diff --git a/src/SURFEX/isba.F90 b/src/SURFEX/isba.F90
index 9e77a631e005757c5b156ae6046f0f797110081a..2e6f51255f0c2156007f007fe1bb73722f176cf0 100644
--- a/src/SURFEX/isba.F90
+++ b/src/SURFEX/isba.F90
@@ -482,6 +482,7 @@ CALL SOILSTRESS(IO%CISBA, ZF2, KK, PK, PEK, ZF2WGHT, ZF5 )
! ---------------------------------
!
IF(OMEB)THEN
+ IF (PRESENT(PBLOWSNW_FLUX)) THEN
CALL ISBA_MEB(IO, KK, PK, PEK, DK, DEK, DMK, G, AG, &
TPTIME, OMEB, GSHADE, HIMPLICIT_WIND, PTSTEP, &
ZSOILHCAPZ, ZSOILCONDZ, ZFROZEN1, PPS, PZENITH, &
@@ -496,7 +497,24 @@ IF(OMEB)THEN
PHU_AGG, PAC_AGG, ZDELHEATV_SFC, ZDELHEATG_SFC, ZDELHEATG, &
ZDELHEATN, ZDELHEATN_SFC, ZGSFCSNOW, PTDEEP_A, PDEEP_FLUX, &
ZRI3L, ZSNOW_THRUFAL, ZSNOW_THRUFAL_SOIL, ZEVAPCOR, ZSUBVCOR, &
- ZLITCOR, ZSNOWSFCH, ZQS3L,PBLOWSNW_FLUX,PBLOWSNW_CONC, PRN_SHADE, PRN_SUNLIT )
+ ZLITCOR, ZSNOWSFCH, ZQS3L,PRN_SHADE, PRN_SUNLIT,PBLOWSNW_FLUX,PBLOWSNW_CONC )
+ ELSE
+ CALL ISBA_MEB(IO, KK, PK, PEK, DK, DEK, DMK, G, AG, &
+ TPTIME, OMEB, GSHADE, HIMPLICIT_WIND, PTSTEP, &
+ ZSOILHCAPZ, ZSOILCONDZ, ZFROZEN1, PPS, PZENITH, &
+ PSCA_SW, PSW_RAD, PVMOD, PRR, PSR, PRHOA, PTA, PQA, &
+ PDIRCOSZW, PEXNS, PEXNA, PPET_A_COEF, PPET_B_COEF, &
+ PPEQ_A_COEF, PPEQ_B_COEF, PPEW_A_COEF, PPEW_B_COEF, &
+ PZREF, PUREF, PZ0G_WITHOUT_SNOW, PZ0_MEBV, PZ0H_MEBV,&
+ PZ0EFF_MEBV, PZ0_MEBN, PZ0H_MEBN, PZ0EFF_MEBN, &
+ PALBNIR_TVEG, PALBVIS_TVEG,PALBNIR_TSOIL, PALBVIS_TSOIL, &
+ PABC, PIACAN, PPOI, PCSP, PRESP_BIOMASS_INST, PPALPHAN, &
+ ZF2, PLW_RAD, ZGRNDFLUX, ZFLSN_COR, PUSTAR, ZEMIST, &
+ PHU_AGG, PAC_AGG, ZDELHEATV_SFC, ZDELHEATG_SFC, ZDELHEATG, &
+ ZDELHEATN, ZDELHEATN_SFC, ZGSFCSNOW, PTDEEP_A, PDEEP_FLUX, &
+ ZRI3L, ZSNOW_THRUFAL, ZSNOW_THRUFAL_SOIL, ZEVAPCOR, ZSUBVCOR, &
+ ZLITCOR, ZSNOWSFCH, ZQS3L,PRN_SHADE, PRN_SUNLIT )
+ ENDIF
ELSE
!
@@ -526,7 +544,8 @@ ELSE
!* 7.0 Explicit snow scheme
! --------------------
!
- CALL SNOW3L_ISBA(IO, G, PK, PEK, DK, DEK, DMK, OMEB, HIMPLICIT_WIND, &
+ IF (PRESENT(PBLOWSNW_FLUX)) THEN
+ CALL SNOW3L_ISBA(IO, G, PK, PEK, DK, DEK, DMK, OMEB, HIMPLICIT_WIND, &
TPTIME, PTSTEP, PK%XVEGTYPE_PATCH, PEK%XTG, DMK%XCT, ZSOILHCAPZ, &
ZSOILCONDZ(:,1), PPS, PTA, PSW_RAD, PQA, PVMOD, PLW_RAD, PRR, &
PSR, PRHOA, PUREF, PEXNS, PEXNA, PDIRCOSZW, PZREF, PEK%XSNOWFREE_ALB, &
@@ -535,6 +554,16 @@ ELSE
ZGSFCSNOW, ZEVAPCOR, ZLES3L, ZLEL3L, ZEVAP3L, ZSNOWSFCH, ZDELHEATN, &
ZDELHEATN_SFC, ZRI3L, PZENITH, ZDELHEATG, ZDELHEATG_SFC, ZQS3L, &
PBLOWSNW_FLUX,PBLOWSNW_CONC )
+ ELSE
+ CALL SNOW3L_ISBA(IO, G, PK, PEK, DK, DEK, DMK, OMEB, HIMPLICIT_WIND, &
+ TPTIME, PTSTEP, PK%XVEGTYPE_PATCH, PEK%XTG, DMK%XCT, ZSOILHCAPZ, &
+ ZSOILCONDZ(:,1), PPS, PTA, PSW_RAD, PQA, PVMOD, PLW_RAD, PRR, &
+ PSR, PRHOA, PUREF, PEXNS, PEXNA, PDIRCOSZW, PZREF, PEK%XSNOWFREE_ALB, &
+ PK%XDG, PK%XDZG, PPEW_A_COEF, PPEW_B_COEF, PPET_A_COEF, PPEQ_A_COEF, &
+ PPET_B_COEF, PPEQ_B_COEF, ZSNOW_THRUFAL_SOIL, ZGRNDFLUX, ZFLSN_COR, &
+ ZGSFCSNOW, ZEVAPCOR, ZLES3L, ZLEL3L, ZEVAP3L, ZSNOWSFCH, ZDELHEATN, &
+ ZDELHEATN_SFC, ZRI3L, PZENITH, ZDELHEATG, ZDELHEATG_SFC, ZQS3L)
+ ENDIF
! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
!
!* 8.0 Plant stress, stomatal resistance and, possibly, CO2 assimilation
diff --git a/src/SURFEX/isba_meb.F90 b/src/SURFEX/isba_meb.F90
index 7f77220995f38d1f45a98a9200eded1518a4380e..40b95a3cae7d8f72d21f3bfa0447227573e318e2 100644
--- a/src/SURFEX/isba_meb.F90
+++ b/src/SURFEX/isba_meb.F90
@@ -18,7 +18,7 @@
PDELHEATN, PDELHEATN_SFC, PRESTOREN, PTDEEP_A, PDEEP_FLUX,&
PRISNOW, PSNOW_THRUFAL, PSNOW_THRUFAL_SOIL, PEVAPCOR, &
PSUBVCOR, PLITCOR, PSNOWSFCH, PQSNOW, &
- PBLOWSNW_FLUX, PBLOWSNW_CONC,PRN_SHADE, PRN_SUNLIT)
+ PRN_SHADE, PRN_SUNLIT,PBLOWSNW_FLUX, PBLOWSNW_CONC )
! ##########################################################################
!
!
@@ -927,7 +927,8 @@ ZVEGFACT(:) = ZSIGMA_F(:)*(1.0-PPALPHAN(:)*PEK%XPSN(:))
!* 10.0 Explicit snow scheme (MEB: impose surface fluxes as upper BC)
! ----------------------------------------------------------------
!
- CALL SNOW3L_ISBA(IO, G, PK, PEK, DK, DEK, DMK, OMEB, HIMPLICIT_WIND, &
+ IF (PRESENT(PBLOWSNW_FLUX)) THEN
+ CALL SNOW3L_ISBA(IO, G, PK, PEK, DK, DEK, DMK, OMEB, HIMPLICIT_WIND, &
TPTIME, PTSTEP, PK%XVEGTYPE_PATCH, ZTGL, ZCTSFC, &
ZSOILHCAPZ, ZSOILCONDZ(:,1), PPS, PTA, PSW_RAD, PQA, &
PVMOD, PLW_RAD, ZRRSFC, DEK%XSR_GN, PRHOA, ZUREF, PEXNS, &
@@ -937,6 +938,19 @@ ZVEGFACT(:) = ZSIGMA_F(:)*(1.0-PPALPHAN(:)*PEK%XPSN(:))
PRESTOREN, PEVAPCOR, DEK%XLES, DEK%XLESL, ZEVAP3L, PSNOWSFCH, &
PDELHEATN, PDELHEATN_SFC, PRISNOW, PZENITH, PDELHEATG, &
PDELHEATG_SFC, PQSNOW,PBLOWSNW_FLUX,PBLOWSNW_CONC )
+ ELSE
+ CALL SNOW3L_ISBA(IO, G, PK, PEK, DK, DEK, DMK, OMEB, HIMPLICIT_WIND, &
+ TPTIME, PTSTEP, PK%XVEGTYPE_PATCH, ZTGL, ZCTSFC, &
+ ZSOILHCAPZ, ZSOILCONDZ(:,1), PPS, PTA, PSW_RAD, PQA, &
+ PVMOD, PLW_RAD, ZRRSFC, DEK%XSR_GN, PRHOA, ZUREF, PEXNS, &
+ PEXNA, PDIRCOSZW, ZZREF, ZALBG, ZD_G, ZDZG, PPEW_A_COEF, &
+ PPEW_B_COEF, PPET_A_COEF, PPEQ_A_COEF, PPET_B_COEF, &
+ PPEQ_B_COEF, PSNOW_THRUFAL, PGRNDFLUX, PFLSN_COR, &
+ PRESTOREN, PEVAPCOR, DEK%XLES, DEK%XLESL, ZEVAP3L, PSNOWSFCH, &
+ PDELHEATN, PDELHEATN_SFC, PRISNOW, PZENITH, PDELHEATG, &
+ PDELHEATG_SFC, PQSNOW )
+
+ ENDIF
!
! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
!* 11.0 Litter layer hydrology:
diff --git a/src/SURFEX/snow3L_isba.F90 b/src/SURFEX/snow3L_isba.F90
index 72d7868345338d97369ed25faacd830577fb2383..0f5173bed70874fc2ce4d610fbe78e93e595ab0c 100644
--- a/src/SURFEX/snow3L_isba.F90
+++ b/src/SURFEX/snow3L_isba.F90
@@ -211,12 +211,12 @@ REAL, DIMENSION(:), INTENT(OUT) :: PQS
! puis plus tard dans LALB
REAL, DIMENSION(:), INTENT(IN) :: PZENITH ! solar zenith angle
!
-REAL, DIMENSION(:,:), INTENT(INOUT) :: PBLOWSNW_FLUX
+REAL, DIMENSION(:,:),OPTIONAL, INTENT(INOUT) :: PBLOWSNW_FLUX
! PBLOWSNW_FLUX = Blowing snow particles flux:
! 1: Number (#/m2/s) 2: Mass (kg/m2/s)
! IN : contains sedimentation flux
! OUT : contains emitted turbulent flux towards the atmosphere
-REAL, DIMENSION(:,:), INTENT(IN) :: PBLOWSNW_CONC
+REAL, DIMENSION(:,:),OPTIONAL, INTENT(IN) :: PBLOWSNW_CONC
! PBLOWSNW_CONC = Blowing snow particles concentration:
! 1: Number (#/m3) 2: Mass (kg/m3)
!
@@ -330,7 +330,11 @@ DMK%XSNOWDZ(:,:) = 0.0
!
INLVLS = SIZE(PEK%TSNOW%WSNOW(:,:),2)
INLVLG = MIN(SIZE(PD_G(:,:),2),SIZE(PTG(:,:),2))
-IBLOWSNW = SIZE(PBLOWSNW_FLUX(:,:),2)
+IF (PRESENT(PBLOWSNW_FLUX)) THEN
+ IBLOWSNW = SIZE(PBLOWSNW_FLUX(:,:),2)
+ELSE
+ IBLOWSNW=0
+ENDIF
!
!
IF(.NOT.OMEB)THEN