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optci.F90 @ 486

Last change on this file since 486 was 471, checked in by aslmd, 13 years ago

LMDZ.GENERIC

13/12/2011 == AS

Same spirit as previous commit, but for ngasmx which is now read in gases.def -- before arrays w/ dim ngasmx are allocated dynamically
Allocation is done in su_gases.F90 which is called in inifis
Outside su_gases.F90, very few modifications to the code : the new module "gases_h.F90" simply replaces the old common "gases.h" !
Compiles fine. Tested with debugging options through pgdbg. Runs fine. Exact same results in Early Mars test case.

File size: 11.4 KB

Line
1	subroutine optci(PLEV,TLEV,DTAUI,TAUCUMI, &
2	QXIAER,QSIAER,GIAER,COSBI,WBARI,TAUAERO, &
3	TMID,PMID,TAUGSURF,QVAR,MUVAR)
4
5	use radinc_h
6	use radcommon_h, only: gasi, tlimit, wrefVAR, Cmk,tgasref,pfgasref,wnoi,scalep
7	use gases_h
8	implicit none
9
10	!==================================================================
11	!
12	! Purpose
13	! -------
14	! Calculates longwave optical constants at each level. For each
15	! layer and spectral interval in the IR it calculates WBAR, DTAU
16	! and COSBAR. For each level it calculates TAU.
17	!
18	! TAUI(L,LW) is the cumulative optical depth at level L (or alternatively
19	! at the bottom of layer L), LW is the spectral wavelength interval.
20	!
21	! TLEV(L) - Temperature at the layer boundary (i.e., level)
22	! PLEV(L) - Pressure at the layer boundary (i.e., level)
23	!
24	! Authors
25	! -------
26	! Adapted from the NASA Ames code by R. Wordsworth (2009)
27	!
28	!==================================================================
29
30
31	#include "comcstfi.h"
32	#include "callkeys.h"
33
34
35	real*8 DTAUI(L_NLAYRAD,L_NSPECTI,L_NGAUSS)
36	real*8 DTAUKI(L_LEVELS+1,L_NSPECTI,L_NGAUSS)
37	real*8 TAUI(L_NLEVRAD,L_NSPECTI,L_NGAUSS)
38	real*8 TAUCUMI(L_LEVELS,L_NSPECTI,L_NGAUSS)
39	real*8 PLEV(L_LEVELS)
40	real*8 TLEV(L_LEVELS)
41	real*8 TMID(L_LEVELS), PMID(L_LEVELS)
42	real*8 COSBI(L_NLAYRAD,L_NSPECTI,L_NGAUSS)
43	real*8 WBARI(L_NLAYRAD,L_NSPECTI,L_NGAUSS)
44
45	! For aerosols
46	real*8 QXIAER(L_LEVELS+1,L_NSPECTI,NAERKIND)
47	real*8 QSIAER(L_LEVELS+1,L_NSPECTI,NAERKIND)
48	real*8 GIAER(L_LEVELS+1,L_NSPECTI,NAERKIND)
49	real*8 TAUAERO(L_LEVELS+1,NAERKIND)
50	real*8 TAUAEROLK(L_LEVELS+1,L_NSPECTI,NAERKIND)
51	real*8 TAEROS(L_LEVELS,L_NSPECTI,NAERKIND)
52
53	integer L, NW, NG, K, LK, IAER
54	integer MT(L_LEVELS), MP(L_LEVELS), NP(L_LEVELS)
55	real*8 ANS, TAUGAS
56	real*8 DPR(L_LEVELS), U(L_LEVELS)
57	real*8 LCOEF(4), LKCOEF(L_LEVELS,4)
58
59	real*8 taugsurf(L_NSPECTI,L_NGAUSS-1)
60	real*8 DCONT
61	double precision wn_cont, p_cont, p_air, T_cont, dtemp
62
63	! Variable species mixing ratio variables
64	real*8 QVAR(L_LEVELS), WRATIO(L_LEVELS), MUVAR(L_LEVELS)
65	real*8 KCOEF(4)
66	integer NVAR(L_LEVELS)
67
68	! temporary variables for multiple aerosol calculation
69	real*8 atemp, btemp
70
71	! variables for k in units m^-1
72	real*8 rho, dz(L_LEVELS)
73
74	integer igas
75
76	!--- Kasting's CIA ----------------------------------------
77	!real*8, parameter :: Ci(L_NSPECTI)=[ &
78	! 3.8E-5, 1.2E-5, 2.8E-6, 7.6E-7, 4.5E-7, 2.3E-7, &
79	! 5.4E-7, 1.6E-6, 0.0, &
80	! 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &
81	! 0.0, 4.0E-7, 4.0E-6, 1.4E-5, &
82	! 1.0E-5, 1.2E-6, 2.0E-7, 5.0E-8, 3.0E-8, 0.0 ]
83	!real*8, parameter :: Ti(L_NSPECTI)=[ -2.2, -1.9, &
84	! -1.7, -1.7, -1.7, -1.7, -1.7, -1.7, &
85	! 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &
86	! -1.7,-1.7,-1.7,-1.7,-1.7,-1.7,-1.7, -1.7,0.0 ]
87	!----------------------------------------------------------
88
89	!=======================================================================
90	! Determine the total gas opacity throughout the column, for each
91	! spectral interval, NW, and each Gauss point, NG.
92
93	taugsurf(:,:) = 0.0
94	dpr(:) = 0.0
95	lkcoef(:,:) = 0.0
96
97	do K=2,L_LEVELS
98	DPR(k) = PLEV(K)-PLEV(K-1)
99
100	!--- Kasting's CIA ----------------------------------------
101	!dz(k)=dpr(k)189.02TMID(K)/(0.03720*PMID(K))
102	! this is CO2 path length (in cm) as written by Francois
103	! delta_z = delta_p * R_specific * T / (g * P)
104	! But Kasting states that W is in units of _atmosphere_ cm
105	! So we do
106	!dz(k)=dz(k)*(PMID(K)/1013.25)
107	!dz(k)=dz(k)/100.0 ! in m for SI calc
108	!----------------------------------------------------------
109
110	! if we have continuum opacities, we need dz
111	if(kastprof)then
112	dz(k) = dpr(k)(8314.5/muvar(k))TMID(K)/(g*PMID(K))
113	U(k) = (Cmkmugaz/(muvar(k)))DPR(k)
114	else
115	dz(k) = dpr(k)RTMID(K)/(g*PMID(K))
116	U(k) = Cmk*DPR(k) ! only Cmk line in optci.F
117	endif
118
119	call tpindex(PMID(K),TMID(K),QVAR(K),pfgasref,tgasref,WREFVAR, &
120	LCOEF,MT(K),MP(K),NVAR(K),WRATIO(K))
121
122	do LK=1,4
123	LKCOEF(K,LK) = LCOEF(LK)
124	end do
125
126
127	DO NW=1,L_NSPECTI
128	do iaer=1,naerkind
129	TAEROS(K,NW,IAER) = TAUAERO(K,IAER) * QXIAER(K,NW,IAER)
130	end do
131	END DO
132	end do ! levels
133
134	do K=2,L_LEVELS
135	do nw=1,L_NSPECTI
136
137	DCONT = 0.0 ! continuum absorption
138
139	! include continua if necessary
140	wn_cont = dble(wnoi(nw))
141	T_cont = dble(TMID(k))
142	do igas=1,ngasmx
143
144	if(gfrac(igas).eq.-1)then ! variable
145	p_cont = dble(PMID(k)scalepQVAR(k)) ! qvar = mol/mol
146	else
147	p_cont = dble(PMID(k)scalepgfrac(igas)*(1.-QVAR(k)))
148	endif
149
150	dtemp=0.0
151	if(gnom(igas).eq.'H2_')then
152	call interpolateH2H2(wn_cont,T_cont,p_cont,dtemp,.false.)
153	elseif(gnom(igas).eq.'H2O'.and.T_cont.gt.200.0)then
154	p_air = dble(PMID(k)*scalep) - p_cont ! note assumes air!!
155	call interpolateH2Ocont(wn_cont,T_cont,p_cont,p_air,dtemp,.false.)
156
157	endif
158
159	DCONT = DCONT + dtemp
160
161	enddo
162
163
164	DCONT = DCONT*dz(k)
165
166	!--- Kasting's CIA ----------------------------------------
167	!DCO2 = dz(k)Ci(nw)(1.2859PMID(k)/1000.0)(TMID(k)/300.)**Ti(nw)
168	!DCO2 = 130Ci(nw)(pmid(k)/1013.25)*2(tmid(k)/300.)*Ti(nw) dz(k)
169	! these two have been verified to give the same results
170	!----------------------------------------------------------
171
172
173	do ng=1,L_NGAUSS-1
174
175	! Now compute TAUGAS
176
177	! Interpolate between water mixing ratios
178	! WRATIO = 0.0 if the requested water amount is equal to, or outside the
179	! the water data range
180
181	if(L_REFVAR.eq.1)then ! added by RW for special no variable case
182	KCOEF(1) = GASI(MT(K),MP(K),1,NW,NG)
183	KCOEF(2) = GASI(MT(K),MP(K)+1,1,NW,NG)
184	KCOEF(3) = GASI(MT(K)+1,MP(K)+1,1,NW,NG)
185	KCOEF(4) = GASI(MT(K)+1,MP(K),1,NW,NG)
186	else
187
188	KCOEF(1) = GASI(MT(K),MP(K),NVAR(K),NW,NG) + WRATIO(K)* &
189	(GASI(MT(K),MP(K),NVAR(K)+1,NW,NG) - &
190	GASI(MT(K),MP(K),NVAR(K),NW,NG))
191
192	KCOEF(2) = GASI(MT(K),MP(K)+1,NVAR(K),NW,NG) + WRATIO(K)* &
193	(GASI(MT(K),MP(K)+1,NVAR(K)+1,NW,NG) - &
194	GASI(MT(K),MP(K)+1,NVAR(K),NW,NG))
195
196	KCOEF(3) = GASI(MT(K)+1,MP(K)+1,NVAR(K),NW,NG) + WRATIO(K)* &
197	(GASI(MT(K)+1,MP(K)+1,NVAR(K)+1,NW,NG) - &
198	GASI(MT(K)+1,MP(K)+1,NVAR(K),NW,NG))
199
200	KCOEF(4) = GASI(MT(K)+1,MP(K),NVAR(K),NW,NG) + WRATIO(K)* &
201	(GASI(MT(K)+1,MP(K),NVAR(K)+1,NW,NG) - &
202	GASI(MT(K)+1,MP(K),NVAR(K),NW,NG))
203	endif
204
205	! Interpolate the gaseous k-coefficients to the requested T,P values
206
207	ANS = LKCOEF(K,1)KCOEF(1) + LKCOEF(K,2)KCOEF(2) + &
208	LKCOEF(K,3)KCOEF(3) + LKCOEF(K,4)KCOEF(4)
209
210	TAUGAS = U(k)*ANS
211
212	if(graybody)then
213	TAUGAS = 0.0
214	DCONT = U(k)*3.3e-26
215	endif
216
217	TAUGSURF(NW,NG) = TAUGSURF(NW,NG) + TAUGAS + DCONT
218	!TAUGSURF(NW,NG) = TAUGSURF(NW,NG) + TAUGAS
219
220	DTAUKI(K,nw,ng) = TAUGAS + DCONT ! For parameterized continuum absorption
221
222	do iaer=1,naerkind
223	DTAUKI(K,nw,ng) = DTAUKI(K,nw,ng) + TAEROS(K,NW,IAER)
224	end do ! a bug was here!
225
226	end do
227
228	! Now fill in the "clear" part of the spectrum (NG = L_NGAUSS),
229	! which holds continuum opacity only
230
231	NG = L_NGAUSS
232	DTAUKI(K,nw,ng) = 0.0 + DCONT ! For parameterized continuum absorption
233
234	do iaer=1,naerkind
235	DTAUKI(K,nw,ng) = DTAUKI(K,nw,ng) + TAEROS(K,NW,IAER)
236	end do ! a bug was here!
237
238	end do
239	end do
240
241
242	!=======================================================================
243	! Now the full treatment for the layers, where besides the opacity
244	! we need to calculate the scattering albedo and asymmetry factors
245
246	DO NW=1,L_NSPECTI
247	DO K=2,L_LEVELS+1
248	do iaer=1,naerkind
249	TAUAEROLK(K,NW,IAER) = TAUAERO(K,IAER)*QSIAER(K,NW,IAER)
250	end do
251	ENDDO
252	ENDDO
253
254	DO NW=1,L_NSPECTI
255	NG = L_NGAUSS
256	DO L=1,L_NLAYRAD
257
258	K = 2*L+1
259	DTAUI(L,nw,ng) = DTAUKI(K,NW,NG) + DTAUKI(K+1,NW,NG)! + 1.e-50
260
261	atemp = 0.
262	btemp = 0.
263	if(DTAUI(L,NW,NG) .GT. 1.0E-9) then
264	do iaer=1,naerkind
265	atemp = atemp + &
266	GIAER(K,NW,IAER) * TAUAEROLK(K,NW,IAER) + &
267	GIAER(K+1,NW,IAER) * TAUAEROLK(K+1,NW,IAER)
268	btemp = btemp + TAUAEROLK(K,NW,IAER) + TAUAEROLK(K+1,NW,IAER)
269	! * + 1.e-10
270	end do
271	WBARI(L,nw,ng) = btemp / DTAUI(L,NW,NG)
272	else
273	WBARI(L,nw,ng) = 0.0D0
274	DTAUI(L,NW,NG) = 1.0E-9
275	endif
276
277	if(btemp .GT. 0.0) then
278	cosbi(L,NW,NG) = atemp/btemp
279	else
280	cosbi(L,NW,NG) = 0.0D0
281	end if
282
283	END DO ! L vertical loop
284
285	! Now the other Gauss points, if needed.
286
287	DO NG=1,L_NGAUSS-1
288	IF(TAUGSURF(NW,NG) .gt. TLIMIT) THEN
289
290	DO L=1,L_NLAYRAD
291	K = 2*L+1
292	DTAUI(L,nw,ng) = DTAUKI(K,NW,NG)+DTAUKI(K+1,NW,NG)! + 1.e-50
293
294	btemp = 0.
295	if(DTAUI(L,NW,NG) .GT. 1.0E-9) then
296
297	do iaer=1,naerkind
298	btemp = btemp + TAUAEROLK(K,NW,IAER) + TAUAEROLK(K+1,NW,IAER)
299	end do
300	WBARI(L,nw,ng) = btemp / DTAUI(L,NW,NG)
301
302	else
303	WBARI(L,nw,ng) = 0.0D0
304	DTAUI(L,NW,NG) = 1.0E-9
305	endif
306
307	cosbi(L,NW,NG) = cosbi(L,NW,L_NGAUSS)
308	END DO ! L vertical loop
309	END IF
310
311	END DO ! NG Gauss loop
312	END DO ! NW spectral loop
313
314	! Total extinction optical depths
315
316	DO NW=1,L_NSPECTI
317	DO NG=1,L_NGAUSS ! full gauss loop
318	TAUI(1,NW,NG)=0.0D0
319	DO L=1,L_NLAYRAD
320	TAUI(L+1,NW,NG)=TAUI(L,NW,NG)+DTAUI(L,NW,NG)
321	END DO
322
323	TAUCUMI(1,NW,NG)=0.0D0
324	DO K=2,L_LEVELS
325	TAUCUMI(K,NW,NG)=TAUCUMI(K-1,NW,NG)+DTAUKI(K,NW,NG)
326	END DO
327	END DO ! end full gauss loop
328	END DO
329
330	return
331
332
333	end subroutine optci
334
335
336

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