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optcv.F90 @ 1974

Last change on this file since 1974 was 1725, checked in by jvatant, 7 years ago

Optimization of the optci/cv routines

The repeated calls to huge matrices gasi/v increased dramatically the execution time because of memory access
Added a tmpk variable
Save ~ 50% time on the RT, ~30% on the whole code on the tested simulations

JVO

Property svn:executable set to *

File size: 12.0 KB

Line
1	SUBROUTINE OPTCV(DTAUV,TAUV,TAUCUMV,PLEV, &
2	QXVAER,QSVAER,GVAER,WBARV,COSBV, &
3	TAURAY,TAUAERO,TMID,PMID,TAUGSURF,QVAR,MUVAR)
4
5	use radinc_h
6	use radcommon_h, only: gasv, tlimit, wrefVAR, Cmk, tgasref, pfgasref,wnov,scalep,indv,glat_ig
7	use gases_h
8	use comcstfi_mod, only: g, r, mugaz
9	use callkeys_mod, only: kastprof,continuum,graybody,H2Ocont_simple,callgasvis
10
11	implicit none
12
13	!==================================================================
14	!
15	! Purpose
16	! -------
17	! Calculates shortwave optical constants at each level.
18	!
19	! Authors
20	! -------
21	! Adapted from the NASA Ames code by R. Wordsworth (2009)
22	!
23	!==================================================================
24	!
25	! THIS SUBROUTINE SETS THE OPTICAL CONSTANTS IN THE VISUAL
26	! IT CALCULATES FOR EACH LAYER, FOR EACH SPECTRAL INTERVAL IN THE VISUAL
27	! LAYER: WBAR, DTAU, COSBAR
28	! LEVEL: TAU
29	!
30	! TAUV(L,NW,NG) is the cumulative optical depth at the top of radiation code
31	! layer L. NW is spectral wavelength interval, ng the Gauss point index.
32	!
33	! TLEV(L) - Temperature at the layer boundary
34	! PLEV(L) - Pressure at the layer boundary (i.e. level)
35	! GASV(NT,NPS,NW,NG) - Visible k-coefficients
36	!
37	!-------------------------------------------------------------------
38
39
40	real*8 DTAUV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
41	real*8 DTAUKV(L_LEVELS,L_NSPECTV,L_NGAUSS)
42	real*8 TAUV(L_NLEVRAD,L_NSPECTV,L_NGAUSS)
43	real*8 TAUCUMV(L_LEVELS,L_NSPECTV,L_NGAUSS)
44	real*8 PLEV(L_LEVELS)
45	real*8 TMID(L_LEVELS), PMID(L_LEVELS)
46	real*8 COSBV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
47	real*8 WBARV(L_NLAYRAD,L_NSPECTV,L_NGAUSS)
48
49	! for aerosols
50	real*8 QXVAER(L_LEVELS,L_NSPECTV,NAERKIND)
51	real*8 QSVAER(L_LEVELS,L_NSPECTV,NAERKIND)
52	real*8 GVAER(L_LEVELS,L_NSPECTV,NAERKIND)
53	real*8 TAUAERO(L_LEVELS,NAERKIND)
54	real*8 TAUAEROLK(L_LEVELS,L_NSPECTV,NAERKIND)
55	real*8 TAEROS(L_LEVELS,L_NSPECTV,NAERKIND)
56
57	integer L, NW, NG, K, LK, IAER
58	integer MT(L_LEVELS), MP(L_LEVELS), NP(L_LEVELS)
59	real*8 ANS, TAUGAS
60	real*8 TAURAY(L_NSPECTV)
61	real*8 TRAY(L_LEVELS,L_NSPECTV)
62	real*8 DPR(L_LEVELS), U(L_LEVELS)
63	real*8 LCOEF(4), LKCOEF(L_LEVELS,4)
64
65	real*8 taugsurf(L_NSPECTV,L_NGAUSS-1)
66	real*8 DCONT,DAERO
67	real*8 DRAYAER
68	double precision wn_cont, p_cont, p_air, T_cont, dtemp, dtempc
69	double precision p_cross
70
71	! variable species mixing ratio variables
72	real*8 QVAR(L_LEVELS), WRATIO(L_LEVELS), MUVAR(L_LEVELS)
73	real*8 KCOEF(4)
74	integer NVAR(L_LEVELS)
75
76	! temporary variables to reduce memory access time to gasv
77	real*8 tmpk(2,2)
78	real*8 tmpkvar(2,2,2)
79
80	! temporary variables for multiple aerosol calculation
81	real*8 atemp(L_NLAYRAD,L_NSPECTV)
82	real*8 btemp(L_NLAYRAD,L_NSPECTV)
83	real*8 ctemp(L_NLAYRAD,L_NSPECTV)
84
85	! variables for k in units m^-1
86	real*8 dz(L_LEVELS)
87
88	integer igas, jgas
89
90	integer interm
91
92	!! AS: to save time in computing continuum (see bilinearbig)
93	IF (.not.ALLOCATED(indv)) THEN
94	ALLOCATE(indv(L_NSPECTV,ngasmx,ngasmx))
95	indv = -9999 ! this initial value means "to be calculated"
96	ENDIF
97
98	!=======================================================================
99	! Determine the total gas opacity throughout the column, for each
100	! spectral interval, NW, and each Gauss point, NG.
101	! Calculate the continuum opacities, i.e., those that do not depend on
102	! NG, the Gauss index.
103
104	taugsurf(:,:) = 0.0
105	dpr(:) = 0.0
106	lkcoef(:,:) = 0.0
107
108	do K=2,L_LEVELS
109	DPR(k) = PLEV(K)-PLEV(K-1)
110
111	! if we have continuum opacities, we need dz
112	if(kastprof)then
113	dz(k) = dpr(k)(1000.0d08.3145d0/muvar(k))TMID(K)/(gPMID(K))
114	U(k) = CmkDPR(k)mugaz/muvar(k)
115	else
116	dz(k) = dpr(k)RTMID(K)/(glat_igPMID(K))mugaz/muvar(k)
117	U(k) = CmkDPR(k)mugaz/muvar(k) ! only Cmk line in optci.F
118	!JL13 the mugaz/muvar factor takes into account water meanmolecular weight if water is present
119	endif
120
121	call tpindex(PMID(K),TMID(K),QVAR(K),pfgasref,tgasref,WREFVAR, &
122	LCOEF,MT(K),MP(K),NVAR(K),WRATIO(K))
123
124	do LK=1,4
125	LKCOEF(K,LK) = LCOEF(LK)
126	end do
127	end do ! levels
128
129	! Spectral dependance of aerosol absorption
130	do iaer=1,naerkind
131	do NW=1,L_NSPECTV
132	do K=2,L_LEVELS
133	TAEROS(K,NW,IAER) = TAUAERO(K,IAER) * QXVAER(K,NW,IAER)
134	end do ! levels
135	end do
136	end do
137
138	! Rayleigh scattering
139	do NW=1,L_NSPECTV
140	do K=2,L_LEVELS
141	TRAY(K,NW) = TAURAY(NW) * DPR(K)
142	end do ! levels
143	end do
144
145	! we ignore K=1...
146	do K=2,L_LEVELS
147
148	do NW=1,L_NSPECTV
149
150	DRAYAER = TRAY(K,NW)
151	! DRAYAER is Tau RAYleigh scattering, plus AERosol opacity
152	do iaer=1,naerkind
153	DRAYAER = DRAYAER + TAEROS(K,NW,IAER)
154	end do
155
156	DCONT = 0.0 ! continuum absorption
157
158	if(continuum.and.(.not.graybody).and.callgasvis)then
159	! include continua if necessary
160	wn_cont = dble(wnov(nw))
161	T_cont = dble(TMID(k))
162	do igas=1,ngasmx
163
164	if(gfrac(igas).eq.-1)then ! variable
165	p_cont = dble(PMID(k)scalepQVAR(k)) ! qvar = mol/mol
166	else
167	p_cont = dble(PMID(k)scalepgfrac(igas)*(1.-QVAR(k)))
168	endif
169
170	dtemp=0.0
171	if(igas.eq.igas_N2)then
172
173	interm = indv(nw,igas,igas)
174	! call interpolateN2N2(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
175	indv(nw,igas,igas) = interm
176	! only goes to 500 cm^-1, so unless we're around a cold brown dwarf, this is irrelevant in the visible
177
178	elseif(igas.eq.igas_H2)then
179
180	! first do self-induced absorption
181	interm = indv(nw,igas,igas)
182	call interpolateH2H2(wn_cont,T_cont,p_cont,dtemp,.false.,interm)
183	indv(nw,igas,igas) = interm
184
185	! then cross-interactions with other gases
186	do jgas=1,ngasmx
187	p_cross = dble(PMID(k)scalepgfrac(jgas)*(1.-QVAR(k)))
188	dtempc = 0.0
189	if(jgas.eq.igas_N2)then
190	interm = indv(nw,igas,jgas)
191	call interpolateN2H2(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm)
192	indv(nw,igas,jgas) = interm
193	! should be irrelevant in the visible
194	elseif(jgas.eq.igas_He)then
195	interm = indv(nw,igas,jgas)
196	call interpolateH2He(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm)
197	indv(nw,igas,jgas) = interm
198	endif
199	dtemp = dtemp + dtempc
200	enddo
201
202	elseif(igas.eq.igas_H2O.and.T_cont.gt.200.0)then
203
204	p_air = dble(PMID(k)*scalep) - p_cont ! note assumes background is air!
205	if(H2Ocont_simple)then
206	call interpolateH2Ocont_PPC(wn_cont,T_cont,p_cont,p_air,dtemp,.false.)
207	else
208	interm = indv(nw,igas,igas)
209	call interpolateH2Ocont_CKD(wn_cont,T_cont,p_cont,p_air,dtemp,.false.,interm)
210	indv(nw,igas,igas) = interm
211	endif
212
213	endif
214
215	DCONT = DCONT + dtemp
216
217	enddo
218
219	DCONT = DCONT*dz(k)
220
221	endif
222
223	do ng=1,L_NGAUSS-1
224
225	! Now compute TAUGAS
226
227	! Interpolate between water mixing ratios
228	! WRATIO = 0.0 if the requested water amount is equal to, or outside the
229	! the water data range
230
231	if(L_REFVAR.eq.1)then ! added by RW for special no variable case
232
233	! JVO 2017 : added tmpk because the repeated calls to gasi/v increased dramatically
234	! the execution time of optci/v -> ~ factor 2 on the whole radiative
235	! transfer on the tested simulations !
236
237	tmpk = GASV(MT(K):MT(K)+1,MP(K):MP(K)+1,1,NW,NG)
238
239	KCOEF(1) = tmpk(1,1) ! KCOEF(1) = GASV(MT(K),MP(K),1,NW,NG)
240	KCOEF(2) = tmpk(1,2) ! KCOEF(2) = GASV(MT(K),MP(K)+1,1,NW,NG)
241	KCOEF(3) = tmpk(2,2) ! KCOEF(3) = GASV(MT(K)+1,MP(K)+1,1,NW,NG)
242	KCOEF(4) = tmpk(2,1) ! KCOEF(4) = GASV(MT(K)+1,MP(K),1,NW,NG)
243
244	else
245
246	tmpkvar = GASV(MT(K):MT(K)+1,MP(K):MP(K)+1,NVAR(K):NVAR(K)+1,NW,NG)
247
248	KCOEF(1) = tmpkvar(1,1,1) + WRATIO(K) * &
249	( tmpkvar(1,1,2)-tmpkvar(1,1,1) )
250
251	KCOEF(2) = tmpkvar(1,2,1) + WRATIO(K) * &
252	( tmpkvar(1,2,2)-tmpkvar(1,2,1) )
253
254	KCOEF(3) = tmpkvar(2,2,1) + WRATIO(K) * &
255	( tmpkvar(2,2,2)-tmpkvar(2,2,1) )
256
257	KCOEF(4) = tmpkvar(2,1,1) + WRATIO(K) * &
258	( tmpkvar(2,1,2)-tmpkvar(2,1,1) )
259
260
261	endif
262
263	! Interpolate the gaseous k-coefficients to the requested T,P values
264
265	ANS = LKCOEF(K,1)KCOEF(1) + LKCOEF(K,2)KCOEF(2) + &
266	LKCOEF(K,3)KCOEF(3) + LKCOEF(K,4)KCOEF(4)
267
268	TAUGAS = U(k)*ANS
269
270	TAUGSURF(NW,NG) = TAUGSURF(NW,NG) + TAUGAS + DCONT
271	DTAUKV(K,nw,ng) = TAUGAS &
272	+ DRAYAER & ! DRAYAER includes all scattering contributions
273	+ DCONT ! For parameterized continuum aborption
274
275	end do
276
277	! Now fill in the "clear" part of the spectrum (NG = L_NGAUSS),
278	! which holds continuum opacity only
279
280	NG = L_NGAUSS
281	DTAUKV(K,nw,ng) = DRAYAER + DCONT ! Scattering + parameterized continuum absorption
282
283	end do
284	end do
285
286
287	!=======================================================================
288	! Now the full treatment for the layers, where besides the opacity
289	! we need to calculate the scattering albedo and asymmetry factors
290
291	do iaer=1,naerkind
292	DO NW=1,L_NSPECTV
293	DO K=2,L_LEVELS
294	TAUAEROLK(K,NW,IAER) = TAUAERO(K,IAER) * QSVAER(K,NW,IAER) ! effect of scattering albedo
295	ENDDO
296	ENDDO
297	end do
298
299	DO NW=1,L_NSPECTV
300	DO L=1,L_NLAYRAD-1
301	K = 2*L+1
302	atemp(L,NW) = SUM(GVAER(K,NW,1:naerkind) * TAUAEROLK(K,NW,1:naerkind))+SUM(GVAER(K+1,NW,1:naerkind) * TAUAEROLK(K+1,NW,1:naerkind))
303	btemp(L,NW) = SUM(TAUAEROLK(K,NW,1:naerkind)) + SUM(TAUAEROLK(K+1,NW,1:naerkind))
304	ctemp(L,NW) = btemp(L,NW) + 0.9999*(TRAY(K,NW) + TRAY(K+1,NW)) ! JVO 2017 : does this 0.999 is really meaningful ?
305	btemp(L,NW) = btemp(L,NW) + TRAY(K,NW) + TRAY(K+1,NW)
306	COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW)
307	END DO ! L vertical loop
308
309	! Last level
310	L = L_NLAYRAD
311	K = 2*L+1
312	atemp(L,NW) = SUM(GVAER(K,NW,1:naerkind) * TAUAEROLK(K,NW,1:naerkind))
313	btemp(L,NW) = SUM(TAUAEROLK(K,NW,1:naerkind))
314	ctemp(L,NW) = btemp(L,NW) + 0.9999*TRAY(K,NW) ! JVO 2017 : does this 0.999 is really meaningful ?
315	btemp(L,NW) = btemp(L,NW) + TRAY(K,NW)
316	COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW)
317
318
319	END DO ! NW spectral loop
320
321	DO NG=1,L_NGAUSS
322	DO NW=1,L_NSPECTV
323	DO L=1,L_NLAYRAD-1
324
325	K = 2*L+1
326	DTAUV(L,nw,ng) = DTAUKV(K,NW,NG) + DTAUKV(K+1,NW,NG)
327	WBARV(L,nw,ng) = ctemp(L,NW) / DTAUV(L,nw,ng)
328
329	END DO ! L vertical loop
330
331	! Last level
332
333	L = L_NLAYRAD
334	K = 2*L+1
335	DTAUV(L,nw,ng) = DTAUKV(K,NW,NG)
336
337	WBARV(L,NW,NG) = ctemp(L,NW) / DTAUV(L,NW,NG)
338
339	END DO ! NW spectral loop
340	END DO ! NG Gauss loop
341
342	! Total extinction optical depths
343
344	DO NG=1,L_NGAUSS ! full gauss loop
345	DO NW=1,L_NSPECTV
346	TAUV(1,NW,NG)=0.0D0
347	DO L=1,L_NLAYRAD
348	TAUV(L+1,NW,NG)=TAUV(L,NW,NG)+DTAUV(L,NW,NG)
349	END DO
350
351	TAUCUMV(1,NW,NG)=0.0D0
352	DO K=2,L_LEVELS
353	TAUCUMV(K,NW,NG)=TAUCUMV(K-1,NW,NG)+DTAUKV(K,NW,NG)
354	END DO
355	END DO
356	END DO ! end full gauss loop
357
358
359	return
360
361
362	end subroutine optcv

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