Context Navigation

optcv.F90 @ 3318

Last change on this file since 3318 was 3318, checked in by slebonnois, 7 months ago
Titan PCM update : optics + microphysics
Property svn:executable set to ``*
File size: 22.2 KB

Line
1	SUBROUTINE OPTCV(PQMO,NLAY,ZLEV,PLEV,TMID,PMID, &
2	DTAUV,TAUV,TAUCUMV,WBARV,COSBV,TAURAY,TAUGSURF,SEASHAZEFACT,&
3	DIAG_OPTH,DIAG_OPTT,CDCOLUMN)
4
5	use radinc_h
6	use radcommon_h, only: gasv,gasv_recomb,tlimit,Cmk,gzlat_ig, &
7	tgasref,pfgasref,wnov,scalep,indv
8	use gases_h
9	use datafile_mod, only: haze_opt_file
10	use comcstfi_mod, only: pi,r
11	use callkeys_mod, only: continuum,graybody,callgasvis,corrk_recombin, &
12	callclouds,callmufi,seashaze,uncoupl_optic_haze,&
13	opt4clouds,FHVIS,FCVIS
14	use tracer_h, only: nmicro,nice,ices_indx
15
16	implicit none
17
18	!==================================================================
19	!
20	! Purpose
21	! -------
22	! Calculates shortwave optical constants at each level.
23	!
24	! Authors
25	! -------
26	! Adapted from the NASA Ames code by R. Wordsworth (2009)
27	!
28	! Modified
29	! --------
30	! J. Vatant d'Ollone (2016-17)
31	! --> Clean and adaptation to Titan
32	! B. de Batz de Trenquelléon (2022-2023)
33	! --> Clean and correction to Titan
34	! --> New optics added for Titan's clouds
35	!
36	!==================================================================
37	!
38	! THIS SUBROUTINE SETS THE OPTICAL CONSTANTS IN THE VISUAL
39	! IT CALCULATES FOR EACH LAYER, FOR EACH SPECTRAL INTERVAL IN THE VISUAL
40	! LAYER: WBAR, DTAU, COSBAR
41	! LEVEL: TAU
42	!
43	! TAUV(L,NW,NG) is the cumulative optical depth at the top of radiation code
44	! layer L. NW is spectral wavelength interval, ng the Gauss point index.
45	!
46	! TLEV(L) - Temperature at the layer boundary
47	! PLEV(L) - Pressure at the layer boundary (i.e. level)
48	! GASV(NT,NPS,NW,NG) - Visible k-coefficients
49	!
50	!-------------------------------------------------------------------
51
52
53	!==========================================================
54	! Input/Output
55	!==========================================================
56	REAL*8, INTENT(IN) :: PQMO(nlay,nmicro) ! Tracers for microphysics optics (X/m2).
57	INTEGER, INTENT(IN) :: NLAY ! Number of pressure layers (for pqmo)
58	REAL*8, INTENT(IN) :: ZLEV(NLAY+1)
59	REAL*8, INTENT(IN) :: PLEV(L_LEVELS)
60	REAL*8, INTENT(IN) :: TMID(L_LEVELS), PMID(L_LEVELS)
61	REAL*8, INTENT(IN) :: TAURAY(L_NSPECTV)
62	REAL*8, INTENT(IN) :: SEASHAZEFACT(L_LEVELS)
63	INTEGER, INTENT(IN) :: CDCOLUMN
64
65	REAL*8, INTENT(OUT) :: DTAUV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
66	REAL*8, INTENT(OUT) :: TAUV(L_NLEVRAD,L_NSPECTV,L_NGAUSS)
67	REAL*8, INTENT(OUT) :: TAUCUMV(L_LEVELS,L_NSPECTV,L_NGAUSS)
68	REAL*8, INTENT(OUT) :: COSBV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
69	REAL*8, INTENT(OUT) :: WBARV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
70	REAL*8, INTENT(OUT) :: TAUGSURF(L_NSPECTV,L_NGAUSS-1)
71	REAL*8, INTENT(OUT) :: DIAG_OPTH(L_LEVELS,L_NSPECTV,6)
72	REAL*8, INTENT(OUT) :: DIAG_OPTT(L_LEVELS,L_NSPECTV,6)
73	! ==========================================================
74
75	real*8 DTAUKV(L_LEVELS,L_NSPECTV,L_NGAUSS)
76
77	! Titan customisation
78	! J. Vatant d'Ollone (2016)
79	real*8 DHAZE_T(L_LEVELS,L_NSPECTV)
80	real*8 DHAZES_T(L_LEVELS,L_NSPECTV)
81	real*8 SSA_T(L_LEVELS,L_NSPECTV)
82	real*8 ASF_T(L_LEVELS,L_NSPECTV)
83	! ==========================
84
85	integer L, NW, NG, K, LK, IAER
86	integer MT(L_LEVELS), MP(L_LEVELS), NP(L_LEVELS)
87	real*8 ANS, TAUGAS
88	real*8 TRAY(L_LEVELS,L_NSPECTV)
89	real*8 DPR(L_LEVELS), U(L_LEVELS)
90	real*8 LCOEF(4), LKCOEF(L_LEVELS,4)
91
92	real*8 DCONT
93	real*8 DRAYAER
94	double precision wn_cont, p_cont, p_air, T_cont, dtemp, dtempc
95	double precision p_cross
96
97	real*8 KCOEF(4)
98
99	! temporary variable to reduce memory access time to gasv
100	real*8 tmpk(2,2)
101
102	! temporary variables for multiple aerosol calculation
103	real*8 atemp(L_NLAYRAD,L_NSPECTV)
104	real*8 btemp(L_NLAYRAD,L_NSPECTV)
105	real*8 ctemp(L_NLAYRAD,L_NSPECTV)
106
107	! variables for k in units m^-1
108	real*8 dz(L_LEVELS)
109
110	integer igas, jgas, ilay
111
112	integer interm
113
114	! Variables for haze optics
115	character(len=200) file_path
116	logical file_ok
117	integer dumch
118	real*8 dumwvl
119
120	! Variables for new optics
121	integer iq, iw, FTYPE, CTYPE
122	real*8 m0as,m0af,m0ccn,m3as,m3af,m3ccn,m3cld
123	real*8 dtauaer_s,dtauaer_f,dtau_ccn,dtau_cld
124	real*8,save :: rhoaer_s(L_NSPECTV),ssa_s(L_NSPECTV),asf_s(L_NSPECTV)
125	real*8,save :: rhoaer_f(L_NSPECTV),ssa_f(L_NSPECTV),asf_f(L_NSPECTV)
126	real*8,save :: ssa_ccn(L_NSPECTV),asf_ccn(L_NSPECTV)
127	real*8,save :: ssa_cld(L_NSPECTV),asf_cld(L_NSPECTV)
128	!$OMP THREADPRIVATE(rhoaer_s,rhoaer_f,ssa_s,ssa_f,ssa_cld,asf_s,asf_f,asf_cld)
129
130	logical,save :: firstcall=.true.
131	!$OMP THREADPRIVATE(firstcall)
132
133
134	!! AS: to save time in computing continuum (see bilinearbig)
135	IF (.not.ALLOCATED(indv)) THEN
136	ALLOCATE(indv(L_NSPECTV,ngasmx,ngasmx))
137	indv = -9999 ! this initial value means "to be calculated"
138	ENDIF
139
140	! Some initialisation beacause there's a pb with disr_haze at the limits (nw=1)
141	! I should check this - For now we set vars to zero : better than nans - JVO 2017
142	DHAZE_T(:,:) = 0.0
143	SSA_T(:,:) = 0.0
144	ASF_T(:,:) = 0.0
145
146	! Load tabulated haze optical properties if needed.
147	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
148	IF (firstcall .AND. callmufi .AND. (.NOT. uncoupl_optic_haze)) THEN
149	OPEN(12,file=TRIM(haze_opt_file),form='formatted') ! The file has been inquired in physiq_mod firstcall
150	READ(12,*) ! dummy header
151	DO NW=1,L_NSPECTI
152	READ(12,*) ! there's IR 1st
153	ENDDO
154	DO NW=1,L_NSPECTV
155	READ(12,*) dumch, dumwvl, rhoaer_f(nw), ssa_f(nw), asf_f(nw), rhoaer_s(nw), ssa_s(nw), asf_s(nw)
156	ENDDO
157	CLOSE(12)
158	ENDIF
159
160	!=======================================================================
161	! Determine the total gas opacity throughout the column, for each
162	! spectral interval, NW, and each Gauss point, NG.
163	! Calculate the continuum opacities, i.e., those that do not depend on
164	! NG, the Gauss index.
165
166	taugsurf(:,:) = 0.0
167	dpr(:) = 0.0
168	lkcoef(:,:) = 0.0
169
170	do K=2,L_LEVELS
171	ilay = L_NLAYRAD+1 - k/2 ! int. arithmetic => gives the gcm layer index (reversed)
172	DPR(k) = PLEV(K)-PLEV(K-1)
173
174	! if we have continuum opacities, we need dz
175	dz(k) = dpr(k)RTMID(K)/(gzlat_ig(ilay)*PMID(K))
176	U(k) = Cmk(ilay)*DPR(k) ! only Cmk line in optcv.F
177
178	call tpindex(PMID(K),TMID(K),pfgasref,tgasref,LCOEF,MT(K),MP(K))
179
180	do LK=1,4
181	LKCOEF(K,LK) = LCOEF(LK)
182	end do
183	end do ! L_LEVELS
184
185	! Rayleigh scattering
186	do NW=1,L_NSPECTV
187	TRAY(1:4,NW) = 1.d-30
188	do K=5,L_LEVELS
189	TRAY(K,NW) = TAURAY(NW) * DPR(K)
190	end do ! L_LEVELS
191	end do
192
193	DIAG_OPTH(:,:,:) = 0.D0
194	DIAG_OPTT(:,:,:) = 0.D0
195
196	do NW=1,L_NSPECTV
197	! We ignore K=1...
198	do K=2,L_LEVELS
199	! int. arithmetic => gives the gcm layer index (reversed)
200	ilay = L_NLAYRAD+1 - k/2
201
202	! Optics coupled with the microphysics :
203	IF (callmufi .AND. (.NOT. uncoupl_optic_haze)) THEN
204
205	!==========================================================================================
206	! Old optics (must have callclouds = .false.):
207	!==========================================================================================
208	IF (.NOT. opt4clouds) THEN
209	m3as = pqmo(ilay,2) / 2.0
210	m3af = pqmo(ilay,4) / 2.0
211	! Cut-off (here for p = 2.7e3Pa / alt = 70km)
212	IF (ilay .lt. 23) THEN
213	m3as = pqmo(23,2) / 2.0 * (zlev(ilay+1)-zlev(ilay)) / (zlev(24)-zlev(23))
214	m3af = pqmo(23,4) / 2.0 * (zlev(ilay+1)-zlev(ilay)) / (zlev(24)-zlev(23))
215	ENDIF
216
217	dtauaer_s = m3as*rhoaer_s(nw)
218	dtauaer_f = m3af*rhoaer_f(nw)
219
220	!==========================================================================================
221	! New optics :
222	!==========================================================================================
223	ELSE
224	iw = (L_NSPECTV + 1) - NW ! Visible first and return
225	!-----------------------------
226	! HAZE (Spherical + Fractal) :
227	!-----------------------------
228	FTYPE = 1
229
230	! Spherical aerosols :
231	!---------------------
232	CTYPE = 5
233	m0as = pqmo(ilay,1) / 2.0
234	m3as = pqmo(ilay,2) / 2.0
235	! If not callclouds : must have a cut-off (here for p = 2.7e3Pa / alt = 70km)
236	IF (.NOT. callclouds) THEN
237	IF (ilay .lt. 23) THEN
238	m0as = pqmo(23,1) / 2.0 * (zlev(ilay+1)-zlev(ilay)) / (zlev(24)-zlev(23))
239	m3as = pqmo(23,2) / 2.0 * (zlev(ilay+1)-zlev(ilay)) / (zlev(24)-zlev(23))
240	ENDIF
241	ENDIF
242	call get_haze_and_cloud_opacity(FTYPE,CTYPE,m0as,m3as,iw,dtauaer_s,ssa_s(nw),asf_s(nw))
243
244	! Fractal aerosols :
245	!-------------------
246	CTYPE = FTYPE
247	m0af = pqmo(ilay,3) / 2.0
248	m3af = pqmo(ilay,4) / 2.0
249	! If not callclouds : must have a cut-off (here for p = 2.7e3Pa / alt = 70km)
250	IF (.NOT. callclouds) THEN
251	IF (ilay .lt. 23) THEN
252	m0af = pqmo(23,3) / 2.0 * (zlev(ilay+1)-zlev(ilay)) / (zlev(24)-zlev(23))
253	m3af = pqmo(23,4) / 2.0 * (zlev(ilay+1)-zlev(ilay)) / (zlev(24)-zlev(23))
254	ENDIF
255	ENDIF
256	call get_haze_and_cloud_opacity(FTYPE,CTYPE,m0af,m3af,iw,dtauaer_f,ssa_f(nw),asf_f(nw))
257	ENDIF
258
259	! Tuning of optical properties for haze :
260	!dtauaer_s = dtauaer_s * (FHVIS * (1-ssa_s(nw)) + ssa_s(nw))
261	!ssa_s(nw) = ssa_s(nw) / (FHVIS * (1-ssa_s(nw)) + ssa_s(nw))
262	dtauaer_f = dtauaer_f * (FHVIS * (1-ssa_f(nw)) + ssa_f(nw))
263	ssa_f(nw) = ssa_f(nw) / (FHVIS * (1-ssa_f(nw)) + ssa_f(nw))
264
265	! Total of Haze opacity (dtau), SSA (w) and ASF (COS) :
266	DHAZE_T(k,nw) = dtauaer_s + dtauaer_f
267	IF (dtauaer_s + dtauaer_f .GT. 1.D-30) THEN
268	SSA_T(k,nw) = ( dtauaer_sssa_s(nw) + dtauaer_fssa_f(nw) ) / ( dtauaer_s+dtauaer_f )
269	ASF_T(k,nw) = ( dtauaer_sssa_s(nw)asf_s(nw) + dtauaer_fssa_f(nw)asf_f(nw) ) &
270	/ ( ssa_s(nw)dtauaer_s + ssa_f(nw)dtauaer_f )
271	ELSE
272	DHAZE_T(k,nw) = 0.D0
273	SSA_T(k,nw) = 1.0
274	ASF_T(k,nw) = 1.0
275	ENDIF
276
277	! Diagnostics for the haze :
278	DIAG_OPTH(k,nw,1) = DHAZE_T(k,nw) ! dtau
279	DIAG_OPTH(k,nw,2) = SSA_T(k,nw) ! wbar
280	DIAG_OPTH(k,nw,3) = ASF_T(k,nw) ! gbar
281
282	!---------------------
283	! CLOUDS (Spherical) :
284	!---------------------
285	IF (callclouds) THEN
286	CTYPE = 0
287	m0ccn = pqmo(ilay,5) / 2.0
288	m3ccn = pqmo(ilay,6) / 2.0
289	m3cld = pqmo(ilay,6) / 2.0
290
291	! Clear / Dark column method :
292	!-----------------------------
293
294	! CCN's SSA :
295	call get_haze_and_cloud_opacity(FTYPE,FTYPE,m0ccn,m3ccn,iw,dtau_ccn,ssa_ccn(nw),asf_ccn(nw))
296
297	! Clear column (CCN, C2H2, C2H6, HCN) :
298	IF (CDCOLUMN == 0) THEN
299	DO iq = 2, nice
300	m3cld = m3cld + (pqmo(ilay,ices_indx(iq)) / 2.0)
301	ENDDO
302	call get_haze_and_cloud_opacity(FTYPE,CTYPE,m0ccn,m3cld,iw,dtau_cld,ssa_cld(nw),asf_cld(nw))
303
304	! Dark column (CCN, CH4, C2H2, C2H6, HCN) :
305	ELSEIF (CDCOLUMN == 1) THEN
306	DO iq = 1, nice
307	m3cld = m3cld + (pqmo(ilay,ices_indx(iq)) / 2.0)
308	ENDDO
309	call get_haze_and_cloud_opacity(FTYPE,CTYPE,m0ccn,m3cld,iw,dtau_cld,ssa_cld(nw),asf_cld(nw))
310
311	ELSE
312	WRITE(,) 'WARNING OPTCV.F90 : CDCOLUMN MUST BE 0 OR 1'
313	WRITE(,) 'WE USE DARK COLUMN ...'
314	DO iq = 1, nice
315	m3cld = m3cld + (pqmo(ilay,ices_indx(iq)) / 2.0)
316	ENDDO
317	call get_haze_and_cloud_opacity(FTYPE,CTYPE,m0ccn,m3cld,iw,dtau_cld,ssa_cld(nw),asf_cld(nw))
318	ENDIF
319
320	! For small dropplets, opacity of nucleus dominates
321	dtau_cld = (dtau_cldm3ccn + dtau_cldm3cld) / (m3ccn + m3cld)
322	ssa_cld(nw) = (ssa_ccn(nw)m3ccn + ssa_cld(nw)m3cld) / (m3ccn + m3cld)
323
324	! Tuning of optical properties for clouds :
325	dtau_cld = dtau_cld * (FCVIS * (1-ssa_cld(nw)) + ssa_cld(nw))
326	ssa_cld(nw) = ssa_cld(nw) / (FCVIS * (1-ssa_cld(nw)) + ssa_cld(nw))
327
328	! Total of Haze + Clouds opacity (dtau), SSA (w) and ASF (COS) :
329	DHAZE_T(k,nw) = dtauaer_s + dtauaer_f + dtau_cld
330	IF (DHAZE_T(k,nw) .GT. 1.D-30) THEN
331	SSA_T(k,nw) = ( dtauaer_sssa_s(nw) + dtauaer_fssa_f(nw) + dtau_cld*ssa_cld(nw) ) / ( dtauaer_s+dtauaer_f+dtau_cld )
332	ASF_T(k,nw) = ( dtauaer_sssa_s(nw)asf_s(nw) + dtauaer_fssa_f(nw)asf_f(nw) + dtau_cldssa_cld(nw)asf_cld(nw) ) &
333	/ ( ssa_s(nw)dtauaer_s + ssa_f(nw)dtauaer_f + ssa_cld(nw)*dtau_cld )
334	ELSE
335	DHAZE_T(k,nw) = 0.D0
336	SSA_T(k,nw) = 1.0
337	ASF_T(k,nw) = 1.0
338	ENDIF
339
340	! Diagnostics for clouds :
341	DIAG_OPTT(k,nw,1) = DHAZE_T(k,nw) ! dtau
342	DIAG_OPTT(k,nw,2) = SSA_T(k,nw) ! wbar
343	DIAG_OPTT(k,nw,3) = ASF_T(k,nw) ! gbar
344
345	ELSE
346	! Diagnostics for clouds :
347	DIAG_OPTT(k,nw,1) = 0.D0 ! dtau
348	DIAG_OPTT(k,nw,2) = 1.0 ! wbar
349	DIAG_OPTT(k,nw,3) = 1.0 ! gbar
350	ENDIF
351
352	! Optics and microphysics no coupled :
353	ELSE
354	! Call fixed vertical haze profile of extinction - same for all columns
355	call disr_haze(dz(k),plev(k),wnov(nw),DHAZE_T(k,nw),SSA_T(k,nw),ASF_T(k,nw))
356	if (seashaze) DHAZE_T(k,nw) = DHAZE_T(k,nw)*seashazefact(k)
357	! Diagnostics for the haze :
358	DIAG_OPTH(k,nw,1) = DHAZE_T(k,nw) ! dtau
359	DIAG_OPTH(k,nw,2) = SSA_T(k,nw) ! wbar
360	DIAG_OPTH(k,nw,3) = ASF_T(k,nw) ! gbar
361	! Diagnostics for clouds :
362	DIAG_OPTT(k,nw,1) = 0.D0 ! dtau
363	DIAG_OPTT(k,nw,2) = 1.0 ! wbar
364	DIAG_OPTT(k,nw,3) = 1.0 ! gbar
365	ENDIF ! ENDIF callmufi
366
367	!JL18 It seems to be good to have aerosols in the first "radiative layer" of the gcm in the IR
368	! but visible does not handle very well diffusion in first layer.
369	! The tauaero and tauray are thus set to 0 (a small value for rayleigh because the code crashes otherwise)
370	! in the 4 first semilayers in optcv, but not optci.
371	! This solves random variations of the sw heating at the model top.
372	if (k<5) DHAZE_T(K,:) = 0.0
373
374	DRAYAER = TRAY(K,NW)
375	! DRAYAER is Tau RAYleigh scattering, plus AERosol opacity
376	DRAYAER = DRAYAER + DHAZE_T(K,NW) ! Titan's aerosol
377
378	DCONT = 0.0 ! continuum absorption
379
380	if(continuum.and.(.not.graybody).and.callgasvis)then
381	! include continua if necessary
382	wn_cont = dble(wnov(nw))
383	T_cont = dble(TMID(k))
384	do igas=1,ngasmx
385
386	p_cont = dble(PMID(k)scalepgfrac(igas,ilay))
387
388	dtemp=0.0
389	if(igas.eq.igas_N2)then
390
391	interm = indv(nw,igas,igas)
392	! call interpolateN2N2(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
393	indv(nw,igas,igas) = interm
394	! only goes to 500 cm^-1, so unless we're around a cold brown dwarf, this is irrelevant in the visible
395
396	elseif(igas.eq.igas_H2)then
397
398	! first do self-induced absorption
399	interm = indv(nw,igas,igas)
400	call interpolateH2H2(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
401	indv(nw,igas,igas) = interm
402
403	! then cross-interactions with other gases
404	do jgas=1,ngasmx
405	p_cross = dble(PMID(k)scalepgfrac(jgas,ilay))
406	dtempc = 0.0
407	if(jgas.eq.igas_N2)then
408	interm = indv(nw,igas,jgas)
409	call interpolateN2H2(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm)
410	indv(nw,igas,jgas) = interm
411	! should be irrelevant in the visible
412	endif
413	dtemp = dtemp + dtempc
414	enddo
415
416	elseif(igas.eq.igas_CH4)then
417
418	! first do self-induced absorption
419	interm = indv(nw,igas,igas)
420	call interpolateCH4CH4(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
421	indv(nw,igas,igas) = interm
422
423	! then cross-interactions with other gases
424	do jgas=1,ngasmx
425	p_cross = dble(PMID(k)scalepgfrac(jgas,ilay))
426	dtempc = 0.0
427	if(jgas.eq.igas_N2)then
428	interm = indv(nw,igas,jgas)
429	call interpolateN2CH4(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm)
430	indv(nw,igas,jgas) = interm
431	endif
432	dtemp = dtemp + dtempc
433	enddo
434
435	endif
436
437	DCONT = DCONT + dtemp
438
439	enddo
440
441	DCONT = DCONT*dz(k)
442
443	endif
444
445	do ng=1,L_NGAUSS-1
446
447	! Now compute TAUGAS
448
449	! JVO 2017 : added tmpk because the repeated calls to gasi/v increased dramatically
450	! the execution time of optci/v -> ~ factor 2 on the whole radiative
451	! transfer on the tested simulations !
452
453	if (corrk_recombin) then
454	tmpk = GASV_RECOMB(MT(K):MT(K)+1,MP(K):MP(K)+1,NW,NG)
455	else
456	tmpk = GASV(MT(K):MT(K)+1,MP(K):MP(K)+1,1,NW,NG)
457	endif
458
459	KCOEF(1) = tmpk(1,1) ! KCOEF(1) = GASV(MT(K),MP(K),1,NW,NG)
460	KCOEF(2) = tmpk(1,2) ! KCOEF(2) = GASV(MT(K),MP(K)+1,1,NW,NG)
461	KCOEF(3) = tmpk(2,2) ! KCOEF(3) = GASV(MT(K)+1,MP(K)+1,1,NW,NG)
462	KCOEF(4) = tmpk(2,1) ! KCOEF(4) = GASV(MT(K)+1,MP(K),1,NW,NG)
463
464	! Interpolate the gaseous k-coefficients to the requested T,P values
465
466	ANS = LKCOEF(K,1)KCOEF(1) + LKCOEF(K,2)KCOEF(2) + &
467	LKCOEF(K,3)KCOEF(3) + LKCOEF(K,4)KCOEF(4)
468
469
470	TAUGAS = U(k)*ANS
471
472	TAUGSURF(NW,NG) = TAUGSURF(NW,NG) + TAUGAS + DCONT
473	DTAUKV(K,nw,ng) = TAUGAS &
474	+ DRAYAER & ! DRAYAER includes all scattering contributions
475	+ DCONT ! For parameterized continuum aborption
476	end do
477
478	! Now fill in the "clear" part of the spectrum (NG = L_NGAUSS),
479	! which holds continuum opacity only
480
481	NG = L_NGAUSS
482	DTAUKV(K,nw,ng) = DRAYAER + DCONT ! Scattering + parameterized continuum absorption, including Titan's haze
483
484	DIAG_OPTH(K,nw,4) = DRAYAER
485	DIAG_OPTH(K,nw,5) = TAUGAS
486	DIAG_OPTH(K,nw,6) = DCONT
487	DIAG_OPTT(K,nw,4) = DRAYAER
488	DIAG_OPTT(K,nw,5) = TAUGAS
489	DIAG_OPTT(K,nw,6) = DCONT
490
491	end do ! K = L_LEVELS
492	end do ! nw = L_NSPECTV
493
494	!=======================================================================
495	! Now the full treatment for the layers, where besides the opacity
496	! we need to calculate the scattering albedo and asymmetry factors
497	! ======================================================================
498
499	! Haze scattering
500	!JL18 It seems to be good to have aerosols in the first "radiative layer" of the gcm in the IR
501	! but not in the visible
502	! The dhaze_s is thus set to 0 in the 4 first semilayers in optcv, but not optci.
503	! This solves random variations of the sw heating at the model top.
504	DO NW=1,L_NSPECTV
505	DHAZES_T(1:4,NW) = 0.d0
506	DO K=5,L_LEVELS
507	DHAZES_T(K,NW) = DHAZE_T(K,NW) * SSA_T(K,NW) ! effect of scattering albedo on haze
508	ENDDO
509	ENDDO
510
511	! NW spectral loop
512	DO NW=1,L_NSPECTV
513	! L vertical loop
514	DO L=1,L_NLAYRAD-1
515	K = 2*L+1
516	atemp(L,NW) = ASF_T(K,NW)DHAZES_T(K,NW) + ASF_T(K+1,NW)DHAZES_T(K+1,NW)
517	btemp(L,NW) = DHAZES_T(K,NW) + DHAZES_T(K+1,NW)
518	ctemp(L,NW) = btemp(L,NW) + 0.9999*(TRAY(K,NW) + TRAY(K+1,NW)) ! JVO 2017 : does this 0.999 is really meaningful ?
519	btemp(L,NW) = btemp(L,NW) + TRAY(K,NW) + TRAY(K+1,NW)
520	COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW)
521	END DO
522
523	! Last level
524	L = L_NLAYRAD
525	K = 2*L+1
526	atemp(L,NW) = ASF_T(K,NW)*DHAZES_T(K,NW)
527	btemp(L,NW) = DHAZES_T(K,NW)
528	ctemp(L,NW) = btemp(L,NW) + 0.9999*TRAY(K,NW) ! JVO 2017 : does this 0.999 is really meaningful ?
529	btemp(L,NW) = btemp(L,NW) + TRAY(K,NW)
530	COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW)
531	END DO
532
533	! NG Gauss loop
534	DO NG=1,L_NGAUSS
535	! NW spectral loop
536	DO NW=1,L_NSPECTV
537	! L vertical loop
538	DO L=1,L_NLAYRAD-1
539	K = 2*L+1
540	DTAUV(L,nw,ng) = DTAUKV(K,NW,NG) + DTAUKV(K+1,NW,NG)
541	WBARV(L,nw,ng) = ctemp(L,NW) / DTAUV(L,nw,ng)
542	END DO
543
544	! Last level
545	L = L_NLAYRAD
546	K = 2*L+1
547	DTAUV(L,nw,ng) = DTAUKV(K,NW,NG)
548	WBARV(L,NW,NG) = ctemp(L,NW) / DTAUV(L,NW,NG)
549	END DO
550	END DO
551
552	! Total extinction optical depths
553	!DO NG=1,L_NGAUSS ! full gauss loop
554	! DO NW=1,L_NSPECTV
555	! TAUCUMV(1,NW,NG)=0.0D0
556	! DO K=2,L_LEVELS
557	! TAUCUMV(K,NW,NG)=TAUCUMV(K-1,NW,NG)+DTAUKV(K,NW,NG)
558	! END DO
559	! DO L=1,L_NLAYRAD
560	! TAUV(L,NW,NG)=TAUCUMV(2*L,NW,NG)
561	! END DO
562	! TAUV(L,NW,NG)=TAUCUMV(2*L_NLAYRAD+1,NW,NG)
563	! END DO
564	!END DO ! end full gauss loop
565
566	TAUCUMV(:,:,:) = DTAUKV(:,:,:)
567	DO L=1,L_NLAYRAD
568	TAUV(L,:,:)=TAUCUMV(2*L,:,:)
569	END DO
570	TAUV(L,:,:)=TAUCUMV(2*L_NLAYRAD+1,:,:)
571
572	if(firstcall) firstcall = .false.
573
574	return
575
576
577	end subroutine optcv

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

Original Format