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step.F90 in NEMO/branches/2019/dev_r11943_MERGE_2019/src/OCE – NEMO

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source: NEMO/branches/2019/dev_r11943_MERGE_2019/src/OCE/step.F90 @ 12255

Last change on this file since 12255 was 12255, checked in by smasson, 4 years ago
rev12240_dev_r11943_MERGE_2019: bugfix in fldread offset in bdy, see #2263. all sette tests ok
Property svn:keywords set to `Id`
File size: 21.4 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
[9019]	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)
[11949]	33	!! 4.1 ! 2019-08 (A. Coward, D. Storkey) rewrite in preparation for new timestepping scheme
[3]	34	!!----------------------------------------------------------------------
[888]	35
	36	!!----------------------------------------------------------------------
[2528]	37	!! stp : OPA system time-stepping
[3]	38	!!----------------------------------------------------------------------
[3764]	39	USE step_oce ! time stepping definition modules
[6140]	40	!
	41	USE iom ! xIOs server
[389]	42
[3]	43	IMPLICIT NONE
	44	PRIVATE
	45
[5836]	46	PUBLIC stp ! called by nemogcm.F90
[3]	47
	48	!!----------------------------------------------------------------------
[11949]	49	!! time level indices
	50	!!----------------------------------------------------------------------
	51	INTEGER, PUBLIC :: Nbb, Nnn, Naa, Nrhs !! used by nemo_init
	52
	53	!!----------------------------------------------------------------------
[9598]	54	!! NEMO/OCE 4.0 , NEMO Consortium (2018)
[888]	55	!! $Id$
[10068]	56	!! Software governed by the CeCILL license (see ./LICENSE)
[3]	57	!!----------------------------------------------------------------------
	58	CONTAINS
	59
[508]	60	#if defined key_agrif
[5656]	61	RECURSIVE SUBROUTINE stp( )
[1438]	62	INTEGER :: kstp ! ocean time-step index
[508]	63	#else
[467]	64	SUBROUTINE stp( kstp )
[1438]	65	INTEGER, INTENT(in) :: kstp ! ocean time-step index
[467]	66	#endif
	67	!!----------------------------------------------------------------------
[3]	68	!! * ROUTINE stp *
[3764]	69	!!
[9019]	70	!! ** Purpose : - Time stepping of OPA (momentum and active tracer eqs.)
[9570]	71	!! - Time stepping of SI3 (dynamic and thermodynamic eqs.)
[9019]	72	!! - Time stepping of TRC (passive tracer eqs.)
[3764]	73	!!
	74	!! ** Method : -1- Update forcings and data
	75	!! -2- Update ocean physics
	76	!! -3- Compute the t and s trends
	77	!! -4- Update t and s
[3]	78	!! -5- Compute the momentum trends
	79	!! -6- Update the horizontal velocity
[5836]	80	!! -7- Compute the diagnostics variables (rd,N2, hdiv,w)
[3]	81	!! -8- Outputs and diagnostics
	82	!!----------------------------------------------------------------------
[9019]	83	INTEGER :: ji, jj, jk ! dummy loop indice
	84	INTEGER :: indic ! error indicator if < 0
	85	!!gm kcall can be removed, I guess
	86	INTEGER :: kcall ! optional integer argument (dom_vvl_sf_nxt)
[3]	87	!! ---------------------------------------------------------------------
[392]	88	#if defined key_agrif
[389]	89	kstp = nit000 + Agrif_Nb_Step()
[11949]	90	Kbb_a = Nbb; Kmm_a = Nnn; Krhs_a = Nrhs ! agrif_oce module copies of time level indices
[5836]	91	IF( lk_agrif_debug ) THEN
	92	IF( Agrif_Root() .and. lwp) WRITE(,) '---'
	93	IF(lwp) WRITE(,) 'Grid Number', Agrif_Fixed(),' time step ', kstp, 'int tstep', Agrif_NbStepint()
[5656]	94	ENDIF
[5836]	95	IF( kstp == nit000 + 1 ) lk_agrif_fstep = .FALSE.
[1793]	96	# if defined key_iomput
[5407]	97	IF( Agrif_Nbstepint() == 0 ) CALL iom_swap( cxios_context )
[3764]	98	# endif
	99	#endif
[9124]	100	!
	101	IF( ln_timing ) CALL timing_start('stp')
	102	!
[5836]	103	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	104	! update I/O and calendar
	105	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	106	indic = 0 ! reset to no error condition
	107
	108	IF( kstp == nit000 ) THEN ! initialize IOM context (must be done after nemo_init for AGRIF+XIOS+OASIS)
[12205]	109	CALL iom_init( cxios_context, ld_closedef=.FALSE. ) ! for model grid (including passible AGRIF zoom)
	110	IF( lk_diamlr ) CALL dia_mlr_iom_init ! with additional setup for multiple-linear-regression analysis
	111	CALL iom_init_closedef
[5836]	112	IF( ln_crs ) CALL iom_init( TRIM(cxios_context)//"_crs" ) ! for coarse grid
[4152]	113	ENDIF
[1725]	114	IF( kstp /= nit000 ) CALL day( kstp ) ! Calendar (day was already called at nit000 in day_init)
[5836]	115	CALL iom_setkt( kstp - nit000 + 1, cxios_context ) ! tell IOM we are at time step kstp
	116	IF( ln_crs ) CALL iom_setkt( kstp - nit000 + 1, TRIM(cxios_context)//"_crs" ) ! tell IOM we are at time step kstp
[3]	117
	118	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[12150]	119	! Update external forcing (tides, open boundaries, ice shelf interaction and surface boundary condition (including sea-ice)
[3]	120	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[12205]	121	IF( ln_tide ) CALL tide_update( kstp ) ! update tide potential
[11949]	122	IF( ln_apr_dyn ) CALL sbc_apr ( kstp ) ! atmospheric pressure (NB: call before bdy_dta which needs ssh_ib)
[12255]	123	IF( ln_bdy ) CALL bdy_dta ( kstp, Nnn ) ! update dynamic & tracer data at open boundaries
[12150]	124	IF( ln_isf ) CALL isf_stp ( kstp, Nnn )
[11949]	125	CALL sbc ( kstp, Nbb, Nnn ) ! Sea Boundary Condition (including sea-ice)
[5836]	126
[3]	127	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5329]	128	! Update stochastic parameters and random T/S fluctuations
	129	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[6464]	130	IF( ln_sto_eos ) CALL sto_par( kstp ) ! Stochastic parameters
[11949]	131	IF( ln_sto_eos ) CALL sto_pts( ts(:,:,:,:,Nnn) ) ! Random T/S fluctuations
[5329]	132
	133	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[9490]	134	! Ocean physics update
[3]	135	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[4990]	136	! THERMODYNAMICS
[11949]	137	CALL eos_rab( ts(:,:,:,:,Nbb), rab_b, Nnn ) ! before local thermal/haline expension ratio at T-points
	138	CALL eos_rab( ts(:,:,:,:,Nnn), rab_n, Nnn ) ! now local thermal/haline expension ratio at T-points
	139	CALL bn2 ( ts(:,:,:,:,Nbb), rab_b, rn2b, Nnn ) ! before Brunt-Vaisala frequency
	140	CALL bn2 ( ts(:,:,:,:,Nnn), rab_n, rn2, Nnn ) ! now Brunt-Vaisala frequency
[5836]	141
[3764]	142	! VERTICAL PHYSICS
[11949]	143	CALL zdf_phy( kstp, Nbb, Nnn, Nrhs ) ! vertical physics update (top/bot drag, avt, avs, avm + MLD)
[5836]	144
[3764]	145	! LATERAL PHYSICS
[1492]	146	!
[5836]	147	IF( l_ldfslp ) THEN ! slope of lateral mixing
[11949]	148	CALL eos( ts(:,:,:,:,Nbb), rhd, gdept_0(:,:,:) ) ! before in situ density
[5836]	149
[11949]	150	IF( ln_zps .AND. .NOT. ln_isfcav) &
	151	& CALL zps_hde ( kstp, Nnn, jpts, ts(:,:,:,:,Nbb), gtsu, gtsv, & ! Partial steps: before horizontal gradient
	152	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
[5836]	153
[11949]	154	IF( ln_zps .AND. ln_isfcav) &
	155	& CALL zps_hde_isf( kstp, Nnn, jpts, ts(:,:,:,:,Nbb), gtsu, gtsv, gtui, gtvi, & ! Partial steps for top cell (ISF)
	156	& rhd, gru , grv , grui, grvi ) ! of t, s, rd at the first ocean level
[5836]	157	IF( ln_traldf_triad ) THEN
[11949]	158	CALL ldf_slp_triad( kstp, Nbb, Nnn ) ! before slope for triad operator
[5836]	159	ELSE
[11949]	160	CALL ldf_slp ( kstp, rhd, rn2b, Nbb, Nnn ) ! before slope for standard operator
[2528]	161	ENDIF
[1481]	162	ENDIF
[11949]	163	! ! eddy diffusivity coeff.
	164	IF( l_ldftra_time .OR. l_ldfeiv_time ) CALL ldf_tra( kstp, Nbb, Nnn ) ! and/or eiv coeff.
	165	IF( l_ldfdyn_time ) CALL ldf_dyn( kstp, Nbb ) ! eddy viscosity coeff.
[3]	166
[4369]	167	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5930]	168	! Ocean dynamics : hdiv, ssh, e3, u, v, w
[4369]	169	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5930]	170
[11949]	171	CALL ssh_nxt ( kstp, Nbb, Nnn, ssh, Naa ) ! after ssh (includes call to div_hor)
	172	IF( .NOT.ln_linssh ) CALL dom_vvl_sf_nxt( kstp, Nbb, Nnn, Naa ) ! after vertical scale factors
	173	CALL wzv ( kstp, Nbb, Nnn, ww, Naa ) ! now cross-level velocity
	174	IF( ln_zad_Aimp ) CALL wAimp ( kstp, Nnn ) ! Adaptive-implicit vertical advection partitioning
	175	CALL eos ( ts(:,:,:,:,Nnn), rhd, rhop, gdept(:,:,:,Nnn) ) ! now in situ density for hpg computation
[6140]	176
[7753]	177
[11949]	178	uu(:,:,:,Nrhs) = 0._wp ! set dynamics trends to zero
	179	vv(:,:,:,Nrhs) = 0._wp
[4369]	180
[5930]	181	IF( lk_asminc .AND. ln_asmiau .AND. ln_dyninc ) &
[11949]	182	& CALL dyn_asm_inc ( kstp, Nbb, Nnn, uu, vv, Nrhs ) ! apply dynamics assimilation increment
	183	IF( ln_bdy ) CALL bdy_dyn3d_dmp ( kstp, Nbb, uu, vv, Nrhs ) ! bdy damping trends
[4369]	184	#if defined key_agrif
[5930]	185	IF(.NOT. Agrif_Root()) &
	186	& CALL Agrif_Sponge_dyn ! momentum sponge
[4369]	187	#endif
[11949]	188	CALL dyn_adv( kstp, Nbb, Nnn , uu, vv, Nrhs ) ! advection (VF or FF) ==> RHS
	189	CALL dyn_vor( kstp, Nnn , uu, vv, Nrhs ) ! vorticity ==> RHS
	190	CALL dyn_ldf( kstp, Nbb, Nnn , uu, vv, Nrhs ) ! lateral mixing
	191	IF( ln_zdfosm ) CALL dyn_osm( kstp, Nnn , uu, vv, Nrhs ) ! OSMOSIS non-local velocity fluxes ==> RHS
	192	CALL dyn_hpg( kstp, Nnn , uu, vv, Nrhs ) ! horizontal gradient of Hydrostatic pressure
	193	CALL dyn_spg( kstp, Nbb, Nnn, Nrhs, uu, vv, ssh, uu_b, vv_b, Naa ) ! surface pressure gradient
[4369]	194
[11949]	195	! With split-explicit free surface, since now transports have been updated and ssh(:,:,Nrhs) as well
[5930]	196	IF( ln_dynspg_ts ) THEN ! vertical scale factors and vertical velocity need to be updated
[11949]	197	CALL div_hor ( kstp, Nbb, Nnn ) ! Horizontal divergence (2nd call in time-split case)
	198	IF(.NOT.ln_linssh) CALL dom_vvl_sf_nxt( kstp, Nbb, Nnn, Naa, kcall=2 ) ! after vertical scale factors (update depth average component)
[11287]	199	ENDIF
[12193]	200	CALL dyn_zdf ( kstp, Nbb, Nnn, Nrhs, uu, vv, Naa ) ! vertical diffusion
	201	IF( ln_dynspg_ts ) THEN ! vertical scale factors and vertical velocity need to be updated
	202	CALL wzv ( kstp, Nbb, Nnn, ww, Naa ) ! now cross-level velocity
	203	IF( ln_zad_Aimp ) CALL wAimp ( kstp, Nnn ) ! Adaptive-implicit vertical advection partitioning
[4369]	204	ENDIF
[11949]	205
[5930]	206
[1482]	207	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[6140]	208	! cool skin
	209	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[11949]	210	IF ( ln_diurnal ) CALL diurnal_layers( kstp )
[6140]	211
	212	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[9490]	213	! diagnostics and outputs
[1482]	214	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[12205]	215	IF( ln_floats ) CALL flo_stp ( kstp, Nbb, Nnn ) ! drifting Floats
	216	IF( ln_diacfl ) CALL dia_cfl ( kstp, Nnn ) ! Courant number diagnostics
	217	CALL dia_hth ( kstp, Nnn ) ! Thermocline depth (20 degres isotherm depth)
	218	IF( ln_diadct ) CALL dia_dct ( kstp, Nnn ) ! Transports
	219	CALL dia_ar5 ( kstp, Nnn ) ! ar5 diag
	220	CALL dia_ptr ( kstp, Nnn ) ! Poleward adv/ldf TRansports diagnostics
	221	CALL dia_wri ( kstp, Nnn ) ! ocean model: outputs
	222	IF( ln_crs ) CALL crs_fld ( kstp, Nnn ) ! ocean model: online field coarsening & output
	223	IF( lk_diadetide ) CALL dia_detide( kstp ) ! Weights computation for daily detiding of model diagnostics
	224	IF( lk_diamlr ) CALL dia_mlr ! Update time used in multiple-linear-regression analysis
[6140]	225
[923]	226	#if defined key_top
[3]	227	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	228	! Passive Tracer Model
	229	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[11949]	230	CALL trc_stp ( kstp, Nbb, Nnn, Nrhs, Naa ) ! time-stepping
[3]	231	#endif
	232
	233	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5930]	234	! Active tracers
[3]	235	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[11949]	236	ts(:,:,:,:,Nrhs) = 0._wp ! set tracer trends to zero
[3]	237
[5656]	238	IF( lk_asminc .AND. ln_asmiau .AND. &
[11949]	239	& ln_trainc ) CALL tra_asm_inc( kstp, Nbb, Nnn, ts, Nrhs ) ! apply tracer assimilation increment
	240	CALL tra_sbc ( kstp, Nnn, ts, Nrhs ) ! surface boundary condition
	241	IF( ln_traqsr ) CALL tra_qsr ( kstp, Nnn, ts, Nrhs ) ! penetrative solar radiation qsr
[12150]	242	IF( ln_isf ) CALL tra_isf ( kstp, Nnn, ts, Nrhs ) ! ice shelf heat flux
[11949]	243	IF( ln_trabbc ) CALL tra_bbc ( kstp, Nnn, ts, Nrhs ) ! bottom heat flux
	244	IF( ln_trabbl ) CALL tra_bbl ( kstp, Nbb, Nnn, ts, Nrhs ) ! advective (and/or diffusive) bottom boundary layer scheme
	245	IF( ln_tradmp ) CALL tra_dmp ( kstp, Nbb, Nnn, ts, Nrhs ) ! internal damping trends
	246	IF( ln_bdy ) CALL bdy_tra_dmp( kstp, Nbb, ts, Nrhs ) ! bdy damping trends
[392]	247	#if defined key_agrif
[5930]	248	IF(.NOT. Agrif_Root()) &
	249	& CALL Agrif_Sponge_tra ! tracers sponge
[389]	250	#endif
[11949]	251	CALL tra_adv ( kstp, Nbb, Nnn, ts, Nrhs ) ! hor. + vert. advection ==> RHS
	252	IF( ln_zdfosm ) CALL tra_osm ( kstp, Nnn, ts, Nrhs ) ! OSMOSIS non-local tracer fluxes ==> RHS
[9019]	253	IF( lrst_oce .AND. ln_zdfosm ) &
[11949]	254	& CALL osm_rst ( kstp, Nnn, 'WRITE' ) ! write OSMOSIS outputs + ww (so must do here) to restarts
	255	CALL tra_ldf ( kstp, Nbb, Nnn, ts, Nrhs ) ! lateral mixing
[1239]	256
[12193]	257	CALL tra_zdf ( kstp, Nbb, Nnn, Nrhs, ts, Naa ) ! vertical mixing and after tracer fields
[11949]	258	IF( ln_zdfnpc ) CALL tra_npc ( kstp, Nnn, Nrhs, ts, Naa ) ! update after fields by non-penetrative convection
[1481]	259
[3]	260	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[11949]	261	! Set boundary conditions, time filter and swap time levels
[3]	262	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5930]	263	!!jc1: For agrif, it would be much better to finalize tracers/momentum here (e.g. bdy conditions) and move the swap
	264	!! (and time filtering) after Agrif update. Then restart would be done after and would contain updated fields.
	265	!! If so:
	266	!! (i) no need to call agrif update at initialization time
	267	!! (ii) no need to update "before" fields
	268	!!
	269	!! Apart from creating new tra_swp/dyn_swp routines, this however:
	270	!! (i) makes boundary conditions at initialization time computed from updated fields which is not the case between
	271	!! two restarts => restartability issue. One can circumvent this, maybe, by assuming "interface separation",
	272	!! e.g. a shift of the feedback interface inside child domain.
	273	!! (ii) requires that all restart outputs of updated variables by agrif (e.g. passive tracers/tke/barotropic arrays) are done at the same
	274	!! place.
	275	!!
[11949]	276	!!jc2: dynnxt must be the latest call. e3t(:,:,:,Nbb) are indeed updated in that routine
	277	CALL tra_atf ( kstp, Nbb, Nnn, Naa, ts ) ! time filtering of "now" tracer arrays
	278	CALL dyn_atf ( kstp, Nbb, Nnn, Naa, uu, vv, e3t, e3u, e3v ) ! time filtering of "now" velocities and scale factors
	279	CALL ssh_atf ( kstp, Nbb, Nnn, Naa, ssh ) ! time filtering of "now" sea surface height
[5656]	280	!
[11949]	281	! Swap time levels
	282	Nrhs = Nbb
	283	Nbb = Nnn
	284	Nnn = Naa
	285	Naa = Nrhs
	286	!
	287	IF(.NOT.ln_linssh) CALL dom_vvl_sf_update( kstp, Nbb, Nnn, Naa ) ! recompute vertical scale factors
	288	!
	289	IF( ln_diahsb ) CALL dia_hsb ( kstp, Nbb, Nnn ) ! - ML - global conservation diagnostics
[5836]	290
	291	!!gm : This does not only concern the dynamics ==>>> add a new title
	292	!!gm2: why ouput restart before AGRIF update?
[5930]	293	!!
	294	!!jc: That would be better, but see comment above
	295	!!
[11949]	296	IF( lrst_oce ) CALL rst_write ( kstp, Nbb, Nnn ) ! write output ocean restart file
[9210]	297	IF( ln_sto_eos ) CALL sto_rst_write( kstp ) ! write restart file for stochastic parameters
[593]	298
[5656]	299	#if defined key_agrif
	300	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	301	! AGRIF
	302	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[11949]	303	Kbb_a = Nbb; Kmm_a = Nnn; Krhs_a = Nrhs ! agrif_oce module copies of time level indices
	304	CALL Agrif_Integrate_ChildGrids( stp ) ! allows to finish all the Child Grids before updating
[5656]	305
[11949]	306	IF( Agrif_NbStepint() == 0 ) THEN
	307	CALL Agrif_update_all( ) ! Update all components
	308	ENDIF
[9485]	309	#endif
[11949]	310	IF( ln_diaobs ) CALL dia_obs ( kstp, Nnn ) ! obs-minus-model (assimilation) diagnostics (call after dynamics update)
[2528]	311
[3]	312	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[5656]	313	! Control
[3]	314	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[11949]	315	CALL stp_ctl ( kstp, Nbb, Nnn, indic )
[9210]	316
	317	IF( kstp == nit000 ) THEN ! 1st time step only
	318	CALL iom_close( numror ) ! close input ocean restart file
	319	IF(lwm) CALL FLUSH ( numond ) ! flush output namelist oce
	320	IF(lwm .AND. numoni /= -1 ) CALL FLUSH ( numoni ) ! flush output namelist ice (if exist)
[1482]	321	ENDIF
[3]	322
[508]	323	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[75]	324	! Coupled mode
	325	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[5836]	326	!!gm why lk_oasis and not lk_cpl ????
[11949]	327	IF( lk_oasis ) CALL sbc_cpl_snd( kstp, Nbb, Nnn ) ! coupled mode : field exchanges
[508]	328	!
[4153]	329	#if defined key_iomput
	330	IF( kstp == nitend .OR. indic < 0 ) THEN
[5407]	331	CALL iom_context_finalize( cxios_context ) ! needed for XIOS+AGRIF
[9367]	332	IF(lrxios) CALL iom_context_finalize( crxios_context )
[5407]	333	IF( ln_crs ) CALL iom_context_finalize( trim(cxios_context)//"_crs" ) !
[4152]	334	ENDIF
[4153]	335	#endif
[3769]	336	!
[9210]	337	IF( ln_timing ) CALL timing_stop('stp')
[1481]	338	!
[3]	339	END SUBROUTINE stp
[11949]	340	!
[9019]	341	!!======================================================================
[3]	342	END MODULE step

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