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limrhg_2.F90 in branches/2011/dev_r2802_LOCEAN10_agrif_lim/NEMOGCM/NEMO/LIM_SRC_2 – NEMO

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source: branches/2011/dev_r2802_LOCEAN10_agrif_lim/NEMOGCM/NEMO/LIM_SRC_2/limrhg_2.F90 @ 2804

Last change on this file since 2804 was 2804, checked in by rblod, 13 years ago
dev_r2802_LOCEAN10_agrif_lim: first implementation see ticket #848
Property svn:keywords set to `Id`
File size: 35.2 KB

Rev	Line
[821]	1	MODULE limrhg_2
[3]	2	!!======================================================================
[821]	3	!! * MODULE limrhg_2 *
[3]	4	!! Ice rheology : performs sea ice rheology
	5	!!======================================================================
[2528]	6	!! History : 0.0 ! 1993-12 (M.A. Morales Maqueda.) Original code
	7	!! 1.0 ! 1994-12 (H. Goosse)
	8	!! 2.0 ! 2003-12 (C. Ethe, G. Madec) F90, mpp
	9	!! - ! 2006-08 (G. Madec) surface module, ice-stress at I-point
	10	!! - ! 2009-09 (G. Madec) Huge verctor optimisation
	11	!! 3.3 ! 2009-05 (G.Garric, C. Bricaud) addition of the lim2_evp case
[888]	12	!!----------------------------------------------------------------------
[2528]	13	#if defined key_lim2 && defined key_lim2_vp
[3]	14	!!----------------------------------------------------------------------
[2528]	15	!! 'key_lim2' AND LIM-2 sea-ice model
	16	!! 'key_lim2_vp' VP ice rheology
[77]	17	!!----------------------------------------------------------------------
[821]	18	!! lim_rhg_2 : computes ice velocities
[3]	19	!!----------------------------------------------------------------------
[888]	20	USE par_oce ! ocean parameter
[1711]	21	USE dom_oce ! ocean space and time domain
	22	USE sbc_oce ! surface boundary condition: ocean variables
[888]	23	USE sbc_ice ! surface boundary condition: ice variables
[2528]	24	USE dom_ice_2 ! LIM2: ice domain
[888]	25	USE phycst ! physical constant
[2528]	26	USE ice_2 ! LIM2: ice variables
	27	USE lbclnk ! lateral boundary condition - MPP exchanges
[888]	28	USE lib_mpp ! MPP library
	29	USE in_out_manager ! I/O manager
	30	USE prtctl ! Print control
[2804]	31	#if defined key_agrif
	32	USE agrif_lim2_interp ! nesting
	33	#endif
[3]	34
	35	IMPLICIT NONE
	36	PRIVATE
	37
[2715]	38	PUBLIC lim_rhg_2 ! routine called by lim_dyn
	39	PUBLIC lim_rhg_alloc_2 ! routine called by lim_dyn_alloc_2
[3]	40
[2528]	41	REAL(wp) :: rzero = 0._wp ! constant value: zero
	42	REAL(wp) :: rone = 1._wp ! and one
[888]	43
[2715]	44	! 2D workspaces for lim_rhg_2. Can't use wrk_nemo module for them because
	45	! extent in 2nd dimension is > jpj.
	46	REAL(wp), SAVE, ALLOCATABLE, DIMENSION(:,:) :: zu0, zv0
	47	REAL(wp), SAVE, ALLOCATABLE, DIMENSION(:,:) :: zu_n, zv_n
	48	REAL(wp), SAVE, ALLOCATABLE, DIMENSION(:,:) :: zu_a, zv_a
	49	REAL(wp), SAVE, ALLOCATABLE, DIMENSION(:,:) :: zviszeta, zviseta
	50	REAL(wp), SAVE, ALLOCATABLE, DIMENSION(:,:) :: zzfrld, zztms
	51	REAL(wp), SAVE, ALLOCATABLE, DIMENSION(:,:) :: zi1, zi2, zmasst, zpresh
	52
[888]	53	!! * Substitutions
	54	# include "vectopt_loop_substitute.h90"
[3]	55	!!----------------------------------------------------------------------
[2528]	56	!! NEMO/LIM2 3.3 , UCL - NEMO Consortium (2010)
[1156]	57	!! $Id$
[2528]	58	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[3]	59	!!----------------------------------------------------------------------
	60	CONTAINS
	61
[2715]	62	INTEGER FUNCTION lim_rhg_alloc_2()
	63	!!-------------------------------------------------------------------
	64	!! * FUNCTION lim_rhg_alloc_2 *
	65	!!-------------------------------------------------------------------
	66	ALLOCATE( zu0(jpi,0:jpj+1), zv0(jpi,0:jpj+1), &
	67	& zu_n(jpi,0:jpj+1), zv_n(jpi,0:jpj+1), &
	68	& zu_a(jpi,0:jpj+1), zv_a(jpi,0:jpj+1), &
	69	& zviszeta(jpi,0:jpj+1), zviseta(jpi,0:jpj+1), &
	70	& zzfrld(jpi,0:jpj+1), zztms(jpi,0:jpj+1), &
	71	& zi1(jpi,0:jpj+1), zi2(jpi,0:jpj+1), &
	72	& zmasst(jpi,0:jpj+1), zpresh(jpi,0:jpj+1), &
	73	& Stat=lim_rhg_alloc_2)
	74	!
	75	IF( lim_rhg_alloc_2 /= 0 ) CALL ctl_warn('lim_rhg_alloc_2 : failed to allocate arrays')
	76	!
	77	END FUNCTION lim_rhg_alloc_2
	78
	79
[821]	80	SUBROUTINE lim_rhg_2( k_j1, k_jpj )
[3]	81	!!-------------------------------------------------------------------
[821]	82	!! * SUBROUTINR lim_rhg_2 *
[77]	83	!!
[12]	84	!! ** purpose : determines the velocity field of sea ice by using
	85	!! atmospheric (wind stress) and oceanic (water stress and surface
	86	!! tilt) forcings. Ice-ice interaction is described by a non-linear
[391]	87	!! viscous-plastic law including shear strength and a bulk rheology.
[3]	88	!!
[1470]	89	!! ** Action : - compute u_ice, v_ice the sea-ice velocity defined
[888]	90	!! at I-point
	91	!!-------------------------------------------------------------------
[2715]	92	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released
	93	USE wrk_nemo, ONLY: zfrld => wrk_2d_1, zmass => wrk_2d_2, zcorl => wrk_2d_3
	94	USE wrk_nemo, ONLY: za1ct => wrk_2d_4, za2ct => wrk_2d_5, zresr => wrk_2d_6
	95	USE wrk_nemo, ONLY: zc1u => wrk_2d_7, zc1v => wrk_2d_8, zc2u => wrk_2d_9
	96	USE wrk_nemo, ONLY: zc2v => wrk_2d_10, zsang => wrk_2d_11
	97	!!
[888]	98	INTEGER, INTENT(in) :: k_j1 ! southern j-index for ice computation
	99	INTEGER, INTENT(in) :: k_jpj ! northern j-index for ice computation
[719]	100	!!
[12]	101	INTEGER :: ji, jj ! dummy loop indices
[888]	102	INTEGER :: iter, jter ! temporary integers
	103	CHARACTER (len=50) :: charout
[2528]	104	REAL(wp) :: ze11 , ze12 , ze22 , ze21 ! local scalars
	105	REAL(wp) :: zt11 , zt12 , zt21 , zt22 ! - -
	106	REAL(wp) :: zvis11, zvis21, zvis12, zvis22 ! - -
	107	REAL(wp) :: zgphsx, ztagnx, zgsshx, zunw, zur, zusw ! - -
	108	REAL(wp) :: zgphsy, ztagny, zgsshy, zvnw, zvr ! - -
[888]	109	REAL(wp) :: zresm, za, zac, zmod
	110	REAL(wp) :: zmpzas, zstms, zindu, zusdtp, zmassdt, zcorlal
	111	REAL(wp) :: ztrace2, zdeter, zdelta, zmask, zdgp, zdgi, zdiag
	112	REAL(wp) :: za1, zb1, zc1, zd1
	113	REAL(wp) :: za2, zb2, zc2, zd2, zden
	114	REAL(wp) :: zs11_11, zs11_12, zs11_21, zs11_22
	115	REAL(wp) :: zs12_11, zs12_12, zs12_21, zs12_22
	116	REAL(wp) :: zs21_11, zs21_12, zs21_21, zs21_22
	117	REAL(wp) :: zs22_11, zs22_12, zs22_21, zs22_22
	118	!!-------------------------------------------------------------------
[3]	119
[77]	120	! Store initial velocities
[888]	121	! ----------------
[2528]	122	zztms(:,0 ) = 0._wp ; zzfrld(:,0 ) = 0._wp
	123	zztms(:,jpj+1) = 0._wp ; zzfrld(:,jpj+1) = 0._wp
	124	zu0 (:,0 ) = 0._wp ; zv0 (:,0 ) = 0._wp
	125	zu0 (:,jpj+1) = 0._wp ; zv0 (:,jpj+1) = 0._wp
	126	zztms(:,1:jpj) = tms (:,:) ; zzfrld(:,1:jpj) = frld (:,:)
	127	zu0 (:,1:jpj) = u_ice(:,:) ; zv0 (:,1:jpj) = v_ice(:,:)
	128	zu_a (:, : ) = zu0 (:,:) ; zv_a (:, : ) = zv0 (:,:)
	129	zu_n (:, : ) = zu0 (:,:) ; zv_n (:, : ) = zv0 (:,:)
[3]	130
[888]	131	!i
[2528]	132	zi1 (:,:) = 0._wp
	133	zi2 (:,:) = 0._wp
	134	zpresh(:,:) = 0._wp
	135	zmasst(:,:) = 0._wp
[888]	136	!i
	137	!!gm violant
[2528]	138	zfrld(:,:) =0._wp
	139	zcorl(:,:) =0._wp
	140	zmass(:,:) =0._wp
	141	za1ct(:,:) =0._wp
	142	za2ct(:,:) =0._wp
[888]	143	!!gm end
	144
[2528]	145	zviszeta(:,:) = 0._wp
	146	zviseta (:,:) = 0._wp
[888]	147
[2528]	148	!i zviszeta(:,0 ) = 0._wp ; zviseta(:,0 ) = 0._wp
	149	!i zviszeta(:,jpj ) = 0._wp ; zviseta(:,jpj ) = 0._wp
	150	!i zviszeta(:,jpj+1) = 0._wp ; zviseta(:,jpj+1) = 0._wp
[888]	151
[2804]	152	#if defined key_agrif
	153	! load the boundary value of velocity in special array zuive and zvice
	154	CALL Agrif_dyn_lim2_load
	155	#endif
[888]	156
[717]	157	! Ice mass, ice strength, and wind stress at the center \|
	158	! of the grid squares. \|
[77]	159	!-------------------------------------------------------------------
[3]	160
[888]	161	!CDIR NOVERRCHK
[77]	162	DO jj = k_j1 , k_jpj-1
[888]	163	!CDIR NOVERRCHK
[3]	164	DO ji = 1 , jpi
[888]	165	! only the sinus changes its sign with the hemisphere
[2528]	166	zsang(ji,jj) = SIGN( 1._wp, fcor(ji,jj) ) * sangvg ! only the sinus changes its sign with the hemisphere
[888]	167	!
	168	zmasst(ji,jj) = tms(ji,jj) * ( rhosn * hsnm(ji,jj) + rhoic * hicm(ji,jj) )
[3]	169	zpresh(ji,jj) = tms(ji,jj) * pstarh * hicm(ji,jj) * EXP( -c_rhg * frld(ji,jj) )
[888]	170	!!gm :: stress given at I-point (F-point for the ocean) only compute the ponderation with the ice fraction (1-frld)
[2528]	171	zi1(ji,jj) = tms(ji,jj) * ( 1._wp - frld(ji,jj) )
	172	zi2(ji,jj) = tms(ji,jj) * ( 1._wp - frld(ji,jj) )
[3]	173	END DO
	174	END DO
	175
[717]	176
[3]	177	!---------------------------------------------------------------------------
[717]	178	! Wind stress, coriolis and mass terms at the corners of the grid squares \|
	179	! Gradient of ice strenght. \|
	180	!---------------------------------------------------------------------------
[3]	181
[77]	182	DO jj = k_j1+1, k_jpj-1
[1774]	183	DO ji = 2, jpi ! NO vector opt.
[888]	184	zstms = zztms(ji,jj ) * wght(ji,jj,2,2) + zztms(ji-1,jj ) * wght(ji,jj,1,2) &
	185	& + zztms(ji,jj-1) * wght(ji,jj,2,1) + zztms(ji-1,jj-1) * wght(ji,jj,1,1)
[2528]	186	zusw = 1._wp / MAX( zstms, epsd )
[3]	187
[888]	188	zt11 = zztms(ji ,jj ) * zzfrld(ji ,jj )
	189	zt12 = zztms(ji-1,jj ) * zzfrld(ji-1,jj )
	190	zt21 = zztms(ji ,jj-1) * zzfrld(ji ,jj-1)
	191	zt22 = zztms(ji-1,jj-1) * zzfrld(ji-1,jj-1)
[3]	192
[717]	193	! Leads area.
	194	zfrld(ji,jj) = ( zt11 * wght(ji,jj,2,2) + zt12 * wght(ji,jj,1,2) &
	195	& + zt21 * wght(ji,jj,2,1) + zt22 * wght(ji,jj,1,1) ) * zusw
[3]	196
[888]	197	! Mass and coriolis coeff. at I-point
	198	zmass(ji,jj) = ( zmasst(ji,jj ) * wght(ji,jj,2,2) + zmasst(ji-1,jj ) * wght(ji,jj,1,2) &
	199	& + zmasst(ji,jj-1) * wght(ji,jj,2,1) + zmasst(ji-1,jj-1) * wght(ji,jj,1,1) ) * zusw
[1569]	200	zcorl(ji,jj) = zmass(ji,jj) &
	201	& ( fcor(ji,jj ) wght(ji,jj,2,2) + fcor(ji-1,jj )*wght(ji,jj,1,2) &
	202	& + fcor(ji,jj-1) * wght(ji,jj,2,1) + fcor(ji-1,jj-1)wght(ji,jj,1,1) ) zusw
[717]	203
[700]	204	! Wind stress.
[1469]	205	! always provide stress at I-point
[888]	206	ztagnx = ( zi1(ji,jj ) * wght(ji,jj,2,2) + zi1(ji-1,jj ) * wght(ji,jj,1,2) &
[1469]	207	& + zi1(ji,jj-1) * wght(ji,jj,2,1) + zi1(ji-1,jj-1) * wght(ji,jj,1,1) ) * zusw * utau_ice(ji,jj)
[888]	208	ztagny = ( zi2(ji,jj ) * wght(ji,jj,2,2) + zi2(ji-1,jj ) * wght(ji,jj,1,2) &
[1469]	209	& + zi2(ji,jj-1) * wght(ji,jj,2,1) + zi2(ji-1,jj-1) * wght(ji,jj,1,1) ) * zusw * vtau_ice(ji,jj)
[700]	210
[3]	211	! Gradient of ice strength
	212	zgphsx = ( alambd(ji,jj,2,2,2,1) - alambd(ji,jj,2,1,2,1) ) * zpresh(ji ,jj-1) &
	213	& + ( alambd(ji,jj,2,2,2,2) - alambd(ji,jj,2,1,2,2) ) * zpresh(ji ,jj ) &
	214	& - ( alambd(ji,jj,2,2,1,1) + alambd(ji,jj,2,1,1,1) ) * zpresh(ji-1,jj-1) &
	215	& - ( alambd(ji,jj,2,2,1,2) + alambd(ji,jj,2,1,1,2) ) * zpresh(ji-1,jj )
	216
	217	zgphsy = - ( alambd(ji,jj,1,1,2,1) + alambd(ji,jj,1,2,2,1) ) * zpresh(ji ,jj-1) &
	218	& - ( alambd(ji,jj,1,1,1,1) + alambd(ji,jj,1,2,1,1) ) * zpresh(ji-1,jj-1) &
	219	& + ( alambd(ji,jj,1,1,2,2) - alambd(ji,jj,1,2,2,2) ) * zpresh(ji ,jj ) &
	220	& + ( alambd(ji,jj,1,1,1,2) - alambd(ji,jj,1,2,1,2) ) * zpresh(ji-1,jj )
	221
[1711]	222	! Gradient of the sea surface height
	223	zgsshx = ( (ssh_m(ji ,jj ) - ssh_m(ji-1,jj ))/e1u(ji-1,jj ) &
[2528]	224	& + (ssh_m(ji ,jj-1) - ssh_m(ji-1,jj-1))/e1u(ji-1,jj-1) ) * 0.5_wp
[1711]	225	zgsshy = ( (ssh_m(ji ,jj ) - ssh_m(ji ,jj-1))/e2v(ji ,jj-1) &
[2528]	226	& + (ssh_m(ji-1,jj ) - ssh_m(ji-1,jj-1))/e2v(ji-1,jj-1) ) * 0.5_wp
[1711]	227
[3]	228	! Computation of the velocity field taking into account the ice-ice interaction.
[888]	229	! Terms that are independent of the ice velocity field.
[1711]	230	za1ct(ji,jj) = ztagnx - zmass(ji,jj) * grav * zgsshx - zgphsx
	231	za2ct(ji,jj) = ztagny - zmass(ji,jj) * grav * zgsshy - zgphsy
[3]	232	END DO
	233	END DO
	234
	235
	236	! SOLUTION OF THE MOMENTUM EQUATION.
	237	!------------------------------------------
	238	! ! ==================== !
	239	DO iter = 1 , 2 * nbiter ! loop over iter !
	240	! ! ==================== !
	241	zindu = MOD( iter , 2 )
[2528]	242	zusdtp = ( zindu * 2._wp + ( 1._wp - zindu ) * 1._wp ) * REAL( nbiter ) / rdt_ice
[3]	243
	244	! Computation of free drift field for free slip boundary conditions.
	245
[888]	246	!CDIR NOVERRCHK
	247	DO jj = k_j1, k_jpj-1
	248	!CDIR NOVERRCHK
	249	DO ji = 1, fs_jpim1
	250	!- Rate of strain tensor.
	251	zt11 = akappa(ji,jj,1,1) * ( zu_a(ji+1,jj) + zu_a(ji+1,jj+1) - zu_a(ji,jj ) - zu_a(ji ,jj+1) ) &
	252	& + akappa(ji,jj,1,2) * ( zv_a(ji+1,jj) + zv_a(ji+1,jj+1) + zv_a(ji,jj ) + zv_a(ji ,jj+1) )
	253	zt12 = - akappa(ji,jj,2,2) * ( zu_a(ji ,jj) + zu_a(ji+1,jj ) - zu_a(ji,jj+1) - zu_a(ji+1,jj+1) ) &
	254	& - akappa(ji,jj,2,1) * ( zv_a(ji ,jj) + zv_a(ji+1,jj ) + zv_a(ji,jj+1) + zv_a(ji+1,jj+1) )
	255	zt22 = - akappa(ji,jj,2,2) * ( zv_a(ji ,jj) + zv_a(ji+1,jj ) - zv_a(ji,jj+1) - zv_a(ji+1,jj+1) ) &
	256	& + akappa(ji,jj,2,1) * ( zu_a(ji ,jj) + zu_a(ji+1,jj ) + zu_a(ji,jj+1) + zu_a(ji+1,jj+1) )
	257	zt21 = akappa(ji,jj,1,1) * ( zv_a(ji+1,jj) + zv_a(ji+1,jj+1) - zv_a(ji,jj ) - zv_a(ji ,jj+1) ) &
	258	& - akappa(ji,jj,1,2) * ( zu_a(ji+1,jj) + zu_a(ji+1,jj+1) + zu_a(ji,jj ) + zu_a(ji ,jj+1) )
[3]	259
[888]	260	!- Rate of strain tensor.
	261	zdgp = zt11 + zt22
	262	zdgi = zt12 + zt21
	263	ztrace2 = zdgp * zdgp
[2528]	264	zdeter = zt11 * zt22 - 0.25_wp * zdgi * zdgi
[3]	265
[888]	266	! Creep limit depends on the size of the grid.
[2528]	267	zdelta = MAX( SQRT( ztrace2 + ( ztrace2 - 4._wp * zdeter ) * usecc2 ), creepl)
[3]	268
[888]	269	!- Computation of viscosities.
	270	zviszeta(ji,jj) = MAX( zpresh(ji,jj) / zdelta, etamn )
	271	zviseta (ji,jj) = zviszeta(ji,jj) * usecc2
	272	END DO
	273	END DO
[3]	274
[888]	275	!- Determination of zc1u, zc2u, zc1v and zc2v.
	276	DO jj = k_j1+1, k_jpj-1
[1347]	277	DO ji = 2, fs_jpim1 ! NO vector opt.
[888]	278	!* zc1u , zc2v
[2528]	279	zvis11 = 2._wp * zviseta (ji-1,jj-1) + dm
	280	zvis12 = zviseta (ji-1,jj-1) + dm
	281	zvis21 = zviseta (ji-1,jj-1)
	282	zvis22 = zviszeta(ji-1,jj-1) - zviseta(ji-1,jj-1)
[888]	283	zdiag = zvis22 * ( akappa(ji-1,jj-1,1,1) + akappa(ji-1,jj-1,2,1) )
	284	zs11_11 = zvis11 * akappa(ji-1,jj-1,1,1) + zdiag
	285	zs12_11 = zvis12 * akappa(ji-1,jj-1,2,2) - zvis21 * akappa(ji-1,jj-1,1,2)
	286	zs21_11 = -zvis12 * akappa(ji-1,jj-1,1,2) + zvis21 * akappa(ji-1,jj-1,2,2)
	287	zs22_11 = zvis11 * akappa(ji-1,jj-1,2,1) + zdiag
[3]	288
[2528]	289	zvis11 = 2._wp * zviseta (ji,jj-1) + dm
	290	zvis22 = zviszeta(ji,jj-1) - zviseta(ji,jj-1)
	291	zvis12 = zviseta (ji,jj-1) + dm
	292	zvis21 = zviseta (ji,jj-1)
[888]	293	zdiag = zvis22 * ( -akappa(ji,jj-1,1,1) + akappa(ji,jj-1,2,1) )
	294	zs11_21 = -zvis11 * akappa(ji,jj-1,1,1) + zdiag
	295	zs12_21 = zvis12 * akappa(ji,jj-1,2,2) - zvis21 * akappa(ji,jj-1,1,2)
	296	zs22_21 = zvis11 * akappa(ji,jj-1,2,1) + zdiag
	297	zs21_21 = -zvis12 * akappa(ji,jj-1,1,2) + zvis21 * akappa(ji,jj-1,2,2)
[3]	298
[2528]	299	zvis11 = 2._wp * zviseta (ji-1,jj) + dm
	300	zvis22 = zviszeta(ji-1,jj) - zviseta(ji-1,jj)
	301	zvis12 = zviseta (ji-1,jj) + dm
	302	zvis21 = zviseta (ji-1,jj)
	303	zdiag = zvis22 * ( akappa(ji-1,jj,1,1) + akappa(ji-1,jj,2,1) )
[888]	304	zs11_12 = zvis11 * akappa(ji-1,jj,1,1) + zdiag
	305	zs12_12 = -zvis12 * akappa(ji-1,jj,2,2) - zvis21 * akappa(ji-1,jj,1,2)
	306	zs22_12 = zvis11 * akappa(ji-1,jj,2,1) + zdiag
	307	zs21_12 = -zvis12 * akappa(ji-1,jj,1,2) - zvis21 * akappa(ji-1,jj,2,2)
[3]	308
[2528]	309	zvis11 = 2._wp * zviseta (ji,jj) + dm
	310	zvis22 = zviszeta(ji,jj) - zviseta(ji,jj)
	311	zvis12 = zviseta (ji,jj) + dm
	312	zvis21 = zviseta (ji,jj)
[888]	313	zdiag = zvis22 * ( -akappa(ji,jj,1,1) + akappa(ji,jj,2,1) )
	314	zs11_22 = -zvis11 * akappa(ji,jj,1,1) + zdiag
	315	zs12_22 = -zvis12 * akappa(ji,jj,2,2) - zvis21 * akappa(ji,jj,1,2)
	316	zs22_22 = zvis11 * akappa(ji,jj,2,1) + zdiag
	317	zs21_22 = -zvis12 * akappa(ji,jj,1,2) - zvis21 * akappa(ji,jj,2,2)
[3]	318
[888]	319	zc1u(ji,jj) = + alambd(ji,jj,2,2,2,1) * zs11_21 + alambd(ji,jj,2,2,2,2) * zs11_22 &
	320	& - alambd(ji,jj,2,2,1,1) * zs11_11 - alambd(ji,jj,2,2,1,2) * zs11_12 &
	321	& - alambd(ji,jj,1,1,2,1) * zs12_21 - alambd(ji,jj,1,1,1,1) * zs12_11 &
	322	& + alambd(ji,jj,1,1,2,2) * zs12_22 + alambd(ji,jj,1,1,1,2) * zs12_12 &
	323	& + alambd(ji,jj,1,2,1,1) * zs21_11 + alambd(ji,jj,1,2,2,1) * zs21_21 &
	324	& + alambd(ji,jj,1,2,1,2) * zs21_12 + alambd(ji,jj,1,2,2,2) * zs21_22 &
	325	& - alambd(ji,jj,2,1,1,1) * zs22_11 - alambd(ji,jj,2,1,2,1) * zs22_21 &
	326	& - alambd(ji,jj,2,1,1,2) * zs22_12 - alambd(ji,jj,2,1,2,2) * zs22_22
[3]	327
[888]	328	zc2u(ji,jj) = + alambd(ji,jj,2,2,2,1) * zs21_21 + alambd(ji,jj,2,2,2,2) * zs21_22 &
	329	& - alambd(ji,jj,2,2,1,1) * zs21_11 - alambd(ji,jj,2,2,1,2) * zs21_12 &
	330	& - alambd(ji,jj,1,1,2,1) * zs22_21 - alambd(ji,jj,1,1,1,1) * zs22_11 &
	331	& + alambd(ji,jj,1,1,2,2) * zs22_22 + alambd(ji,jj,1,1,1,2) * zs22_12 &
	332	& - alambd(ji,jj,1,2,1,1) * zs11_11 - alambd(ji,jj,1,2,2,1) * zs11_21 &
	333	& - alambd(ji,jj,1,2,1,2) * zs11_12 - alambd(ji,jj,1,2,2,2) * zs11_22 &
	334	& + alambd(ji,jj,2,1,1,1) * zs12_11 + alambd(ji,jj,2,1,2,1) * zs12_21 &
	335	& + alambd(ji,jj,2,1,1,2) * zs12_12 + alambd(ji,jj,2,1,2,2) * zs12_22
[3]	336
[888]	337	!* zc1v , zc2v.
[2528]	338	zvis11 = 2._wp * zviseta (ji-1,jj-1) + dm
	339	zvis22 = zviszeta(ji-1,jj-1) - zviseta(ji-1,jj-1)
	340	zvis12 = zviseta (ji-1,jj-1) + dm
	341	zvis21 = zviseta (ji-1,jj-1)
[888]	342	zdiag = zvis22 * ( akappa(ji-1,jj-1,1,2) + akappa(ji-1,jj-1,2,2) )
	343	zs11_11 = zvis11 * akappa(ji-1,jj-1,1,2) + zdiag
	344	zs12_11 = -zvis12 * akappa(ji-1,jj-1,2,1) + zvis21 * akappa(ji-1,jj-1,1,1)
	345	zs22_11 = zvis11 * akappa(ji-1,jj-1,2,2) + zdiag
	346	zs21_11 = zvis12 * akappa(ji-1,jj-1,1,1) - zvis21 * akappa(ji-1,jj-1,2,1)
[3]	347
[2528]	348	zvis11 = 2._wp * zviseta (ji,jj-1) + dm
	349	zvis22 = zviszeta(ji,jj-1) - zviseta(ji,jj-1)
	350	zvis12 = zviseta (ji,jj-1) + dm
	351	zvis21 = zviseta (ji,jj-1)
[888]	352	zdiag = zvis22 * ( akappa(ji,jj-1,1,2) + akappa(ji,jj-1,2,2) )
	353	zs11_21 = zvis11 * akappa(ji,jj-1,1,2) + zdiag
	354	zs12_21 = -zvis12 * akappa(ji,jj-1,2,1) - zvis21 * akappa(ji,jj-1,1,1)
	355	zs22_21 = zvis11 * akappa(ji,jj-1,2,2) + zdiag
	356	zs21_21 = -zvis12 * akappa(ji,jj-1,1,1) - zvis21 * akappa(ji,jj-1,2,1)
[3]	357
[2528]	358	zvis11 = 2._wp * zviseta (ji-1,jj) + dm
	359	zvis22 = zviszeta(ji-1,jj) - zviseta(ji-1,jj)
	360	zvis12 = zviseta (ji-1,jj) + dm
	361	zvis21 = zviseta (ji-1,jj)
[888]	362	zdiag = zvis22 * ( akappa(ji-1,jj,1,2) - akappa(ji-1,jj,2,2) )
	363	zs11_12 = zvis11 * akappa(ji-1,jj,1,2) + zdiag
	364	zs12_12 = -zvis12 * akappa(ji-1,jj,2,1) + zvis21 * akappa(ji-1,jj,1,1)
	365	zs22_12 = -zvis11 * akappa(ji-1,jj,2,2) + zdiag
	366	zs21_12 = zvis12 * akappa(ji-1,jj,1,1) - zvis21 * akappa(ji-1,jj,2,1)
[3]	367
[2528]	368	zvis11 = 2._wp * zviseta (ji,jj) + dm
	369	zvis22 = zviszeta(ji,jj) - zviseta(ji,jj)
	370	zvis12 = zviseta (ji,jj) + dm
	371	zvis21 = zviseta (ji,jj)
[888]	372	zdiag = zvis22 * ( akappa(ji,jj,1,2) - akappa(ji,jj,2,2) )
	373	zs11_22 = zvis11 * akappa(ji,jj,1,2) + zdiag
	374	zs12_22 = -zvis12 * akappa(ji,jj,2,1) - zvis21 * akappa(ji,jj,1,1)
	375	zs22_22 = -zvis11 * akappa(ji,jj,2,2) + zdiag
	376	zs21_22 = -zvis12 * akappa(ji,jj,1,1) - zvis21 * akappa(ji,jj,2,1)
[3]	377
[888]	378	zc1v(ji,jj) = + alambd(ji,jj,2,2,2,1) * zs11_21 + alambd(ji,jj,2,2,2,2) * zs11_22 &
	379	& - alambd(ji,jj,2,2,1,1) * zs11_11 - alambd(ji,jj,2,2,1,2) * zs11_12 &
	380	& - alambd(ji,jj,1,1,2,1) * zs12_21 - alambd(ji,jj,1,1,1,1) * zs12_11 &
	381	& + alambd(ji,jj,1,1,2,2) * zs12_22 + alambd(ji,jj,1,1,1,2) * zs12_12 &
	382	& + alambd(ji,jj,1,2,1,1) * zs21_11 + alambd(ji,jj,1,2,2,1) * zs21_21 &
	383	& + alambd(ji,jj,1,2,1,2) * zs21_12 + alambd(ji,jj,1,2,2,2) * zs21_22 &
	384	& - alambd(ji,jj,2,1,1,1) * zs22_11 - alambd(ji,jj,2,1,2,1) * zs22_21 &
	385	& - alambd(ji,jj,2,1,1,2) * zs22_12 - alambd(ji,jj,2,1,2,2) * zs22_22
[3]	386
[888]	387	zc2v(ji,jj) = + alambd(ji,jj,2,2,2,1) * zs21_21 + alambd(ji,jj,2,2,2,2) * zs21_22 &
	388	& - alambd(ji,jj,2,2,1,1) * zs21_11 - alambd(ji,jj,2,2,1,2) * zs21_12 &
	389	& - alambd(ji,jj,1,1,2,1) * zs22_21 - alambd(ji,jj,1,1,1,1) * zs22_11 &
	390	& + alambd(ji,jj,1,1,2,2) * zs22_22 + alambd(ji,jj,1,1,1,2) * zs22_12 &
	391	& - alambd(ji,jj,1,2,1,1) * zs11_11 - alambd(ji,jj,1,2,2,1) * zs11_21 &
	392	& - alambd(ji,jj,1,2,1,2) * zs11_12 - alambd(ji,jj,1,2,2,2) * zs11_22 &
	393	& + alambd(ji,jj,2,1,1,1) * zs12_11 + alambd(ji,jj,2,1,2,1) * zs12_21 &
	394	& + alambd(ji,jj,2,1,1,2) * zs12_12 + alambd(ji,jj,2,1,2,2) * zs12_22
[3]	395	END DO
[888]	396	END DO
[3]	397
[888]	398	! GAUSS-SEIDEL method
	399	! ! ================ !
	400	iflag: DO jter = 1 , nbitdr ! Relaxation !
	401	! ! ================ !
	402	!CDIR NOVERRCHK
[77]	403	DO jj = k_j1+1, k_jpj-1
[888]	404	!CDIR NOVERRCHK
[1347]	405	DO ji = 2, fs_jpim1 ! NO vector opt.
[888]	406	!
	407	ze11 = akappa(ji,jj-1,1,1) * zu_a(ji+1,jj) + akappa(ji,jj-1,1,2) * zv_a(ji+1,jj)
	408	ze12 = + akappa(ji,jj-1,2,2) * zu_a(ji+1,jj) - akappa(ji,jj-1,2,1) * zv_a(ji+1,jj)
	409	ze22 = + akappa(ji,jj-1,2,2) * zv_a(ji+1,jj) + akappa(ji,jj-1,2,1) * zu_a(ji+1,jj)
	410	ze21 = akappa(ji,jj-1,1,1) * zv_a(ji+1,jj) - akappa(ji,jj-1,1,2) * zu_a(ji+1,jj)
[2528]	411	zvis11 = 2._wp * zviseta (ji,jj-1) + dm
	412	zvis22 = zviszeta(ji,jj-1) - zviseta(ji,jj-1)
	413	zvis12 = zviseta (ji,jj-1) + dm
	414	zvis21 = zviseta (ji,jj-1)
[3]	415	zdiag = zvis22 * ( ze11 + ze22 )
[888]	416	zs11_21 = zvis11 * ze11 + zdiag
	417	zs12_21 = zvis12 * ze12 + zvis21 * ze21
	418	zs22_21 = zvis11 * ze22 + zdiag
	419	zs21_21 = zvis12 * ze21 + zvis21 * ze12
[3]	420
[888]	421	ze11 = akappa(ji-1,jj,1,1) * ( zu_a(ji ,jj+1) - zu_a(ji-1,jj+1) ) &
	422	& + akappa(ji-1,jj,1,2) * ( zv_a(ji ,jj+1) + zv_a(ji-1,jj+1) )
	423	ze12 = + akappa(ji-1,jj,2,2) * ( zu_a(ji-1,jj+1) + zu_a(ji ,jj+1) ) &
	424	& - akappa(ji-1,jj,2,1) * ( zv_a(ji-1,jj+1) + zv_a(ji ,jj+1) )
	425	ze22 = + akappa(ji-1,jj,2,2) * ( zv_a(ji-1,jj+1) + zv_a(ji ,jj+1) ) &
	426	& + akappa(ji-1,jj,2,1) * ( zu_a(ji-1,jj+1) + zu_a(ji ,jj+1) )
	427	ze21 = akappa(ji-1,jj,1,1) * ( zv_a(ji ,jj+1) - zv_a(ji-1,jj+1) ) &
	428	& - akappa(ji-1,jj,1,2) * ( zu_a(ji ,jj+1) + zu_a(ji-1,jj+1) )
[2528]	429	zvis11 = 2._wp * zviseta (ji-1,jj) + dm
	430	zvis22 = zviszeta(ji-1,jj) - zviseta(ji-1,jj)
	431	zvis12 = zviseta (ji-1,jj) + dm
	432	zvis21 = zviseta (ji-1,jj)
[3]	433	zdiag = zvis22 * ( ze11 + ze22 )
[888]	434	zs11_12 = zvis11 * ze11 + zdiag
	435	zs12_12 = zvis12 * ze12 + zvis21 * ze21
	436	zs22_12 = zvis11 * ze22 + zdiag
	437	zs21_12 = zvis12 * ze21 + zvis21 * ze12
[3]	438
[888]	439	ze11 = akappa(ji,jj,1,1) * ( zu_a(ji+1,jj) + zu_a(ji+1,jj+1) - zu_a(ji ,jj+1) ) &
	440	& + akappa(ji,jj,1,2) * ( zv_a(ji+1,jj) + zv_a(ji+1,jj+1) + zv_a(ji ,jj+1) )
	441	ze12 = - akappa(ji,jj,2,2) * ( zu_a(ji+1,jj) - zu_a(ji ,jj+1) - zu_a(ji+1,jj+1) ) &
	442	& - akappa(ji,jj,2,1) * ( zv_a(ji+1,jj) + zv_a(ji ,jj+1) + zv_a(ji+1,jj+1) )
	443	ze22 = - akappa(ji,jj,2,2) * ( zv_a(ji+1,jj) - zv_a(ji ,jj+1) - zv_a(ji+1,jj+1) ) &
	444	& + akappa(ji,jj,2,1) * ( zu_a(ji+1,jj) + zu_a(ji ,jj+1) + zu_a(ji+1,jj+1) )
	445	ze21 = akappa(ji,jj,1,1) * ( zv_a(ji+1,jj) + zv_a(ji+1,jj+1) - zv_a(ji ,jj+1) ) &
	446	& - akappa(ji,jj,1,2) * ( zu_a(ji+1,jj) + zu_a(ji+1,jj+1) + zu_a(ji ,jj+1) )
[2528]	447	zvis11 = 2._wp * zviseta (ji,jj) + dm
	448	zvis22 = zviszeta(ji,jj) - zviseta(ji,jj)
	449	zvis12 = zviseta (ji,jj) + dm
	450	zvis21 = zviseta (ji,jj)
[3]	451	zdiag = zvis22 * ( ze11 + ze22 )
[888]	452	zs11_22 = zvis11 * ze11 + zdiag
	453	zs12_22 = zvis12 * ze12 + zvis21 * ze21
	454	zs22_22 = zvis11 * ze22 + zdiag
	455	zs21_22 = zvis12 * ze21 + zvis21 * ze12
[3]	456
[888]	457	! 2nd part
	458	ze11 = akappa(ji-1,jj-1,1,1) * ( zu_a(ji ,jj-1) - zu_a(ji-1,jj-1) - zu_a(ji-1,jj) ) &
	459	& + akappa(ji-1,jj-1,1,2) * ( zv_a(ji ,jj-1) + zv_a(ji-1,jj-1) + zv_a(ji-1,jj) )
	460	ze12 = - akappa(ji-1,jj-1,2,2) * ( zu_a(ji-1,jj-1) + zu_a(ji ,jj-1) - zu_a(ji-1,jj) ) &
	461	& - akappa(ji-1,jj-1,2,1) * ( zv_a(ji-1,jj-1) + zv_a(ji ,jj-1) + zv_a(ji-1,jj) )
	462	ze22 = - akappa(ji-1,jj-1,2,2) * ( zv_a(ji-1,jj-1) + zv_a(ji ,jj-1) - zv_a(ji-1,jj) ) &
	463	& + akappa(ji-1,jj-1,2,1) * ( zu_a(ji-1,jj-1) + zu_a(ji ,jj-1) + zu_a(ji-1,jj) )
	464	ze21 = akappa(ji-1,jj-1,1,1) * ( zv_a(ji ,jj-1) - zv_a(ji-1,jj-1) - zv_a(ji-1,jj) ) &
	465	& - akappa(ji-1,jj-1,1,2) * ( zu_a(ji ,jj-1) + zu_a(ji-1,jj-1) + zu_a(ji-1,jj) )
[2528]	466	zvis11 = 2._wp * zviseta (ji-1,jj-1) + dm
	467	zvis22 = zviszeta(ji-1,jj-1) - zviseta(ji-1,jj-1)
	468	zvis12 = zviseta (ji-1,jj-1) + dm
	469	zvis21 = zviseta (ji-1,jj-1)
[3]	470	zdiag = zvis22 * ( ze11 + ze22 )
[888]	471	zs11_11 = zvis11 * ze11 + zdiag
	472	zs12_11 = zvis12 * ze12 + zvis21 * ze21
	473	zs22_11 = zvis11 * ze22 + zdiag
	474	zs21_11 = zvis12 * ze21 + zvis21 * ze12
[3]	475
[888]	476	ze11 = akappa(ji,jj-1,1,1) * ( zu_a(ji+1,jj-1) - zu_a(ji ,jj-1) ) &
	477	& + akappa(ji,jj-1,1,2) * ( zv_a(ji+1,jj-1) + zv_a(ji ,jj-1) )
	478	ze12 = - akappa(ji,jj-1,2,2) * ( zu_a(ji ,jj-1) + zu_a(ji+1,jj-1) ) &
	479	& - akappa(ji,jj-1,2,1) * ( zv_a(ji ,jj-1) + zv_a(ji+1,jj-1) )
	480	ze22 = - akappa(ji,jj-1,2,2) * ( zv_a(ji ,jj-1) + zv_a(ji+1,jj-1) ) &
	481	& + akappa(ji,jj-1,2,1) * ( zu_a(ji ,jj-1) + zu_a(ji+1,jj-1) )
	482	ze21 = akappa(ji,jj-1,1,1) * ( zv_a(ji+1,jj-1) - zv_a(ji ,jj-1) ) &
	483	& - akappa(ji,jj-1,1,2) * ( zu_a(ji+1,jj-1) + zu_a(ji ,jj-1) )
[2528]	484	zvis11 = 2._wp * zviseta (ji,jj-1) + dm
	485	zvis22 = zviszeta(ji,jj-1) - zviseta(ji,jj-1)
	486	zvis12 = zviseta (ji,jj-1) + dm
	487	zvis21 = zviseta (ji,jj-1)
[3]	488	zdiag = zvis22 * ( ze11 + ze22 )
[888]	489	zs11_21 = zs11_21 + zvis11 * ze11 + zdiag
	490	zs12_21 = zs12_21 + zvis12 * ze12 + zvis21 * ze21
	491	zs22_21 = zs22_21 + zvis11 * ze22 + zdiag
	492	zs21_21 = zs21_21 + zvis12 * ze21 + zvis21 * ze12
[3]	493
[888]	494	ze11 = - akappa(ji-1,jj,1,1) * zu_a(ji-1,jj) + akappa(ji-1,jj,1,2) * zv_a(ji-1,jj)
	495	ze12 = - akappa(ji-1,jj,2,2) * zu_a(ji-1,jj) - akappa(ji-1,jj,2,1) * zv_a(ji-1,jj)
	496	ze22 = - akappa(ji-1,jj,2,2) * zv_a(ji-1,jj) + akappa(ji-1,jj,2,1) * zu_a(ji-1,jj)
	497	ze21 = - akappa(ji-1,jj,1,1) * zv_a(ji-1,jj) - akappa(ji-1,jj,1,2) * zu_a(ji-1,jj)
[2528]	498	zvis11 = 2._wp * zviseta (ji-1,jj) + dm
	499	zvis22 = zviszeta(ji-1,jj) - zviseta(ji-1,jj)
	500	zvis12 = zviseta (ji-1,jj) + dm
	501	zvis21 = zviseta (ji-1,jj)
[3]	502	zdiag = zvis22 * ( ze11 + ze22 )
[888]	503	zs11_12 = zs11_12 + zvis11 * ze11 + zdiag
	504	zs12_12 = zs12_12 + zvis12 * ze12 + zvis21 * ze21
	505	zs22_12 = zs22_12 + zvis11 * ze22 + zdiag
	506	zs21_12 = zs21_12 + zvis12 * ze21 + zvis21 * ze12
[3]	507
[888]	508	zd1 = + alambd(ji,jj,2,2,2,1) * zs11_21 + alambd(ji,jj,2,2,2,2) * zs11_22 &
	509	& - alambd(ji,jj,2,2,1,1) * zs11_11 - alambd(ji,jj,2,2,1,2) * zs11_12 &
	510	& - alambd(ji,jj,1,1,2,1) * zs12_21 - alambd(ji,jj,1,1,1,1) * zs12_11 &
	511	& + alambd(ji,jj,1,1,2,2) * zs12_22 + alambd(ji,jj,1,1,1,2) * zs12_12 &
	512	& + alambd(ji,jj,1,2,1,1) * zs21_11 + alambd(ji,jj,1,2,2,1) * zs21_21 &
	513	& + alambd(ji,jj,1,2,1,2) * zs21_12 + alambd(ji,jj,1,2,2,2) * zs21_22 &
	514	& - alambd(ji,jj,2,1,1,1) * zs22_11 - alambd(ji,jj,2,1,2,1) * zs22_21 &
	515	& - alambd(ji,jj,2,1,1,2) * zs22_12 - alambd(ji,jj,2,1,2,2) * zs22_22
[3]	516
[888]	517	zd2 = + alambd(ji,jj,2,2,2,1) * zs21_21 + alambd(ji,jj,2,2,2,2) * zs21_22 &
	518	& - alambd(ji,jj,2,2,1,1) * zs21_11 - alambd(ji,jj,2,2,1,2) * zs21_12 &
	519	& - alambd(ji,jj,1,1,2,1) * zs22_21 - alambd(ji,jj,1,1,1,1) * zs22_11 &
	520	& + alambd(ji,jj,1,1,2,2) * zs22_22 + alambd(ji,jj,1,1,1,2) * zs22_12 &
	521	& - alambd(ji,jj,1,2,1,1) * zs11_11 - alambd(ji,jj,1,2,2,1) * zs11_21 &
	522	& - alambd(ji,jj,1,2,1,2) * zs11_12 - alambd(ji,jj,1,2,2,2) * zs11_22 &
	523	& + alambd(ji,jj,2,1,1,1) * zs12_11 + alambd(ji,jj,2,1,2,1) * zs12_21 &
	524	& + alambd(ji,jj,2,1,1,2) * zs12_12 + alambd(ji,jj,2,1,2,2) * zs12_22
[3]	525
[1470]	526	zur = zu_a(ji,jj) - u_oce(ji,jj)
	527	zvr = zv_a(ji,jj) - v_oce(ji,jj)
[888]	528	!!!!
[2528]	529	zmod = SQRT( zurzur + zvrzvr ) * ( 1._wp - zfrld(ji,jj) )
[888]	530	za = rhoco * zmod
	531	!!!!
[2528]	532	!!gm chg resul za = rhoco * SQRT( zurzur + zvrzvr ) * ( 1._wp - zfrld(ji,jj) )
[888]	533	zac = za * cangvg
	534	zmpzas = alpha * zcorl(ji,jj) + za * zsang(ji,jj)
	535	zmassdt = zusdtp * zmass(ji,jj)
[2528]	536	zcorlal = ( 1._wp - alpha ) * zcorl(ji,jj)
[3]	537
[888]	538	za1 = zmassdt * zu0(ji,jj) + zcorlal * zv0(ji,jj) + za1ct(ji,jj) &
[1470]	539	& + za * ( cangvg * u_oce(ji,jj) - zsang(ji,jj) * v_oce(ji,jj) )
[888]	540	za2 = zmassdt * zv0(ji,jj) - zcorlal * zu0(ji,jj) + za2ct(ji,jj) &
[1470]	541	& + za * ( cangvg * v_oce(ji,jj) + zsang(ji,jj) * u_oce(ji,jj) )
[888]	542	zb1 = zmassdt + zac - zc1u(ji,jj)
	543	zb2 = zmpzas - zc2u(ji,jj)
	544	zc1 = zmpzas + zc1v(ji,jj)
	545	zc2 = zmassdt + zac - zc2v(ji,jj)
	546	zdeter = zc1 * zb2 + zc2 * zb1
	547	zden = SIGN( rone, zdeter) / MAX( epsd , ABS( zdeter ) )
	548	zunw = ( ( za1 + zd1 ) * zc2 + ( za2 + zd2 ) * zc1 ) * zden
	549	zvnw = ( ( za2 + zd2 ) * zb1 - ( za1 + zd1 ) * zb2 ) * zden
[2528]	550	zmask = ( 1._wp - MAX( rzero, SIGN( rone , 1._wp - zmass(ji,jj) ) ) ) * tmu(ji,jj)
[3]	551
[888]	552	zu_n(ji,jj) = ( zu_a(ji,jj) + om * ( zunw - zu_a(ji,jj) ) * tmu(ji,jj) ) * zmask
	553	zv_n(ji,jj) = ( zv_a(ji,jj) + om * ( zvnw - zv_a(ji,jj) ) * tmu(ji,jj) ) * zmask
[3]	554	END DO
	555	END DO
	556
[888]	557	CALL lbc_lnk( zu_n(:,1:jpj), 'I', -1. )
	558	CALL lbc_lnk( zv_n(:,1:jpj), 'I', -1. )
[3]	559
[2804]	560	#if defined key_agrif
	561	! copy the boundary value from u_ice_nst and v_ice_nst to u_ice and v_ice
	562	! before next interations
	563	CALL Agrif_dyn_lim2_copy(zu_n,zv_n)
	564	#endif
	565
[888]	566	! Test of Convergence
[77]	567	DO jj = k_j1+1 , k_jpj-1
[888]	568	zresr(:,jj) = MAX( ABS( zu_a(:,jj) - zu_n(:,jj) ) , ABS( zv_a(:,jj) - zv_n(:,jj) ) )
[3]	569	END DO
[888]	570	zresm = MAXVAL( zresr(1:jpi,k_j1+1:k_jpj-1) )
	571	!!!! this should be faster on scalar processor
	572	! zresm = MAXVAL( MAX( ABS( zu_a(1:jpi,k_j1+1:k_jpj-1) - zu_n(1:jpi,k_j1+1:k_jpj-1) ), &
	573	! & ABS( zv_a(1:jpi,k_j1+1:k_jpj-1) - zv_n(1:jpi,k_j1+1:k_jpj-1) ) ) )
	574	!!!!
[77]	575	IF( lk_mpp ) CALL mpp_max( zresm ) ! max over the global domain
[3]	576
[888]	577	DO jj = k_j1, k_jpj
	578	zu_a(:,jj) = zu_n(:,jj)
	579	zv_a(:,jj) = zv_n(:,jj)
	580	END DO
[3]	581
[888]	582	IF( zresm <= resl ) EXIT iflag
[3]	583
[888]	584	! ! ================ !
	585	END DO iflag ! end Relaxation !
	586	! ! ================ !
	587
	588	IF( zindu == 0 ) THEN ! even iteration
	589	DO jj = k_j1 , k_jpj-1
	590	zu0(:,jj) = zu_a(:,jj)
	591	zv0(:,jj) = zv_a(:,jj)
	592	END DO
	593	ENDIF
	594	! ! ==================== !
[3]	595	END DO ! end loop over iter !
	596	! ! ==================== !
	597
[1470]	598	u_ice(:,:) = zu_a(:,1:jpj)
	599	v_ice(:,:) = zv_a(:,1:jpj)
[888]	600
[258]	601	IF(ln_ctl) THEN
	602	WRITE(charout,FMT="('lim_rhg : res =',D23.16, ' iter =',I4)") zresm, jter
	603	CALL prt_ctl_info(charout)
[1470]	604	CALL prt_ctl(tab2d_1=u_ice, clinfo1=' lim_rhg : u_ice :', tab2d_2=v_ice, clinfo2=' v_ice :')
[3]	605	ENDIF
	606
[821]	607	END SUBROUTINE lim_rhg_2
[77]	608
[3]	609	#else
[77]	610	!!----------------------------------------------------------------------
[2528]	611	!! Default option Dummy module NO VP & LIM-2 sea-ice model
[77]	612	!!----------------------------------------------------------------------
[3]	613	CONTAINS
[821]	614	SUBROUTINE lim_rhg_2( k1 , k2 ) ! Dummy routine
	615	WRITE(,) 'lim_rhg_2: You should not have seen this print! error?', k1, k2
	616	END SUBROUTINE lim_rhg_2
[3]	617	#endif
	618
[77]	619	!!==============================================================================
[821]	620	END MODULE limrhg_2

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