Context Navigation

watercloud_mod.F @ 2409

Last change on this file since 2409 was 2312, checked in by lrossi, 5 years ago

MARS GCM:
Implementation of HDO in the physics
New tracers hdo_vap and hdo_ice are added. Cf. traceur.def.isotopes in deftank for exemple of traceur.def.
All HDO related computations are activated by flag hdo=.true. in callphys.def. (see callphys.def.hdo in deftank for an example)
Additional option hdofrac (true by default) allows for turning on/off fractionation (for tests).
For now, only functional with simplified cloud scheme (so microphys=.false. and activice=.false. also recommended).
Initialisation of start files can be done with option 'inihdo' in newstart.
LR

File size: 26.3 KB

Line
1	MODULE watercloud_mod
2
3	IMPLICIT NONE
4
5	REAL,SAVE,ALLOCATABLE :: zdqcloud(:,:,:) ! tendencies on pq due to condensation of H2O(kg/kg.s-1)
6	REAL,SAVE,ALLOCATABLE :: zdqscloud(:,:) ! tendencies on qsurf (calculated only by calchim but declared here)
7
8	CONTAINS
9
10	SUBROUTINE watercloud(ngrid,nlay,ptimestep,
11	& pplev,pplay,pdpsrf,pzlay,pt,pdt,
12	& pq,pdq,pdqcloud,pdtcloud,
13	& nq,tau,tauscaling,rdust,rice,nuice,
14	& rsedcloud,rhocloud,totcloudfrac)
15	USE ioipsl_getin_p_mod, ONLY : getin_p
16	USE updaterad, ONLY: updaterdust, updaterice_micro,
17	& updaterice_typ
18	USE improvedclouds_mod, ONLY: improvedclouds
19	USE watersat_mod, ONLY: watersat
20	use tracer_mod, only: nqmx, igcm_h2o_vap, igcm_h2o_ice,
21	& igcm_hdo_vap, igcm_hdo_ice,
22	& igcm_dust_mass, igcm_dust_number,
23	& igcm_ccn_mass, igcm_ccn_number,
24	& rho_dust, nuice_sed, nuice_ref
25	use dimradmars_mod, only: naerkind
26	IMPLICIT NONE
27
28
29	c=======================================================================
30	c Water-ice cloud formation
31	c
32	c Includes two different schemes:
33	c - A simplified scheme (see simpleclouds.F)
34	c - An improved microphysical scheme (see improvedclouds.F)
35	c
36	c There is a time loop specific to cloud formation
37	c due to timescales smaller than the GCM integration timestep.
38	c
39	c Authors: Franck Montmessin, Francois Forget, Ehouarn Millour,
40	c J.-B. Madeleine, Thomas Navarro
41	c
42	c 2004 - 2012
43	c=======================================================================
44
45	c-----------------------------------------------------------------------
46	c declarations:
47	c -------------
48
49	include "callkeys.h"
50
51	c Inputs/outputs:
52	c ------
53
54	INTEGER, INTENT(IN) :: ngrid,nlay
55	INTEGER, INTENT(IN) :: nq ! nombre de traceurs
56	REAL, INTENT(IN) :: ptimestep ! pas de temps physique (s)
57	REAL, INTENT(IN) :: pplev(ngrid,nlay+1) ! pression aux inter-couches (Pa)
58	REAL, INTENT(IN) :: pplay(ngrid,nlay) ! pression au milieu des couches (Pa)
59	REAL, INTENT(IN) :: pdpsrf(ngrid) ! tendence surf pressure
60	REAL, INTENT(IN) :: pzlay(ngrid,nlay) ! altitude at the middle of the layers
61	REAL, INTENT(IN) :: pt(ngrid,nlay) ! temperature at the middle of the layers (K)
62	REAL, INTENT(IN) :: pdt(ngrid,nlay) ! tendence temperature des autres param.
63
64	REAL, INTENT(IN) :: pq(ngrid,nlay,nq) ! traceur (kg/kg)
65	rEAL, INTENT(IN) :: pdq(ngrid,nlay,nq) ! tendence avant condensation (kg/kg.s-1)
66
67	REAL, INTENT(IN) :: tau(ngrid,naerkind) ! Column dust optical depth at each point
68	REAL, INTENT(IN) :: tauscaling(ngrid) ! Convertion factor for dust amount
69	REAL, INTENT(INOUT) :: rdust(ngrid,nlay) ! Dust geometric mean radius (m)
70
71	REAL, INTENT(OUT) :: pdqcloud(ngrid,nlay,nq) ! tendence de la condensation H2O(kg/kg.s-1)
72	REAL, INTENT(OUT) :: pdtcloud(ngrid,nlay) ! tendence temperature due
73	! a la chaleur latente
74	REAL, INTENT(INOUT) :: rice(ngrid,nlay) ! Ice mass mean radius (m)
75	! (r_c in montmessin_2004)
76	REAL, INTENT(OUT) :: nuice(ngrid,nlay) ! Estimated effective variance
77	! of the size distribution
78	REAL, INTENT(OUT) :: rsedcloud(ngrid,nlay) ! Cloud sedimentation radius
79	REAL, INTENT(OUT) :: rhocloud(ngrid,nlay) ! Cloud density (kg.m-3)
80
81	REAL, INTENT(INOUT):: totcloudfrac(ngrid) ! Cloud fraction (A. Pottier 2013)
82
83	c Locals:
84	c ------
85
86	! for ice radius computation
87	REAL Mo,No
88	REAl ccntyp
89
90	! for time loop
91	INTEGER microstep ! time subsampling step variable
92	INTEGER,SAVE :: imicro ! time subsampling for coupled water microphysics & sedimentation
93	REAL,SAVE :: microtimestep ! integration timestep for coupled water microphysics & sedimentation
94	REAL,SAVE :: microtimestep_prev=-999
95
96	! tendency given by clouds (inside the micro loop)
97	REAL subpdqcloud(ngrid,nlay,nq) ! cf. pdqcloud
98	REAL subpdtcloud(ngrid,nlay) ! cf. pdtcloud
99
100	! global tendency (clouds+physics)
101	REAL sum_subpdq(ngrid,nlay,nq) ! cf. pdqcloud
102	REAL sum_subpdt(ngrid,nlay) ! cf. pdtcloud
103
104	! no supersaturation when option supersat is false
105	REAL zt(ngrid,nlay) ! local value of temperature
106	REAL zqsat(ngrid,nlay) ! saturation
107
108	INTEGER iq,ig,l
109	LOGICAL,SAVE :: firstcall=.true.
110
111	! Representation of sub-grid water ice clouds A. Pottier 2013
112	REAL :: ztclf(ngrid, nlay)
113	REAL :: zqclf(ngrid, nlay,nq)
114	REAL :: zdelt
115	REAL :: norm
116	REAL :: ponder
117	REAL :: tcond(ngrid,nlay)
118	REAL :: zqvap(ngrid,nlay)
119	REAL :: zqice(ngrid,nlay)
120	REAL :: spant ! delta T for the temperature distribution
121	! REAL :: zqsat(ngrid,nlay) ! saturation
122	REAL :: pteff(ngrid, nlay)! effective temperature in the cloud,neb
123	REAL :: pqeff(ngrid, nlay, nq)! effective tracers quantities in the cloud
124	REAL :: cloudfrac(ngrid,nlay) ! cloud fraction
125	REAL :: mincloud ! min cloud frac
126	LOGICAL, save :: flagcloud=.true.
127
128	c ** un petit test de coherence
129	c --------------------------
130
131	IF (firstcall) THEN
132
133	if (nq.gt.nqmx) then
134	write(,) 'stop in watercloud (nq.gt.nqmx)!'
135	write(,) 'nq=',nq,' nqmx=',nqmx
136	call abort_physic("watercloud","nq.gt.nqmx",1)
137	endif
138
139	write(,) "watercloud: igcm_h2o_vap=",igcm_h2o_vap
140	write(,) " igcm_h2o_ice=",igcm_h2o_ice
141
142	write(,) "time subsampling for microphysic ?"
143	#ifdef MESOSCALE
144	imicro = 2
145	#else
146	imicro = 30
147	#endif
148	call getin_p("imicro",imicro)
149	write(,)"watercloud: imicro = ",imicro
150
151	firstcall=.false.
152	ENDIF ! of IF (firstcall)
153
154	!! AS: moved out of firstcall to allow nesting+evoluting timestep
155	!! TBD: consider possible diff imicro with domains?
156	microtimestep = ptimestep/real(imicro)
157	if (microtimestep/=microtimestep_prev) then
158	! only tell the world if microtimestep has changed
159	write(,)"watercloud: Physical timestep is ",ptimestep
160	write(,)"watercloud: Microphysics timestep is ",microtimestep
161	microtimestep_prev=microtimestep
162	endif
163
164	c-----Initialization
165	sum_subpdq(1:ngrid,1:nlay,1:nq) = 0
166	sum_subpdt(1:ngrid,1:nlay) = 0
167
168	! default value if no ice
169	rhocloud(1:ngrid,1:nlay) = rho_dust
170
171	c-------------------------------------------------------------------
172	c 0. Representation of sub-grid water ice clouds
173	c------------------
174	c-----Initialization
175	pteff(1:ngrid,1:nlay) = 0
176	pqeff(1:ngrid,1:nlay,1:nq) = 0
177	DO l=1,nlay
178	DO ig=1,ngrid
179	pteff(ig,l)=pt(ig,l)
180	END DO
181	END DO
182	DO l=1,nlay
183	DO ig=1,ngrid
184	DO iq=1,nq
185	pqeff(ig,l,iq)=pq(ig,l,iq)
186	ENDDO
187	ENDDO
188	ENDDO
189	c-----Tendencies
190	DO l=1,nlay
191	DO ig=1,ngrid
192	ztclf(ig,l)=pt(ig,l)+ pdt(ig,l)*ptimestep
193	ENDDO
194	ENDDO
195	DO l=1,nlay
196	DO ig=1,ngrid
197	DO iq=1,nq
198	zqclf(ig,l,iq)=pq(ig,l,iq)+pdq(ig,l,iq)*ptimestep
199	ENDDO
200	ENDDO
201	ENDDO
202	c-----Effective temperature calculation
203	IF (CLFvarying) THEN
204	spant=3.0 ! delta T for the temprature distribution
205	mincloud=0.1 ! min cloudfrac when there is ice
206	IF (flagcloud) THEN
207	write(,) "Delta T", spant
208	write(,) "mincloud", mincloud
209	flagcloud=.false.
210	END IF
211	!CALL watersat(ngrid*nlay,ztclf,pplay,zqsat) !MV17: we dont need zqsat in the CLFvarying scheme
212	zqvap=zqclf(:,:,igcm_h2o_vap)
213	zqice=zqclf(:,:,igcm_h2o_ice)
214	CALL tcondwater(ngrid*nlay,pplay,zqvap+zqice,tcond)
215	DO l=1,nlay
216	DO ig=1,ngrid
217	zdelt=spant !MAX(spant*ztclf(ig,l),1.e-12), now totally in K. Fixed width
218	IF (tcond(ig,l) .ge. (ztclf(ig,l)+zdelt)) THEN
219	pteff(ig,l)=ztclf(ig,l)
220	cloudfrac(ig,l)=1.
221	ELSE IF (tcond(ig,l) .le. (ztclf(ig,l)-zdelt)) THEN
222	pteff(ig,l)=ztclf(ig,l)-zdelt
223	cloudfrac(ig,l)=mincloud
224	ELSE
225	cloudfrac(ig,l)=(tcond(ig,l)-ztclf(ig,l)+zdelt)/
226	& (2.0*zdelt)
227	pteff(ig,l)=(tcond(ig,l)+ztclf(ig,l)-zdelt)/2.
228	END IF
229	pteff(ig,l)=pteff(ig,l)-pdt(ig,l)*ptimestep
230	IF (cloudfrac(ig,l).le.mincloud) THEN !MV17: replaced .le.0 by .le.mincloud
231	cloudfrac(ig,l)=mincloud
232	ELSE IF (cloudfrac(ig,l).gt.1) THEN
233	cloudfrac(ig,l)=1.
234	END IF
235	ENDDO
236	ENDDO
237	c-----Calculation of the total cloud coverage of the column
238	DO ig=1,ngrid
239	totcloudfrac(ig) = 0.
240	norm=0.
241	DO l=1,nlay
242	ponder=zqice(ig,l)*(pplev(ig,l) - pplev(ig,l+1))
243	totcloudfrac(ig) = totcloudfrac(ig)
244	& + cloudfrac(ig,l)*ponder
245	norm=norm+ponder
246	ENDDO
247	totcloudfrac(ig)=MAX(totcloudfrac(ig)/norm,1.e-12) ! min value if NaNs
248	ENDDO
249	c-----Effective tracers quantities in the cloud fraction
250	IF (microphys) THEN
251	pqeff(:,:,igcm_ccn_mass)=pq(:,:,igcm_ccn_mass)/
252	& cloudfrac(:,:)
253	pqeff(:,:,igcm_ccn_number)=pq(:,:,igcm_ccn_number)/
254	& cloudfrac(:,:)
255	END IF ! end if (microphys)
256	pqeff(:,:,igcm_h2o_ice)=pq(:,:,igcm_h2o_ice)/
257	& cloudfrac(:,:)
258	!! CLFvarying outputs
259	CALL WRITEDIAGFI(ngrid,'pqeffice','pqeffice',
260	& 'kg/kg',3,pqeff(:,:,igcm_h2o_ice))
261	CALL WRITEDIAGFI(ngrid,'pteff','pteff',
262	& 'K',3,pteff(:,:))
263	CALL WRITEDIAGFI(ngrid,'tcond','tcond',
264	& 'K',3,tcond(:,:))
265	CALL WRITEDIAGFI(ngrid,'cloudfrac','cloudfrac',
266	& 'K',3,cloudfrac(:,:))
267	END IF ! end if (CLFvarying)
268	c------------------------------------------------------------------
269	c Time subsampling for microphysics
270	c------------------------------------------------------------------
271	rhocloud(1:ngrid,1:nlay) = rho_dust
272	DO microstep=1,imicro
273
274	c-------------------------------------------------------------------
275	c 1. Tendencies:
276	c------------------
277
278
279	c------ Temperature tendency subpdt
280	! Each microtimestep we give the cloud scheme a stepped entry subpdt instead of pdt
281	! If imicro=1 subpdt is the same as pdt
282	DO l=1,nlay
283	DO ig=1,ngrid
284	sum_subpdt(ig,l) = sum_subpdt(ig,l)
285	& + pdt(ig,l) ! At each micro timestep we add pdt in order to have a stepped entry
286	ENDDO
287	ENDDO
288	c------ Tracers tendencies subpdq are additionned
289	c------ At each micro timestep we add pdq in order to have a stepped entry
290	IF (microphys) THEN
291	DO l=1,nlay
292	DO ig=1,ngrid
293	sum_subpdq(ig,l,igcm_dust_mass) =
294	& sum_subpdq(ig,l,igcm_dust_mass)
295	& + pdq(ig,l,igcm_dust_mass)
296	sum_subpdq(ig,l,igcm_dust_number) =
297	& sum_subpdq(ig,l,igcm_dust_number)
298	& + pdq(ig,l,igcm_dust_number)
299	sum_subpdq(ig,l,igcm_ccn_mass) =
300	& sum_subpdq(ig,l,igcm_ccn_mass)
301	& + pdq(ig,l,igcm_ccn_mass)
302	sum_subpdq(ig,l,igcm_ccn_number) =
303	& sum_subpdq(ig,l,igcm_ccn_number)
304	& + pdq(ig,l,igcm_ccn_number)
305	ENDDO
306	ENDDO
307	ENDIF
308	DO l=1,nlay
309	DO ig=1,ngrid
310	sum_subpdq(ig,l,igcm_h2o_ice) =
311	& sum_subpdq(ig,l,igcm_h2o_ice)
312	& + pdq(ig,l,igcm_h2o_ice)
313	sum_subpdq(ig,l,igcm_h2o_vap) =
314	& sum_subpdq(ig,l,igcm_h2o_vap)
315	& + pdq(ig,l,igcm_h2o_vap)
316	IF (hdo) THEN
317	sum_subpdq(ig,l,igcm_hdo_ice) =
318	& sum_subpdq(ig,l,igcm_hdo_ice)
319	& + pdq(ig,l,igcm_hdo_ice)
320	sum_subpdq(ig,l,igcm_hdo_vap) =
321	& sum_subpdq(ig,l,igcm_hdo_vap)
322	& + pdq(ig,l,igcm_hdo_vap)
323	ENDIF !hdo
324	ENDDO
325	ENDDO
326
327	c-------------------------------------------------------------------
328	c 2. Main call to the different cloud schemes:
329	c------------------------------------------------
330	IF (microphys) THEN
331	CALL improvedclouds(ngrid,nlay,microtimestep,
332	& pplay,pteff,sum_subpdt,
333	& pqeff,sum_subpdq,subpdqcloud,subpdtcloud,
334	& nq,tauscaling)
335
336	ELSE
337	CALL simpleclouds(ngrid,nlay,microtimestep,
338	& pplay,pzlay,pteff,sum_subpdt,
339	& pqeff,sum_subpdq,subpdqcloud,subpdtcloud,
340	& nq,tau,rice)
341	ENDIF
342
343	c-------------------------------------------------------------------
344	c 3. Updating tendencies after cloud scheme:
345	c-----------------------------------------------
346
347	IF (microphys) THEN
348	DO l=1,nlay
349	DO ig=1,ngrid
350	sum_subpdq(ig,l,igcm_dust_mass) =
351	& sum_subpdq(ig,l,igcm_dust_mass)
352	& + subpdqcloud(ig,l,igcm_dust_mass)
353	sum_subpdq(ig,l,igcm_dust_number) =
354	& sum_subpdq(ig,l,igcm_dust_number)
355	& + subpdqcloud(ig,l,igcm_dust_number)
356	sum_subpdq(ig,l,igcm_ccn_mass) =
357	& sum_subpdq(ig,l,igcm_ccn_mass)
358	& + subpdqcloud(ig,l,igcm_ccn_mass)
359	sum_subpdq(ig,l,igcm_ccn_number) =
360	& sum_subpdq(ig,l,igcm_ccn_number)
361	& + subpdqcloud(ig,l,igcm_ccn_number)
362	ENDDO
363	ENDDO
364	ENDIF
365	DO l=1,nlay
366	DO ig=1,ngrid
367	sum_subpdq(ig,l,igcm_h2o_ice) =
368	& sum_subpdq(ig,l,igcm_h2o_ice)
369	& + subpdqcloud(ig,l,igcm_h2o_ice)
370	sum_subpdq(ig,l,igcm_h2o_vap) =
371	& sum_subpdq(ig,l,igcm_h2o_vap)
372	& + subpdqcloud(ig,l,igcm_h2o_vap)
373
374	IF (hdo) THEN
375	sum_subpdq(ig,l,igcm_hdo_ice) =
376	& sum_subpdq(ig,l,igcm_hdo_ice)
377	& + subpdqcloud(ig,l,igcm_hdo_ice)
378	sum_subpdq(ig,l,igcm_hdo_vap) =
379	& sum_subpdq(ig,l,igcm_hdo_vap)
380	& + subpdqcloud(ig,l,igcm_hdo_vap)
381	ENDIF ! hdo
382
383	ENDDO
384	ENDDO
385
386	IF (activice) THEN
387	DO l=1,nlay
388	DO ig=1,ngrid
389	sum_subpdt(ig,l) =
390	& sum_subpdt(ig,l) + subpdtcloud(ig,l)
391	ENDDO
392	ENDDO
393	ENDIF
394
395
396	ENDDO ! of DO microstep=1,imicro
397
398	c-------------------------------------------------------------------
399	c 6. Compute final tendencies after time loop:
400	c------------------------------------------------
401
402	c------ Temperature tendency pdtcloud
403	DO l=1,nlay
404	DO ig=1,ngrid
405	pdtcloud(ig,l) =
406	& sum_subpdt(ig,l)/real(imicro)-pdt(ig,l)
407	ENDDO
408	ENDDO
409
410	c------ Tracers tendencies pdqcloud
411	DO l=1,nlay
412	DO ig=1,ngrid
413	pdqcloud(ig,l,igcm_h2o_ice) =
414	& sum_subpdq(ig,l,igcm_h2o_ice)/real(imicro)
415	& - pdq(ig,l,igcm_h2o_ice)
416	pdqcloud(ig,l,igcm_h2o_vap) =
417	& sum_subpdq(ig,l,igcm_h2o_vap)/real(imicro)
418	& - pdq(ig,l,igcm_h2o_vap)
419	IF (hdo) THEN
420	pdqcloud(ig,l,igcm_hdo_ice) =
421	& sum_subpdq(ig,l,igcm_hdo_ice)/real(imicro)
422	& - pdq(ig,l,igcm_hdo_ice)
423	pdqcloud(ig,l,igcm_hdo_vap) =
424	& sum_subpdq(ig,l,igcm_hdo_vap)/real(imicro)
425	& - pdq(ig,l,igcm_hdo_vap)
426	ENDIF !hdo
427	ENDDO
428	ENDDO
429
430	IF(microphys) THEN
431	DO l=1,nlay
432	DO ig=1,ngrid
433	pdqcloud(ig,l,igcm_ccn_mass) =
434	& sum_subpdq(ig,l,igcm_ccn_mass)/real(imicro)
435	& - pdq(ig,l,igcm_ccn_mass)
436	pdqcloud(ig,l,igcm_ccn_number) =
437	& sum_subpdq(ig,l,igcm_ccn_number)/real(imicro)
438	& - pdq(ig,l,igcm_ccn_number)
439	ENDDO
440	ENDDO
441	ENDIF
442
443	IF(scavenging) THEN
444	DO l=1,nlay
445	DO ig=1,ngrid
446	pdqcloud(ig,l,igcm_dust_mass) =
447	& sum_subpdq(ig,l,igcm_dust_mass)/real(imicro)
448	& - pdq(ig,l,igcm_dust_mass)
449	pdqcloud(ig,l,igcm_dust_number) =
450	& sum_subpdq(ig,l,igcm_dust_number)/real(imicro)
451	& - pdq(ig,l,igcm_dust_number)
452	ENDDO
453	ENDDO
454	ENDIF
455
456	c------- Due to stepped entry, other processes tendencies can add up to negative values
457	c------- Therefore, enforce positive values and conserve mass
458	IF(microphys) THEN
459	DO l=1,nlay
460	DO ig=1,ngrid
461	IF ((pq(ig,l,igcm_ccn_number) +
462	& ptimestep* (pdq(ig,l,igcm_ccn_number) +
463	& pdqcloud(ig,l,igcm_ccn_number)) .le. 1.)
464	& .or. (pq(ig,l,igcm_ccn_mass) +
465	& ptimestep* (pdq(ig,l,igcm_ccn_mass) +
466	& pdqcloud(ig,l,igcm_ccn_mass)) .le. 1.e-20)) THEN
467	pdqcloud(ig,l,igcm_ccn_number) =
468	& - pq(ig,l,igcm_ccn_number)/ptimestep
469	& - pdq(ig,l,igcm_ccn_number) + 1.
470	pdqcloud(ig,l,igcm_dust_number) =
471	& -pdqcloud(ig,l,igcm_ccn_number)
472	pdqcloud(ig,l,igcm_ccn_mass) =
473	& - pq(ig,l,igcm_ccn_mass)/ptimestep
474	& - pdq(ig,l,igcm_ccn_mass) + 1.e-20
475	pdqcloud(ig,l,igcm_dust_mass) =
476	& -pdqcloud(ig,l,igcm_ccn_mass)
477	ENDIF
478	ENDDO
479	ENDDO
480	ENDIF
481
482	IF(scavenging) THEN
483	DO l=1,nlay
484	DO ig=1,ngrid
485	IF ((pq(ig,l,igcm_dust_number) +
486	& ptimestep* (pdq(ig,l,igcm_dust_number) +
487	& pdqcloud(ig,l,igcm_dust_number)) .le. 1.)
488	& .or. (pq(ig,l,igcm_dust_mass) +
489	& ptimestep* (pdq(ig,l,igcm_dust_mass) +
490	& pdqcloud(ig,l,igcm_dust_mass)) .le. 1.e-20)) THEN
491	pdqcloud(ig,l,igcm_dust_number) =
492	& - pq(ig,l,igcm_dust_number)/ptimestep
493	& - pdq(ig,l,igcm_dust_number) + 1.
494	pdqcloud(ig,l,igcm_ccn_number) =
495	& -pdqcloud(ig,l,igcm_dust_number)
496	pdqcloud(ig,l,igcm_dust_mass) =
497	& - pq(ig,l,igcm_dust_mass)/ptimestep
498	& - pdq(ig,l,igcm_dust_mass) + 1.e-20
499	pdqcloud(ig,l,igcm_ccn_mass) =
500	& -pdqcloud(ig,l,igcm_dust_mass)
501	ENDIF
502	ENDDO
503	ENDDO
504	ENDIF
505
506	DO l=1,nlay
507	DO ig=1,ngrid
508
509	IF (pq(ig,l,igcm_h2o_ice) + ptimestep*
510	& (pdq(ig,l,igcm_h2o_ice) + pdqcloud(ig,l,igcm_h2o_ice))
511	& .le. 1.e-8) THEN
512	pdqcloud(ig,l,igcm_h2o_ice) =
513	& - pq(ig,l,igcm_h2o_ice)/ptimestep - pdq(ig,l,igcm_h2o_ice)
514	pdqcloud(ig,l,igcm_h2o_vap) = -pdqcloud(ig,l,igcm_h2o_ice)
515	if (hdo) then
516	pdqcloud(ig,l,igcm_hdo_ice) =
517	& - pq(ig,l,igcm_hdo_ice)/ptimestep - pdq(ig,l,igcm_hdo_ice)
518	pdqcloud(ig,l,igcm_hdo_vap) = -pdqcloud(ig,l,igcm_hdo_ice)
519	endif
520	ENDIF
521	IF (pq(ig,l,igcm_h2o_vap) + ptimestep*
522	& (pdq(ig,l,igcm_h2o_vap) + pdqcloud(ig,l,igcm_h2o_vap))
523	& .le. 1.e-8) THEN
524	pdqcloud(ig,l,igcm_h2o_vap) =
525	& - pq(ig,l,igcm_h2o_vap)/ptimestep - pdq(ig,l,igcm_h2o_vap)
526	pdqcloud(ig,l,igcm_h2o_ice) = -pdqcloud(ig,l,igcm_h2o_vap)
527	if (hdo) then
528	pdqcloud(ig,l,igcm_hdo_vap) =
529	& - pq(ig,l,igcm_hdo_vap)/ptimestep - pdq(ig,l,igcm_hdo_vap)
530	pdqcloud(ig,l,igcm_hdo_ice) = -pdqcloud(ig,l,igcm_hdo_vap)
531	endif
532	ENDIF
533
534	ENDDO
535	ENDDO
536
537	c------Update the ice and dust particle size "rice" for output or photochemistry
538	c------Only rsedcloud is used for the water cycle
539
540	IF(scavenging) THEN
541	DO l=1, nlay
542	DO ig=1,ngrid
543
544	call updaterdust(
545	& pq(ig,l,igcm_dust_mass) + ! dust mass
546	& (pdq(ig,l,igcm_dust_mass) + ! dust mass
547	& pdqcloud(ig,l,igcm_dust_mass))*ptimestep, ! dust mass
548	& pq(ig,l,igcm_dust_number) + ! dust number
549	& (pdq(ig,l,igcm_dust_number) + ! dust number
550	& pdqcloud(ig,l,igcm_dust_number))*ptimestep, ! dust number
551	& rdust(ig,l))
552
553	ENDDO
554	ENDDO
555	ENDIF
556
557	IF(microphys) THEN
558
559	! In case one does not want to allow supersatured water when using microphysics.
560	! Not done by default.
561	IF(.not.supersat) THEN
562	zt = pt + (pdt+pdtcloud)*ptimestep
563	call watersat(ngrid*nlay,zt,pplay,zqsat)
564	DO l=1, nlay
565	DO ig=1,ngrid
566	IF (pq(ig,l,igcm_h2o_vap)
567	& + (pdq(ig,l,igcm_h2o_vap) + pdqcloud(ig,l,igcm_h2o_vap))
568	& * ptimestep .ge. zqsat(ig,l)) THEN
569	pdqcloud(ig,l,igcm_h2o_vap) =
570	& (zqsat(ig,l) - pq(ig,l,igcm_h2o_vap))/ptimestep
571	& - pdq(ig,l,igcm_h2o_vap)
572	pdqcloud(ig,l,igcm_h2o_ice) =
573	& -pdqcloud(ig,l,igcm_h2o_vap)
574	! no need to correct ccn_number, updaterad can handle this properly.
575	ENDIF
576	ENDDO
577	ENDDO
578	ENDIF
579
580	DO l=1, nlay
581	DO ig=1,ngrid
582
583	call updaterice_micro(
584	& pq(ig,l,igcm_h2o_ice) + ! ice mass
585	& (pdq(ig,l,igcm_h2o_ice) + ! ice mass
586	& pdqcloud(ig,l,igcm_h2o_ice))*ptimestep, ! ice mass
587	& pq(ig,l,igcm_ccn_mass) + ! ccn mass
588	& (pdq(ig,l,igcm_ccn_mass) + ! ccn mass
589	& pdqcloud(ig,l,igcm_ccn_mass))*ptimestep, ! ccn mass
590	& pq(ig,l,igcm_ccn_number) + ! ccn number
591	& (pdq(ig,l,igcm_ccn_number) + ! ccn number
592	& pdqcloud(ig,l,igcm_ccn_number))*ptimestep, ! ccn number
593	& tauscaling(ig),rice(ig,l),rhocloud(ig,l))
594
595	ENDDO
596	ENDDO
597
598	ELSE ! no microphys
599
600	DO l=1,nlay
601	DO ig=1,ngrid
602
603	call updaterice_typ(
604	& pq(ig,l,igcm_h2o_ice) + ! ice mass
605	& (pdq(ig,l,igcm_h2o_ice) + ! ice mass
606	& pdqcloud(ig,l,igcm_h2o_ice))*ptimestep, ! ice mass
607	& tau(ig,1),pzlay(ig,l),rice(ig,l))
608
609	ENDDO
610	ENDDO
611
612	ENDIF ! of IF(microphys)
613
614
615
616	c A correction if a lot of subliming CO2 fills the 1st layer FF04/2005
617	c ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
618	c Then that should not affect the ice particle radius
619	do ig=1,ngrid
620	if(pdpsrf(ig)ptimestep.gt.0.9(pplev(ig,1)-pplev(ig,2)))then
621	if(pdpsrf(ig)ptimestep.gt.0.9(pplev(ig,1)-pplev(ig,3)))
622	& rice(ig,2)=rice(ig,3)
623	rice(ig,1)=rice(ig,2)
624	end if
625	end do
626
627
628	DO l=1,nlay
629	DO ig=1,ngrid
630	rsedcloud(ig,l)=max(rice(ig,l)*
631	& (1.+nuice_sed)(1.+nuice_sed)(1.+nuice_sed),
632	& rdust(ig,l))
633	! rsedcloud(ig,l)=min(rsedcloud(ig,l),1.e-4)
634	ENDDO
635	ENDDO
636
637	! used for rad. transfer calculations
638	! nuice is constant because a lognormal distribution is prescribed
639	nuice(1:ngrid,1:nlay)=nuice_ref
640
641	c------Update tendencies for sub-grid water ice clouds
642	IF (CLFvarying) THEN
643	DO ig=1,ngrid
644	DO l=1,nlay
645	pdqcloud(ig,l,igcm_dust_mass)=pdqcloud(ig,l,igcm_dust_mass)
646	& *cloudfrac(ig,l)
647	pdqcloud(ig,l,igcm_ccn_mass)=pdqcloud(ig,l,igcm_ccn_mass)
648	& *cloudfrac(ig,l)
649	pdqcloud(ig,l,igcm_dust_number)=pdqcloud(ig,l,
650	& igcm_dust_number) *cloudfrac(ig,l)
651	pdqcloud(ig,l,igcm_ccn_number)=pdqcloud(ig,l,
652	& igcm_ccn_number) *cloudfrac(ig,l)
653	pdqcloud(ig,l,igcm_h2o_vap)=pdqcloud(ig,l,
654	& igcm_h2o_vap) *cloudfrac(ig,l)
655	pdqcloud(ig,l,igcm_h2o_ice)=pdqcloud(ig,l,
656	& igcm_h2o_ice) *cloudfrac(ig,l)
657	ENDDO
658	ENDDO
659	pdtcloud(:,:)=pdtcloud(:,:)*cloudfrac(:,:)
660	ENDIF
661	#ifndef MESOSCALE
662	c=======================================================================
663	call WRITEDIAGFI(ngrid,"pdqice2","pdqcloudice apres microphysique"
664	& ,"kg/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,igcm_h2o_ice))
665	call WRITEDIAGFI(ngrid,"pdqvap2","pdqcloudvap apres microphysique"
666	& ,"kg/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,
667	& igcm_h2o_vap))
668	if (hdo) then
669	call WRITEDIAGFI(ngrid,"pdqiceD","pdqiceD apres microphysique"
670	& ,"kg/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,igcm_hdo_ice))
671	call WRITEDIAGFI(ngrid,"pdqvapD","pdqvapD apres microphysique"
672	& ,"kg/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,
673	& igcm_hdo_vap))
674	endif
675	call WRITEDIAGFI(ngrid,"pdqccn2","pdqcloudccn apres microphysique"
676	& ,"kg/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,
677	& igcm_ccn_mass))
678	call WRITEDIAGFI(ngrid,"pdqccnN2","pdqcloudccnN apres
679	& microphysique","nb/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,
680	& igcm_ccn_number))
681	call WRITEDIAGFI(ngrid,"pdqdust2", "pdqclouddust apres
682	& microphysique","kg/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,
683	& igcm_dust_mass))
684	call WRITEDIAGFI(ngrid,"pdqdustN2", "pdqclouddustN apres
685	& microphysique","nb/kg.s-1",3,pdqcloud(1:ngrid,1:nlay,
686	& igcm_dust_number))
687	c=======================================================================
688	#endif
689
690	END SUBROUTINE watercloud
691
692	subroutine ini_watercloud_mod(ngrid,nlayer,nq)
693	implicit none
694
695	integer,intent(in) :: ngrid ! number of atmospheric columns
696	integer,intent(in) :: nlayer ! number of atmospheric layers
697	integer,intent(in) :: nq ! number of tracers
698
699	allocate(zdqcloud(ngrid,nlayer,nq))
700	zdqcloud(:,:,:)=0
701	allocate(zdqscloud(ngrid,nq))
702	zdqscloud(:,:)=0
703
704	end subroutine ini_watercloud_mod
705
706
707	subroutine end_watercloud_mod
708	implicit none
709
710	if (allocated(zdqcloud)) deallocate(zdqcloud)
711	if (allocated(zdqscloud)) deallocate(zdqscloud)
712
713	end subroutine end_watercloud_mod
714
715	END MODULE watercloud_mod

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

Download in other formats:

Original Format