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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 @ 5403

Last change on this file since 5403 was 5403, checked in by smasson, 9 years ago
dev_r5218_CNRS17_coupling: sette ok
Property svn:keywords set to `Id`
File size: 25.8 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
[5403]	34	PUBLIC sbc_rnf_div ! routine called in divcurl 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	TYPE(FLD_N) , PUBLIC :: sn_rnf !: information about the runoff file to be read
	43	TYPE(FLD_N) , PUBLIC :: sn_cnf !: information about the runoff mouth file to be read
	44	TYPE(FLD_N) :: sn_s_rnf !: information about the salinities of runoff file to be read
	45	TYPE(FLD_N) :: sn_t_rnf !: information about the temperatures of runoff file to be read
	46	TYPE(FLD_N) :: sn_dep_rnf !: information about the depth which river inflow affects
	47	LOGICAL , PUBLIC :: ln_rnf_mouth !: specific treatment in mouths vicinity
	48	REAL(wp) , PUBLIC :: rn_hrnf !: runoffs, depth over which enhanced vertical mixing is used
	49	REAL(wp) , PUBLIC :: rn_avt_rnf !: runoffs, value of the additional vertical mixing coef. [m2/s]
	50	REAL(wp) , PUBLIC :: rn_rfact !: multiplicative factor for runoff
[888]	51
[5381]	52	LOGICAL , PUBLIC :: l_rnfcpl = .false. ! runoffs recieved from oasis
	53
[2715]	54	INTEGER , PUBLIC :: nkrnf = 0 !: nb of levels over which Kz is increased at river mouths
	55	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rnfmsk !: river mouth mask (hori.)
	56	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: rnfmsk_z !: river mouth mask (vert.)
	57	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: h_rnf !: depth of runoff in m
	58	INTEGER, PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: nk_rnf !: depth of runoff in model levels
[3764]	59	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]	60
[3680]	61	TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_rnf ! structure: river runoff (file information, fields read)
	62	TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_s_rnf ! structure: river runoff salinity (file information, fields read)
	63	TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_t_rnf ! structure: river runoff temperature (file information, fields read)
[2528]	64
	65	!! * Substitutions
	66	# include "domzgr_substitute.h90"
[888]	67	!!----------------------------------------------------------------------
[2528]	68	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
[1146]	69	!! $Id$
[2528]	70	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[888]	71	!!----------------------------------------------------------------------
	72	CONTAINS
	73
[2715]	74	INTEGER FUNCTION sbc_rnf_alloc()
	75	!!----------------------------------------------------------------------
	76	!! * ROUTINE sbc_rnf_alloc *
	77	!!----------------------------------------------------------------------
	78	ALLOCATE( rnfmsk(jpi,jpj) , rnfmsk_z(jpk) , &
	79	& h_rnf (jpi,jpj) , nk_rnf (jpi,jpj) , &
	80	& rnf_tsc_b(jpi,jpj,jpts) , rnf_tsc (jpi,jpj,jpts) , STAT=sbc_rnf_alloc )
	81	!
	82	IF( lk_mpp ) CALL mpp_sum ( sbc_rnf_alloc )
	83	IF( sbc_rnf_alloc > 0 ) CALL ctl_warn('sbc_rnf_alloc: allocation of arrays failed')
	84	END FUNCTION sbc_rnf_alloc
	85
[3625]	86
[888]	87	SUBROUTINE sbc_rnf( kt )
	88	!!----------------------------------------------------------------------
	89	!! * ROUTINE sbc_rnf *
[3764]	90	!!
[888]	91	!! ** Purpose : Introduce a climatological run off forcing
	92	!!
[3764]	93	!! ** Method : Set each river mouth with a monthly climatology
[888]	94	!! provided from different data.
	95	!! CAUTION : upward water flux, runoff forced to be < 0
	96	!!
	97	!! ** Action : runoff updated runoff field at time-step kt
	98	!!----------------------------------------------------------------------
	99	INTEGER, INTENT(in) :: kt ! ocean time step
[3625]	100	!
[3832]	101	INTEGER :: ji, jj ! dummy loop indices
	102	INTEGER :: z_err = 0 ! dummy integer for error handling
[888]	103	!!----------------------------------------------------------------------
[4990]	104	REAL(wp), DIMENSION(:,:), POINTER :: ztfrz ! freezing point used for temperature correction
[3764]	105	!
[4990]	106	CALL wrk_alloc( jpi,jpj, ztfrz)
	107
	108	!
[2528]	109	IF( kt == nit000 ) CALL sbc_rnf_init ! Read namelist and allocate structures
	110
	111	! ! ---------------------------------------- !
	112	IF( kt /= nit000 ) THEN ! Swap of forcing fields !
	113	! ! ---------------------------------------- !
	114	rnf_b (:,: ) = rnf (:,: ) ! Swap the ocean forcing fields except at nit000
	115	rnf_tsc_b(:,:,:) = rnf_tsc(:,:,:) ! where before fields are set at the end of the routine
	116	!
[1242]	117	ENDIF
[888]	118
[5403]	119	! !-------------------!
	120	! ! Update runoff !
	121	! !-------------------!
	122	!
	123	IF( .NOT. l_rnfcpl ) CALL fld_read ( kt, nn_fsbc, sf_rnf ) ! Read Runoffs data and provide it at kt
	124	IF( ln_rnf_tem ) CALL fld_read ( kt, nn_fsbc, sf_t_rnf ) ! idem for runoffs temperature if required
	125	IF( ln_rnf_sal ) CALL fld_read ( kt, nn_fsbc, sf_s_rnf ) ! idem for runoffs salinity if required
	126	!
	127	! Runoff reduction only associated to the ORCA2_LIM configuration
	128	! when reading the NetCDF file runoff_1m_nomask.nc
	129	IF( cp_cfg == 'orca' .AND. jp_cfg == 2 .AND. .NOT. l_rnfcpl ) THEN
	130	WHERE( 40._wp < gphit(:,:) .AND. gphit(:,:) < 65._wp )
	131	sf_rnf(1)%fnow(:,:,1) = 0.85 * sf_rnf(1)%fnow(:,:,1)
	132	END WHERE
	133	ENDIF
	134	!
	135	IF( MOD( kt - 1, nn_fsbc ) == 0 ) THEN
[888]	136	!
[5403]	137	IF( .NOT. l_rnfcpl ) rnf(:,:) = rn_rfact * ( sf_rnf(1)%fnow(:,:,1) ) ! updated runoff value at time step kt
[2528]	138	!
[5403]	139	! ! set temperature & salinity content of runoffs
	140	IF( ln_rnf_tem ) THEN ! use runoffs temperature data
	141	rnf_tsc(:,:,jp_tem) = ( sf_t_rnf(1)%fnow(:,:,1) ) * rnf(:,:) * r1_rau0
	142	WHERE( sf_t_rnf(1)%fnow(:,:,1) == -999._wp ) ! if missing data value use SST as runoffs temperature
	143	rnf_tsc(:,:,jp_tem) = sst_m(:,:) * rnf(:,:) * r1_rau0
[2528]	144	END WHERE
[5403]	145	WHERE( sf_t_rnf(1)%fnow(:,:,1) == -222._wp ) ! where fwf comes from melting of ice shelves or iceberg
	146	ztfrz(:,:) = -1.9 !tfreez( sss_m(:,:) ) !PM to be discuss (trouble if sensitivity study)
	147	rnf_tsc(:,:,jp_tem) = ztfrz(:,:) * rnf(:,:) * r1_rau0 - rnf(:,:) * lfusisf * r1_rau0_rcp
	148	END WHERE
	149	ELSE ! use SST as runoffs temperature
	150	rnf_tsc(:,:,jp_tem) = sst_m(:,:) * rnf(:,:) * r1_rau0
[2528]	151	ENDIF
[5403]	152	! ! use runoffs salinity data
	153	IF( ln_rnf_sal ) rnf_tsc(:,:,jp_sal) = ( sf_s_rnf(1)%fnow(:,:,1) ) * rnf(:,:) * r1_rau0
	154	! ! else use S=0 for runoffs (done one for all in the init)
	155	CALL iom_put( "runoffs", rnf ) ! output runoffs arrays
[2528]	156	ENDIF
	157	!
[5381]	158	! ! ---------------------------------------- !
[2528]	159	IF( kt == nit000 ) THEN ! set the forcing field at nit000 - 1 !
	160	! ! ---------------------------------------- !
	161	IF( ln_rstart .AND. & !* Restart: read in restart file
[3764]	162	& iom_varid( numror, 'rnf_b', ldstop = .FALSE. ) > 0 ) THEN
[2528]	163	IF(lwp) WRITE(numout,*) ' nit000-1 runoff forcing fields red in the restart file'
	164	CALL iom_get( numror, jpdom_autoglo, 'rnf_b', rnf_b ) ! before runoff
	165	CALL iom_get( numror, jpdom_autoglo, 'rnf_hc_b', rnf_tsc_b(:,:,jp_tem) ) ! before heat content of runoff
	166	CALL iom_get( numror, jpdom_autoglo, 'rnf_sc_b', rnf_tsc_b(:,:,jp_sal) ) ! before salinity content of runoff
	167	ELSE !* no restart: set from nit000 values
	168	IF(lwp) WRITE(numout,*) ' nit000-1 runoff forcing fields set to nit000'
[5403]	169	rnf_b (:,: ) = rnf (:,: )
	170	rnf_tsc_b(:,:,:) = rnf_tsc(:,:,:)
[2528]	171	ENDIF
	172	ENDIF
	173	! ! ---------------------------------------- !
	174	IF( lrst_oce ) THEN ! Write in the ocean restart file !
	175	! ! ---------------------------------------- !
	176	IF(lwp) WRITE(numout,*)
	177	IF(lwp) WRITE(numout,*) 'sbcrnf : runoff forcing fields written in ocean restart file ', &
	178	& 'at it= ', kt,' date= ', ndastp
	179	IF(lwp) WRITE(numout,*) '~~~~'
	180	CALL iom_rstput( kt, nitrst, numrow, 'rnf_b' , rnf )
	181	CALL iom_rstput( kt, nitrst, numrow, 'rnf_hc_b', rnf_tsc(:,:,jp_tem) )
	182	CALL iom_rstput( kt, nitrst, numrow, 'rnf_sc_b', rnf_tsc(:,:,jp_sal) )
	183	ENDIF
[5403]	184	!
[4990]	185	CALL wrk_dealloc( jpi,jpj, ztfrz)
[2528]	186	!
	187	END SUBROUTINE sbc_rnf
	188
	189
	190	SUBROUTINE sbc_rnf_div( phdivn )
	191	!!----------------------------------------------------------------------
	192	!! * ROUTINE sbc_rnf *
[3764]	193	!!
[2528]	194	!! ** Purpose : update the horizontal divergence with the runoff inflow
	195	!!
[3764]	196	!! ** Method :
	197	!! CAUTION : rnf is positive (inflow) decreasing the
[2528]	198	!! divergence and expressed in m/s
	199	!!
	200	!! ** Action : phdivn decreased by the runoff inflow
	201	!!----------------------------------------------------------------------
[2715]	202	REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: phdivn ! horizontal divergence
[2528]	203	!!
	204	INTEGER :: ji, jj, jk ! dummy loop indices
	205	REAL(wp) :: zfact ! local scalar
	206	!!----------------------------------------------------------------------
	207	!
	208	zfact = 0.5_wp
	209	!
	210	IF( ln_rnf_depth ) THEN !== runoff distributed over several levels ==!
[3764]	211	IF( lk_vvl ) THEN ! variable volume case
[2528]	212	DO jj = 1, jpj ! update the depth over which runoffs are distributed
	213	DO ji = 1, jpi
[3764]	214	h_rnf(ji,jj) = 0._wp
[2528]	215	DO jk = 1, nk_rnf(ji,jj) ! recalculates h_rnf to be the depth in metres
[3764]	216	h_rnf(ji,jj) = h_rnf(ji,jj) + fse3t(ji,jj,jk) ! to the bottom of the relevant grid box
	217	END DO
[2528]	218	! ! apply the runoff input flow
	219	DO jk = 1, nk_rnf(ji,jj)
	220	phdivn(ji,jj,jk) = phdivn(ji,jj,jk) - ( rnf(ji,jj) + rnf_b(ji,jj) ) * zfact * r1_rau0 / h_rnf(ji,jj)
	221	END DO
	222	END DO
	223	END DO
	224	ELSE ! constant volume case : just apply the runoff input flow
[888]	225	DO jj = 1, jpj
	226	DO ji = 1, jpi
[2528]	227	DO jk = 1, nk_rnf(ji,jj)
	228	phdivn(ji,jj,jk) = phdivn(ji,jj,jk) - ( rnf(ji,jj) + rnf_b(ji,jj) ) * zfact * r1_rau0 / h_rnf(ji,jj)
	229	END DO
[888]	230	END DO
	231	END DO
	232	ENDIF
[2528]	233	ELSE !== runoff put only at the surface ==!
	234	IF( lk_vvl ) THEN ! variable volume case
	235	h_rnf(:,:) = fse3t(:,:,1) ! recalculate h_rnf to be depth of top box
[1303]	236	ENDIF
[2528]	237	phdivn(:,:,1) = phdivn(:,:,1) - ( rnf(:,:) + rnf_b(:,:) ) * zfact * r1_rau0 / fse3t(:,:,1)
[888]	238	ENDIF
	239	!
[2528]	240	END SUBROUTINE sbc_rnf_div
[888]	241
	242
[2528]	243	SUBROUTINE sbc_rnf_init
[1116]	244	!!----------------------------------------------------------------------
	245	!! * ROUTINE sbc_rnf_init *
	246	!!
	247	!! ** Purpose : Initialisation of the runoffs if (ln_rnf=T)
	248	!!
	249	!! ** Method : - read the runoff namsbc_rnf namelist
	250	!!
	251	!! ** Action : - read parameters
	252	!!----------------------------------------------------------------------
[3764]	253	CHARACTER(len=32) :: rn_dep_file ! runoff file name
[2528]	254	INTEGER :: ji, jj, jk ! dummy loop indices
	255	INTEGER :: ierror, inum ! temporary integer
[4147]	256	INTEGER :: ios ! Local integer output status for namelist read
[3625]	257	!
[5403]	258	NAMELIST/namsbc_rnf/ cn_dir , ln_rnf_depth, ln_rnf_tem, ln_rnf_sal, &
[3764]	259	& sn_rnf, sn_cnf , sn_s_rnf , sn_t_rnf , sn_dep_rnf, &
	260	& ln_rnf_mouth , rn_hrnf , rn_avt_rnf, rn_rfact
[1116]	261	!!----------------------------------------------------------------------
[3625]	262	!
[1116]	263	! ! ============
	264	! ! Namelist
	265	! ! ============
[4147]	266	!
	267	REWIND( numnam_ref ) ! Namelist namsbc_rnf in reference namelist : Runoffs
	268	READ ( numnam_ref, namsbc_rnf, IOSTAT = ios, ERR = 901)
	269	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_rnf in reference namelist', lwp )
[1116]	270
[4147]	271	REWIND( numnam_cfg ) ! Namelist namsbc_rnf in configuration namelist : Runoffs
	272	READ ( numnam_cfg, namsbc_rnf, IOSTAT = ios, ERR = 902 )
	273	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_rnf in configuration namelist', lwp )
[4624]	274	IF(lwm) WRITE ( numond, namsbc_rnf )
[1116]	275	!
	276	! ! Control print
	277	IF(lwp) THEN
	278	WRITE(numout,*)
	279	WRITE(numout,*) 'sbc_rnf : runoff '
	280	WRITE(numout,*) '~~~~~~~ '
	281	WRITE(numout,*) ' Namelist namsbc_rnf'
	282	WRITE(numout,*) ' specific river mouths treatment ln_rnf_mouth = ', ln_rnf_mouth
	283	WRITE(numout,*) ' river mouth additional Kz rn_avt_rnf = ', rn_avt_rnf
	284	WRITE(numout,*) ' depth of river mouth additional mixing rn_hrnf = ', rn_hrnf
[3764]	285	WRITE(numout,*) ' multiplicative factor for runoff rn_rfact = ', rn_rfact
[1116]	286	ENDIF
	287	! ! ==================
	288	! ! Type of runoff
	289	! ! ==================
[2715]	290	! !== allocate runoff arrays
	291	IF( sbc_rnf_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'sbc_rnf_alloc : unable to allocate arrays' )
[1116]	292	!
[5403]	293	IF( .NOT. l_rnfcpl ) THEN
	294	ALLOCATE( sf_rnf(1), STAT=ierror ) ! Create (if required) sf_rnf structure (runoff inflow)
[1116]	295	IF(lwp) WRITE(numout,*)
[5403]	296	IF(lwp) WRITE(numout,*) ' runoffs inflow read in a file'
	297	IF( ierror > 0 ) THEN
	298	CALL ctl_stop( 'sbc_rnf: unable to allocate sf_rnf structure' ) ; RETURN
[2528]	299	ENDIF
[5403]	300	ALLOCATE( sf_rnf(1)%fnow(jpi,jpj,1) )
	301	IF( sn_rnf%ln_tint ) ALLOCATE( sf_rnf(1)%fdta(jpi,jpj,1,2) )
	302	CALL fld_fill( sf_rnf, (/ sn_rnf /), cn_dir, 'sbc_rnf_init', 'read runoffs data', 'namsbc_rnf' )
	303	ENDIF
	304	!
	305	IF( ln_rnf_tem ) THEN ! Create (if required) sf_t_rnf structure
	306	IF(lwp) WRITE(numout,*)
	307	IF(lwp) WRITE(numout,*) ' runoffs temperatures read in a file'
	308	ALLOCATE( sf_t_rnf(1), STAT=ierror )
	309	IF( ierror > 0 ) THEN
	310	CALL ctl_stop( 'sbc_rnf_init: unable to allocate sf_t_rnf structure' ) ; RETURN
[2528]	311	ENDIF
[5403]	312	ALLOCATE( sf_t_rnf(1)%fnow(jpi,jpj,1) )
	313	IF( sn_t_rnf%ln_tint ) ALLOCATE( sf_t_rnf(1)%fdta(jpi,jpj,1,2) )
	314	CALL fld_fill (sf_t_rnf, (/ sn_t_rnf /), cn_dir, 'sbc_rnf_init', 'read runoff temperature data', 'namsbc_rnf' )
	315	ENDIF
	316	!
	317	IF( ln_rnf_sal ) THEN ! Create (if required) sf_s_rnf and sf_t_rnf structures
	318	IF(lwp) WRITE(numout,*)
	319	IF(lwp) WRITE(numout,*) ' runoffs salinities read in a file'
	320	ALLOCATE( sf_s_rnf(1), STAT=ierror )
	321	IF( ierror > 0 ) THEN
	322	CALL ctl_stop( 'sbc_rnf_init: unable to allocate sf_s_rnf structure' ) ; RETURN
[2528]	323	ENDIF
[5403]	324	ALLOCATE( sf_s_rnf(1)%fnow(jpi,jpj,1) )
	325	IF( sn_s_rnf%ln_tint ) ALLOCATE( sf_s_rnf(1)%fdta(jpi,jpj,1,2) )
	326	CALL fld_fill (sf_s_rnf, (/ sn_s_rnf /), cn_dir, 'sbc_rnf_init', 'read runoff salinity data', 'namsbc_rnf' )
	327	ENDIF
	328	!
	329	IF( ln_rnf_depth ) THEN ! depth of runoffs set from a file
	330	IF(lwp) WRITE(numout,*)
	331	IF(lwp) WRITE(numout,*) ' runoffs depth read in a file'
	332	rn_dep_file = TRIM( cn_dir )//TRIM( sn_dep_rnf%clname )
	333	IF( .NOT. sn_dep_rnf%ln_clim ) THEN ; WRITE(rn_dep_file, '(a,"_y",i4)' ) TRIM( rn_dep_file ), nyear ! add year
	334	IF( sn_dep_rnf%cltype == 'monthly' ) WRITE(rn_dep_file, '(a,"m",i2)' ) TRIM( rn_dep_file ), nmonth ! add month
[2528]	335	ENDIF
[5403]	336	CALL iom_open ( rn_dep_file, inum ) ! open file
	337	CALL iom_get ( inum, jpdom_data, sn_dep_rnf%clvar, h_rnf ) ! read the river mouth array
	338	CALL iom_close( inum ) ! close file
[2528]	339	!
[5403]	340	nk_rnf(:,:) = 0 ! set the number of level over which river runoffs are applied
	341	DO jj = 1, jpj
	342	DO ji = 1, jpi
	343	IF( h_rnf(ji,jj) > 0._wp ) THEN
	344	jk = 2
	345	DO WHILE ( jk /= mbkt(ji,jj) .AND. gdept_0(ji,jj,jk) < h_rnf(ji,jj) ) ; jk = jk + 1
	346	END DO
	347	nk_rnf(ji,jj) = jk
	348	ELSEIF( h_rnf(ji,jj) == -1._wp ) THEN ; nk_rnf(ji,jj) = 1
	349	ELSEIF( h_rnf(ji,jj) == -999._wp ) THEN ; nk_rnf(ji,jj) = mbkt(ji,jj)
	350	ELSE
	351	CALL ctl_stop( 'sbc_rnf_init: runoff depth not positive, and not -999 or -1, rnf value in file fort.999' )
	352	WRITE(999,*) 'ji, jj, h_rnf(ji,jj) :', ji, jj, h_rnf(ji,jj)
	353	ENDIF
[3764]	354	END DO
[5403]	355	END DO
	356	DO jj = 1, jpj ! set the associated depth
	357	DO ji = 1, jpi
	358	h_rnf(ji,jj) = 0._wp
	359	DO jk = 1, nk_rnf(ji,jj)
	360	h_rnf(ji,jj) = h_rnf(ji,jj) + fse3t(ji,jj,jk)
[2528]	361	END DO
	362	END DO
[5403]	363	END DO
	364	ELSE ! runoffs applied at the surface
	365	nk_rnf(:,:) = 1
	366	h_rnf (:,:) = fse3t(:,:,1)
[1116]	367	ENDIF
[2528]	368	!
[3294]	369	rnf(:,:) = 0._wp ! runoff initialisation
[2528]	370	rnf_tsc(:,:,:) = 0._wp ! runoffs temperature & salinty contents initilisation
	371	!
[1116]	372	! ! ========================
	373	! ! River mouth vicinity
	374	! ! ========================
	375	!
	376	IF( ln_rnf_mouth ) THEN ! Specific treatment in vicinity of river mouths :
	377	! ! - Increase Kz in surface layers ( rn_hrnf > 0 )
	378	! ! - set to zero SSS damping (ln_ssr=T)
	379	! ! - mixed upstream-centered (ln_traadv_cen2=T)
	380	!
[2528]	381	IF ( ln_rnf_depth ) CALL ctl_warn( 'sbc_rnf_init: increased mixing turned on but effects may already', &
[3764]	382	& 'be spread through depth by ln_rnf_depth' )
[2528]	383	!
	384	nkrnf = 0 ! Number of level over which Kz increase
	385	IF( rn_hrnf > 0._wp ) THEN
[1116]	386	nkrnf = 2
[5403]	387	DO WHILE( nkrnf /= jpkm1 .AND. gdepw_1d(nkrnf+1) < rn_hrnf ) ; nkrnf = nkrnf + 1
	388	END DO
[3625]	389	IF( ln_sco ) CALL ctl_warn( 'sbc_rnf: number of levels over which Kz is increased is computed for zco...' )
[1116]	390	ENDIF
[5403]	391	IF(lwp) WRITE(numout,*)
	392	IF(lwp) WRITE(numout,*) ' Specific treatment used in vicinity of river mouths :'
	393	IF(lwp) WRITE(numout,*) ' - Increase Kz in surface layers (if rn_hrnf > 0 )'
	394	IF(lwp) WRITE(numout,*) ' by ', rn_avt_rnf,' m2/s over ', nkrnf, ' w-levels'
	395	IF(lwp) WRITE(numout,*) ' - set to zero SSS damping (if ln_ssr=T)'
	396	IF(lwp) WRITE(numout,*) ' - mixed upstream-centered (if ln_traadv_cen2=T)'
	397	!
	398	CALL rnf_mouth ! set river mouth mask
	399	!
	400	ELSE ! No treatment at river mouths
	401	IF(lwp) WRITE(numout,*)
	402	IF(lwp) WRITE(numout,*) ' No specific treatment at river mouths'
	403	rnfmsk (:,:) = 0._wp
	404	rnfmsk_z(:) = 0._wp
	405	nkrnf = 0
	406	ENDIF
[1116]	407	!
[5403]	408	END SUBROUTINE sbc_rnf_init
[1116]	409
	410
[888]	411	SUBROUTINE rnf_mouth
	412	!!----------------------------------------------------------------------
	413	!! * ROUTINE rnf_mouth *
[3764]	414	!!
[888]	415	!! ** Purpose : define the river mouths mask
	416	!!
	417	!! ** Method : read the river mouth mask (=0/1) in the river runoff
[3764]	418	!! climatological file. Defined a given vertical structure.
	419	!! CAUTION, the vertical structure is hard coded on the
[888]	420	!! first 5 levels.
	421	!! This fields can be used to:
[3764]	422	!! - set an upstream advection scheme
[1116]	423	!! (ln_rnf_mouth=T and ln_traadv_cen2=T)
[3764]	424	!! - increase vertical on the top nn_krnf vertical levels
[888]	425	!! at river runoff input grid point (nn_krnf>=2, see step.F90)
	426	!! - set to zero SSS restoring flux at river mouth grid points
	427	!!
	428	!! ** Action : rnfmsk set to 1 at river runoff input, 0 elsewhere
	429	!! rnfmsk_z vertical structure
	430	!!----------------------------------------------------------------------
[2784]	431	INTEGER :: inum ! temporary integers
	432	CHARACTER(len=140) :: cl_rnfile ! runoff file name
[888]	433	!!----------------------------------------------------------------------
[3764]	434	!
[888]	435	IF(lwp) WRITE(numout,*)
	436	IF(lwp) WRITE(numout,*) 'rnf_mouth : river mouth mask'
	437	IF(lwp) WRITE(numout,*) '~~~~~~~~~ '
[3625]	438	!
[1133]	439	cl_rnfile = TRIM( cn_dir )//TRIM( sn_cnf%clname )
	440	IF( .NOT. sn_cnf%ln_clim ) THEN ; WRITE(cl_rnfile, '(a,"_y",i4)' ) TRIM( cl_rnfile ), nyear ! add year
	441	IF( sn_cnf%cltype == 'monthly' ) WRITE(cl_rnfile, '(a,"m",i2)' ) TRIM( cl_rnfile ), nmonth ! add month
	442	ENDIF
[3625]	443	!
[888]	444	! horizontal mask (read in NetCDF file)
	445	CALL iom_open ( cl_rnfile, inum ) ! open file
	446	CALL iom_get ( inum, jpdom_data, sn_cnf%clvar, rnfmsk ) ! read the river mouth array
	447	CALL iom_close( inum ) ! close file
[3625]	448	!
[3632]	449	IF( nn_closea == 1 ) CALL clo_rnf( rnfmsk ) ! closed sea inflow set as ruver mouth
[3625]	450	!
[3764]	451	rnfmsk_z(:) = 0._wp ! vertical structure
[888]	452	rnfmsk_z(1) = 1.0
	453	rnfmsk_z(2) = 1.0 ! **********
	454	rnfmsk_z(3) = 0.5 ! HARD CODED on the 5 first levels
	455	rnfmsk_z(4) = 0.25 ! **********
	456	rnfmsk_z(5) = 0.125
[3764]	457	!
[888]	458	END SUBROUTINE rnf_mouth
[3764]	459
[888]	460	!!======================================================================
	461	END MODULE sbcrnf

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