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vdifc_mod.F @ 2814

Last change on this file since 2814 was 2616, checked in by romain.vande, 3 years ago
LMDZ_MARS RV : Open_MP; Put all the "save" variables as "!$OMP THREADPRIVATE" in phymars. The code can now be tested, see README for more info
File size: 38.5 KB

Rev	Line
[1969]	1	MODULE vdifc_mod
	2
	3	IMPLICIT NONE
	4
	5	CONTAINS
	6
[38]	7	SUBROUTINE vdifc(ngrid,nlay,nq,co2ice,ppopsk,
	8	$ ptimestep,pcapcal,lecrit,
	9	$ pplay,pplev,pzlay,pzlev,pz0,
	10	$ pu,pv,ph,pq,ptsrf,pemis,pqsurf,
	11	$ pdufi,pdvfi,pdhfi,pdqfi,pfluxsrf,
	12	$ pdudif,pdvdif,pdhdif,pdtsrf,pq2,
[660]	13	$ pdqdif,pdqsdif,wstar,zcdv_true,zcdh_true,
[1996]	14	$ hfmax,pcondicea_co2microp,sensibFlux,
[2260]	15	$ dustliftday,local_time,watercap, dwatercap_dif)
[1236]	16
[1036]	17	use tracer_mod, only: noms, igcm_dust_mass, igcm_dust_number,
	18	& igcm_dust_submicron, igcm_h2o_vap,
[1974]	19	& igcm_h2o_ice, alpha_lift,
[2312]	20	& igcm_hdo_vap, igcm_hdo_ice,
[1974]	21	& igcm_stormdust_mass, igcm_stormdust_number
[1224]	22	use surfdat_h, only: watercaptag, frost_albedo_threshold, dryness
[1969]	23	USE comcstfi_h, ONLY: cpp, r, rcp, g
[1996]	24	use watersat_mod, only: watersat
[1242]	25	use turb_mod, only: turb_resolved, ustar, tstar
[2160]	26	use compute_dtau_mod, only: ti_injection_sol,tf_injection_sol
[2312]	27	use hdo_surfex_mod, only: hdo_surfex
[2515]	28	c use geometry_mod, only: longitude_deg,latitude_deg ! Joseph
[2409]	29	use dust_param_mod, only: doubleq, submicron, lifting
[2312]	30
[38]	31	IMPLICIT NONE
	32
	33	c=======================================================================
	34	c
	35	c subject:
	36	c --------
	37	c Turbulent diffusion (mixing) for potential T, U, V and tracer
	38	c
	39	c Shema implicite
	40	c On commence par rajouter au variables x la tendance physique
	41	c et on resoult en fait:
	42	c x(t+1) = x(t) + dt * (dx/dt)phys(t) + dt * (dx/dt)difv(t+1)
	43	c
	44	c author:
	45	c ------
	46	c Hourdin/Forget/Fournier
	47	c=======================================================================
	48
	49	c-----------------------------------------------------------------------
	50	c declarations:
	51	c -------------
	52
[1944]	53	include "callkeys.h"
	54	include "microphys.h"
[38]	55
	56	c
	57	c arguments:
	58	c ----------
	59
[1036]	60	INTEGER,INTENT(IN) :: ngrid,nlay
	61	REAL,INTENT(IN) :: ptimestep
	62	REAL,INTENT(IN) :: pplay(ngrid,nlay),pplev(ngrid,nlay+1)
	63	REAL,INTENT(IN) :: pzlay(ngrid,nlay),pzlev(ngrid,nlay+1)
	64	REAL,INTENT(IN) :: pu(ngrid,nlay),pv(ngrid,nlay)
	65	REAL,INTENT(IN) :: ph(ngrid,nlay)
	66	REAL,INTENT(IN) :: ptsrf(ngrid),pemis(ngrid)
	67	REAL,INTENT(IN) :: pdufi(ngrid,nlay),pdvfi(ngrid,nlay)
	68	REAL,INTENT(IN) :: pdhfi(ngrid,nlay)
	69	REAL,INTENT(IN) :: pfluxsrf(ngrid)
	70	REAL,INTENT(OUT) :: pdudif(ngrid,nlay),pdvdif(ngrid,nlay)
	71	REAL,INTENT(OUT) :: pdtsrf(ngrid),pdhdif(ngrid,nlay)
[1130]	72	REAL,INTENT(IN) :: pcapcal(ngrid)
	73	REAL,INTENT(INOUT) :: pq2(ngrid,nlay+1)
[38]	74
	75	c Argument added for condensation:
[1036]	76	REAL,INTENT(IN) :: co2ice (ngrid), ppopsk(ngrid,nlay)
	77	logical,INTENT(IN) :: lecrit
[1996]	78	REAL,INTENT(IN) :: pcondicea_co2microp(ngrid,nlay)! tendency due to CO2 condensation (kg/kg.s-1)
	79
[1036]	80	REAL,INTENT(IN) :: pz0(ngrid) ! surface roughness length (m)
[224]	81
[256]	82	c Argument added to account for subgrid gustiness :
	83
[1944]	84	REAL,INTENT(IN) :: wstar(ngrid), hfmax(ngrid)!, zi(ngrid)
[256]	85
[38]	86	c Traceurs :
[1036]	87	integer,intent(in) :: nq
	88	REAL,INTENT(IN) :: pqsurf(ngrid,nq)
[2515]	89	REAL :: zqsurf(ngrid) ! temporary water tracer
[1036]	90	real,intent(in) :: pq(ngrid,nlay,nq), pdqfi(ngrid,nlay,nq)
	91	real,intent(out) :: pdqdif(ngrid,nlay,nq)
[1974]	92	real,intent(out) :: pdqsdif(ngrid,nq)
	93	REAL,INTENT(in) :: dustliftday(ngrid)
	94	REAL,INTENT(in) :: local_time(ngrid)
[38]	95
	96	c local:
	97	c ------
	98
[1130]	99	REAL :: pt(ngrid,nlay)
[473]	100
[38]	101	INTEGER ilev,ig,ilay,nlev
	102
[1047]	103	REAL z4st,zdplanck(ngrid)
	104	REAL zkv(ngrid,nlay+1),zkh(ngrid,nlay+1)
	105	REAL zkq(ngrid,nlay+1)
	106	REAL zcdv(ngrid),zcdh(ngrid)
	107	REAL zcdv_true(ngrid),zcdh_true(ngrid) ! drag coeff are used by the LES to recompute u* and hfx
	108	REAL zu(ngrid,nlay),zv(ngrid,nlay)
	109	REAL zh(ngrid,nlay)
	110	REAL ztsrf2(ngrid)
	111	REAL z1(ngrid),z2(ngrid)
	112	REAL za(ngrid,nlay),zb(ngrid,nlay)
	113	REAL zb0(ngrid,nlay)
	114	REAL zc(ngrid,nlay),zd(ngrid,nlay)
[38]	115	REAL zcst1
[1047]	116	REAL zu2(ngrid)
[38]	117
	118	EXTERNAL SSUM,SCOPY
	119	REAL SSUM
[1036]	120	LOGICAL,SAVE :: firstcall=.true.
[38]	121
[2616]	122	!$OMP THREADPRIVATE(firstcall)
[626]	123
[38]	124	c variable added for CO2 condensation:
	125	c ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[1047]	126	REAL hh , zhcond(ngrid,nlay)
	127	REAL,PARAMETER :: latcond=5.9e5
	128	REAL,PARAMETER :: tcond1mb=136.27
	129	REAL,SAVE :: acond,bcond
[2616]	130
	131	!$OMP THREADPRIVATE(acond,bcond)
[669]	132
[2515]	133	c Subtimestep & implicit treatment of water vapor
	134	c ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	135	REAL zdqsdif(ngrid) ! subtimestep pdqsdif for water ice
	136	REAL ztsrf(ngrid) ! temporary surface temperature in tsub
	137	REAL zdtsrf(ngrid) ! surface temperature tendancy in tsub
	138
[2179]	139	c For latent heat release from ground water ice sublimation
[2515]	140	c ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	141	REAL tsrf_lh(ngrid) ! temporary surface temperature with lh effect
[2179]	142	REAL lh ! latent heat, formulation given in the Technical Document:
	143	! "Modeling water ice sublimation under Phoenix-like conditions", Montmessin et al. 2004
[38]	144
	145	c Tracers :
	146	c ~~~~~~~
	147	INTEGER iq
[1047]	148	REAL zq(ngrid,nlay,nq)
	149	REAL zq1temp(ngrid)
	150	REAL rho(ngrid) ! near surface air density
	151	REAL qsat(ngrid)
[38]	152
[2312]	153	REAL hdoflux(ngrid) ! value of vapour flux of HDO
	154	REAL h2oflux(ngrid) ! value of vapour flux of H2O
	155	REAL old_h2o_vap(ngrid) ! traceur d'eau avant traitement
	156
[38]	157	REAL kmixmin
	158
[2260]	159	c Argument added for surface water ice budget:
	160	REAL,INTENT(IN) :: watercap(ngrid)
	161	REAL,INTENT(OUT) :: dwatercap_dif(ngrid)
	162
[2515]	163	c Subtimestep to compute h2o latent heat flux:
	164	REAL :: dtmax = 0.5 ! subtimestep temp criterion
	165	INTEGER tsub ! adaptative subtimestep (seconds)
	166	REAL subtimestep !ptimestep/nsubtimestep
	167	INTEGER nsubtimestep(ngrid) ! number of subtimestep (int)
	168
[473]	169	c Mass-variation scheme :
	170	c ~~~~~~~
	171
	172	INTEGER j,l
[1047]	173	REAL zcondicea(ngrid,nlay)
	174	REAL zt(ngrid,nlay),ztcond(ngrid,nlay+1)
	175	REAL betam(ngrid,nlay),dmice(ngrid,nlay)
	176	REAL pdtc(ngrid,nlay)
	177	REAL zhs(ngrid,nlay)
	178	REAL,SAVE :: ccond
[473]	179
[2616]	180	!$OMP THREADPRIVATE(ccond)
	181
[473]	182	c Theta_m formulation for mass-variation scheme :
	183	c ~~~~~~~
	184
[1047]	185	INTEGER,SAVE :: ico2
	186	INTEGER llnt(ngrid)
	187	REAL,SAVE :: m_co2, m_noco2, A , B
	188	REAL vmr_co2(ngrid,nlay)
[473]	189	REAL qco2,mmean
	190
[2616]	191	!$OMP THREADPRIVATE(ico2,m_co2,m_noco2,A,B)
	192
[1047]	193	REAL,INTENT(OUT) :: sensibFlux(ngrid)
[660]	194
[2312]	195	!!MARGAUX
	196	REAL DoH_vap(ngrid,nlay)
	197
[38]	198	c ** un petit test de coherence
	199	c --------------------------
	200
[1779]	201	! AS: OK firstcall absolute
[38]	202	IF (firstcall) THEN
	203	c To compute: Tcond= 1./(bcond-acondlog(.0095p)) (p in pascal)
	204	bcond=1./tcond1mb
	205	acond=r/latcond
[473]	206	ccond=cpp/(g*latcond)
[38]	207	PRINT*,'In vdifc: Tcond(P=1mb)=',tcond1mb,' Lcond=',latcond
[473]	208	PRINT*,' acond,bcond,ccond',acond,bcond,ccond
[38]	209
[473]	210
	211	ico2=0
	212
	213	if (tracer) then
	214	c Prepare Special treatment if one of the tracer is CO2 gas
[1036]	215	do iq=1,nq
[473]	216	if (noms(iq).eq."co2") then
	217	ico2=iq
	218	m_co2 = 44.01E-3 ! CO2 molecular mass (kg/mol)
	219	m_noco2 = 33.37E-3 ! Non condensible mol mass (kg/mol)
	220	c Compute A and B coefficient use to compute
	221	c mean molecular mass Mair defined by
	222	c 1/Mair = q(ico2)/m_co2 + (1-q(ico2))/m_noco2
	223	c 1/Mair = A*q(ico2) + B
	224	A =(1/m_co2 - 1/m_noco2)
	225	B=1/m_noco2
	226	endif
	227	enddo
	228	end if
	229
[38]	230	firstcall=.false.
	231	ENDIF
	232
	233
	234	c-----------------------------------------------------------------------
	235	c 1. initialisation
	236	c -----------------
	237
	238	nlev=nlay+1
	239
[1035]	240	! initialize output tendencies to zero:
	241	pdudif(1:ngrid,1:nlay)=0
	242	pdvdif(1:ngrid,1:nlay)=0
	243	pdhdif(1:ngrid,1:nlay)=0
	244	pdtsrf(1:ngrid)=0
[2515]	245	zdtsrf(1:ngrid)=0
[1035]	246	pdqdif(1:ngrid,1:nlay,1:nq)=0
	247	pdqsdif(1:ngrid,1:nq)=0
[2515]	248	zdqsdif(1:ngrid)=0
[2260]	249	dwatercap_dif(1:ngrid)=0
[1035]	250
[38]	251	c ** calcul de rhodz et dtrho/dz=dtrho*2 g/dp
	252	c avec rho=p/RT=p/ (R Theta) (p/ps)**kappa
	253	c ----------------------------------------
	254
	255	DO ilay=1,nlay
	256	DO ig=1,ngrid
	257	za(ig,ilay)=(pplev(ig,ilay)-pplev(ig,ilay+1))/g
[473]	258	! Mass variation scheme:
	259	betam(ig,ilay)=-za(ig,ilay)latcond/(cppppopsk(ig,ilay))
[38]	260	ENDDO
	261	ENDDO
	262
	263	zcst1=4.gptimestep/(r*r)
	264	DO ilev=2,nlev-1
	265	DO ig=1,ngrid
	266	zb0(ig,ilev)=pplev(ig,ilev)*
	267	s (pplev(ig,1)/pplev(ig,ilev))**rcp /
	268	s (ph(ig,ilev-1)+ph(ig,ilev))
	269	zb0(ig,ilev)=zcst1zb0(ig,ilev)zb0(ig,ilev)/
	270	s (pplay(ig,ilev-1)-pplay(ig,ilev))
	271	ENDDO
	272	ENDDO
	273	DO ig=1,ngrid
[473]	274	zb0(ig,1)=ptimesteppplev(ig,1)/(rptsrf(ig))
[38]	275	ENDDO
	276
	277	c ** diagnostique pour l'initialisation
	278	c ----------------------------------
	279
	280	IF(lecrit) THEN
	281	ig=ngrid/2+1
	282	PRINT*,'Pression (mbar) ,altitude (km),u,v,theta, rho dz'
	283	DO ilay=1,nlay
	284	WRITE(*,'(6f11.5)')
	285	s .01pplay(ig,ilay),.001pzlay(ig,ilay),
	286	s pu(ig,ilay),pv(ig,ilay),ph(ig,ilay),za(ig,ilay)
	287	ENDDO
	288	PRINT*,'Pression (mbar) ,altitude (km),zb'
	289	DO ilev=1,nlay
	290	WRITE(*,'(3f15.7)')
	291	s .01pplev(ig,ilev),.001pzlev(ig,ilev),
	292	s zb0(ig,ilev)
	293	ENDDO
	294	ENDIF
	295
[473]	296	c -----------------------------------
[38]	297	c Potential Condensation temperature:
	298	c -----------------------------------
	299
[473]	300	c Compute CO2 Volume mixing ratio
	301	c -------------------------------
	302	if (callcond.and.(ico2.ne.0)) then
	303	DO ilev=1,nlay
	304	DO ig=1,ngrid
[529]	305	qco2=MAX(1.E-30
	306	& ,pq(ig,ilev,ico2)+pdqfi(ig,ilev,ico2)*ptimestep)
[473]	307	c Mean air molecular mass = 1/(q(ico2)/m_co2 + (1-q(ico2))/m_noco2)
	308	mmean=1/(A*qco2 +B)
	309	vmr_co2(ig,ilev) = qco2*mmean/m_co2
	310	ENDDO
	311	ENDDO
	312	else
	313	DO ilev=1,nlay
	314	DO ig=1,ngrid
	315	vmr_co2(ig,ilev)=0.95
	316	ENDDO
	317	ENDDO
	318	end if
[38]	319
[473]	320	c forecast of atmospheric temperature zt and frost temperature ztcond
	321	c --------------------------------------------------------------------
[38]	322
[473]	323	if (callcond) then
	324	DO ilev=1,nlay
	325	DO ig=1,ngrid
[884]	326	ztcond(ig,ilev)=
	327	& 1./(bcond-acondlog(.01vmr_co2(ig,ilev)*pplay(ig,ilev)))
	328	if (pplay(ig,ilev).lt.1e-4) ztcond(ig,ilev)=0.0 !mars Monica
[473]	329	! zhcond(ig,ilev) =
	330	! & (1./(bcond-acondlog(.0095pplay(ig,ilev))))/ppopsk(ig,ilev)
	331	zhcond(ig,ilev) = ztcond(ig,ilev)/ppopsk(ig,ilev)
	332	END DO
	333	END DO
[884]	334	ztcond(:,nlay+1)=ztcond(:,nlay)
[473]	335	else
[884]	336	zhcond(:,:) = 0
	337	ztcond(:,:) = 0
[473]	338	end if
	339
	340
[38]	341	c-----------------------------------------------------------------------
	342	c 2. ajout des tendances physiques
	343	c -----------------------------
	344
	345	DO ilev=1,nlay
	346	DO ig=1,ngrid
	347	zu(ig,ilev)=pu(ig,ilev)+pdufi(ig,ilev)*ptimestep
	348	zv(ig,ilev)=pv(ig,ilev)+pdvfi(ig,ilev)*ptimestep
	349	zh(ig,ilev)=ph(ig,ilev)+pdhfi(ig,ilev)*ptimestep
[473]	350	! zh(ig,ilev)=max(zh(ig,ilev),zhcond(ig,ilev))
[38]	351	ENDDO
	352	ENDDO
	353	if(tracer) then
	354	DO iq =1, nq
	355	DO ilev=1,nlay
	356	DO ig=1,ngrid
	357	zq(ig,ilev,iq)=pq(ig,ilev,iq)+pdqfi(ig,ilev,iq)*ptimestep
	358	ENDDO
	359	ENDDO
	360	ENDDO
	361	end if
	362
	363	c-----------------------------------------------------------------------
	364	c 3. schema de turbulence
	365	c --------------------
	366
	367	c ** source d'energie cinetique turbulente a la surface
	368	c (condition aux limites du schema de diffusion turbulente
	369	c dans la couche limite
	370	c ---------------------
	371
[499]	372	CALL vdif_cd(ngrid,nlay,pz0,g,pzlay,pu,pv,wstar,ptsrf,ph
[1236]	373	& ,zcdv_true,zcdh_true)
[256]	374
[290]	375	zu2(:)=pu(:,1)pu(:,1)+pv(:,1)pv(:,1)
[256]	376
[291]	377	IF (callrichsl) THEN
[545]	378	zcdv(:)=zcdv_true(:)*sqrt(zu2(:)+
	379	& (log(1.+0.7wstar(:) + 2.3wstar(:)2))2)
	380	zcdh(:)=zcdh_true(:)*sqrt(zu2(:)+
	381	& (log(1.+0.7wstar(:) + 2.3wstar(:)2))2)
[496]	382
[1242]	383	ustar(:)=sqrt(zcdv_true(:))*sqrt(zu2(:)+
[545]	384	& (log(1.+0.7wstar(:) + 2.3wstar(:)2))2)
	385
[1242]	386	tstar(:)=0.
[545]	387	DO ig=1,ngrid
	388	IF (zcdh_true(ig) .ne. 0.) THEN ! When Cd=Ch=0, u=t=0
[1242]	389	tstar(ig)=(ph(ig,1)-ptsrf(ig))*zcdh(ig)/ustar(ig)
[545]	390	ENDIF
	391	ENDDO
	392
[284]	393	ELSE
[545]	394	zcdv(:)=zcdv_true(:)*sqrt(zu2(:)) ! 1 / bulk aerodynamic momentum conductance
	395	zcdh(:)=zcdh_true(:)*sqrt(zu2(:)) ! 1 / bulk aerodynamic heat conductance
[1242]	396	ustar(:)=sqrt(zcdv_true(:))*sqrt(zu2(:))
	397	tstar(:)=(ph(:,1)-ptsrf(:))*zcdh_true(:)/sqrt(zcdv_true(:))
[290]	398	ENDIF
[38]	399
[529]	400	! Some usefull diagnostics for the new surface layer parametrization :
[290]	401
[1130]	402	! call WRITEDIAGFI(ngrid,'vdifc_zcdv_true',
[256]	403	! & 'momentum drag','no units',
	404	! & 2,zcdv_true)
[1130]	405	! call WRITEDIAGFI(ngrid,'vdifc_zcdh_true',
[256]	406	! & 'heat drag','no units',
	407	! & 2,zcdh_true)
[1130]	408	! call WRITEDIAGFI(ngrid,'vdifc_ust',
[473]	409	! & 'friction velocity','m/s',2,ust)
[1130]	410	! call WRITEDIAGFI(ngrid,'vdifc_tst',
[473]	411	! & 'friction temperature','K',2,tst)
[1130]	412	! call WRITEDIAGFI(ngrid,'vdifc_zcdv',
[268]	413	! & 'aerodyn momentum conductance','m/s',
[256]	414	! & 2,zcdv)
[1130]	415	! call WRITEDIAGFI(ngrid,'vdifc_zcdh',
[268]	416	! & 'aerodyn heat conductance','m/s',
[256]	417	! & 2,zcdh)
	418
[38]	419	c ** schema de diffusion turbulente dans la couche limite
	420	c ----------------------------------------------------
[1240]	421	IF (.not. callyamada4) THEN
[529]	422
[1130]	423	CALL vdif_kc(ngrid,nlay,nq,ptimestep,g,pzlev,pzlay
[38]	424	& ,pu,pv,ph,zcdv_true
[325]	425	& ,pq2,zkv,zkh,zq)
[529]	426
[544]	427	ELSE
[38]	428
[555]	429	pt(:,:)=ph(:,:)*ppopsk(:,:)
[1036]	430	CALL yamada4(ngrid,nlay,nq,ptimestep,g,r,pplev,pt
[1242]	431	s ,pzlev,pzlay,pu,pv,ph,pq,zcdv_true,pq2,zkv,zkh,zkq,ustar
[652]	432	s ,9)
[544]	433	ENDIF
	434
[38]	435	if ((doubleq).and.(ngrid.eq.1)) then
	436	kmixmin = 80. !80.! minimum eddy mix coeff in 1D
	437	do ilev=1,nlay
	438	do ig=1,ngrid
	439	zkh(ig,ilev) = max(kmixmin,zkh(ig,ilev))
	440	zkv(ig,ilev) = max(kmixmin,zkv(ig,ilev))
	441	end do
	442	end do
	443	end if
	444
	445	c ** diagnostique pour le schema de turbulence
	446	c -----------------------------------------
	447
	448	IF(lecrit) THEN
	449	PRINT*
	450	PRINT*,'Diagnostic for the vertical turbulent mixing'
	451	PRINT*,'Cd for momentum and potential temperature'
	452
	453	PRINT*,zcdv(ngrid/2+1),zcdh(ngrid/2+1)
	454	PRINT*,'Mixing coefficient for momentum and pot.temp.'
	455	DO ilev=1,nlay
	456	PRINT*,zkv(ngrid/2+1,ilev),zkh(ngrid/2+1,ilev)
	457	ENDDO
	458	ENDIF
	459
	460
	461
	462
	463	c-----------------------------------------------------------------------
	464	c 4. inversion pour l'implicite sur u
	465	c --------------------------------
	466
	467	c ** l'equation est
	468	c u(t+1) = u(t) + dt * {(du/dt)phys}(t) + dt * {(du/dt)difv}(t+1)
	469	c avec
	470	c /zu/ = u(t) + dt * {(du/dt)phys}(t) (voir paragraphe 2.)
	471	c et
	472	c dt * {(du/dt)difv}(t+1) = dt * {(d/dz)[ Ku (du/dz) ]}(t+1)
	473	c donc les entrees sont /zcdv/ pour la condition a la limite sol
	474	c et /zkv/ = Ku
[2312]	475
[2274]	476	zb(1:ngrid,2:nlay)=zkv(1:ngrid,2:nlay)*zb0(1:ngrid,2:nlay)
	477	zb(1:ngrid,1)=zcdv(1:ngrid)*zb0(1:ngrid,1)
[38]	478
	479	DO ig=1,ngrid
	480	z1(ig)=1./(za(ig,nlay)+zb(ig,nlay))
	481	zc(ig,nlay)=za(ig,nlay)zu(ig,nlay)z1(ig)
	482	zd(ig,nlay)=zb(ig,nlay)*z1(ig)
	483	ENDDO
	484
	485	DO ilay=nlay-1,1,-1
	486	DO ig=1,ngrid
	487	z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+
	488	$ zb(ig,ilay+1)*(1.-zd(ig,ilay+1)))
	489	zc(ig,ilay)=(za(ig,ilay)*zu(ig,ilay)+
	490	$ zb(ig,ilay+1)zc(ig,ilay+1))z1(ig)
	491	zd(ig,ilay)=zb(ig,ilay)*z1(ig)
	492	ENDDO
	493	ENDDO
	494
	495	DO ig=1,ngrid
	496	zu(ig,1)=zc(ig,1)
	497	ENDDO
	498	DO ilay=2,nlay
	499	DO ig=1,ngrid
	500	zu(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zu(ig,ilay-1)
	501	ENDDO
	502	ENDDO
	503
	504
	505
	506
	507
	508	c-----------------------------------------------------------------------
	509	c 5. inversion pour l'implicite sur v
	510	c --------------------------------
	511
	512	c ** l'equation est
	513	c v(t+1) = v(t) + dt * {(dv/dt)phys}(t) + dt * {(dv/dt)difv}(t+1)
	514	c avec
	515	c /zv/ = v(t) + dt * {(dv/dt)phys}(t) (voir paragraphe 2.)
	516	c et
	517	c dt * {(dv/dt)difv}(t+1) = dt * {(d/dz)[ Kv (dv/dz) ]}(t+1)
	518	c donc les entrees sont /zcdv/ pour la condition a la limite sol
	519	c et /zkv/ = Kv
	520
	521	DO ig=1,ngrid
	522	z1(ig)=1./(za(ig,nlay)+zb(ig,nlay))
	523	zc(ig,nlay)=za(ig,nlay)zv(ig,nlay)z1(ig)
	524	zd(ig,nlay)=zb(ig,nlay)*z1(ig)
	525	ENDDO
	526
	527	DO ilay=nlay-1,1,-1
	528	DO ig=1,ngrid
	529	z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+
	530	$ zb(ig,ilay+1)*(1.-zd(ig,ilay+1)))
	531	zc(ig,ilay)=(za(ig,ilay)*zv(ig,ilay)+
	532	$ zb(ig,ilay+1)zc(ig,ilay+1))z1(ig)
	533	zd(ig,ilay)=zb(ig,ilay)*z1(ig)
	534	ENDDO
	535	ENDDO
	536
	537	DO ig=1,ngrid
	538	zv(ig,1)=zc(ig,1)
	539	ENDDO
	540	DO ilay=2,nlay
	541	DO ig=1,ngrid
	542	zv(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zv(ig,ilay-1)
	543	ENDDO
	544	ENDDO
	545
	546
	547
	548
	549
	550	c-----------------------------------------------------------------------
	551	c 6. inversion pour l'implicite sur h sans oublier le couplage
	552	c avec le sol (conduction)
	553	c ------------------------
	554
	555	c ** l'equation est
	556	c h(t+1) = h(t) + dt * {(dh/dt)phys}(t) + dt * {(dh/dt)difv}(t+1)
	557	c avec
	558	c /zh/ = h(t) + dt * {(dh/dt)phys}(t) (voir paragraphe 2.)
	559	c et
	560	c dt * {(dh/dt)difv}(t+1) = dt * {(d/dz)[ Kh (dh/dz) ]}(t+1)
	561	c donc les entrees sont /zcdh/ pour la condition de raccord au sol
	562	c et /zkh/ = Kh
	563	c -------------
	564
[473]	565	c Mass variation scheme:
[2274]	566	zb(1:ngrid,2:nlay)=zkh(1:ngrid,2:nlay)*zb0(1:ngrid,2:nlay)
	567	zb(1:ngrid,1)=zcdh(1:ngrid)*zb0(1:ngrid,1)
[38]	568
[473]	569	c on initialise dm c
	570
	571	pdtc(:,:)=0.
	572	zt(:,:)=0.
	573	dmice(:,:)=0.
[38]	574
	575	c ** calcul de (d Planck / dT) a la temperature d'interface
	576	c ------------------------------------------------------
	577
	578	z4st=4.5.67e-8ptimestep
[544]	579	IF (tke_heat_flux .eq. 0.) THEN
[38]	580	DO ig=1,ngrid
	581	zdplanck(ig)=z4stpemis(ig)ptsrf(ig)ptsrf(ig)ptsrf(ig)
	582	ENDDO
[544]	583	ELSE
	584	zdplanck(:)=0.
	585	ENDIF
[38]	586
[473]	587	! calcul de zc et zd pour la couche top en prenant en compte le terme
[2080]	588	! de variation de masse (on fait une boucle pour que \E7a converge)
[473]	589
	590	! Identification des points de grilles qui ont besoin de la correction
	591
	592	llnt(:)=1
[1236]	593	IF (.not.turb_resolved) THEN
[884]	594	IF (callcond) THEN
	595	DO ig=1,ngrid
[473]	596	DO l=1,nlay
	597	if(zh(ig,l) .lt. zhcond(ig,l)) then
	598	llnt(ig)=300
	599	! 200 and 100 do not go beyond month 9 with normal dissipation
	600	goto 5
	601	endif
	602	ENDDO
[884]	603	5 continue
	604	ENDDO
	605	ENDIF
[473]	606
[529]	607	ENDIF
	608
[473]	609	DO ig=1,ngrid
	610
	611	! Initialization of z1 and zd, which do not depend on dmice
	612
	613	z1(ig)=1./(za(ig,nlay)+zb(ig,nlay))
	614	zd(ig,nlay)=zb(ig,nlay)*z1(ig)
	615
	616	DO ilay=nlay-1,1,-1
	617	z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+
	618	$ zb(ig,ilay+1)*(1.-zd(ig,ilay+1)))
	619	zd(ig,ilay)=zb(ig,ilay)*z1(ig)
	620	ENDDO
	621
	622	! Convergence loop
	623
	624	DO j=1,llnt(ig)
	625
	626	z1(ig)=1./(za(ig,nlay)+zb(ig,nlay))
	627	zc(ig,nlay)=za(ig,nlay)*zh(ig,nlay)
	628	& -betam(ig,nlay)*dmice(ig,nlay)
	629	zc(ig,nlay)=zc(ig,nlay)*z1(ig)
	630	! zd(ig,nlay)=zb(ig,nlay)*z1(ig)
	631
	632	! calcul de zc et zd pour les couches du haut vers le bas
	633
	634	DO ilay=nlay-1,1,-1
	635	z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+
	636	$ zb(ig,ilay+1)*(1.-zd(ig,ilay+1)))
	637	zc(ig,ilay)=(za(ig,ilay)*zh(ig,ilay)+
	638	$ zb(ig,ilay+1)*zc(ig,ilay+1)-
	639	$ betam(ig,ilay)dmice(ig,ilay))z1(ig)
	640	! zd(ig,ilay)=zb(ig,ilay)*z1(ig)
	641	ENDDO
	642
[38]	643	c ** calcul de la temperature_d'interface et de sa tendance.
	644	c on ecrit que la somme des flux est nulle a l'interface
	645	c a t + \delta t,
	646	c c'est a dire le flux radiatif a {t + \delta t}
	647	c + le flux turbulent a {t + \delta t}
	648	c qui s'ecrit K (T1-Tsurf) avec T1 = d1 Tsurf + c1
	649	c (notation K dt = /cpp*b/)
	650	c + le flux dans le sol a t
	651	c + l'evolution du flux dans le sol lorsque la temperature d'interface
	652	c passe de sa valeur a t a sa valeur a {t + \delta t}.
	653	c ----------------------------------------------------
	654
	655	z1(ig)=pcapcal(ig)ptsrf(ig)+cppzb(ig,1)*zc(ig,1)
	656	s +zdplanck(ig)ptsrf(ig)+ pfluxsrf(ig)ptimestep
	657	z2(ig)= pcapcal(ig)+cppzb(ig,1)(1.-zd(ig,1))+zdplanck(ig)
	658	ztsrf2(ig)=z1(ig)/z2(ig)
[473]	659	! pdtsrf(ig)=(ztsrf2(ig)-ptsrf(ig))/ptimestep !incremented outside loop
	660	zhs(ig,1)=zc(ig,1)+zd(ig,1)*ztsrf2(ig)
[38]	661
	662	c ** et a partir de la temperature au sol on remonte
	663	c -----------------------------------------------
	664
[473]	665	DO ilay=2,nlay
	666	zhs(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zhs(ig,ilay-1)
	667	ENDDO
	668	DO ilay=1,nlay
	669	zt(ig,ilay)=zhs(ig,ilay)*ppopsk(ig,ilay)
	670	ENDDO
	671
	672	c Condensation/sublimation in the atmosphere
	673	c ------------------------------------------
	674	c (computation of zcondicea and dmice)
	675
[1996]	676	IF (.NOT. co2clouds) then
	677	DO l=nlay , 1, -1
[473]	678	IF(zt(ig,l).LT.ztcond(ig,l)) THEN
	679	pdtc(ig,l)=(ztcond(ig,l) - zt(ig,l))/ptimestep
	680	zcondicea(ig,l)=(pplev(ig,l)-pplev(ig,l+1))
	681	& ccondpdtc(ig,l)
	682	dmice(ig,l)= dmice(ig,l) + zcondicea(ig,l)*ptimestep
	683	END IF
[1996]	684	ENDDO
	685	ELSE
	686	DO l=nlay , 1, -1
	687	zcondicea(ig,l)= 0.!pcondicea_co2microp(ig,l)*
	688	c & (pplev(ig,l) - pplev(ig,l+1))/g
	689	dmice(ig,l)= 0.!dmice(ig,l) + zcondicea(ig,l)*ptimestep
	690	pdtc(ig,l)=0.
	691	ENDDO
	692	ENDIF
	693
	694	ENDDO!of Do j=1,XXX
[38]	695
[1996]	696	ENDDO !of Do ig=1,ngrid
[38]	697
[473]	698	pdtsrf(:)=(ztsrf2(:)-ptsrf(:))/ptimestep
[669]	699
[660]	700	DO ig=1,ngrid ! computing sensible heat flux (atm => surface)
	701	sensibFlux(ig)=cppzb(ig,1)/ptimestep(zhs(ig,1)-ztsrf2(ig))
	702	ENDDO
[473]	703
[38]	704	c-----------------------------------------------------------------------
	705	c TRACERS
	706	c -------
	707
	708	if(tracer) then
	709
	710	c Using the wind modified by friction for lifting and sublimation
	711	c ----------------------------------------------------------------
	712
[529]	713	! This is computed above and takes into account surface-atmosphere flux
	714	! enhancement by subgrid gustiness and atmospheric-stability related
	715	! variations of transfer coefficients.
	716
	717	! DO ig=1,ngrid
	718	! zu2(ig)=zu(ig,1)zu(ig,1)+zv(ig,1)zv(ig,1)
	719	! zcdv(ig)=zcdv_true(ig)*sqrt(zu2(ig))
	720	! zcdh(ig)=zcdh_true(ig)*sqrt(zu2(ig))
	721	! ENDDO
	722
[38]	723	c Calcul du flux vertical au bas de la premiere couche (dust) :
	724	c -----------------------------------------------------------
[1047]	725	do ig=1,ngrid
[38]	726	rho(ig) = zb0(ig,1) /ptimestep
	727	c zb(ig,1) = 0.
	728	end do
	729	c Dust lifting:
	730	if (lifting) then
[310]	731	#ifndef MESOSCALE
[38]	732	if (doubleq.AND.submicron) then
	733	do ig=1,ngrid
	734	c if(co2ice(ig).lt.1) then
	735	pdqsdif(ig,igcm_dust_mass) =
	736	& -alpha_lift(igcm_dust_mass)
	737	pdqsdif(ig,igcm_dust_number) =
	738	& -alpha_lift(igcm_dust_number)
	739	pdqsdif(ig,igcm_dust_submicron) =
	740	& -alpha_lift(igcm_dust_submicron)
	741	c end if
	742	end do
	743	else if (doubleq) then
[1974]	744	if (dustinjection.eq.0) then !injection scheme 0 (old)
	745	!or 2 (injection in CL)
	746	do ig=1,ngrid
[1455]	747	if(co2ice(ig).lt.1) then ! pas de soulevement si glace CO2
[38]	748	pdqsdif(ig,igcm_dust_mass) =
	749	& -alpha_lift(igcm_dust_mass)
	750	pdqsdif(ig,igcm_dust_number) =
[520]	751	& -alpha_lift(igcm_dust_number)
	752	end if
[1974]	753	end do
	754	elseif(dustinjection.eq.1)then ! dust injection scheme = 1 injection from surface
	755	do ig=1,ngrid
	756	if(co2ice(ig).lt.1) then ! pas de soulevement si glace CO2
[2160]	757	IF((ti_injection_sol.LE.local_time(ig)).and.
	758	& (local_time(ig).LE.tf_injection_sol)) THEN
[1974]	759	if (rdstorm) then !Rocket dust storm scheme
	760	pdqsdif(ig,igcm_stormdust_mass) =
	761	& -alpha_lift(igcm_stormdust_mass)
	762	& *dustliftday(ig)
	763	pdqsdif(ig,igcm_stormdust_number) =
	764	& -alpha_lift(igcm_stormdust_number)
	765	& *dustliftday(ig)
	766	pdqsdif(ig,igcm_dust_mass)= 0.
	767	pdqsdif(ig,igcm_dust_number)= 0.
	768	else
	769	pdqsdif(ig,igcm_dust_mass)=
	770	& -dustliftday(ig)*
	771	& alpha_lift(igcm_dust_mass)
	772	pdqsdif(ig,igcm_dust_number)=
	773	& -dustliftday(ig)*
	774	& alpha_lift(igcm_dust_number)
	775	endif
	776	if (submicron) then
	777	pdqsdif(ig,igcm_dust_submicron) = 0.
	778	endif ! if (submicron)
	779	ELSE ! outside dust injection time frame
[2080]	780	pdqsdif(ig,igcm_dust_mass)= 0.
	781	pdqsdif(ig,igcm_dust_number)= 0.
	782	if (rdstorm) then
[1974]	783	pdqsdif(ig,igcm_stormdust_mass)= 0.
	784	pdqsdif(ig,igcm_stormdust_number)= 0.
[2080]	785	end if
[1974]	786	ENDIF
	787
	788	end if ! of if(co2ice(ig).lt.1)
	789	end do
	790	endif ! end if dustinjection
[38]	791	else if (submicron) then
	792	do ig=1,ngrid
	793	pdqsdif(ig,igcm_dust_submicron) =
	794	& -alpha_lift(igcm_dust_submicron)
	795	end do
	796	else
[1236]	797	#endif
[38]	798	call dustlift(ngrid,nlay,nq,rho,zcdh_true,zcdh,co2ice,
	799	& pdqsdif)
[1236]	800	#ifndef MESOSCALE
[38]	801	endif !doubleq.AND.submicron
[310]	802	#endif
[38]	803	else
	804	pdqsdif(1:ngrid,1:nq) = 0.
	805	end if
	806
	807	c OU calcul de la valeur de q a la surface (water) :
	808	c ----------------------------------------
	809
	810	c Inversion pour l'implicite sur q
[2515]	811	c Cas des traceurs qui ne sont pas h2o_vap
	812	c h2o_vap est traite plus loin avec un sous pas de temps
	813	c hdo_vap est traite ensuite car dependant de h2o_vap
[38]	814	c --------------------------------
[2515]	815
	816	do iq=1,nq !for all tracers except water vapor
	817	if ((.not. water).or.(.not. iq.eq.igcm_h2o_vap).or.
	818	& (.not. iq.eq.igcm_hdo_vap)) then
	819
	820
[2274]	821	zb(1:ngrid,2:nlay)=zkh(1:ngrid,2:nlay)*zb0(1:ngrid,2:nlay)
[2515]	822	zb(1:ngrid,1)=0
[38]	823
[2515]	824	DO ig=1,ngrid
	825	z1(ig)=1./(za(ig,nlay)+zb(ig,nlay))
	826	zc(ig,nlay)=za(ig,nlay)zq(ig,nlay,iq)z1(ig)
	827	zd(ig,nlay)=zb(ig,nlay)*z1(ig)
	828	ENDDO
	829
	830	DO ilay=nlay-1,2,-1
	831	DO ig=1,ngrid
	832	z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+
	833	$ zb(ig,ilay+1)*(1.-zd(ig,ilay+1)))
	834	zc(ig,ilay)=(za(ig,ilay)*zq(ig,ilay,iq)+
	835	$ zb(ig,ilay+1)zc(ig,ilay+1))z1(ig)
	836	zd(ig,ilay)=zb(ig,ilay)*z1(ig)
	837	ENDDO
	838	ENDDO
	839
	840	if ((iq.eq.igcm_h2o_ice)
	841	$ .or. (hdo.and.(iq.eq.igcm_hdo_ice) )) then
	842
	843	DO ig=1,ngrid
	844	z1(ig)=1./(za(ig,1)+zb(ig,1)+
	845	$ zb(ig,2)*(1.-zd(ig,2)))
	846	zc(ig,1)=(za(ig,1)*zq(ig,1,iq)+
	847	$ zb(ig,2)zc(ig,2)) z1(ig) !special case h2o_ice
	848	ENDDO
	849	else ! every other tracer
	850	DO ig=1,ngrid
	851	z1(ig)=1./(za(ig,1)+zb(ig,1)+
	852	$ zb(ig,2)*(1.-zd(ig,2)))
	853	zc(ig,1)=(za(ig,1)*zq(ig,1,iq)+
	854	$ zb(ig,2)*zc(ig,2) +
	855	$ (-pdqsdif(ig,iq)) ptimestep) z1(ig) !tracer flux from surface
	856	ENDDO
	857	endif !((iq.eq.igcm_h2o_ice)
	858	c Starting upward calculations for simple mixing of tracer (dust)
	859	DO ig=1,ngrid
	860	zq(ig,1,iq)=zc(ig,1)
	861	DO ilay=2,nlay
	862	zq(ig,ilay,iq)=zc(ig,ilay)+zd(ig,ilay)*zq(ig,ilay-1,iq)
	863	ENDDO
	864	ENDDO
	865	endif! ((.not. water).or.(.not. iq.eq.igcm_h2o_vap)) then
	866	enddo ! of do iq=1,nq
	867
	868	c --------- h2o_vap --------------------------------
	869
	870
	871	c Traitement de la vapeur d'eau h2o_vap
	872	c Utilisation d'un sous pas de temps afin
	873	c de decrire le flux de chaleur latente
	874
	875
	876	do iq=1,nq
[2312]	877	if ((water).and.(iq.eq.igcm_h2o_vap)) then
[2515]	878
	879
	880	DO ig=1,ngrid
	881	zqsurf(ig)=pqsurf(ig,igcm_h2o_ice)
	882	ENDDO ! ig=1,ngrid
	883
	884	c make_tsub : sous pas de temps adaptatif
	885	c la subroutine est a la fin du fichier
	886
	887	call make_tsub(ngrid,pdtsrf,zqsurf,
	888	& ptimestep,dtmax,watercaptag,
	889	& nsubtimestep)
	890
	891	c Calculation for turbulent exchange with the surface (for ice)
	892	c initialization of ztsrf, which is surface temperature in
	893	c the subtimestep.
	894	DO ig=1,ngrid
	895	subtimestep = ptimestep/nsubtimestep(ig)
	896	ztsrf(ig)=ptsrf(ig) ! +pdtsrf(ig)*subtimestep
	897
	898	c Debut du sous pas de temps
	899
	900	DO tsub=1,nsubtimestep(ig)
	901
	902	c C'est parti !
	903
	904	zb(1:ngrid,2:nlay)=zkh(1:ngrid,2:nlay)*zb0(1:ngrid,2:nlay)
	905	& /float(nsubtimestep(ig))
[2274]	906	zb(1:ngrid,1)=zcdv(1:ngrid)*zb0(1:ngrid,1)
[2515]	907	& /float(nsubtimestep(ig))
[2274]	908	zb(1:ngrid,1)=dryness(1:ngrid)*zb(1:ngrid,1)
[2515]	909
	910	z1(ig)=1./(za(ig,nlay)+zb(ig,nlay))
	911	zc(ig,nlay)=za(ig,nlay)zq(ig,nlay,iq)z1(ig)
	912	zd(ig,nlay)=zb(ig,nlay)*z1(ig)
	913	DO ilay=nlay-1,2,-1
	914	z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+
	915	$ zb(ig,ilay+1)*(1.-zd(ig,ilay+1)))
	916	zc(ig,ilay)=(za(ig,ilay)*zq(ig,ilay,iq)+
	917	$ zb(ig,ilay+1)zc(ig,ilay+1))z1(ig)
	918	zd(ig,ilay)=zb(ig,ilay)*z1(ig)
	919	ENDDO
	920	z1(ig)=1./(za(ig,1)+zb(ig,1)+
	921	$ zb(ig,2)*(1.-zd(ig,2)))
	922	zc(ig,1)=(za(ig,1)*zq(ig,1,iq)+
	923	$ zb(ig,2)zc(ig,2)) z1(ig)
[38]	924
[2531]	925	call watersat(1,ztsrf(ig),pplev(ig,1),qsat(ig))
[2515]	926	old_h2o_vap(ig)=zq(ig,1,igcm_h2o_vap)
	927	zd(ig,1)=zb(ig,1)*z1(ig)
	928	zq1temp(ig)=zc(ig,1)+ zd(ig,1)*qsat(ig)
	929
	930	zdqsdif(ig)=rho(ig)dryness(ig)zcdv(ig)
	931	& *(zq1temp(ig)-qsat(ig))
[2587]	932	c write(,)'subliming more than available frost: qsurf!'
	933	if(.not.watercaptag(ig)) then
	934	if ((-zdqsdif(ig)*subtimestep)
[2515]	935	& .gt.(zqsurf(ig))) then
[2587]	936	c pdqsdif > 0 : ice condensing
	937	c pdqsdif < 0 : ice subliming
	938	c write(,) "subliming more than available frost: qsurf!"
[2515]	939	zdqsdif(ig)=
	940	& -zqsurf(ig)/subtimestep
	941	c write(,)'flux vers le sol=',pdqsdif(ig,nq)
	942	z1(ig)=1./(za(ig,1)+ zb(ig,2)*(1.-zd(ig,2)))
	943	zc(ig,1)=(za(ig,1)*zq(ig,1,igcm_h2o_vap)+
[2587]	944	$ zb(ig,2)*zc(ig,2) +
	945	$ (-zdqsdif(ig)) subtimestep) z1(ig)
[2515]	946	zq1temp(ig)=zc(ig,1)
	947	endif !if .not.watercaptag(ig)
	948	endif ! if sublim more than surface
	949
	950	c Starting upward calculations for water :
	951	c Actualisation de h2o_vap dans le premier niveau
	952	zq(ig,1,igcm_h2o_vap)=zq1temp(ig)
[2587]	953
	954	c Take into account the H2O latent heat impact on the surface temperature
[2515]	955	if (latentheat_surfwater) then
	956	lh=(2834.3-0.28*(ztsrf(ig)-To)-
	957	& 0.004(ztsrf(ig)-To)(ztsrf(ig)-To))*1.e+3
[2587]	958	zdtsrf(ig)= zdqsdif(ig)*lh /pcapcal(ig)
[2515]	959	endif ! (latentheat_surfwater) then
	960
[2587]	961	DO ilay=2,nlay
	962	zq(ig,ilay,iq)=zc(ig,ilay)+zd(ig,ilay)*zq(ig,ilay-1,iq)
	963	ENDDO
[2515]	964
	965	c Subtimestep water budget :
	966
	967	ztsrf(ig) = ztsrf(ig)+(pdtsrf(ig) + zdtsrf(ig))
	968	& *subtimestep
	969	zqsurf(ig)= zqsurf(ig)+(
	970	& zdqsdif(ig))*subtimestep
	971
	972
	973	c We ensure that surface temperature can't rise above the solid domain if there
	974	c is still ice on the surface (oldschool)
	975	if(zqsurf(ig)
	976	& +zdqsdif(ig)*subtimestep
	977	& .gt.frost_albedo_threshold) ! if there is still ice, T cannot exceed To
	978	& zdtsrf(ig) = min(zdtsrf(ig),(To-ztsrf(ig))/subtimestep) ! ice melt case
	979
	980
[2587]	981
[2515]	982	c Fin du sous pas de temps
	983	ENDDO ! tsub=1,nsubtimestep
	984
[2587]	985	c Integration of subtimestep temp and water budget :
	986	c (btw could also compute the post timestep temp and ice
	987	c by simply adding the subtimestep trend instead of this)
[2515]	988	pdtsrf(ig)= (ztsrf(ig) -
	989	& ptsrf(ig))/ptimestep
	990	pdqsdif(ig,igcm_h2o_ice)=
	991	& (zqsurf(ig)- pqsurf(ig,igcm_h2o_ice))/ptimestep
	992
[2587]	993	c if subliming more than qsurf(ice) and on watercaptag, water
	994	c sublimates from watercap reservoir (dwatercap_dif is <0)
	995	if(watercaptag(ig)) then
	996	if ((-pdqsdif(ig,igcm_h2o_ice)*ptimestep)
	997	& .gt.(pqsurf(ig,igcm_h2o_ice))) then
	998	dwatercap_dif(ig)=pdqsdif(ig,igcm_h2o_ice)+
	999	& pqsurf(ig,igcm_h2o_ice)/ptimestep
	1000	pdqsdif(ig,igcm_h2o_ice)=
	1001	& - pqsurf(ig,igcm_h2o_ice)/ptimestep
	1002	endif! ((-pdqsdif(ig)*ptimestep)
	1003	endif !(watercaptag(ig)) then
	1004
[2515]	1005	ENDDO ! of DO ig=1,ngrid
	1006	END IF ! of IF ((water).and.(iq.eq.igcm_h2o_vap))
	1007
	1008	c --------- end of h2o_vap ----------------------------
	1009
	1010	c --------- hdo_vap -----------------------------------
	1011
	1012	c hdo_ice has already been with along h2o_ice
	1013	c amongst "normal" tracers (ie not h2o_vap)
	1014
	1015	if (hdo.and.(iq.eq.igcm_hdo_vap)) then
	1016	zb(1:ngrid,2:nlay)=zkh(1:ngrid,2:nlay)*zb0(1:ngrid,2:nlay)
	1017	zb(1:ngrid,1)=0
	1018
[38]	1019	DO ig=1,ngrid
	1020	z1(ig)=1./(za(ig,nlay)+zb(ig,nlay))
	1021	zc(ig,nlay)=za(ig,nlay)zq(ig,nlay,iq)z1(ig)
	1022	zd(ig,nlay)=zb(ig,nlay)*z1(ig)
	1023	ENDDO
[2515]	1024
[38]	1025	DO ilay=nlay-1,2,-1
	1026	DO ig=1,ngrid
	1027	z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+
	1028	$ zb(ig,ilay+1)*(1.-zd(ig,ilay+1)))
	1029	zc(ig,ilay)=(za(ig,ilay)*zq(ig,ilay,iq)+
	1030	$ zb(ig,ilay+1)zc(ig,ilay+1))z1(ig)
	1031	zd(ig,ilay)=zb(ig,ilay)*z1(ig)
	1032	ENDDO
	1033	ENDDO
	1034
[2312]	1035	CALL hdo_surfex(ngrid,nlay,nq,ptimestep,
[2593]	1036	& zt,pplay,zq,pqsurf,
	1037	& old_h2o_vap,qsat,pdqsdif,dwatercap_dif,
[2312]	1038	& hdoflux)
	1039	DO ig=1,ngrid
	1040	z1(ig)=1./(za(ig,1)+zb(ig,1)+
	1041	$ zb(ig,2)*(1.-zd(ig,2)))
	1042	zc(ig,1)=(za(ig,1)*zq(ig,1,iq)+
	1043	$ zb(ig,2)*zc(ig,2) +
	1044	$ (-hdoflux(ig)) ptimestep) z1(ig) !tracer flux from surface
	1045	ENDDO
	1046
[38]	1047	DO ig=1,ngrid
[2515]	1048	zq(ig,1,iq)=zc(ig,1)
	1049	DO ilay=2,nlay
	1050	zq(ig,ilay,iq)=zc(ig,ilay)+zd(ig,ilay)*zq(ig,ilay-1,iq)
	1051	ENDDO
[38]	1052	ENDDO
[2515]	1053	endif ! (hdo.and.(iq.eq.igcm_hdo_vap))
[2312]	1054
[2515]	1055	c --------- end of hdo ----------------------------
[38]	1056
[2515]	1057	enddo ! of do iq=1,nq
	1058	end if ! of if(tracer)
[38]	1059
[2515]	1060	c --------- end of tracers ----------------------------
[2312]	1061
[2260]	1062
[2312]	1063	C Diagnostic output for HDO
	1064	if (hdo) then
	1065	CALL WRITEDIAGFI(ngrid,'hdoflux',
	1066	& 'hdoflux',
	1067	& ' ',2,hdoflux)
	1068	CALL WRITEDIAGFI(ngrid,'h2oflux',
	1069	& 'h2oflux',
	1070	& ' ',2,h2oflux)
	1071	endif
	1072
[38]	1073	c-----------------------------------------------------------------------
	1074	c 8. calcul final des tendances de la diffusion verticale
	1075	c ----------------------------------------------------
	1076
	1077	DO ilev = 1, nlay
	1078	DO ig=1,ngrid
	1079	pdudif(ig,ilev)=( zu(ig,ilev)-
	1080	$ (pu(ig,ilev)+pdufi(ig,ilev)*ptimestep) )/ptimestep
	1081	pdvdif(ig,ilev)=( zv(ig,ilev)-
	1082	$ (pv(ig,ilev)+pdvfi(ig,ilev)*ptimestep) )/ptimestep
[473]	1083	hh = ph(ig,ilev)+pdhfi(ig,ilev)*ptimestep
	1084	$ + (latcond*dmice(ig,ilev)/cpp)/ppopsk(ig,ilev)
	1085	pdhdif(ig,ilev)=( zhs(ig,ilev)- hh )/ptimestep
[38]	1086	ENDDO
	1087	ENDDO
	1088
	1089	if (tracer) then
	1090	DO iq = 1, nq
	1091	DO ilev = 1, nlay
	1092	DO ig=1,ngrid
	1093	pdqdif(ig,ilev,iq)=(zq(ig,ilev,iq)-
	1094	$ (pq(ig,ilev,iq) + pdqfi(ig,ilev,iq)*ptimestep))/ptimestep
	1095	ENDDO
	1096	ENDDO
	1097	ENDDO
	1098	end if
	1099
	1100	c ** diagnostique final
	1101	c ------------------
	1102
	1103	IF(lecrit) THEN
	1104	PRINT*,'In vdif'
	1105	PRINT*,'Ts (t) and Ts (t+st)'
	1106	WRITE(*,'(a10,3a15)')
	1107	s 'theta(t)','theta(t+dt)','u(t)','u(t+dt)'
	1108	PRINT*,ptsrf(ngrid/2+1),ztsrf2(ngrid/2+1)
	1109	DO ilev=1,nlay
	1110	WRITE(*,'(4f15.7)')
[473]	1111	s ph(ngrid/2+1,ilev),zhs(ngrid/2+1,ilev),
[38]	1112	s pu(ngrid/2+1,ilev),zu(ngrid/2+1,ilev)
	1113
	1114	ENDDO
	1115	ENDIF
	1116
[1036]	1117	END SUBROUTINE vdifc
[1969]	1118
[2312]	1119	c====================================
	1120
[2515]	1121	SUBROUTINE make_tsub(naersize,dtsurf,qsurf,ptimestep,
	1122	$ dtmax,watercaptag,ntsub)
[2312]	1123
[2515]	1124	c Pas de temps adaptatif en estimant le taux de sublimation
	1125	c et en adaptant avec un critere "dtmax" du chauffage a accomoder
	1126	c dtmax est regle empiriquement (pour l'instant) a 0.5 K
	1127
	1128	integer,intent(in) :: naersize
	1129	real,intent(in) :: dtsurf(naersize)
	1130	real,intent(in) :: qsurf(naersize)
	1131	logical,intent(in) :: watercaptag(naersize)
	1132	real,intent(in) :: ptimestep
	1133	real,intent(in) :: dtmax
	1134	real :: ztsub(naersize)
	1135	integer :: i
	1136	integer,intent(out) :: ntsub(naersize)
	1137
	1138	do i=1,naersize
	1139	if ((qsurf(i).eq.0).and.
	1140	& (.not.watercaptag(i))) then
	1141	ntsub(i) = 1
	1142	else
	1143	ztsub(i) = ptimestep * dtsurf(i) / dtmax
	1144	ntsub(i) = ceiling(abs(ztsub(i)))
	1145	endif ! (qsurf(i).eq.0) then
	1146	c
	1147	c write(78,), dtsurfptimestep, dtsurf, ntsub
	1148	enddo! 1=1,ngrid
	1149
	1150
	1151
	1152	END SUBROUTINE make_tsub
[1969]	1153	END MODULE vdifc_mod

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