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sbcrnf.F90 in branches/2015/dev_r5218_CNRS17_coupling/NEMOGCM/NEMO/OPA_SRC/SBC – NEMO

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source: branches/2015/dev_r5218_CNRS17_coupling/NEMOGCM/NEMO/OPA_SRC/SBC/sbcrnf.F90 @ 5381

Last change on this file since 5381 was 5381, checked in by smasson, 9 years ago
dev_r5218_CNRS17_coupling: continue...
Property svn:keywords set to `Id`
File size: 27.2 KB

Rev	Line
[888]	1	MODULE sbcrnf
	2	!!======================================================================
	3	!! * MODULE sbcrnf *
	4	!! Ocean forcing: river runoff
	5	!!=====================================================================
[2528]	6	!! History : OPA ! 2000-11 (R. Hordoir, E. Durand) NetCDF FORMAT
	7	!! NEMO 1.0 ! 2002-09 (G. Madec) F90: Free form and module
[3764]	8	!! 3.0 ! 2006-07 (G. Madec) Surface module
[2528]	9	!! 3.2 ! 2009-04 (B. Lemaire) Introduce iom_put
	10	!! 3.3 ! 2010-10 (R. Furner, G. Madec) runoff distributed over ocean levels
[888]	11	!!----------------------------------------------------------------------
	12
	13	!!----------------------------------------------------------------------
	14	!! sbc_rnf : monthly runoffs read in a NetCDF file
[1116]	15	!! sbc_rnf_init : runoffs initialisation
[888]	16	!! rnf_mouth : set river mouth mask
	17	!!----------------------------------------------------------------------
	18	USE dom_oce ! ocean space and time domain
	19	USE phycst ! physical constants
	20	USE sbc_oce ! surface boundary condition variables
[4990]	21	USE sbcisf ! PM we could remove it I think
[2715]	22	USE closea ! closed seas
[2528]	23	USE fldread ! read input field at current time step
[888]	24	USE in_out_manager ! I/O manager
	25	USE iom ! I/O module
[2715]	26	USE lib_mpp ! MPP library
[4990]	27	USE eosbn2
	28	USE wrk_nemo ! Memory allocation
[888]	29
	30	IMPLICIT NONE
	31	PRIVATE
	32
[2528]	33	PUBLIC sbc_rnf ! routine call in sbcmod module
	34	PUBLIC sbc_rnf_div ! routine called in sshwzv module
[2715]	35	PUBLIC sbc_rnf_alloc ! routine call in sbcmod module
[3764]	36	PUBLIC sbc_rnf_init ! (PUBLIC for TAM)
[2715]	37	! !!* namsbc_rnf namelist *
[4147]	38	CHARACTER(len=100), PUBLIC :: cn_dir !: Root directory for location of ssr files
	39	LOGICAL , PUBLIC :: ln_rnf_depth !: depth river runoffs attribute specified in a file
	40	LOGICAL , PUBLIC :: ln_rnf_tem !: temperature river runoffs attribute specified in a file
	41	LOGICAL , PUBLIC :: ln_rnf_sal !: salinity river runoffs attribute specified in a file
	42	LOGICAL , PUBLIC :: ln_rnf_emp !: runoffs into a file to be read or already into precipitation
	43	TYPE(FLD_N) , PUBLIC :: sn_rnf !: information about the runoff file to be read
	44	TYPE(FLD_N) , PUBLIC :: sn_cnf !: information about the runoff mouth file to be read
	45	TYPE(FLD_N) :: sn_s_rnf !: information about the salinities of runoff file to be read
	46	TYPE(FLD_N) :: sn_t_rnf !: information about the temperatures of runoff file to be read
	47	TYPE(FLD_N) :: sn_dep_rnf !: information about the depth which river inflow affects
	48	LOGICAL , PUBLIC :: ln_rnf_mouth !: specific treatment in mouths vicinity
	49	REAL(wp) , PUBLIC :: rn_hrnf !: runoffs, depth over which enhanced vertical mixing is used
	50	REAL(wp) , PUBLIC :: rn_avt_rnf !: runoffs, value of the additional vertical mixing coef. [m2/s]
	51	REAL(wp) , PUBLIC :: rn_rfact !: multiplicative factor for runoff
[888]	52
[5381]	53	LOGICAL , PUBLIC :: l_rnfcpl = .false. ! runoffs recieved from oasis
	54
[2715]	55	INTEGER , PUBLIC :: nkrnf = 0 !: nb of levels over which Kz is increased at river mouths
	56	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rnfmsk !: river mouth mask (hori.)
	57	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: rnfmsk_z !: river mouth mask (vert.)
	58	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: h_rnf !: depth of runoff in m
	59	INTEGER, PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: nk_rnf !: depth of runoff in model levels
[3764]	60	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: rnf_tsc_b, rnf_tsc !: before and now T & S runoff contents [K.m/s & PSU.m/s]
[888]	61
[3680]	62	TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_rnf ! structure: river runoff (file information, fields read)
	63	TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_s_rnf ! structure: river runoff salinity (file information, fields read)
	64	TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_t_rnf ! structure: river runoff temperature (file information, fields read)
[2528]	65
	66	!! * Substitutions
	67	# include "domzgr_substitute.h90"
[888]	68	!!----------------------------------------------------------------------
[2528]	69	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
[1146]	70	!! $Id$
[2528]	71	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[888]	72	!!----------------------------------------------------------------------
	73	CONTAINS
	74
[2715]	75	INTEGER FUNCTION sbc_rnf_alloc()
	76	!!----------------------------------------------------------------------
	77	!! * ROUTINE sbc_rnf_alloc *
	78	!!----------------------------------------------------------------------
	79	ALLOCATE( rnfmsk(jpi,jpj) , rnfmsk_z(jpk) , &
	80	& h_rnf (jpi,jpj) , nk_rnf (jpi,jpj) , &
	81	& rnf_tsc_b(jpi,jpj,jpts) , rnf_tsc (jpi,jpj,jpts) , STAT=sbc_rnf_alloc )
	82	!
	83	IF( lk_mpp ) CALL mpp_sum ( sbc_rnf_alloc )
	84	IF( sbc_rnf_alloc > 0 ) CALL ctl_warn('sbc_rnf_alloc: allocation of arrays failed')
	85	END FUNCTION sbc_rnf_alloc
	86
[3625]	87
[888]	88	SUBROUTINE sbc_rnf( kt )
	89	!!----------------------------------------------------------------------
	90	!! * ROUTINE sbc_rnf *
[3764]	91	!!
[888]	92	!! ** Purpose : Introduce a climatological run off forcing
	93	!!
[3764]	94	!! ** Method : Set each river mouth with a monthly climatology
[888]	95	!! provided from different data.
	96	!! CAUTION : upward water flux, runoff forced to be < 0
	97	!!
	98	!! ** Action : runoff updated runoff field at time-step kt
	99	!!----------------------------------------------------------------------
	100	INTEGER, INTENT(in) :: kt ! ocean time step
[3625]	101	!
[3832]	102	INTEGER :: ji, jj ! dummy loop indices
	103	INTEGER :: z_err = 0 ! dummy integer for error handling
[888]	104	!!----------------------------------------------------------------------
[4990]	105	REAL(wp), DIMENSION(:,:), POINTER :: ztfrz ! freezing point used for temperature correction
[3764]	106	!
[4990]	107	CALL wrk_alloc( jpi,jpj, ztfrz)
	108
	109	!
[2528]	110	IF( kt == nit000 ) CALL sbc_rnf_init ! Read namelist and allocate structures
	111
	112	! ! ---------------------------------------- !
	113	IF( kt /= nit000 ) THEN ! Swap of forcing fields !
	114	! ! ---------------------------------------- !
	115	rnf_b (:,: ) = rnf (:,: ) ! Swap the ocean forcing fields except at nit000
	116	rnf_tsc_b(:,:,:) = rnf_tsc(:,:,:) ! where before fields are set at the end of the routine
	117	!
[1242]	118	ENDIF
[888]	119
	120	! !-------------------!
[1116]	121	IF( .NOT. ln_rnf_emp ) THEN ! Update runoff !
[888]	122	! !-------------------!
	123	!
[5381]	124	IF( .NOT. l_rnfcpl ) CALL fld_read ( kt, nn_fsbc, sf_rnf ) ! Read Runoffs data and provide it at kt
	125	IF( ln_rnf_tem ) CALL fld_read ( kt, nn_fsbc, sf_t_rnf ) ! idem for runoffs temperature if required
	126	IF( ln_rnf_sal ) CALL fld_read ( kt, nn_fsbc, sf_s_rnf ) ! idem for runoffs salinity if required
[2528]	127	!
[888]	128	! Runoff reduction only associated to the ORCA2_LIM configuration
	129	! when reading the NetCDF file runoff_1m_nomask.nc
[5381]	130	IF( cp_cfg == 'orca' .AND. jp_cfg == 2 .AND. .NOT. l_rnfcpl ) THEN
[2528]	131	WHERE( 40._wp < gphit(:,:) .AND. gphit(:,:) < 65._wp )
	132	sf_rnf(1)%fnow(:,:,1) = 0.85 * sf_rnf(1)%fnow(:,:,1)
	133	END WHERE
	134	ENDIF
	135	!
	136	IF( MOD( kt - 1, nn_fsbc ) == 0 ) THEN
	137	!
[5381]	138	IF( .NOT. l_rnfcpl ) rnf(:,:) = rn_rfact * ( sf_rnf(1)%fnow(:,:,1) ) ! updated runoff value at time step kt
[3625]	139	!
[2528]	140	! ! set temperature & salinity content of runoffs
	141	IF( ln_rnf_tem ) THEN ! use runoffs temperature data
	142	rnf_tsc(:,:,jp_tem) = ( sf_t_rnf(1)%fnow(:,:,1) ) * rnf(:,:) * r1_rau0
[3811]	143	WHERE( sf_t_rnf(1)%fnow(:,:,1) == -999._wp ) ! if missing data value use SST as runoffs temperature
[2528]	144	rnf_tsc(:,:,jp_tem) = sst_m(:,:) * rnf(:,:) * r1_rau0
	145	END WHERE
[4990]	146	WHERE( sf_t_rnf(1)%fnow(:,:,1) == -222._wp ) ! where fwf comes from melting of ice shelves or iceberg
	147	ztfrz(:,:) = -1.9 !tfreez( sss_m(:,:) ) !PM to be discuss (trouble if sensitivity study)
	148	rnf_tsc(:,:,jp_tem) = ztfrz(:,:) * rnf(:,:) * r1_rau0 - rnf(:,:) * lfusisf * r1_rau0_rcp
	149	END WHERE
[2528]	150	ELSE ! use SST as runoffs temperature
	151	rnf_tsc(:,:,jp_tem) = sst_m(:,:) * rnf(:,:) * r1_rau0
[3764]	152	ENDIF
	153	! ! use runoffs salinity data
[2528]	154	IF( ln_rnf_sal ) rnf_tsc(:,:,jp_sal) = ( sf_s_rnf(1)%fnow(:,:,1) ) * rnf(:,:) * r1_rau0
	155	! ! else use S=0 for runoffs (done one for all in the init)
	156	CALL iom_put( "runoffs", rnf ) ! output runoffs arrays
	157	ENDIF
	158	!
	159	ENDIF
	160	!
[5381]	161	! ! ---------------------------------------- !
[2528]	162	IF( kt == nit000 ) THEN ! set the forcing field at nit000 - 1 !
	163	! ! ---------------------------------------- !
	164	IF( ln_rstart .AND. & !* Restart: read in restart file
[3764]	165	& iom_varid( numror, 'rnf_b', ldstop = .FALSE. ) > 0 ) THEN
[2528]	166	IF(lwp) WRITE(numout,*) ' nit000-1 runoff forcing fields red in the restart file'
	167	CALL iom_get( numror, jpdom_autoglo, 'rnf_b', rnf_b ) ! before runoff
	168	CALL iom_get( numror, jpdom_autoglo, 'rnf_hc_b', rnf_tsc_b(:,:,jp_tem) ) ! before heat content of runoff
	169	CALL iom_get( numror, jpdom_autoglo, 'rnf_sc_b', rnf_tsc_b(:,:,jp_sal) ) ! before salinity content of runoff
	170	ELSE !* no restart: set from nit000 values
	171	IF(lwp) WRITE(numout,*) ' nit000-1 runoff forcing fields set to nit000'
[3764]	172	rnf_b (:,: ) = rnf (:,: )
	173	rnf_tsc_b(:,:,:) = rnf_tsc(:,:,:)
[2528]	174	ENDIF
	175	ENDIF
	176	! ! ---------------------------------------- !
	177	IF( lrst_oce ) THEN ! Write in the ocean restart file !
	178	! ! ---------------------------------------- !
	179	IF(lwp) WRITE(numout,*)
	180	IF(lwp) WRITE(numout,*) 'sbcrnf : runoff forcing fields written in ocean restart file ', &
	181	& 'at it= ', kt,' date= ', ndastp
	182	IF(lwp) WRITE(numout,*) '~~~~'
	183	CALL iom_rstput( kt, nitrst, numrow, 'rnf_b' , rnf )
	184	CALL iom_rstput( kt, nitrst, numrow, 'rnf_hc_b', rnf_tsc(:,:,jp_tem) )
	185	CALL iom_rstput( kt, nitrst, numrow, 'rnf_sc_b', rnf_tsc(:,:,jp_sal) )
	186	ENDIF
[4990]	187	CALL wrk_dealloc( jpi,jpj, ztfrz)
[2528]	188	!
	189	END SUBROUTINE sbc_rnf
	190
	191
	192	SUBROUTINE sbc_rnf_div( phdivn )
	193	!!----------------------------------------------------------------------
	194	!! * ROUTINE sbc_rnf *
[3764]	195	!!
[2528]	196	!! ** Purpose : update the horizontal divergence with the runoff inflow
	197	!!
[3764]	198	!! ** Method :
	199	!! CAUTION : rnf is positive (inflow) decreasing the
[2528]	200	!! divergence and expressed in m/s
	201	!!
	202	!! ** Action : phdivn decreased by the runoff inflow
	203	!!----------------------------------------------------------------------
[2715]	204	REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: phdivn ! horizontal divergence
[2528]	205	!!
	206	INTEGER :: ji, jj, jk ! dummy loop indices
	207	REAL(wp) :: zfact ! local scalar
	208	!!----------------------------------------------------------------------
	209	!
	210	zfact = 0.5_wp
	211	!
	212	IF( ln_rnf_depth ) THEN !== runoff distributed over several levels ==!
[3764]	213	IF( lk_vvl ) THEN ! variable volume case
[2528]	214	DO jj = 1, jpj ! update the depth over which runoffs are distributed
	215	DO ji = 1, jpi
[3764]	216	h_rnf(ji,jj) = 0._wp
[2528]	217	DO jk = 1, nk_rnf(ji,jj) ! recalculates h_rnf to be the depth in metres
[3764]	218	h_rnf(ji,jj) = h_rnf(ji,jj) + fse3t(ji,jj,jk) ! to the bottom of the relevant grid box
	219	END DO
[2528]	220	! ! apply the runoff input flow
	221	DO jk = 1, nk_rnf(ji,jj)
	222	phdivn(ji,jj,jk) = phdivn(ji,jj,jk) - ( rnf(ji,jj) + rnf_b(ji,jj) ) * zfact * r1_rau0 / h_rnf(ji,jj)
	223	END DO
	224	END DO
	225	END DO
	226	ELSE ! constant volume case : just apply the runoff input flow
[888]	227	DO jj = 1, jpj
	228	DO ji = 1, jpi
[2528]	229	DO jk = 1, nk_rnf(ji,jj)
	230	phdivn(ji,jj,jk) = phdivn(ji,jj,jk) - ( rnf(ji,jj) + rnf_b(ji,jj) ) * zfact * r1_rau0 / h_rnf(ji,jj)
	231	END DO
[888]	232	END DO
	233	END DO
	234	ENDIF
[2528]	235	ELSE !== runoff put only at the surface ==!
	236	IF( lk_vvl ) THEN ! variable volume case
	237	h_rnf(:,:) = fse3t(:,:,1) ! recalculate h_rnf to be depth of top box
[1303]	238	ENDIF
[2528]	239	phdivn(:,:,1) = phdivn(:,:,1) - ( rnf(:,:) + rnf_b(:,:) ) * zfact * r1_rau0 / fse3t(:,:,1)
[888]	240	ENDIF
	241	!
[2528]	242	END SUBROUTINE sbc_rnf_div
[888]	243
	244
[2528]	245	SUBROUTINE sbc_rnf_init
[1116]	246	!!----------------------------------------------------------------------
	247	!! * ROUTINE sbc_rnf_init *
	248	!!
	249	!! ** Purpose : Initialisation of the runoffs if (ln_rnf=T)
	250	!!
	251	!! ** Method : - read the runoff namsbc_rnf namelist
	252	!!
	253	!! ** Action : - read parameters
	254	!!----------------------------------------------------------------------
[3764]	255	CHARACTER(len=32) :: rn_dep_file ! runoff file name
[2528]	256	INTEGER :: ji, jj, jk ! dummy loop indices
	257	INTEGER :: ierror, inum ! temporary integer
[4147]	258	INTEGER :: ios ! Local integer output status for namelist read
[3625]	259	!
[2528]	260	NAMELIST/namsbc_rnf/ cn_dir, ln_rnf_emp, ln_rnf_depth, ln_rnf_tem, ln_rnf_sal, &
[3764]	261	& sn_rnf, sn_cnf , sn_s_rnf , sn_t_rnf , sn_dep_rnf, &
	262	& ln_rnf_mouth , rn_hrnf , rn_avt_rnf, rn_rfact
[1116]	263	!!----------------------------------------------------------------------
[3625]	264	!
[1116]	265	! ! ============
	266	! ! Namelist
	267	! ! ============
[4147]	268	!
	269	REWIND( numnam_ref ) ! Namelist namsbc_rnf in reference namelist : Runoffs
	270	READ ( numnam_ref, namsbc_rnf, IOSTAT = ios, ERR = 901)
	271	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_rnf in reference namelist', lwp )
[1116]	272
[4147]	273	REWIND( numnam_cfg ) ! Namelist namsbc_rnf in configuration namelist : Runoffs
	274	READ ( numnam_cfg, namsbc_rnf, IOSTAT = ios, ERR = 902 )
	275	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_rnf in configuration namelist', lwp )
[4624]	276	IF(lwm) WRITE ( numond, namsbc_rnf )
[1116]	277	!
	278	! ! Control print
	279	IF(lwp) THEN
	280	WRITE(numout,*)
	281	WRITE(numout,*) 'sbc_rnf : runoff '
	282	WRITE(numout,*) '~~~~~~~ '
	283	WRITE(numout,*) ' Namelist namsbc_rnf'
	284	WRITE(numout,*) ' runoff in a file to be read ln_rnf_emp = ', ln_rnf_emp
	285	WRITE(numout,*) ' specific river mouths treatment ln_rnf_mouth = ', ln_rnf_mouth
	286	WRITE(numout,*) ' river mouth additional Kz rn_avt_rnf = ', rn_avt_rnf
	287	WRITE(numout,*) ' depth of river mouth additional mixing rn_hrnf = ', rn_hrnf
[3764]	288	WRITE(numout,*) ' multiplicative factor for runoff rn_rfact = ', rn_rfact
[1116]	289	ENDIF
[3625]	290	!
[5381]	291	IF( ln_rnf_emp .AND. nn_components == jp_iam_opa ) THEN
	292	CALL ctl_stop( 'sbc_rnf_init: ln_rnf_emp must be false in case of SAS-OPA coupling' ) ; RETURN
	293	ENDIF
[1116]	294	! ! ==================
	295	! ! Type of runoff
	296	! ! ==================
[2715]	297	! !== allocate runoff arrays
	298	IF( sbc_rnf_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'sbc_rnf_alloc : unable to allocate arrays' )
[1116]	299	!
[2528]	300	IF( ln_rnf_emp ) THEN !== runoffs directly provided in the precipitations ==!
[1116]	301	IF(lwp) WRITE(numout,*)
	302	IF(lwp) WRITE(numout,*) ' runoffs directly provided in the precipitations'
[2528]	303	IF( ln_rnf_depth .OR. ln_rnf_tem .OR. ln_rnf_sal ) THEN
[3764]	304	CALL ctl_warn( 'runoffs already included in precipitations, so runoff (T,S, depth) attributes will not be used' )
[2528]	305	ln_rnf_depth = .FALSE. ; ln_rnf_tem = .FALSE. ; ln_rnf_sal = .FALSE.
	306	ENDIF
[1116]	307	!
[2528]	308	ELSE !== runoffs read in a file : set sf_rnf structure ==!
[1116]	309	!
[5381]	310	IF( .NOT. l_rnfcpl ) THEN
	311	ALLOCATE( sf_rnf(1), STAT=ierror ) ! Create (if required) sf_rnf structure (runoff inflow)
	312	IF(lwp) WRITE(numout,*)
	313	IF(lwp) WRITE(numout,*) ' runoffs inflow read in a file'
	314	IF( ierror > 0 ) THEN
	315	CALL ctl_stop( 'sbc_rnf: unable to allocate sf_rnf structure' ) ; RETURN
	316	ENDIF
	317	ALLOCATE( sf_rnf(1)%fnow(jpi,jpj,1) )
	318	IF( sn_rnf%ln_tint ) ALLOCATE( sf_rnf(1)%fdta(jpi,jpj,1,2) )
	319	CALL fld_fill( sf_rnf, (/ sn_rnf /), cn_dir, 'sbc_rnf_init', 'read runoffs data', 'namsbc_rnf' )
[2528]	320	ENDIF
[1116]	321	!
[2528]	322	IF( ln_rnf_tem ) THEN ! Create (if required) sf_t_rnf structure
	323	IF(lwp) WRITE(numout,*)
	324	IF(lwp) WRITE(numout,*) ' runoffs temperatures read in a file'
	325	ALLOCATE( sf_t_rnf(1), STAT=ierror )
	326	IF( ierror > 0 ) THEN
	327	CALL ctl_stop( 'sbc_rnf_init: unable to allocate sf_t_rnf structure' ) ; RETURN
	328	ENDIF
	329	ALLOCATE( sf_t_rnf(1)%fnow(jpi,jpj,1) )
	330	IF( sn_t_rnf%ln_tint ) ALLOCATE( sf_t_rnf(1)%fdta(jpi,jpj,1,2) )
[3764]	331	CALL fld_fill (sf_t_rnf, (/ sn_t_rnf /), cn_dir, 'sbc_rnf_init', 'read runoff temperature data', 'namsbc_rnf' )
[2528]	332	ENDIF
	333	!
	334	IF( ln_rnf_sal ) THEN ! Create (if required) sf_s_rnf and sf_t_rnf structures
	335	IF(lwp) WRITE(numout,*)
	336	IF(lwp) WRITE(numout,*) ' runoffs salinities read in a file'
	337	ALLOCATE( sf_s_rnf(1), STAT=ierror )
	338	IF( ierror > 0 ) THEN
	339	CALL ctl_stop( 'sbc_rnf_init: unable to allocate sf_s_rnf structure' ) ; RETURN
	340	ENDIF
	341	ALLOCATE( sf_s_rnf(1)%fnow(jpi,jpj,1) )
	342	IF( sn_s_rnf%ln_tint ) ALLOCATE( sf_s_rnf(1)%fdta(jpi,jpj,1,2) )
[3764]	343	CALL fld_fill (sf_s_rnf, (/ sn_s_rnf /), cn_dir, 'sbc_rnf_init', 'read runoff salinity data', 'namsbc_rnf' )
[2528]	344	ENDIF
	345	!
[3764]	346	IF( ln_rnf_depth ) THEN ! depth of runoffs set from a file
[2528]	347	IF(lwp) WRITE(numout,*)
	348	IF(lwp) WRITE(numout,*) ' runoffs depth read in a file'
[3764]	349	rn_dep_file = TRIM( cn_dir )//TRIM( sn_dep_rnf%clname )
[3832]	350	IF( .NOT. sn_dep_rnf%ln_clim ) THEN ; WRITE(rn_dep_file, '(a,"_y",i4)' ) TRIM( rn_dep_file ), nyear ! add year
	351	IF( sn_dep_rnf%cltype == 'monthly' ) WRITE(rn_dep_file, '(a,"m",i2)' ) TRIM( rn_dep_file ), nmonth ! add month
	352	ENDIF
[3764]	353	CALL iom_open ( rn_dep_file, inum ) ! open file
	354	CALL iom_get ( inum, jpdom_data, sn_dep_rnf%clvar, h_rnf ) ! read the river mouth array
	355	CALL iom_close( inum ) ! close file
[2528]	356	!
	357	nk_rnf(:,:) = 0 ! set the number of level over which river runoffs are applied
[3764]	358	DO jj = 1, jpj
	359	DO ji = 1, jpi
	360	IF( h_rnf(ji,jj) > 0._wp ) THEN
	361	jk = 2
[4368]	362	DO WHILE ( jk /= mbkt(ji,jj) .AND. gdept_0(ji,jj,jk) < h_rnf(ji,jj) ) ; jk = jk + 1 ; END DO
[3764]	363	nk_rnf(ji,jj) = jk
	364	ELSEIF( h_rnf(ji,jj) == -1._wp ) THEN ; nk_rnf(ji,jj) = 1
	365	ELSEIF( h_rnf(ji,jj) == -999._wp ) THEN ; nk_rnf(ji,jj) = mbkt(ji,jj)
	366	ELSE
[3832]	367	CALL ctl_stop( 'sbc_rnf_init: runoff depth not positive, and not -999 or -1, rnf value in file fort.999' )
	368	WRITE(999,*) 'ji, jj, h_rnf(ji,jj) :', ji, jj, h_rnf(ji,jj)
[3764]	369	ENDIF
	370	END DO
	371	END DO
	372	DO jj = 1, jpj ! set the associated depth
	373	DO ji = 1, jpi
[2528]	374	h_rnf(ji,jj) = 0._wp
[3764]	375	DO jk = 1, nk_rnf(ji,jj)
	376	h_rnf(ji,jj) = h_rnf(ji,jj) + fse3t(ji,jj,jk)
[2528]	377	END DO
	378	END DO
	379	END DO
[3764]	380	ELSE ! runoffs applied at the surface
	381	nk_rnf(:,:) = 1
[2528]	382	h_rnf (:,:) = fse3t(:,:,1)
[3764]	383	ENDIF
	384	!
[1116]	385	ENDIF
[2528]	386	!
[3294]	387	rnf(:,:) = 0._wp ! runoff initialisation
[2528]	388	rnf_tsc(:,:,:) = 0._wp ! runoffs temperature & salinty contents initilisation
	389	!
[1116]	390	! ! ========================
	391	! ! River mouth vicinity
	392	! ! ========================
	393	!
	394	IF( ln_rnf_mouth ) THEN ! Specific treatment in vicinity of river mouths :
	395	! ! - Increase Kz in surface layers ( rn_hrnf > 0 )
	396	! ! - set to zero SSS damping (ln_ssr=T)
	397	! ! - mixed upstream-centered (ln_traadv_cen2=T)
	398	!
[2528]	399	IF ( ln_rnf_depth ) CALL ctl_warn( 'sbc_rnf_init: increased mixing turned on but effects may already', &
[3764]	400	& 'be spread through depth by ln_rnf_depth' )
[2528]	401	!
	402	nkrnf = 0 ! Number of level over which Kz increase
	403	IF( rn_hrnf > 0._wp ) THEN
[1116]	404	nkrnf = 2
[4292]	405	DO WHILE( nkrnf /= jpkm1 .AND. gdepw_1d(nkrnf+1) < rn_hrnf ) ; nkrnf = nkrnf + 1 ; END DO
[3625]	406	IF( ln_sco ) CALL ctl_warn( 'sbc_rnf: number of levels over which Kz is increased is computed for zco...' )
[1116]	407	ENDIF
	408	IF(lwp) WRITE(numout,*)
	409	IF(lwp) WRITE(numout,*) ' Specific treatment used in vicinity of river mouths :'
	410	IF(lwp) WRITE(numout,*) ' - Increase Kz in surface layers (if rn_hrnf > 0 )'
	411	IF(lwp) WRITE(numout,*) ' by ', rn_avt_rnf,' m2/s over ', nkrnf, ' w-levels'
	412	IF(lwp) WRITE(numout,*) ' - set to zero SSS damping (if ln_ssr=T)'
	413	IF(lwp) WRITE(numout,*) ' - mixed upstream-centered (if ln_traadv_cen2=T)'
	414	!
	415	CALL rnf_mouth ! set river mouth mask
	416	!
	417	ELSE ! No treatment at river mouths
	418	IF(lwp) WRITE(numout,*)
	419	IF(lwp) WRITE(numout,*) ' No specific treatment at river mouths'
[3764]	420	rnfmsk (:,:) = 0._wp
[2528]	421	rnfmsk_z(:) = 0._wp
[1116]	422	nkrnf = 0
	423	ENDIF
[3625]	424	!
[1116]	425	END SUBROUTINE sbc_rnf_init
	426
	427
[888]	428	SUBROUTINE rnf_mouth
	429	!!----------------------------------------------------------------------
	430	!! * ROUTINE rnf_mouth *
[3764]	431	!!
[888]	432	!! ** Purpose : define the river mouths mask
	433	!!
	434	!! ** Method : read the river mouth mask (=0/1) in the river runoff
[3764]	435	!! climatological file. Defined a given vertical structure.
	436	!! CAUTION, the vertical structure is hard coded on the
[888]	437	!! first 5 levels.
	438	!! This fields can be used to:
[3764]	439	!! - set an upstream advection scheme
[1116]	440	!! (ln_rnf_mouth=T and ln_traadv_cen2=T)
[3764]	441	!! - increase vertical on the top nn_krnf vertical levels
[888]	442	!! at river runoff input grid point (nn_krnf>=2, see step.F90)
	443	!! - set to zero SSS restoring flux at river mouth grid points
	444	!!
	445	!! ** Action : rnfmsk set to 1 at river runoff input, 0 elsewhere
	446	!! rnfmsk_z vertical structure
	447	!!----------------------------------------------------------------------
[2784]	448	INTEGER :: inum ! temporary integers
	449	CHARACTER(len=140) :: cl_rnfile ! runoff file name
[888]	450	!!----------------------------------------------------------------------
[3764]	451	!
[888]	452	IF(lwp) WRITE(numout,*)
	453	IF(lwp) WRITE(numout,*) 'rnf_mouth : river mouth mask'
	454	IF(lwp) WRITE(numout,*) '~~~~~~~~~ '
[3625]	455	!
[1133]	456	cl_rnfile = TRIM( cn_dir )//TRIM( sn_cnf%clname )
	457	IF( .NOT. sn_cnf%ln_clim ) THEN ; WRITE(cl_rnfile, '(a,"_y",i4)' ) TRIM( cl_rnfile ), nyear ! add year
	458	IF( sn_cnf%cltype == 'monthly' ) WRITE(cl_rnfile, '(a,"m",i2)' ) TRIM( cl_rnfile ), nmonth ! add month
	459	ENDIF
[3625]	460	!
[888]	461	! horizontal mask (read in NetCDF file)
	462	CALL iom_open ( cl_rnfile, inum ) ! open file
	463	CALL iom_get ( inum, jpdom_data, sn_cnf%clvar, rnfmsk ) ! read the river mouth array
	464	CALL iom_close( inum ) ! close file
[3625]	465	!
[3632]	466	IF( nn_closea == 1 ) CALL clo_rnf( rnfmsk ) ! closed sea inflow set as ruver mouth
[3625]	467	!
[3764]	468	rnfmsk_z(:) = 0._wp ! vertical structure
[888]	469	rnfmsk_z(1) = 1.0
	470	rnfmsk_z(2) = 1.0 ! **********
	471	rnfmsk_z(3) = 0.5 ! HARD CODED on the 5 first levels
	472	rnfmsk_z(4) = 0.25 ! **********
	473	rnfmsk_z(5) = 0.125
[3764]	474	!
[888]	475	END SUBROUTINE rnf_mouth
[3764]	476
[888]	477	!!======================================================================
	478	END MODULE sbcrnf

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