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lmdz_lscp.F90 @ 4869

Last change on this file since 4869 was 4869, checked in by evignon, 2 months ago
identification d'un bug dans l'ajustement de la temperature lors de la fonte dans lscp Ajout d'un flag pour maintenir/enlever le probleme
File size: 61.1 KB

Rev	Line
[4664]	1	MODULE lmdz_lscp
[3999]	2
	3	IMPLICIT NONE
	4
	5	CONTAINS
	6
	7	!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[4380]	8	SUBROUTINE lscp(klon,klev,dtime,missing_val, &
[4686]	9	paprs,pplay,temp,qt,ptconv,ratqs, &
[4380]	10	d_t, d_q, d_ql, d_qi, rneb, rneblsvol, rneb_seri, &
[4530]	11	pfraclr,pfracld, &
	12	radocond, radicefrac, rain, snow, &
[3999]	13	frac_impa, frac_nucl, beta, &
	14	prfl, psfl, rhcl, zqta, fraca, &
	15	ztv, zpspsk, ztla, zthl, iflag_cld_th, &
[4380]	16	iflag_ice_thermo, ok_ice_sursat, qsatl, qsats, &
[4830]	17	distcltop,temp_cltop, &
[4380]	18	qclr, qcld, qss, qvc, rnebclr, rnebss, gamma_ss, &
[4651]	19	Tcontr, qcontr, qcontr2, fcontrN, fcontrP, &
[4803]	20	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv, &
[4830]	21	qraindiag, qsnowdiag, dqreva, dqssub, dqrauto, &
	22	dqrcol, dqrmelt, dqrfreez, dqsauto, dqsagg, dqsrim,&
[4819]	23	dqsmelt, dqsfreez)
[3999]	24
	25	!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	26	! Authors: Z.X. Li (LMD), J-L Dufresne (LMD), C. Rio (LMD), J-Y Grandpeix (LMD)
	27	! A. JAM (LMD), J-B Madeleine (LMD), E. Vignon (LMD), L. Touzze-Peiffert (LMD)
	28	!--------------------------------------------------------------------------------
	29	! Date: 01/2021
	30	!--------------------------------------------------------------------------------
	31	! Aim: Large Scale Clouds and Precipitation (LSCP)
[4226]	32	!
[3999]	33	! This code is a new version of the fisrtilp.F90 routine, which is itself a
[4072]	34	! merge of 'first' (superrsaturation physics, P. LeVan K. Laval)
[3999]	35	! and 'ilp' (il pleut, L. Li)
	36	!
[4380]	37	! Compared to the original fisrtilp code, lscp
[3999]	38	! -> assumes thermcep = .TRUE. all the time (fisrtilp inconsistent when .FALSE.)
	39	! -> consider always precipitation thermalisation (fl_cor_ebil>0)
	40	! -> option iflag_fisrtilp_qsat<0 no longer possible (qsat does not evolve with T)
	41	! -> option "oldbug" by JYG has been removed
	42	! -> iflag_t_glace >0 always
	43	! -> the 'all or nothing' cloud approach is no longer available (cpartiel=T always)
	44	! -> rectangular distribution from L. Li no longer available
	45	! -> We always account for the Wegener-Findeisen-Bergeron process (iflag_bergeron = 2 in fisrt)
	46	!--------------------------------------------------------------------------------
	47	! References:
	48	!
[4412]	49	! - Bony, S., & Emanuel, K. A. 2001, JAS, doi: 10.1175/1520-0469(2001)058<3158:APOTCA>2.0.CO;2
[3999]	50	! - Hourdin et al. 2013, Clim Dyn, doi:10.1007/s00382-012-1343-y
	51	! - Jam et al. 2013, Boundary-Layer Meteorol, doi:10.1007/s10546-012-9789-3
[4412]	52	! - Jouhaud, et al. 2018. JAMES, doi:10.1029/2018MS001379
[3999]	53	! - Madeleine et al. 2020, JAMES, doi:10.1029/2020MS002046
[4412]	54	! - Touzze-Peifert Ludo, PhD thesis, p117-124
[3999]	55	! -------------------------------------------------------------------------------
	56	! Code structure:
	57	!
[4226]	58	! P0> Thermalization of the precipitation coming from the overlying layer
[3999]	59	! P1> Evaporation of the precipitation (falling from the k+1 level)
	60	! P2> Cloud formation (at the k level)
[4412]	61	! P2.A.1> With the PDFs, calculation of cloud properties using the inital
[3999]	62	! values of T and Q
	63	! P2.A.2> Coupling between condensed water and temperature
	64	! P2.A.3> Calculation of final quantities associated with cloud formation
[4412]	65	! P2.B> Release of Latent heat after cloud formation
[3999]	66	! P3> Autoconversion to precipitation (k-level)
	67	! P4> Wet scavenging
	68	!------------------------------------------------------------------------------
	69	! Some preliminary comments (JBM) :
	70	!
	71	! The cloud water that the radiation scheme sees is not the same that the cloud
	72	! water used in the physics and the dynamics
	73	!
[4412]	74	! During the autoconversion to precipitation (P3 step), radocond (cloud water used
[3999]	75	! by the radiation scheme) is calculated as an average of the water that remains
	76	! in the cloud during the precipitation and not the water remaining at the end
	77	! of the time step. The latter is used in the rest of the physics and advected
	78	! by the dynamics.
	79	!
	80	! In summary:
	81	!
	82	! Radiation:
	83	! xflwc(newmicro)+xfiwc(newmicro) =
[4412]	84	! radocond=lwcon(nc)+iwcon(nc)
[3999]	85	!
	86	! Notetheless, be aware of:
	87	!
[4412]	88	! radocond .NE. ocond(nc)
[3999]	89	! i.e.:
	90	! lwcon(nc)+iwcon(nc) .NE. ocond(nc)
[4412]	91	! but oliq+(ocond-oliq) .EQ. ocond
[3999]	92	! (which is not trivial)
	93	!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[4226]	94	!
[4654]	95
	96	! USE de modules contenant des fonctions.
[4651]	97	USE lmdz_cloudth, ONLY : cloudth, cloudth_v3, cloudth_v6, cloudth_mpc
[4664]	98	USE lmdz_lscp_tools, ONLY : calc_qsat_ecmwf, icefrac_lscp, calc_gammasat
	99	USE lmdz_lscp_tools, ONLY : fallice_velocity, distance_to_cloud_top
[4380]	100	USE ice_sursat_mod, ONLY : ice_sursat
[4803]	101	USE lmdz_lscp_poprecip, ONLY : poprecip_evapsub, poprecip_postcld
[3999]	102
[4664]	103	! Use du module lmdz_lscp_ini contenant les constantes
[4666]	104	USE lmdz_lscp_ini, ONLY : prt_level, lunout
[4664]	105	USE lmdz_lscp_ini, ONLY : seuil_neb, niter_lscp, iflag_evap_prec, t_coup, DDT0, ztfondue, rain_int_min
	106	USE lmdz_lscp_ini, ONLY : iflag_mpc_bl, ok_radocond_snow, a_tr_sca, cld_expo_con, cld_expo_lsc
	107	USE lmdz_lscp_ini, ONLY : iflag_cloudth_vert, iflag_rain_incloud_vol, iflag_t_glace, t_glace_min
[4830]	108	USE lmdz_lscp_ini, ONLY : coef_eva, coef_sub,cld_tau_lsc, cld_tau_con, cld_lc_lsc, cld_lc_con
[4664]	109	USE lmdz_lscp_ini, ONLY : iflag_bergeron, iflag_fisrtilp_qsat, iflag_vice, cice_velo, dice_velo
	110	USE lmdz_lscp_ini, ONLY : iflag_autoconversion, ffallv_con, ffallv_lsc
	111	USE lmdz_lscp_ini, ONLY : RCPD, RLSTT, RLVTT, RLMLT, RVTMP2, RTT, RD, RG
[4869]	112	USE lmdz_lscp_ini, ONLY : ok_poprecip, ok_bug_fonte_lscp
[4380]	113
[3999]	114	IMPLICIT NONE
	115
	116	!===============================================================================
[4380]	117	! VARIABLES DECLARATION
[3999]	118	!===============================================================================
	119
	120	! INPUT VARIABLES:
	121	!-----------------
	122
[4380]	123	INTEGER, INTENT(IN) :: klon,klev ! number of horizontal grid points and vertical levels
[3999]	124	REAL, INTENT(IN) :: dtime ! time step [s]
[4380]	125	REAL, INTENT(IN) :: missing_val ! missing value for output
[4059]	126
[3999]	127	REAL, DIMENSION(klon,klev+1), INTENT(IN) :: paprs ! inter-layer pressure [Pa]
	128	REAL, DIMENSION(klon,klev), INTENT(IN) :: pplay ! mid-layer pressure [Pa]
[4654]	129	REAL, DIMENSION(klon,klev), INTENT(IN) :: temp ! temperature (K)
[4686]	130	REAL, DIMENSION(klon,klev), INTENT(IN) :: qt ! total specific humidity (in vapor phase in input) [kg/kg]
[3999]	131	INTEGER, INTENT(IN) :: iflag_cld_th ! flag that determines the distribution of convective clouds
	132	INTEGER, INTENT(IN) :: iflag_ice_thermo! flag to activate the ice thermodynamics
[4226]	133	! CR: if iflag_ice_thermo=2, only convection is active
[4072]	134	LOGICAL, INTENT(IN) :: ok_ice_sursat ! flag to determine if ice sursaturation is activated
[4059]	135
[3999]	136	LOGICAL, DIMENSION(klon,klev), INTENT(IN) :: ptconv ! grid points where deep convection scheme is active
	137
	138	!Inputs associated with thermal plumes
[4226]	139
[3999]	140	REAL, DIMENSION(klon,klev), INTENT(IN) :: ztv ! virtual potential temperature [K]
	141	REAL, DIMENSION(klon,klev), INTENT(IN) :: zqta ! specific humidity within thermals [kg/kg]
	142	REAL, DIMENSION(klon,klev), INTENT(IN) :: fraca ! fraction of thermals within the mesh [-]
	143	REAL, DIMENSION(klon,klev), INTENT(IN) :: zpspsk ! exner potential (p/100000)**(R/cp)
	144	REAL, DIMENSION(klon,klev), INTENT(IN) :: ztla ! liquid temperature within thermals [K]
	145
	146	! INPUT/OUTPUT variables
	147	!------------------------
[4562]	148
	149	REAL, DIMENSION(klon,klev), INTENT(INOUT) :: zthl ! liquid potential temperature [K]
[4686]	150	REAL, DIMENSION(klon,klev), INTENT(INOUT) :: ratqs ! function of pressure that sets the large-scale
[4059]	151
[4380]	152
[4059]	153	! Input sursaturation en glace
	154	REAL, DIMENSION(klon,klev), INTENT(INOUT):: rneb_seri ! fraction nuageuse en memoire
[3999]	155
	156	! OUTPUT variables
	157	!-----------------
	158
	159	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_t ! temperature increment [K]
	160	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_q ! specific humidity increment [kg/kg]
	161	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_ql ! liquid water increment [kg/kg]
	162	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_qi ! cloud ice mass increment [kg/kg]
	163	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rneb ! cloud fraction [-]
[4380]	164	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rneblsvol ! cloud fraction per unit volume [-]
[4530]	165	REAL, DIMENSION(klon,klev), INTENT(OUT) :: pfraclr ! precip fraction clear-sky part [-]
	166	REAL, DIMENSION(klon,klev), INTENT(OUT) :: pfracld ! precip fraction cloudy part [-]
[4412]	167	REAL, DIMENSION(klon,klev), INTENT(OUT) :: radocond ! condensed water used in the radiation scheme [kg/kg]
[3999]	168	REAL, DIMENSION(klon,klev), INTENT(OUT) :: radicefrac ! ice fraction of condensed water for radiation scheme
	169	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rhcl ! clear-sky relative humidity [-]
[4412]	170	REAL, DIMENSION(klon), INTENT(OUT) :: rain ! surface large-scale rainfall [kg/s/m2]
	171	REAL, DIMENSION(klon), INTENT(OUT) :: snow ! surface large-scale snowfall [kg/s/m2]
[4380]	172	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsatl ! saturation specific humidity wrt liquid [kg/kg]
	173	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsats ! saturation specific humidity wrt ice [kg/kg]
[3999]	174	REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: prfl ! large-scale rainfall flux in the column [kg/s/m2]
	175	REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: psfl ! large-scale snowfall flux in the column [kg/s/m2]
[4562]	176	REAL, DIMENSION(klon,klev), INTENT(OUT) :: distcltop ! distance to cloud top [m]
[4639]	177	REAL, DIMENSION(klon,klev), INTENT(OUT) :: temp_cltop ! temperature of cloud top [K]
[4686]	178	REAL, DIMENSION(klon,klev), INTENT(OUT) :: beta ! conversion rate of condensed water
	179
[3999]	180	! fraction of aerosol scavenging through impaction and nucleation (for on-line)
	181
	182	REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_impa ! scavenging fraction due tu impaction [-]
	183	REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_nucl ! scavenging fraction due tu nucleation [-]
	184
[4380]	185	! for supersaturation and contrails parameterisation
[3999]	186
[4380]	187	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qclr ! specific total water content in clear sky region [kg/kg]
	188	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcld ! specific total water content in cloudy region [kg/kg]
	189	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qss ! specific total water content in supersat region [kg/kg]
	190	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qvc ! specific vapor content in clouds [kg/kg]
	191	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rnebclr ! mesh fraction of clear sky [-]
	192	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rnebss ! mesh fraction of ISSR [-]
	193	REAL, DIMENSION(klon,klev), INTENT(OUT) :: gamma_ss ! coefficient governing the ice nucleation RHi threshold [-]
[4425]	194	REAL, DIMENSION(klon,klev), INTENT(OUT) :: Tcontr ! threshold temperature for contrail formation [K]
	195	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcontr ! threshold humidity for contrail formation [kg/kg]
	196	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcontr2 ! // (2nd expression more consistent with LMDZ expression of q)
	197	REAL, DIMENSION(klon,klev), INTENT(OUT) :: fcontrN ! fraction of grid favourable to non-persistent contrails
	198	REAL, DIMENSION(klon,klev), INTENT(OUT) :: fcontrP ! fraction of grid favourable to persistent contrails
[4686]	199	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_sth ! mean saturation deficit in thermals
	200	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_senv ! mean saturation deficit in environment
	201	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_sigmath ! std of saturation deficit in thermals
	202	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_sigmaenv ! std of saturation deficit in environment
[3999]	203
[4803]	204	! for POPRECIP
[4686]	205
[4830]	206	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qraindiag !--DIAGNOSTIC specific rain content [kg/kg]
	207	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsnowdiag !--DIAGNOSTIC specific snow content [kg/kg]
[4819]	208	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqreva !--rain tendendy due to evaporation [kg/kg/s]
	209	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqssub !--snow tendency due to sublimation [kg/kg/s]
	210	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrcol !--rain tendendy due to collection by rain of liquid cloud droplets [kg/kg/s]
	211	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsagg !--snow tendency due to collection of lcoud ice by aggregation [kg/kg/s]
	212	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrauto !--rain tendency due to autoconversion of cloud liquid [kg/kg/s]
	213	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsauto !--snow tendency due to autoconversion of cloud ice [kg/kg/s]
	214	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsrim !--snow tendency due to riming [kg/kg/s]
	215	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsmelt !--snow tendency due to melting [kg/kg/s]
	216	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrmelt !--rain tendency due to melting [kg/kg/s]
	217	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsfreez !--snow tendency due to freezing [kg/kg/s]
	218	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrfreez !--rain tendency due to freezing [kg/kg/s]
[4686]	219
[4803]	220
[3999]	221	! LOCAL VARIABLES:
	222	!----------------
	223
[4654]	224	REAL,DIMENSION(klon) :: qsl, qsi
	225	REAL :: zct, zcl,zexpo
	226	REAL, DIMENSION(klon,klev) :: ctot
	227	REAL, DIMENSION(klon,klev) :: ctot_vol
	228	REAL, DIMENSION(klon) :: zqs, zdqs
	229	REAL :: zdelta, zcor, zcvm5
	230	REAL, DIMENSION(klon) :: zdqsdT_raw
	231	REAL, DIMENSION(klon) :: gammasat,dgammasatdt ! coefficient to make cold condensation at the correct RH and derivative wrt T
	232	REAL, DIMENSION(klon) :: Tbef,qlbef,DT
	233	REAL :: num,denom
	234	REAL :: cste
	235	REAL, DIMENSION(klon) :: zpdf_sig,zpdf_k,zpdf_delta
	236	REAL, DIMENSION(klon) :: Zpdf_a,zpdf_b,zpdf_e1,zpdf_e2
	237	REAL :: erf
	238	REAL, DIMENSION(klon,klev) :: icefrac_mpc
	239	REAL, DIMENSION(klon) :: qcloud, qincloud_mpc
	240	REAL, DIMENSION(klon) :: zrfl, zrfln
	241	REAL :: zqev, zqevt
	242	REAL, DIMENSION(klon) :: zifl, zifln, ziflprev
	243	REAL :: zqev0,zqevi, zqevti
	244	REAL, DIMENSION(klon) :: zoliq, zcond, zq, zqn
	245	REAL, DIMENSION(klon) :: zoliql, zoliqi
	246	REAL, DIMENSION(klon) :: zt
	247	REAL, DIMENSION(klon,klev) :: zrho
	248	REAL, DIMENSION(klon) :: zdz,iwc
	249	REAL :: zchau,zfroi
	250	REAL, DIMENSION(klon) :: zfice,zneb,znebprecip
	251	REAL :: zmelt,zrain,zsnow,zprecip
	252	REAL, DIMENSION(klon) :: dzfice
	253	REAL :: zsolid
	254	REAL, DIMENSION(klon) :: qtot, qzero
	255	REAL, DIMENSION(klon) :: dqsl,dqsi
	256	REAL :: smallestreal
[3999]	257	! Variables for Bergeron process
[4654]	258	REAL :: zcp, coef1, DeltaT, Deltaq, Deltaqprecl
	259	REAL, DIMENSION(klon) :: zqpreci, zqprecl
[3999]	260	! Variables precipitation energy conservation
[4654]	261	REAL, DIMENSION(klon) :: zmqc
	262	REAL :: zalpha_tr
	263	REAL :: zfrac_lessi
	264	REAL, DIMENSION(klon) :: zprec_cond
[4803]	265	REAL :: zmair
[4654]	266	REAL :: zcpair, zcpeau
	267	REAL, DIMENSION(klon) :: zlh_solid
[4803]	268	REAL, DIMENSION(klon) :: ztupnew
[4654]	269	REAL :: zm_solid ! for liquid -> solid conversion
	270	REAL, DIMENSION(klon) :: zrflclr, zrflcld
	271	REAL, DIMENSION(klon) :: d_zrfl_clr_cld, d_zifl_clr_cld
	272	REAL, DIMENSION(klon) :: d_zrfl_cld_clr, d_zifl_cld_clr
	273	REAL, DIMENSION(klon) :: ziflclr, ziflcld
	274	REAL, DIMENSION(klon) :: znebprecipclr, znebprecipcld
	275	REAL, DIMENSION(klon) :: tot_zneb, tot_znebn, d_tot_zneb
	276	REAL, DIMENSION(klon) :: d_znebprecip_clr_cld, d_znebprecip_cld_clr
	277	REAL, DIMENSION(klon,klev) :: velo
	278	REAL :: vr, ffallv
	279	REAL :: qlmpc, qimpc, rnebmpc
	280	REAL, DIMENSION(klon,klev) :: radocondi, radocondl
	281	REAL :: effective_zneb
	282	REAL, DIMENSION(klon) :: distcltop1D, temp_cltop1D
[3999]	283
[4562]	284
[4654]	285	INTEGER i, k, n, kk, iter
	286	INTEGER, DIMENSION(klon) :: n_i
[4226]	287	INTEGER ncoreczq
[4654]	288	INTEGER, DIMENSION(klon,klev) :: mpc_bl_points
[4803]	289	LOGICAL iftop
[3999]	290
[4654]	291	LOGICAL, DIMENSION(klon) :: lognormale
	292	LOGICAL, DIMENSION(klon) :: keepgoing
[3999]	293
	294	CHARACTER (len = 20) :: modname = 'lscp'
	295	CHARACTER (len = 80) :: abort_message
	296
	297
	298	!===============================================================================
	299	! INITIALISATION
	300	!===============================================================================
	301
[4226]	302	! Few initial checks
[3999]	303
[4654]	304
[3999]	305	IF (iflag_fisrtilp_qsat .LT. 0) THEN
[4226]	306	abort_message = 'lscp cannot be used with iflag_fisrtilp<0'
	307	CALL abort_physic(modname,abort_message,1)
[3999]	308	ENDIF
	309
	310	! Few initialisations
	311
[4226]	312	znebprecip(:)=0.0
[3999]	313	ctot_vol(1:klon,1:klev)=0.0
	314	rneblsvol(1:klon,1:klev)=0.0
[4226]	315	smallestreal=1.e-9
	316	znebprecipclr(:)=0.0
	317	znebprecipcld(:)=0.0
[3999]	318	mpc_bl_points(:,:)=0
	319
	320	IF (prt_level>9) WRITE(lunout,*) 'NUAGES4 A. JAM'
	321
	322	! AA for 'safety' reasons
	323	zalpha_tr = 0.
	324	zfrac_lessi = 0.
[4380]	325	beta(:,:)= 0.
[3999]	326
[4380]	327	! Initialisation of variables:
	328
[3999]	329	prfl(:,:) = 0.0
	330	psfl(:,:) = 0.0
	331	d_t(:,:) = 0.0
	332	d_q(:,:) = 0.0
	333	d_ql(:,:) = 0.0
	334	d_qi(:,:) = 0.0
	335	rneb(:,:) = 0.0
[4530]	336	pfraclr(:,:)=0.0
	337	pfracld(:,:)=0.0
[4412]	338	radocond(:,:) = 0.0
[3999]	339	radicefrac(:,:) = 0.0
[4226]	340	frac_nucl(:,:) = 1.0
	341	frac_impa(:,:) = 1.0
[3999]	342	rain(:) = 0.0
	343	snow(:) = 0.0
[4114]	344	zoliq(:)=0.0
	345	zfice(:)=0.0
	346	dzfice(:)=0.0
	347	zqprecl(:)=0.0
	348	zqpreci(:)=0.0
[3999]	349	zrfl(:) = 0.0
	350	zifl(:) = 0.0
[4114]	351	ziflprev(:)=0.0
[3999]	352	zneb(:) = seuil_neb
[4226]	353	zrflclr(:) = 0.0
	354	ziflclr(:) = 0.0
	355	zrflcld(:) = 0.0
	356	ziflcld(:) = 0.0
	357	tot_zneb(:) = 0.0
	358	tot_znebn(:) = 0.0
	359	d_tot_zneb(:) = 0.0
	360	qzero(:) = 0.0
[4562]	361	distcltop1D(:)=0.0
[4639]	362	temp_cltop1D(:) = 0.0
[4803]	363	ztupnew(:)=0.0
[4380]	364	!--ice supersaturation
[4226]	365	gamma_ss(:,:) = 1.0
	366	qss(:,:) = 0.0
	367	rnebss(:,:) = 0.0
[4059]	368	Tcontr(:,:) = missing_val
	369	qcontr(:,:) = missing_val
	370	qcontr2(:,:) = missing_val
	371	fcontrN(:,:) = 0.0
	372	fcontrP(:,:) = 0.0
[4654]	373	distcltop(:,:)=0.
	374	temp_cltop(:,:)=0.
[4803]	375	!-- poprecip
[4830]	376	qraindiag(:,:)= 0.
	377	qsnowdiag(:,:)= 0.
[4819]	378	dqreva(:,:) = 0.
	379	dqrauto(:,:) = 0.
	380	dqrmelt(:,:) = 0.
	381	dqrfreez(:,:) = 0.
	382	dqrcol(:,:) = 0.
	383	dqssub(:,:) = 0.
	384	dqsauto(:,:) = 0.
	385	dqsrim(:,:) = 0.
	386	dqsagg(:,:) = 0.
	387	dqsfreez(:,:) = 0.
	388	dqsmelt(:,:) = 0.
[3999]	389
[4803]	390
	391
	392
[4392]	393	!c_iso: variable initialisation for iso
	394
	395
[3999]	396	!===============================================================================
	397	! BEGINNING OF VERTICAL LOOP FROM TOP TO BOTTOM
	398	!===============================================================================
	399
	400	ncoreczq=0
	401
	402	DO k = klev, 1, -1
	403
[4803]	404	IF (k.LE.klev-1) THEN
	405	iftop=.false.
	406	ELSE
	407	iftop=.true.
	408	ENDIF
	409
[3999]	410	! Initialisation temperature and specific humidity
	411	DO i = 1, klon
[4654]	412	zt(i)=temp(i,k)
[4686]	413	zq(i)=qt(i,k)
[4803]	414	IF (.not. iftop) THEN
	415	ztupnew(i)=temp(i,k+1)+d_t(i,k+1)
	416	ENDIF
[4392]	417	!c_iso init of iso
[3999]	418	ENDDO
[4803]	419
	420	!================================================================
	421	! Flag for the new and more microphysical treatment of precipitation from Atelier Nuage (R)
	422	IF (ok_poprecip) THEN
	423
	424	CALL poprecip_evapsub(klon, dtime, iftop, paprs(:,k), paprs(:,k+1), pplay(:,k), &
	425	zt, ztupnew, zq, zmqc, znebprecipclr, znebprecipcld, &
	426	zrfl, zrflclr, zrflcld, &
	427	zifl, ziflclr, ziflcld, &
	428	dqreva(:,k),dqssub(:,k) &
	429	)
	430
	431	!================================================================
	432	ELSE
	433
[3999]	434	! --------------------------------------------------------------------
[4803]	435	! P1> Thermalization of precipitation falling from the overlying layer
[3999]	436	! --------------------------------------------------------------------
[4412]	437	! Computes air temperature variation due to enthalpy transported by
[3999]	438	! precipitation. Precipitation is then thermalized with the air in the
	439	! layer.
	440	! The precipitation should remain thermalized throughout the different
[4412]	441	! thermodynamical transformations.
	442	! The corresponding water mass should
[3999]	443	! be added when calculating the layer's enthalpy change with
	444	! temperature
[4412]	445	! See lmdzpedia page todoan
	446	! todoan: check consistency with ice phase
	447	! todoan: understand why several steps
[3999]	448	! ---------------------------------------------------------------------
	449
[4803]	450	IF (iftop) THEN
[3999]	451
	452	DO i = 1, klon
[4803]	453	zmqc(i) = 0.
	454	ENDDO
	455
	456	ELSE
	457
	458	DO i = 1, klon
[3999]	459
[4803]	460	zmair=(paprs(i,k)-paprs(i,k+1))/RG
[3999]	461	! no condensed water so cp=cp(vapor+dry air)
	462	! RVTMP2=rcpv/rcpd-1
	463	zcpair=RCPD(1.0+RVTMP2zq(i))
[4226]	464	zcpeau=RCPD*RVTMP2
	465
[3999]	466	! zmqc: precipitation mass that has to be thermalized with
	467	! layer's air so that precipitation at the ground has the
	468	! same temperature as the lowermost layer
[4803]	469	zmqc(i) = (zrfl(i)+zifl(i))*dtime/zmair
[3999]	470	! t(i,k+1)+d_t(i,k+1): new temperature of the overlying layer
[4803]	471	zt(i) = ( ztupnew(i)zmqc(i)zcpeau + zcpair*zt(i) ) &
[3999]	472	/ (zcpair + zmqc(i)*zcpeau)
[4226]	473
[3999]	474	ENDDO
	475
	476	ENDIF
	477
	478	! --------------------------------------------------------------------
[4803]	479	! P2> Precipitation evaporation/sublimation/melting
[3999]	480	! --------------------------------------------------------------------
[4803]	481	! A part of the precipitation coming from above is evaporated/sublimated/melted.
[3999]	482	! --------------------------------------------------------------------
[4803]	483
[4397]	484	IF (iflag_evap_prec.GE.1) THEN
[3999]	485
[4072]	486	! Calculation of saturation specific humidity
	487	! depending on temperature:
[4380]	488	CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:))
[4072]	489	! wrt liquid water
[4380]	490	CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,1,.false.,qsl(:),dqsl(:))
[4072]	491	! wrt ice
[4380]	492	CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,2,.false.,qsi(:),dqsi(:))
[3999]	493
	494	DO i = 1, klon
[4226]	495
[3999]	496	! if precipitation
	497	IF (zrfl(i)+zifl(i).GT.0.) THEN
[4226]	498
[4563]	499	! LudoTP: we only account for precipitation evaporation in the clear-sky (iflag_evap_prec>=4).
[4392]	500	! c_iso: likely important to distinguish cs from neb isotope precipitation
	501
[4563]	502	IF (iflag_evap_prec.GE.4) THEN
[4226]	503	zrfl(i) = zrflclr(i)
	504	zifl(i) = ziflclr(i)
	505	ENDIF
[3999]	506
	507	IF (iflag_evap_prec.EQ.1) THEN
	508	znebprecip(i)=zneb(i)
	509	ELSE
	510	znebprecip(i)=MAX(zneb(i),znebprecip(i))
	511	ENDIF
	512
[4563]	513	IF (iflag_evap_prec.GT.4) THEN
	514	! Max evaporation not to saturate the clear sky precip fraction
	515	! i.e. the fraction where evaporation occurs
	516	zqev0 = MAX(0.0, (zqs(i)-zq(i))*znebprecipclr(i))
	517	ELSEIF (iflag_evap_prec .EQ. 4) THEN
[4226]	518	! Max evaporation not to saturate the whole mesh
[4563]	519	! Pay attention -> lead to unrealistic and excessive evaporation
[4226]	520	zqev0 = MAX(0.0, zqs(i)-zq(i))
	521	ELSE
	522	! Max evap not to saturate the fraction below the cloud
	523	zqev0 = MAX(0.0, (zqs(i)-zq(i))*znebprecip(i))
	524	ENDIF
[3999]	525
	526	! Evaporation of liquid precipitation coming from above
	527	! dP/dz=beta(1-q/qsat)sqrt(P)
	528	! formula from Sundquist 1988, Klemp & Wilhemson 1978
[4563]	529	! LTP: evaporation only in the clear sky part (iflag_evap_prec>=4)
[3999]	530
	531	IF (iflag_evap_prec.EQ.3) THEN
[4072]	532	zqevt = znebprecip(i)coef_eva(1.0-zq(i)/qsl(i)) &
[3999]	533	*SQRT(zrfl(i)/max(1.e-4,znebprecip(i))) &
	534	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
[4563]	535	ELSE IF (iflag_evap_prec.GE.4) THEN
[4072]	536	zqevt = znebprecipclr(i)coef_eva(1.0-zq(i)/qsl(i)) &
[3999]	537	*SQRT(zrfl(i)/max(1.e-8,znebprecipclr(i))) &
	538	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	539	ELSE
[4072]	540	zqevt = 1.coef_eva(1.0-zq(i)/qsl(i))*SQRT(zrfl(i)) &
[3999]	541	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	542	ENDIF
	543
[4226]	544	zqevt = MAX(0.0,MIN(zqevt,zrfl(i))) &
	545	RGdtime/(paprs(i,k)-paprs(i,k+1))
[3999]	546
	547	! sublimation of the solid precipitation coming from above
	548	IF (iflag_evap_prec.EQ.3) THEN
[4830]	549	zqevti = znebprecip(i)coef_sub(1.0-zq(i)/qsi(i)) &
[3999]	550	*SQRT(zifl(i)/max(1.e-4,znebprecip(i))) &
	551	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
[4563]	552	ELSE IF (iflag_evap_prec.GE.4) THEN
[4830]	553	zqevti = znebprecipclr(i)coef_sub(1.0-zq(i)/qsi(i)) &
[3999]	554	*SQRT(zifl(i)/max(1.e-8,znebprecipclr(i))) &
	555	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	556	ELSE
[4830]	557	zqevti = 1.coef_sub(1.0-zq(i)/qsi(i))*SQRT(zifl(i)) &
[3999]	558	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	559	ENDIF
[4226]	560
[3999]	561	zqevti = MAX(0.0,MIN(zqevti,zifl(i))) &
[4226]	562	RGdtime/(paprs(i,k)-paprs(i,k+1))
[3999]	563
	564	! A. JAM
	565	! Evaporation limit: we ensure that the layer's fraction below
	566	! the cloud or the whole mesh (depending on iflag_evap_prec)
	567	! does not reach saturation. In this case, we
	568	! redistribute zqev0 conserving the ratio liquid/ice
[4226]	569
[3999]	570	IF (zqevt+zqevti.GT.zqev0) THEN
	571	zqev=zqev0*zqevt/(zqevt+zqevti)
	572	zqevi=zqev0*zqevti/(zqevt+zqevti)
	573	ELSE
	574	zqev=zqevt
	575	zqevi=zqevti
	576	ENDIF
	577
	578
[4392]	579	! New solid and liquid precipitation fluxes after evap and sublimation
[3999]	580	zrfln(i) = Max(0.,zrfl(i) - zqev*(paprs(i,k)-paprs(i,k+1)) &
	581	/RG/dtime)
	582	zifln(i) = Max(0.,zifl(i) - zqevi*(paprs(i,k)-paprs(i,k+1)) &
	583	/RG/dtime)
	584
[4392]	585
[3999]	586	! vapor, temperature, precip fluxes update
[4803]	587	! vapor is updated after evaporation/sublimation (it is increased)
[3999]	588	zq(i) = zq(i) - (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) &
	589	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime
[4803]	590	! zmqc is the total condensed water in the precip flux (it is decreased)
[3999]	591	zmqc(i) = zmqc(i) + (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) &
	592	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime
[4803]	593	! air and precip temperature (i.e., gridbox temperature)
	594	! is updated due to latent heat cooling
[3999]	595	zt(i) = zt(i) + (zrfln(i)-zrfl(i)) &
	596	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime &
	597	* RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) &
	598	+ (zifln(i)-zifl(i)) &
	599	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime &
	600	* RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)))
	601
	602	! New values of liquid and solid precipitation
	603	zrfl(i) = zrfln(i)
	604	zifl(i) = zifln(i)
	605
[4392]	606	! c_iso here call_reevap that updates isotopic zrfl, zifl (in inout)
	607	! due to evap + sublim
	608
	609
[4563]	610	IF (iflag_evap_prec.GE.4) THEN
[4226]	611	zrflclr(i) = zrfl(i)
	612	ziflclr(i) = zifl(i)
	613	IF(zrflclr(i) + ziflclr(i).LE.0) THEN
	614	znebprecipclr(i) = 0.0
	615	ENDIF
	616	zrfl(i) = zrflclr(i) + zrflcld(i)
	617	zifl(i) = ziflclr(i) + ziflcld(i)
	618	ENDIF
[3999]	619
[4392]	620	! c_iso duplicate for isotopes or loop on isotopes
[3999]	621
[4392]	622	! Melting:
[4412]	623	zmelt = ((zt(i)-RTT)/(ztfondue-RTT)) ! JYG
[3999]	624	! precip fraction that is melted
	625	zmelt = MIN(MAX(zmelt,0.),1.)
[4392]	626
[4412]	627	! update of rainfall and snowfall due to melting
[4563]	628	IF (iflag_evap_prec.GE.4) THEN
[4226]	629	zrflclr(i)=zrflclr(i)+zmelt*ziflclr(i)
	630	zrflcld(i)=zrflcld(i)+zmelt*ziflcld(i)
	631	zrfl(i)=zrflclr(i)+zrflcld(i)
[4869]	632	IF (ok_bug_fonte_lscp) THEN
[4412]	633	ziflclr(i)=ziflclr(i)*(1.-zmelt)
	634	ziflcld(i)=ziflcld(i)*(1.-zmelt)
	635	zifl(i)=ziflclr(i)+ziflcld(i)
[4869]	636	ENDIF
[4226]	637	ELSE
	638	zrfl(i)=zrfl(i)+zmelt*zifl(i)
[4869]	639	IF (ok_bug_fonte_lscp) THEN
[4412]	640	zifl(i)=zifl(i)*(1.-zmelt)
[4869]	641	ENDIF
[4226]	642	ENDIF
[4412]	643
	644
[4392]	645	! c_iso: melting of isotopic precipi with zmelt (no fractionation)
[3999]	646
[4803]	647	! Latent heat of melting because of precipitation melting
	648	! NB: the air + precip temperature is simultaneously updated
[3999]	649	zt(i)=zt(i)-zifl(i)zmelt(RG*dtime)/(paprs(i,k)-paprs(i,k+1)) &
	650	RLMLT/RCPD/(1.0+RVTMP2(zq(i)+zmqc(i)))
[4869]	651
	652	IF (.NOT. ok_bug_fonte_lscp) THEN
	653	IF (iflag_evap_prec.GE.4) THEN
	654	ziflclr(i)=ziflclr(i)*(1.-zmelt)
	655	ziflcld(i)=ziflcld(i)*(1.-zmelt)
	656	zifl(i)=ziflclr(i)+ziflcld(i)
	657	ELSE
	658	zifl(i)=zifl(i)*(1.-zmelt)
	659	ENDIF
	660	ENDIF
[3999]	661
	662	ELSE
	663	! if no precip, we reinitialize the cloud fraction used for the precip to 0
	664	znebprecip(i)=0.
	665
	666	ENDIF ! (zrfl(i)+zifl(i).GT.0.)
	667
[4803]	668	ENDDO ! loop on klon
[4226]	669
[3999]	670	ENDIF ! (iflag_evap_prec>=1)
	671
[4803]	672	ENDIF ! (ok_poprecip)
	673
[3999]	674	! --------------------------------------------------------------------
	675	! End precip evaporation
	676	! --------------------------------------------------------------------
	677
	678	! Calculation of qsat, L/Cp*dqsat/dT and ncoreczq counter
	679	!-------------------------------------------------------
[4226]	680
[4072]	681	qtot(:)=zq(:)+zmqc(:)
[4380]	682	CALL calc_qsat_ecmwf(klon,zt(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:))
[4072]	683	DO i = 1, klon
[3999]	684	zdelta = MAX(0.,SIGN(1.,RTT-zt(i)))
[4059]	685	zdqsdT_raw(i) = zdqs(i)RCPD(1.0+RVTMP2zq(i)) / (RLVTT(1.-zdelta) + RLSTT*zdelta)
[3999]	686	IF (zq(i) .LT. 1.e-15) THEN
	687	ncoreczq=ncoreczq+1
	688	zq(i)=1.e-15
	689	ENDIF
[4392]	690	! c_iso: do something similar for isotopes
[3999]	691
[4072]	692	ENDDO
[3999]	693
	694	! --------------------------------------------------------------------
	695	! P2> Cloud formation
	696	!---------------------------------------------------------------------
	697	!
	698	! Unlike fisrtilp, we always assume a 'fractional cloud' approach
	699	! i.e. clouds occupy only a fraction of the mesh (the subgrid distribution
	700	! is prescribed and depends on large scale variables and boundary layer
	701	! properties)
	702	! The decrease in condensed part due tu latent heating is taken into
	703	! account
	704	! -------------------------------------------------------------------
	705
	706	! P2.1> With the PDFs (log-normal, bigaussian)
[4424]	707	! cloud properties calculation with the initial values of t and q
[3999]	708	! ----------------------------------------------------------------
	709
	710	! initialise gammasat and qincloud_mpc
	711	gammasat(:)=1.
	712	qincloud_mpc(:)=0.
	713
	714	IF (iflag_cld_th.GE.5) THEN
	715
	716	IF (iflag_mpc_bl .LT. 1) THEN
	717
	718	IF (iflag_cloudth_vert.LE.2) THEN
	719
	720	CALL cloudth(klon,klev,k,ztv, &
	721	zq,zqta,fraca, &
	722	qcloud,ctot,zpspsk,paprs,pplay,ztla,zthl, &
[4654]	723	ratqs,zqs,temp, &
[4651]	724	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv)
[3999]	725
[4651]	726
[3999]	727	ELSEIF (iflag_cloudth_vert.GE.3 .AND. iflag_cloudth_vert.LE.5) THEN
	728
	729	CALL cloudth_v3(klon,klev,k,ztv, &
	730	zq,zqta,fraca, &
	731	qcloud,ctot,ctot_vol,zpspsk,paprs,pplay,ztla,zthl, &
[4654]	732	ratqs,zqs,temp, &
[4651]	733	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv)
[3999]	734
[4226]	735	!Jean Jouhaud's version, Decembre 2018
	736	!-------------------------------------
[3999]	737
	738	ELSEIF (iflag_cloudth_vert.EQ.6) THEN
	739
	740	CALL cloudth_v6(klon,klev,k,ztv, &
	741	zq,zqta,fraca, &
	742	qcloud,ctot,ctot_vol,zpspsk,paprs,pplay,ztla,zthl, &
[4654]	743	ratqs,zqs,temp, &
[4651]	744	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv)
[3999]	745
	746	ENDIF
	747
	748	ELSE
	749	! cloudth_v3 + cold microphysical considerations
	750	! + stationary mixed-phase cloud model
	751
[4380]	752	CALL cloudth_mpc(klon,klev,k,iflag_mpc_bl,mpc_bl_points, &
[4654]	753	temp,ztv,zq,zqta,fraca, zpspsk, &
[3999]	754	paprs,pplay,ztla,zthl,ratqs,zqs,psfl, &
[4651]	755	qcloud,qincloud_mpc,icefrac_mpc,ctot,ctot_vol, &
	756	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv)
[3999]	757
	758	ENDIF ! iflag_mpc_bl
	759
	760	DO i=1,klon
	761	rneb(i,k)=ctot(i,k)
	762	rneblsvol(i,k)=ctot_vol(i,k)
	763	zqn(i)=qcloud(i)
	764	ENDDO
	765
	766	ENDIF
	767
	768	IF (iflag_cld_th .LE. 4) THEN
	769
	770	! lognormal
	771	lognormale = .TRUE.
	772
	773	ELSEIF (iflag_cld_th .GE. 6) THEN
	774
	775	! lognormal distribution when no thermals
	776	lognormale = fraca(:,k) < 1e-10
	777
	778	ELSE
[4226]	779	! When iflag_cld_th=5, we always assume
[3999]	780	! bi-gaussian distribution
	781	lognormale = .FALSE.
	782
	783	ENDIF
	784
	785	DT(:) = 0.
	786	n_i(:)=0
	787	Tbef(:)=zt(:)
	788	qlbef(:)=0.
	789
	790	! Treatment of non-boundary layer clouds (lognormale)
	791	! condensation with qsat(T) variation (adaptation)
[4424]	792	! Iterative resolution to converge towards qsat
	793	! with update of temperature, ice fraction and qsat at
	794	! each iteration
[4226]	795
[4424]	796	! todoan -> sensitivity to iflag_fisrtilp_qsat
[3999]	797	DO iter=1,iflag_fisrtilp_qsat+1
[4226]	798
[3999]	799	DO i=1,klon
	800
[4424]	801	! keepgoing = .true. while convergence is not satisfied
	802	keepgoing(i)=ABS(DT(i)).GT.DDT0
[4226]	803
[4424]	804	IF ((keepgoing(i) .OR. (n_i(i) .EQ. 0)) .AND. lognormale(i)) THEN
[4226]	805
[3999]	806	! if not convergence:
	807
	808	! P2.2.1> cloud fraction and condensed water mass calculation
	809	! Calculated variables:
	810	! rneb : cloud fraction
	811	! zqn : total water within the cloud
	812	! zcond: mean condensed water within the mesh
	813	! rhcl: clear-sky relative humidity
	814	!---------------------------------------------------------------
	815
[4424]	816	! new temperature that only serves in the iteration process:
[3999]	817	Tbef(i)=Tbef(i)+DT(i)
	818
	819	! Rneb, qzn and zcond for lognormal PDFs
[4072]	820	qtot(i)=zq(i)+zmqc(i)
[4226]	821
[4072]	822	ENDIF
[3999]	823
[4072]	824	ENDDO
	825
[4380]	826	! Calculation of saturation specific humidity and ice fraction
[4226]	827	CALL calc_qsat_ecmwf(klon,Tbef(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:))
	828	CALL calc_gammasat(klon,Tbef(:),qtot(:),pplay(:,k),gammasat(:),dgammasatdt(:))
[4072]	829	! saturation may occur at a humidity different from qsat (gamma qsat), so gamma correction for dqs
	830	zdqs(:) = gammasat(:)zdqs(:)+zqs(:)dgammasatdt(:)
[4562]	831	! cloud phase determination
	832	IF (iflag_t_glace.GE.4) THEN
	833	! For iflag_t_glace GE 4 the phase partition function dependends on temperature AND distance to cloud top
[4654]	834	CALL distance_to_cloud_top(klon,klev,k,temp,pplay,paprs,rneb,distcltop1D,temp_cltop1D)
[4562]	835	ENDIF
[4639]	836	CALL icefrac_lscp(klon, zt(:), iflag_ice_thermo, distcltop1D(:),temp_cltop1D(:),zfice(:),dzfice(:))
[4072]	837
[4424]	838	DO i=1,klon !todoan : check if loop in i is needed
[4072]	839
[4424]	840	IF ((keepgoing(i) .OR. (n_i(i) .EQ. 0)) .AND. lognormale(i)) THEN
[4072]	841
[3999]	842	zpdf_sig(i)=ratqs(i,k)*zq(i)
	843	zpdf_k(i)=-sqrt(log(1.+(zpdf_sig(i)/zq(i))**2))
	844	zpdf_delta(i)=log(zq(i)/(gammasat(i)*zqs(i)))
	845	zpdf_a(i)=zpdf_delta(i)/(zpdf_k(i)*sqrt(2.))
	846	zpdf_b(i)=zpdf_k(i)/(2.*sqrt(2.))
	847	zpdf_e1(i)=zpdf_a(i)-zpdf_b(i)
	848	zpdf_e1(i)=sign(min(ABS(zpdf_e1(i)),5.),zpdf_e1(i))
	849	zpdf_e1(i)=1.-erf(zpdf_e1(i))
	850	zpdf_e2(i)=zpdf_a(i)+zpdf_b(i)
	851	zpdf_e2(i)=sign(min(ABS(zpdf_e2(i)),5.),zpdf_e2(i))
	852	zpdf_e2(i)=1.-erf(zpdf_e2(i))
[4226]	853
[4062]	854	IF ((.NOT.ok_ice_sursat).OR.(Tbef(i).GT.t_glace_min)) THEN
[4059]	855
	856	IF (zpdf_e1(i).LT.1.e-10) THEN
	857	rneb(i,k)=0.
	858	zqn(i)=gammasat(i)*zqs(i)
	859	ELSE
	860	rneb(i,k)=0.5*zpdf_e1(i)
	861	zqn(i)=zq(i)*zpdf_e2(i)/zpdf_e1(i)
	862	ENDIF
	863
[4072]	864	rnebss(i,k)=0.0 !--added by OB (needed because of the convergence loop on time)
[4059]	865	fcontrN(i,k)=0.0 !--idem
	866	fcontrP(i,k)=0.0 !--idem
	867	qss(i,k)=0.0 !--idem
[4226]	868
[4424]	869	ELSE ! in case of ice supersaturation by Audran
[4226]	870
[4059]	871	!------------------------------------
[4072]	872	! ICE SUPERSATURATION
[4059]	873	!------------------------------------
[3999]	874
[4654]	875	CALL ice_sursat(pplay(i,k), paprs(i,k)-paprs(i,k+1), dtime, i, k, temp(i,k), zq(i), &
[4226]	876	gamma_ss(i,k), zqs(i), Tbef(i), rneb_seri(i,k), ratqs(i,k), &
	877	rneb(i,k), zqn(i), rnebss(i,k), qss(i,k), &
[4059]	878	Tcontr(i,k), qcontr(i,k), qcontr2(i,k), fcontrN(i,k), fcontrP(i,k) )
	879
	880	ENDIF ! ((flag_ice_sursat.eq.0).or.(Tbef(i).gt.t_glace_min))
	881
[3999]	882	! If vertical heterogeneity, change fraction by volume as well
	883	IF (iflag_cloudth_vert.GE.3) THEN
	884	ctot_vol(i,k)=rneb(i,k)
	885	rneblsvol(i,k)=ctot_vol(i,k)
	886	ENDIF
	887
	888
[4072]	889	! P2.2.2> Approximative calculation of temperature variation DT
	890	! due to condensation.
	891	! Calculated variables:
	892	! dT : temperature change due to condensation
	893	!---------------------------------------------------------------
[3999]	894
	895
	896	IF (zfice(i).LT.1) THEN
	897	cste=RLVTT
	898	ELSE
	899	cste=RLSTT
	900	ENDIF
	901
	902	qlbef(i)=max(0.,zqn(i)-zqs(i))
	903	num = -Tbef(i)+zt(i)+rneb(i,k)((1-zfice(i))RLVTT &
[4226]	904	+zfice(i)RLSTT)/RCPD/(1.0+RVTMP2(zq(i)+zmqc(i)))*qlbef(i)
[3999]	905	denom = 1.+rneb(i,k)((1-zfice(i))RLVTT+zfice(i)RLSTT)/cstezdqs(i) &
	906	-(RLSTT-RLVTT)/RCPD/(1.0+RVTMP2(zq(i)+zmqc(i)))rneb(i,k) &
[4226]	907	qlbef(i)dzfice(i)
[4424]	908	! here we update a provisory temperature variable that only serves in the iteration
	909	! process
[3999]	910	DT(i)=num/denom
	911	n_i(i)=n_i(i)+1
	912
[4424]	913	ENDIF ! end keepgoing
[3999]	914
	915	ENDDO ! end loop on i
	916
	917	ENDDO ! iter=1,iflag_fisrtilp_qsat+1
	918
	919	! P2.3> Final quantities calculation
	920	! Calculated variables:
	921	! rneb : cloud fraction
	922	! zcond: mean condensed water in the mesh
	923	! zqn : mean water vapor in the mesh
[4562]	924	! zfice: ice fraction in clouds
[3999]	925	! zt : temperature
	926	! rhcl : clear-sky relative humidity
	927	! ----------------------------------------------------------------
	928
	929
[4562]	930	! For iflag_t_glace GE 4 the phase partition function dependends on temperature AND distance to cloud top
	931	IF (iflag_t_glace.GE.4) THEN
[4654]	932	CALL distance_to_cloud_top(klon,klev,k,temp,pplay,paprs,rneb,distcltop1D,temp_cltop1D)
[4562]	933	distcltop(:,k)=distcltop1D(:)
[4639]	934	temp_cltop(:,k)=temp_cltop1D(:)
[4562]	935	ENDIF
	936
[3999]	937	! Partition function in stratiform clouds (will be overwritten in boundary-layer MPCs)
[4803]	938	CALL icefrac_lscp(klon,zt,iflag_ice_thermo,distcltop1D,temp_cltop1D,zfice, dzfice)
[3999]	939
[4562]	940
	941	! Water vapor update, Phase determination and subsequent latent heat exchange
[3999]	942	DO i=1, klon
	943
	944	IF (mpc_bl_points(i,k) .GT. 0) THEN
	945	zcond(i) = MAX(0.0,qincloud_mpc(i))*rneb(i,k)
	946	! following line is very strange and probably wrong
	947	rhcl(i,k)= (zqs(i)+zq(i))/2./zqs(i)
	948	! water vapor update and partition function if thermals
	949	zq(i) = zq(i) - zcond(i)
	950	zfice(i)=icefrac_mpc(i,k)
	951
	952	ELSE
	953
	954	! Checks on rneb, rhcl and zqn
	955	IF (rneb(i,k) .LE. 0.0) THEN
	956	zqn(i) = 0.0
	957	rneb(i,k) = 0.0
	958	zcond(i) = 0.0
	959	rhcl(i,k)=zq(i)/zqs(i)
	960	ELSE IF (rneb(i,k) .GE. 1.0) THEN
	961	zqn(i) = zq(i)
	962	rneb(i,k) = 1.0
[4818]	963	zcond(i) = MAX(0.0,zqn(i)-zqs(i))
[3999]	964	rhcl(i,k)=1.0
	965	ELSE
[4818]	966	zcond(i) = MAX(0.0,zqn(i)-zqs(i))*rneb(i,k)
[3999]	967	! following line is very strange and probably wrong:
	968	rhcl(i,k)=(zqs(i)+zq(i))/2./zqs(i)
	969	ENDIF
	970
[4226]	971	! water vapor update
	972	zq(i) = zq(i) - zcond(i)
[3999]	973
	974	ENDIF
	975
[4392]	976	! c_iso : routine that computes in-cloud supersaturation
	977	! c_iso condensation of isotopes (zcond, zsursat, zfice, zq in input)
	978
[3999]	979	! temperature update due to phase change
	980	zt(i) = zt(i) + (1.-zfice(i))*zcond(i) &
	981	& * RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) &
	982	+zfice(i)zcond(i) RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i)))
	983	ENDDO
	984
	985	! If vertical heterogeneity, change volume fraction
	986	IF (iflag_cloudth_vert .GE. 3) THEN
	987	ctot_vol(1:klon,k)=min(max(ctot_vol(1:klon,k),0.),1.)
	988	rneblsvol(1:klon,k)=ctot_vol(1:klon,k)
	989	ENDIF
	990
	991	! ----------------------------------------------------------------
[4114]	992	! P3> Precipitation formation
[3999]	993	! ----------------------------------------------------------------
[4226]	994
[4803]	995	!================================================================
	996	IF (ok_poprecip) THEN
	997
	998	DO i = 1, klon
	999	zoliql(i) = zcond(i) * ( 1. - zfice(i) )
	1000	zoliqi(i) = zcond(i) * zfice(i)
	1001	ENDDO
	1002
	1003	CALL poprecip_postcld(klon, dtime, paprs(:,k), paprs(:,k+1), pplay(:,k), &
	1004	ctot_vol(:,k), ptconv(:,k), &
	1005	zt, zq, zoliql, zoliqi, zfice, &
	1006	rneb(:,k), znebprecipclr, znebprecipcld, &
	1007	zrfl, zrflclr, zrflcld, &
	1008	zifl, ziflclr, ziflcld, &
[4830]	1009	qraindiag(:,k), qsnowdiag(:,k), dqrauto(:,k), &
[4819]	1010	dqrcol(:,k), dqrmelt(:,k), dqrfreez(:,k), &
	1011	dqsauto(:,k), dqsagg(:,k), dqsrim(:,k), &
	1012	dqsmelt(:,k), dqsfreez(:,k) &
[4803]	1013	)
	1014
	1015	DO i = 1, klon
	1016	zoliq(i) = zoliql(i) + zoliqi(i)
	1017	IF ( zoliq(i) .GT. 0. ) THEN
	1018	zfice(i) = zoliqi(i)/zoliq(i)
	1019	ELSE
	1020	zfice(i) = 0.0
	1021	ENDIF
[4819]	1022
	1023	! calculation of specific content of condensates seen by radiative scheme
	1024	IF (ok_radocond_snow) THEN
	1025	radocond(i,k) = zoliq(i)
	1026	radocondl(i,k)= radocond(i,k)*(1.-zfice(i))
[4830]	1027	radocondi(i,k)= radocond(i,k)*zfice(i)+qsnowdiag(i,k)
[4819]	1028	ELSE
	1029	radocond(i,k) = zoliq(i)
	1030	radocondl(i,k)= radocond(i,k)*(1.-zfice(i))
	1031	radocondi(i,k)= radocond(i,k)*zfice(i)
	1032	ENDIF
[4803]	1033	ENDDO
	1034
	1035	!================================================================
	1036	ELSE
	1037
[3999]	1038	! LTP:
[4563]	1039	IF (iflag_evap_prec .GE. 4) THEN
[3999]	1040
	1041	!Partitionning between precipitation coming from clouds and that coming from CS
	1042
	1043	!0) Calculate tot_zneb, total cloud fraction above the cloud
	1044	!assuming a maximum-random overlap (voir Jakob and Klein, 2000)
	1045
	1046	DO i=1, klon
[4424]	1047	tot_znebn(i) = 1. - (1.-tot_zneb(i))*(1 - max(rneb(i,k),zneb(i))) &
	1048	/(1.-min(zneb(i),1.-smallestreal))
[3999]	1049	d_tot_zneb(i) = tot_znebn(i) - tot_zneb(i)
	1050	tot_zneb(i) = tot_znebn(i)
	1051
	1052
	1053	!1) Cloudy to clear air
	1054	d_znebprecip_cld_clr(i) = znebprecipcld(i) - min(rneb(i,k),znebprecipcld(i))
[4424]	1055	IF (znebprecipcld(i) .GT. 0.) THEN
[3999]	1056	d_zrfl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*zrflcld(i)
	1057	d_zifl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*ziflcld(i)
	1058	ELSE
	1059	d_zrfl_cld_clr(i) = 0.
	1060	d_zifl_cld_clr(i) = 0.
	1061	ENDIF
	1062
	1063	!2) Clear to cloudy air
[4226]	1064	d_znebprecip_clr_cld(i) = max(0., min(znebprecipclr(i), rneb(i,k) - d_tot_zneb(i) - zneb(i)))
[3999]	1065	IF (znebprecipclr(i) .GT. 0) THEN
	1066	d_zrfl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*zrflclr(i)
	1067	d_zifl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*ziflclr(i)
	1068	ELSE
	1069	d_zrfl_clr_cld(i) = 0.
	1070	d_zifl_clr_cld(i) = 0.
	1071	ENDIF
	1072
	1073	!Update variables
[4226]	1074	znebprecipcld(i) = znebprecipcld(i) + d_znebprecip_clr_cld(i) - d_znebprecip_cld_clr(i)
[3999]	1075	znebprecipclr(i) = znebprecipclr(i) + d_znebprecip_cld_clr(i) - d_znebprecip_clr_cld(i)
	1076	zrflcld(i) = zrflcld(i) + d_zrfl_clr_cld(i) - d_zrfl_cld_clr(i)
	1077	ziflcld(i) = ziflcld(i) + d_zifl_clr_cld(i) - d_zifl_cld_clr(i)
	1078	zrflclr(i) = zrflclr(i) + d_zrfl_cld_clr(i) - d_zrfl_clr_cld(i)
	1079	ziflclr(i) = ziflclr(i) + d_zifl_cld_clr(i) - d_zifl_clr_cld(i)
	1080
[4392]	1081	! c_iso do the same thing for isotopes precip
[3999]	1082	ENDDO
	1083	ENDIF
	1084
[4559]	1085
	1086	! Autoconversion
	1087	! -------------------------------------------------------------------------------
	1088
	1089
[4412]	1090	! Initialisation of zoliq and radocond variables
[3999]	1091
	1092	DO i = 1, klon
	1093	zoliq(i) = zcond(i)
[4072]	1094	zoliqi(i)= zoliq(i)*zfice(i)
	1095	zoliql(i)= zoliq(i)*(1.-zfice(i))
[4392]	1096	! c_iso : initialisation of zoliq* also for isotopes
[4114]	1097	zrho(i,k) = pplay(i,k) / zt(i) / RD
	1098	zdz(i) = (paprs(i,k)-paprs(i,k+1)) / (zrho(i,k)*RG)
[4072]	1099	iwc(i) = 0.
	1100	zneb(i) = MAX(rneb(i,k),seuil_neb)
[4559]	1101	radocond(i,k) = zoliq(i)/REAL(niter_lscp+1)
	1102	radocondi(i,k)=zoliq(i)*zfice(i)/REAL(niter_lscp+1)
	1103	radocondl(i,k)=zoliq(i)*(1.-zfice(i))/REAL(niter_lscp+1)
[3999]	1104	ENDDO
	1105
[4559]	1106
	1107	DO n = 1, niter_lscp
[3999]	1108
	1109	DO i=1,klon
	1110	IF (rneb(i,k).GT.0.0) THEN
[4114]	1111	iwc(i) = zrho(i,k) * zoliqi(i) / zneb(i) ! in-cloud ice condensate content
[3999]	1112	ENDIF
	1113	ENDDO
	1114
[4226]	1115	CALL fallice_velocity(klon,iwc(:),zt(:),zrho(:,k),pplay(:,k),ptconv(:,k),velo(:,k))
[3999]	1116
	1117	DO i = 1, klon
	1118
	1119	IF (rneb(i,k).GT.0.0) THEN
	1120
[4072]	1121	! Initialization of zrain, zsnow and zprecip:
	1122	zrain=0.
	1123	zsnow=0.
	1124	zprecip=0.
[4392]	1125	! c_iso same init for isotopes. Externalisation?
[3999]	1126
	1127	IF (zneb(i).EQ.seuil_neb) THEN
[4072]	1128	zprecip = 0.0
	1129	zsnow = 0.0
	1130	zrain= 0.0
[3999]	1131	ELSE
[4420]	1132
[3999]	1133	IF (ptconv(i,k)) THEN ! if convective point
	1134	zcl=cld_lc_con
	1135	zct=1./cld_tau_con
[4559]	1136	zexpo=cld_expo_con
	1137	ffallv=ffallv_con
[3999]	1138	ELSE
	1139	zcl=cld_lc_lsc
	1140	zct=1./cld_tau_lsc
[4559]	1141	zexpo=cld_expo_lsc
	1142	ffallv=ffallv_lsc
[3999]	1143	ENDIF
	1144
[4559]	1145
[3999]	1146	! if vertical heterogeneity is taken into account, we use
	1147	! the "true" volume fraction instead of a modified
	1148	! surface fraction (which is larger and artificially
	1149	! reduces the in-cloud water).
[4072]	1150
[4559]	1151	! Liquid water quantity to remove: zchau (Sundqvist, 1978)
	1152	! dqliq/dt=-qliq/tau(1-exp(-qcin/clw)*2)
	1153	!.........................................................
[3999]	1154	IF ((iflag_cloudth_vert.GE.3).AND.(iflag_rain_incloud_vol.EQ.1)) THEN
	1155
[4420]	1156	! if vertical heterogeneity is taken into account, we use
	1157	! the "true" volume fraction instead of a modified
	1158	! surface fraction (which is larger and artificially
	1159	! reduces the in-cloud water).
[4559]	1160	effective_zneb=ctot_vol(i,k)
	1161	ELSE
	1162	effective_zneb=zneb(i)
	1163	ENDIF
[4420]	1164
	1165
[4559]	1166	IF (iflag_autoconversion .EQ. 2) THEN
	1167	! two-steps resolution with niter_lscp=1 sufficient
	1168	! we first treat the second term (with exponential) in an explicit way
	1169	! and then treat the first term (-q/tau) in an exact way
	1170	zchau=zoliql(i)(1.-exp(-dtime/REAL(niter_lscp)zct &
	1171	(1.-exp(-(zoliql(i)/effective_zneb/zcl)*zexpo))))
[4420]	1172	ELSE
[4559]	1173	! old explicit resolution with subtimesteps
	1174	zchau = zctdtime/REAL(niter_lscp)zoliql(i) &
	1175	(1.0-EXP(-(zoliql(i)/effective_zneb/zcl)*zexpo))
[4420]	1176	ENDIF
	1177
	1178
[4559]	1179	! Ice water quantity to remove (Zender & Kiehl, 1997)
	1180	! dqice/dt=1/rhod(rhowice*qice)/dz
	1181	!....................................
	1182	IF (iflag_autoconversion .EQ. 2) THEN
	1183	! exact resolution, niter_lscp=1 is sufficient but works only
	1184	! with iflag_vice=0
	1185	IF (zoliqi(i) .GT. 0.) THEN
	1186	zfroi=(zoliqi(i)-((zoliqi(i)**(-dice_velo)) &
	1187	+dice_velodtime/REAL(niter_lscp)cice_velo/zdz(i)ffallv)*(-1./dice_velo))
	1188	ELSE
	1189	zfroi=0.
	1190	ENDIF
	1191	ELSE
	1192	! old explicit resolution with subtimesteps
	1193	zfroi = dtime/REAL(niter_lscp)/zdz(i)zoliqi(i)velo(i,k)
	1194	ENDIF
	1195
[4397]	1196	zrain = MIN(MAX(zchau,0.0),zoliql(i))
	1197	zsnow = MIN(MAX(zfroi,0.0),zoliqi(i))
[4072]	1198	zprecip = MAX(zrain + zsnow,0.0)
[3999]	1199
	1200	ENDIF
[4226]	1201
[4559]	1202	IF (iflag_autoconversion .GE. 1) THEN
	1203	! debugged version with phase conservation through the autoconversion process
	1204	zoliql(i) = MAX(zoliql(i)-1.*zrain , 0.0)
	1205	zoliqi(i) = MAX(zoliqi(i)-1.*zsnow , 0.0)
	1206	zoliq(i) = MAX(zoliq(i)-zprecip , 0.0)
	1207	ELSE
	1208	! bugged version with phase resetting
	1209	zoliql(i) = MAX(zoliq(i)(1.-zfice(i))-1.zrain , 0.0)
	1210	zoliqi(i) = MAX(zoliq(i)zfice(i)-1.zsnow , 0.0)
	1211	zoliq(i) = MAX(zoliq(i)-zprecip , 0.0)
	1212	ENDIF
[3999]	1213
[4392]	1214	! c_iso: call isotope_conversion (for readibility) or duplicate
	1215
[4559]	1216	radocond(i,k) = radocond(i,k) + zoliq(i)/REAL(niter_lscp+1)
	1217	radocondl(i,k) = radocondl(i,k) + zoliql(i)/REAL(niter_lscp+1)
	1218	radocondi(i,k) = radocondi(i,k) + zoliqi(i)/REAL(niter_lscp+1)
[4226]	1219
[4072]	1220	ENDIF ! rneb >0
[3999]	1221
	1222	ENDDO ! i = 1,klon
	1223
	1224	ENDDO ! n = 1,niter
	1225
[4072]	1226	! Precipitation flux calculation
[3999]	1227
	1228	DO i = 1, klon
[4380]	1229
[4563]	1230	IF (iflag_evap_prec.GE.4) THEN
[4380]	1231	ziflprev(i)=ziflcld(i)
	1232	ELSE
	1233	ziflprev(i)=zifl(i)*zneb(i)
	1234	ENDIF
[3999]	1235
	1236	IF (rneb(i,k) .GT. 0.0) THEN
	1237
[4072]	1238	! CR&JYG: We account for the Wegener-Findeisen-Bergeron process in the precipitation flux:
	1239	! If T<0C, liquid precip are converted into ice, which leads to an increase in
	1240	! temperature DeltaT. The effect of DeltaT on condensates and precipitation is roughly
	1241	! taken into account through a linearization of the equations and by approximating
	1242	! the liquid precipitation process with a "threshold" process. We assume that
	1243	! condensates are not modified during this operation. Liquid precipitation is
	1244	! removed (in the limit DeltaT<273.15-T). Solid precipitation increases.
	1245	! Water vapor increases as well
	1246	! Note that compared to fisrtilp, we always assume iflag_bergeron=2
	1247
	1248	zqpreci(i)=(zcond(i)-zoliq(i))*zfice(i)
	1249	zqprecl(i)=(zcond(i)-zoliq(i))*(1.-zfice(i))
	1250	zcp=RCPD(1.0+RVTMP2(zq(i)+zmqc(i)+zcond(i)))
	1251	coef1 = rneb(i,k)RLSTT/zcpzdqsdT_raw(i)
	1252	! Computation of DT if all the liquid precip freezes
	1253	DeltaT = RLMLTzqprecl(i) / (zcp(1.+coef1))
	1254	! T should not exceed the freezing point
	1255	! that is Delta > RTT-zt(i)
	1256	DeltaT = max( min( RTT-zt(i), DeltaT) , 0. )
	1257	zt(i) = zt(i) + DeltaT
	1258	! water vaporization due to temp. increase
	1259	Deltaq = rneb(i,k)zdqsdT_raw(i)DeltaT
	1260	! we add this vaporized water to the total vapor and we remove it from the precip
	1261	zq(i) = zq(i) + Deltaq
	1262	! The three "max" lines herebelow protect from rounding errors
	1263	zcond(i) = max( zcond(i)- Deltaq, 0. )
	1264	! liquid precipitation converted to ice precip
	1265	Deltaqprecl = -zcp/RLMLT(1.+coef1)DeltaT
	1266	zqprecl(i) = max( zqprecl(i) + Deltaqprecl, 0. )
	1267	! iced water budget
	1268	zqpreci(i) = max (zqpreci(i) - Deltaqprecl - Deltaq, 0.)
[4226]	1269
[4392]	1270	! c_iso : mv here condensation of isotopes + redispatchage en precip
	1271
[4563]	1272	IF (iflag_evap_prec.GE.4) THEN
[4226]	1273	zrflcld(i) = zrflcld(i)+zqprecl(i) &
	1274	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
	1275	ziflcld(i) = ziflcld(i)+ zqpreci(i) &
	1276	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
	1277	znebprecipcld(i) = rneb(i,k)
	1278	zrfl(i) = zrflcld(i) + zrflclr(i)
	1279	zifl(i) = ziflcld(i) + ziflclr(i)
	1280	ELSE
[3999]	1281	zrfl(i) = zrfl(i)+ zqprecl(i) &
	1282	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
	1283	zifl(i) = zifl(i)+ zqpreci(i) &
[4226]	1284	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
[3999]	1285	ENDIF
[4392]	1286	! c_iso : same for isotopes
[3999]	1287
	1288	ENDIF ! rneb>0
	1289
	1290	ENDDO
	1291
[4226]	1292	! LTP: limit of surface cloud fraction covered by precipitation when the local intensity of the flux is below rain_int_min
[4563]	1293	! if iflag_evap_prec>=4
	1294	IF (iflag_evap_prec.GE.4) THEN
[4114]	1295
[4226]	1296	DO i=1,klon
[4114]	1297
[4226]	1298	IF ((zrflclr(i) + ziflclr(i)) .GT. 0. ) THEN
[3999]	1299	znebprecipclr(i) = min(znebprecipclr(i),max(zrflclr(i)/ &
	1300	(MAX(znebprecipclr(i),seuil_neb)rain_int_min), ziflclr(i)/(MAX(znebprecipclr(i),seuil_neb)rain_int_min)))
	1301	ELSE
[4226]	1302	znebprecipclr(i)=0.0
	1303	ENDIF
	1304
	1305	IF ((zrflcld(i) + ziflcld(i)) .GT. 0.) THEN
[3999]	1306	znebprecipcld(i) = min(znebprecipcld(i), max(zrflcld(i)/ &
	1307	(MAX(znebprecipcld(i),seuil_neb)rain_int_min), ziflcld(i)/(MAX(znebprecipcld(i),seuil_neb)rain_int_min)))
[4226]	1308	ELSE
	1309	znebprecipcld(i)=0.0
	1310	ENDIF
[3999]	1311
[4226]	1312	ENDDO
[3999]	1313
[4226]	1314	ENDIF
[3999]	1315
[4803]	1316	ENDIF ! ok_poprecip
	1317
[3999]	1318	! End of precipitation formation
	1319	! --------------------------------
	1320
	1321
[4803]	1322	! Calculation of cloud condensates amount seen by radiative scheme
	1323	!-----------------------------------------------------------------
	1324
[4114]	1325	! Calculation of the concentration of condensates seen by the radiation scheme
[4412]	1326	! for liquid phase, we take radocondl
	1327	! for ice phase, we take radocondi if we neglect snowfall, otherwise (ok_radocond_snow=true)
[4803]	1328	! we recalculate radocondi to account for contributions from the precipitation flux
	1329	! TODO: for the moment, we deactivate this option when ok_poprecip=.true.
[3999]	1330
[4803]	1331	IF ((ok_radocond_snow) .AND. (k .LT. klev) .AND. (.NOT. ok_poprecip)) THEN
[4114]	1332	! for the solid phase (crystals + snowflakes)
[4412]	1333	! we recalculate radocondi by summing
[4114]	1334	! the ice content calculated in the mesh
	1335	! + the contribution of the non-evaporated snowfall
	1336	! from the overlying layer
	1337	DO i=1,klon
	1338	IF (ziflprev(i) .NE. 0.0) THEN
[4412]	1339	radocondi(i,k)=zoliq(i)*zfice(i)+zqpreci(i)+ziflprev(i)/zrho(i,k+1)/velo(i,k+1)
[4114]	1340	ELSE
[4412]	1341	radocondi(i,k)=zoliq(i)*zfice(i)+zqpreci(i)
[4114]	1342	ENDIF
[4412]	1343	radocond(i,k)=radocondl(i,k)+radocondi(i,k)
[4114]	1344	ENDDO
	1345	ENDIF
	1346
[4412]	1347	! caculate the percentage of ice in "radocond" so cloud+precip seen by the radiation scheme
[4114]	1348	DO i=1,klon
[4412]	1349	IF (radocond(i,k) .GT. 0.) THEN
	1350	radicefrac(i,k)=MIN(MAX(radocondi(i,k)/radocond(i,k),0.),1.)
[4114]	1351	ENDIF
	1352	ENDDO
	1353
[3999]	1354	! ----------------------------------------------------------------
	1355	! P4> Wet scavenging
	1356	! ----------------------------------------------------------------
	1357
	1358	!Scavenging through nucleation in the layer
	1359
	1360	DO i = 1,klon
	1361
	1362	IF(zcond(i).GT.zoliq(i)+1.e-10) THEN
	1363	beta(i,k) = (zcond(i)-zoliq(i))/zcond(i)/dtime
	1364	ELSE
	1365	beta(i,k) = 0.
	1366	ENDIF
	1367
[4059]	1368	zprec_cond(i) = MAX(zcond(i)-zoliq(i),0.0)*(paprs(i,k)-paprs(i,k+1))/RG
[3999]	1369
	1370	IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN
	1371
[4654]	1372	IF (temp(i,k) .GE. t_glace_min) THEN
[3999]	1373	zalpha_tr = a_tr_sca(3)
	1374	ELSE
	1375	zalpha_tr = a_tr_sca(4)
	1376	ENDIF
	1377
	1378	zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i))
	1379	frac_nucl(i,k)= 1.-zneb(i)*zfrac_lessi
[4226]	1380
[3999]	1381	! Nucleation with a factor of -1 instead of -0.5
	1382	zfrac_lessi = 1. - EXP(-zprec_cond(i)/zneb(i))
	1383
	1384	ENDIF
	1385
[4226]	1386	ENDDO
	1387
[3999]	1388	! Scavenging through impaction in the underlying layer
	1389
	1390	DO kk = k-1, 1, -1
	1391
	1392	DO i = 1, klon
	1393
	1394	IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN
	1395
[4654]	1396	IF (temp(i,kk) .GE. t_glace_min) THEN
[3999]	1397	zalpha_tr = a_tr_sca(1)
	1398	ELSE
	1399	zalpha_tr = a_tr_sca(2)
	1400	ENDIF
	1401
	1402	zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i))
	1403	frac_impa(i,kk)= 1.-zneb(i)*zfrac_lessi
	1404
	1405	ENDIF
	1406
	1407	ENDDO
	1408
	1409	ENDDO
[4226]	1410
[4072]	1411	!--save some variables for ice supersaturation
[4059]	1412	!
	1413	DO i = 1, klon
[4072]	1414	! for memory
[4059]	1415	rneb_seri(i,k) = rneb(i,k)
[3999]	1416
[4072]	1417	! for diagnostics
[4059]	1418	rnebclr(i,k) = 1.0 - rneb(i,k) - rnebss(i,k)
[3999]	1419
[4059]	1420	qvc(i,k) = zqs(i) * rneb(i,k)
[4072]	1421	qclr(i,k) = MAX(1.e-10,zq(i) - qvc(i,k) - qss(i,k)) !--added by OB because of pathologic cases with the lognormal
[4059]	1422	qcld(i,k) = qvc(i,k) + zcond(i)
[4226]	1423	ENDDO
[4072]	1424	!q_sat
[4380]	1425	CALL calc_qsat_ecmwf(klon,Tbef(:),qzero(:),pplay(:,k),RTT,1,.false.,qsatl(:,k),zdqs(:))
	1426	CALL calc_qsat_ecmwf(klon,Tbef(:),qzero(:),pplay(:,k),RTT,2,.false.,qsats(:,k),zdqs(:))
[4059]	1427
[4803]	1428
	1429
	1430	! Outputs:
	1431	!-------------------------------
	1432	! Precipitation fluxes at layer interfaces
	1433	! + precipitation fractions +
	1434	! temperature and water species tendencies
	1435	DO i = 1, klon
	1436	psfl(i,k)=zifl(i)
	1437	prfl(i,k)=zrfl(i)
	1438	pfraclr(i,k)=znebprecipclr(i)
	1439	pfracld(i,k)=znebprecipcld(i)
	1440	d_ql(i,k) = (1-zfice(i))*zoliq(i)
	1441	d_qi(i,k) = zfice(i)*zoliq(i)
	1442	d_q(i,k) = zq(i) - qt(i,k)
	1443	! c_iso: same for isotopes
	1444	d_t(i,k) = zt(i) - temp(i,k)
	1445	ENDDO
	1446
	1447
[4226]	1448	ENDDO
[4059]	1449
[3999]	1450
	1451	! Rain or snow at the surface (depending on the first layer temperature)
	1452	DO i = 1, klon
	1453	snow(i) = zifl(i)
	1454	rain(i) = zrfl(i)
[4392]	1455	! c_iso final output
[3999]	1456	ENDDO
	1457
	1458	IF (ncoreczq>0) THEN
	1459	WRITE(lunout,*)'WARNING : ZQ in LSCP ',ncoreczq,' val < 1.e-15.'
	1460	ENDIF
	1461
[4654]	1462
	1463	RETURN
	1464
[4380]	1465	END SUBROUTINE lscp
[3999]	1466	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	1467
[4664]	1468	END MODULE lmdz_lscp

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