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lmdz_lscp.f90 @ 5354

Last change on this file since 5354 was 5268, checked in by abarral, 7 weeks ago
.f90 <-> .F90 depending on cpp key use
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[4664]	1	MODULE lmdz_lscp
[3999]	2
	3	IMPLICIT NONE
	4
	5	CONTAINS
	6
	7	!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[4380]	8	SUBROUTINE lscp(klon,klev,dtime,missing_val, &
[5208]	9	paprs,pplay,temp,qt,qice_save,ptconv,ratqs,sigma_qtherm, &
[5204]	10	d_t, d_q, d_ql, d_qi, rneb, rneblsvol, &
[5007]	11	pfraclr, pfracld, &
	12	cldfraliq, sigma2_icefracturb,mean_icefracturb, &
[4530]	13	radocond, radicefrac, rain, snow, &
[3999]	14	frac_impa, frac_nucl, beta, &
[5007]	15	prfl, psfl, rhcl, qta, fraca, &
	16	tv, pspsk, tla, thl, iflag_cld_th, &
[5204]	17	iflag_ice_thermo, distcltop, temp_cltop, &
	18	tke, tke_dissip, &
	19	cell_area, &
	20	cf_seri, rvc_seri, u_seri, v_seri, &
	21	qsub, qissr, qcld, subfra, issrfra, gamma_cond, &
	22	ratio_qi_qtot, dcf_sub, dcf_con, dcf_mix, &
	23	dqi_adj, dqi_sub, dqi_con, dqi_mix, dqvc_adj, &
	24	dqvc_sub, dqvc_con, dqvc_mix, qsatl, qsati, &
	25	Tcontr, qcontr, qcontr2, fcontrN, fcontrP, dcf_avi,&
	26	dqi_avi, dqvc_avi, flight_dist, flight_h2o, &
[4803]	27	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv, &
[4830]	28	qraindiag, qsnowdiag, dqreva, dqssub, dqrauto, &
	29	dqrcol, dqrmelt, dqrfreez, dqsauto, dqsagg, dqsrim,&
[4819]	30	dqsmelt, dqsfreez)
[3999]	31
	32	!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	33	! Authors: Z.X. Li (LMD), J-L Dufresne (LMD), C. Rio (LMD), J-Y Grandpeix (LMD)
	34	! A. JAM (LMD), J-B Madeleine (LMD), E. Vignon (LMD), L. Touzze-Peiffert (LMD)
	35	!--------------------------------------------------------------------------------
	36	! Date: 01/2021
	37	!--------------------------------------------------------------------------------
	38	! Aim: Large Scale Clouds and Precipitation (LSCP)
[4226]	39	!
[3999]	40	! This code is a new version of the fisrtilp.F90 routine, which is itself a
[4072]	41	! merge of 'first' (superrsaturation physics, P. LeVan K. Laval)
[3999]	42	! and 'ilp' (il pleut, L. Li)
	43	!
[4380]	44	! Compared to the original fisrtilp code, lscp
[3999]	45	! -> assumes thermcep = .TRUE. all the time (fisrtilp inconsistent when .FALSE.)
	46	! -> consider always precipitation thermalisation (fl_cor_ebil>0)
	47	! -> option iflag_fisrtilp_qsat<0 no longer possible (qsat does not evolve with T)
	48	! -> option "oldbug" by JYG has been removed
	49	! -> iflag_t_glace >0 always
	50	! -> the 'all or nothing' cloud approach is no longer available (cpartiel=T always)
	51	! -> rectangular distribution from L. Li no longer available
	52	! -> We always account for the Wegener-Findeisen-Bergeron process (iflag_bergeron = 2 in fisrt)
	53	!--------------------------------------------------------------------------------
	54	! References:
	55	!
[4412]	56	! - Bony, S., & Emanuel, K. A. 2001, JAS, doi: 10.1175/1520-0469(2001)058<3158:APOTCA>2.0.CO;2
[3999]	57	! - Hourdin et al. 2013, Clim Dyn, doi:10.1007/s00382-012-1343-y
	58	! - Jam et al. 2013, Boundary-Layer Meteorol, doi:10.1007/s10546-012-9789-3
[4412]	59	! - Jouhaud, et al. 2018. JAMES, doi:10.1029/2018MS001379
[3999]	60	! - Madeleine et al. 2020, JAMES, doi:10.1029/2020MS002046
[4412]	61	! - Touzze-Peifert Ludo, PhD thesis, p117-124
[3999]	62	! -------------------------------------------------------------------------------
	63	! Code structure:
	64	!
[4226]	65	! P0> Thermalization of the precipitation coming from the overlying layer
[3999]	66	! P1> Evaporation of the precipitation (falling from the k+1 level)
	67	! P2> Cloud formation (at the k level)
[4412]	68	! P2.A.1> With the PDFs, calculation of cloud properties using the inital
[3999]	69	! values of T and Q
	70	! P2.A.2> Coupling between condensed water and temperature
	71	! P2.A.3> Calculation of final quantities associated with cloud formation
[4412]	72	! P2.B> Release of Latent heat after cloud formation
[3999]	73	! P3> Autoconversion to precipitation (k-level)
	74	! P4> Wet scavenging
	75	!------------------------------------------------------------------------------
	76	! Some preliminary comments (JBM) :
	77	!
	78	! The cloud water that the radiation scheme sees is not the same that the cloud
	79	! water used in the physics and the dynamics
	80	!
[4412]	81	! During the autoconversion to precipitation (P3 step), radocond (cloud water used
[3999]	82	! by the radiation scheme) is calculated as an average of the water that remains
	83	! in the cloud during the precipitation and not the water remaining at the end
	84	! of the time step. The latter is used in the rest of the physics and advected
	85	! by the dynamics.
	86	!
	87	! In summary:
	88	!
	89	! Radiation:
	90	! xflwc(newmicro)+xfiwc(newmicro) =
[4412]	91	! radocond=lwcon(nc)+iwcon(nc)
[3999]	92	!
	93	! Notetheless, be aware of:
	94	!
[4412]	95	! radocond .NE. ocond(nc)
[3999]	96	! i.e.:
	97	! lwcon(nc)+iwcon(nc) .NE. ocond(nc)
[4412]	98	! but oliq+(ocond-oliq) .EQ. ocond
[3999]	99	! (which is not trivial)
	100	!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[4226]	101	!
[4654]	102
	103	! USE de modules contenant des fonctions.
[4651]	104	USE lmdz_cloudth, ONLY : cloudth, cloudth_v3, cloudth_v6, cloudth_mpc
[5007]	105	USE lmdz_lscp_tools, ONLY : calc_qsat_ecmwf, calc_gammasat
	106	USE lmdz_lscp_tools, ONLY : icefrac_lscp, icefrac_lscp_turb
[4664]	107	USE lmdz_lscp_tools, ONLY : fallice_velocity, distance_to_cloud_top
[5241]	108	!USE lmdz_lscp_condensation, ONLY : condensation_lognormal_test, condensation_ice_supersat
	109	USE lmdz_lscp_condensation, ONLY : condensation_lognormal, condensation_ice_supersat
[4879]	110	USE lmdz_lscp_poprecip, ONLY : poprecip_precld, poprecip_postcld
[3999]	111
[4664]	112	! Use du module lmdz_lscp_ini contenant les constantes
[5204]	113	USE lmdz_lscp_ini, ONLY : prt_level, lunout, eps
[4664]	114	USE lmdz_lscp_ini, ONLY : seuil_neb, niter_lscp, iflag_evap_prec, t_coup, DDT0, ztfondue, rain_int_min
[4910]	115	USE lmdz_lscp_ini, ONLY : ok_radocond_snow, a_tr_sca, cld_expo_con, cld_expo_lsc
[4664]	116	USE lmdz_lscp_ini, ONLY : iflag_cloudth_vert, iflag_rain_incloud_vol, iflag_t_glace, t_glace_min
[4830]	117	USE lmdz_lscp_ini, ONLY : coef_eva, coef_sub,cld_tau_lsc, cld_tau_con, cld_lc_lsc, cld_lc_con
[4664]	118	USE lmdz_lscp_ini, ONLY : iflag_bergeron, iflag_fisrtilp_qsat, iflag_vice, cice_velo, dice_velo
[4910]	119	USE lmdz_lscp_ini, ONLY : iflag_autoconversion, ffallv_con, ffallv_lsc, min_frac_th_cld
[4664]	120	USE lmdz_lscp_ini, ONLY : RCPD, RLSTT, RLVTT, RLMLT, RVTMP2, RTT, RD, RG
[4915]	121	USE lmdz_lscp_ini, ONLY : ok_poprecip
[5211]	122	USE lmdz_lscp_ini, ONLY : ok_ice_supersat, ok_unadjusted_clouds, iflag_icefrac
[5204]	123
[3999]	124	IMPLICIT NONE
	125
	126	!===============================================================================
[4380]	127	! VARIABLES DECLARATION
[3999]	128	!===============================================================================
	129
	130	! INPUT VARIABLES:
	131	!-----------------
	132
[4380]	133	INTEGER, INTENT(IN) :: klon,klev ! number of horizontal grid points and vertical levels
[3999]	134	REAL, INTENT(IN) :: dtime ! time step [s]
[4380]	135	REAL, INTENT(IN) :: missing_val ! missing value for output
[4059]	136
[3999]	137	REAL, DIMENSION(klon,klev+1), INTENT(IN) :: paprs ! inter-layer pressure [Pa]
	138	REAL, DIMENSION(klon,klev), INTENT(IN) :: pplay ! mid-layer pressure [Pa]
[4654]	139	REAL, DIMENSION(klon,klev), INTENT(IN) :: temp ! temperature (K)
[4686]	140	REAL, DIMENSION(klon,klev), INTENT(IN) :: qt ! total specific humidity (in vapor phase in input) [kg/kg]
[5007]	141	REAL, DIMENSION(klon,klev), INTENT(IN) :: qice_save ! ice specific from previous time step [kg/kg]
[3999]	142	INTEGER, INTENT(IN) :: iflag_cld_th ! flag that determines the distribution of convective clouds
	143	INTEGER, INTENT(IN) :: iflag_ice_thermo! flag to activate the ice thermodynamics
[4226]	144	! CR: if iflag_ice_thermo=2, only convection is active
[3999]	145	LOGICAL, DIMENSION(klon,klev), INTENT(IN) :: ptconv ! grid points where deep convection scheme is active
	146
	147	!Inputs associated with thermal plumes
[4226]	148
[5007]	149	REAL, DIMENSION(klon,klev), INTENT(IN) :: tv ! virtual potential temperature [K]
	150	REAL, DIMENSION(klon,klev), INTENT(IN) :: qta ! specific humidity within thermals [kg/kg]
	151	REAL, DIMENSION(klon,klev), INTENT(IN) :: fraca ! fraction of thermals within the mesh [-]
	152	REAL, DIMENSION(klon,klev), INTENT(IN) :: pspsk ! exner potential (p/100000)**(R/cp)
	153	REAL, DIMENSION(klon,klev), INTENT(IN) :: tla ! liquid temperature within thermals [K]
[5204]	154	REAL, DIMENSION(klon,klev+1), INTENT(IN) :: tke !--turbulent kinetic energy [m2/s2]
	155	REAL, DIMENSION(klon,klev+1), INTENT(IN) :: tke_dissip !--TKE dissipation [m2/s3]
[3999]	156
	157	! INPUT/OUTPUT variables
	158	!------------------------
[4562]	159
[5208]	160	REAL, DIMENSION(klon,klev), INTENT(INOUT) :: thl ! liquid potential temperature [K]
	161	REAL, DIMENSION(klon,klev), INTENT(INOUT) :: ratqs,sigma_qtherm ! function of pressure that sets the large-scale
[4059]	162
[5208]	163
[5204]	164	! INPUT/OUTPUT condensation and ice supersaturation
	165	!--------------------------------------------------
	166	REAL, DIMENSION(klon,klev), INTENT(INOUT):: cf_seri ! cloud fraction [-]
	167	REAL, DIMENSION(klon,klev), INTENT(INOUT):: ratio_qi_qtot ! solid specific water to total specific water ratio [-]
	168	REAL, DIMENSION(klon,klev), INTENT(INOUT):: rvc_seri ! cloudy water vapor to total water vapor ratio [-]
	169	REAL, DIMENSION(klon,klev), INTENT(IN) :: u_seri ! eastward wind [m/s]
	170	REAL, DIMENSION(klon,klev), INTENT(IN) :: v_seri ! northward wind [m/s]
	171	REAL, DIMENSION(klon), INTENT(IN) :: cell_area ! area of each cell [m2]
[4380]	172
[5204]	173	! INPUT/OUTPUT aviation
	174	!--------------------------------------------------
	175	REAL, DIMENSION(klon,klev), INTENT(IN) :: flight_dist ! Aviation distance flown within the mesh [m/s/mesh]
	176	REAL, DIMENSION(klon,klev), INTENT(IN) :: flight_h2o ! Aviation H2O emitted within the mesh [kg H2O/s/mesh]
[3999]	177
	178	! OUTPUT variables
	179	!-----------------
	180
[5204]	181	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_t ! temperature increment [K]
	182	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_q ! specific humidity increment [kg/kg]
	183	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_ql ! liquid water increment [kg/kg]
	184	REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_qi ! cloud ice mass increment [kg/kg]
	185	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rneb ! cloud fraction [-]
	186	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rneblsvol ! cloud fraction per unit volume [-]
	187	REAL, DIMENSION(klon,klev), INTENT(OUT) :: pfraclr ! precip fraction clear-sky part [-]
	188	REAL, DIMENSION(klon,klev), INTENT(OUT) :: pfracld ! precip fraction cloudy part [-]
[5007]	189	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cldfraliq ! liquid fraction of cloud [-]
	190	REAL, DIMENSION(klon,klev), INTENT(OUT) :: sigma2_icefracturb ! Variance of the diagnostic supersaturation distribution (icefrac_turb) [-]
	191	REAL, DIMENSION(klon,klev), INTENT(OUT) :: mean_icefracturb ! Mean of the diagnostic supersaturation distribution (icefrac_turb) [-]
[5204]	192	REAL, DIMENSION(klon,klev), INTENT(OUT) :: radocond ! condensed water used in the radiation scheme [kg/kg]
	193	REAL, DIMENSION(klon,klev), INTENT(OUT) :: radicefrac ! ice fraction of condensed water for radiation scheme
	194	REAL, DIMENSION(klon,klev), INTENT(OUT) :: rhcl ! clear-sky relative humidity [-]
	195	REAL, DIMENSION(klon), INTENT(OUT) :: rain ! surface large-scale rainfall [kg/s/m2]
	196	REAL, DIMENSION(klon), INTENT(OUT) :: snow ! surface large-scale snowfall [kg/s/m2]
	197	REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: prfl ! large-scale rainfall flux in the column [kg/s/m2]
	198	REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: psfl ! large-scale snowfall flux in the column [kg/s/m2]
	199	REAL, DIMENSION(klon,klev), INTENT(OUT) :: distcltop ! distance to cloud top [m]
	200	REAL, DIMENSION(klon,klev), INTENT(OUT) :: temp_cltop ! temperature of cloud top [K]
	201	REAL, DIMENSION(klon,klev), INTENT(OUT) :: beta ! conversion rate of condensed water
[4686]	202
[5007]	203	! fraction of aerosol scavenging through impaction and nucleation (for on-line)
[3999]	204
[5007]	205	REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_impa ! scavenging fraction due tu impaction [-]
	206	REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_nucl ! scavenging fraction due tu nucleation [-]
[3999]	207
[5204]	208	! for condensation and ice supersaturation
[3999]	209
[5204]	210	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsub !--specific total water content in sub-saturated clear sky region [kg/kg]
	211	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qissr !--specific total water content in supersat region [kg/kg]
	212	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcld !--specific total water content in cloudy region [kg/kg]
	213	REAL, DIMENSION(klon,klev), INTENT(OUT) :: subfra !--mesh fraction of subsaturated clear sky [-]
	214	REAL, DIMENSION(klon,klev), INTENT(OUT) :: issrfra !--mesh fraction of ISSR [-]
	215	REAL, DIMENSION(klon,klev), INTENT(OUT) :: gamma_cond !--coefficient governing the ice nucleation RHi threshold [-]
	216	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dcf_sub !--cloud fraction tendency because of sublimation [s-1]
	217	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dcf_con !--cloud fraction tendency because of condensation [s-1]
	218	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dcf_mix !--cloud fraction tendency because of cloud mixing [s-1]
	219	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqi_adj !--specific ice content tendency because of temperature adjustment [kg/kg/s]
	220	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqi_sub !--specific ice content tendency because of sublimation [kg/kg/s]
	221	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqi_con !--specific ice content tendency because of condensation [kg/kg/s]
	222	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqi_mix !--specific ice content tendency because of cloud mixing [kg/kg/s]
	223	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqvc_adj !--specific cloud water vapor tendency because of temperature adjustment [kg/kg/s]
	224	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqvc_sub !--specific cloud water vapor tendency because of sublimation [kg/kg/s]
	225	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqvc_con !--specific cloud water vapor tendency because of condensation [kg/kg/s]
	226	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqvc_mix !--specific cloud water vapor tendency because of cloud mixing [kg/kg/s]
	227	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsatl !--saturation specific humidity wrt liquid [kg/kg]
	228	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsati !--saturation specific humidity wrt ice [kg/kg]
	229
	230	! for contrails and aviation
	231
	232	REAL, DIMENSION(klon,klev), INTENT(OUT) :: Tcontr !--threshold temperature for contrail formation [K]
	233	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcontr !--threshold humidity for contrail formation [kg/kg]
	234	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcontr2 !--// (2nd expression more consistent with LMDZ expression of q)
	235	REAL, DIMENSION(klon,klev), INTENT(OUT) :: fcontrN !--fraction of grid favourable to non-persistent contrails
	236	REAL, DIMENSION(klon,klev), INTENT(OUT) :: fcontrP !--fraction of grid favourable to persistent contrails
	237	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dcf_avi !--cloud fraction tendency because of aviation [s-1]
	238	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqi_avi !--specific ice content tendency because of aviation [kg/kg/s]
	239	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqvc_avi !--specific cloud water vapor tendency because of aviation [kg/kg/s]
	240
	241
[4803]	242	! for POPRECIP
[4686]	243
[4830]	244	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qraindiag !--DIAGNOSTIC specific rain content [kg/kg]
	245	REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsnowdiag !--DIAGNOSTIC specific snow content [kg/kg]
[4819]	246	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqreva !--rain tendendy due to evaporation [kg/kg/s]
	247	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqssub !--snow tendency due to sublimation [kg/kg/s]
	248	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrcol !--rain tendendy due to collection by rain of liquid cloud droplets [kg/kg/s]
	249	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsagg !--snow tendency due to collection of lcoud ice by aggregation [kg/kg/s]
	250	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrauto !--rain tendency due to autoconversion of cloud liquid [kg/kg/s]
	251	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsauto !--snow tendency due to autoconversion of cloud ice [kg/kg/s]
	252	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsrim !--snow tendency due to riming [kg/kg/s]
	253	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsmelt !--snow tendency due to melting [kg/kg/s]
	254	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrmelt !--rain tendency due to melting [kg/kg/s]
	255	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqsfreez !--snow tendency due to freezing [kg/kg/s]
	256	REAL, DIMENSION(klon,klev), INTENT(OUT) :: dqrfreez !--rain tendency due to freezing [kg/kg/s]
[4686]	257
[5204]	258	! for thermals
[4803]	259
[5204]	260	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_sth !--mean saturation deficit in thermals
	261	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_senv !--mean saturation deficit in environment
	262	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_sigmath !--std of saturation deficit in thermals
	263	REAL, DIMENSION(klon,klev), INTENT(OUT) :: cloudth_sigmaenv !--std of saturation deficit in environment
	264
	265
[3999]	266	! LOCAL VARIABLES:
	267	!----------------
[5007]	268	REAL,DIMENSION(klon) :: qsl, qsi ! saturation threshold at current vertical level
[4654]	269	REAL :: zct, zcl,zexpo
	270	REAL, DIMENSION(klon,klev) :: ctot
	271	REAL, DIMENSION(klon,klev) :: ctot_vol
	272	REAL, DIMENSION(klon) :: zqs, zdqs
	273	REAL :: zdelta, zcor, zcvm5
	274	REAL, DIMENSION(klon) :: zdqsdT_raw
[5007]	275	REAL, DIMENSION(klon) :: gammasat,dgammasatdt ! coefficient to make cold condensation at the correct RH and derivative wrt T
	276	REAL, DIMENSION(klon) :: Tbef,qlbef,DT ! temperature, humidity and temp. variation during lognormal iteration
[4654]	277	REAL :: num,denom
	278	REAL :: cste
[5007]	279	REAL, DIMENSION(klon) :: zpdf_sig,zpdf_k,zpdf_delta ! lognormal parameters
	280	REAL, DIMENSION(klon) :: Zpdf_a,zpdf_b,zpdf_e1,zpdf_e2 ! lognormal intermediate variables
[4654]	281	REAL :: erf
[4910]	282	REAL, DIMENSION(klon) :: zfice_th
[4654]	283	REAL, DIMENSION(klon) :: qcloud, qincloud_mpc
	284	REAL, DIMENSION(klon) :: zrfl, zrfln
	285	REAL :: zqev, zqevt
	286	REAL, DIMENSION(klon) :: zifl, zifln, ziflprev
	287	REAL :: zqev0,zqevi, zqevti
	288	REAL, DIMENSION(klon) :: zoliq, zcond, zq, zqn
	289	REAL, DIMENSION(klon) :: zoliql, zoliqi
	290	REAL, DIMENSION(klon) :: zt
	291	REAL, DIMENSION(klon,klev) :: zrho
	292	REAL, DIMENSION(klon) :: zdz,iwc
	293	REAL :: zchau,zfroi
	294	REAL, DIMENSION(klon) :: zfice,zneb,znebprecip
	295	REAL :: zmelt,zrain,zsnow,zprecip
	296	REAL, DIMENSION(klon) :: dzfice
[5007]	297	REAL, DIMENSION(klon) :: zfice_turb, dzfice_turb
[4654]	298	REAL :: zsolid
	299	REAL, DIMENSION(klon) :: qtot, qzero
	300	REAL, DIMENSION(klon) :: dqsl,dqsi
	301	REAL :: smallestreal
[3999]	302	! Variables for Bergeron process
[4654]	303	REAL :: zcp, coef1, DeltaT, Deltaq, Deltaqprecl
	304	REAL, DIMENSION(klon) :: zqpreci, zqprecl
[3999]	305	! Variables precipitation energy conservation
[4654]	306	REAL, DIMENSION(klon) :: zmqc
	307	REAL :: zalpha_tr
	308	REAL :: zfrac_lessi
	309	REAL, DIMENSION(klon) :: zprec_cond
[4803]	310	REAL :: zmair
[4654]	311	REAL :: zcpair, zcpeau
	312	REAL, DIMENSION(klon) :: zlh_solid
[4803]	313	REAL, DIMENSION(klon) :: ztupnew
[4913]	314	REAL, DIMENSION(klon) :: zqvapclr, zqupnew ! for poprecip evap / subl
[4654]	315	REAL :: zm_solid ! for liquid -> solid conversion
	316	REAL, DIMENSION(klon) :: zrflclr, zrflcld
	317	REAL, DIMENSION(klon) :: d_zrfl_clr_cld, d_zifl_clr_cld
	318	REAL, DIMENSION(klon) :: d_zrfl_cld_clr, d_zifl_cld_clr
	319	REAL, DIMENSION(klon) :: ziflclr, ziflcld
	320	REAL, DIMENSION(klon) :: znebprecipclr, znebprecipcld
	321	REAL, DIMENSION(klon) :: tot_zneb, tot_znebn, d_tot_zneb
	322	REAL, DIMENSION(klon) :: d_znebprecip_clr_cld, d_znebprecip_cld_clr
	323	REAL, DIMENSION(klon,klev) :: velo
	324	REAL :: vr, ffallv
	325	REAL :: qlmpc, qimpc, rnebmpc
	326	REAL, DIMENSION(klon,klev) :: radocondi, radocondl
	327	REAL :: effective_zneb
[5007]	328	REAL, DIMENSION(klon) :: zdistcltop, ztemp_cltop
	329	REAL, DIMENSION(klon) :: zqliq, zqice, zqvapcl ! for icefrac_lscp_turb
[5204]	330
	331	! for condensation and ice supersaturation
	332	REAL, DIMENSION(klon) :: qvc, shear
	333	REAL :: delta_z
	334	!--Added for ice supersaturation (ok_ice_supersat) and contrails (ok_plane_contrails)
	335	! Constants used for calculating ratios that are advected (using a parent-child
	336	! formalism). This is not done in the dynamical core because at this moment,
	337	! only isotopes can use this parent-child formalism. Note that the two constants
	338	! are the same as the one use in the dynamical core, being also defined in
	339	! dyn3d_common/infotrac.F90
	340	REAL :: min_qParent, min_ratio
[3999]	341
[4654]	342	INTEGER i, k, n, kk, iter
	343	INTEGER, DIMENSION(klon) :: n_i
[4226]	344	INTEGER ncoreczq
[4654]	345	INTEGER, DIMENSION(klon,klev) :: mpc_bl_points
[4803]	346	LOGICAL iftop
[3999]	347
[4654]	348	LOGICAL, DIMENSION(klon) :: lognormale
	349	LOGICAL, DIMENSION(klon) :: keepgoing
[3999]	350
	351	CHARACTER (len = 20) :: modname = 'lscp'
	352	CHARACTER (len = 80) :: abort_message
	353
	354
	355	!===============================================================================
	356	! INITIALISATION
	357	!===============================================================================
	358
[4226]	359	! Few initial checks
[3999]	360
[4654]	361
[3999]	362	IF (iflag_fisrtilp_qsat .LT. 0) THEN
[4226]	363	abort_message = 'lscp cannot be used with iflag_fisrtilp<0'
	364	CALL abort_physic(modname,abort_message,1)
[3999]	365	ENDIF
	366
	367	! Few initialisations
	368
[4226]	369	znebprecip(:)=0.0
[3999]	370	ctot_vol(1:klon,1:klev)=0.0
	371	rneblsvol(1:klon,1:klev)=0.0
[4226]	372	smallestreal=1.e-9
	373	znebprecipclr(:)=0.0
	374	znebprecipcld(:)=0.0
[3999]	375	mpc_bl_points(:,:)=0
	376
	377	IF (prt_level>9) WRITE(lunout,*) 'NUAGES4 A. JAM'
	378
	379	! AA for 'safety' reasons
	380	zalpha_tr = 0.
	381	zfrac_lessi = 0.
[4380]	382	beta(:,:)= 0.
[3999]	383
[4380]	384	! Initialisation of variables:
	385
[3999]	386	prfl(:,:) = 0.0
	387	psfl(:,:) = 0.0
	388	d_t(:,:) = 0.0
	389	d_q(:,:) = 0.0
	390	d_ql(:,:) = 0.0
	391	d_qi(:,:) = 0.0
	392	rneb(:,:) = 0.0
[4530]	393	pfraclr(:,:)=0.0
	394	pfracld(:,:)=0.0
[5007]	395	cldfraliq(:,:)=0.
	396	sigma2_icefracturb(:,:)=0.
	397	mean_icefracturb(:,:)=0.
[4412]	398	radocond(:,:) = 0.0
[3999]	399	radicefrac(:,:) = 0.0
[4226]	400	frac_nucl(:,:) = 1.0
	401	frac_impa(:,:) = 1.0
[3999]	402	rain(:) = 0.0
	403	snow(:) = 0.0
[4114]	404	zoliq(:)=0.0
	405	zfice(:)=0.0
	406	dzfice(:)=0.0
[5007]	407	zfice_turb(:)=0.0
	408	dzfice_turb(:)=0.0
[4114]	409	zqprecl(:)=0.0
	410	zqpreci(:)=0.0
[3999]	411	zrfl(:) = 0.0
	412	zifl(:) = 0.0
[4114]	413	ziflprev(:)=0.0
[3999]	414	zneb(:) = seuil_neb
[4226]	415	zrflclr(:) = 0.0
	416	ziflclr(:) = 0.0
	417	zrflcld(:) = 0.0
	418	ziflcld(:) = 0.0
	419	tot_zneb(:) = 0.0
	420	tot_znebn(:) = 0.0
	421	d_tot_zneb(:) = 0.0
	422	qzero(:) = 0.0
[5007]	423	zdistcltop(:)=0.0
	424	ztemp_cltop(:) = 0.0
[4803]	425	ztupnew(:)=0.0
[5204]	426
[4654]	427	distcltop(:,:)=0.
	428	temp_cltop(:,:)=0.
[5007]	429
[5204]	430	!--Ice supersaturation
	431	gamma_cond(:,:) = 1.
	432	qissr(:,:) = 0.
	433	issrfra(:,:) = 0.
	434	dcf_sub(:,:) = 0.
	435	dcf_con(:,:) = 0.
	436	dcf_mix(:,:) = 0.
	437	dqi_adj(:,:) = 0.
	438	dqi_sub(:,:) = 0.
	439	dqi_con(:,:) = 0.
	440	dqi_mix(:,:) = 0.
	441	dqvc_adj(:,:) = 0.
	442	dqvc_sub(:,:) = 0.
	443	dqvc_con(:,:) = 0.
	444	dqvc_mix(:,:) = 0.
	445	fcontrN(:,:) = 0.
	446	fcontrP(:,:) = 0.
	447	Tcontr(:,:) = missing_val
	448	qcontr(:,:) = missing_val
	449	qcontr2(:,:) = missing_val
	450	dcf_avi(:,:) = 0.
	451	dqi_avi(:,:) = 0.
	452	dqvc_avi(:,:) = 0.
	453	qvc(:) = 0.
	454	shear(:) = 0.
	455	min_qParent = 1.e-30
	456	min_ratio = 1.e-16
	457
[4803]	458	!-- poprecip
[4830]	459	qraindiag(:,:)= 0.
	460	qsnowdiag(:,:)= 0.
[4819]	461	dqreva(:,:) = 0.
	462	dqrauto(:,:) = 0.
	463	dqrmelt(:,:) = 0.
	464	dqrfreez(:,:) = 0.
	465	dqrcol(:,:) = 0.
	466	dqssub(:,:) = 0.
	467	dqsauto(:,:) = 0.
	468	dqsrim(:,:) = 0.
	469	dqsagg(:,:) = 0.
	470	dqsfreez(:,:) = 0.
	471	dqsmelt(:,:) = 0.
[4913]	472	zqupnew(:) = 0.
	473	zqvapclr(:) = 0.
[3999]	474
[4803]	475
	476
[4392]	477	!c_iso: variable initialisation for iso
	478
	479
[3999]	480	!===============================================================================
	481	! BEGINNING OF VERTICAL LOOP FROM TOP TO BOTTOM
	482	!===============================================================================
	483
	484	ncoreczq=0
	485
	486	DO k = klev, 1, -1
	487
[4803]	488	IF (k.LE.klev-1) THEN
	489	iftop=.false.
	490	ELSE
	491	iftop=.true.
	492	ENDIF
	493
[3999]	494	! Initialisation temperature and specific humidity
[5007]	495	! temp(klon,klev) is not modified by the routine, instead all changes in temperature are made on zt
	496	! at the end of the klon loop, a temperature incremtent d_t due to all processes
	497	! (thermalization, evap/sub incoming precip, cloud formation, precipitation processes) is calculated
	498	! d_t = temperature tendency due to lscp
	499	! The temperature of the overlying layer is updated here because needed for thermalization
[3999]	500	DO i = 1, klon
[4654]	501	zt(i)=temp(i,k)
[4686]	502	zq(i)=qt(i,k)
[4803]	503	IF (.not. iftop) THEN
[4913]	504	ztupnew(i) = temp(i,k+1) + d_t(i,k+1)
	505	zqupnew(i) = qt(i,k+1) + d_q(i,k+1) + d_ql(i,k+1) + d_qi(i,k+1)
	506	!--zqs(i) is the saturation specific humidity in the layer above
	507	zqvapclr(i) = MAX(0., qt(i,k+1) + d_q(i,k+1) - rneb(i,k+1) * zqs(i))
[4803]	508	ENDIF
[4392]	509	!c_iso init of iso
[3999]	510	ENDDO
[4803]	511
	512	!================================================================
	513	! Flag for the new and more microphysical treatment of precipitation from Atelier Nuage (R)
	514	IF (ok_poprecip) THEN
	515
[4879]	516	CALL poprecip_precld(klon, dtime, iftop, paprs(:,k), paprs(:,k+1), pplay(:,k), &
[4803]	517	zt, ztupnew, zq, zmqc, znebprecipclr, znebprecipcld, &
[4913]	518	zqvapclr, zqupnew, &
[4803]	519	zrfl, zrflclr, zrflcld, &
	520	zifl, ziflclr, ziflcld, &
	521	dqreva(:,k),dqssub(:,k) &
	522	)
	523
	524	!================================================================
	525	ELSE
	526
[3999]	527	! --------------------------------------------------------------------
[4803]	528	! P1> Thermalization of precipitation falling from the overlying layer
[3999]	529	! --------------------------------------------------------------------
[4412]	530	! Computes air temperature variation due to enthalpy transported by
[3999]	531	! precipitation. Precipitation is then thermalized with the air in the
	532	! layer.
	533	! The precipitation should remain thermalized throughout the different
[4412]	534	! thermodynamical transformations.
	535	! The corresponding water mass should
[3999]	536	! be added when calculating the layer's enthalpy change with
	537	! temperature
[4412]	538	! See lmdzpedia page todoan
	539	! todoan: check consistency with ice phase
	540	! todoan: understand why several steps
[3999]	541	! ---------------------------------------------------------------------
	542
[4803]	543	IF (iftop) THEN
[3999]	544
	545	DO i = 1, klon
[4803]	546	zmqc(i) = 0.
	547	ENDDO
	548
	549	ELSE
	550
	551	DO i = 1, klon
[3999]	552
[4803]	553	zmair=(paprs(i,k)-paprs(i,k+1))/RG
[3999]	554	! no condensed water so cp=cp(vapor+dry air)
	555	! RVTMP2=rcpv/rcpd-1
	556	zcpair=RCPD(1.0+RVTMP2zq(i))
[4226]	557	zcpeau=RCPD*RVTMP2
	558
[3999]	559	! zmqc: precipitation mass that has to be thermalized with
	560	! layer's air so that precipitation at the ground has the
	561	! same temperature as the lowermost layer
[4803]	562	zmqc(i) = (zrfl(i)+zifl(i))*dtime/zmair
[3999]	563	! t(i,k+1)+d_t(i,k+1): new temperature of the overlying layer
[4803]	564	zt(i) = ( ztupnew(i)zmqc(i)zcpeau + zcpair*zt(i) ) &
[3999]	565	/ (zcpair + zmqc(i)*zcpeau)
[4226]	566
[3999]	567	ENDDO
	568
	569	ENDIF
	570
	571	! --------------------------------------------------------------------
[4803]	572	! P2> Precipitation evaporation/sublimation/melting
[3999]	573	! --------------------------------------------------------------------
[4803]	574	! A part of the precipitation coming from above is evaporated/sublimated/melted.
[3999]	575	! --------------------------------------------------------------------
[4803]	576
[4397]	577	IF (iflag_evap_prec.GE.1) THEN
[3999]	578
[4072]	579	! Calculation of saturation specific humidity
	580	! depending on temperature:
[4380]	581	CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:))
[4072]	582	! wrt liquid water
[4380]	583	CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,1,.false.,qsl(:),dqsl(:))
[4072]	584	! wrt ice
[4380]	585	CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,2,.false.,qsi(:),dqsi(:))
[3999]	586
	587	DO i = 1, klon
[4226]	588
[3999]	589	! if precipitation
	590	IF (zrfl(i)+zifl(i).GT.0.) THEN
[4226]	591
[4563]	592	! LudoTP: we only account for precipitation evaporation in the clear-sky (iflag_evap_prec>=4).
[4392]	593	! c_iso: likely important to distinguish cs from neb isotope precipitation
	594
[4563]	595	IF (iflag_evap_prec.GE.4) THEN
[4226]	596	zrfl(i) = zrflclr(i)
	597	zifl(i) = ziflclr(i)
	598	ENDIF
[3999]	599
	600	IF (iflag_evap_prec.EQ.1) THEN
	601	znebprecip(i)=zneb(i)
	602	ELSE
	603	znebprecip(i)=MAX(zneb(i),znebprecip(i))
	604	ENDIF
	605
[4563]	606	IF (iflag_evap_prec.GT.4) THEN
	607	! Max evaporation not to saturate the clear sky precip fraction
	608	! i.e. the fraction where evaporation occurs
	609	zqev0 = MAX(0.0, (zqs(i)-zq(i))*znebprecipclr(i))
	610	ELSEIF (iflag_evap_prec .EQ. 4) THEN
[4226]	611	! Max evaporation not to saturate the whole mesh
[4563]	612	! Pay attention -> lead to unrealistic and excessive evaporation
[4226]	613	zqev0 = MAX(0.0, zqs(i)-zq(i))
	614	ELSE
	615	! Max evap not to saturate the fraction below the cloud
	616	zqev0 = MAX(0.0, (zqs(i)-zq(i))*znebprecip(i))
	617	ENDIF
[3999]	618
	619	! Evaporation of liquid precipitation coming from above
	620	! dP/dz=beta(1-q/qsat)sqrt(P)
	621	! formula from Sundquist 1988, Klemp & Wilhemson 1978
[4563]	622	! LTP: evaporation only in the clear sky part (iflag_evap_prec>=4)
[3999]	623
	624	IF (iflag_evap_prec.EQ.3) THEN
[4072]	625	zqevt = znebprecip(i)coef_eva(1.0-zq(i)/qsl(i)) &
[3999]	626	*SQRT(zrfl(i)/max(1.e-4,znebprecip(i))) &
	627	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
[4563]	628	ELSE IF (iflag_evap_prec.GE.4) THEN
[4072]	629	zqevt = znebprecipclr(i)coef_eva(1.0-zq(i)/qsl(i)) &
[3999]	630	*SQRT(zrfl(i)/max(1.e-8,znebprecipclr(i))) &
	631	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	632	ELSE
[4072]	633	zqevt = 1.coef_eva(1.0-zq(i)/qsl(i))*SQRT(zrfl(i)) &
[3999]	634	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	635	ENDIF
	636
[4226]	637	zqevt = MAX(0.0,MIN(zqevt,zrfl(i))) &
	638	RGdtime/(paprs(i,k)-paprs(i,k+1))
[3999]	639
	640	! sublimation of the solid precipitation coming from above
	641	IF (iflag_evap_prec.EQ.3) THEN
[4830]	642	zqevti = znebprecip(i)coef_sub(1.0-zq(i)/qsi(i)) &
[3999]	643	*SQRT(zifl(i)/max(1.e-4,znebprecip(i))) &
	644	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
[4563]	645	ELSE IF (iflag_evap_prec.GE.4) THEN
[4830]	646	zqevti = znebprecipclr(i)coef_sub(1.0-zq(i)/qsi(i)) &
[3999]	647	*SQRT(zifl(i)/max(1.e-8,znebprecipclr(i))) &
	648	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	649	ELSE
[4830]	650	zqevti = 1.coef_sub(1.0-zq(i)/qsi(i))*SQRT(zifl(i)) &
[3999]	651	(paprs(i,k)-paprs(i,k+1))/pplay(i,k)zt(i)*RD/RG
	652	ENDIF
[4226]	653
[3999]	654	zqevti = MAX(0.0,MIN(zqevti,zifl(i))) &
[4226]	655	RGdtime/(paprs(i,k)-paprs(i,k+1))
[3999]	656
	657	! A. JAM
	658	! Evaporation limit: we ensure that the layer's fraction below
	659	! the cloud or the whole mesh (depending on iflag_evap_prec)
	660	! does not reach saturation. In this case, we
	661	! redistribute zqev0 conserving the ratio liquid/ice
[4226]	662
[3999]	663	IF (zqevt+zqevti.GT.zqev0) THEN
	664	zqev=zqev0*zqevt/(zqevt+zqevti)
	665	zqevi=zqev0*zqevti/(zqevt+zqevti)
	666	ELSE
	667	zqev=zqevt
	668	zqevi=zqevti
	669	ENDIF
	670
	671
[4392]	672	! New solid and liquid precipitation fluxes after evap and sublimation
[3999]	673	zrfln(i) = Max(0.,zrfl(i) - zqev*(paprs(i,k)-paprs(i,k+1)) &
	674	/RG/dtime)
	675	zifln(i) = Max(0.,zifl(i) - zqevi*(paprs(i,k)-paprs(i,k+1)) &
	676	/RG/dtime)
	677
[4392]	678
[3999]	679	! vapor, temperature, precip fluxes update
[4803]	680	! vapor is updated after evaporation/sublimation (it is increased)
[3999]	681	zq(i) = zq(i) - (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) &
	682	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime
[4803]	683	! zmqc is the total condensed water in the precip flux (it is decreased)
[3999]	684	zmqc(i) = zmqc(i) + (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) &
	685	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime
[4803]	686	! air and precip temperature (i.e., gridbox temperature)
	687	! is updated due to latent heat cooling
[3999]	688	zt(i) = zt(i) + (zrfln(i)-zrfl(i)) &
	689	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime &
	690	* RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) &
	691	+ (zifln(i)-zifl(i)) &
	692	* (RG/(paprs(i,k)-paprs(i,k+1)))*dtime &
	693	* RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)))
	694
	695	! New values of liquid and solid precipitation
	696	zrfl(i) = zrfln(i)
	697	zifl(i) = zifln(i)
	698
[4392]	699	! c_iso here call_reevap that updates isotopic zrfl, zifl (in inout)
	700	! due to evap + sublim
	701
	702
[4563]	703	IF (iflag_evap_prec.GE.4) THEN
[4226]	704	zrflclr(i) = zrfl(i)
	705	ziflclr(i) = zifl(i)
	706	IF(zrflclr(i) + ziflclr(i).LE.0) THEN
	707	znebprecipclr(i) = 0.0
	708	ENDIF
	709	zrfl(i) = zrflclr(i) + zrflcld(i)
	710	zifl(i) = ziflclr(i) + ziflcld(i)
	711	ENDIF
[3999]	712
[4392]	713	! c_iso duplicate for isotopes or loop on isotopes
[3999]	714
[4392]	715	! Melting:
[4412]	716	zmelt = ((zt(i)-RTT)/(ztfondue-RTT)) ! JYG
[3999]	717	! precip fraction that is melted
	718	zmelt = MIN(MAX(zmelt,0.),1.)
[4392]	719
[4412]	720	! update of rainfall and snowfall due to melting
[4563]	721	IF (iflag_evap_prec.GE.4) THEN
[4226]	722	zrflclr(i)=zrflclr(i)+zmelt*ziflclr(i)
	723	zrflcld(i)=zrflcld(i)+zmelt*ziflcld(i)
	724	zrfl(i)=zrflclr(i)+zrflcld(i)
	725	ELSE
	726	zrfl(i)=zrfl(i)+zmelt*zifl(i)
	727	ENDIF
[4412]	728
	729
[4392]	730	! c_iso: melting of isotopic precipi with zmelt (no fractionation)
[3999]	731
[4803]	732	! Latent heat of melting because of precipitation melting
	733	! NB: the air + precip temperature is simultaneously updated
[3999]	734	zt(i)=zt(i)-zifl(i)zmelt(RG*dtime)/(paprs(i,k)-paprs(i,k+1)) &
	735	RLMLT/RCPD/(1.0+RVTMP2(zq(i)+zmqc(i)))
[4869]	736
	737	IF (iflag_evap_prec.GE.4) THEN
	738	ziflclr(i)=ziflclr(i)*(1.-zmelt)
	739	ziflcld(i)=ziflcld(i)*(1.-zmelt)
	740	zifl(i)=ziflclr(i)+ziflcld(i)
	741	ELSE
	742	zifl(i)=zifl(i)*(1.-zmelt)
	743	ENDIF
[3999]	744
	745	ELSE
	746	! if no precip, we reinitialize the cloud fraction used for the precip to 0
	747	znebprecip(i)=0.
	748
	749	ENDIF ! (zrfl(i)+zifl(i).GT.0.)
	750
[4803]	751	ENDDO ! loop on klon
[4226]	752
[3999]	753	ENDIF ! (iflag_evap_prec>=1)
	754
[4803]	755	ENDIF ! (ok_poprecip)
	756
[3999]	757	! --------------------------------------------------------------------
	758	! End precip evaporation
	759	! --------------------------------------------------------------------
	760
	761	! Calculation of qsat, L/Cp*dqsat/dT and ncoreczq counter
	762	!-------------------------------------------------------
[4226]	763
[4072]	764	qtot(:)=zq(:)+zmqc(:)
[4380]	765	CALL calc_qsat_ecmwf(klon,zt(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:))
[4072]	766	DO i = 1, klon
[3999]	767	zdelta = MAX(0.,SIGN(1.,RTT-zt(i)))
[4059]	768	zdqsdT_raw(i) = zdqs(i)RCPD(1.0+RVTMP2zq(i)) / (RLVTT(1.-zdelta) + RLSTT*zdelta)
[3999]	769	IF (zq(i) .LT. 1.e-15) THEN
	770	ncoreczq=ncoreczq+1
	771	zq(i)=1.e-15
	772	ENDIF
[4392]	773	! c_iso: do something similar for isotopes
[3999]	774
[4072]	775	ENDDO
[3999]	776
	777	! --------------------------------------------------------------------
	778	! P2> Cloud formation
	779	!---------------------------------------------------------------------
	780	!
	781	! Unlike fisrtilp, we always assume a 'fractional cloud' approach
	782	! i.e. clouds occupy only a fraction of the mesh (the subgrid distribution
	783	! is prescribed and depends on large scale variables and boundary layer
	784	! properties)
	785	! The decrease in condensed part due tu latent heating is taken into
	786	! account
	787	! -------------------------------------------------------------------
	788
	789	! P2.1> With the PDFs (log-normal, bigaussian)
[4424]	790	! cloud properties calculation with the initial values of t and q
[3999]	791	! ----------------------------------------------------------------
	792
	793	! initialise gammasat and qincloud_mpc
	794	gammasat(:)=1.
	795	qincloud_mpc(:)=0.
	796
	797	IF (iflag_cld_th.GE.5) THEN
[4910]	798	! Cloud cover and content in meshes affected by shallow convection,
	799	! are retrieved from a bi-gaussian distribution of the saturation deficit
	800	! following Jam et al. 2013
[3999]	801
[4910]	802	IF (iflag_cloudth_vert.LE.2) THEN
	803	! Old version of Arnaud Jam
[3999]	804
[4910]	805	CALL cloudth(klon,klev,k,tv, &
	806	zq,qta,fraca, &
	807	qcloud,ctot,pspsk,paprs,pplay,tla,thl, &
[4654]	808	ratqs,zqs,temp, &
[4651]	809	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv)
[3999]	810
[4651]	811
[3999]	812	ELSEIF (iflag_cloudth_vert.GE.3 .AND. iflag_cloudth_vert.LE.5) THEN
[4910]	813	! Default version of Arnaud Jam
	814
	815	CALL cloudth_v3(klon,klev,k,tv, &
	816	zq,qta,fraca, &
	817	qcloud,ctot,ctot_vol,pspsk,paprs,pplay,tla,thl, &
[5208]	818	ratqs,sigma_qtherm,zqs,temp, &
[4651]	819	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv)
[3999]	820
	821
	822	ELSEIF (iflag_cloudth_vert.EQ.6) THEN
[4910]	823	! Jean Jouhaud's version, with specific separation between surface and volume
	824	! cloud fraction Decembre 2018
[3999]	825
[4910]	826	CALL cloudth_v6(klon,klev,k,tv, &
	827	zq,qta,fraca, &
	828	qcloud,ctot,ctot_vol,pspsk,paprs,pplay,tla,thl, &
[4654]	829	ratqs,zqs,temp, &
[4651]	830	cloudth_sth,cloudth_senv,cloudth_sigmath,cloudth_sigmaenv)
[3999]	831
[4910]	832	ELSEIF (iflag_cloudth_vert .EQ. 7) THEN
	833	! Updated version of Arnaud Jam (correction by E. Vignon) + adapted treatment
[5007]	834	! for boundary-layer mixed phase clouds
[4910]	835	CALL cloudth_mpc(klon,klev,k,mpc_bl_points,zt,zq,qta(:,k),fraca(:,k), &
	836	pspsk(:,k),paprs(:,k+1),paprs(:,k),pplay(:,k), tla(:,k), &
	837	ratqs(:,k),qcloud,qincloud_mpc,zfice_th,ctot(:,k),ctot_vol(:,k), &
	838	cloudth_sth(:,k),cloudth_senv(:,k),cloudth_sigmath(:,k),cloudth_sigmaenv(:,k))
	839
[3999]	840	ENDIF
	841
	842
	843	DO i=1,klon
	844	rneb(i,k)=ctot(i,k)
	845	rneblsvol(i,k)=ctot_vol(i,k)
	846	zqn(i)=qcloud(i)
[5204]	847	!--AB grid-mean vapor in the cloud - we assume saturation adjustment
	848	qvc(i) = rneb(i,k) * zqs(i)
[3999]	849	ENDDO
	850
	851	ENDIF
	852
	853	IF (iflag_cld_th .LE. 4) THEN
	854
	855	! lognormal
[5007]	856	lognormale(:) = .TRUE.
[3999]	857
	858	ELSEIF (iflag_cld_th .GE. 6) THEN
	859
	860	! lognormal distribution when no thermals
[5007]	861	lognormale(:) = fraca(:,k) < min_frac_th_cld
[3999]	862
	863	ELSE
[4226]	864	! When iflag_cld_th=5, we always assume
[3999]	865	! bi-gaussian distribution
[5007]	866	lognormale(:) = .FALSE.
[3999]	867
	868	ENDIF
	869
	870	DT(:) = 0.
	871	n_i(:)=0
	872	Tbef(:)=zt(:)
	873	qlbef(:)=0.
	874
	875	! Treatment of non-boundary layer clouds (lognormale)
	876	! condensation with qsat(T) variation (adaptation)
[4424]	877	! Iterative resolution to converge towards qsat
	878	! with update of temperature, ice fraction and qsat at
	879	! each iteration
[4226]	880
[4424]	881	! todoan -> sensitivity to iflag_fisrtilp_qsat
[3999]	882	DO iter=1,iflag_fisrtilp_qsat+1
[4226]	883
[5204]	884	keepgoing(:) = .FALSE.
	885
[3999]	886	DO i=1,klon
	887
[4424]	888	! keepgoing = .true. while convergence is not satisfied
[4226]	889
[5204]	890	IF (((ABS(DT(i)).GT.DDT0) .OR. (n_i(i) .EQ. 0)) .AND. lognormale(i)) THEN
[4226]	891
[3999]	892	! if not convergence:
[5204]	893	! we calculate a new iteration
	894	keepgoing(i) = .TRUE.
[3999]	895
	896	! P2.2.1> cloud fraction and condensed water mass calculation
	897	! Calculated variables:
	898	! rneb : cloud fraction
	899	! zqn : total water within the cloud
	900	! zcond: mean condensed water within the mesh
	901	! rhcl: clear-sky relative humidity
	902	!---------------------------------------------------------------
	903
[4424]	904	! new temperature that only serves in the iteration process:
[3999]	905	Tbef(i)=Tbef(i)+DT(i)
	906
	907	! Rneb, qzn and zcond for lognormal PDFs
[4072]	908	qtot(i)=zq(i)+zmqc(i)
[4226]	909
[4072]	910	ENDIF
[3999]	911
[4072]	912	ENDDO
	913
[4380]	914	! Calculation of saturation specific humidity and ice fraction
[4226]	915	CALL calc_qsat_ecmwf(klon,Tbef(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:))
	916	CALL calc_gammasat(klon,Tbef(:),qtot(:),pplay(:,k),gammasat(:),dgammasatdt(:))
[4072]	917	! saturation may occur at a humidity different from qsat (gamma qsat), so gamma correction for dqs
	918	zdqs(:) = gammasat(:)zdqs(:)+zqs(:)dgammasatdt(:)
[4562]	919	! cloud phase determination
	920	IF (iflag_t_glace.GE.4) THEN
	921	! For iflag_t_glace GE 4 the phase partition function dependends on temperature AND distance to cloud top
[5007]	922	CALL distance_to_cloud_top(klon,klev,k,temp,pplay,paprs,rneb,zdistcltop,ztemp_cltop)
[4562]	923	ENDIF
[4072]	924
[5007]	925	CALL icefrac_lscp(klon, zt(:), iflag_ice_thermo, zdistcltop(:),ztemp_cltop(:),zfice(:),dzfice(:))
	926
[5204]	927	!--AB Activates a condensation scheme that allows for
	928	!--ice supersaturation and contrails evolution from aviation
	929	IF (ok_ice_supersat) THEN
	930
	931	!--Calculate the shear value (input for condensation and ice supersat)
	932	DO i = 1, klon
	933	!--Cell thickness [m]
	934	delta_z = ( paprs(i,k) - paprs(i,k+1) ) / RG / pplay(i,k) * Tbef(i) * RD
	935	IF ( iftop ) THEN
	936	! top
	937	shear(i) = SQRT( ( (u_seri(i,k) - u_seri(i,k-1)) / delta_z )**2. &
	938	+ ( (v_seri(i,k) - v_seri(i,k-1)) / delta_z )**2. )
	939	ELSEIF ( k .EQ. 1 ) THEN
	940	! surface
	941	shear(i) = SQRT( ( (u_seri(i,k+1) - u_seri(i,k)) / delta_z )**2. &
	942	+ ( (v_seri(i,k+1) - v_seri(i,k)) / delta_z )**2. )
	943	ELSE
	944	! other layers
	945	shear(i) = SQRT( ( ( (u_seri(i,k+1) + u_seri(i,k)) / 2. &
	946	- (u_seri(i,k) + u_seri(i,k-1)) / 2. ) / delta_z )**2. &
	947	+ ( ( (v_seri(i,k+1) + v_seri(i,k)) / 2. &
	948	- (v_seri(i,k) + v_seri(i,k-1)) / 2. ) / delta_z )**2. )
	949	ENDIF
	950	ENDDO
	951
	952	!---------------------------------------------
	953	!-- CONDENSATION AND ICE SUPERSATURATION --
	954	!---------------------------------------------
	955
	956	CALL condensation_ice_supersat( &
	957	klon, dtime, missing_val, &
	958	pplay(:,k), paprs(:,k), paprs(:,k+1), &
	959	cf_seri(:,k), rvc_seri(:,k), ratio_qi_qtot(:,k), &
	960	shear(:), tke_dissip(:,k), cell_area(:), &
	961	Tbef(:), zq(:), zqs(:), gammasat(:), ratqs(:,k), keepgoing(:), &
	962	rneb(:,k), zqn(:), qvc(:), issrfra(:,k), qissr(:,k), &
	963	dcf_sub(:,k), dcf_con(:,k), dcf_mix(:,k), &
	964	dqi_adj(:,k), dqi_sub(:,k), dqi_con(:,k), dqi_mix(:,k), &
	965	dqvc_adj(:,k), dqvc_sub(:,k), dqvc_con(:,k), dqvc_mix(:,k), &
	966	Tcontr(:,k), qcontr(:,k), qcontr2(:,k), fcontrN(:,k), fcontrP(:,k), &
	967	flight_dist(:,k), flight_h2o(:,k), &
	968	dcf_avi(:,k), dqi_avi(:,k), dqvc_avi(:,k))
	969
	970
[5211]	971	ELSE
	972	!--generalised lognormal condensation scheme (Bony and Emanuel 2001)
	973
[5241]	974	CALL condensation_lognormal( &
	975	klon, Tbef, zq, zqs, gammasat, ratqs(:,k), &
	976	keepgoing, rneb(:,k), zqn, qvc)
	977	! CALL condensation_lognormal_test( &
	978	! klon, klev, k, keepgoing, ratqs, gammasat, zq, zqs, &
	979	! zqn, qvc, rneb)
[5204]	980
	981
	982	ENDIF ! .NOT. ok_ice_supersat
[4226]	983
[5204]	984	DO i=1,klon
	985	IF (keepgoing(i)) THEN
[3999]	986
	987	! If vertical heterogeneity, change fraction by volume as well
	988	IF (iflag_cloudth_vert.GE.3) THEN
	989	ctot_vol(i,k)=rneb(i,k)
	990	rneblsvol(i,k)=ctot_vol(i,k)
	991	ENDIF
	992
	993
[4072]	994	! P2.2.2> Approximative calculation of temperature variation DT
	995	! due to condensation.
	996	! Calculated variables:
	997	! dT : temperature change due to condensation
	998	!---------------------------------------------------------------
[3999]	999
	1000
	1001	IF (zfice(i).LT.1) THEN
	1002	cste=RLVTT
	1003	ELSE
	1004	cste=RLSTT
	1005	ENDIF
[5007]	1006
	1007	! LEA_R : check formule
[5204]	1008	IF ( ok_unadjusted_clouds ) THEN
	1009	!--AB We relax the saturation adjustment assumption
	1010	!-- qvc (grid-mean vapor in cloud) is calculated by the condensation scheme
	1011	IF ( rneb(i,k) .GT. eps ) THEN
	1012	qlbef(i) = MAX(0., zqn(i) - qvc(i) / rneb(i,k))
	1013	ELSE
	1014	qlbef(i) = 0.
	1015	ENDIF
	1016	ELSE
	1017	qlbef(i)=max(0.,zqn(i)-zqs(i))
	1018	ENDIF
	1019
[3999]	1020	num = -Tbef(i)+zt(i)+rneb(i,k)((1-zfice(i))RLVTT &
[4226]	1021	+zfice(i)RLSTT)/RCPD/(1.0+RVTMP2(zq(i)+zmqc(i)))*qlbef(i)
[3999]	1022	denom = 1.+rneb(i,k)((1-zfice(i))RLVTT+zfice(i)RLSTT)/cstezdqs(i) &
	1023	-(RLSTT-RLVTT)/RCPD/(1.0+RVTMP2(zq(i)+zmqc(i)))rneb(i,k) &
[4226]	1024	qlbef(i)dzfice(i)
[4424]	1025	! here we update a provisory temperature variable that only serves in the iteration
	1026	! process
[3999]	1027	DT(i)=num/denom
	1028	n_i(i)=n_i(i)+1
	1029
[4424]	1030	ENDIF ! end keepgoing
[3999]	1031
	1032	ENDDO ! end loop on i
	1033
	1034	ENDDO ! iter=1,iflag_fisrtilp_qsat+1
	1035
	1036	! P2.3> Final quantities calculation
	1037	! Calculated variables:
	1038	! rneb : cloud fraction
	1039	! zcond: mean condensed water in the mesh
	1040	! zqn : mean water vapor in the mesh
[4562]	1041	! zfice: ice fraction in clouds
[3999]	1042	! zt : temperature
	1043	! rhcl : clear-sky relative humidity
	1044	! ----------------------------------------------------------------
	1045
	1046
[4562]	1047	! For iflag_t_glace GE 4 the phase partition function dependends on temperature AND distance to cloud top
	1048	IF (iflag_t_glace.GE.4) THEN
[5007]	1049	CALL distance_to_cloud_top(klon,klev,k,temp,pplay,paprs,rneb,zdistcltop,ztemp_cltop)
	1050	distcltop(:,k)=zdistcltop(:)
	1051	temp_cltop(:,k)=ztemp_cltop(:)
	1052	ENDIF
[3999]	1053
[5007]	1054	! Partition function depending on temperature
[5204]	1055	CALL icefrac_lscp(klon, zt, iflag_ice_thermo, zdistcltop, ztemp_cltop, zfice, dzfice)
[4562]	1056
[5007]	1057	! Partition function depending on tke for non shallow-convective clouds
	1058	IF (iflag_icefrac .GE. 1) THEN
	1059
	1060	CALL icefrac_lscp_turb(klon, dtime, Tbef, pplay(:,k), paprs(:,k), paprs(:,k+1), qice_save(:,k), ziflcld, zqn, &
	1061	rneb(:,k), tke(:,k), tke_dissip(:,k), zqliq, zqvapcl, zqice, zfice_turb, dzfice_turb, cldfraliq(:,k),sigma2_icefracturb(:,k), mean_icefracturb(:,k))
	1062
	1063	ENDIF
	1064
[4562]	1065	! Water vapor update, Phase determination and subsequent latent heat exchange
[3999]	1066	DO i=1, klon
[5007]	1067	! Overwrite phase partitioning in boundary layer mixed phase clouds when the
	1068	! iflag_cloudth_vert=7 and specific param is activated
[3999]	1069	IF (mpc_bl_points(i,k) .GT. 0) THEN
	1070	zcond(i) = MAX(0.0,qincloud_mpc(i))*rneb(i,k)
	1071	! following line is very strange and probably wrong
	1072	rhcl(i,k)= (zqs(i)+zq(i))/2./zqs(i)
	1073	! water vapor update and partition function if thermals
	1074	zq(i) = zq(i) - zcond(i)
[4910]	1075	zfice(i)=zfice_th(i)
[3999]	1076	ELSE
	1077	! Checks on rneb, rhcl and zqn
	1078	IF (rneb(i,k) .LE. 0.0) THEN
	1079	zqn(i) = 0.0
	1080	rneb(i,k) = 0.0
	1081	zcond(i) = 0.0
	1082	rhcl(i,k)=zq(i)/zqs(i)
	1083	ELSE IF (rneb(i,k) .GE. 1.0) THEN
	1084	zqn(i) = zq(i)
	1085	rneb(i,k) = 1.0
[5204]	1086	IF ( ok_unadjusted_clouds ) THEN
	1087	!--AB We relax the saturation adjustment assumption
	1088	!-- qvc (grid-mean vapor in cloud) is calculated by the condensation scheme
	1089	zcond(i) = MAX(0., zqn(i) - qvc(i))
	1090	ELSE
	1091	zcond(i) = MAX(0.0,zqn(i)-zqs(i))
	1092	ENDIF
[3999]	1093	rhcl(i,k)=1.0
	1094	ELSE
[5204]	1095	IF ( ok_unadjusted_clouds ) THEN
	1096	!--AB We relax the saturation adjustment assumption
	1097	!-- qvc (grid-mean vapor in cloud) is calculated by the condensation scheme
	1098	zcond(i) = MAX(0., zqn(i) * rneb(i,k) - qvc(i))
	1099	ELSE
	1100	zcond(i) = MAX(0.0,zqn(i)-zqs(i))*rneb(i,k)
	1101	ENDIF
[3999]	1102	! following line is very strange and probably wrong:
	1103	rhcl(i,k)=(zqs(i)+zq(i))/2./zqs(i)
[5007]	1104	! Overwrite partitioning for non shallow-convective clouds if iflag_icefrac>1 (icefrac turb param)
	1105	IF (iflag_icefrac .GE. 1) THEN
	1106	IF (lognormale(i)) THEN
	1107	zcond(i) = zqliq(i) + zqice(i)
	1108	zfice(i)=zfice_turb(i)
	1109	rhcl(i,k) = zqvapcl(i) * rneb(i,k) + (zq(i) - zqn(i)) * (1.-rneb(i,k))
	1110	ENDIF
	1111	ENDIF
[3999]	1112	ENDIF
	1113
[4226]	1114	! water vapor update
	1115	zq(i) = zq(i) - zcond(i)
[3999]	1116
	1117	ENDIF
	1118
[4392]	1119	! c_iso : routine that computes in-cloud supersaturation
	1120	! c_iso condensation of isotopes (zcond, zsursat, zfice, zq in input)
	1121
[3999]	1122	! temperature update due to phase change
	1123	zt(i) = zt(i) + (1.-zfice(i))*zcond(i) &
	1124	& * RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) &
	1125	+zfice(i)zcond(i) RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i)))
	1126	ENDDO
	1127
	1128	! If vertical heterogeneity, change volume fraction
	1129	IF (iflag_cloudth_vert .GE. 3) THEN
	1130	ctot_vol(1:klon,k)=min(max(ctot_vol(1:klon,k),0.),1.)
	1131	rneblsvol(1:klon,k)=ctot_vol(1:klon,k)
	1132	ENDIF
[5204]	1133
	1134	!--AB Write diagnostics and tracers for ice supersaturation
	1135	IF ( ok_ice_supersat ) THEN
	1136	CALL calc_qsat_ecmwf(klon,zt,qzero,pplay(:,k),RTT,1,.false.,qsatl(:,k),zdqs)
	1137	CALL calc_qsat_ecmwf(klon,zt,qzero,pplay(:,k),RTT,2,.false.,qsati(:,k),zdqs)
[3999]	1138
[5204]	1139	DO i = 1, klon
	1140
	1141	cf_seri(i,k) = rneb(i,k)
	1142
	1143	IF ( .NOT. ok_unadjusted_clouds ) THEN
	1144	qvc(i) = zqs(i) * rneb(i,k)
	1145	ENDIF
	1146	IF ( zq(i) .GT. min_qParent ) THEN
	1147	rvc_seri(i,k) = qvc(i) / zq(i)
	1148	ELSE
	1149	rvc_seri(i,k) = min_ratio
	1150	ENDIF
	1151	!--The MIN barrier is NEEDED because of:
	1152	!-- 1) very rare pathological cases of the lsc scheme (rvc = 1. + 1e-16 sometimes)
	1153	!-- 2) the thermal scheme does NOT guarantee that qvc <= qvap (or even qincld <= qtot)
	1154	!--The MAX barrier is a safeguard that should not be activated
	1155	rvc_seri(i,k) = MIN(MAX(rvc_seri(i,k), 0.), 1.)
	1156
	1157	!--Diagnostics
	1158	gamma_cond(i,k) = gammasat(i)
	1159	IF ( issrfra(i,k) .LT. eps ) THEN
	1160	issrfra(i,k) = 0.
	1161	qissr(i,k) = 0.
	1162	ENDIF
	1163	subfra(i,k) = 1. - cf_seri(i,k) - issrfra(i,k)
	1164	qsub(i,k) = zq(i) - qvc(i) - qissr(i,k)
	1165	IF ( subfra(i,k) .LT. eps ) THEN
	1166	subfra(i,k) = 0.
	1167	qsub(i,k) = 0.
	1168	ENDIF
	1169	qcld(i,k) = qvc(i) + zcond(i)
	1170	IF ( cf_seri(i,k) .LT. eps ) THEN
	1171	qcld(i,k) = 0.
	1172	ENDIF
	1173	ENDDO
	1174	ENDIF
	1175
	1176
[3999]	1177	! ----------------------------------------------------------------
[4114]	1178	! P3> Precipitation formation
[3999]	1179	! ----------------------------------------------------------------
[4226]	1180
[4803]	1181	!================================================================
	1182	IF (ok_poprecip) THEN
	1183
	1184	DO i = 1, klon
	1185	zoliql(i) = zcond(i) * ( 1. - zfice(i) )
	1186	zoliqi(i) = zcond(i) * zfice(i)
	1187	ENDDO
	1188
	1189	CALL poprecip_postcld(klon, dtime, paprs(:,k), paprs(:,k+1), pplay(:,k), &
	1190	ctot_vol(:,k), ptconv(:,k), &
	1191	zt, zq, zoliql, zoliqi, zfice, &
	1192	rneb(:,k), znebprecipclr, znebprecipcld, &
	1193	zrfl, zrflclr, zrflcld, &
	1194	zifl, ziflclr, ziflcld, &
[4830]	1195	qraindiag(:,k), qsnowdiag(:,k), dqrauto(:,k), &
[4819]	1196	dqrcol(:,k), dqrmelt(:,k), dqrfreez(:,k), &
	1197	dqsauto(:,k), dqsagg(:,k), dqsrim(:,k), &
	1198	dqsmelt(:,k), dqsfreez(:,k) &
[4803]	1199	)
	1200
	1201	DO i = 1, klon
	1202	zoliq(i) = zoliql(i) + zoliqi(i)
	1203	IF ( zoliq(i) .GT. 0. ) THEN
	1204	zfice(i) = zoliqi(i)/zoliq(i)
	1205	ELSE
	1206	zfice(i) = 0.0
	1207	ENDIF
[4819]	1208
	1209	! calculation of specific content of condensates seen by radiative scheme
	1210	IF (ok_radocond_snow) THEN
	1211	radocond(i,k) = zoliq(i)
	1212	radocondl(i,k)= radocond(i,k)*(1.-zfice(i))
[4830]	1213	radocondi(i,k)= radocond(i,k)*zfice(i)+qsnowdiag(i,k)
[4819]	1214	ELSE
	1215	radocond(i,k) = zoliq(i)
	1216	radocondl(i,k)= radocond(i,k)*(1.-zfice(i))
	1217	radocondi(i,k)= radocond(i,k)*zfice(i)
	1218	ENDIF
[4803]	1219	ENDDO
	1220
	1221	!================================================================
	1222	ELSE
	1223
[3999]	1224	! LTP:
[4563]	1225	IF (iflag_evap_prec .GE. 4) THEN
[3999]	1226
	1227	!Partitionning between precipitation coming from clouds and that coming from CS
	1228
	1229	!0) Calculate tot_zneb, total cloud fraction above the cloud
	1230	!assuming a maximum-random overlap (voir Jakob and Klein, 2000)
	1231
	1232	DO i=1, klon
[4424]	1233	tot_znebn(i) = 1. - (1.-tot_zneb(i))*(1 - max(rneb(i,k),zneb(i))) &
	1234	/(1.-min(zneb(i),1.-smallestreal))
[3999]	1235	d_tot_zneb(i) = tot_znebn(i) - tot_zneb(i)
	1236	tot_zneb(i) = tot_znebn(i)
	1237
	1238
	1239	!1) Cloudy to clear air
	1240	d_znebprecip_cld_clr(i) = znebprecipcld(i) - min(rneb(i,k),znebprecipcld(i))
[4424]	1241	IF (znebprecipcld(i) .GT. 0.) THEN
[3999]	1242	d_zrfl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*zrflcld(i)
	1243	d_zifl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*ziflcld(i)
	1244	ELSE
	1245	d_zrfl_cld_clr(i) = 0.
	1246	d_zifl_cld_clr(i) = 0.
	1247	ENDIF
	1248
	1249	!2) Clear to cloudy air
[4226]	1250	d_znebprecip_clr_cld(i) = max(0., min(znebprecipclr(i), rneb(i,k) - d_tot_zneb(i) - zneb(i)))
[3999]	1251	IF (znebprecipclr(i) .GT. 0) THEN
	1252	d_zrfl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*zrflclr(i)
	1253	d_zifl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*ziflclr(i)
	1254	ELSE
	1255	d_zrfl_clr_cld(i) = 0.
	1256	d_zifl_clr_cld(i) = 0.
	1257	ENDIF
	1258
	1259	!Update variables
[4226]	1260	znebprecipcld(i) = znebprecipcld(i) + d_znebprecip_clr_cld(i) - d_znebprecip_cld_clr(i)
[3999]	1261	znebprecipclr(i) = znebprecipclr(i) + d_znebprecip_cld_clr(i) - d_znebprecip_clr_cld(i)
	1262	zrflcld(i) = zrflcld(i) + d_zrfl_clr_cld(i) - d_zrfl_cld_clr(i)
	1263	ziflcld(i) = ziflcld(i) + d_zifl_clr_cld(i) - d_zifl_cld_clr(i)
	1264	zrflclr(i) = zrflclr(i) + d_zrfl_cld_clr(i) - d_zrfl_clr_cld(i)
	1265	ziflclr(i) = ziflclr(i) + d_zifl_cld_clr(i) - d_zifl_clr_cld(i)
	1266
[4392]	1267	! c_iso do the same thing for isotopes precip
[3999]	1268	ENDDO
	1269	ENDIF
	1270
[4559]	1271
	1272	! Autoconversion
	1273	! -------------------------------------------------------------------------------
	1274
	1275
[4412]	1276	! Initialisation of zoliq and radocond variables
[3999]	1277
	1278	DO i = 1, klon
	1279	zoliq(i) = zcond(i)
[4072]	1280	zoliqi(i)= zoliq(i)*zfice(i)
	1281	zoliql(i)= zoliq(i)*(1.-zfice(i))
[4392]	1282	! c_iso : initialisation of zoliq* also for isotopes
[4114]	1283	zrho(i,k) = pplay(i,k) / zt(i) / RD
	1284	zdz(i) = (paprs(i,k)-paprs(i,k+1)) / (zrho(i,k)*RG)
[4072]	1285	iwc(i) = 0.
	1286	zneb(i) = MAX(rneb(i,k),seuil_neb)
[4559]	1287	radocond(i,k) = zoliq(i)/REAL(niter_lscp+1)
	1288	radocondi(i,k)=zoliq(i)*zfice(i)/REAL(niter_lscp+1)
	1289	radocondl(i,k)=zoliq(i)*(1.-zfice(i))/REAL(niter_lscp+1)
[3999]	1290	ENDDO
	1291
[4559]	1292
	1293	DO n = 1, niter_lscp
[3999]	1294
	1295	DO i=1,klon
	1296	IF (rneb(i,k).GT.0.0) THEN
[4114]	1297	iwc(i) = zrho(i,k) * zoliqi(i) / zneb(i) ! in-cloud ice condensate content
[3999]	1298	ENDIF
	1299	ENDDO
	1300
[4226]	1301	CALL fallice_velocity(klon,iwc(:),zt(:),zrho(:,k),pplay(:,k),ptconv(:,k),velo(:,k))
[3999]	1302
	1303	DO i = 1, klon
	1304
	1305	IF (rneb(i,k).GT.0.0) THEN
	1306
[4072]	1307	! Initialization of zrain, zsnow and zprecip:
	1308	zrain=0.
	1309	zsnow=0.
	1310	zprecip=0.
[4392]	1311	! c_iso same init for isotopes. Externalisation?
[3999]	1312
	1313	IF (zneb(i).EQ.seuil_neb) THEN
[4072]	1314	zprecip = 0.0
	1315	zsnow = 0.0
	1316	zrain= 0.0
[3999]	1317	ELSE
[4420]	1318
[3999]	1319	IF (ptconv(i,k)) THEN ! if convective point
	1320	zcl=cld_lc_con
	1321	zct=1./cld_tau_con
[4559]	1322	zexpo=cld_expo_con
	1323	ffallv=ffallv_con
[3999]	1324	ELSE
	1325	zcl=cld_lc_lsc
	1326	zct=1./cld_tau_lsc
[4559]	1327	zexpo=cld_expo_lsc
	1328	ffallv=ffallv_lsc
[3999]	1329	ENDIF
	1330
[4559]	1331
[3999]	1332	! if vertical heterogeneity is taken into account, we use
	1333	! the "true" volume fraction instead of a modified
	1334	! surface fraction (which is larger and artificially
	1335	! reduces the in-cloud water).
[4072]	1336
[4559]	1337	! Liquid water quantity to remove: zchau (Sundqvist, 1978)
	1338	! dqliq/dt=-qliq/tau(1-exp(-qcin/clw)*2)
	1339	!.........................................................
[3999]	1340	IF ((iflag_cloudth_vert.GE.3).AND.(iflag_rain_incloud_vol.EQ.1)) THEN
	1341
[4420]	1342	! if vertical heterogeneity is taken into account, we use
	1343	! the "true" volume fraction instead of a modified
	1344	! surface fraction (which is larger and artificially
	1345	! reduces the in-cloud water).
[4559]	1346	effective_zneb=ctot_vol(i,k)
	1347	ELSE
	1348	effective_zneb=zneb(i)
	1349	ENDIF
[4420]	1350
	1351
[4559]	1352	IF (iflag_autoconversion .EQ. 2) THEN
	1353	! two-steps resolution with niter_lscp=1 sufficient
	1354	! we first treat the second term (with exponential) in an explicit way
	1355	! and then treat the first term (-q/tau) in an exact way
	1356	zchau=zoliql(i)(1.-exp(-dtime/REAL(niter_lscp)zct &
	1357	(1.-exp(-(zoliql(i)/effective_zneb/zcl)*zexpo))))
[4420]	1358	ELSE
[4559]	1359	! old explicit resolution with subtimesteps
	1360	zchau = zctdtime/REAL(niter_lscp)zoliql(i) &
	1361	(1.0-EXP(-(zoliql(i)/effective_zneb/zcl)*zexpo))
[4420]	1362	ENDIF
	1363
	1364
[4559]	1365	! Ice water quantity to remove (Zender & Kiehl, 1997)
	1366	! dqice/dt=1/rhod(rhowice*qice)/dz
	1367	!....................................
	1368	IF (iflag_autoconversion .EQ. 2) THEN
	1369	! exact resolution, niter_lscp=1 is sufficient but works only
	1370	! with iflag_vice=0
	1371	IF (zoliqi(i) .GT. 0.) THEN
	1372	zfroi=(zoliqi(i)-((zoliqi(i)**(-dice_velo)) &
	1373	+dice_velodtime/REAL(niter_lscp)cice_velo/zdz(i)ffallv)*(-1./dice_velo))
	1374	ELSE
	1375	zfroi=0.
	1376	ENDIF
	1377	ELSE
	1378	! old explicit resolution with subtimesteps
	1379	zfroi = dtime/REAL(niter_lscp)/zdz(i)zoliqi(i)velo(i,k)
	1380	ENDIF
	1381
[4397]	1382	zrain = MIN(MAX(zchau,0.0),zoliql(i))
	1383	zsnow = MIN(MAX(zfroi,0.0),zoliqi(i))
[4072]	1384	zprecip = MAX(zrain + zsnow,0.0)
[3999]	1385
	1386	ENDIF
[4226]	1387
[4559]	1388	IF (iflag_autoconversion .GE. 1) THEN
	1389	! debugged version with phase conservation through the autoconversion process
	1390	zoliql(i) = MAX(zoliql(i)-1.*zrain , 0.0)
	1391	zoliqi(i) = MAX(zoliqi(i)-1.*zsnow , 0.0)
	1392	zoliq(i) = MAX(zoliq(i)-zprecip , 0.0)
	1393	ELSE
	1394	! bugged version with phase resetting
	1395	zoliql(i) = MAX(zoliq(i)(1.-zfice(i))-1.zrain , 0.0)
	1396	zoliqi(i) = MAX(zoliq(i)zfice(i)-1.zsnow , 0.0)
	1397	zoliq(i) = MAX(zoliq(i)-zprecip , 0.0)
	1398	ENDIF
[3999]	1399
[4392]	1400	! c_iso: call isotope_conversion (for readibility) or duplicate
	1401
[4559]	1402	radocond(i,k) = radocond(i,k) + zoliq(i)/REAL(niter_lscp+1)
	1403	radocondl(i,k) = radocondl(i,k) + zoliql(i)/REAL(niter_lscp+1)
	1404	radocondi(i,k) = radocondi(i,k) + zoliqi(i)/REAL(niter_lscp+1)
[4226]	1405
[4072]	1406	ENDIF ! rneb >0
[3999]	1407
	1408	ENDDO ! i = 1,klon
	1409
	1410	ENDDO ! n = 1,niter
	1411
[4072]	1412	! Precipitation flux calculation
[3999]	1413
	1414	DO i = 1, klon
[4380]	1415
[4563]	1416	IF (iflag_evap_prec.GE.4) THEN
[4380]	1417	ziflprev(i)=ziflcld(i)
	1418	ELSE
	1419	ziflprev(i)=zifl(i)*zneb(i)
	1420	ENDIF
[3999]	1421
	1422	IF (rneb(i,k) .GT. 0.0) THEN
	1423
[4072]	1424	! CR&JYG: We account for the Wegener-Findeisen-Bergeron process in the precipitation flux:
	1425	! If T<0C, liquid precip are converted into ice, which leads to an increase in
	1426	! temperature DeltaT. The effect of DeltaT on condensates and precipitation is roughly
	1427	! taken into account through a linearization of the equations and by approximating
	1428	! the liquid precipitation process with a "threshold" process. We assume that
	1429	! condensates are not modified during this operation. Liquid precipitation is
	1430	! removed (in the limit DeltaT<273.15-T). Solid precipitation increases.
	1431	! Water vapor increases as well
	1432	! Note that compared to fisrtilp, we always assume iflag_bergeron=2
	1433
	1434	zqpreci(i)=(zcond(i)-zoliq(i))*zfice(i)
	1435	zqprecl(i)=(zcond(i)-zoliq(i))*(1.-zfice(i))
	1436	zcp=RCPD(1.0+RVTMP2(zq(i)+zmqc(i)+zcond(i)))
	1437	coef1 = rneb(i,k)RLSTT/zcpzdqsdT_raw(i)
	1438	! Computation of DT if all the liquid precip freezes
	1439	DeltaT = RLMLTzqprecl(i) / (zcp(1.+coef1))
	1440	! T should not exceed the freezing point
	1441	! that is Delta > RTT-zt(i)
	1442	DeltaT = max( min( RTT-zt(i), DeltaT) , 0. )
	1443	zt(i) = zt(i) + DeltaT
	1444	! water vaporization due to temp. increase
	1445	Deltaq = rneb(i,k)zdqsdT_raw(i)DeltaT
	1446	! we add this vaporized water to the total vapor and we remove it from the precip
	1447	zq(i) = zq(i) + Deltaq
	1448	! The three "max" lines herebelow protect from rounding errors
	1449	zcond(i) = max( zcond(i)- Deltaq, 0. )
	1450	! liquid precipitation converted to ice precip
	1451	Deltaqprecl = -zcp/RLMLT(1.+coef1)DeltaT
	1452	zqprecl(i) = max( zqprecl(i) + Deltaqprecl, 0. )
	1453	! iced water budget
	1454	zqpreci(i) = max (zqpreci(i) - Deltaqprecl - Deltaq, 0.)
[4226]	1455
[4392]	1456	! c_iso : mv here condensation of isotopes + redispatchage en precip
	1457
[4563]	1458	IF (iflag_evap_prec.GE.4) THEN
[4226]	1459	zrflcld(i) = zrflcld(i)+zqprecl(i) &
	1460	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
	1461	ziflcld(i) = ziflcld(i)+ zqpreci(i) &
	1462	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
	1463	znebprecipcld(i) = rneb(i,k)
	1464	zrfl(i) = zrflcld(i) + zrflclr(i)
	1465	zifl(i) = ziflcld(i) + ziflclr(i)
	1466	ELSE
[3999]	1467	zrfl(i) = zrfl(i)+ zqprecl(i) &
	1468	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
	1469	zifl(i) = zifl(i)+ zqpreci(i) &
[4226]	1470	(paprs(i,k)-paprs(i,k+1))/(RGdtime)
[3999]	1471	ENDIF
[4392]	1472	! c_iso : same for isotopes
[3999]	1473
	1474	ENDIF ! rneb>0
	1475
	1476	ENDDO
	1477
[4226]	1478	! LTP: limit of surface cloud fraction covered by precipitation when the local intensity of the flux is below rain_int_min
[4563]	1479	! if iflag_evap_prec>=4
	1480	IF (iflag_evap_prec.GE.4) THEN
[4114]	1481
[4226]	1482	DO i=1,klon
[4114]	1483
[4226]	1484	IF ((zrflclr(i) + ziflclr(i)) .GT. 0. ) THEN
[3999]	1485	znebprecipclr(i) = min(znebprecipclr(i),max(zrflclr(i)/ &
	1486	(MAX(znebprecipclr(i),seuil_neb)rain_int_min), ziflclr(i)/(MAX(znebprecipclr(i),seuil_neb)rain_int_min)))
	1487	ELSE
[4226]	1488	znebprecipclr(i)=0.0
	1489	ENDIF
	1490
	1491	IF ((zrflcld(i) + ziflcld(i)) .GT. 0.) THEN
[3999]	1492	znebprecipcld(i) = min(znebprecipcld(i), max(zrflcld(i)/ &
	1493	(MAX(znebprecipcld(i),seuil_neb)rain_int_min), ziflcld(i)/(MAX(znebprecipcld(i),seuil_neb)rain_int_min)))
[4226]	1494	ELSE
	1495	znebprecipcld(i)=0.0
	1496	ENDIF
	1497	ENDDO
[3999]	1498
[4226]	1499	ENDIF
[3999]	1500
[4910]	1501
[4803]	1502	ENDIF ! ok_poprecip
	1503
[3999]	1504	! End of precipitation formation
	1505	! --------------------------------
	1506
	1507
[4803]	1508	! Calculation of cloud condensates amount seen by radiative scheme
	1509	!-----------------------------------------------------------------
	1510
[4114]	1511	! Calculation of the concentration of condensates seen by the radiation scheme
[4412]	1512	! for liquid phase, we take radocondl
	1513	! for ice phase, we take radocondi if we neglect snowfall, otherwise (ok_radocond_snow=true)
[4803]	1514	! we recalculate radocondi to account for contributions from the precipitation flux
	1515	! TODO: for the moment, we deactivate this option when ok_poprecip=.true.
[3999]	1516
[4803]	1517	IF ((ok_radocond_snow) .AND. (k .LT. klev) .AND. (.NOT. ok_poprecip)) THEN
[4114]	1518	! for the solid phase (crystals + snowflakes)
[4412]	1519	! we recalculate radocondi by summing
[4114]	1520	! the ice content calculated in the mesh
	1521	! + the contribution of the non-evaporated snowfall
	1522	! from the overlying layer
	1523	DO i=1,klon
	1524	IF (ziflprev(i) .NE. 0.0) THEN
[4412]	1525	radocondi(i,k)=zoliq(i)*zfice(i)+zqpreci(i)+ziflprev(i)/zrho(i,k+1)/velo(i,k+1)
[4114]	1526	ELSE
[4412]	1527	radocondi(i,k)=zoliq(i)*zfice(i)+zqpreci(i)
[4114]	1528	ENDIF
[4412]	1529	radocond(i,k)=radocondl(i,k)+radocondi(i,k)
[4114]	1530	ENDDO
	1531	ENDIF
	1532
[4412]	1533	! caculate the percentage of ice in "radocond" so cloud+precip seen by the radiation scheme
[4114]	1534	DO i=1,klon
[4412]	1535	IF (radocond(i,k) .GT. 0.) THEN
	1536	radicefrac(i,k)=MIN(MAX(radocondi(i,k)/radocond(i,k),0.),1.)
[4114]	1537	ENDIF
	1538	ENDDO
	1539
[3999]	1540	! ----------------------------------------------------------------
	1541	! P4> Wet scavenging
	1542	! ----------------------------------------------------------------
	1543
	1544	!Scavenging through nucleation in the layer
	1545
	1546	DO i = 1,klon
	1547
	1548	IF(zcond(i).GT.zoliq(i)+1.e-10) THEN
	1549	beta(i,k) = (zcond(i)-zoliq(i))/zcond(i)/dtime
	1550	ELSE
	1551	beta(i,k) = 0.
	1552	ENDIF
	1553
[4059]	1554	zprec_cond(i) = MAX(zcond(i)-zoliq(i),0.0)*(paprs(i,k)-paprs(i,k+1))/RG
[3999]	1555
	1556	IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN
	1557
[4654]	1558	IF (temp(i,k) .GE. t_glace_min) THEN
[3999]	1559	zalpha_tr = a_tr_sca(3)
	1560	ELSE
	1561	zalpha_tr = a_tr_sca(4)
	1562	ENDIF
	1563
	1564	zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i))
	1565	frac_nucl(i,k)= 1.-zneb(i)*zfrac_lessi
[4226]	1566
[3999]	1567	! Nucleation with a factor of -1 instead of -0.5
	1568	zfrac_lessi = 1. - EXP(-zprec_cond(i)/zneb(i))
	1569
	1570	ENDIF
	1571
[4226]	1572	ENDDO
	1573
[3999]	1574	! Scavenging through impaction in the underlying layer
	1575
	1576	DO kk = k-1, 1, -1
	1577
	1578	DO i = 1, klon
	1579
	1580	IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN
	1581
[4654]	1582	IF (temp(i,kk) .GE. t_glace_min) THEN
[3999]	1583	zalpha_tr = a_tr_sca(1)
	1584	ELSE
	1585	zalpha_tr = a_tr_sca(2)
	1586	ENDIF
	1587
	1588	zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i))
	1589	frac_impa(i,kk)= 1.-zneb(i)*zfrac_lessi
	1590
	1591	ENDIF
	1592
	1593	ENDDO
	1594
	1595	ENDDO
[4226]	1596
[4803]	1597	! Outputs:
	1598	!-------------------------------
	1599	! Precipitation fluxes at layer interfaces
	1600	! + precipitation fractions +
	1601	! temperature and water species tendencies
	1602	DO i = 1, klon
	1603	psfl(i,k)=zifl(i)
	1604	prfl(i,k)=zrfl(i)
	1605	pfraclr(i,k)=znebprecipclr(i)
	1606	pfracld(i,k)=znebprecipcld(i)
	1607	d_ql(i,k) = (1-zfice(i))*zoliq(i)
	1608	d_qi(i,k) = zfice(i)*zoliq(i)
	1609	d_q(i,k) = zq(i) - qt(i,k)
	1610	! c_iso: same for isotopes
	1611	d_t(i,k) = zt(i) - temp(i,k)
	1612	ENDDO
	1613
	1614
[4226]	1615	ENDDO
[4059]	1616
[3999]	1617
	1618	! Rain or snow at the surface (depending on the first layer temperature)
	1619	DO i = 1, klon
	1620	snow(i) = zifl(i)
	1621	rain(i) = zrfl(i)
[4392]	1622	! c_iso final output
[3999]	1623	ENDDO
	1624
	1625	IF (ncoreczq>0) THEN
	1626	WRITE(lunout,*)'WARNING : ZQ in LSCP ',ncoreczq,' val < 1.e-15.'
	1627	ENDIF
	1628
[4654]	1629
	1630	RETURN
	1631
[4380]	1632	END SUBROUTINE lscp
[3999]	1633	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	1634
[4664]	1635	END MODULE lmdz_lscp

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