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optcv.F90 @ 1943

Last change on this file since 1943 was 1897, checked in by jvatant, 8 years ago
Making Titan's hazy again - part II + Major updates of J.Burgalat YAMMS library and optical coupling, including : ++ Added the routines for haze optics inside YAMMS ++ Calling rad. transf. with interactive haze is plugged in but should stay unactive as long as the microphysics is in test phase : cf "uncoupl_optic_haze" flag : true for now ! ++ Also some sanity checks for negative tendencies and some others upkeep of YAMMS model + Also added a temporary CPP key USE_QTEST in physiq_mod that enables to have microphysical tendencies separated from dynamics for debugging and test phases -- JVO and JB
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1	SUBROUTINE OPTCV(PQO,NLAY,PLEV,TMID,PMID, &
2	DTAUV,TAUV,TAUCUMV,WBARV,COSBV,TAURAY,TAUGSURF)
3
4	use radinc_h
5	use radcommon_h, only: gasv, tlimit, Cmk, tgasref, pfgasref,wnov,scalep,indv,glat_ig,gweight
6	use gases_h
7	use comcstfi_mod, only: g, r
8	use callkeys_mod, only: continuum,graybody,callgasvis,callclouds,callmufi,uncoupl_optic_haze
9	use tracer_h, only: nmicro,nice
10	use MMP_OPTICS
11
12	implicit none
13
14	!==================================================================
15	!
16	! Purpose
17	! -------
18	! Calculates shortwave optical constants at each level.
19	!
20	! Authors
21	! -------
22	! Adapted from the NASA Ames code by R. Wordsworth (2009)
23	! Clean and adaptation to Titan by J. Vatant d'Ollone (2016-17)
24	!
25	!==================================================================
26	!
27	! THIS SUBROUTINE SETS THE OPTICAL CONSTANTS IN THE VISUAL
28	! IT CALCULATES FOR EACH LAYER, FOR EACH SPECTRAL INTERVAL IN THE VISUAL
29	! LAYER: WBAR, DTAU, COSBAR
30	! LEVEL: TAU
31	!
32	! TAUV(L,NW,NG) is the cumulative optical depth at the top of radiation code
33	! layer L. NW is spectral wavelength interval, ng the Gauss point index.
34	!
35	! TLEV(L) - Temperature at the layer boundary
36	! PLEV(L) - Pressure at the layer boundary (i.e. level)
37	! GASV(NT,NPS,NW,NG) - Visible k-coefficients
38	!
39	!-------------------------------------------------------------------
40
41
42	!==========================================================
43	! Input/Output
44	!==========================================================
45	REAL*8, INTENT(IN) :: PQO(nlay,nmicro) ! Tracers (X/m2).
46	INTEGER, INTENT(IN) :: NLAY ! Number of pressure layers (for pqo)
47	REAL*8, INTENT(IN) :: PLEV(L_LEVELS)
48	REAL*8, INTENT(IN) :: TMID(L_LEVELS), PMID(L_LEVELS)
49	REAL*8, INTENT(IN) :: TAURAY(L_NSPECTV)
50
51	REAL*8, INTENT(OUT) :: DTAUV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
52	REAL*8, INTENT(OUT) :: TAUV(L_NLEVRAD,L_NSPECTV,L_NGAUSS)
53	REAL*8, INTENT(OUT) :: TAUCUMV(L_LEVELS,L_NSPECTV,L_NGAUSS)
54	REAL*8, INTENT(OUT) :: COSBV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
55	REAL*8, INTENT(OUT) :: WBARV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
56	REAL*8, INTENT(OUT) :: TAUGSURF(L_NSPECTV,L_NGAUSS-1)
57	! ==========================================================
58
59	real*8 DTAUKV(L_LEVELS,L_NSPECTV,L_NGAUSS)
60
61	! Titan customisation
62	! J. Vatant d'Ollone (2016)
63	real*8 DHAZE_T(L_LEVELS,L_NSPECTI)
64	real*8 DHAZES_T(L_LEVELS,L_NSPECTI)
65	real*8 SSA_T(L_LEVELS,L_NSPECTI)
66	real*8 ASF_T(L_LEVELS,L_NSPECTI)
67	real*8 INT_DTAU(L_NLAYRAD,L_NSPECTI)
68	real*8 K_HAZE(L_NLAYRAD,L_NSPECTI)
69
70	CHARACTER*2 str2
71	! ==========================
72
73	integer L, NW, NG, K, LK, IAER
74	integer MT(L_LEVELS), MP(L_LEVELS), NP(L_LEVELS)
75	real*8 ANS, TAUGAS
76	real*8 TRAY(L_LEVELS,L_NSPECTV)
77	real*8 DPR(L_LEVELS), U(L_LEVELS)
78	real*8 LCOEF(4), LKCOEF(L_LEVELS,4)
79
80	real*8 DCONT
81	real*8 DRAYAER
82	double precision wn_cont, p_cont, p_air, T_cont, dtemp, dtempc
83	double precision p_cross
84
85	real*8 KCOEF(4)
86
87	! temporary variable to reduce memory access time to gasv
88	real*8 tmpk(2,2)
89
90	! temporary variables for multiple aerosol calculation
91	real*8 atemp(L_NLAYRAD,L_NSPECTV)
92	real*8 btemp(L_NLAYRAD,L_NSPECTV)
93	real*8 ctemp(L_NLAYRAD,L_NSPECTV)
94
95	! variables for k in units m^-1
96	real*8 dz(L_LEVELS)
97
98	integer igas, jgas, ilay
99
100	integer interm
101
102	real*8 m0as,m3as,m0af,m3af
103	real*8 ext_s,sca_s,ssa_s,asf_s
104	real*8 ext_f,sca_f,ssa_f,asf_f
105	logical,save :: firstcall=.true.
106	!$OMP THREADPRIVATE(firstcall)
107
108
109	!! AS: to save time in computing continuum (see bilinearbig)
110	IF (.not.ALLOCATED(indv)) THEN
111	ALLOCATE(indv(L_NSPECTV,ngasmx,ngasmx))
112	indv = -9999 ! this initial value means "to be calculated"
113	ENDIF
114
115	! Some initialisation beacause there's a pb with disr_haze at the limits (nw=1)
116	! I should check this - For now we set vars to zero : better than nans - JVO 2017
117
118	dhaze_t(:,:) = 0.
119	ssa_t(:,:) = 0.
120	asf_t(:,:) = 0.
121
122
123	!=======================================================================
124	! Determine the total gas opacity throughout the column, for each
125	! spectral interval, NW, and each Gauss point, NG.
126	! Calculate the continuum opacities, i.e., those that do not depend on
127	! NG, the Gauss index.
128
129	taugsurf(:,:) = 0.0
130	dpr(:) = 0.0
131	lkcoef(:,:) = 0.0
132
133	do K=2,L_LEVELS
134	DPR(k) = PLEV(K)-PLEV(K-1)
135
136	! if we have continuum opacities, we need dz
137
138	dz(k) = dpr(k)RTMID(K)/(glat_ig*PMID(K))
139	U(k) = Cmk*DPR(k) ! only Cmk line in optcv.F
140
141	call tpindex(PMID(K),TMID(K),pfgasref,tgasref,LCOEF,MT(K),MP(K))
142
143	do LK=1,4
144	LKCOEF(K,LK) = LCOEF(LK)
145	end do
146	end do ! levels
147
148	! Rayleigh scattering
149	do NW=1,L_NSPECTV
150	do K=2,L_LEVELS
151	TRAY(K,NW) = TAURAY(NW) * DPR(K)
152	end do ! levels
153	end do
154
155	! we ignore K=1...
156	do K=2,L_LEVELS
157
158	ilay = k / 2 ! int. arithmetic => gives the gcm layer index
159
160	do NW=1,L_NSPECTV
161
162	! Optical coupling of YAMMS is plugged but inactivated (if false) for now
163	! as long as the microphysics only isn't fully debugged -- JVO 01/18
164	IF (callmufi .AND. (.NOT. uncoupl_optic_haze)) THEN
165	m0as = pqo(ilay,1)
166	m3as = pqo(ilay,2)
167	m0af = pqo(ilay,3)
168	m3af = pqo(ilay,4)
169
170	IF (.NOT.mmp_sph_optics_vis(m0as,m3as,nw,ext_s,sca_s,ssa_s,asf_s)) &
171	CALL abort_gcm("optcv", "Fatal error in mmp_sph_optics_vis", 12)
172	IF (.NOT.mmp_fra_optics_vis(m0af,m3af,nw,ext_f,sca_f,ssa_f,asf_f)) &
173	CALL abort_gcm("optcv", "Fatal error in mmp_fra_optics_vis", 12)
174	dhaze_T(k,nw) = ext_s+ext_f
175	SSA_T(k,nw) = (sca_s+sca_f)/dhaze_T(k,nw)
176	ASF_T(k,nw) = (asf_ssca_s + asf_fsca_f) /(sca_s+sca_f)
177	IF (callclouds.and.firstcall) &
178	WRITE(,) 'WARNING: In optcv, optical properties &
179	&calculations are not implemented yet'
180	ELSE
181	! Call fixed vertical haze profile of extinction - same for all columns
182	call disr_haze(dz(k),plev(k),wnov(nw),dhaze_T(k,nw),SSA_T(k,nw),ASF_T(k,nw))
183	ENDIF
184
185	DRAYAER = TRAY(K,NW)
186	! DRAYAER is Tau RAYleigh scattering, plus AERosol opacity
187	DRAYAER = DRAYAER + DHAZE_T(K,NW) ! Titan's aerosol
188
189	DCONT = 0.0 ! continuum absorption
190
191	if(continuum.and.(.not.graybody).and.callgasvis)then
192	! include continua if necessary
193	wn_cont = dble(wnov(nw))
194	T_cont = dble(TMID(k))
195	do igas=1,ngasmx
196
197	p_cont = dble(PMID(k)scalepgfrac(igas,ilay))
198
199	dtemp=0.0
200	if(igas.eq.igas_N2)then
201
202	interm = indv(nw,igas,igas)
203	! call interpolateN2N2(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
204	indv(nw,igas,igas) = interm
205	! only goes to 500 cm^-1, so unless we're around a cold brown dwarf, this is irrelevant in the visible
206
207	elseif(igas.eq.igas_H2)then
208
209	! first do self-induced absorption
210	interm = indv(nw,igas,igas)
211	call interpolateH2H2(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
212	indv(nw,igas,igas) = interm
213
214	! then cross-interactions with other gases
215	do jgas=1,ngasmx
216	p_cross = dble(PMID(k)scalepgfrac(jgas,ilay))
217	dtempc = 0.0
218	if(jgas.eq.igas_N2)then
219	interm = indv(nw,igas,jgas)
220	call interpolateN2H2(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm)
221	indv(nw,igas,jgas) = interm
222	! should be irrelevant in the visible
223	endif
224	dtemp = dtemp + dtempc
225	enddo
226
227	elseif(igas.eq.igas_CH4)then
228
229	! first do self-induced absorption
230	interm = indv(nw,igas,igas)
231	call interpolateCH4CH4(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
232	indv(nw,igas,igas) = interm
233
234	! then cross-interactions with other gases
235	do jgas=1,ngasmx
236	p_cross = dble(PMID(k)scalepgfrac(jgas,ilay))
237	dtempc = 0.0
238	if(jgas.eq.igas_N2)then
239	interm = indv(nw,igas,jgas)
240	call interpolateN2CH4(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm)
241	indv(nw,igas,jgas) = interm
242	endif
243	dtemp = dtemp + dtempc
244	enddo
245
246	endif
247
248	DCONT = DCONT + dtemp
249
250	enddo
251
252	DCONT = DCONT*dz(k)
253
254	endif
255
256	do ng=1,L_NGAUSS-1
257
258	! Now compute TAUGAS
259
260	! JVO 2017 : added tmpk because the repeated calls to gasi/v increased dramatically
261	! the execution time of optci/v -> ~ factor 2 on the whole radiative
262	! transfer on the tested simulations !
263
264	tmpk = GASV(MT(K):MT(K)+1,MP(K):MP(K)+1,1,NW,NG)
265
266	KCOEF(1) = tmpk(1,1) ! KCOEF(1) = GASV(MT(K),MP(K),1,NW,NG)
267	KCOEF(2) = tmpk(1,2) ! KCOEF(2) = GASV(MT(K),MP(K)+1,1,NW,NG)
268	KCOEF(3) = tmpk(2,2) ! KCOEF(3) = GASV(MT(K)+1,MP(K)+1,1,NW,NG)
269	KCOEF(4) = tmpk(2,1) ! KCOEF(4) = GASV(MT(K)+1,MP(K),1,NW,NG)
270
271	! Interpolate the gaseous k-coefficients to the requested T,P values
272
273	ANS = LKCOEF(K,1)KCOEF(1) + LKCOEF(K,2)KCOEF(2) + &
274	LKCOEF(K,3)KCOEF(3) + LKCOEF(K,4)KCOEF(4)
275
276
277	TAUGAS = U(k)*ANS
278
279	TAUGSURF(NW,NG) = TAUGSURF(NW,NG) + TAUGAS + DCONT
280	DTAUKV(K,nw,ng) = TAUGAS &
281	+ DRAYAER & ! DRAYAER includes all scattering contributions
282	+ DCONT ! For parameterized continuum aborption
283
284	end do
285
286	! Now fill in the "clear" part of the spectrum (NG = L_NGAUSS),
287	! which holds continuum opacity only
288
289	NG = L_NGAUSS
290	DTAUKV(K,nw,ng) = DRAYAER + DCONT ! Scattering + parameterized continuum absorption, including Titan's haze
291
292	end do
293	end do
294
295
296	!=======================================================================
297	! Now the full treatment for the layers, where besides the opacity
298	! we need to calculate the scattering albedo and asymmetry factors
299
300	! Haze scattering
301	DO NW=1,L_NSPECTV
302	DO K=2,L_LEVELS
303	DHAZES_T(K,NW) = DHAZE_T(K,NW) * SSA_T(K,NW) ! effect of scattering albedo on haze
304	ENDDO
305	ENDDO
306
307
308	DO NW=1,L_NSPECTV
309	DO L=1,L_NLAYRAD-1
310	K = 2*L+1
311	atemp(L,NW) = ASF_T(K,NW)DHAZES_T(K,NW) + ASF_T(K+1,NW)DHAZES_T(K+1,NW)
312	btemp(L,NW) = DHAZES_T(K,NW) + DHAZES_T(K+1,NW)
313	ctemp(L,NW) = btemp(L,NW) + 0.9999*(TRAY(K,NW) + TRAY(K+1,NW)) ! JVO 2017 : does this 0.999 is really meaningful ?
314	btemp(L,NW) = btemp(L,NW) + TRAY(K,NW) + TRAY(K+1,NW)
315	COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW)
316	END DO ! L vertical loop
317
318	! Last level
319	L = L_NLAYRAD
320	K = 2*L+1
321	atemp(L,NW) = ASF_T(K,NW)*DHAZES_T(K,NW)
322	btemp(L,NW) = DHAZES_T(K,NW)
323	ctemp(L,NW) = btemp(L,NW) + 0.9999*TRAY(K,NW) ! JVO 2017 : does this 0.999 is really meaningful ?
324	btemp(L,NW) = btemp(L,NW) + TRAY(K,NW)
325	COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW)
326
327
328	END DO ! NW spectral loop
329
330	DO NG=1,L_NGAUSS
331	DO NW=1,L_NSPECTV
332	DO L=1,L_NLAYRAD-1
333
334	K = 2*L+1
335	DTAUV(L,nw,ng) = DTAUKV(K,NW,NG) + DTAUKV(K+1,NW,NG)
336	WBARV(L,nw,ng) = ctemp(L,NW) / DTAUV(L,nw,ng)
337
338	END DO ! L vertical loop
339
340	! Last level
341
342	L = L_NLAYRAD
343	K = 2*L+1
344	DTAUV(L,nw,ng) = DTAUKV(K,NW,NG)
345
346	WBARV(L,NW,NG) = ctemp(L,NW) / DTAUV(L,NW,NG)
347
348	END DO ! NW spectral loop
349	END DO ! NG Gauss loop
350
351	! Total extinction optical depths
352
353	DO NG=1,L_NGAUSS ! full gauss loop
354	DO NW=1,L_NSPECTV
355	TAUV(1,NW,NG)=0.0D0
356	DO L=1,L_NLAYRAD
357	TAUV(L+1,NW,NG)=TAUV(L,NW,NG)+DTAUV(L,NW,NG)
358	END DO
359
360	TAUCUMV(1,NW,NG)=0.0D0
361	DO K=2,L_LEVELS
362	TAUCUMV(K,NW,NG)=TAUCUMV(K-1,NW,NG)+DTAUKV(K,NW,NG)
363	END DO
364	END DO
365	END DO ! end full gauss loop
366
367
368	! Titan's outputs (JVO, 2016)===============================================
369	! do l=1,L_NLAYRAD
370	! do nw=1,L_NSPECTV
371	! INT_DTAU(L,NW) = 0.0d+0
372	! DO NG=1,L_NGAUSS
373	! INT_DTAU(L,NW)= INT_DTAU(L,NW) + dtauv(L,nw,ng)*gweight(NG)
374	! enddo
375	! enddo
376	! enddo
377
378	! do nw=1,L_NSPECTV
379	! write(str2,'(i2.2)') nw
380	! call writediagfi(1,'kgv'//str2,'Gaz extinction coefficient VI band '//str2,'m-1',1,int_dtau(L_NLAYRAD:1:-1,nw)/dz_lay(L_NLAYRAD:1:-1))
381	! call writediagfi(1,'khv'//str2,'Haze extinction coefficient VI band '//str2,'m-1',1,k_haze(L_NLAYRAD:1:-1,nw)/dz_lay(L_NLAYRAD:1:-1))
382	! enddo
383
384	! ==============================================================================
385
386	if(firstcall) firstcall = .false.
387
388	return
389
390
391	end subroutine optcv

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