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moistadj.F90 @ 374

Last change on this file since 374 was 253, checked in by emillour, 13 years ago

Generic GCM

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1	subroutine moistadj(t, pq, pplev, pplay, dtmana, dqmana, ptimestep, rneb)
2
3	use watercommon_h, only: To, RLVTT, RCPD
4
5	implicit none
6
7
8	!=====================================================================
9	!
10	! Purpose
11	! -------
12	! Calculates moist convective adjustment by the method of Manabe.
13	!
14	! Authors
15	! -------
16	! Adapted from the LMDTERRE code by R. Wordsworth (2010)
17	! Original author Z. X. Li (1993)
18	!
19	!=====================================================================
20
21	#include "dimensions.h"
22	#include "dimphys.h"
23	#include "tracer.h"
24	#include "comcstfi.h"
25
26	! Pre-arguments (for universal model)
27	real pq(ngridmx,nlayermx,nqmx) ! tracer (kg/kg)
28	REAL pdq(ngridmx,nlayermx,nqmx)
29
30	real dqmana(ngridmx,nlayermx,nqmx) ! tendency of tracers (kg/kg.s-1)
31	REAL dtmana(ngridmx,nlayermx) ! temperature increment
32
33	! Arguments
34	REAL t(ngridmx,nlayermx) ! temperature (K)
35	REAL q(ngridmx,nlayermx) ! humidite specifique (kg/kg)
36	REAL pplev(ngridmx,nlayermx+1) ! pression a inter-couche (Pa)
37	REAL pplay(ngridmx,nlayermx) ! pression au milieu de couche (Pa)
38
39	REAL d_t(ngridmx,nlayermx) ! temperature increment
40	REAL d_q(ngridmx,nlayermx) ! incrementation pour vapeur d'eau
41	REAL d_ql(ngridmx,nlayermx) ! incrementation pour l'eau liquide
42	REAL rneb(ngridmx,nlayermx) ! cloud fraction
43	REAL ptimestep
44
45	! REAL t_coup
46	! PARAMETER (t_coup=234.0)
47	REAL seuil_vap
48	PARAMETER (seuil_vap=1.0E-10)
49
50	! Local variables
51	INTEGER i, k, iq
52	INTEGER k1, k1p, k2, k2p
53	LOGICAL itest(ngridmx)
54	REAL delta_q(ngridmx, nlayermx)
55	REAL cp_new_t(nlayermx)
56	REAL cp_delta_t(nlayermx)
57	REAL new_qb(nlayermx)
58	REAL v_cptj(nlayermx), v_cptjk1, v_ssig
59	REAL v_cptt(ngridmx,nlayermx), v_p, v_t
60	REAL v_qs(ngridmx,nlayermx), v_qsd(ngridmx,nlayermx)
61	REAL zq1(ngridmx), zq2(ngridmx)
62	REAL gamcpdz(ngridmx,2:nlayermx)
63	REAL zdp, zdpm
64
65	REAL zsat ! super-saturation
66	REAL zflo ! flotabilite
67
68	REAL local_q(ngridmx,nlayermx),local_t(ngridmx,nlayermx)
69
70	REAL zdelta, zcor, zcvm5
71
72	REAL dEtot, dqtot, masse ! conservation diagnostics
73	real dL1tot, dL2tot
74
75	! Indices of water vapour and water ice tracers
76	INTEGER,SAVE :: i_h2o=0 ! water vapour
77	INTEGER,SAVE :: i_ice=0 ! water ice
78
79	LOGICAL firstcall
80	SAVE firstcall
81
82	DATA firstcall /.TRUE./
83
84	IF (firstcall) THEN
85
86	i_h2o=igcm_h2o_vap
87	i_ice=igcm_h2o_ice
88
89	write(,) "rain: i_ice=",i_ice
90	write(,) " i_h2o=",i_h2o
91
92	firstcall = .FALSE.
93	ENDIF
94
95	! GCM -----> subroutine variables
96	DO k = 1, nlayermx
97	DO i = 1, ngridmx
98
99	q(i,k) = pq(i,k,i_h2o)
100
101	if(q(i,k).lt.0.)then
102	q(i,k)=0.0
103	endif
104	DO iq = 1, nqmx
105	dqmana(i,k,iq)=0.0
106	ENDDO
107	ENDDO
108	ENDDO
109
110	DO k = 1, nlayermx
111	DO i = 1, ngridmx
112	local_q(i,k) = q(i,k)
113	local_t(i,k) = t(i,k)
114	rneb(i,k) = 0.0
115	d_ql(i,k) = 0.0
116	d_t(i,k) = 0.0
117	d_q(i,k) = 0.0
118	ENDDO
119	new_qb(k)=0.0
120	ENDDO
121
122	! Calculate v_cptt
123	DO k = 1, nlayermx
124	DO i = 1, ngridmx
125	v_cptt(i,k) = RCPD * local_t(i,k)
126	ENDDO
127	ENDDO
128
129	DO k = 1, nlayermx
130	DO i = 1, ngridmx
131	v_cptt(i,k) = RCPD * local_t(i,k)
132	v_t = local_t(i,k)
133	v_p = pplay(i,k)
134
135	call watersat(v_t,v_p,v_qs(i,k))
136	call watersat_grad(v_t,v_qs(i,k),v_qsd(i,k))
137	ENDDO
138	ENDDO
139
140	! TEST: RH DIAGNOSTIC
141	! DO k = 1, nlayermx
142	! DO i = 1, ngridmx
143	! v_t = local_t(i,k)
144	! IF (v_t.LT.To) THEN
145	! print*,'RHs=',q(i,k) / v_qs(i,k)
146	! ELSE
147	! print*,'RHl=',q(i,k) / v_qs(i,k)
148	! ENDIF
149	! ENDDO
150	! ENDDO
151
152	! Calculate Gamma * Cp * dz: (gamma is the critical gradient)
153	DO k = 2, nlayermx
154	DO i = 1, ngridmx
155	zdp = pplev(i,k)-pplev(i,k+1)
156	zdpm = pplev(i,k-1)-pplev(i,k)
157	! gamcpdz(i,k) = ( ( RD/RCPD /(zdpm+zdp) *
158	gamcpdz(i,k) = ( ( R/RCPD /(zdpm+zdp) * &
159	(v_cptt(i,k-1)zdpm + v_cptt(i,k)zdp) &
160	+RLVTT /(zdpm+zdp) * &
161	(v_qs(i,k-1)zdpm + v_qs(i,k)zdp) &
162	)* (pplay(i,k-1)-pplay(i,k)) / pplev(i,k) ) &
163	/ (1.0+(v_qsd(i,k-1)*zdpm+ &
164	v_qsd(i,k)*zdp)/(zdpm+zdp) )
165	ENDDO
166	ENDDO
167
168	!------------------------------------ modification of unstable profile
169	DO 9999 i = 1, ngridmx
170	itest(i) = .FALSE.
171
172	! print*,'we in the loop'
173	! stop
174
175	k1 = 0
176	k2 = 1
177
178	810 CONTINUE ! look for k1, the base of the column
179	k2 = k2 + 1
180	IF (k2 .GT. nlayermx) GOTO 9999
181	zflo = v_cptt(i,k2-1) - v_cptt(i,k2) - gamcpdz(i,k2)
182	zsat=(local_q(i,k2-1)-v_qs(i,k2-1))*(pplev(i,k2-1)-pplev(i,k2)) &
183	+(local_q(i,k2)-v_qs(i,k2))*(pplev(i,k2)-pplev(i,k2+1))
184
185	IF ( zflo.LE.0.0 .OR. zsat.LE.0.0 ) GOTO 810
186	k1 = k2 - 1
187	itest(i) = .TRUE.
188
189	820 CONTINUE !! look for k2, the top of the column
190	IF (k2 .EQ. nlayermx) GOTO 821
191	k2p = k2 + 1
192	zsat=zsat+(pplev(i,k2p)-pplev(i,k2p+1))*(local_q(i,k2p)-v_qs(i,k2p))
193	zflo = v_cptt(i,k2p-1) - v_cptt(i,k2p) - gamcpdz(i,k2p)
194
195	IF (zflo.LE.0.0 .OR. zsat.LE.0.0) GOTO 821
196	k2 = k2p
197	GOTO 820
198	821 CONTINUE
199
200	!------------------------------------------------------ local adjustment
201	830 CONTINUE ! actual adjustment
202	v_cptj(k1) = 0.0
203	zdp = pplev(i,k1)-pplev(i,k1+1)
204	v_cptjk1 = ( (1.0+v_qsd(i,k1))*(v_cptt(i,k1)+v_cptj(k1)) &
205	+ RLVTT(local_q(i,k1)-v_qs(i,k1)) ) zdp
206	v_ssig = zdp * (1.0+v_qsd(i,k1))
207
208	k1p = k1 + 1
209	DO k = k1p, k2
210	zdp = pplev(i,k)-pplev(i,k+1)
211	v_cptj(k) = v_cptj(k-1) + gamcpdz(i,k)
212	v_cptjk1 = v_cptjk1 + zdp &
213	* ( (1.0+v_qsd(i, k))*(v_cptt(i,k)+v_cptj(k)) &
214	+ RLVTT*(local_q(i,k)-v_qs(i,k)) )
215	v_ssig = v_ssig + zdp *(1.0+v_qsd(i,k))
216	ENDDO
217
218
219	! this right here is where the adjustment is done???
220	DO k = k1, k2
221	cp_new_t(k) = v_cptjk1/v_ssig - v_cptj(k)
222	cp_delta_t(k) = cp_new_t(k) - v_cptt(i,k)
223	new_qb(k) = v_qs(i,k) + v_qsd(i,k)*cp_delta_t(k)/RLVTT
224	local_q(i,k) = new_qb(k)
225	local_t(i,k) = cp_new_t(k) / RCPD
226
227	! print*,'v_qs in loop=',v_qs
228	! print*,'v_qsd in loop=',v_qsd
229	! print*,'new_qb in loop=',new_qb
230	! print*,'cp_delta_t in loop=',cp_delta_t
231	ENDDO
232
233
234	!--------------------------------------------------- sounding downwards
235	! -- we refine the prognostic variables in
236	! -- the layer about to be adjusted
237
238	DO k = k1, k2
239	v_cptt(i,k) = RCPD * local_t(i,k)
240	v_t = local_t(i,k)
241	v_p = pplay(i,k)
242
243	! IF (v_t.LT.t_coup) THEN
244	! v_qs(i,k) = qsats(v_t) / v_p
245	! v_qsd(i,k) = dqsats(v_t,v_qs(i,k))
246	! ELSE
247	! v_qs(i,k) = qsatl(v_t) / v_p
248	! v_qsd(i,k) = dqsatl(v_t,v_qs(i,k))
249	! ENDIF
250
251	call watersat(v_t,v_p,v_qs(i,k))
252	call watersat_grad(v_t,v_qs(i,k),v_qsd(i,k))
253
254	ENDDO
255	DO k = 2, nlayermx
256	zdpm = pplev(i,k-1) - pplev(i,k)
257	zdp = pplev(i,k) - pplev(i,k+1)
258	! gamcpdz(i,k) = ( ( RD/RCPD /(zdpm+zdp) *
259	gamcpdz(i,k) = ( ( R/RCPD /(zdpm+zdp) * &
260	(v_cptt(i,k-1)zdpm+v_cptt(i,k)zdp) &
261	+RLVTT /(zdpm+zdp) * &
262	(v_qs(i,k-1)zdpm+v_qs(i,k)zdp) &
263	)* (pplay(i,k-1)-pplay(i,k)) / pplev(i,k) ) &
264	/ (1.0+(v_qsd(i,k-1)zdpm+v_qsd(i,k)zdp) &
265	/(zdpm+zdp) )
266	ENDDO
267
268	! Test to see if we've reached the bottom
269
270	IF (k1 .EQ. 1) GOTO 841 ! yes we have!
271	zflo = v_cptt(i,k1-1) - v_cptt(i,k1) - gamcpdz(i,k1)
272	zsat=(local_q(i,k1-1)-v_qs(i,k1-1))*(pplev(i,k1-1)-pplev(i,k1)) &
273	+ (local_q(i,k1)-v_qs(i,k1))*(pplev(i,k1)-pplev(i,k1+1))
274	IF (zflo.LE.0.0 .OR. zsat.LE.0.0) GOTO 841 ! yes we have!
275
276	840 CONTINUE
277	k1 = k1 - 1
278	IF (k1 .EQ. 1) GOTO 830 ! GOTO 820 (a tester, Z.X.Li, mars 1995)
279	zsat = zsat + (local_q(i,k1-1)-v_qs(i,k1-1)) &
280	*(pplev(i,k1-1)-pplev(i,k1))
281	zflo = v_cptt(i,k1-1) - v_cptt(i,k1) - gamcpdz(i,k1)
282	IF (zflo.GT.0.0 .AND. zsat.GT.0.0) THEN
283	GOTO 840
284	ELSE
285	GOTO 830 ! GOTO 820 (a tester, Z.X.Li, mars 1995)
286	ENDIF
287	841 CONTINUE
288
289	GOTO 810 ! look for other layers higher up
290
291	9999 CONTINUE ! loop over all the points
292
293	! print*,'k1=',k1
294	! print*,'k2=',k2
295
296	! print*,'local_t=',local_t
297	! print*,'v_cptt=',v_cptt
298	! print*,'gamcpdz=',gamcpdz
299
300	!-----------------------------------------------------------------------
301	! Determine the cloud fraction (hypothese: la nebulosite a lieu
302	! a l'endroit ou la vapeur d'eau est diminuee par l'ajustement):
303
304	DO k = 1, nlayermx
305	DO i = 1, ngridmx
306	IF (itest(i)) THEN
307	delta_q(i,k) = local_q(i,k) - q(i,k)
308	IF (delta_q(i,k).LT.0.) rneb(i,k) = 1.0
309	ENDIF
310	ENDDO
311	ENDDO
312
313	! Distribuer l'eau condensee en eau liquide nuageuse (hypothese:
314	! l'eau liquide est distribuee aux endroits ou la vapeur d'eau
315	! diminue et d'une maniere proportionnelle a cet diminution):
316
317	DO i = 1, ngridmx
318	IF (itest(i)) THEN
319	zq1(i) = 0.0
320	zq2(i) = 0.0
321	ENDIF
322	ENDDO
323	DO k = 1, nlayermx
324	DO i = 1, ngridmx
325	IF (itest(i)) THEN
326	zdp = pplev(i,k)-pplev(i,k+1)
327	zq1(i) = zq1(i) - delta_q(i,k) * zdp
328	zq2(i) = zq2(i) - MIN(0.0, delta_q(i,k)) * zdp
329	ENDIF
330	ENDDO
331	ENDDO
332	DO k = 1, nlayermx
333	DO i = 1, ngridmx
334	IF (itest(i)) THEN
335	IF (zq2(i).NE.0.0) &
336	d_ql(i,k) = - MIN(0.0,delta_q(i,k))*zq1(i)/zq2(i)
337	ENDIF
338	ENDDO
339	ENDDO
340
341	! print*,'local_q BEFORE=',local_q
342
343	DO k = 1, nlayermx
344	DO i = 1, ngridmx
345	local_q(i, k) = MAX(local_q(i, k), seuil_vap)
346	ENDDO
347	ENDDO
348
349	DO k = 1, nlayermx
350	DO i = 1, ngridmx
351	d_t(i,k) = local_t(i,k) - t(i,k)
352	d_q(i,k) = local_q(i,k) - q(i,k)
353	ENDDO
354	ENDDO
355
356	! now subroutine -----> GCM variables
357	DO k = 1, nlayermx
358	DO i = 1, ngridmx
359
360	dtmana(i,k) = d_t(i,k)/ptimestep
361	dqmana(i,k,i_h2o) = d_q(i,k)/ptimestep
362	dqmana(i,k,i_ice) = d_ql(i,k)/ptimestep
363
364	ENDDO
365	ENDDO
366
367	! print*,'IN MANABE:'
368	! print*,'pplev=',pplev
369	! print*,'t=',t
370	! print*,'d_t=',d_t
371	! print*,'d_q=',d_q
372	! print*,'local_q=',local_q
373	! print*,'q=',q
374	! print*,'v_qs(i,k)=',v_qs
375	! print*,'v_qsd(i,k)=',v_qsd
376	! print*,'cp_delta_t(k)=',cp_delta_t
377
378	! print*,'d_ql=',d_ql
379	! print*,'delta_q=',delta_q
380	! print*,'zq1=',zq1
381	! print*,'zq2=',zq2
382	!! print*,'i_h2o=',i_h2o
383	! print*,'i_ice=',i_ice
384	!
385	! print*,'IN MANABE:'
386	! print*,'d_q=',d_q
387	! print*,'d_ql=',d_ql
388	! print*,'dtmana=',d_t
389	! stop
390	! print*,'gamcpdz at end=',gamcpdz
391	! stop
392
393	! Some conservation diagnostics...
394	! dEtot=0.0
395	! dL1tot=0.0
396	! dL2tot=0.0
397	! dqtot=0.0
398	! masse=0.0
399	! DO k = 1, nlayermx
400	! DO i = 1, ngridmx
401	!
402	! masse = (pplev(i,k) - pplev(i,k+1))/g
403	!
404	! dEtot = dEtot + cppd_t(i,k)masse
405	! dL1tot = dL1tot + RLVTTd_ql(i,k)masse
406	! dL2tot = dL2tot + RLVTTd_q(i,k)masse ! is this line necessary?
407	!
408	! dqtot = dqtot + (d_q(i,k) + d_ql(i,k))*masse
409	!
410	! ENDDO
411	! ENDDO
412
413	! print*,'In manabe energy change=',dEtot
414	! print*,'In manabe condense energy change 1 =',dL1tot
415	! print*,'In manabe condense energy change 2 =',dL2tot
416	! print*,'In manabe water change=',dqtot
417
418	RETURN
419	END

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