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step.F90 @ 8214

Last change on this file since 8214 was 8214, checked in by gm, 7 years ago
#1883 (HPC-09) - correction of minor issues
Property svn:keywords set to `Id`
File size: 19.6 KB

Rev	Line
[3]	1	MODULE step
	2	!!======================================================================
	3	!! * MODULE step *
[6140]	4	!! Time-stepping : manager of the ocean, tracer and ice time stepping
[3]	5	!!======================================================================
[1438]	6	!! History : OPA ! 1991-03 (G. Madec) Original code
[1492]	7	!! - ! 1991-11 (G. Madec)
	8	!! - ! 1992-06 (M. Imbard) add a first output record
	9	!! - ! 1996-04 (G. Madec) introduction of dynspg
	10	!! - ! 1996-04 (M.A. Foujols) introduction of passive tracer
[1438]	11	!! 8.0 ! 1997-06 (G. Madec) new architecture of call
	12	!! 8.2 ! 1997-06 (G. Madec, M. Imbard, G. Roullet) free surface
	13	!! - ! 1999-02 (G. Madec, N. Grima) hpg implicit
	14	!! - ! 2000-07 (J-M Molines, M. Imbard) Open Bondary Conditions
	15	!! NEMO 1.0 ! 2002-06 (G. Madec) free form, suppress macro-tasking
	16	!! - ! 2004-08 (C. Talandier) New trends organization
[1492]	17	!! - ! 2005-01 (C. Ethe) Add the KPP closure scheme
	18	!! - ! 2005-11 (G. Madec) Reorganisation of tra and dyn calls
	19	!! - ! 2006-01 (L. Debreu, C. Mazauric) Agrif implementation
	20	!! - ! 2006-07 (S. Masson) restart using iom
[1438]	21	!! 3.2 ! 2009-02 (G. Madec, R. Benshila) reintroduicing z*-coordinate
[1533]	22	!! - ! 2009-06 (S. Masson, G. Madec) TKE restart compatible with key_cpl
[2528]	23	!! 3.3 ! 2010-05 (K. Mogensen, A. Weaver, M. Martin, D. Lea) Assimilation interface
	24	!! - ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase + merge TRC-TRA
[3294]	25	!! 3.4 ! 2011-04 (G. Madec, C. Ethe) Merge of dtatem and dtasal
[5836]	26	!! 3.6 ! 2012-07 (J. Simeon, G. Madec. C. Ethe) Online coarsening of outputs
	27	!! 3.6 ! 2014-04 (F. Roquet, G. Madec) New equations of state
[7646]	28	!! 3.6 ! 2014-10 (E. Clementi, P. Oddo) Add Qiao vertical mixing in case of waves
[5836]	29	!! 3.7 ! 2014-10 (G. Madec) LDF simplication
	30	!! - ! 2014-12 (G. Madec) remove KPP scheme
[8178]	31	!! - ! 2015-11 (J. Chanut) free surface simplification (remove filtered free surface)
	32	!! 4.0 ! 2017-05 (G. Madec) introduction of the vertical physics manager (zdfphy)
[3]	33	!!----------------------------------------------------------------------
[888]	34
	35	!!----------------------------------------------------------------------
[2528]	36	!! stp : OPA system time-stepping
[3]	37	!!----------------------------------------------------------------------
[3764]	38	USE step_oce ! time stepping definition modules
[6140]	39	!
	40	USE iom ! xIOs server
[389]	41
[3]	42	IMPLICIT NONE
	43	PRIVATE
	44
[5836]	45	PUBLIC stp ! called by nemogcm.F90
[3]	46
	47	!!----------------------------------------------------------------------
[8178]	48	!! NEMO/OPA 4.0 , NEMO Consortium (2017)
[888]	49	!! $Id$
[2528]	50	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[3]	51	!!----------------------------------------------------------------------
	52	CONTAINS
	53
[508]	54	#if defined key_agrif
[5656]	55	RECURSIVE SUBROUTINE stp( )
[1438]	56	INTEGER :: kstp ! ocean time-step index
[508]	57	#else
[467]	58	SUBROUTINE stp( kstp )
[1438]	59	INTEGER, INTENT(in) :: kstp ! ocean time-step index
[467]	60	#endif
	61	!!----------------------------------------------------------------------
[3]	62	!! * ROUTINE stp *
[3764]	63	!!
[3]	64	!! ** Purpose : - Time stepping of OPA (momentum and active tracer eqs.)
	65	!! - Time stepping of LIM (dynamic and thermodynamic eqs.)
	66	!! - Tme stepping of TRC (passive tracer eqs.)
[3764]	67	!!
	68	!! ** Method : -1- Update forcings and data
	69	!! -2- Update ocean physics
	70	!! -3- Compute the t and s trends
	71	!! -4- Update t and s
[3]	72	!! -5- Compute the momentum trends
	73	!! -6- Update the horizontal velocity
[5836]	74	!! -7- Compute the diagnostics variables (rd,N2, hdiv,w)
[3]	75	!! -8- Outputs and diagnostics
	76	!!----------------------------------------------------------------------
[7953]	77	INTEGER :: ji, jj, jk ! dummy loop indice
	78	INTEGER :: indic ! error indicator if < 0
	79	INTEGER :: kcall ! optional integer argument (dom_vvl_sf_nxt)
[3]	80	!! ---------------------------------------------------------------------
[392]	81	#if defined key_agrif
[389]	82	kstp = nit000 + Agrif_Nb_Step()
[5836]	83	IF( lk_agrif_debug ) THEN
	84	IF( Agrif_Root() .and. lwp) WRITE(,) '---'
	85	IF(lwp) WRITE(,) 'Grid Number', Agrif_Fixed(),' time step ', kstp, 'int tstep', Agrif_NbStepint()
[5656]	86	ENDIF
[5836]	87	IF( kstp == nit000 + 1 ) lk_agrif_fstep = .FALSE.
[1793]	88	# if defined key_iomput
[5407]	89	IF( Agrif_Nbstepint() == 0 ) CALL iom_swap( cxios_context )
[3764]	90	# endif
	91	#endif
[5836]	92	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	93	! update I/O and calendar
	94	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	95	indic = 0 ! reset to no error condition
	96
	97	IF( kstp == nit000 ) THEN ! initialize IOM context (must be done after nemo_init for AGRIF+XIOS+OASIS)
	98	CALL iom_init( cxios_context ) ! for model grid (including passible AGRIF zoom)
	99	IF( ln_crs ) CALL iom_init( TRIM(cxios_context)//"_crs" ) ! for coarse grid
[4152]	100	ENDIF
[1725]	101	IF( kstp /= nit000 ) CALL day( kstp ) ! Calendar (day was already called at nit000 in day_init)
[5836]	102	CALL iom_setkt( kstp - nit000 + 1, cxios_context ) ! tell IOM we are at time step kstp
	103	IF( ln_crs ) CALL iom_setkt( kstp - nit000 + 1, TRIM(cxios_context)//"_crs" ) ! tell IOM we are at time step kstp
[3]	104
	105	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5836]	106	! Update external forcing (tides, open boundaries, and surface boundary condition (including sea-ice)
[3]	107	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[7646]	108	IF( ln_tide ) CALL sbc_tide( kstp ) ! update tide potential
[5836]	109	IF( ln_apr_dyn ) CALL sbc_apr ( kstp ) ! atmospheric pressure (NB: call before bdy_dta which needs ssh_ib)
[7646]	110	IF( ln_bdy ) CALL bdy_dta ( kstp, time_offset=+1 ) ! update dynamic & tracer data at open boundaries
[5836]	111	CALL sbc ( kstp ) ! Sea Boundary Condition (including sea-ice)
	112
[3]	113	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5329]	114	! Update stochastic parameters and random T/S fluctuations
	115	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[6464]	116	IF( ln_sto_eos ) CALL sto_par( kstp ) ! Stochastic parameters
	117	IF( ln_sto_eos ) CALL sto_pts( tsn ) ! Random T/S fluctuations
[5329]	118
	119	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[3294]	120	! Ocean physics update (ua, va, tsa used as workspace)
[3]	121	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[4990]	122	! THERMODYNAMICS
	123	CALL eos_rab( tsb, rab_b ) ! before local thermal/haline expension ratio at T-points
	124	CALL eos_rab( tsn, rab_n ) ! now local thermal/haline expension ratio at T-points
	125	CALL bn2 ( tsb, rab_b, rn2b ) ! before Brunt-Vaisala frequency
	126	CALL bn2 ( tsn, rab_n, rn2 ) ! now Brunt-Vaisala frequency
[5836]	127
[3764]	128	! VERTICAL PHYSICS
[8143]	129	CALL zdf_phy( kstp ) ! vertical physics update (top/bot drag, avt, avs, avm + MLD)
[3]	130
[3764]	131	! LATERAL PHYSICS
[1492]	132	!
[5836]	133	IF( l_ldfslp ) THEN ! slope of lateral mixing
[5120]	134	CALL eos( tsb, rhd, gdept_0(:,:,:) ) ! before in situ density
[5836]	135
[5120]	136	IF( ln_zps .AND. .NOT. ln_isfcav) &
	137	& CALL zps_hde ( kstp, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient
	138	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
[5836]	139
[5120]	140	IF( ln_zps .AND. ln_isfcav) &
[6140]	141	& CALL zps_hde_isf( kstp, jpts, tsb, gtsu, gtsv, gtui, gtvi, & ! Partial steps for top cell (ISF)
	142	& rhd, gru , grv , grui, grvi ) ! of t, s, rd at the first ocean level
[5836]	143	IF( ln_traldf_triad ) THEN
	144	CALL ldf_slp_triad( kstp ) ! before slope for triad operator
	145	ELSE
	146	CALL ldf_slp ( kstp, rhd, rn2b ) ! before slope for standard operator
[2528]	147	ENDIF
[1481]	148	ENDIF
[6381]	149	! ! eddy diffusivity coeff.
	150	IF( l_ldftra_time .OR. l_ldfeiv_time ) CALL ldf_tra( kstp ) ! and/or eiv coeff.
	151	IF( l_ldfdyn_time ) CALL ldf_dyn( kstp ) ! eddy viscosity coeff.
[3]	152
[4369]	153	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5930]	154	! Ocean dynamics : hdiv, ssh, e3, u, v, w
[4369]	155	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5930]	156
[6140]	157	CALL ssh_nxt ( kstp ) ! after ssh (includes call to div_hor)
	158	IF(.NOT.ln_linssh ) CALL dom_vvl_sf_nxt( kstp ) ! after vertical scale factors
	159	CALL wzv ( kstp ) ! now cross-level velocity
	160	CALL eos ( tsn, rhd, rhop, gdept_n(:,:,:) ) ! now in situ density for hpg computation
	161
[5930]	162	!!jc: fs simplification
[6140]	163	!!jc: lines below are useless if ln_linssh=F. Keep them here (which maintains a bug if ln_linssh=T and ln_zps=T, cf ticket #1636)
[5930]	164	!! but ensures reproductible results
	165	!! with previous versions using split-explicit free surface
[6140]	166	IF( ln_zps .AND. .NOT. ln_isfcav ) &
	167	& CALL zps_hde ( kstp, jpts, tsn, gtsu, gtsv, & ! Partial steps: before horizontal gradient
	168	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
	169	IF( ln_zps .AND. ln_isfcav ) &
	170	& CALL zps_hde_isf( kstp, jpts, tsn, gtsu, gtsv, gtui, gtvi, & ! Partial steps for top cell (ISF)
	171	& rhd, gru , grv , grui, grvi ) ! of t, s, rd at the first ocean level
[5930]	172	!!jc: fs simplification
[7753]	173
	174	ua(:,:,:) = 0._wp ! set dynamics trends to zero
	175	va(:,:,:) = 0._wp
[4369]	176
[5930]	177	IF( lk_asminc .AND. ln_asmiau .AND. ln_dyninc ) &
[6381]	178	& CALL dyn_asm_inc ( kstp ) ! apply dynamics assimilation increment
[7646]	179	IF( ln_bdy ) CALL bdy_dyn3d_dmp ( kstp ) ! bdy damping trends
[4369]	180	#if defined key_agrif
[5930]	181	IF(.NOT. Agrif_Root()) &
	182	& CALL Agrif_Sponge_dyn ! momentum sponge
[4369]	183	#endif
[5930]	184	CALL dyn_adv ( kstp ) ! advection (vector or flux form)
	185	CALL dyn_vor ( kstp ) ! vorticity term including Coriolis
	186	CALL dyn_ldf ( kstp ) ! lateral mixing
	187	CALL dyn_hpg ( kstp ) ! horizontal gradient of Hydrostatic pressure
	188	CALL dyn_spg ( kstp ) ! surface pressure gradient
[4369]	189
[5930]	190	! With split-explicit free surface, since now transports have been updated and ssha as well
	191	IF( ln_dynspg_ts ) THEN ! vertical scale factors and vertical velocity need to be updated
	192	CALL div_hor ( kstp ) ! Horizontal divergence (2nd call in time-split case)
[6140]	193	IF(.NOT.ln_linssh) CALL dom_vvl_sf_nxt( kstp, kcall=2 ) ! after vertical scale factors (update depth average component)
[5930]	194	CALL wzv ( kstp ) ! now cross-level velocity
[4369]	195	ENDIF
	196
[8214]	197	IF( .NOT.ln_drgimp) CALL dyn_bfr ( kstp ) ! bottom friction
[8143]	198
[5930]	199	CALL dyn_zdf ( kstp ) ! vertical diffusion
	200
[1482]	201	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[6140]	202	! cool skin
	203	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	204	IF ( ln_diurnal ) CALL stp_diurnal( kstp )
	205
	206	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	207	! diagnostics and outputs (ua, va, tsa used as workspace)
[1482]	208	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[6140]	209	IF( lk_floats ) CALL flo_stp( kstp ) ! drifting Floats
	210	IF( nn_diacfl == 1 ) CALL dia_cfl( kstp ) ! Courant number diagnostics
	211	IF( lk_diahth ) CALL dia_hth( kstp ) ! Thermocline depth (20 degres isotherm depth)
	212	IF( lk_diadct ) CALL dia_dct( kstp ) ! Transports
[7646]	213	CALL dia_ar5( kstp ) ! ar5 diag
[6140]	214	IF( lk_diaharm ) CALL dia_harm( kstp ) ! Tidal harmonic analysis
	215	CALL dia_wri( kstp ) ! ocean model: outputs
[4152]	216	!
[5930]	217	IF( ln_crs ) CALL crs_fld ( kstp ) ! ocean model: online field coarsening & output
[6140]	218
[923]	219	#if defined key_top
[3]	220	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	221	! Passive Tracer Model
	222	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5930]	223	CALL trc_stp ( kstp ) ! time-stepping
[3]	224	#endif
	225
	226	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5930]	227	! Active tracers
[3]	228	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[7753]	229	tsa(:,:,:,:) = 0._wp ! set tracer trends to zero
[3]	230
[5656]	231	IF( lk_asminc .AND. ln_asmiau .AND. &
[5930]	232	& ln_trainc ) CALL tra_asm_inc ( kstp ) ! apply tracer assimilation increment
	233	CALL tra_sbc ( kstp ) ! surface boundary condition
	234	IF( ln_traqsr ) CALL tra_qsr ( kstp ) ! penetrative solar radiation qsr
	235	IF( ln_trabbc ) CALL tra_bbc ( kstp ) ! bottom heat flux
[7954]	236	IF( ln_trabbl ) CALL tra_bbl ( kstp ) ! advective (and/or diffusive) bottom boundary layer scheme
[5930]	237	IF( ln_tradmp ) CALL tra_dmp ( kstp ) ! internal damping trends
[7646]	238	IF( ln_bdy ) CALL bdy_tra_dmp ( kstp ) ! bdy damping trends
[392]	239	#if defined key_agrif
[5930]	240	IF(.NOT. Agrif_Root()) &
	241	& CALL Agrif_Sponge_tra ! tracers sponge
[389]	242	#endif
[5930]	243	CALL tra_adv ( kstp ) ! horizontal & vertical advection
	244	CALL tra_ldf ( kstp ) ! lateral mixing
[1239]	245
[5930]	246	!!gm : why CALL to dia_ptr has been moved here??? (use trends info?)
	247	IF( ln_diaptr ) CALL dia_ptr ! Poleward adv/ldf TRansports diagnostics
[5836]	248	!!gm
[5930]	249	CALL tra_zdf ( kstp ) ! vertical mixing and after tracer fields
	250	IF( ln_zdfnpc ) CALL tra_npc ( kstp ) ! update after fields by non-penetrative convection
[1481]	251
[3]	252	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5930]	253	! Set boundary conditions and Swap
[3]	254	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5930]	255	!!jc1: For agrif, it would be much better to finalize tracers/momentum here (e.g. bdy conditions) and move the swap
	256	!! (and time filtering) after Agrif update. Then restart would be done after and would contain updated fields.
	257	!! If so:
	258	!! (i) no need to call agrif update at initialization time
	259	!! (ii) no need to update "before" fields
	260	!!
	261	!! Apart from creating new tra_swp/dyn_swp routines, this however:
	262	!! (i) makes boundary conditions at initialization time computed from updated fields which is not the case between
	263	!! two restarts => restartability issue. One can circumvent this, maybe, by assuming "interface separation",
	264	!! e.g. a shift of the feedback interface inside child domain.
	265	!! (ii) requires that all restart outputs of updated variables by agrif (e.g. passive tracers/tke/barotropic arrays) are done at the same
	266	!! place.
	267	!!
[6140]	268	!!jc2: dynnxt must be the latest call. e3t_b are indeed updated in that routine
[5930]	269	CALL tra_nxt ( kstp ) ! finalize (bcs) tracer fields at next time step and swap
	270	CALL dyn_nxt ( kstp ) ! finalize (bcs) velocities at next time step and swap
	271	CALL ssh_swp ( kstp ) ! swap of sea surface height
[6140]	272	IF(.NOT.ln_linssh) CALL dom_vvl_sf_swp( kstp ) ! swap of vertical scale factors
[5656]	273	!
[7646]	274	IF( ln_diahsb ) CALL dia_hsb( kstp ) ! - ML - global conservation diagnostics
[5836]	275
	276	!!gm : This does not only concern the dynamics ==>>> add a new title
	277	!!gm2: why ouput restart before AGRIF update?
[5930]	278	!!
	279	!!jc: That would be better, but see comment above
	280	!!
[6464]	281	IF( lrst_oce ) CALL rst_write ( kstp ) ! write output ocean restart file
	282	IF( ln_sto_eos ) CALL sto_rst_write( kstp ) ! write restart file for stochastic parameters
[593]	283
[5656]	284	#if defined key_agrif
	285	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	286	! AGRIF
	287	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5930]	288	CALL Agrif_Integrate_ChildGrids( stp )
[5656]	289
[6140]	290	IF( Agrif_NbStepint() == 0 ) THEN ! AGRIF Update
	291	!!jc in fact update is useless at last time step, but do it for global diagnostics
[5930]	292	CALL Agrif_Update_Tra() ! Update active tracers
	293	CALL Agrif_Update_Dyn() ! Update momentum
[5656]	294	ENDIF
	295	#endif
[6140]	296	IF( ln_diaobs ) CALL dia_obs( kstp ) ! obs-minus-model (assimilation) diagnostics (call after dynamics update)
[2528]	297
[3]	298	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5656]	299	! Control
[3]	300	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5930]	301	CALL stp_ctl ( kstp, indic )
[6140]	302	IF( indic < 0 ) THEN
[5930]	303	CALL ctl_stop( 'step: indic < 0' )
	304	CALL dia_wri_state( 'output.abort', kstp )
[1482]	305	ENDIF
[6140]	306	IF( kstp == nit000 ) THEN
[4624]	307	CALL iom_close( numror ) ! close input ocean restart file
	308	IF(lwm) CALL FLUSH ( numond ) ! flush output namelist oce
[5836]	309	IF(lwm.AND.numoni /= -1 ) &
	310	& CALL FLUSH ( numoni ) ! flush output namelist ice (if exist)
[4147]	311	ENDIF
[3]	312
[508]	313	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[75]	314	! Coupled mode
	315	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5836]	316	!!gm why lk_oasis and not lk_cpl ????
[5930]	317	IF( lk_oasis ) CALL sbc_cpl_snd( kstp ) ! coupled mode : field exchanges
[508]	318	!
[4153]	319	#if defined key_iomput
	320	IF( kstp == nitend .OR. indic < 0 ) THEN
[5407]	321	CALL iom_context_finalize( cxios_context ) ! needed for XIOS+AGRIF
	322	IF( ln_crs ) CALL iom_context_finalize( trim(cxios_context)//"_crs" ) !
[4152]	323	ENDIF
[4153]	324	#endif
[3769]	325	!
[3294]	326	IF( nn_timing == 1 .AND. kstp == nit000 ) CALL timing_reset
[1481]	327	!
[3]	328	END SUBROUTINE stp
[6140]	329
[8160]	330	!!======================================================================
[3]	331	END MODULE step

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