudes
250	DO i=2, n_lon
251	taulwaerstrat_mois(i,:,:,:) = taulwaerstrat_mois(1,:,:,:)
252	ENDDO
253
254	!---reduce to a klon_glo grid
255	DO band=1, NLW
256	CALL grid2dTo1d_glo(taulwaerstrat_mois(:,:,:,band),taulwaerstrat_mois_glo(:,:,band))
257	ENDDO
258	ENDIF
259
260	ELSE !--proc other than mpi_root and omp_root
261	!--dummy allocation needed for debug mode
262
263	ALLOCATE(tauaerstrat_mois_glo(1,1,1))
264	ALLOCATE(pizaerstrat_mois_glo(1,1,1))
265	ALLOCATE(cgaerstrat_mois_glo(1,1,1))
266	ALLOCATE(taulwaerstrat_mois_glo(1,1,1))
267
268	ALLOCATE(tauaerstrat(0,0,0,12))
269	ALLOCATE(pizaerstrat(0,0,0,12))
270	ALLOCATE(cgaerstrat(0,0,0,12))
271	ALLOCATE(taulwaerstrat(0,0,0,12))
272
273
274	ENDIF !--is_mpi_root and is_omp_root
275
276	!$OMP BARRIER
277
278	!--keep memory of previous month
279	mth_pre=mth_cur
280
281	IF (grid_type==unstructured) THEN
282
283	IF (is_omp_master) THEN
284	ALLOCATE(tauaerstrat_mpi(klon_mpi, klev, NSW))
285	ALLOCATE(pizaerstrat_mpi(klon_mpi, klev, NSW))
286	ALLOCATE(cgaerstrat_mpi(klon_mpi, klev, NSW))
287	ALLOCATE(taulwaerstrat_mpi(klon_mpi, klev, NLW))
288
289	CALL xios_send_field("tauaerstrat_in",SPREAD(tauaerstrat(:,:,:,mth_cur),1,8))
290	CALL xios_recv_field("tauaerstrat_out",tauaerstrat_mpi)
291	CALL xios_send_field("pizaerstrat_in",SPREAD(pizaerstrat(:,:,:,mth_cur),1,8))
292	CALL xios_recv_field("pizaerstrat_out",pizaerstrat_mpi)
293	CALL xios_send_field("cgaerstrat_in",SPREAD(cgaerstrat(:,:,:,mth_cur),1,8))
294	CALL xios_recv_field("cgaerstrat_out",cgaerstrat_mpi)
295	CALL xios_send_field("taulwaerstrat_in",SPREAD(taulwaerstrat(:,:,:,mth_cur),1,8))
296	CALL xios_recv_field("taulwaerstrat_out",taulwaerstrat_mpi)
297	ELSE
298	ALLOCATE(tauaerstrat_mpi(0, 0, 0))
299	ALLOCATE(pizaerstrat_mpi(0, 0, 0))
300	ALLOCATE(cgaerstrat_mpi(0, 0, 0))
301	ALLOCATE(taulwaerstrat_mpi(0, 0, 0))
302	ENDIF
303
304	CALL scatter_omp(tauaerstrat_mpi,tau_aer_strat)
305	CALL scatter_omp(pizaerstrat_mpi,piz_aer_strat)
306	CALL scatter_omp(cgaerstrat_mpi,cg_aer_strat)
307	CALL scatter_omp(taulwaerstrat_mpi,taulw_aer_strat)
308	ELSE
309
310	!--scatter on all proc
311	CALL scatter(tauaerstrat_mois_glo,tau_aer_strat)
312	CALL scatter(pizaerstrat_mois_glo,piz_aer_strat)
313	CALL scatter(cgaerstrat_mois_glo,cg_aer_strat)
314	CALL scatter(taulwaerstrat_mois_glo,taulw_aer_strat)
315	IF (is_mpi_root.AND.is_omp_root) DEALLOCATE(tauaerstrat_mois, pizaerstrat_mois, cgaerstrat_mois, taulwaerstrat_mois)
316
317	ENDIF
318
319	IF (is_mpi_root.AND.is_omp_root) THEN
320	DEALLOCATE(tauaerstrat, pizaerstrat, cgaerstrat,taulwaerstrat)
321	ENDIF
322
323
324	!$OMP BARRIER
325
326	ENDIF !--debut ou nouveau mois
327
328	!--total vertical aod at the 5 SW wavelengths
329	!--for now use band 3 AOD into all 5 wavelengths
330	!--it is only a reasonable approximation for 550 nm (wave=2)
331	band=3
332	DO i=1, klon
333	DO k=1, klev
334	IF (stratomask(i,k).GT.0.999999) THEN
335	DO wave=1, nwave_sw
336	tausum_aero(i,wave,id_STRAT_phy)=tausum_aero(i,wave,id_STRAT_phy)+tau_aer_strat(i,k,band)
337	ENDDO
338	ENDIF
339	ENDDO
340	ENDDO
341
342	IF (.NOT. ok_volcan) THEN
343	!
344	!--this is the default case
345	!--stratospheric aerosols are added to both index 2 and 1 for double radiation calls
346	!--weighted average for cg, piz and tau, adding strat aerosols on top of tropospheric ones
347	DO band=1, NSW
348	WHERE (stratomask.GT.0.999999)
349	!--strat aerosols are added to index 2 : natural and anthropogenic aerosols for bands 1 to NSW
350	cg_aero_sw_rrtm(:,:,2,band) = ( cg_aero_sw_rrtm(:,:,2,band)piz_aero_sw_rrtm(:,:,2,band)tau_aero_sw_rrtm(:,:,2,band) + &
351	cg_aer_strat(:,:,band)piz_aer_strat(:,:,band)tau_aer_strat(:,:,band) ) / &
352	MAX( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) + &
353	piz_aer_strat(:,:,band)*tau_aer_strat(:,:,band), 1.e-15 )
354	piz_aero_sw_rrtm(:,:,2,band) = ( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) + &
355	piz_aer_strat(:,:,band)*tau_aer_strat(:,:,band) ) / &
356	MAX( tau_aero_sw_rrtm(:,:,2,band) + tau_aer_strat(:,:,band), 1.e-15 )
357	tau_aero_sw_rrtm(:,:,2,band) = tau_aero_sw_rrtm(:,:,2,band) + tau_aer_strat(:,:,band)
358	!--strat aerosols are added to index 1 : natural aerosols only for bands 1 to NSW
359	cg_aero_sw_rrtm(:,:,1,band) = ( cg_aero_sw_rrtm(:,:,1,band)piz_aero_sw_rrtm(:,:,1,band)tau_aero_sw_rrtm(:,:,1,band) + &
360	cg_aer_strat(:,:,band)piz_aer_strat(:,:,band)tau_aer_strat(:,:,band) ) / &
361	MAX( piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) + &
362	piz_aer_strat(:,:,band)*tau_aer_strat(:,:,band), 1.e-15 )
363	piz_aero_sw_rrtm(:,:,1,band) = ( piz_aero_sw_rrtm(:,:,1,band)*tau_aero_sw_rrtm(:,:,1,band) + &
364	piz_aer_strat(:,:,band)*tau_aer_strat(:,:,band) ) / &
365	MAX( tau_aero_sw_rrtm(:,:,1,band) + tau_aer_strat(:,:,band), 1.e-15 )
366	tau_aero_sw_rrtm(:,:,1,band) = tau_aero_sw_rrtm(:,:,1,band) + tau_aer_strat(:,:,band)
367	ENDWHERE
368	ENDDO
369	!
370	ELSE
371	!
372	!--this is the VOLMIP case
373	!--stratospheric aerosols are only added to index 2 in this case
374	!--weighted average for cg, piz and tau, adding strat aerosols on top of tropospheric ones
375	DO band=1, NSW
376	WHERE (stratomask.GT.0.999999)
377	!--strat aerosols are added to index 2 : natural and anthropogenic aerosols for bands 1 to NSW
378	cg_aero_sw_rrtm(:,:,2,band) = ( cg_aero_sw_rrtm(:,:,2,band)piz_aero_sw_rrtm(:,:,2,band)tau_aero_sw_rrtm(:,:,2,band) + &
379	cg_aer_strat(:,:,band)piz_aer_strat(:,:,band)tau_aer_strat(:,:,band) ) / &
380	MAX( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) + &
381	piz_aer_strat(:,:,band)*tau_aer_strat(:,:,band), 1.e-15 )
382	piz_aero_sw_rrtm(:,:,2,band) = ( piz_aero_sw_rrtm(:,:,2,band)*tau_aero_sw_rrtm(:,:,2,band) + &
383	piz_aer_strat(:,:,band)*tau_aer_strat(:,:,band) ) / &
384	MAX( tau_aero_sw_rrtm(:,:,2,band) + tau_aer_strat(:,:,band), 1.e-15 )
385	tau_aero_sw_rrtm(:,:,2,band) = tau_aero_sw_rrtm(:,:,2,band) + tau_aer_strat(:,:,band)
386	ENDWHERE
387	ENDDO
388	ENDIF
389
390	!--total vertical aod at 10 um
391	!--this is approximated from band 7 of RRTM
392	band=7
393	DO i=1, klon
394	DO k=1, klev
395	IF (stratomask(i,k).GT.0.999999) THEN
396	DO wave=1, nwave_lw
397	tausum_aero(i,nwave_sw+wave,id_STRAT_phy)=tausum_aero(i,nwave_sw+wave,id_STRAT_phy)+taulw_aer_strat(i,k,band)
398	ENDDO
399	ENDIF
400	ENDDO
401	ENDDO
402
403	IF (.NOT. ok_volcan) THEN
404	!--this is the default case
405	!--stratospheric aerosols are added to both index 2 and 1
406	DO band=1, NLW
407	WHERE (stratomask.GT.0.999999)
408	tau_aero_lw_rrtm(:,:,2,band) = tau_aero_lw_rrtm(:,:,2,band) + taulw_aer_strat(:,:,band)
409	tau_aero_lw_rrtm(:,:,1,band) = tau_aero_lw_rrtm(:,:,1,band) + taulw_aer_strat(:,:,band)
410	ENDWHERE
411	ENDDO
412	!
413	ELSE
414	!
415	!--this is the VOLMIP case
416	DO band=1, NLW
417	!--stratospheric aerosols are not added to index 1
418	!--and we copy index 2 in index 1 because we want the same dust aerosol LW properties as above
419	tau_aero_lw_rrtm(:,:,1,band) = tau_aero_lw_rrtm(:,:,2,band)
420	!
421	WHERE (stratomask.GT.0.999999)
422	!--stratospheric aerosols are only added to index 2
423	tau_aero_lw_rrtm(:,:,2,band) = tau_aero_lw_rrtm(:,:,2,band) + taulw_aer_strat(:,:,band)
424	ENDWHERE
425	ENDDO
426	ENDIF
427
428	!--default SSA value if there is no aerosol
429	!--to avoid 0 values that seems to cause some problem to RRTM
430	WHERE (tau_aero_sw_rrtm.LT.1.e-14)
431	piz_aero_sw_rrtm = 1.0
432	ENDWHERE
433
434	!--in principle this should not be necessary
435	!--as these variables have min values already but just in case
436	!--put 1e-15 min value to both SW and LW AOD
437	tau_aero_sw_rrtm = MAX(tau_aero_sw_rrtm,1.e-15)
438	tau_aero_lw_rrtm = MAX(tau_aero_lw_rrtm,1.e-15)
439
440	END SUBROUTINE readaerosolstrato2_rrtm

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