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traatf.F90 in NEMO/branches/2020/dev_r12377_KERNEL-06_techene_e3/src/OCE/TRA – NEMO

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source: NEMO/branches/2020/dev_r12377_KERNEL-06_techene_e3/src/OCE/TRA/traatf.F90 @ 12680

Last change on this file since 12680 was 12680, checked in by techene, 4 years ago
dynatfQCO.F90, stepLF.F90 : fixed (remove pe3. from dyn_atf_qco input arguments), all : remove e3. tables and include gurvan's feedbacks
Property svn:keywords set to `Id`
File size: 20.1 KB

Rev	Line
[11057]	1	MODULE traatf
[3]	2	!!======================================================================
[11057]	3	!! * MODULE traatf *
[11475]	4	!! Ocean active tracers: Asselin time filtering for temperature and salinity
[3]	5	!!======================================================================
[1110]	6	!! History : OPA ! 1991-11 (G. Madec) Original code
	7	!! 7.0 ! 1993-03 (M. Guyon) symetrical conditions
	8	!! 8.0 ! 1996-02 (G. Madec & M. Imbard) opa release 8.0
	9	!! - ! 1996-04 (A. Weaver) Euler forward step
	10	!! 8.2 ! 1999-02 (G. Madec, N. Grima) semi-implicit pressure grad.
	11	!! NEMO 1.0 ! 2002-08 (G. Madec) F90: Free form and module
	12	!! - ! 2002-11 (C. Talandier, A-M Treguier) Open boundaries
	13	!! - ! 2005-04 (C. Deltel) Add Asselin trend in the ML budget
	14	!! 2.0 ! 2006-02 (L. Debreu, C. Mazauric) Agrif implementation
	15	!! 3.0 ! 2008-06 (G. Madec) time stepping always done in trazdf
[1438]	16	!! 3.1 ! 2009-02 (G. Madec, R. Benshila) re-introduce the vvl option
[2528]	17	!! 3.3 ! 2010-04 (M. Leclair, G. Madec) semi-implicit hpg with asselin filter + modified LF-RA
	18	!! - ! 2010-05 (C. Ethe, G. Madec) merge TRC-TRA
[11475]	19	!! 4.1 ! 2019-08 (A. Coward, D. Storkey) rename tranxt.F90 -> traatf.F90. Now only does time filtering.
[3]	20	!!----------------------------------------------------------------------
[503]	21
	22	!!----------------------------------------------------------------------
[11475]	23	!! tra_atf : time filtering on tracers
	24	!! tra_atf_fix : time filtering on tracers : fixed volume case
	25	!! tra_atf_vvl : time filtering on tracers : variable volume case
[3]	26	!!----------------------------------------------------------------------
	27	USE oce ! ocean dynamics and tracers variables
[12581]	28	USE dom_oce ! ocean space and time domain variables
[2528]	29	USE sbc_oce ! surface boundary condition: ocean
[5467]	30	USE sbcrnf ! river runoffs
[12150]	31	USE isf_oce ! ice shelf melting
[4990]	32	USE zdf_oce ! ocean vertical mixing
[1438]	33	USE domvvl ! variable volume
[4990]	34	USE trd_oce ! trends: ocean variables
[12581]	35	USE trdtra ! trends manager: tracers
[4990]	36	USE traqsr ! penetrative solar radiation (needed for nksr)
	37	USE phycst ! physical constant
[9019]	38	USE ldftra ! lateral physics : tracers
	39	USE ldfslp ! lateral physics : slopes
	40	USE bdy_oce , ONLY : ln_bdy
[3294]	41	USE bdytra ! open boundary condition (bdy_tra routine)
[4990]	42	!
[3]	43	USE in_out_manager ! I/O manager
	44	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
[258]	45	USE prtctl ! Print control
[4990]	46	USE timing ! Timing
[2528]	47	#if defined key_agrif
[9570]	48	USE agrif_oce_interp
[2528]	49	#endif
[3]	50
	51	IMPLICIT NONE
	52	PRIVATE
	53
[11057]	54	PUBLIC tra_atf ! routine called by step.F90
	55	PUBLIC tra_atf_fix ! to be used in trcnxt
	56	PUBLIC tra_atf_vvl ! to be used in trcnxt
[592]	57
	58	!! * Substitutions
[12340]	59	# include "do_loop_substitute.h90"
[12656]	60	# include "domzgr_substitute.h90"
[3]	61	!!----------------------------------------------------------------------
[10068]	62	!! NEMO/OCE 4.0 , NEMO Consortium (2018)
[2715]	63	!! $Id$
[10068]	64	!! Software governed by the CeCILL license (see ./LICENSE)
[3]	65	!!----------------------------------------------------------------------
	66	CONTAINS
	67
[11057]	68	SUBROUTINE tra_atf( kt, Kbb, Kmm, Kaa, pts )
[3]	69	!!----------------------------------------------------------------------
[11057]	70	!! * ROUTINE traatf *
[3]	71	!!
[12581]	72	!! ** Purpose : Apply the boundary condition on the after temperature
[11475]	73	!! and salinity fields and add the Asselin time filter on now fields.
[12581]	74	!!
	75	!! ** Method : At this stage of the computation, ta and sa are the
[1110]	76	!! after temperature and salinity as the time stepping has
	77	!! been performed in trazdf_imp or trazdf_exp module.
[3]	78	!!
[12581]	79	!! - Apply lateral boundary conditions on (ta,sa)
	80	!! at the local domain boundaries through lbc_lnk call,
	81	!! at the one-way open boundaries (ln_bdy=T),
[4990]	82	!! at the AGRIF zoom boundaries (lk_agrif=T)
[1110]	83	!!
[1438]	84	!! - Update lateral boundary conditions on AGRIF children
	85	!! domains (lk_agrif=T)
[1110]	86	!!
[11475]	87	!! ** Action : - ts(Kmm) time filtered
[503]	88	!!----------------------------------------------------------------------
[11057]	89	INTEGER , INTENT(in ) :: kt ! ocean time-step index
	90	INTEGER , INTENT(in ) :: Kbb, Kmm, Kaa ! time level indices
[12581]	91	REAL(wp), DIMENSION(jpi,jpj,jpk,jpts,jpt), INTENT(inout) :: pts ! active tracers
[503]	92	!!
[6140]	93	INTEGER :: ji, jj, jk, jn ! dummy loop indices
	94	REAL(wp) :: zfact ! local scalars
[9019]	95	REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrdt, ztrds
[3]	96	!!----------------------------------------------------------------------
[3294]	97	!
[11057]	98	IF( ln_timing ) CALL timing_start( 'tra_atf')
[3294]	99	!
[1110]	100	IF( kt == nit000 ) THEN
	101	IF(lwp) WRITE(numout,*)
[11475]	102	IF(lwp) WRITE(numout,*) 'tra_atf : apply Asselin time filter to "now" fields'
[1110]	103	IF(lwp) WRITE(numout,*) '~~~~~~~'
[592]	104	ENDIF
	105
[1110]	106	! Update after tracer on domain lateral boundaries
[12581]	107	!
[5656]	108	#if defined key_agrif
	109	CALL Agrif_tra ! AGRIF zoom boundaries
	110	#endif
[9094]	111	! ! local domain boundaries (T-point, unchanged sign)
[11057]	112	CALL lbc_lnk_multi( 'traatf', pts(:,:,:,jp_tem,Kaa), 'T', 1., pts(:,:,:,jp_sal,Kaa), 'T', 1. )
[5656]	113	!
[11057]	114	IF( ln_bdy ) CALL bdy_tra( kt, Kbb, pts, Kaa ) ! BDY open boundaries
[12581]	115
[1438]	116	! set time step size (Euler/Leapfrog)
[9019]	117	IF( neuler == 0 .AND. kt == nit000 ) THEN ; r2dt = rdt ! at nit000 (Euler)
[6140]	118	ELSEIF( kt <= nit000 + 1 ) THEN ; r2dt = 2._wp* rdt ! at nit000 or nit000+1 (Leapfrog)
[1438]	119	ENDIF
[3]	120
[1110]	121	! trends computation initialisation
[12581]	122	IF( l_trdtra ) THEN
[9019]	123	ALLOCATE( ztrdt(jpi,jpj,jpk) , ztrds(jpi,jpj,jpk) )
[8698]	124	ztrdt(:,:,jpk) = 0._wp
	125	ztrds(:,:,jpk) = 0._wp
[12581]	126	IF( ln_traldf_iso ) THEN ! diagnose the "pure" Kz diffusive trend
[11057]	127	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_tem, jptra_zdfp, ztrdt )
	128	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_sal, jptra_zdfp, ztrds )
[4990]	129	ENDIF
[12581]	130	! total trend for the non-time-filtered variables.
[8698]	131	zfact = 1.0 / rdt
[11057]	132	! G Nurser 23 Mar 2017. Recalculate trend as Delta(e3t*T)/e3tn; e3tn cancel from pts(Kmm) terms
[7646]	133	DO jk = 1, jpkm1
[12680]	134	ztrdt(:,:,jk) = ( pts(:,:,jk,jp_tem,Kaa)e3t(:,:,jk,Kaa) / e3t(:,:,jk,Kmm) - pts(:,:,jk,jp_tem,Kmm)) zfact
	135	ztrds(:,:,jk) = ( pts(:,:,jk,jp_sal,Kaa)e3t(:,:,jk,Kaa) / e3t(:,:,jk,Kmm) - pts(:,:,jk,jp_sal,Kmm)) zfact
[7646]	136	END DO
[11057]	137	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_tem, jptra_tot, ztrdt )
	138	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_sal, jptra_tot, ztrds )
[9019]	139	IF( ln_linssh ) THEN ! linear sea surface height only
[12581]	140	! Store now fields before applying the Asselin filter
[8698]	141	! in order to calculate Asselin filter trend later.
[12581]	142	ztrdt(:,:,:) = pts(:,:,:,jp_tem,Kmm)
[11057]	143	ztrds(:,:,:) = pts(:,:,:,jp_sal,Kmm)
[8698]	144	ENDIF
[1110]	145	ENDIF
	146
[12581]	147	IF( neuler == 0 .AND. kt == nit000 ) THEN ! Euler time-stepping
[11099]	148	!
[9019]	149	IF (l_trdtra .AND. .NOT. ln_linssh ) THEN ! Zero Asselin filter contribution must be explicitly written out since for vvl
[11057]	150	! ! Asselin filter is output by tra_atf_vvl that is not called on this time step
[8698]	151	ztrdt(:,:,:) = 0._wp
	152	ztrds(:,:,:) = 0._wp
[11057]	153	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_tem, jptra_atf, ztrdt )
	154	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_sal, jptra_atf, ztrds )
[8698]	155	END IF
[6140]	156	!
[2528]	157	ELSE ! Leap-Frog + Asselin filter time stepping
	158	!
[12581]	159	IF( ln_linssh ) THEN ; CALL tra_atf_fix( kt, Kbb, Kmm, Kaa, nit000, 'TRA', pts, jpts ) ! linear free surface
[11057]	160	ELSE ; CALL tra_atf_vvl( kt, Kbb, Kmm, Kaa, nit000, rdt, 'TRA', pts, sbc_tsc, sbc_tsc_b, jpts ) ! non-linear free surface
[2528]	161	ENDIF
[6140]	162	!
[11057]	163	CALL lbc_lnk_multi( 'traatf', pts(:,:,:,jp_tem,Kbb) , 'T', 1., pts(:,:,:,jp_sal,Kbb) , 'T', 1., &
	164	& pts(:,:,:,jp_tem,Kmm) , 'T', 1., pts(:,:,:,jp_sal,Kmm) , 'T', 1., &
	165	& pts(:,:,:,jp_tem,Kaa), 'T', 1., pts(:,:,:,jp_sal,Kaa), 'T', 1. )
[9094]	166	!
[12581]	167	ENDIF
[2715]	168	!
[12581]	169	IF( l_trdtra .AND. ln_linssh ) THEN ! trend of the Asselin filter (tb filtered - tb)/dt
	170	zfact = 1._wp / r2dt
[1110]	171	DO jk = 1, jpkm1
[11099]	172	ztrdt(:,:,jk) = ( pts(:,:,jk,jp_tem,Kmm) - ztrdt(:,:,jk) ) * zfact
	173	ztrds(:,:,jk) = ( pts(:,:,jk,jp_sal,Kmm) - ztrds(:,:,jk) ) * zfact
[1110]	174	END DO
[11057]	175	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_tem, jptra_atf, ztrdt )
	176	CALL trd_tra( kt, Kmm, Kaa, 'TRA', jp_sal, jptra_atf, ztrds )
[1438]	177	END IF
[9019]	178	IF( l_trdtra ) DEALLOCATE( ztrdt , ztrds )
[2715]	179	!
[1438]	180	! ! control print
[12236]	181	IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab3d_1=pts(:,:,:,jp_tem,Kmm), clinfo1=' nxt - Tn: ', mask1=tmask, &
	182	& tab3d_2=pts(:,:,:,jp_sal,Kmm), clinfo2= ' Sn: ', mask2=tmask )
[1438]	183	!
[11057]	184	IF( ln_timing ) CALL timing_stop('tra_atf')
[3294]	185	!
[11057]	186	END SUBROUTINE tra_atf
[1438]	187
	188
[11099]	189	SUBROUTINE tra_atf_fix( kt, Kbb, Kmm, Kaa, kit000, cdtype, pt, kjpt )
[1438]	190	!!----------------------------------------------------------------------
[11057]	191	!! * ROUTINE tra_atf_fix *
[1438]	192	!!
[11475]	193	!! ** Purpose : fixed volume: apply the Asselin time filter to the "now" field
[12581]	194	!!
[1438]	195	!! ** Method : - Apply a Asselin time filter on now fields.
	196	!!
[11475]	197	!! ** Action : - pt(Kmm) ready for the next time step
[1438]	198	!!----------------------------------------------------------------------
[11057]	199	INTEGER , INTENT(in ) :: kt ! ocean time-step index
	200	INTEGER , INTENT(in ) :: Kbb, Kmm, Kaa ! time level indices
	201	INTEGER , INTENT(in ) :: kit000 ! first time step index
	202	CHARACTER(len=3) , INTENT(in ) :: cdtype ! =TRA or TRC (tracer indicator)
	203	INTEGER , INTENT(in ) :: kjpt ! number of tracers
	204	REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt,jpt), INTENT(inout) :: pt ! tracer fields
[2715]	205	!
[2528]	206	INTEGER :: ji, jj, jk, jn ! dummy loop indices
	207	REAL(wp) :: ztn, ztd ! local scalars
[1438]	208	!!----------------------------------------------------------------------
[6140]	209	!
[3294]	210	IF( kt == kit000 ) THEN
[1438]	211	IF(lwp) WRITE(numout,*)
[11475]	212	IF(lwp) WRITE(numout,*) 'tra_atf_fix : time filtering', cdtype
[1438]	213	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~'
	214	ENDIF
	215	!
[2528]	216	DO jn = 1, kjpt
[1438]	217	!
[12340]	218	DO_3D_00_00( 1, jpkm1 )
[12581]	219	ztn = pt(ji,jj,jk,jn,Kmm)
[12340]	220	ztd = pt(ji,jj,jk,jn,Kaa) - 2._wp * ztn + pt(ji,jj,jk,jn,Kbb) ! time laplacian on tracers
	221	!
	222	pt(ji,jj,jk,jn,Kmm) = ztn + atfp * ztd ! pt <-- filtered pt
	223	END_3D
[1110]	224	!
[2528]	225	END DO
[1438]	226	!
[11057]	227	END SUBROUTINE tra_atf_fix
[3]	228
[1110]	229
[11057]	230	SUBROUTINE tra_atf_vvl( kt, Kbb, Kmm, Kaa, kit000, p2dt, cdtype, pt, psbc_tc, psbc_tc_b, kjpt )
[1438]	231	!!----------------------------------------------------------------------
[11057]	232	!! * ROUTINE tra_atf_vvl *
[1438]	233	!!
[12581]	234	!! ** Purpose : Time varying volume: apply the Asselin time filter
	235	!!
[1438]	236	!! ** Method : - Apply a thickness weighted Asselin time filter on now fields.
[12656]	237	!! pt(Kmm) = ( e3t_Kmmpt(Kmm) + atfp[ e3t_Kbbpt(Kbb) - 2 e3t_Kmmpt(Kmm) + e3t_Kaa*pt(Kaa) ] )
	238	!! /( e3t_Kmm + atfp*[ e3t_Kbb - 2 e3t_Kmm + e3t_Kaa ] )
[1438]	239	!!
[11475]	240	!! ** Action : - pt(Kmm) ready for the next time step
[1438]	241	!!----------------------------------------------------------------------
[11057]	242	INTEGER , INTENT(in ) :: kt ! ocean time-step index
	243	INTEGER , INTENT(in ) :: Kbb, Kmm, Kaa ! time level indices
	244	INTEGER , INTENT(in ) :: kit000 ! first time step index
	245	REAL(wp) , INTENT(in ) :: p2dt ! time-step
	246	CHARACTER(len=3) , INTENT(in ) :: cdtype ! =TRA or TRC (tracer indicator)
	247	INTEGER , INTENT(in ) :: kjpt ! number of tracers
	248	REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt,jpt), INTENT(inout) :: pt ! tracer fields
	249	REAL(wp), DIMENSION(jpi,jpj ,kjpt) , INTENT(in ) :: psbc_tc ! surface tracer content
	250	REAL(wp), DIMENSION(jpi,jpj ,kjpt) , INTENT(in ) :: psbc_tc_b ! before surface tracer content
[6140]	251	!
[5930]	252	LOGICAL :: ll_traqsr, ll_rnf, ll_isf ! local logical
[2528]	253	INTEGER :: ji, jj, jk, jn ! dummy loop indices
[8698]	254	REAL(wp) :: zfact, zfact1, ztc_a , ztc_n , ztc_b , ztc_f , ztc_d ! local scalar
[12372]	255	REAL(wp) :: zfact2, ze3t_b, ze3t_n, ze3t_a, ze3t_f, ze3t_d, zscale ! - -
[9019]	256	REAL(wp), ALLOCATABLE, DIMENSION(:,:,:,:) :: ztrd_atf
[1438]	257	!!----------------------------------------------------------------------
[3294]	258	!
	259	IF( kt == kit000 ) THEN
[1438]	260	IF(lwp) WRITE(numout,*)
[11475]	261	IF(lwp) WRITE(numout,*) 'tra_atf_vvl : time filtering', cdtype
[1438]	262	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~'
	263	ENDIF
[2528]	264	!
[12581]	265	IF( cdtype == 'TRA' ) THEN
[2528]	266	ll_traqsr = ln_traqsr ! active tracers case and solar penetration
[5467]	267	ll_rnf = ln_rnf ! active tracers case and river runoffs
[6140]	268	ll_isf = ln_isf ! active tracers case and ice shelf melting
	269	ELSE ! passive tracers case
	270	ll_traqsr = .FALSE. ! NO solar penetration
[12581]	271	ll_rnf = .FALSE. ! NO river runoffs ???? !!gm BUG ?
	272	ll_isf = .FALSE. ! NO ice shelf melting/freezing !!gm BUG ??
[2528]	273	ENDIF
	274	!
[9019]	275	IF( ( l_trdtra .AND. cdtype == 'TRA' ) .OR. ( l_trdtrc .AND. cdtype == 'TRC' ) ) THEN
	276	ALLOCATE( ztrd_atf(jpi,jpj,jpk,kjpt) )
[8698]	277	ztrd_atf(:,:,:,:) = 0.0_wp
	278	ENDIF
[10095]	279	zfact = 1._wp / p2dt
[9019]	280	zfact1 = atfp * p2dt
	281	zfact2 = zfact1 * r1_rau0
[12581]	282	DO jn = 1, kjpt
[12340]	283	DO_3D_00_00( 1, jpkm1 )
	284	ze3t_b = e3t(ji,jj,jk,Kbb)
	285	ze3t_n = e3t(ji,jj,jk,Kmm)
	286	ze3t_a = e3t(ji,jj,jk,Kaa)
	287	! ! tracer content at Before, now and after
	288	ztc_b = pt(ji,jj,jk,jn,Kbb) * ze3t_b
	289	ztc_n = pt(ji,jj,jk,jn,Kmm) * ze3t_n
	290	ztc_a = pt(ji,jj,jk,jn,Kaa) * ze3t_a
	291	!
	292	ze3t_d = ze3t_a - 2. * ze3t_n + ze3t_b
	293	ztc_d = ztc_a - 2. * ztc_n + ztc_b
	294	!
	295	ze3t_f = ze3t_n + atfp * ze3t_d
	296	ztc_f = ztc_n + atfp * ztc_d
	297	!
[12372]	298	! Add asselin correction on scale factors:
[12581]	299	zscale = tmask(ji,jj,jk) * e3t(ji,jj,jk,Kmm) / ( ht(ji,jj) + 1._wp - ssmask(ji,jj) )
	300	ze3t_f = ze3t_f - zfact2 * zscale * ( emp_b(ji,jj) - emp(ji,jj) )
	301	IF ( ll_rnf ) ze3t_f = ze3t_f + zfact2 * zscale * ( rnf_b(ji,jj) - rnf(ji,jj) )
[12372]	302	IF ( ll_isf ) THEN
	303	IF ( ln_isfcav_mlt ) ze3t_f = ze3t_f - zfact2 * zscale * ( fwfisf_cav_b(ji,jj) - fwfisf_cav(ji,jj) )
	304	IF ( ln_isfpar_mlt ) ze3t_f = ze3t_f - zfact2 * zscale * ( fwfisf_par_b(ji,jj) - fwfisf_par(ji,jj) )
	305	ENDIF
	306	!
[12581]	307	IF( jk == mikt(ji,jj) ) THEN ! first level
[12340]	308	ztc_f = ztc_f - zfact1 * ( psbc_tc(ji,jj,jn) - psbc_tc_b(ji,jj,jn) )
	309	ENDIF
	310	!
	311	! solar penetration (temperature only)
[12581]	312	IF( ll_traqsr .AND. jn == jp_tem .AND. jk <= nksr ) &
	313	& ztc_f = ztc_f - zfact1 * ( qsr_hc(ji,jj,jk) - qsr_hc_b(ji,jj,jk) )
[12340]	314	!
	315	!
	316	IF( ll_rnf .AND. jk <= nk_rnf(ji,jj) ) &
[12581]	317	& ztc_f = ztc_f - zfact1 * ( rnf_tsc(ji,jj,jn) - rnf_tsc_b(ji,jj,jn) ) &
[12340]	318	& * e3t(ji,jj,jk,Kmm) / h_rnf(ji,jj)
[12156]	319
[12340]	320	!
	321	! ice shelf
	322	IF( ll_isf ) THEN
	323	!
	324	! melt in the cavity
	325	IF ( ln_isfcav_mlt ) THEN
	326	! level fully include in the Losch_2008 ice shelf boundary layer
	327	IF ( jk >= misfkt_cav(ji,jj) .AND. jk < misfkb_cav(ji,jj) ) THEN
	328	ztc_f = ztc_f - zfact1 * ( risf_cav_tsc(ji,jj,jn) - risf_cav_tsc_b(ji,jj,jn) ) &
	329	& * e3t(ji,jj,jk,Kmm) / rhisf_tbl_cav(ji,jj)
	330	END IF
[12581]	331	! level partially include in Losch_2008 ice shelf boundary layer
[12340]	332	IF ( jk == misfkb_cav(ji,jj) ) THEN
	333	ztc_f = ztc_f - zfact1 * ( risf_cav_tsc(ji,jj,jn) - risf_cav_tsc_b(ji,jj,jn) ) &
[12680]	334	& * e3t(ji,jj,jk,Kmm) / rhisf_tbl_cav(ji,jj) * rfrac_tbl_cav(ji,jj)
[12340]	335	END IF
	336	END IF
	337	!
	338	! parametrised melt (cavity closed)
	339	IF ( ln_isfpar_mlt ) THEN
	340	! level fully include in the Losch_2008 ice shelf boundary layer
	341	IF ( jk >= misfkt_par(ji,jj) .AND. jk < misfkb_par(ji,jj) ) THEN
	342	ztc_f = ztc_f - zfact1 * ( risf_par_tsc(ji,jj,jn) - risf_par_tsc_b(ji,jj,jn) ) &
	343	& * e3t(ji,jj,jk,Kmm) / rhisf_tbl_par(ji,jj)
	344	END IF
[12581]	345	! level partially include in Losch_2008 ice shelf boundary layer
[12340]	346	IF ( jk == misfkb_par(ji,jj) ) THEN
	347	ztc_f = ztc_f - zfact1 * ( risf_par_tsc(ji,jj,jn) - risf_par_tsc_b(ji,jj,jn) ) &
[12680]	348	& * e3t(ji,jj,jk,Kmm) / rhisf_tbl_par(ji,jj) * rfrac_tbl_par(ji,jj)
[12340]	349	END IF
	350	END IF
	351	!
	352	! ice sheet coupling correction
	353	IF ( ln_isfcpl ) THEN
[12156]	354	!
[12340]	355	! at kt = nit000, risfcpl_vol_n = 0 and risfcpl_vol_b = risfcpl_vol so contribution nul
	356	IF ( ln_rstart .AND. kt == nit000+1 ) THEN
	357	ztc_f = ztc_f + zfact1 * risfcpl_tsc(ji,jj,jk,jn) * r1_e1e2t(ji,jj)
[12372]	358	! Shouldn't volume increment be spread according thanks to zscale ?
[12340]	359	ze3t_f = ze3t_f - zfact1 * risfcpl_vol(ji,jj,jk ) * r1_e1e2t(ji,jj)
[5643]	360	END IF
[6140]	361	!
[12340]	362	END IF
	363	!
	364	END IF
	365	!
	366	ze3t_f = 1.e0 / ze3t_f
	367	pt(ji,jj,jk,jn,Kmm) = ztc_f * ze3t_f ! time filtered "now" field
	368	!
	369	IF( ( l_trdtra .and. cdtype == 'TRA' ) .OR. ( l_trdtrc .and. cdtype == 'TRC' ) ) THEN
	370	ztrd_atf(ji,jj,jk,jn) = (ztc_f - ztc_n) * zfact/ze3t_n
	371	ENDIF
	372	!
	373	END_3D
[12581]	374	!
[2528]	375	END DO
[503]	376	!
[9019]	377	IF( ( l_trdtra .AND. cdtype == 'TRA' ) .OR. ( l_trdtrc .AND. cdtype == 'TRC' ) ) THEN
[12581]	378	IF( l_trdtra .AND. cdtype == 'TRA' ) THEN
[11057]	379	CALL trd_tra( kt, Kmm, Kaa, cdtype, jp_tem, jptra_atf, ztrd_atf(:,:,:,jp_tem) )
	380	CALL trd_tra( kt, Kmm, Kaa, cdtype, jp_sal, jptra_atf, ztrd_atf(:,:,:,jp_sal) )
[9019]	381	ENDIF
	382	IF( l_trdtrc .AND. cdtype == 'TRC' ) THEN
	383	DO jn = 1, kjpt
[11057]	384	CALL trd_tra( kt, Kmm, Kaa, cdtype, jn, jptra_atf, ztrd_atf(:,:,:,jn) )
[9019]	385	END DO
	386	ENDIF
	387	DEALLOCATE( ztrd_atf )
[8698]	388	ENDIF
	389	!
[11057]	390	END SUBROUTINE tra_atf_vvl
[3]	391
	392	!!======================================================================
[11057]	393	END MODULE traatf

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