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domzgr.F90 in NEMO/branches/2021/ticket2680_C1D_PAPA/src/OCE/DOM – NEMO

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source: NEMO/branches/2021/ticket2680_C1D_PAPA/src/OCE/DOM/domzgr.F90 @ 15020

Last change on this file since 15020 was 15020, checked in by gsamson, 3 years ago
merge trunk into branch (#2680)
Property svn:keywords set to `Id`
File size: 20.7 KB

Rev	Line
[3]	1	MODULE domzgr
	2	!!==============================================================================
	3	!! * MODULE domzgr *
[6140]	4	!! Ocean domain : definition of the vertical coordinate system
[3]	5	!!==============================================================================
[1566]	6	!! History : OPA ! 1995-12 (G. Madec) Original code : s vertical coordinate
	7	!! ! 1997-07 (G. Madec) lbc_lnk call
	8	!! ! 1997-04 (J.-O. Beismann)
[2528]	9	!! 8.5 ! 2002-09 (A. Bozec, G. Madec) F90: Free form and module
	10	!! - ! 2002-09 (A. de Miranda) rigid-lid + islands
[1566]	11	!! NEMO 1.0 ! 2003-08 (G. Madec) F90: Free form and module
	12	!! - ! 2005-10 (A. Beckmann) modifications for hybrid s-ccordinates & new stretching function
	13	!! 2.0 ! 2006-04 (R. Benshila, G. Madec) add zgr_zco
	14	!! 3.0 ! 2008-06 (G. Madec) insertion of domzgr_zps.h90 & conding style
	15	!! 3.2 ! 2009-07 (R. Benshila) Suppression of rigid-lid option
[2528]	16	!! 3.3 ! 2010-11 (G. Madec) add mbk. arrays associated to the deepest ocean level
[3680]	17	!! 3.4 ! 2012-08 (J. Siddorn) added Siddorn and Furner stretching function
[3764]	18	!! 3.4 ! 2012-12 (R. Bourdalle-Badie and G. Reffray) modify C1D case
[5120]	19	!! 3.6 ! 2014-11 (P. Mathiot and C. Harris) add ice shelf capabilitye
[6152]	20	!! 3.? ! 2015-11 (H. Liu) Modifications for Wetting/Drying
[1099]	21	!!----------------------------------------------------------------------
[3]	22
	23	!!----------------------------------------------------------------------
[7646]	24	!! dom_zgr : read or set the ocean vertical coordinate system
	25	!! zgr_read : read the vertical information in the domain configuration file
	26	!! zgr_top_bot : ocean top and bottom level for t-, u, and v-points with 1 as minimum value
[3]	27	!!---------------------------------------------------------------------
[7646]	28	USE oce ! ocean variables
	29	USE dom_oce ! ocean domain
	30	USE usrdef_zgr ! user defined vertical coordinate system
[9161]	31	USE closea ! closed seas
[7646]	32	USE depth_e3 ! depth <=> e3
[9023]	33	USE wet_dry, ONLY: ll_wd, ssh_ref ! Wetting and drying
[6140]	34	!
[7646]	35	USE in_out_manager ! I/O manager
	36	USE iom ! I/O library
	37	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
	38	USE lib_mpp ! distributed memory computing library
[3]	39
	40	IMPLICIT NONE
	41	PRIVATE
	42
[2715]	43	PUBLIC dom_zgr ! called by dom_init.F90
[3]	44
[2715]	45	!! * Substitutions
[12377]	46	# include "do_loop_substitute.h90"
[3]	47	!!----------------------------------------------------------------------
[9598]	48	!! NEMO/OCE 4.0 , NEMO Consortium (2018)
[1146]	49	!! $Id$
[10068]	50	!! Software governed by the CeCILL license (see ./LICENSE)
[3]	51	!!----------------------------------------------------------------------
	52	CONTAINS
	53
[7646]	54	SUBROUTINE dom_zgr( k_top, k_bot )
[3]	55	!!----------------------------------------------------------------------
	56	!! * ROUTINE dom_zgr *
	57	!!
[3764]	58	!! ** Purpose : set the depth of model levels and the resulting
	59	!! vertical scale factors.
[3]	60	!!
[4292]	61	!! ** Method : - reference 1D vertical coordinate (gdep._1d, e3._1d)
[1099]	62	!! - read/set ocean depth and ocean levels (bathy, mbathy)
	63	!! - vertical coordinate (gdep., e3.) depending on the
	64	!! coordinate chosen :
[2528]	65	!! ln_zco=T z-coordinate
[1099]	66	!! ln_zps=T z-coordinate with partial steps
	67	!! ln_zco=T s-coordinate
[3]	68	!!
[1099]	69	!! ** Action : define gdep., e3., mbathy and bathy
	70	!!----------------------------------------------------------------------
[7646]	71	INTEGER, DIMENSION(:,:), INTENT(out) :: k_top, k_bot ! ocean first and last level indices
[2528]	72	!
[12377]	73	INTEGER :: ji,jj,jk ! dummy loop index
	74	INTEGER :: ikt, ikb ! top/bot index
[7646]	75	INTEGER :: ioptio, ibat, ios ! local integer
	76	REAL(wp) :: zrefdep ! depth of the reference level (~10m)
[13286]	77	REAL(wp), DIMENSION(jpi,jpj) :: zmsk
[3]	78	!!----------------------------------------------------------------------
[3294]	79	!
[7646]	80	IF(lwp) THEN ! Control print
	81	WRITE(numout,*)
	82	WRITE(numout,*) 'dom_zgr : vertical coordinate'
	83	WRITE(numout,*) '~~~~~~~'
	84	ENDIF
[454]	85
[7646]	86	IF( ln_linssh .AND. lwp) WRITE(numout,*) ' linear free surface: the vertical mesh does not change in time'
[4147]	87
[7646]	88
	89	IF( ln_read_cfg ) THEN !== read in mesh_mask.nc file ==!
	90	IF(lwp) WRITE(numout,*)
[9169]	91	IF(lwp) WRITE(numout,*) ' ==>>> Read vertical mesh in ', TRIM( cn_domcfg ), ' file'
[7646]	92	!
	93	CALL zgr_read ( ln_zco , ln_zps , ln_sco, ln_isfcav, &
	94	& gdept_1d, gdepw_1d, e3t_1d, e3w_1d , & ! 1D gridpoints depth
	95	& gdept_0 , gdepw_0 , & ! gridpoints depth
	96	& e3t_0 , e3u_0 , e3v_0 , e3f_0 , & ! vertical scale factors
	97	& e3w_0 , e3uw_0 , e3vw_0 , & ! vertical scale factors
	98	& k_top , k_bot ) ! 1st & last ocean level
[9198]	99	!
[7646]	100	ELSE !== User defined configuration ==!
	101	IF(lwp) WRITE(numout,*)
	102	IF(lwp) WRITE(numout,*) ' User defined vertical mesh (usr_def_zgr)'
	103	!
	104	CALL usr_def_zgr( ln_zco , ln_zps , ln_sco, ln_isfcav, &
	105	& gdept_1d, gdepw_1d, e3t_1d, e3w_1d , & ! 1D gridpoints depth
	106	& gdept_0 , gdepw_0 , & ! gridpoints depth
	107	& e3t_0 , e3u_0 , e3v_0 , e3f_0 , & ! vertical scale factors
	108	& e3w_0 , e3uw_0 , e3vw_0 , & ! vertical scale factors
	109	& k_top , k_bot ) ! 1st & last ocean level
	110	!
	111	ENDIF
	112	!
[13286]	113	! the following is mandatory
	114	! make sure that closed boundaries are correctly defined in k_top that will be used to compute all mask arrays
	115	!
	116	zmsk(:,:) = 1._wp ! default: no closed boundaries
[14433]	117	IF( .NOT. l_Iperio ) THEN ! E-W closed:
[13286]	118	zmsk( mi0( 1+nn_hls):mi1( 1+nn_hls),:) = 0._wp ! first column of inner global domain at 0
	119	zmsk( mi0(jpiglo-nn_hls):mi1(jpiglo-nn_hls),:) = 0._wp ! last column of inner global domain at 0
	120	ENDIF
[14433]	121	IF( .NOT. l_Jperio ) THEN ! S closed:
[13286]	122	zmsk(:,mj0( 1+nn_hls):mj1( 1+nn_hls) ) = 0._wp ! first line of inner global domain at 0
	123	ENDIF
[14433]	124	IF( .NOT. ( l_Jperio .OR. l_NFold ) ) THEN ! N closed:
[13286]	125	zmsk(:,mj0(jpjglo-nn_hls):mj1(jpjglo-nn_hls) ) = 0._wp ! last line of inner global domain at 0
	126	ENDIF
	127	CALL lbc_lnk( 'usrdef_zgr', zmsk, 'T', 1. ) ! set halos
	128	k_top(:,:) = k_top(:,:) * NINT( zmsk(:,:) )
	129	!
[7646]	130	!!gm to be remove when removing the OLD definition of e3 scale factors so that gde3w disappears
	131	! Compute gde3w_0 (vertical sum of e3w)
[7753]	132	gde3w_0(:,:,1) = 0.5_wp * e3w_0(:,:,1)
[7646]	133	DO jk = 2, jpk
[7753]	134	gde3w_0(:,:,jk) = gde3w_0(:,:,jk-1) + e3w_0(:,:,jk)
[7646]	135	END DO
	136	!
[9209]	137	! Any closed seas (defined by closea_mask > 0 in domain_cfg file) to be filled
	138	! in at runtime if ln_closea=.false.
[12377]	139	IF( ln_closea ) THEN
	140	IF ( ln_maskcs ) THEN
	141	! mask all the closed sea
	142	CALL clo_msk( k_top, k_bot, mask_opnsea, 'mask_opensea' )
	143	ELSE IF ( ln_mask_csundef ) THEN
	144	! defined closed sea are kept
	145	! mask all the undefined closed sea
	146	CALL clo_msk( k_top, k_bot, mask_csundef, 'mask_csundef' )
	147	END IF
	148	END IF
[9209]	149	!
[1099]	150	IF(lwp) THEN ! Control print
[454]	151	WRITE(numout,*)
[7646]	152	WRITE(numout,*) ' Type of vertical coordinate (read in ', TRIM( cn_domcfg ), ' file or set in userdef_nam) :'
[6140]	153	WRITE(numout,*) ' z-coordinate - full steps ln_zco = ', ln_zco
	154	WRITE(numout,*) ' z-coordinate - partial steps ln_zps = ', ln_zps
	155	WRITE(numout,*) ' s- or hybrid z-s-coordinate ln_sco = ', ln_sco
	156	WRITE(numout,*) ' ice shelf cavities ln_isfcav = ', ln_isfcav
[454]	157	ENDIF
	158
[1099]	159	ioptio = 0 ! Check Vertical coordinate options
[3764]	160	IF( ln_zco ) ioptio = ioptio + 1
	161	IF( ln_zps ) ioptio = ioptio + 1
	162	IF( ln_sco ) ioptio = ioptio + 1
[2528]	163	IF( ioptio /= 1 ) CALL ctl_stop( ' none or several vertical coordinate options used' )
[7646]	164
	165
	166	! ! top/bottom ocean level indices for t-, u- and v-points (f-point also for top)
	167	CALL zgr_top_bot( k_top, k_bot ) ! with a minimum value set to 1
[12377]	168	!
	169	! ! ice shelf draft and bathymetry
[13295]	170	DO_2D( 1, 1, 1, 1 )
[12377]	171	ikt = mikt(ji,jj)
	172	ikb = mbkt(ji,jj)
	173	bathy (ji,jj) = gdepw_0(ji,jj,ikb+1)
	174	risfdep(ji,jj) = gdepw_0(ji,jj,ikt )
	175	END_2D
	176	!
[7646]	177	! ! deepest/shallowest W level Above/Below ~10m
	178	!!gm BUG in s-coordinate this does not work!
	179	zrefdep = 10._wp - 0.1_wp * MINVAL( e3w_1d ) ! ref. depth with tolerance (10% of minimum layer thickness)
	180	nlb10 = MINLOC( gdepw_1d, mask = gdepw_1d > zrefdep, dim = 1 ) ! shallowest W level Below ~10m
	181	nla10 = nlb10 - 1 ! deepest W level Above ~10m
	182	!!gm end bug
[2528]	183	!
[13286]	184	IF( lwp ) THEN
[7646]	185	WRITE(numout,*) ' MIN val k_top ', MINVAL( k_top(:,:) ), ' MAX ', MAXVAL( k_top(:,:) )
	186	WRITE(numout,*) ' MIN val k_bot ', MINVAL( k_bot(:,:) ), ' MAX ', MAXVAL( k_bot(:,:) )
[4292]	187	WRITE(numout,*) ' MIN val depth t ', MINVAL( gdept_0(:,:,:) ), &
[6140]	188	& ' w ', MINVAL( gdepw_0(:,:,:) ), '3w ', MINVAL( gde3w_0(:,:,:) )
	189	WRITE(numout,*) ' MIN val e3 t ', MINVAL( e3t_0(:,:,:) ), ' f ', MINVAL( e3f_0(:,:,:) ), &
	190	& ' u ', MINVAL( e3u_0(:,:,:) ), ' u ', MINVAL( e3v_0(:,:,:) ), &
	191	& ' uw', MINVAL( e3uw_0(:,:,:) ), ' vw', MINVAL( e3vw_0(:,:,:)), &
	192	& ' w ', MINVAL( e3w_0(:,:,:) )
[1348]	193
[4292]	194	WRITE(numout,*) ' MAX val depth t ', MAXVAL( gdept_0(:,:,:) ), &
[6140]	195	& ' w ', MAXVAL( gdepw_0(:,:,:) ), '3w ', MAXVAL( gde3w_0(:,:,:) )
	196	WRITE(numout,*) ' MAX val e3 t ', MAXVAL( e3t_0(:,:,:) ), ' f ', MAXVAL( e3f_0(:,:,:) ), &
	197	& ' u ', MAXVAL( e3u_0(:,:,:) ), ' u ', MAXVAL( e3v_0(:,:,:) ), &
	198	& ' uw', MAXVAL( e3uw_0(:,:,:) ), ' vw', MAXVAL( e3vw_0(:,:,:) ), &
	199	& ' w ', MAXVAL( e3w_0(:,:,:) )
[1348]	200	ENDIF
[2528]	201	!
[3]	202	END SUBROUTINE dom_zgr
	203
	204
[7646]	205	SUBROUTINE zgr_read( ld_zco , ld_zps , ld_sco , ld_isfcav, & ! type of vertical coordinate
	206	& pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d , & ! 1D reference vertical coordinate
	207	& pdept , pdepw , & ! 3D t & w-points depth
	208	& pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors
	209	& pe3w , pe3uw , pe3vw , & ! - - -
	210	& k_top , k_bot ) ! top & bottom ocean level
	211	!!---------------------------------------------------------------------
	212	!! * ROUTINE zgr_read *
[3]	213	!!
[7646]	214	!! ** Purpose : Read the vertical information in the domain configuration file
[3]	215	!!
	216	!!----------------------------------------------------------------------
[7646]	217	LOGICAL , INTENT(out) :: ld_zco, ld_zps, ld_sco ! vertical coordinate flags
	218	LOGICAL , INTENT(out) :: ld_isfcav ! under iceshelf cavity flag
	219	REAL(wp), DIMENSION(:) , INTENT(out) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m]
	220	REAL(wp), DIMENSION(:) , INTENT(out) :: pe3t_1d , pe3w_1d ! 1D vertical scale factors [m]
	221	REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pdept, pdepw ! grid-point depth [m]
	222	REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3t , pe3u , pe3v , pe3f ! vertical scale factors [m]
	223	REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3w , pe3uw, pe3vw ! - - -
	224	INTEGER , DIMENSION(:,:) , INTENT(out) :: k_top , k_bot ! first & last ocean level
	225	!
[7753]	226	INTEGER :: jk ! dummy loop index
[14433]	227	INTEGER :: inum, iatt
[7646]	228	REAL(WP) :: z_zco, z_zps, z_sco, z_cav
	229	REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D workspace
[14433]	230	CHARACTER(len=7) :: catt ! 'zco', 'zps, 'sco' or 'UNKNOWN'
[3]	231	!!----------------------------------------------------------------------
[3294]	232	!
[7646]	233	IF(lwp) THEN
[3]	234	WRITE(numout,*)
[7646]	235	WRITE(numout,*) ' zgr_read : read the vertical coordinates in ', TRIM( cn_domcfg ), ' file'
	236	WRITE(numout,*) ' ~~~~~~~~'
[3]	237	ENDIF
[1099]	238	!
[7646]	239	CALL iom_open( cn_domcfg, inum )
[3294]	240	!
[7646]	241	! !* type of vertical coordinate
[14433]	242	CALL iom_getatt( inum, 'VertCoord', catt ) ! returns 'UNKNOWN' if not found
	243	ld_zco = catt == 'zco' ! default = .false.
	244	ld_zps = catt == 'zps' ! default = .false.
	245	ld_sco = catt == 'sco' ! default = .false.
[7646]	246	! !* ocean cavities under iceshelves
[14433]	247	CALL iom_getatt( inum, 'IsfCav', iatt ) ! returns -999 if not found
	248	ld_isfcav = iatt == 1 ! default = .false.
[3294]	249	!
[14433]	250	! ------- keep compatibility with OLD VERSION... start -------
	251	IF( catt == 'UNKNOWN' ) THEN
	252	CALL iom_get( inum, 'ln_zco', z_zco ) ; ld_zco = z_zco /= 0._wp
	253	CALL iom_get( inum, 'ln_zps', z_zps ) ; ld_zps = z_zps /= 0._wp
	254	CALL iom_get( inum, 'ln_sco', z_sco ) ; ld_sco = z_sco /= 0._wp
	255	ENDIF
	256	IF( iatt == -999 ) THEN
	257	CALL iom_get( inum, 'ln_isfcav', z_cav ) ; ld_isfcav = z_cav /= 0._wp
	258	ENDIF
	259	! ------- keep compatibility with OLD VERSION... end -------
	260	!
[7646]	261	! !* vertical scale factors
	262	CALL iom_get( inum, jpdom_unknown, 'e3t_1d' , pe3t_1d ) ! 1D reference coordinate
	263	CALL iom_get( inum, jpdom_unknown, 'e3w_1d' , pe3w_1d )
[1099]	264	!
[13286]	265	CALL iom_get( inum, jpdom_global, 'e3t_0' , pe3t , cd_type = 'T', psgn = 1._wp, kfill = jpfillcopy ) ! 3D coordinate
	266	CALL iom_get( inum, jpdom_global, 'e3u_0' , pe3u , cd_type = 'U', psgn = 1._wp, kfill = jpfillcopy )
	267	CALL iom_get( inum, jpdom_global, 'e3v_0' , pe3v , cd_type = 'V', psgn = 1._wp, kfill = jpfillcopy )
	268	CALL iom_get( inum, jpdom_global, 'e3f_0' , pe3f , cd_type = 'F', psgn = 1._wp, kfill = jpfillcopy )
	269	CALL iom_get( inum, jpdom_global, 'e3w_0' , pe3w , cd_type = 'W', psgn = 1._wp, kfill = jpfillcopy )
	270	CALL iom_get( inum, jpdom_global, 'e3uw_0' , pe3uw, cd_type = 'U', psgn = 1._wp, kfill = jpfillcopy )
	271	CALL iom_get( inum, jpdom_global, 'e3vw_0' , pe3vw, cd_type = 'V', psgn = 1._wp, kfill = jpfillcopy )
[2528]	272	!
[7646]	273	! !* depths
	274	! !- old depth definition (obsolescent feature)
	275	IF( iom_varid( inum, 'gdept_1d', ldstop = .FALSE. ) > 0 .AND. &
	276	& iom_varid( inum, 'gdepw_1d', ldstop = .FALSE. ) > 0 .AND. &
	277	& iom_varid( inum, 'gdept_0' , ldstop = .FALSE. ) > 0 .AND. &
	278	& iom_varid( inum, 'gdepw_0' , ldstop = .FALSE. ) > 0 ) THEN
	279	CALL ctl_warn( 'zgr_read : old definition of depths and scale factors used ', &
	280	& ' depths at t- and w-points read in the domain configuration file')
	281	CALL iom_get( inum, jpdom_unknown, 'gdept_1d', pdept_1d )
	282	CALL iom_get( inum, jpdom_unknown, 'gdepw_1d', pdepw_1d )
[13286]	283	CALL iom_get( inum, jpdom_global , 'gdept_0' , pdept, kfill = jpfillcopy )
	284	CALL iom_get( inum, jpdom_global , 'gdepw_0' , pdepw, kfill = jpfillcopy )
[3]	285	!
[7646]	286	ELSE !- depths computed from e3. scale factors
	287	CALL e3_to_depth( pe3t_1d, pe3w_1d, pdept_1d, pdepw_1d ) ! 1D reference depth
	288	CALL e3_to_depth( pe3t , pe3w , pdept , pdepw ) ! 3D depths
	289	IF(lwp) THEN
	290	WRITE(numout,*)
	291	WRITE(numout,*) ' Reference 1D z-coordinate depth and scale factors:'
	292	WRITE(numout, "(9x,' level gdept_1d gdepw_1d e3t_1d e3w_1d ')" )
	293	WRITE(numout, "(10x, i4, 4f9.2)" ) ( jk, pdept_1d(jk), pdepw_1d(jk), pe3t_1d(jk), pe3w_1d(jk), jk = 1, jpk )
	294	ENDIF
[3]	295	ENDIF
[1099]	296	!
[7646]	297	! !* ocean top and bottom level
[13286]	298	CALL iom_get( inum, jpdom_global, 'top_level' , z2d ) ! 1st wet T-points (ISF)
[9919]	299	k_top(:,:) = NINT( z2d(:,:) )
[13286]	300	CALL iom_get( inum, jpdom_global, 'bottom_level' , z2d ) ! last wet T-points
[9919]	301	k_bot(:,:) = NINT( z2d(:,:) )
[3294]	302	!
[9023]	303	! reference depth for negative bathy (wetting and drying only)
	304	IF( ll_wd ) CALL iom_get( inum, 'rn_wd_ref_depth' , ssh_ref )
[3294]	305	!
[7646]	306	CALL iom_close( inum )
[3294]	307	!
[7646]	308	END SUBROUTINE zgr_read
[3]	309
	310
[7646]	311	SUBROUTINE zgr_top_bot( k_top, k_bot )
[2528]	312	!!----------------------------------------------------------------------
[7646]	313	!! * ROUTINE zgr_top_bot *
[2528]	314	!!
	315	!! ** Purpose : defines the vertical index of ocean bottom (mbk. arrays)
	316	!!
[7646]	317	!! ** Method : computes from k_top and k_bot with a minimum value of 1 over land
[2528]	318	!!
[7646]	319	!! ** Action : mikt, miku, mikv : vertical indices of the shallowest
	320	!! ocean level at t-, u- & v-points
	321	!! (min value = 1)
[2528]	322	!! ** Action : mbkt, mbku, mbkv : vertical indices of the deeptest
	323	!! ocean level at t-, u- & v-points
	324	!! (min value = 1 over land)
	325	!!----------------------------------------------------------------------
[7646]	326	INTEGER , DIMENSION(:,:), INTENT(in) :: k_top, k_bot ! top & bottom ocean level indices
	327	!
[2528]	328	INTEGER :: ji, jj ! dummy loop indices
[9019]	329	REAL(wp), DIMENSION(jpi,jpj) :: zk ! workspace
[2528]	330	!!----------------------------------------------------------------------
	331	!
	332	IF(lwp) WRITE(numout,*)
[7646]	333	IF(lwp) WRITE(numout,*) ' zgr_top_bot : ocean top and bottom k-index of T-, U-, V- and W-levels '
	334	IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~'
[2528]	335	!
[7753]	336	mikt(:,:) = MAX( k_top(:,:) , 1 ) ! top ocean k-index of T-level (=1 over land)
	337	!
	338	mbkt(:,:) = MAX( k_bot(:,:) , 1 ) ! bottom ocean k-index of T-level (=1 over land)
	339
[7646]	340	! ! N.B. top k-index of W-level = mikt
	341	! ! bottom k-index of W-level = mbkt+1
[15020]	342	DO_2D( 0, 0, 0, 0 )
[12377]	343	miku(ji,jj) = MAX( mikt(ji+1,jj ) , mikt(ji,jj) )
	344	mikv(ji,jj) = MAX( mikt(ji ,jj+1) , mikt(ji,jj) )
	345	mikf(ji,jj) = MAX( mikt(ji ,jj+1) , mikt(ji,jj), mikt(ji+1,jj ), mikt(ji+1,jj+1) )
	346	!
	347	mbku(ji,jj) = MIN( mbkt(ji+1,jj ) , mbkt(ji,jj) )
	348	mbkv(ji,jj) = MIN( mbkt(ji ,jj+1) , mbkt(ji,jj) )
	349	END_2D
[4990]	350	! converte into REAL to use lbc_lnk ; impose a min value of 1 as a zero can be set in lbclnk
[15020]	351	DO_2D( 0, 0, 0, 0 )
	352	zk(ji,jj) = REAL( miku(ji,jj), wp )
	353	END_2D
	354	CALL lbc_lnk( 'domzgr', zk, 'U', 1.0_wp )
	355	miku(:,:) = MAX( NINT( zk(:,:) ), 1 )
	356
	357	DO_2D( 0, 0, 0, 0 )
	358	zk(ji,jj) = REAL( mikv(ji,jj), wp )
	359	END_2D
	360	CALL lbc_lnk( 'domzgr', zk, 'V', 1.0_wp )
	361	mikv(:,:) = MAX( NINT( zk(:,:) ), 1 )
	362
	363	DO_2D( 0, 0, 0, 0 )
	364	zk(ji,jj) = REAL( mikf(ji,jj), wp )
	365	END_2D
	366	CALL lbc_lnk( 'domzgr', zk, 'F', 1.0_wp )
	367	mikf(:,:) = MAX( NINT( zk(:,:) ), 1 )
[4990]	368	!
[15020]	369	DO_2D( 0, 0, 0, 0 )
	370	zk(ji,jj) = REAL( mbku(ji,jj), wp )
	371	END_2D
	372	CALL lbc_lnk( 'domzgr', zk, 'U', 1.0_wp )
	373	mbku(:,:) = MAX( NINT( zk(:,:) ), 1 )
	374
	375	DO_2D( 0, 0, 0, 0 )
	376	zk(ji,jj) = REAL( mbkv(ji,jj), wp )
	377	END_2D
	378	CALL lbc_lnk( 'domzgr', zk, 'V', 1.0_wp )
	379	mbkv(:,:) = MAX( NINT( zk(:,:) ), 1 )
[4990]	380	!
[7646]	381	END SUBROUTINE zgr_top_bot
[454]	382
[3]	383	!!======================================================================
	384	END MODULE domzgr

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