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sisvat_ts2.F @ 4976

Last change on this file since 4976 was 3792, checked in by evignon, 4 years ago
Ajout de INLANDSIS, nouvelle interface entre LMDZ et la neige de SISVAT Etienne, 04/01/2021
File size: 20.7 KB

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1	subroutine SISVAT_TS2
2	c #ES. (ETSo_0,ETSo_1,ETSo_d)
3
4	C +------------------------------------------------------------------------+
5	C \| MAR SISVAT_TS2 Mon 16-08-2009 MAR \|
6	C \| SubRoutine SISVAT_TS2 computes the Soil/Snow temperature and fluxes \|
7	C \| using the same method as in LMDZ for consistency. \|
8	C \| The corresponding LMDZ routines are soil (soil.F90) and calcul_fluxs \|
9	C \| (calcul_fluxs_mod.F90). \|
10	C +------------------------------------------------------------------------+
11	C \| \|
12	C \| \|
13	C \| PARAMETERS: klonv: Total Number of columns = \|
14	C \| ^^^^^^^^^^ = Total Number of grid boxes of surface type \|
15	C \| (land ice for now) \|
16	C \| \|
17	C \| INPUT: isnoSV = total Nb of Ice/Snow Layers \|
18	C \| ^^^^^ sol_SV : Downward Solar Radiation [W/m2] \|
19	C \| IRd_SV : Surface Downward Longwave Radiation [W/m2] \|
20	C \| VV__SV : SBL Top Wind Speed [m/s] \|
21	C \| TaT_SV : SBL Top Temperature [K] \|
22	C \| QaT_SV : SBL Top Specific Humidity [kg/kg] \|
23	C \| dzsnSV : Snow Layer Thickness [m] \|
24	C \| dt__SV : Time Step [s] \|
25	C \| \|
26	C \| SoSosv : Absorbed Solar Radiation by Surfac.(Normaliz)[-] \|
27	C \| Eso_sv : Soil+Snow Emissivity [-] \|
28	C \| ? rah_sv : Aerodynamic Resistance for Heat [s/m] \|
29	C \| \|
30	C \| dz1_SV : "inverse" layer thickness (centered) [1/m] \|
31	C \| dz2_SV : layer thickness (layer above (?)) [m] \|
32	C \| AcoHSV : coefficient for Enthalpy evolution, from atm. \|
33	C \| AcoHSV : coefficient for Enthalpy evolution, from atm. \|
34	C \| AcoQSV : coefficient for Humidity evolution, from atm. \|
35	C \| BcoQSV : coefficient for Humidity evolution, from atm. \|
36	C \| ps__SV : surface pressure [Pa] \|
37	C \| p1l_SV : 1st atmospheric layer pressure [Pa] \|
38	C \| cdH_SV : drag coeff Energy (?) \|
39	C \| rsolSV : Radiation balance surface [W/m2] \|
40	C \| lambSV : Coefficient for soil layer geometry [-] \|
41	C \| \|
42	C \| INPUT / TsisSV : Soil/Ice Temperatures (layers -nsol,-nsol+1,..,0)\|
43	C \| OUTPUT: & Snow Temperatures (layers 1,2,...,nsno) [K] \|
44	C \| ^^^^^^ rsolSV : Radiation balance surface [W/m2] \|
45	C \| \|
46	C \| OUTPUT: IRs_SV : Soil IR Radiation [W/m2] \|
47	C \| ^^^^^^ HSs_sv : Sensible Heat Flux [W/m2] \|
48	C \| HLs_sv : Latent Heat Flux [W/m2] \|
49	C \| TsfnSV : new surface temperature [K] \|
50	C \| Evp_sv : Evaporation [kg/m2] \|
51	C \| dSdTSV : Sensible Heat Flux temp. derivative [W/m2/K] \|
52	C \| dLdTSV : Latent Heat Flux temp. derivative [W/m2/K] \|
53	C \| \|
54	C \| ? ETSo_0 : Snow/Soil Energy Power, before Forcing [W/m2] \|
55	C \| ? ETSo_1 : Snow/Soil Energy Power, after Forcing [W/m2] \|
56	C \| ? ETSo_d : Snow/Soil Energy Power Forcing [W/m2] \|
57	C \| \|
58	C \|________________________________________________________________________\|
59
60	USE VAR_SV
61	USE VARdSV
62
63	USE VARySV
64	USE VARtSV
65	USE VARxSV
66	USE VARphy
67	USE indice_sol_mod
68
69
70	IMPLICIT NONE
71
72
73	C +--Global Variables
74	C + ================
75
76	INCLUDE "YOMCST.h"
77	INCLUDE "YOETHF.h"
78	INCLUDE "FCTTRE.h"
79	! INCLUDE "indicesol.h"
80	INCLUDE "comsoil.h"
81	! include "LMDZphy.inc"
82
83	C +--OUTPUT for Stand Alone NetCDF File
84	C + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
85	c #NC real*8 SOsoKL(klonv) ! Absorbed Solar Radiation
86	c #NC real*8 IRsoKL(klonv) ! Absorbed IR Radiation
87	c #NC real*8 HSsoKL(klonv) ! Absorbed Sensible Heat Flux
88	c #NC real*8 HLsoKL(klonv) ! Absorbed Latent Heat Flux
89	c #NC real*8 HLs_KL(klonv) ! Evaporation
90	c #NC real*8 HLv_KL(klonv) ! Transpiration
91	c #NC common/DumpNC/SOsoKL,IRsoKL
92	c #NC . ,HSsoKL,HLsoKL
93	c #NC . ,HLs_KL,HLv_KL
94
95	C +--Internal Variables
96	C + ==================
97
98	integer ig,jk,isl
99	real mu
100	real Tsrf(klonv) ! surface temperature as extrapolated from soil
101	real mug(klonv) !hj coef top layers
102	real ztherm_i(klonv),zdz2(klonv,-nsol:nsno),z1s
103	real pfluxgrd(klonv), pcapcal(klonv), cal(klonv)
104	real beta(klonv), dif_grnd(klonv)
105	real C_coef(klonv,-nsol:nsno),D_coef(klonv,-nsol:nsno)
106
107	REAL, DIMENSION(klonv) :: zx_mh, zx_nh, zx_oh
108	REAL, DIMENSION(klonv) :: zx_mq, zx_nq, zx_oq
109	REAL, DIMENSION(klonv) :: zx_pkh, zx_dq_s_dt, zx_qsat, zx_coef
110	REAL, DIMENSION(klonv) :: zx_sl, zx_k1
111	REAL, DIMENSION(klonv) :: d_ts
112	REAL :: zdelta, zcvm5, zx_qs, zcor, zx_dq_s_dh
113	REAL :: qsat_new, q1_new
114	C REAL, PARAMETER :: t_grnd = 271.35, t_coup = 273.15
115	C REAL, PARAMETER :: max_eau_sol = 150.0
116	REAL, DIMENSION(klonv) :: IRs__D, dIRsdT
117
118
119	REAL t_grnd ! not used
120	parameter(t_grnd = 271.35) !
121	REAL t_coup ! distinguish evap/sublimation
122	parameter(t_coup = 273.15) !
123	REAL max_eau_sol
124	parameter(max_eau_sol = 150.0)
125
126
127	! write(,)'T check'
128	!
129	! DO ig = 1,knonv
130	! DO jk = 1,isnoSV(ig) !nsno
131	! IF (TsisSV(ig,jk) <= 1.) THEN !hj check
132	! TsisSV(ig,jk) = TsisSV(ig,isnoSV(ig))
133	! ENDIF
134	!
135	! IF (TsisSV(ig,jk) <= 1.) THEN !hj check
136	! TsisSV(ig,jk) = 273.15
137	! ENDIF
138	! END DO
139	! END DO
140
141	C!=======================================================================
142	C! I. First part: corresponds to soil.F90 in LMDZ
143	C!=======================================================================
144
145	DO ig = 1,knonv
146	DO jk =1,isnoSV(ig)
147	dz2_SV(ig,jk)=dzsnSV(ig,jk)
148	C! use arithmetic center between layers to derive dz1 for snow layers for simplicity:
149	dz1_SV(ig,jk)=2./(dzsnSV(ig,jk)+dzsnSV(ig,jk-1))
150	ENDDO
151	ENDDO
152
153	DO ig = 1,knonv
154	ztherm_i(ig) = inertie_lic
155	IF (isnoSV(ig) > 0) ztherm_i(ig) = inertie_sno
156	ENDDO
157
158	C!-----------------------------------------------------------------------
159	C! 1)
160	C! Calculation of Cgrf and Dgrd coefficients using soil temperature from
161	C! previous time step.
162	C!
163	C! These variables are recalculated on the local compressed grid instead
164	C! of saved in restart file.
165	C!-----------------------------------------------------------------------
166	DO ig=1,knonv
167	DO jk=-nsol,nsno
168	zdz2(ig,jk)=dz2_SV(ig,jk)/dt__SV !ptimestep
169	ENDDO
170	ENDDO
171
172	DO ig=1,knonv
173	z1s = zdz2(ig,-nsol)+dz1_SV(ig,-nsol+1)
174	C_coef(ig,-nsol+1)=zdz2(ig,-nsol)*TsisSV(ig,-nsol)/z1s
175	D_coef(ig,-nsol+1)=dz1_SV(ig,-nsol+1)/z1s
176	ENDDO
177
178	DO ig=1,knonv
179	DO jk=-nsol+1,isnoSV(ig)-1,1
180	z1s = 1./(zdz2(ig,jk)+dz1_SV(ig,jk+1)+dz1_SV(ig,jk) &
181	& *(1.-D_coef(ig,jk)))
182	C_coef(ig,jk+1)= &
183	& (TsisSV(ig,jk)*zdz2(ig,jk) &
184	& +dz1_SV(ig,jk)C_coef(ig,jk)) z1s
185	D_coef(ig,jk+1)=dz1_SV(ig,jk+1)*z1s
186	ENDDO
187	ENDDO
188
189	C!-----------------------------------------------------------------------
190	C! 2)
191	C! Computation of the soil temperatures using the Cgrd and Dgrd
192	C! coefficient computed above
193	C!
194	C!-----------------------------------------------------------------------
195	C! Extrapolate surface Temperature !hj check
196	mu=1./((2.1.5-1.)/(2.(0.5)-1.)-1.)
197
198	! IF (knonv>0) THEN
199	! DO ig=1,8
200	! write(,)ig,'sisvat: Tsis ',TsisSV(ig,isnoSV(ig))
201	! write(,)'max-1 ',TsisSV(ig,isnoSV(ig)-1)
202	! write(,)'max-2 ',TsisSV(ig,isnoSV(ig)-2)
203	! write(,)'0 ',TsisSV(ig,0)
204	!! write(,)min(max(isnoSV(ig),0),1),max(1-isnoSV(ig),0)
205	! ENDDO
206	! END IF
207
208	DO ig=1,knonv
209	IF (isnoSV(ig).GT.0) THEN
210	IF (isnoSV(ig).GT.1) THEN
211	mug(ig)=1./(1.+dzsnSV(ig,isnoSV(ig)-1)/dzsnSV(ig,isnoSV(ig))) !mu
212	ELSE
213	mug(ig) = 1./(1.+dzsnSV(ig,isnoSV(ig)-1)/dz_dSV(0)) !mu
214	ENDIF
215	ELSE
216	mug(ig) = lambSV
217	ENDIF
218
219	IF (mug(ig) .LE. 0.05) THEN
220	write(,)'Attention mu low', mug(ig)
221	ENDIF
222	IF (mug(ig) .GE. 0.98) THEN
223	write(,)'Attention mu high', mug(ig)
224	ENDIF
225
226	Tsrf(ig)=(1.5TsisSV(ig,isnoSV(ig))-0.5TsisSV(ig,isnoSV(ig)-1))&
227	& *min(max(isnoSV(ig),0),1)+ &
228	& ((mug(ig)+1)TsisSV(ig,0)-mug(ig)TsisSV(ig,-1)) &
229	& *max(1-isnoSV(ig),0)
230	ENDDO
231
232
233
234	C! Surface temperature
235	DO ig=1,knonv
236	TsisSV(ig,isnoSV(ig))=(mug(ig)*C_coef(ig,isnoSV(ig))+Tsf_SV(ig))/ &
237	& (mug(ig)*(1.-D_coef(ig,isnoSV(ig)))+1.)
238	ENDDO
239
240	C! Other temperatures
241	DO ig=1,knonv
242	DO jk=isnoSV(ig),-nsol+1,-1
243	TsisSV(ig,jk-1)=C_coef(ig,jk)+D_coef(ig,jk) &
244	& *TsisSV(ig,jk)
245	ENDDO
246	ENDDO
247	C write(,)ig,'Tsis',TsisSV(ig,0)
248
249	C IF (indice == is_sic) THEN
250	C DO ig = 1,knonv
251	C TsisSV(ig,-nsol) = RTT - 1.8
252	C END DO
253	C ENDIF
254
255	CC !hj new 11 03 2010
256	DO ig=1,knonv
257	isl = isnoSV(ig)
258	C dIRsdT(ig) = Eso_sv(ig)* SteBo * 4. & ! - d(IR)/d(T)
259	C & * Tsf_SV(ig) & !T TsisSV(ig,isl) !
260	C & * Tsf_SV(ig) & !TsisSV(ig,isl) !
261	C & * Tsf_SV(ig) !TsisSV(ig,isl) !
262	C IRs__D(ig) = dIRsdT(ig)* Tsf_SV(ig) * 0.75 !TsisSV(ig,isl) * 0.75 !:
263	dIRsdT(ig) = Eso_sv(ig)* StefBo * 4. & ! - d(IR)/d(T)
264	& * TsisSV(ig,isl) & !
265	& * TsisSV(ig,isl) & !
266	& * TsisSV(ig,isl) & !
267	IRs__D(ig) = dIRsdT(ig)* TsisSV(ig,isl) * 0.75 !:
268	END DO
269	!hj
270	C!-----------------------------------------------------------------------
271	C! 3)
272	C! Calculate the Cgrd and Dgrd coefficient corresponding to actual soil
273	C! temperature
274	C!-----------------------------------------------------------------------
275	DO ig=1,knonv
276	z1s = zdz2(ig,-nsol)+dz1_SV(ig,-nsol+1)
277	C_coef(ig,-nsol+1) = zdz2(ig,-nsol)*TsisSV(ig,-nsol)/z1s
278	D_coef(ig,-nsol+1) = dz1_SV(ig,-nsol+1)/z1s
279	ENDDO
280
281	DO ig=1,knonv
282	DO jk=-nsol+1,isnoSV(ig)-1,1
283	z1s = 1./(zdz2(ig,jk)+dz1_SV(ig,jk+1)+dz1_SV(ig,jk) &
284	& *(1.-D_coef(ig,jk)))
285	C_coef(ig,jk+1) = (TsisSV(ig,jk)*zdz2(ig,jk)+ &
286	& dz1_SV(ig,jk)C_coef(ig,jk)) z1s
287	D_coef(ig,jk+1) = dz1_SV(ig,jk+1)*z1s
288	ENDDO
289	ENDDO
290
291	C!-----------------------------------------------------------------------
292	C! 4)
293	C! Computation of the surface diffusive flux from ground and
294	C! calorific capacity of the ground
295	C!-----------------------------------------------------------------------
296	DO ig=1,knonv
297	C! (pfluxgrd)
298	pfluxgrd(ig) = ztherm_i(ig)dz1_SV(ig,isnoSV(ig)) &
299	& (C_coef(ig,isnoSV(ig))+(D_coef(ig,isnoSV(ig))-1.) &
300	& *TsisSV(ig,isnoSV(ig)))
301	C! (pcapcal)
302	pcapcal(ig) = ztherm_i(ig)* &
303	& (dz2_SV(ig,isnoSV(ig))+dt__SV*(1.-D_coef(ig,isnoSV(ig))) &
304	& *dz1_SV(ig,isnoSV(ig)))
305	z1s = mug(ig)*(1.-D_coef(ig,isnoSV(ig)))+1.
306	pcapcal(ig) = pcapcal(ig)/z1s
307	pfluxgrd(ig) = ( pfluxgrd(ig) &
308	& + pcapcal(ig) * (TsisSV(ig,isnoSV(ig)) * z1s &
309	& - mug(ig)* C_coef(ig,isnoSV(ig)) &
310	& - Tsf_SV(ig)) /dt__SV )
311	ENDDO
312
313
314	cal(1:knonv) = RCPD / pcapcal(1:knonv)
315	rsolSV(1:knonv) = rsolSV(1:knonv) + pfluxgrd(1:knonv)
316	C!=======================================================================
317	C! II. Second part: corresponds to calcul_fluxs_mod.F90 in LMDZ
318	C!=======================================================================
319
320	Evp_sv = 0.
321	c #NC HSsoKL=0.
322	c #NC HLsoKL=0.
323	dSdTSV = 0.
324	dLdTSV = 0.
325
326	beta(:) = 1.0
327	dif_grnd(:) = 0.0
328
329	C! zx_qs = qsat en kg/kg
330	C!********************************************************************x*************
331
332	DO ig = 1,knonv
333	IF (ps__SV(ig).LT.1.) THEN
334	! write(,)'ig',ig,'ps',ps__SV(ig)
335	ps__SV(ig)=max(ps__SV(ig),1.e-8)
336	ENDIF
337	IF (p1l_SV(ig).LT.1.) THEN
338	! write(,)'ig',ig,'p1l',p1l_SV(ig)
339	p1l_SV(ig)=max(p1l_SV(ig),1.e-8)
340	ENDIF
341	IF (TaT_SV(ig).LT.180.) THEN
342	! write(,)'ig',ig,'TaT',TaT_SV(ig)
343	TaT_SV(ig)=max(TaT_SV(ig),180.)
344	ENDIF
345	IF (QaT_SV(ig).LT.1.e-8) THEN
346	! write(,)'ig',ig,'QaT',QaT_SV(ig)
347	QaT_SV(ig)=max(QaT_SV(ig),1.e-8)
348	ENDIF
349	IF (Tsf_SV(ig).LT.100.) THEN
350	! write(,)'ig',ig,'Tsf',Tsf_SV(ig)
351	Tsf_SV(ig)=max(Tsf_SV(ig),180.)
352	ENDIF
353	IF (Tsf_SV(ig).GT.500.) THEN
354	! write(,)'ig',ig,'Tsf',Tsf_SV(ig)
355	Tsf_SV(ig)=min(Tsf_SV(ig),400.)
356	ENDIF
357	! IF (Tsrf(ig).LT.1.) THEN
358	!! write(,)'ig',ig,'Tsrf',Tsrf(ig)
359	! Tsrf(ig)=max(Tsrf(ig),TaT_SV(ig)-20.)
360	! ENDIF
361	IF (cdH_SV(ig).LT.1.e-10) THEN
362	! IF (ig.le.3) write(,)'ig',ig,'cdH',cdH_SV(ig)
363	cdH_SV(ig)=.5
364	ENDIF
365	ENDDO
366
367
368	DO ig = 1,knonv
369	zx_pkh(ig) = 1. ! (ps__SV(ig)/ps__SV(ig))**RKAPPA
370	IF (thermcep) THEN
371	zdelta=MAX(0.,SIGN(1.,rtt-Tsf_SV(ig)))
372	zcvm5 = R5LESLhvH2O(1.-zdelta) + R5IESLhsH2Ozdelta
373	zcvm5 = zcvm5 / RCPD / (1.0+RVTMP2*QaT_SV(ig))
374	zx_qs= r2es * FOEEW(Tsf_SV(ig),zdelta)/ps__SV(ig)
375	zx_qs=MIN(0.5,zx_qs)
376	!write(,)'zcor',retv*zx_qs
377	zcor=1./(1.-retv*zx_qs)
378	zx_qs=zx_qs*zcor
379	zx_dq_s_dh = FOEDE(Tsf_SV(ig),zdelta,zcvm5,zx_qs,zcor) &
380	& /LhvH2O / zx_pkh(ig)
381	ELSE
382	IF (Tsf_SV(ig).LT.t_coup) THEN
383	zx_qs = qsats(Tsf_SV(ig)) / ps__SV(ig)
384	zx_dq_s_dh = dqsats(Tsf_SV(ig),zx_qs)/LhvH2O &
385	& / zx_pkh(ig)
386	ELSE
387	zx_qs = qsatl(Tsf_SV(ig)) / ps__SV(ig)
388	zx_dq_s_dh = dqsatl(Tsf_SV(ig),zx_qs)/LhvH2O &
389	& / zx_pkh(ig)
390	ENDIF
391	ENDIF
392	zx_dq_s_dt(ig) = RCPD * zx_pkh(ig) * zx_dq_s_dh
393	zx_qsat(ig) = zx_qs
394	C zx_coef(ig) = cdH_SV(ig) * &
395	C & (1.0+SQRT(u1lay(ig)2+v1lay(ig)2)) * &
396	C & p1l_SV(ig)/(RD*t1lay(ig))
397	zx_coef(ig) = cdH_SV(ig) * &
398	& (1.0+VV__SV(ig)) * &
399	& p1l_SV(ig)/(RD*TaT_SV(ig))
400
401	ENDDO
402
403
404	C! === Calcul de la temperature de surface ===
405	C! zx_sl = chaleur latente d'evaporation ou de sublimation
406	C!****************************************************************************************
407
408	DO ig = 1,knonv
409	zx_sl(ig) = LhvH2O
410	IF (Tsf_SV(ig) .LT. RTT) zx_sl(ig) = LhsH2O
411	zx_k1(ig) = zx_coef(ig)
412	ENDDO
413
414
415	DO ig = 1,knonv
416	C! Q
417	zx_oq(ig) = 1. - (beta(ig) * zx_k1(ig) * BcoQSV(ig) * dt__SV)
418	zx_mq(ig) = beta(ig) * zx_k1(ig) * &
419	& (AcoQSV(ig) - zx_qsat(ig) + &
420	& zx_dq_s_dt(ig) * Tsf_SV(ig)) &
421	& / zx_oq(ig)
422	zx_nq(ig) = beta(ig) * zx_k1(ig) * (-1. * zx_dq_s_dt(ig)) &
423	& / zx_oq(ig)
424
425	C! H
426	zx_oh(ig) = 1. - (zx_k1(ig) * BcoHSV(ig) * dt__SV)
427	zx_mh(ig) = zx_k1(ig) * AcoHSV(ig) / zx_oh(ig)
428	zx_nh(ig) = - (zx_k1(ig) * RCPD * zx_pkh(ig))/ zx_oh(ig)
429
430	C! surface temperature
431	TsfnSV(ig) = (Tsf_SV(ig) + cal(ig)/RCPD * zx_pkh(ig) * dt__SV * &
432	& (rsolSV(ig) + zx_mh(ig) + zx_sl(ig) * zx_mq(ig)) &
433	& + dif_grnd(ig) * t_grnd * dt__SV)/ &
434	& ( 1. - dt__SV * cal(ig)/(RCPD * zx_pkh(ig)) * &
435	& (zx_nh(ig) + zx_sl(ig) * zx_nq(ig)) &
436	& + dt__SV * dif_grnd(ig))
437
438	!hj rajoute 22 11 2010 tuning...
439	TsfnSV(ig) = min(RTT+0.02,TsfnSV(ig))
440
441	d_ts(ig) = TsfnSV(ig) - Tsf_SV(ig)
442
443
444	C!== flux_q est le flux de vapeur d'eau: kg/(m**2 s) positive vers bas
445	C!== flux_t est le flux de cpt (energie sensible): j/(m**2 s)
446	Evp_sv(ig) = - zx_mq(ig) - zx_nq(ig) * TsfnSV(ig)
447	HLs_sv(ig) = - Evp_sv(ig) * zx_sl(ig)
448	HSs_sv(ig) = zx_mh(ig) + zx_nh(ig) * TsfnSV(ig)
449
450	C! Derives des flux dF/dTs (W m-2 K-1):
451	dSdTSV(ig) = zx_nh(ig)
452	dLdTSV(ig) = zx_sl(ig) * zx_nq(ig)
453
454
455	!hj new 11 03 2010
456	isl = isnoSV(ig)
457	! TsisSV(ig,isl) = TsfnSV(ig)
458	IRs_SV(ig) = IRs__D(ig) &!
459	& - dIRsdT(ig) * TsfnSV(ig) !TsisSV(ig,isl)? !
460
461	! hj
462	c #NC SOsoKL(ig) = sol_SV(ig) * SoSosv(ig) ! Absorbed Sol.
463	c #NC IRsoKL(ig) = IRs_SV(ig) & !Up Surf. IR
464	c #NC& + tau_sv(ig) IRd_SV(ig)Eso_sv(ig) & !Down Atm IR
465	c #NC& -(1.0-tau_sv(ig)) 0.5IRv_sv(ig) ! Down Veg IR
466	c #NC HLsoKL(ig) = HLs_sv(ig)
467	c #NC HSsoKL(ig) = HSs_sv(ig)
468	c #NC HLs_KL(ig) = Evp_sv(ig)
469
470	C! Nouvelle valeure de l'humidite au dessus du sol
471	qsat_new=zx_qsat(ig) + zx_dq_s_dt(ig) * d_ts(ig)
472	q1_new = AcoQSV(ig) - BcoQSV(ig)* Evp_sv(ig)*dt__SV
473	QaT_SV(ig)=q1_new(1.-beta(ig)) + beta(ig)qsat_new
474
475	ENDDO
476
477	end ! subroutine SISVAT_TS2

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