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domvvl.F90 in NEMO/branches/2019/ENHANCE-02_ISF_nemo/src/OCE/DOM – NEMO

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source: NEMO/branches/2019/ENHANCE-02_ISF_nemo/src/OCE/DOM/domvvl.F90 @ 11823

Last change on this file since 11823 was 11823, checked in by mathiot, 4 years ago
rm useless USE statement, option compatibility test + minor changes
Property svn:keywords set to `Id`
File size: 56.2 KB

Rev	Line
[592]	1	MODULE domvvl
	2	!!======================================================================
	3	!! * MODULE domvvl *
	4	!! Ocean :
	5	!!======================================================================
[1438]	6	!! History : 2.0 ! 2006-06 (B. Levier, L. Marie) original code
	7	!! 3.1 ! 2009-02 (G. Madec, M. Leclair, R. Benshila) pure z* coordinate
[9019]	8	!! 3.3 ! 2011-10 (M. Leclair) totally rewrote domvvl: vvl option includes z_star and z_tilde coordinates
[5120]	9	!! 3.6 ! 2014-11 (P. Mathiot) add ice shelf capability
[592]	10	!!----------------------------------------------------------------------
[5836]	11
[592]	12	!!----------------------------------------------------------------------
[4292]	13	!! dom_vvl_init : define initial vertical scale factors, depths and column thickness
	14	!! dom_vvl_sf_nxt : Compute next vertical scale factors
	15	!! dom_vvl_sf_swp : Swap vertical scale factors and update the vertical grid
	16	!! dom_vvl_interpol : Interpolate vertical scale factors from one grid point to another
	17	!! dom_vvl_rst : read/write restart file
	18	!! dom_vvl_ctl : Check the vvl options
	19	!!----------------------------------------------------------------------
[592]	20	USE oce ! ocean dynamics and tracers
[6140]	21	USE phycst ! physical constant
[592]	22	USE dom_oce ! ocean space and time domain
[4292]	23	USE sbc_oce ! ocean surface boundary condition
[6152]	24	USE wet_dry ! wetting and drying
[7646]	25	USE usrdef_istate ! user defined initial state (wad only)
[6140]	26	USE restart ! ocean restart
	27	!
[592]	28	USE in_out_manager ! I/O manager
[4292]	29	USE iom ! I/O manager library
[592]	30	USE lib_mpp ! distributed memory computing library
	31	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
[3294]	32	USE timing ! Timing
[592]	33
	34	IMPLICIT NONE
	35	PRIVATE
	36
[4292]	37	PUBLIC dom_vvl_init ! called by domain.F90
[11823]	38	PUBLIC dom_vvl_zgr ! called by isfcpl.F90
[4292]	39	PUBLIC dom_vvl_sf_nxt ! called by step.F90
	40	PUBLIC dom_vvl_sf_swp ! called by step.F90
	41	PUBLIC dom_vvl_interpol ! called by dynnxt.F90
[592]	42
[5836]	43	! !!* Namelist nam_vvl
	44	LOGICAL , PUBLIC :: ln_vvl_zstar = .FALSE. ! zstar vertical coordinate
	45	LOGICAL , PUBLIC :: ln_vvl_ztilde = .FALSE. ! ztilde vertical coordinate
	46	LOGICAL , PUBLIC :: ln_vvl_layer = .FALSE. ! level vertical coordinate
	47	LOGICAL , PUBLIC :: ln_vvl_ztilde_as_zstar = .FALSE. ! ztilde vertical coordinate
	48	LOGICAL , PUBLIC :: ln_vvl_zstar_at_eqtor = .FALSE. ! ztilde vertical coordinate
	49	LOGICAL , PUBLIC :: ln_vvl_kepe = .FALSE. ! kinetic/potential energy transfer
	50	! ! conservation: not used yet
	51	REAL(wp) :: rn_ahe3 ! thickness diffusion coefficient
	52	REAL(wp) :: rn_rst_e3t ! ztilde to zstar restoration timescale [days]
	53	REAL(wp) :: rn_lf_cutoff ! cutoff frequency for low-pass filter [days]
	54	REAL(wp) :: rn_zdef_max ! maximum fractional e3t deformation
	55	LOGICAL , PUBLIC :: ln_vvl_dbg = .FALSE. ! debug control prints
[592]	56
[5836]	57	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: un_td, vn_td ! thickness diffusion transport
	58	REAL(wp) , ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: hdiv_lf ! low frequency part of hz divergence
	59	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: tilde_e3t_b, tilde_e3t_n ! baroclinic scale factors
	60	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: tilde_e3t_a, dtilde_e3t_a ! baroclinic scale factors
	61	REAL(wp) , ALLOCATABLE, SAVE, DIMENSION(:,:) :: frq_rst_e3t ! retoring period for scale factors
	62	REAL(wp) , ALLOCATABLE, SAVE, DIMENSION(:,:) :: frq_rst_hdv ! retoring period for low freq. divergence
[1438]	63
[592]	64	!! * Substitutions
	65	# include "vectopt_loop_substitute.h90"
	66	!!----------------------------------------------------------------------
[10068]	67	!! NEMO/OCE 4.0 , NEMO Consortium (2018)
[888]	68	!! $Id$
[10068]	69	!! Software governed by the CeCILL license (see ./LICENSE)
[592]	70	!!----------------------------------------------------------------------
[4292]	71	CONTAINS
	72
[2715]	73	INTEGER FUNCTION dom_vvl_alloc()
	74	!!----------------------------------------------------------------------
[4292]	75	!! * FUNCTION dom_vvl_alloc *
[2715]	76	!!----------------------------------------------------------------------
[6140]	77	IF( ln_vvl_zstar ) dom_vvl_alloc = 0
[4292]	78	IF( ln_vvl_ztilde .OR. ln_vvl_layer ) THEN
[4338]	79	ALLOCATE( tilde_e3t_b(jpi,jpj,jpk) , tilde_e3t_n(jpi,jpj,jpk) , tilde_e3t_a(jpi,jpj,jpk) , &
	80	& dtilde_e3t_a(jpi,jpj,jpk) , un_td (jpi,jpj,jpk) , vn_td (jpi,jpj,jpk) , &
	81	& STAT = dom_vvl_alloc )
[10425]	82	CALL mpp_sum ( 'domvvl', dom_vvl_alloc )
	83	IF( dom_vvl_alloc /= 0 ) CALL ctl_stop( 'STOP', 'dom_vvl_alloc: failed to allocate arrays' )
[6140]	84	un_td = 0._wp
	85	vn_td = 0._wp
[4292]	86	ENDIF
	87	IF( ln_vvl_ztilde ) THEN
	88	ALLOCATE( frq_rst_e3t(jpi,jpj) , frq_rst_hdv(jpi,jpj) , hdiv_lf(jpi,jpj,jpk) , STAT= dom_vvl_alloc )
[10425]	89	CALL mpp_sum ( 'domvvl', dom_vvl_alloc )
	90	IF( dom_vvl_alloc /= 0 ) CALL ctl_stop( 'STOP', 'dom_vvl_alloc: failed to allocate arrays' )
[4292]	91	ENDIF
[6140]	92	!
[2715]	93	END FUNCTION dom_vvl_alloc
	94
	95
[4292]	96	SUBROUTINE dom_vvl_init
[592]	97	!!----------------------------------------------------------------------
[4292]	98	!! * ROUTINE dom_vvl_init *
[592]	99	!!
[4292]	100	!! ** Purpose : Initialization of all scale factors, depths
	101	!! and water column heights
	102	!!
	103	!! ** Method : - use restart file and/or initialize
	104	!! - interpolate scale factors
	105	!!
[6140]	106	!! ** Action : - e3t_(n/b) and tilde_e3t_(n/b)
	107	!! - Regrid: e3(u/v)_n
	108	!! e3(u/v)_b
	109	!! e3w_n
	110	!! e3(u/v)w_b
	111	!! e3(u/v)w_n
	112	!! gdept_n, gdepw_n and gde3w_n
[4292]	113	!! - h(t/u/v)_0
	114	!! - frq_rst_e3t and frq_rst_hdv
	115	!!
	116	!! Reference : Leclair, M., and G. Madec, 2011, Ocean Modelling.
[592]	117	!!----------------------------------------------------------------------
[6140]	118	!
[4292]	119	IF(lwp) WRITE(numout,*)
	120	IF(lwp) WRITE(numout,*) 'dom_vvl_init : Variable volume activated'
	121	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~'
[6140]	122	!
	123	CALL dom_vvl_ctl ! choose vertical coordinate (z_star, z_tilde or layer)
	124	!
	125	! ! Allocate module arrays
[4292]	126	IF( dom_vvl_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'dom_vvl_init : unable to allocate arrays' )
[6140]	127	!
	128	! ! Read or initialize e3t_(b/n), tilde_e3t_(b/n) and hdiv_lf
[4292]	129	CALL dom_vvl_rst( nit000, 'READ' )
[7753]	130	e3t_a(:,:,jpk) = e3t_0(:,:,jpk) ! last level always inside the sea floor set one for all
[6140]	131	!
[11823]	132	CALL dom_vvl_zgr() ! interpolation scale factor, depth and water column
	133	!
	134	END SUBROUTINE dom_vvl_init
	135	!
	136	SUBROUTINE dom_vvl_zgr()
	137	!!----------------------------------------------------------------------
	138	!! * ROUTINE dom_vvl_init *
	139	!!
	140	!! ** Purpose : Interpolation of all scale factors,
	141	!! depths and water column heights
	142	!!
	143	!! ** Method : - interpolate scale factors
	144	!!
	145	!! ** Action : - e3t_(n/b) and tilde_e3t_(n/b)
	146	!! - Regrid: e3(u/v)_n
	147	!! e3(u/v)_b
	148	!! e3w_n
	149	!! e3(u/v)w_b
	150	!! e3(u/v)w_n
	151	!! gdept_n, gdepw_n and gde3w_n
	152	!! - h(t/u/v)_0
	153	!! - frq_rst_e3t and frq_rst_hdv
	154	!!
	155	!! Reference : Leclair, M., and G. Madec, 2011, Ocean Modelling.
	156	!!----------------------------------------------------------------------
	157	INTEGER :: ji, jj, jk
	158	INTEGER :: ii0, ii1, ij0, ij1
	159	REAL(wp):: zcoef
	160	!!----------------------------------------------------------------------
	161	!
[6140]	162	! !== Set of all other vertical scale factors ==! (now and before)
	163	! ! Horizontal interpolation of e3t
	164	CALL dom_vvl_interpol( e3t_b(:,:,:), e3u_b(:,:,:), 'U' ) ! from T to U
	165	CALL dom_vvl_interpol( e3t_n(:,:,:), e3u_n(:,:,:), 'U' )
	166	CALL dom_vvl_interpol( e3t_b(:,:,:), e3v_b(:,:,:), 'V' ) ! from T to V
	167	CALL dom_vvl_interpol( e3t_n(:,:,:), e3v_n(:,:,:), 'V' )
	168	CALL dom_vvl_interpol( e3u_n(:,:,:), e3f_n(:,:,:), 'F' ) ! from U to F
	169	! ! Vertical interpolation of e3t,u,v
	170	CALL dom_vvl_interpol( e3t_n(:,:,:), e3w_n (:,:,:), 'W' ) ! from T to W
	171	CALL dom_vvl_interpol( e3t_b(:,:,:), e3w_b (:,:,:), 'W' )
	172	CALL dom_vvl_interpol( e3u_n(:,:,:), e3uw_n(:,:,:), 'UW' ) ! from U to UW
	173	CALL dom_vvl_interpol( e3u_b(:,:,:), e3uw_b(:,:,:), 'UW' )
	174	CALL dom_vvl_interpol( e3v_n(:,:,:), e3vw_n(:,:,:), 'VW' ) ! from V to UW
	175	CALL dom_vvl_interpol( e3v_b(:,:,:), e3vw_b(:,:,:), 'VW' )
[9449]	176
	177	! We need to define e3[tuv]_a for AGRIF initialisation (should not be a problem for the restartability...)
	178	e3t_a(:,:,:) = e3t_n(:,:,:)
	179	e3u_a(:,:,:) = e3u_n(:,:,:)
	180	e3v_a(:,:,:) = e3v_n(:,:,:)
[6140]	181	!
	182	! !== depth of t and w-point ==! (set the isf depth as it is in the initial timestep)
[7753]	183	gdept_n(:,:,1) = 0.5_wp * e3w_n(:,:,1) ! reference to the ocean surface (used for MLD and light penetration)
	184	gdepw_n(:,:,1) = 0.0_wp
	185	gde3w_n(:,:,1) = gdept_n(:,:,1) - sshn(:,:) ! reference to a common level z=0 for hpg
	186	gdept_b(:,:,1) = 0.5_wp * e3w_b(:,:,1)
	187	gdepw_b(:,:,1) = 0.0_wp
[6140]	188	DO jk = 2, jpk ! vertical sum
[5120]	189	DO jj = 1,jpj
	190	DO ji = 1,jpi
[6140]	191	! zcoef = tmask - wmask ! 0 everywhere tmask = wmask, ie everywhere expect at jk = mikt
	192	! ! 1 everywhere from mbkt to mikt + 1 or 1 (if no isf)
	193	! ! 0.5 where jk = mikt
	194	!!gm ??????? BUG ? gdept_n as well as gde3w_n does not include the thickness of ISF ??
	195	zcoef = ( tmask(ji,jj,jk) - wmask(ji,jj,jk) )
	196	gdepw_n(ji,jj,jk) = gdepw_n(ji,jj,jk-1) + e3t_n(ji,jj,jk-1)
	197	gdept_n(ji,jj,jk) = zcoef * ( gdepw_n(ji,jj,jk ) + 0.5 * e3w_n(ji,jj,jk)) &
	198	& + (1-zcoef) * ( gdept_n(ji,jj,jk-1) + e3w_n(ji,jj,jk))
	199	gde3w_n(ji,jj,jk) = gdept_n(ji,jj,jk) - sshn(ji,jj)
	200	gdepw_b(ji,jj,jk) = gdepw_b(ji,jj,jk-1) + e3t_b(ji,jj,jk-1)
	201	gdept_b(ji,jj,jk) = zcoef * ( gdepw_b(ji,jj,jk ) + 0.5 * e3w_b(ji,jj,jk)) &
	202	& + (1-zcoef) * ( gdept_b(ji,jj,jk-1) + e3w_b(ji,jj,jk))
[4990]	203	END DO
	204	END DO
[592]	205	END DO
[6140]	206	!
	207	! !== thickness of the water column !! (ocean portion only)
[7753]	208	ht_n(:,:) = e3t_n(:,:,1) * tmask(:,:,1) !!gm BUG : this should be 1/2 * e3w(k=1) ....
	209	hu_b(:,:) = e3u_b(:,:,1) * umask(:,:,1)
	210	hu_n(:,:) = e3u_n(:,:,1) * umask(:,:,1)
	211	hv_b(:,:) = e3v_b(:,:,1) * vmask(:,:,1)
	212	hv_n(:,:) = e3v_n(:,:,1) * vmask(:,:,1)
[6140]	213	DO jk = 2, jpkm1
[7753]	214	ht_n(:,:) = ht_n(:,:) + e3t_n(:,:,jk) * tmask(:,:,jk)
	215	hu_b(:,:) = hu_b(:,:) + e3u_b(:,:,jk) * umask(:,:,jk)
	216	hu_n(:,:) = hu_n(:,:) + e3u_n(:,:,jk) * umask(:,:,jk)
	217	hv_b(:,:) = hv_b(:,:) + e3v_b(:,:,jk) * vmask(:,:,jk)
	218	hv_n(:,:) = hv_n(:,:) + e3v_n(:,:,jk) * vmask(:,:,jk)
[4370]	219	END DO
[6140]	220	!
	221	! !== inverse of water column thickness ==! (u- and v- points)
[7753]	222	r1_hu_b(:,:) = ssumask(:,:) / ( hu_b(:,:) + 1._wp - ssumask(:,:) ) ! _i mask due to ISF
	223	r1_hu_n(:,:) = ssumask(:,:) / ( hu_n(:,:) + 1._wp - ssumask(:,:) )
	224	r1_hv_b(:,:) = ssvmask(:,:) / ( hv_b(:,:) + 1._wp - ssvmask(:,:) )
	225	r1_hv_n(:,:) = ssvmask(:,:) / ( hv_n(:,:) + 1._wp - ssvmask(:,:) )
	226
[6140]	227	! !== z_tilde coordinate case ==! (Restoring frequencies)
[4292]	228	IF( ln_vvl_ztilde ) THEN
[6140]	229	!!gm : idea: add here a READ in a file of custumized restoring frequency
	230	! ! Values in days provided via the namelist
	231	! ! use rsmall to avoid possible division by zero errors with faulty settings
[7753]	232	frq_rst_e3t(:,:) = 2._wp * rpi / ( MAX( rn_rst_e3t , rsmall ) * 86400.0_wp )
	233	frq_rst_hdv(:,:) = 2._wp * rpi / ( MAX( rn_lf_cutoff, rsmall ) * 86400.0_wp )
[6140]	234	!
	235	IF( ln_vvl_ztilde_as_zstar ) THEN ! z-star emulation using z-tile
[7753]	236	frq_rst_e3t(:,:) = 0._wp !Ignore namelist settings
	237	frq_rst_hdv(:,:) = 1._wp / rdt
[4292]	238	ENDIF
[6140]	239	IF ( ln_vvl_zstar_at_eqtor ) THEN ! use z-star in vicinity of the Equator
[4292]	240	DO jj = 1, jpj
	241	DO ji = 1, jpi
[6140]	242	!!gm case \|gphi\| >= 6 degrees is useless initialized just above by default
[4292]	243	IF( ABS(gphit(ji,jj)) >= 6.) THEN
	244	! values outside the equatorial band and transition zone (ztilde)
	245	frq_rst_e3t(ji,jj) = 2.0_wp * rpi / ( MAX( rn_rst_e3t , rsmall ) * 86400.e0_wp )
	246	frq_rst_hdv(ji,jj) = 2.0_wp * rpi / ( MAX( rn_lf_cutoff, rsmall ) * 86400.e0_wp )
[6140]	247	ELSEIF( ABS(gphit(ji,jj)) <= 2.5) THEN ! Equator strip ==> z-star
[4292]	248	! values inside the equatorial band (ztilde as zstar)
	249	frq_rst_e3t(ji,jj) = 0.0_wp
	250	frq_rst_hdv(ji,jj) = 1.0_wp / rdt
[6140]	251	ELSE ! transition band (2.5 to 6 degrees N/S)
	252	! ! (linearly transition from z-tilde to z-star)
[4292]	253	frq_rst_e3t(ji,jj) = 0.0_wp + (frq_rst_e3t(ji,jj)-0.0_wp)*0.5_wp &
	254	& * ( 1.0_wp - COS( rad*(ABS(gphit(ji,jj))-2.5_wp) &
	255	& * 180._wp / 3.5_wp ) )
	256	frq_rst_hdv(ji,jj) = (1.0_wp / rdt) &
	257	& + ( frq_rst_hdv(ji,jj)-(1.e0_wp / rdt) )*0.5_wp &
	258	& * ( 1._wp - COS( rad*(ABS(gphit(ji,jj))-2.5_wp) &
	259	& * 180._wp / 3.5_wp ) )
	260	ENDIF
	261	END DO
	262	END DO
[10213]	263	IF( cn_cfg == "orca" .OR. cn_cfg == "ORCA" ) THEN
	264	IF( nn_cfg == 3 ) THEN ! ORCA2: Suppress ztilde in the Foxe Basin for ORCA2
	265	ii0 = 103 ; ii1 = 111
	266	ij0 = 128 ; ij1 = 135 ;
	267	frq_rst_e3t( mi0(ii0):mi1(ii1) , mj0(ij0):mj1(ij1) ) = 0.0_wp
	268	frq_rst_hdv( mi0(ii0):mi1(ii1) , mj0(ij0):mj1(ij1) ) = 1.e0_wp / rdt
	269	ENDIF
[4292]	270	ENDIF
	271	ENDIF
	272	ENDIF
[6140]	273	!
[9367]	274	IF(lwxios) THEN
	275	! define variables in restart file when writing with XIOS
	276	CALL iom_set_rstw_var_active('e3t_b')
	277	CALL iom_set_rstw_var_active('e3t_n')
	278	! ! ----------------------- !
	279	IF( ln_vvl_ztilde .OR. ln_vvl_layer ) THEN ! z_tilde and layer cases !
	280	! ! ----------------------- !
	281	CALL iom_set_rstw_var_active('tilde_e3t_b')
	282	CALL iom_set_rstw_var_active('tilde_e3t_n')
	283	END IF
	284	! ! -------------!
	285	IF( ln_vvl_ztilde ) THEN ! z_tilde case !
	286	! ! ------------ !
	287	CALL iom_set_rstw_var_active('hdiv_lf')
	288	ENDIF
	289	!
	290	ENDIF
	291	!
[11823]	292	END SUBROUTINE dom_vvl_zgr
[4292]	293
[4338]	294	SUBROUTINE dom_vvl_sf_nxt( kt, kcall )
[4292]	295	!!----------------------------------------------------------------------
	296	!! * ROUTINE dom_vvl_sf_nxt *
	297	!!
	298	!! ** Purpose : - compute the after scale factors used in tra_zdf, dynnxt,
	299	!! tranxt and dynspg routines
	300	!!
	301	!! ** Method : - z_star case: Repartition of ssh INCREMENT proportionnaly to the level thickness.
	302	!! - z_tilde_case: after scale factor increment =
	303	!! high frequency part of horizontal divergence
	304	!! + retsoring towards the background grid
	305	!! + thickness difusion
	306	!! Then repartition of ssh INCREMENT proportionnaly
	307	!! to the "baroclinic" level thickness.
	308	!!
	309	!! ** Action : - hdiv_lf : restoring towards full baroclinic divergence in z_tilde case
	310	!! - tilde_e3t_a: after increment of vertical scale factor
	311	!! in z_tilde case
[6140]	312	!! - e3(t/u/v)_a
[4292]	313	!!
	314	!! Reference : Leclair, M., and Madec, G. 2011, Ocean Modelling.
	315	!!----------------------------------------------------------------------
[6140]	316	INTEGER, INTENT( in ) :: kt ! time step
	317	INTEGER, INTENT( in ), OPTIONAL :: kcall ! optional argument indicating call sequence
	318	!
	319	INTEGER :: ji, jj, jk ! dummy loop indices
	320	INTEGER , DIMENSION(3) :: ijk_max, ijk_min ! temporary integers
	321	REAL(wp) :: z2dt, z_tmin, z_tmax ! local scalars
	322	LOGICAL :: ll_do_bclinic ! local logical
[9019]	323	REAL(wp), DIMENSION(jpi,jpj) :: zht, z_scale, zwu, zwv, zhdiv
	324	REAL(wp), DIMENSION(jpi,jpj,jpk) :: ze3t
[4292]	325	!!----------------------------------------------------------------------
[6140]	326	!
	327	IF( ln_linssh ) RETURN ! No calculation in linear free surface
	328	!
[9019]	329	IF( ln_timing ) CALL timing_start('dom_vvl_sf_nxt')
[6140]	330	!
	331	IF( kt == nit000 ) THEN
[4292]	332	IF(lwp) WRITE(numout,*)
	333	IF(lwp) WRITE(numout,*) 'dom_vvl_sf_nxt : compute after scale factors'
	334	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~'
	335	ENDIF
	336
[4338]	337	ll_do_bclinic = .TRUE.
	338	IF( PRESENT(kcall) ) THEN
[6140]	339	IF( kcall == 2 .AND. ln_vvl_ztilde ) ll_do_bclinic = .FALSE.
[4338]	340	ENDIF
	341
[4292]	342	! ******************************* !
	343	! After acale factors at t-points !
	344	! ******************************* !
[4338]	345	! ! --------------------------------------------- !
[6140]	346	! ! z_star coordinate and barotropic z-tilde part !
[4338]	347	! ! --------------------------------------------- !
[6140]	348	!
[7753]	349	z_scale(:,:) = ( ssha(:,:) - sshb(:,:) ) * ssmask(:,:) / ( ht_0(:,:) + sshn(:,:) + 1. - ssmask(:,:) )
[4338]	350	DO jk = 1, jpkm1
[7753]	351	! formally this is the same as e3t_a = e3t_0*(1+ssha/ht_0)
	352	e3t_a(:,:,jk) = e3t_b(:,:,jk) + e3t_n(:,:,jk) * z_scale(:,:) * tmask(:,:,jk)
[4338]	353	END DO
[6140]	354	!
[4338]	355	IF( ln_vvl_ztilde .OR. ln_vvl_layer .AND. ll_do_bclinic ) THEN ! z_tilde or layer coordinate !
	356	! ! ------baroclinic part------ !
[4292]	357	! I - initialization
	358	! ==================
	359
	360	! 1 - barotropic divergence
	361	! -------------------------
[7753]	362	zhdiv(:,:) = 0._wp
	363	zht(:,:) = 0._wp
[4292]	364	DO jk = 1, jpkm1
[7753]	365	zhdiv(:,:) = zhdiv(:,:) + e3t_n(:,:,jk) * hdivn(:,:,jk)
	366	zht (:,:) = zht (:,:) + e3t_n(:,:,jk) * tmask(:,:,jk)
[592]	367	END DO
[7753]	368	zhdiv(:,:) = zhdiv(:,:) / ( zht(:,:) + 1. - tmask_i(:,:) )
[2528]	369
[4292]	370	! 2 - Low frequency baroclinic horizontal divergence (z-tilde case only)
	371	! --------------------------------------------------
	372	IF( ln_vvl_ztilde ) THEN
[6140]	373	IF( kt > nit000 ) THEN
[4292]	374	DO jk = 1, jpkm1
[7753]	375	hdiv_lf(:,:,jk) = hdiv_lf(:,:,jk) - rdt * frq_rst_hdv(:,:) &
	376	& * ( hdiv_lf(:,:,jk) - e3t_n(:,:,jk) * ( hdivn(:,:,jk) - zhdiv(:,:) ) )
[4292]	377	END DO
	378	ENDIF
[6140]	379	ENDIF
[3294]	380
[4292]	381	! II - after z_tilde increments of vertical scale factors
	382	! =======================================================
[7753]	383	tilde_e3t_a(:,:,:) = 0._wp ! tilde_e3t_a used to store tendency terms
[4292]	384
	385	! 1 - High frequency divergence term
	386	! ----------------------------------
	387	IF( ln_vvl_ztilde ) THEN ! z_tilde case
	388	DO jk = 1, jpkm1
[7753]	389	tilde_e3t_a(:,:,jk) = tilde_e3t_a(:,:,jk) - ( e3t_n(:,:,jk) * ( hdivn(:,:,jk) - zhdiv(:,:) ) - hdiv_lf(:,:,jk) )
[4292]	390	END DO
	391	ELSE ! layer case
	392	DO jk = 1, jpkm1
[7753]	393	tilde_e3t_a(:,:,jk) = tilde_e3t_a(:,:,jk) - e3t_n(:,:,jk) * ( hdivn(:,:,jk) - zhdiv(:,:) ) * tmask(:,:,jk)
[4292]	394	END DO
[6140]	395	ENDIF
[4292]	396
	397	! 2 - Restoring term (z-tilde case only)
	398	! ------------------
	399	IF( ln_vvl_ztilde ) THEN
	400	DO jk = 1, jpk
[7753]	401	tilde_e3t_a(:,:,jk) = tilde_e3t_a(:,:,jk) - frq_rst_e3t(:,:) * tilde_e3t_b(:,:,jk)
[4292]	402	END DO
[6140]	403	ENDIF
[4292]	404
	405	! 3 - Thickness diffusion term
	406	! ----------------------------
[7753]	407	zwu(:,:) = 0._wp
	408	zwv(:,:) = 0._wp
[6140]	409	DO jk = 1, jpkm1 ! a - first derivative: diffusive fluxes
[4292]	410	DO jj = 1, jpjm1
	411	DO ji = 1, fs_jpim1 ! vector opt.
[5836]	412	un_td(ji,jj,jk) = rn_ahe3 * umask(ji,jj,jk) * e2_e1u(ji,jj) &
	413	& * ( tilde_e3t_b(ji,jj,jk) - tilde_e3t_b(ji+1,jj ,jk) )
	414	vn_td(ji,jj,jk) = rn_ahe3 * vmask(ji,jj,jk) * e1_e2v(ji,jj) &
	415	& * ( tilde_e3t_b(ji,jj,jk) - tilde_e3t_b(ji ,jj+1,jk) )
[4292]	416	zwu(ji,jj) = zwu(ji,jj) + un_td(ji,jj,jk)
	417	zwv(ji,jj) = zwv(ji,jj) + vn_td(ji,jj,jk)
	418	END DO
	419	END DO
	420	END DO
[6140]	421	DO jj = 1, jpj ! b - correction for last oceanic u-v points
[4292]	422	DO ji = 1, jpi
	423	un_td(ji,jj,mbku(ji,jj)) = un_td(ji,jj,mbku(ji,jj)) - zwu(ji,jj)
	424	vn_td(ji,jj,mbkv(ji,jj)) = vn_td(ji,jj,mbkv(ji,jj)) - zwv(ji,jj)
	425	END DO
	426	END DO
[6140]	427	DO jk = 1, jpkm1 ! c - second derivative: divergence of diffusive fluxes
[4292]	428	DO jj = 2, jpjm1
	429	DO ji = fs_2, fs_jpim1 ! vector opt.
	430	tilde_e3t_a(ji,jj,jk) = tilde_e3t_a(ji,jj,jk) + ( un_td(ji-1,jj ,jk) - un_td(ji,jj,jk) &
	431	& + vn_td(ji ,jj-1,jk) - vn_td(ji,jj,jk) &
[5836]	432	& ) * r1_e1e2t(ji,jj)
[4292]	433	END DO
	434	END DO
	435	END DO
[6140]	436	! ! d - thickness diffusion transport: boundary conditions
	437	! (stored for tracer advction and continuity equation)
[10425]	438	CALL lbc_lnk_multi( 'domvvl', un_td , 'U' , -1._wp, vn_td , 'V' , -1._wp)
[4292]	439
	440	! 4 - Time stepping of baroclinic scale factors
	441	! ---------------------------------------------
	442	! Leapfrog time stepping
	443	! ~~~~~~~~~~~~~~~~~~~~~~
	444	IF( neuler == 0 .AND. kt == nit000 ) THEN
	445	z2dt = rdt
	446	ELSE
	447	z2dt = 2.0_wp * rdt
	448	ENDIF
[10425]	449	CALL lbc_lnk( 'domvvl', tilde_e3t_a(:,:,:), 'T', 1._wp )
[7753]	450	tilde_e3t_a(:,:,:) = tilde_e3t_b(:,:,:) + z2dt * tmask(:,:,:) * tilde_e3t_a(:,:,:)
[4292]	451
	452	! Maximum deformation control
	453	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~
[7753]	454	ze3t(:,:,jpk) = 0._wp
[4292]	455	DO jk = 1, jpkm1
[7753]	456	ze3t(:,:,jk) = tilde_e3t_a(:,:,jk) / e3t_0(:,:,jk) * tmask(:,:,jk) * tmask_i(:,:)
[4292]	457	END DO
	458	z_tmax = MAXVAL( ze3t(:,:,:) )
[10425]	459	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[4292]	460	z_tmin = MINVAL( ze3t(:,:,:) )
[10425]	461	CALL mpp_min( 'domvvl', z_tmin ) ! min over the global domain
[4292]	462	! - ML - test: for the moment, stop simulation for too large e3_t variations
[6140]	463	IF( ( z_tmax > rn_zdef_max ) .OR. ( z_tmin < - rn_zdef_max ) ) THEN
[4292]	464	IF( lk_mpp ) THEN
[10425]	465	CALL mpp_maxloc( 'domvvl', ze3t, tmask, z_tmax, ijk_max )
	466	CALL mpp_minloc( 'domvvl', ze3t, tmask, z_tmin, ijk_min )
[4292]	467	ELSE
	468	ijk_max = MAXLOC( ze3t(:,:,:) )
	469	ijk_max(1) = ijk_max(1) + nimpp - 1
	470	ijk_max(2) = ijk_max(2) + njmpp - 1
	471	ijk_min = MINLOC( ze3t(:,:,:) )
	472	ijk_min(1) = ijk_min(1) + nimpp - 1
	473	ijk_min(2) = ijk_min(2) + njmpp - 1
	474	ENDIF
	475	IF (lwp) THEN
	476	WRITE(numout, *) 'MAX( tilde_e3t_a(:,:,:) / e3t_0(:,:,:) ) =', z_tmax
	477	WRITE(numout, *) 'at i, j, k=', ijk_max
	478	WRITE(numout, *) 'MIN( tilde_e3t_a(:,:,:) / e3t_0(:,:,:) ) =', z_tmin
	479	WRITE(numout, *) 'at i, j, k=', ijk_min
[10425]	480	CALL ctl_stop( 'STOP', 'MAX( ABS( tilde_e3t_a(:,:,: ) ) / e3t_0(:,:,:) ) too high')
[4292]	481	ENDIF
	482	ENDIF
	483	! - ML - end test
	484	! - ML - Imposing these limits will cause a baroclinicity error which is corrected for below
[7753]	485	tilde_e3t_a(:,:,:) = MIN( tilde_e3t_a(:,:,:), rn_zdef_max * e3t_0(:,:,:) )
	486	tilde_e3t_a(:,:,:) = MAX( tilde_e3t_a(:,:,:), - rn_zdef_max * e3t_0(:,:,:) )
[4292]	487
[4338]	488	!
	489	! "tilda" change in the after scale factor
[4292]	490	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[4338]	491	DO jk = 1, jpkm1
[7753]	492	dtilde_e3t_a(:,:,jk) = tilde_e3t_a(:,:,jk) - tilde_e3t_b(:,:,jk)
[4338]	493	END DO
[4292]	494	! III - Barotropic repartition of the sea surface height over the baroclinic profile
	495	! ==================================================================================
[4338]	496	! add ( ssh increment + "baroclinicity error" ) proportionly to e3t(n)
[4292]	497	! - ML - baroclinicity error should be better treated in the future
	498	! i.e. locally and not spread over the water column.
	499	! (keep in mind that the idea is to reduce Eulerian velocity as much as possible)
[7753]	500	zht(:,:) = 0.
[4292]	501	DO jk = 1, jpkm1
[7753]	502	zht(:,:) = zht(:,:) + tilde_e3t_a(:,:,jk) * tmask(:,:,jk)
[4292]	503	END DO
[7753]	504	z_scale(:,:) = - zht(:,:) / ( ht_0(:,:) + sshn(:,:) + 1. - ssmask(:,:) )
[4292]	505	DO jk = 1, jpkm1
[7753]	506	dtilde_e3t_a(:,:,jk) = dtilde_e3t_a(:,:,jk) + e3t_n(:,:,jk) * z_scale(:,:) * tmask(:,:,jk)
[4292]	507	END DO
[7753]	508
[4292]	509	ENDIF
	510
[4338]	511	IF( ln_vvl_ztilde .OR. ln_vvl_layer ) THEN ! z_tilde or layer coordinate !
	512	! ! ---baroclinic part--------- !
	513	DO jk = 1, jpkm1
[7753]	514	e3t_a(:,:,jk) = e3t_a(:,:,jk) + dtilde_e3t_a(:,:,jk) * tmask(:,:,jk)
[4338]	515	END DO
	516	ENDIF
	517
	518	IF( ln_vvl_dbg .AND. .NOT. ll_do_bclinic ) THEN ! - ML - test: control prints for debuging
[4292]	519	!
	520	IF( lwp ) WRITE(numout, *) 'kt =', kt
	521	IF ( ln_vvl_ztilde .OR. ln_vvl_layer ) THEN
	522	z_tmax = MAXVAL( tmask(:,:,1) * tmask_i(:,:) * ABS( zht(:,:) ) )
[10425]	523	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[4292]	524	IF( lwp ) WRITE(numout, *) kt,' MAXVAL(abs(SUM(tilde_e3t_a))) =', z_tmax
	525	END IF
	526	!
[7753]	527	zht(:,:) = 0.0_wp
[4292]	528	DO jk = 1, jpkm1
[7753]	529	zht(:,:) = zht(:,:) + e3t_n(:,:,jk) * tmask(:,:,jk)
[4292]	530	END DO
	531	z_tmax = MAXVAL( tmask(:,:,1) * tmask_i(:,:) * ABS( ht_0(:,:) + sshn(:,:) - zht(:,:) ) )
[10425]	532	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[6140]	533	IF( lwp ) WRITE(numout, *) kt,' MAXVAL(abs(ht_0+sshn-SUM(e3t_n))) =', z_tmax
[4292]	534	!
[7753]	535	zht(:,:) = 0.0_wp
[4292]	536	DO jk = 1, jpkm1
[7753]	537	zht(:,:) = zht(:,:) + e3t_a(:,:,jk) * tmask(:,:,jk)
[4292]	538	END DO
	539	z_tmax = MAXVAL( tmask(:,:,1) * tmask_i(:,:) * ABS( ht_0(:,:) + ssha(:,:) - zht(:,:) ) )
[10425]	540	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[6140]	541	IF( lwp ) WRITE(numout, *) kt,' MAXVAL(abs(ht_0+ssha-SUM(e3t_a))) =', z_tmax
[4292]	542	!
[7753]	543	zht(:,:) = 0.0_wp
[4292]	544	DO jk = 1, jpkm1
[7753]	545	zht(:,:) = zht(:,:) + e3t_b(:,:,jk) * tmask(:,:,jk)
[4292]	546	END DO
	547	z_tmax = MAXVAL( tmask(:,:,1) * tmask_i(:,:) * ABS( ht_0(:,:) + sshb(:,:) - zht(:,:) ) )
[10425]	548	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[6140]	549	IF( lwp ) WRITE(numout, *) kt,' MAXVAL(abs(ht_0+sshb-SUM(e3t_b))) =', z_tmax
[4292]	550	!
	551	z_tmax = MAXVAL( tmask(:,:,1) * ABS( sshb(:,:) ) )
[10425]	552	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[4292]	553	IF( lwp ) WRITE(numout, *) kt,' MAXVAL(abs(sshb))) =', z_tmax
	554	!
	555	z_tmax = MAXVAL( tmask(:,:,1) * ABS( sshn(:,:) ) )
[10425]	556	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[4292]	557	IF( lwp ) WRITE(numout, *) kt,' MAXVAL(abs(sshn))) =', z_tmax
	558	!
	559	z_tmax = MAXVAL( tmask(:,:,1) * ABS( ssha(:,:) ) )
[10425]	560	CALL mpp_max( 'domvvl', z_tmax ) ! max over the global domain
[4292]	561	IF( lwp ) WRITE(numout, *) kt,' MAXVAL(abs(ssha))) =', z_tmax
	562	END IF
	563
	564	! *********************************** !
	565	! After scale factors at u- v- points !
	566	! *********************************** !
	567
[6140]	568	CALL dom_vvl_interpol( e3t_a(:,:,:), e3u_a(:,:,:), 'U' )
	569	CALL dom_vvl_interpol( e3t_a(:,:,:), e3v_a(:,:,:), 'V' )
[4292]	570
[4370]	571	! *********************************** !
	572	! After depths at u- v points !
	573	! *********************************** !
	574
[7753]	575	hu_a(:,:) = e3u_a(:,:,1) * umask(:,:,1)
	576	hv_a(:,:) = e3v_a(:,:,1) * vmask(:,:,1)
[6140]	577	DO jk = 2, jpkm1
[7753]	578	hu_a(:,:) = hu_a(:,:) + e3u_a(:,:,jk) * umask(:,:,jk)
	579	hv_a(:,:) = hv_a(:,:) + e3v_a(:,:,jk) * vmask(:,:,jk)
[4370]	580	END DO
	581	! ! Inverse of the local depth
[6140]	582	!!gm BUG ? don't understand the use of umask_i here .....
[7753]	583	r1_hu_a(:,:) = ssumask(:,:) / ( hu_a(:,:) + 1._wp - ssumask(:,:) )
	584	r1_hv_a(:,:) = ssvmask(:,:) / ( hv_a(:,:) + 1._wp - ssvmask(:,:) )
[6140]	585	!
[9019]	586	IF( ln_timing ) CALL timing_stop('dom_vvl_sf_nxt')
[6140]	587	!
[4292]	588	END SUBROUTINE dom_vvl_sf_nxt
	589
	590
	591	SUBROUTINE dom_vvl_sf_swp( kt )
[3294]	592	!!----------------------------------------------------------------------
[4292]	593	!! * ROUTINE dom_vvl_sf_swp *
[3294]	594	!!
[4292]	595	!! ** Purpose : compute time filter and swap of scale factors
	596	!! compute all depths and related variables for next time step
	597	!! write outputs and restart file
[3294]	598	!!
[4292]	599	!! ** Method : - swap of e3t with trick for volume/tracer conservation
	600	!! - reconstruct scale factor at other grid points (interpolate)
	601	!! - recompute depths and water height fields
	602	!!
[6140]	603	!! ** Action : - e3t_(b/n), tilde_e3t_(b/n) and e3(u/v)_n ready for next time step
[4292]	604	!! - Recompute:
[6140]	605	!! e3(u/v)_b
	606	!! e3w_n
	607	!! e3(u/v)w_b
	608	!! e3(u/v)w_n
	609	!! gdept_n, gdepw_n and gde3w_n
[4292]	610	!! h(u/v) and h(u/v)r
	611	!!
	612	!! Reference : Leclair, M., and G. Madec, 2009, Ocean Modelling.
	613	!! Leclair, M., and G. Madec, 2011, Ocean Modelling.
[3294]	614	!!----------------------------------------------------------------------
[6140]	615	INTEGER, INTENT( in ) :: kt ! time step
	616	!
	617	INTEGER :: ji, jj, jk ! dummy loop indices
	618	REAL(wp) :: zcoef ! local scalar
[3294]	619	!!----------------------------------------------------------------------
[6140]	620	!
	621	IF( ln_linssh ) RETURN ! No calculation in linear free surface
	622	!
[9019]	623	IF( ln_timing ) CALL timing_start('dom_vvl_sf_swp')
[3294]	624	!
[4292]	625	IF( kt == nit000 ) THEN
	626	IF(lwp) WRITE(numout,*)
	627	IF(lwp) WRITE(numout,*) 'dom_vvl_sf_swp : - time filter and swap of scale factors'
	628	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~ - interpolate scale factors and compute depths for next time step'
[3294]	629	ENDIF
[4292]	630	!
	631	! Time filter and swap of scale factors
	632	! =====================================
[6140]	633	! - ML - e3(t/u/v)_b are allready computed in dynnxt.
[4292]	634	IF( ln_vvl_ztilde .OR. ln_vvl_layer ) THEN
	635	IF( neuler == 0 .AND. kt == nit000 ) THEN
[7753]	636	tilde_e3t_b(:,:,:) = tilde_e3t_n(:,:,:)
[4292]	637	ELSE
[7753]	638	tilde_e3t_b(:,:,:) = tilde_e3t_n(:,:,:) &
	639	& + atfp * ( tilde_e3t_b(:,:,:) - 2.0_wp * tilde_e3t_n(:,:,:) + tilde_e3t_a(:,:,:) )
[4292]	640	ENDIF
[7753]	641	tilde_e3t_n(:,:,:) = tilde_e3t_a(:,:,:)
[4292]	642	ENDIF
[7753]	643	gdept_b(:,:,:) = gdept_n(:,:,:)
	644	gdepw_b(:,:,:) = gdepw_n(:,:,:)
[4488]	645
[7753]	646	e3t_n(:,:,:) = e3t_a(:,:,:)
	647	e3u_n(:,:,:) = e3u_a(:,:,:)
	648	e3v_n(:,:,:) = e3v_a(:,:,:)
	649
[4292]	650	! Compute all missing vertical scale factor and depths
	651	! ====================================================
	652	! Horizontal scale factor interpolations
	653	! --------------------------------------
[6140]	654	! - ML - e3u_b and e3v_b are allready computed in dynnxt
[4370]	655	! - JC - hu_b, hv_b, hur_b, hvr_b also
[6140]	656
	657	CALL dom_vvl_interpol( e3u_n(:,:,:), e3f_n(:,:,:), 'F' )
	658
[4292]	659	! Vertical scale factor interpolations
[6140]	660	CALL dom_vvl_interpol( e3t_n(:,:,:), e3w_n(:,:,:), 'W' )
	661	CALL dom_vvl_interpol( e3u_n(:,:,:), e3uw_n(:,:,:), 'UW' )
	662	CALL dom_vvl_interpol( e3v_n(:,:,:), e3vw_n(:,:,:), 'VW' )
	663	CALL dom_vvl_interpol( e3t_b(:,:,:), e3w_b(:,:,:), 'W' )
	664	CALL dom_vvl_interpol( e3u_b(:,:,:), e3uw_b(:,:,:), 'UW' )
	665	CALL dom_vvl_interpol( e3v_b(:,:,:), e3vw_b(:,:,:), 'VW' )
[5120]	666
[6140]	667	! t- and w- points depth (set the isf depth as it is in the initial step)
[7753]	668	gdept_n(:,:,1) = 0.5_wp * e3w_n(:,:,1)
	669	gdepw_n(:,:,1) = 0.0_wp
	670	gde3w_n(:,:,1) = gdept_n(:,:,1) - sshn(:,:)
[5120]	671	DO jk = 2, jpk
	672	DO jj = 1,jpj
	673	DO ji = 1,jpi
	674	! zcoef = (tmask(ji,jj,jk) - wmask(ji,jj,jk)) ! 0 everywhere tmask = wmask, ie everywhere expect at jk = mikt
	675	! 1 for jk = mikt
	676	zcoef = (tmask(ji,jj,jk) - wmask(ji,jj,jk))
[6140]	677	gdepw_n(ji,jj,jk) = gdepw_n(ji,jj,jk-1) + e3t_n(ji,jj,jk-1)
	678	gdept_n(ji,jj,jk) = zcoef * ( gdepw_n(ji,jj,jk ) + 0.5 * e3w_n(ji,jj,jk) ) &
	679	& + (1-zcoef) * ( gdept_n(ji,jj,jk-1) + e3w_n(ji,jj,jk) )
	680	gde3w_n(ji,jj,jk) = gdept_n(ji,jj,jk) - sshn(ji,jj)
[4990]	681	END DO
	682	END DO
[4292]	683	END DO
[5120]	684
[6140]	685	! Local depth and Inverse of the local depth of the water
	686	! -------------------------------------------------------
[7753]	687	hu_n(:,:) = hu_a(:,:) ; r1_hu_n(:,:) = r1_hu_a(:,:)
	688	hv_n(:,:) = hv_a(:,:) ; r1_hv_n(:,:) = r1_hv_a(:,:)
	689	!
	690	ht_n(:,:) = e3t_n(:,:,1) * tmask(:,:,1)
[6140]	691	DO jk = 2, jpkm1
[7753]	692	ht_n(:,:) = ht_n(:,:) + e3t_n(:,:,jk) * tmask(:,:,jk)
[4370]	693	END DO
[7753]	694
[4292]	695	! write restart file
	696	! ==================
[9019]	697	IF( lrst_oce ) CALL dom_vvl_rst( kt, 'WRITE' )
[4292]	698	!
[9019]	699	IF( ln_timing ) CALL timing_stop('dom_vvl_sf_swp')
[6140]	700	!
[4292]	701	END SUBROUTINE dom_vvl_sf_swp
	702
	703
	704	SUBROUTINE dom_vvl_interpol( pe3_in, pe3_out, pout )
	705	!!---------------------------------------------------------------------
	706	!! * ROUTINE dom_vvl__interpol *
	707	!!
	708	!! ** Purpose : interpolate scale factors from one grid point to another
	709	!!
	710	!! ** Method : e3_out = e3_0 + interpolation(e3_in - e3_0)
	711	!! - horizontal interpolation: grid cell surface averaging
	712	!! - vertical interpolation: simple averaging
	713	!!----------------------------------------------------------------------
[5836]	714	REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in ) :: pe3_in ! input e3 to be interpolated
	715	REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(inout) :: pe3_out ! output interpolated e3
	716	CHARACTER(LEN=*) , INTENT(in ) :: pout ! grid point of out scale factors
	717	! ! = 'U', 'V', 'W, 'F', 'UW' or 'VW'
	718	!
[6152]	719	INTEGER :: ji, jj, jk ! dummy loop indices
[9023]	720	REAL(wp) :: zlnwd ! =1./0. when ln_wd_il = T/F
[4292]	721	!!----------------------------------------------------------------------
[5836]	722	!
[9023]	723	IF(ln_wd_il) THEN
[6152]	724	zlnwd = 1.0_wp
	725	ELSE
	726	zlnwd = 0.0_wp
	727	END IF
	728	!
[5836]	729	SELECT CASE ( pout ) !== type of interpolation ==!
[4292]	730	!
[5836]	731	CASE( 'U' ) !* from T- to U-point : hor. surface weighted mean
[4292]	732	DO jk = 1, jpk
	733	DO jj = 1, jpjm1
	734	DO ji = 1, fs_jpim1 ! vector opt.
[6152]	735	pe3_out(ji,jj,jk) = 0.5_wp * ( umask(ji,jj,jk) * (1.0_wp - zlnwd) + zlnwd ) * r1_e1e2u(ji,jj) &
[5836]	736	& * ( e1e2t(ji ,jj) * ( pe3_in(ji ,jj,jk) - e3t_0(ji ,jj,jk) ) &
	737	& + e1e2t(ji+1,jj) * ( pe3_in(ji+1,jj,jk) - e3t_0(ji+1,jj,jk) ) )
[4292]	738	END DO
[2528]	739	END DO
	740	END DO
[10425]	741	CALL lbc_lnk( 'domvvl', pe3_out(:,:,:), 'U', 1._wp )
[7753]	742	pe3_out(:,:,:) = pe3_out(:,:,:) + e3u_0(:,:,:)
[5836]	743	!
	744	CASE( 'V' ) !* from T- to V-point : hor. surface weighted mean
[4292]	745	DO jk = 1, jpk
	746	DO jj = 1, jpjm1
	747	DO ji = 1, fs_jpim1 ! vector opt.
[6152]	748	pe3_out(ji,jj,jk) = 0.5_wp * ( vmask(ji,jj,jk) * (1.0_wp - zlnwd) + zlnwd ) * r1_e1e2v(ji,jj) &
[5836]	749	& * ( e1e2t(ji,jj ) * ( pe3_in(ji,jj ,jk) - e3t_0(ji,jj ,jk) ) &
	750	& + e1e2t(ji,jj+1) * ( pe3_in(ji,jj+1,jk) - e3t_0(ji,jj+1,jk) ) )
[4292]	751	END DO
	752	END DO
	753	END DO
[10425]	754	CALL lbc_lnk( 'domvvl', pe3_out(:,:,:), 'V', 1._wp )
[7753]	755	pe3_out(:,:,:) = pe3_out(:,:,:) + e3v_0(:,:,:)
[5836]	756	!
	757	CASE( 'F' ) !* from U-point to F-point : hor. surface weighted mean
[4292]	758	DO jk = 1, jpk
	759	DO jj = 1, jpjm1
	760	DO ji = 1, fs_jpim1 ! vector opt.
[6152]	761	pe3_out(ji,jj,jk) = 0.5_wp * ( umask(ji,jj,jk) * umask(ji,jj+1,jk) * (1.0_wp - zlnwd) + zlnwd ) &
	762	& * r1_e1e2f(ji,jj) &
[5836]	763	& * ( e1e2u(ji,jj ) * ( pe3_in(ji,jj ,jk) - e3u_0(ji,jj ,jk) ) &
	764	& + e1e2u(ji,jj+1) * ( pe3_in(ji,jj+1,jk) - e3u_0(ji,jj+1,jk) ) )
[4292]	765	END DO
	766	END DO
	767	END DO
[10425]	768	CALL lbc_lnk( 'domvvl', pe3_out(:,:,:), 'F', 1._wp )
[7753]	769	pe3_out(:,:,:) = pe3_out(:,:,:) + e3f_0(:,:,:)
[5836]	770	!
	771	CASE( 'W' ) !* from T- to W-point : vertical simple mean
	772	!
[7753]	773	pe3_out(:,:,1) = e3w_0(:,:,1) + pe3_in(:,:,1) - e3t_0(:,:,1)
[5836]	774	! - ML - The use of mask in this formulea enables the special treatment of the last w-point without indirect adressing
	775	!!gm BUG? use here wmask in case of ISF ? to be checked
[4292]	776	DO jk = 2, jpk
[7753]	777	pe3_out(:,:,jk) = e3w_0(:,:,jk) + ( 1.0_wp - 0.5_wp * ( tmask(:,:,jk) * (1.0_wp - zlnwd) + zlnwd ) ) &
	778	& * ( pe3_in(:,:,jk-1) - e3t_0(:,:,jk-1) ) &
	779	& + 0.5_wp * ( tmask(:,:,jk) * (1.0_wp - zlnwd) + zlnwd ) &
	780	& * ( pe3_in(:,:,jk ) - e3t_0(:,:,jk ) )
[4292]	781	END DO
[5836]	782	!
	783	CASE( 'UW' ) !* from U- to UW-point : vertical simple mean
	784	!
[7753]	785	pe3_out(:,:,1) = e3uw_0(:,:,1) + pe3_in(:,:,1) - e3u_0(:,:,1)
[4292]	786	! - ML - The use of mask in this formaula enables the special treatment of the last w- point without indirect adressing
[5836]	787	!!gm BUG? use here wumask in case of ISF ? to be checked
[4292]	788	DO jk = 2, jpk
[7753]	789	pe3_out(:,:,jk) = e3uw_0(:,:,jk) + ( 1.0_wp - 0.5_wp * ( umask(:,:,jk) * (1.0_wp - zlnwd) + zlnwd ) ) &
	790	& * ( pe3_in(:,:,jk-1) - e3u_0(:,:,jk-1) ) &
	791	& + 0.5_wp * ( umask(:,:,jk) * (1.0_wp - zlnwd) + zlnwd ) &
	792	& * ( pe3_in(:,:,jk ) - e3u_0(:,:,jk ) )
[4292]	793	END DO
[5836]	794	!
	795	CASE( 'VW' ) !* from V- to VW-point : vertical simple mean
	796	!
[7753]	797	pe3_out(:,:,1) = e3vw_0(:,:,1) + pe3_in(:,:,1) - e3v_0(:,:,1)
[4292]	798	! - ML - The use of mask in this formaula enables the special treatment of the last w- point without indirect adressing
[5836]	799	!!gm BUG? use here wvmask in case of ISF ? to be checked
[4292]	800	DO jk = 2, jpk
[7753]	801	pe3_out(:,:,jk) = e3vw_0(:,:,jk) + ( 1.0_wp - 0.5_wp * ( vmask(:,:,jk) * (1.0_wp - zlnwd) + zlnwd ) ) &
	802	& * ( pe3_in(:,:,jk-1) - e3v_0(:,:,jk-1) ) &
	803	& + 0.5_wp * ( vmask(:,:,jk) * (1.0_wp - zlnwd) + zlnwd ) &
	804	& * ( pe3_in(:,:,jk ) - e3v_0(:,:,jk ) )
[4292]	805	END DO
	806	END SELECT
	807	!
	808	END SUBROUTINE dom_vvl_interpol
	809
[5836]	810
[4292]	811	SUBROUTINE dom_vvl_rst( kt, cdrw )
	812	!!---------------------------------------------------------------------
	813	!! * ROUTINE dom_vvl_rst *
	814	!!
	815	!! ** Purpose : Read or write VVL file in restart file
	816	!!
	817	!! ** Method : use of IOM library
	818	!! if the restart does not contain vertical scale factors,
	819	!! they are set to the _0 values
	820	!! if the restart does not contain vertical scale factors increments (z_tilde),
	821	!! they are set to 0.
	822	!!----------------------------------------------------------------------
	823	INTEGER , INTENT(in) :: kt ! ocean time-step
	824	CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag
[5836]	825	!
[6152]	826	INTEGER :: ji, jj, jk
[4292]	827	INTEGER :: id1, id2, id3, id4, id5 ! local integers
	828	!!----------------------------------------------------------------------
	829	!
	830	IF( TRIM(cdrw) == 'READ' ) THEN ! Read/initialise
	831	! ! ===============
	832	IF( ln_rstart ) THEN !* Read the restart file
	833	CALL rst_read_open ! open the restart file if necessary
[9367]	834	CALL iom_get( numror, jpdom_autoglo, 'sshn' , sshn, ldxios = lrxios )
[4366]	835	!
[6140]	836	id1 = iom_varid( numror, 'e3t_b', ldstop = .FALSE. )
	837	id2 = iom_varid( numror, 'e3t_n', ldstop = .FALSE. )
[4292]	838	id3 = iom_varid( numror, 'tilde_e3t_b', ldstop = .FALSE. )
	839	id4 = iom_varid( numror, 'tilde_e3t_n', ldstop = .FALSE. )
[4795]	840	id5 = iom_varid( numror, 'hdiv_lf', ldstop = .FALSE. )
[11423]	841	!
[4292]	842	! ! --------- !
	843	! ! all cases !
	844	! ! --------- !
[11823]	845	!
[4292]	846	IF( MIN( id1, id2 ) > 0 ) THEN ! all required arrays exist
[9367]	847	CALL iom_get( numror, jpdom_autoglo, 'e3t_b', e3t_b(:,:,:), ldxios = lrxios )
	848	CALL iom_get( numror, jpdom_autoglo, 'e3t_n', e3t_n(:,:,:), ldxios = lrxios )
[4990]	849	! needed to restart if land processor not computed
[6140]	850	IF(lwp) write(numout,*) 'dom_vvl_rst : e3t_b and e3t_n found in restart files'
[4990]	851	WHERE ( tmask(:,:,:) == 0.0_wp )
[6140]	852	e3t_n(:,:,:) = e3t_0(:,:,:)
	853	e3t_b(:,:,:) = e3t_0(:,:,:)
[4990]	854	END WHERE
[4292]	855	IF( neuler == 0 ) THEN
[6140]	856	e3t_b(:,:,:) = e3t_n(:,:,:)
[4292]	857	ENDIF
	858	ELSE IF( id1 > 0 ) THEN
[6140]	859	IF(lwp) write(numout,*) 'dom_vvl_rst WARNING : e3t_n not found in restart files'
	860	IF(lwp) write(numout,*) 'e3t_n set equal to e3t_b.'
[4990]	861	IF(lwp) write(numout,*) 'neuler is forced to 0'
[9367]	862	CALL iom_get( numror, jpdom_autoglo, 'e3t_b', e3t_b(:,:,:), ldxios = lrxios )
[6140]	863	e3t_n(:,:,:) = e3t_b(:,:,:)
[4990]	864	neuler = 0
	865	ELSE IF( id2 > 0 ) THEN
[6140]	866	IF(lwp) write(numout,*) 'dom_vvl_rst WARNING : e3t_b not found in restart files'
	867	IF(lwp) write(numout,*) 'e3t_b set equal to e3t_n.'
[4490]	868	IF(lwp) write(numout,*) 'neuler is forced to 0'
[9367]	869	CALL iom_get( numror, jpdom_autoglo, 'e3t_n', e3t_n(:,:,:), ldxios = lrxios )
[6140]	870	e3t_b(:,:,:) = e3t_n(:,:,:)
[4490]	871	neuler = 0
	872	ELSE
[6140]	873	IF(lwp) write(numout,*) 'dom_vvl_rst WARNING : e3t_n not found in restart file'
[4490]	874	IF(lwp) write(numout,*) 'Compute scale factor from sshn'
	875	IF(lwp) write(numout,*) 'neuler is forced to 0'
[6140]	876	DO jk = 1, jpk
	877	e3t_n(:,:,jk) = e3t_0(:,:,jk) * ( ht_0(:,:) + sshn(:,:) ) &
	878	& / ( ht_0(:,:) + 1._wp - ssmask(:,:) ) * tmask(:,:,jk) &
	879	& + e3t_0(:,:,jk) * (1._wp -tmask(:,:,jk))
[4490]	880	END DO
[6140]	881	e3t_b(:,:,:) = e3t_n(:,:,:)
[4490]	882	neuler = 0
[4292]	883	ENDIF
	884	! ! ----------- !
	885	IF( ln_vvl_zstar ) THEN ! z_star case !
	886	! ! ----------- !
	887	IF( MIN( id3, id4 ) > 0 ) THEN
	888	CALL ctl_stop( 'dom_vvl_rst: z_star cannot restart from a z_tilde or layer run' )
	889	ENDIF
	890	! ! ----------------------- !
	891	ELSE ! z_tilde and layer cases !
	892	! ! ----------------------- !
	893	IF( MIN( id3, id4 ) > 0 ) THEN ! all required arrays exist
[9367]	894	CALL iom_get( numror, jpdom_autoglo, 'tilde_e3t_b', tilde_e3t_b(:,:,:), ldxios = lrxios )
	895	CALL iom_get( numror, jpdom_autoglo, 'tilde_e3t_n', tilde_e3t_n(:,:,:), ldxios = lrxios )
[4292]	896	ELSE ! one at least array is missing
	897	tilde_e3t_b(:,:,:) = 0.0_wp
	898	tilde_e3t_n(:,:,:) = 0.0_wp
	899	ENDIF
	900	! ! ------------ !
	901	IF( ln_vvl_ztilde ) THEN ! z_tilde case !
	902	! ! ------------ !
	903	IF( id5 > 0 ) THEN ! required array exists
[9367]	904	CALL iom_get( numror, jpdom_autoglo, 'hdiv_lf', hdiv_lf(:,:,:), ldxios = lrxios )
[4292]	905	ELSE ! array is missing
	906	hdiv_lf(:,:,:) = 0.0_wp
	907	ENDIF
	908	ENDIF
	909	ENDIF
	910	!
	911	ELSE !* Initialize at "rest"
[7646]	912	!
[9023]	913
	914	IF( ll_wd ) THEN ! MJB ll_wd edits start here - these are essential
	915	!
	916	IF( cn_cfg == 'wad' ) THEN
	917	! Wetting and drying test case
	918	CALL usr_def_istate( gdept_b, tmask, tsb, ub, vb, sshb )
	919	tsn (:,:,:,:) = tsb (:,:,:,:) ! set now values from to before ones
	920	sshn (:,:) = sshb(:,:)
	921	un (:,:,:) = ub (:,:,:)
	922	vn (:,:,:) = vb (:,:,:)
	923	ELSE
	924	! if not test case
	925	sshn(:,:) = -ssh_ref
	926	sshb(:,:) = -ssh_ref
	927
	928	DO jj = 1, jpj
	929	DO ji = 1, jpi
	930	IF( ht_0(ji,jj)-ssh_ref < rn_wdmin1 ) THEN ! if total depth is less than min depth
	931
	932	sshb(ji,jj) = rn_wdmin1 - (ht_0(ji,jj) )
	933	sshn(ji,jj) = rn_wdmin1 - (ht_0(ji,jj) )
	934	ssha(ji,jj) = rn_wdmin1 - (ht_0(ji,jj) )
	935	ENDIF
	936	ENDDO
	937	ENDDO
	938	ENDIF !If test case else
	939
	940	! Adjust vertical metrics for all wad
[7646]	941	DO jk = 1, jpk
[9023]	942	e3t_n(:,:,jk) = e3t_0(:,:,jk) * ( ht_0(:,:) + sshn(:,:) ) &
[7646]	943	& / ( ht_0(:,:) + 1._wp - ssmask(:,:) ) * tmask(:,:,jk) &
[9023]	944	& + e3t_0(:,:,jk) * ( 1._wp - tmask(:,:,jk) )
[7646]	945	END DO
	946	e3t_b(:,:,:) = e3t_n(:,:,:)
[9023]	947
	948	DO ji = 1, jpi
	949	DO jj = 1, jpj
	950	IF ( ht_0(ji,jj) .LE. 0.0 .AND. NINT( ssmask(ji,jj) ) .EQ. 1) THEN
	951	CALL ctl_stop( 'dom_vvl_rst: ht_0 must be positive at potentially wet points' )
	952	ENDIF
	953	END DO
	954	END DO
[7646]	955	!
	956	ELSE
	957	!
[9059]	958	! Just to read set ssh in fact, called latter once vertical grid
	959	! is set up:
[9065]	960	! CALL usr_def_istate( gdept_0, tmask, tsb, ub, vb, sshb )
	961	! !
	962	! DO jk=1,jpk
	963	! e3t_b(:,:,jk) = e3t_0(:,:,jk) * ( ht_0(:,:) + sshb(:,:) ) &
	964	! & / ( ht_0(:,:) + 1._wp -ssmask(:,:) ) * tmask(:,:,jk)
	965	! END DO
	966	! e3t_n(:,:,:) = e3t_b(:,:,:)
	967	sshn(:,:)=0._wp
	968	e3t_n(:,:,:)=e3t_0(:,:,:)
	969	e3t_b(:,:,:)=e3t_0(:,:,:)
[7646]	970	!
[9023]	971	END IF ! end of ll_wd edits
[6152]	972
[4292]	973	IF( ln_vvl_ztilde .OR. ln_vvl_layer) THEN
[7646]	974	tilde_e3t_b(:,:,:) = 0._wp
	975	tilde_e3t_n(:,:,:) = 0._wp
	976	IF( ln_vvl_ztilde ) hdiv_lf(:,:,:) = 0._wp
[4292]	977	END IF
	978	ENDIF
[5836]	979	!
[4292]	980	ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN ! Create restart file
	981	! ! ===================
	982	IF(lwp) WRITE(numout,*) '---- dom_vvl_rst ----'
[9367]	983	IF( lwxios ) CALL iom_swap( cwxios_context )
[4292]	984	! ! --------- !
	985	! ! all cases !
	986	! ! --------- !
[9367]	987	CALL iom_rstput( kt, nitrst, numrow, 'e3t_b', e3t_b(:,:,:), ldxios = lwxios )
	988	CALL iom_rstput( kt, nitrst, numrow, 'e3t_n', e3t_n(:,:,:), ldxios = lwxios )
[4292]	989	! ! ----------------------- !
	990	IF( ln_vvl_ztilde .OR. ln_vvl_layer ) THEN ! z_tilde and layer cases !
	991	! ! ----------------------- !
[9367]	992	CALL iom_rstput( kt, nitrst, numrow, 'tilde_e3t_b', tilde_e3t_b(:,:,:), ldxios = lwxios)
	993	CALL iom_rstput( kt, nitrst, numrow, 'tilde_e3t_n', tilde_e3t_n(:,:,:), ldxios = lwxios)
[4292]	994	END IF
	995	! ! -------------!
	996	IF( ln_vvl_ztilde ) THEN ! z_tilde case !
	997	! ! ------------ !
[9367]	998	CALL iom_rstput( kt, nitrst, numrow, 'hdiv_lf', hdiv_lf(:,:,:), ldxios = lwxios)
[4292]	999	ENDIF
[5836]	1000	!
[9367]	1001	IF( lwxios ) CALL iom_swap( cxios_context )
[4292]	1002	ENDIF
[5836]	1003	!
[4292]	1004	END SUBROUTINE dom_vvl_rst
	1005
	1006
	1007	SUBROUTINE dom_vvl_ctl
	1008	!!---------------------------------------------------------------------
	1009	!! * ROUTINE dom_vvl_ctl *
	1010	!!
	1011	!! ** Purpose : Control the consistency between namelist options
	1012	!! for vertical coordinate
	1013	!!----------------------------------------------------------------------
[5836]	1014	INTEGER :: ioptio, ios
	1015	!!
[4292]	1016	NAMELIST/nam_vvl/ ln_vvl_zstar, ln_vvl_ztilde, ln_vvl_layer, ln_vvl_ztilde_as_zstar, &
[5836]	1017	& ln_vvl_zstar_at_eqtor , rn_ahe3 , rn_rst_e3t , &
	1018	& rn_lf_cutoff , rn_zdef_max , ln_vvl_dbg ! not yet implemented: ln_vvl_kepe
[4292]	1019	!!----------------------------------------------------------------------
[5836]	1020	!
[4294]	1021	REWIND( numnam_ref ) ! Namelist nam_vvl in reference namelist :
	1022	READ ( numnam_ref, nam_vvl, IOSTAT = ios, ERR = 901)
[9168]	1023	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nam_vvl in reference namelist', lwp )
[4294]	1024	REWIND( numnam_cfg ) ! Namelist nam_vvl in configuration namelist : Parameters of the run
	1025	READ ( numnam_cfg, nam_vvl, IOSTAT = ios, ERR = 902 )
[9168]	1026	902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nam_vvl in configuration namelist', lwp )
[4624]	1027	IF(lwm) WRITE ( numond, nam_vvl )
[5836]	1028	!
[4292]	1029	IF(lwp) THEN ! Namelist print
	1030	WRITE(numout,*)
	1031	WRITE(numout,*) 'dom_vvl_ctl : choice/control of the variable vertical coordinate'
	1032	WRITE(numout,*) '~~~~~~~~~~~'
[9168]	1033	WRITE(numout,*) ' Namelist nam_vvl : chose a vertical coordinate'
	1034	WRITE(numout,*) ' zstar ln_vvl_zstar = ', ln_vvl_zstar
	1035	WRITE(numout,*) ' ztilde ln_vvl_ztilde = ', ln_vvl_ztilde
	1036	WRITE(numout,*) ' layer ln_vvl_layer = ', ln_vvl_layer
	1037	WRITE(numout,*) ' ztilde as zstar ln_vvl_ztilde_as_zstar = ', ln_vvl_ztilde_as_zstar
[4292]	1038	WRITE(numout,*) ' ztilde near the equator ln_vvl_zstar_at_eqtor = ', ln_vvl_zstar_at_eqtor
[9168]	1039	WRITE(numout,*) ' !'
	1040	WRITE(numout,*) ' thickness diffusion coefficient rn_ahe3 = ', rn_ahe3
	1041	WRITE(numout,*) ' maximum e3t deformation fractional change rn_zdef_max = ', rn_zdef_max
[4292]	1042	IF( ln_vvl_ztilde_as_zstar ) THEN
[9168]	1043	WRITE(numout,*) ' ztilde running in zstar emulation mode (ln_vvl_ztilde_as_zstar=T) '
	1044	WRITE(numout,*) ' ignoring namelist timescale parameters and using:'
	1045	WRITE(numout,*) ' hard-wired : z-tilde to zstar restoration timescale (days)'
	1046	WRITE(numout,*) ' rn_rst_e3t = 0.e0'
	1047	WRITE(numout,*) ' hard-wired : z-tilde cutoff frequency of low-pass filter (days)'
	1048	WRITE(numout,*) ' rn_lf_cutoff = 1.0/rdt'
[4292]	1049	ELSE
[9168]	1050	WRITE(numout,*) ' z-tilde to zstar restoration timescale (days) rn_rst_e3t = ', rn_rst_e3t
	1051	WRITE(numout,*) ' z-tilde cutoff frequency of low-pass filter (days) rn_lf_cutoff = ', rn_lf_cutoff
[4292]	1052	ENDIF
[9168]	1053	WRITE(numout,*) ' debug prints flag ln_vvl_dbg = ', ln_vvl_dbg
[4292]	1054	ENDIF
[5836]	1055	!
[4292]	1056	ioptio = 0 ! Parameter control
[5836]	1057	IF( ln_vvl_ztilde_as_zstar ) ln_vvl_ztilde = .true.
	1058	IF( ln_vvl_zstar ) ioptio = ioptio + 1
	1059	IF( ln_vvl_ztilde ) ioptio = ioptio + 1
	1060	IF( ln_vvl_layer ) ioptio = ioptio + 1
	1061	!
[4292]	1062	IF( ioptio /= 1 ) CALL ctl_stop( 'Choose ONE vertical coordinate in namelist nam_vvl' )
[5836]	1063	!
[4292]	1064	IF(lwp) THEN ! Print the choice
	1065	WRITE(numout,*)
[9168]	1066	IF( ln_vvl_zstar ) WRITE(numout,*) ' ==>>> zstar vertical coordinate is used'
	1067	IF( ln_vvl_ztilde ) WRITE(numout,*) ' ==>>> ztilde vertical coordinate is used'
	1068	IF( ln_vvl_layer ) WRITE(numout,*) ' ==>>> layer vertical coordinate is used'
	1069	IF( ln_vvl_ztilde_as_zstar ) WRITE(numout,*) ' ==>>> to emulate a zstar coordinate'
[4292]	1070	ENDIF
[5836]	1071	!
[4486]	1072	#if defined key_agrif
[9190]	1073	IF( (.NOT.Agrif_Root()).AND.(.NOT.ln_vvl_zstar) ) CALL ctl_stop( 'AGRIF is implemented with zstar coordinate only' )
[4486]	1074	#endif
[5836]	1075	!
[4292]	1076	END SUBROUTINE dom_vvl_ctl
	1077
[592]	1078	!!======================================================================
	1079	END MODULE domvvl

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