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source: trunk/NEMO/OPA_SRC/step.F90 @ 827

Last change on this file since 827 was 789, checked in by rblod, 17 years ago
Suppress jki routines and associated key_mpp_omp
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 23.2 KB

Rev	Line
[3]	1	MODULE step
	2	!!======================================================================
	3	!! * MODULE step *
	4	!! Time-stepping : manager of the ocean, tracer and ice time stepping
	5	!!======================================================================
[719]	6	!! History : ! 91-03 () Original code
	7	!! ! 91-11 (G. Madec)
[508]	8	!! ! 92-06 (M. Imbard) add a first output record
	9	!! ! 96-04 (G. Madec) introduction of dynspg
	10	!! ! 96-04 (M.A. Foujols) introduction of passive tracer
	11	!! 8.0 ! 97-06 (G. Madec) new architecture of call
	12	!! 8.2 ! 97-06 (G. Madec, M. Imbard, G. Roullet) free surface
	13	!! 8.2 ! 99-02 (G. Madec, N. Grima) hpg implicit
	14	!! 8.2 ! 00-07 (J-M Molines, M. Imbard) Open Bondary Conditions
	15	!! 9.0 ! 02-06 (G. Madec) free form, suppress macro-tasking
	16	!! " " ! 04-08 (C. Talandier) New trends organization
	17	!! " " ! 05-01 (C. Ethe) Add the KPP closure scheme
	18	!! " " ! 05-11 (V. Garnier) Surface pressure gradient organization
	19	!! " " ! 05-11 (G. Madec) Reorganisation of tra and dyn calls
	20	!! " " ! 06-01 (L. Debreu, C. Mazauric) Agrif implementation
	21	!! " " ! 06-07 (S. Masson) restart using iom
[3]	22	!!----------------------------------------------------------------------
	23	!! stp : OPA system time-stepping
	24	!!----------------------------------------------------------------------
	25	USE oce ! ocean dynamics and tracers variables
	26	USE dom_oce ! ocean space and time domain variables
	27	USE zdf_oce ! ocean vertical physics variables
[467]	28	USE ldftra_oce ! ocean tracer - trends
	29	USE ldfdyn_oce ! ocean dynamics - trends
[216]	30	USE cpl_oce ! coupled ocean-atmosphere variables
[3]	31	USE in_out_manager ! I/O manager
[719]	32	USE iom
[3]	33	USE lbclnk
	34
	35	USE daymod ! calendar (day routine)
	36
	37	USE dtatem ! ocean temperature data (dta_tem routine)
	38	USE dtasal ! ocean salinity data (dta_sal routine)
[719]	39	USE dtasst ! ocean sea surface temperature (dta_sst routine)
	40	USE dtasss ! ocean sea surface salinity (dta_sss routine)
	41	USE taumod ! surface stress (tau routine)
	42	USE flxmod ! thermohaline fluxes (flx routine)
	43	USE ocesbc ! thermohaline fluxes (oce_sbc routine)
	44	USE flxrnf ! runoffs (flx_rnf routine)
	45	USE flxfwb ! freshwater budget correction (flx_fwb routine)
	46	USE closea ! closed sea freshwater budget (flx_clo routine)
[3]	47	USE ocfzpt ! surface ocean freezing point (oc_fz_pt routine)
	48
[187]	49	USE trcstp ! passive tracer time-stepping (trc_stp routine)
[3]	50
[467]	51	USE traqsr ! solar radiation penetration (tra_qsr routine)
	52	USE trasbc ! surface boundary condition (tra_sbc routine)
[3]	53	USE trabbc ! bottom boundary condition (tra_bbc routine)
	54	USE trabbl ! bottom boundary layer (tra_bbl routine)
	55	USE tradmp ! internal damping (tra_dmp routine)
[467]	56	USE traadv ! advection scheme control (tra_adv_ctl routine)
	57	USE traldf ! lateral mixing (tra_ldf routine)
	58	USE cla ! cross land advection (tra_cla routine)
	59	! zdfkpp ! KPP non-local tracer fluxes (tra_kpp routine)
	60	USE trazdf ! vertical mixing (tra_zdf routine)
	61	USE tranxt ! time-stepping (tra_nxt routine)
[3]	62	USE tranpc ! non-penetrative convection (tra_npc routine)
	63
	64	USE eosbn2 ! equation of state (eos_bn2 routine)
	65
[643]	66	USE dynadv ! advection (dyn_adv routine)
	67	USE dynvor ! vorticity term (dyn_vor routine)
[467]	68	USE dynhpg ! hydrostatic pressure grad. (dyn_hpg routine)
	69	USE dynldf ! lateral momentum diffusion (dyn_ldf routine)
	70	USE dynzdf ! vertical diffusion (dyn_zdf routine)
	71	USE dynspg_oce ! surface pressure gradient (dyn_spg routine)
	72	USE dynspg ! surface pressure gradient (dyn_spg routine)
	73	USE dynnxt ! time-stepping (dyn_nxt routine)
	74
[3]	75	USE obc_par ! open boundary condition variables
	76	USE obcdta ! open boundary condition data (obc_dta routine)
	77	USE obcrst ! open boundary cond. restart (obc_rst routine)
	78	USE obcrad ! open boundary cond. radiation (obc_rad routine)
	79	USE obcspg ! open boundary cond spg (obc_spg routine)
	80
	81	USE divcur ! hor. divergence and curl (div & cur routines)
	82	USE cla_div ! cross land: hor. divergence (div_cla routine)
	83	USE wzvmod ! vertical velocity (wzv routine)
	84
	85	USE ldfslp ! iso-neutral slopes (ldf_slp routine)
	86	USE ldfeiv ! eddy induced velocity coef. (ldf_eiv routine)
	87
	88	USE zdfbfr ! bottom friction (zdf_bfr routine)
	89	USE zdftke ! TKE vertical mixing (zdf_tke routine)
[255]	90	USE zdfkpp ! KPP vertical mixing (zdf_kpp routine)
[3]	91	USE zdfddm ! double diffusion mixing (zdf_ddm routine)
	92	USE zdfevd ! enhanced vertical diffusion (zdf_evd routine)
	93	USE zdfric ! Richardson vertical mixing (zdf_ric routine)
	94	USE zdfmxl ! Mixed-layer depth (zdf_mxl routine)
	95
	96	USE zpshde ! partial step: hor. derivative (zps_hde routine)
	97	USE ice_oce ! sea-ice variable
[719]	98	USE icestp ! sea-ice time-stepping (ice_stp routine)
[3]	99
	100	USE diawri ! Standard run outputs (dia_wri routine)
[216]	101	USE trdicp ! Ocean momentum/tracers trends (trd_wri routine)
[3]	102	USE trdmld ! mixed-layer trends (trd_mld routine)
[503]	103	USE trdmld_rst ! restart for mixed-layer trends
	104	USE trdmod_oce ! ocean momentum/tracers trends
[108]	105	USE trdvor ! vorticity budget (trd_vor routine)
[216]	106	USE diagap ! hor. mean model-data gap (dia_gap routine)
[3]	107	USE diahdy ! dynamic height (dia_hdy routine)
[132]	108	USE diaptr ! poleward transports (dia_ptr routine)
[3]	109	USE diahth ! thermocline depth (dia_hth routine)
	110	USE diafwb ! freshwater budget (dia_fwb routine)
	111	USE diaspr ! suface pressure (rigid-lid) (dia_spr routine)
	112	USE flo_oce ! floats variables
	113	USE floats ! floats computation (flo_stp routine)
	114
	115	USE stpctl ! time stepping control (stp_ctl routine)
[75]	116	USE restart ! ocean restart (rst_wri routine)
[719]	117	USE cpl ! exchanges in coupled mode (cpl_stp routine)
[258]	118	USE prtctl ! Print control (prt_ctl routine)
[593]	119	USE domvvl ! variable volume (dom_vvl routine)
[3]	120
[392]	121	#if defined key_agrif
[389]	122	USE agrif_opa_sponge ! Momemtum and tracers sponges
	123	#endif
	124
[3]	125	IMPLICIT NONE
	126	PRIVATE
	127
	128	PUBLIC stp ! called by opa.F90
	129
	130	!! * Substitutions
	131	# include "domzgr_substitute.h90"
	132	# include "zdfddm_substitute.h90"
	133	!!----------------------------------------------------------------------
[247]	134	!! OPA 9.0 , LOCEAN-IPSL (2005)
[782]	135	!! $Header: /home/opalod/NEMOCVSROOT/NEMO/OPA_SRC/step.F90,v 1.35 2007/06/01 16:55:39 opalod Exp $
[508]	136	!! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt)
[3]	137	!!----------------------------------------------------------------------
	138
	139	CONTAINS
	140
[508]	141	#if defined key_agrif
	142	SUBROUTINE stp( )
	143	#else
[467]	144	SUBROUTINE stp( kstp )
	145	#endif
	146	!!----------------------------------------------------------------------
[3]	147	!! * ROUTINE stp *
	148	!!
	149	!! ** Purpose : - Time stepping of OPA (momentum and active tracer eqs.)
	150	!! - Time stepping of LIM (dynamic and thermodynamic eqs.)
	151	!! - Tme stepping of TRC (passive tracer eqs.)
	152	!!
	153	!! ** Method : -1- Update forcings and data
	154	!! -2- Update ocean physics
	155	!! -3- Compute the t and s trends
	156	!! -4- Update t and s
	157	!! -5- Compute the momentum trends
	158	!! -6- Update the horizontal velocity
	159	!! -7- Compute the diagnostics variables (rd,N2, div,cur,w)
	160	!! -8- Outputs and diagnostics
	161	!!----------------------------------------------------------------------
[719]	162	!! * Arguments
[508]	163	#if defined key_agrif
[719]	164	INTEGER :: kstp ! ocean time-step index
[508]	165	#else
[719]	166	INTEGER, INTENT( in ) :: kstp ! ocean time-step index
[389]	167	#endif
[719]	168
	169	!! * local declarations
[3]	170	INTEGER :: indic ! error indicator if < 0
	171	!! ---------------------------------------------------------------------
	172
[392]	173	#if defined key_agrif
[389]	174	kstp = nit000 + Agrif_Nb_Step()
[445]	175	! IF ( Agrif_Root() .and. lwp) Write(,) '---'
[508]	176	! IF (lwp) Write(,) 'Grid Number',Agrif_Fixed(),' time step ',kstp
[389]	177	#endif
[3]	178	indic = 1 ! reset to no error condition
[508]	179
[3]	180	adatrj = adatrj + rdt/86400._wp
	181
	182	CALL day( kstp ) ! Calendar
	183
[508]	184	CALL rst_opn( kstp ) ! Open the restart file
	185
[3]	186	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[719]	187	! Update data, open boundaries and Forcings
[3]	188	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	189
	190	IF( lk_dtatem ) CALL dta_tem( kstp ) ! update 3D temperature data
	191
[719]	192	IF( lk_dtasal ) CALL dta_sal( kstp ) ! Salinity data
[3]	193
[719]	194	IF( lk_dtasst ) CALL dta_sst( kstp ) ! Sea Surface Temperature data
	195
	196	IF( lk_dtasss ) CALL dta_sss( kstp ) ! Sea Surface Salinity data
	197
[35]	198	IF( lk_obc ) CALL obc_dta( kstp ) ! update dynamic and tracer data at open boundaries
[719]	199
[3]	200	IF( lk_obc ) CALL obc_rad( kstp ) ! compute phase velocities at open boundaries
	201
[719]	202	IF( .NOT. lk_core ) CALL tau( kstp ) ! wind stress
	203
	204	CALL flx_rnf( kstp ) ! runoff data
	205
	206	CALL flx( kstp ) ! heat and freshwater fluxes
	207
	208	IF( lk_ice_lim ) CALL ice_stp( kstp ) ! sea-ice model (Update stress & fluxes)
	209
	210	CALL oce_sbc( kstp ) ! ocean surface boudaries
	211
	212	IF( ln_fwb ) CALL flx_fwb( kstp ) ! freshwater budget
	213
	214	IF( nclosea == 1 ) CALL flx_clo( kstp ) ! closed sea in the domain (update freshwater fluxes)
	215
	216	IF( kstp == nit000 ) THEN
	217	IF( ninist == 1 ) THEN ! Output the initial state and forcings
	218	CALL dia_wri_state( 'output.init' )
	219	ENDIF
[3]	220	ENDIF
	221
[719]	222	IF(ln_ctl) THEN ! print mean trends (used for debugging)
	223	CALL prt_ctl(tab2d_1=emp , clinfo1=' emp - : ', mask1=tmask, ovlap=1)
	224	CALL prt_ctl(tab2d_1=emps , clinfo1=' emps - : ', mask1=tmask, ovlap=1)
	225	CALL prt_ctl(tab2d_1=qt , clinfo1=' qt - : ', mask1=tmask, ovlap=1)
	226	CALL prt_ctl(tab2d_1=qsr , clinfo1=' qsr - : ', mask1=tmask, ovlap=1)
	227	CALL prt_ctl(tab2d_1=runoff , clinfo1=' runoff : ', mask1=tmask, ovlap=1)
	228	CALL prt_ctl(tab3d_1=tmask , clinfo1=' tmask : ', mask1=tmask, ovlap=1, kdim=jpk)
	229	CALL prt_ctl(tab3d_1=tn , clinfo1=' sst - : ', mask1=tmask, ovlap=1, kdim=1)
	230	CALL prt_ctl(tab3d_1=sn , clinfo1=' sss - : ', mask1=tmask, ovlap=1, kdim=1)
	231	CALL prt_ctl(tab2d_1=taux , clinfo1=' tau - x : ', mask1=umask, &
	232	& tab2d_2=tauy , clinfo2=' - y : ', mask2=vmask,ovlap=1)
	233	ENDIF
[3]	234
[719]	235
[3]	236	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	237	! Ocean physics update
	238	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	239	!-----------------------------------------------------------------------
	240	! VERTICAL PHYSICS
	241	!-----------------------------------------------------------------------
	242	! N.B. ua, va, ta, sa arrays are used as workspace in this section
	243	!-----------------------------------------------------------------------
	244
[719]	245	CALL bn2( tb, sb, rn2 ) ! before Brunt-Vaisala frequency
[3]	246
	247	! ! Vertical eddy viscosity and diffusivity coefficients
	248	IF( lk_zdfric ) CALL zdf_ric( kstp ) ! Richardson number dependent Kz
[789]	249
[3]	250	IF( lk_zdftke ) CALL zdf_tke( kstp ) ! TKE closure scheme for Kz
[789]	251
[255]	252	IF( lk_zdfkpp ) CALL zdf_kpp( kstp ) ! KPP closure scheme for Kz
[467]	253
[677]	254	IF( lk_zdfcst ) THEN ! Constant Kz (reset avt, avm[uv] to the background value)
	255	avt (:,:,:) = avt0 * tmask(:,:,:)
	256	avmu(:,:,:) = avm0 * umask(:,:,:)
	257	avmv(:,:,:) = avm0 * vmask(:,:,:)
	258	ENDIF
[3]	259
[719]	260	IF( cp_cfg == "orca" ) THEN ! ORCA: Reduce vertical mixing in some specific areas
	261	SELECT CASE ( jp_cfg )
	262	CASE ( 05 ) ! ORCA R2 configuration
	263	avt (:,:,2) = avt (:,:,2) + 1.e-3 * upsrnfh(:,:) ! increase diffusivity of rivers mouths
	264	CASE ( 025 ) ! ORCA R025 configuration
	265	avt (:,:,2) = avt (:,:,2) + 2.e-3 * upsrnfh(:,:) ! increase diffusivity of rivers mouths
	266	END SELECT
[3]	267	ENDIF
	268
	269	IF( ln_zdfevd ) CALL zdf_evd( kstp ) ! enhanced vertical eddy diffusivity
	270
[719]	271	IF( lk_zdfddm .AND. .NOT. lk_zdfkpp) &
[255]	272	& CALL zdf_ddm( kstp ) ! double diffusive mixing
[3]	273
[75]	274	CALL zdf_bfr( kstp ) ! bottom friction
[3]	275
	276	CALL zdf_mxl( kstp ) ! mixed layer depth
	277
	278
	279	!-----------------------------------------------------------------------
	280	! LATERAL PHYSICS
	281	!-----------------------------------------------------------------------
	282	! N.B. ua, va, ta, sa arrays are used as workspace in this section
	283	!-----------------------------------------------------------------------
[719]	284
[3]	285	IF( lk_ldfslp ) CALL ldf_slp( kstp, rhd, rn2 ) ! before slope of the lateral mixing
[719]	286
[3]	287	#if defined key_traldf_c2d
	288	IF( lk_traldf_eiv ) CALL ldf_eiv( kstp ) ! eddy induced velocity coefficient
	289	#endif
	290
[719]	291
[3]	292	#if defined key_passivetrc
	293	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	294	! Passive Tracer Model
	295	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	296	! N.B. ua, va, ta, sa arrays are used as workspace in this section
	297	!-----------------------------------------------------------------------
[719]	298
[345]	299	CALL trc_stp( kstp, indic ) ! time-stepping
[719]	300
[3]	301	#endif
	302
[719]	303
[3]	304	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	305	! Active tracers
	306	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	307	! N.B. ua, va arrays are used as workspace in this section
	308	!-----------------------------------------------------------------------
[719]	309
[467]	310	ta(:,:,:) = 0.e0 ! set tracer trends to zero
	311	sa(:,:,:) = 0.e0
[3]	312
[467]	313	CALL tra_sbc ( kstp ) ! surface boundary condition
[719]	314
[467]	315	IF( ln_traqsr ) CALL tra_qsr ( kstp ) ! penetrative solar radiation qsr
[719]	316
[467]	317	IF( lk_trabbc ) CALL tra_bbc ( kstp ) ! bottom heat flux
[719]	318
[467]	319	IF( lk_trabbl_dif ) CALL tra_bbl_dif( kstp ) ! diffusive bottom boundary layer scheme
	320	IF( lk_trabbl_adv ) CALL tra_bbl_adv( kstp ) ! advective (and/or diffusive) bottom boundary layer scheme
[719]	321
[467]	322	IF( lk_tradmp ) CALL tra_dmp ( kstp ) ! internal damping trends
[719]	323
[467]	324	CALL tra_adv ( kstp ) ! horizontal & vertical advection
[719]	325
[467]	326	IF( n_cla == 1 ) CALL tra_cla ( kstp ) ! Cross Land Advection (Update Hor. advection)
[719]	327
[467]	328	IF( lk_zdfkpp ) CALL tra_kpp ( kstp ) ! KPP non-local tracer fluxes
[719]	329
[467]	330	CALL tra_ldf ( kstp ) ! lateral mixing
[392]	331	#if defined key_agrif
[782]	332	IF(.NOT. Agrif_Root()) CALL Agrif_Sponge_tra ! tracers sponge
[389]	333	#endif
[467]	334	CALL tra_zdf ( kstp ) ! vertical mixing
[719]	335
[467]	336	CALL tra_nxt( kstp ) ! tracer fields at next time step
[719]	337
[467]	338	IF( ln_zdfnpc ) CALL tra_npc( kstp ) ! update the new (t,s) fields by non
	339	! ! penetrative convective adjustment
[3]	340
[467]	341	IF( ln_dynhpg_imp ) THEN ! semi-implicit hpg
	342	CALL eos( ta, sa, rhd, rhop ) ! Time-filtered in situ density used in dynhpg module
	343	IF( ln_zps ) CALL zps_hde( kstp, ta, sa, rhd, & ! Partial steps: time filtered hor. gradient
	344	& gtu, gsu, gru, & ! of t, s, rd at the bottom ocean level
	345	& gtv, gsv, grv )
	346	ELSE ! centered hpg (default case)
	347	CALL eos( tb, sb, rhd, rhop ) ! now (swap=before) in situ density for dynhpg module
	348	IF( ln_zps ) CALL zps_hde( kstp, tb, sb, rhd, & ! Partial steps: now horizontal gradient
	349	& gtu, gsu, gru, & ! of t, s, rd at the bottom ocean level
	350	& gtv, gsv, grv )
[3]	351	ENDIF
	352
	353	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	354	! Dynamics
	355	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	356	! N.B. ta, sa arrays are used as workspace in this section
	357	!-----------------------------------------------------------------------
[719]	358
	359
[75]	360	ua(:,:,:) = 0.e0 ! set dynamics trends to zero
	361	va(:,:,:) = 0.e0
[3]	362
[643]	363	CALL dyn_adv( kstp ) ! advection (vector or flux form)
[719]	364
[467]	365	CALL dyn_vor( kstp ) ! vorticity term including Coriolis
[719]	366
[467]	367	CALL dyn_ldf( kstp ) ! lateral mixing
[392]	368	#if defined key_agrif
[782]	369	IF(.NOT. Agrif_Root()) CALL Agrif_Sponge_dyn ! momemtum sponge
[389]	370	#endif
[467]	371	CALL dyn_hpg( kstp ) ! horizontal gradient of Hydrostatic pressure
[719]	372
[467]	373	CALL dyn_zdf( kstp ) ! vertical diffusion
[719]	374
[467]	375	IF( lk_dynspg_rl ) THEN
[75]	376	IF( lk_obc ) CALL obc_spg( kstp ) ! surface pressure gradient at open boundaries
[3]	377	ENDIF
[719]	378	indic=0
	379	!i bug lbc sur emp
	380	CALL lbc_lnk( emp, 'T', 1. )
	381	!i
[359]	382	CALL dyn_spg( kstp, indic ) ! surface pressure gradient
[719]	383
[467]	384	CALL dyn_nxt( kstp ) ! lateral velocity at next time step
[719]	385
[593]	386	IF( lk_vvl ) CALL dom_vvl ! vertical mesh at next time step
[3]	387
[593]	388
[3]	389	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	390	! Computation of diagnostic variables
	391	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	392	! N.B. ua, va, ta, sa arrays are used as workspace in this section
	393	!-----------------------------------------------------------------------
[719]	394
[3]	395	CALL oc_fz_pt ! ocean surface freezing temperature
[719]	396
[3]	397	CALL div_cur( kstp ) ! Horizontal divergence & Relative vorticity
[719]	398
[3]	399	IF( n_cla == 1 ) CALL div_cla( kstp ) ! Cross Land Advection (Update Hor. divergence)
[719]	400
[3]	401	CALL wzv( kstp ) ! Vertical velocity
	402
[719]	403
	404
[3]	405	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[719]	406	! Control, and restarts
[3]	407	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[719]	408	! N.B. ua, va, ta, sa arrays are used as workspace in this section
	409	!-----------------------------------------------------------------------
	410	! ! Time loop: control and print
[508]	411	CALL stp_ctl( kstp, indic )
	412	IF( indic < 0 ) CALL ctl_stop( 'step: indic < 0' )
[719]	413
[508]	414	IF( kstp == nit000 ) CALL iom_close( numror ) ! close input ocean restart file
	415	IF( lrst_oce ) CALL rst_write ( kstp ) ! write output ocean restart file
	416	IF( lk_obc ) CALL obc_rst_wri( kstp ) ! write open boundary restart file
[3]	417
[508]	418	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	419	! diagnostics and outputs
	420	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	421	! N.B. ua, va, ta, sa arrays are used as workspace in this section
	422	!-----------------------------------------------------------------------
	423
[719]	424	IF ( nstop == 0 ) THEN ! Diagnostics
[75]	425	IF( lk_floats ) CALL flo_stp( kstp ) ! drifting Floats
[216]	426	IF( lk_trddyn ) CALL trd_dwr( kstp ) ! trends: dynamics
	427	IF( lk_trdtra ) CALL trd_twr( kstp ) ! trends: active tracers
[75]	428	IF( lk_trdmld ) CALL trd_mld( kstp ) ! trends: Mixed-layer
[108]	429	IF( lk_trdvor ) CALL trd_vor( kstp ) ! trends: vorticity budget
[75]	430	IF( lk_diaspr ) CALL dia_spr( kstp ) ! Surface pressure diagnostics
	431	IF( lk_diahth ) CALL dia_hth( kstp ) ! Thermocline depth (20 degres isotherm depth)
	432	IF( lk_diagap ) CALL dia_gap( kstp ) ! basin averaged diagnostics
	433	IF( lk_diahdy ) CALL dia_hdy( kstp ) ! dynamical heigh diagnostics
	434	IF( lk_diafwb ) CALL dia_fwb( kstp ) ! Fresh water budget diagnostics
[414]	435	IF( ln_diaptr ) CALL dia_ptr( kstp ) ! Poleward TRansports diagnostics
[719]	436
	437	! ! Outputs
	438	CALL dia_wri ( kstp, indic ) ! ocean model: outputs
[75]	439	ENDIF
[3]	440
[75]	441	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	442	! Coupled mode
	443	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3]	444
[75]	445	IF( lk_cpl ) CALL cpl_stp( kstp ) ! coupled mode : field exchanges
[508]	446	!
[3]	447	END SUBROUTINE stp
	448
	449	!!======================================================================
	450	END MODULE step

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