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step.F90 in branches/2011/DEV_r2739_STFC_dCSE/NEMOGCM/NEMO/OPA_SRC – NEMO

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source: branches/2011/DEV_r2739_STFC_dCSE/NEMOGCM/NEMO/OPA_SRC/step.F90 @ 3837

Last change on this file since 3837 was 3837, checked in by trackstand2, 11 years ago
Merge of finiss
Property svn:keywords set to `Id`
File size: 21.1 KB

Rev	Line
[3]	1	MODULE step
	2	!!======================================================================
	3	!! * MODULE step *
	4	!! Time-stepping : manager of the ocean, tracer and ice time stepping
	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
[3187]	25	!! ! 2011-05 (S. Pickles) dCSE NEMO optimisations - z index first
[3]	26	!!----------------------------------------------------------------------
[888]	27
	28	!!----------------------------------------------------------------------
[2528]	29	!! stp : OPA system time-stepping
[3]	30	!!----------------------------------------------------------------------
[2528]	31	USE step_oce ! time stepping definition modules
[1594]	32	#if defined key_top
[2528]	33	USE trcstp ! passive tracer time-stepping (trc_stp routine)
[1594]	34	#endif
[392]	35	#if defined key_agrif
[389]	36	USE agrif_opa_sponge ! Momemtum and tracers sponges
	37	#endif
[2528]	38	USE asminc ! assimilation increments (tra_asm_inc, dyn_asm_inc routines)
[3432]	39	USE timing, ONLY: timing_start, timing_stop, timing_reset, timing_disable
[3837]	40	USE arpdebugging, ONLY: dump_array
[3]	41	IMPLICIT NONE
	42	PRIVATE
	43
[2528]	44	PUBLIC stp ! called by opa.F90
[3]	45
[3187]	46	!! * Control permutation of array indices
	47	!! DCSE_NEMO: warning! dom_oce and zdf_oce public variables are made available
	48	!! through the use of step_oce
	49	# include "dom_oce_ftrans.h90"
	50	# include "zdf_oce_ftrans.h90"
	51
[3]	52	!! * Substitutions
	53	# include "domzgr_substitute.h90"
	54	# include "zdfddm_substitute.h90"
	55	!!----------------------------------------------------------------------
[2528]	56	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
[888]	57	!! $Id$
[2528]	58	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[3]	59	!!----------------------------------------------------------------------
	60	CONTAINS
	61
[508]	62	#if defined key_agrif
	63	SUBROUTINE stp( )
[1438]	64	INTEGER :: kstp ! ocean time-step index
[508]	65	#else
[467]	66	SUBROUTINE stp( kstp )
[1438]	67	INTEGER, INTENT(in) :: kstp ! ocean time-step index
[467]	68	#endif
	69	!!----------------------------------------------------------------------
[3]	70	!! * ROUTINE stp *
	71	!!
	72	!! ** Purpose : - Time stepping of OPA (momentum and active tracer eqs.)
	73	!! - Time stepping of LIM (dynamic and thermodynamic eqs.)
	74	!! - Tme stepping of TRC (passive tracer eqs.)
	75	!!
	76	!! ** Method : -1- Update forcings and data
	77	!! -2- Update ocean physics
	78	!! -3- Compute the t and s trends
	79	!! -4- Update t and s
	80	!! -5- Compute the momentum trends
	81	!! -6- Update the horizontal velocity
	82	!! -7- Compute the diagnostics variables (rd,N2, div,cur,w)
	83	!! -8- Outputs and diagnostics
	84	!!----------------------------------------------------------------------
[888]	85	INTEGER :: jk ! dummy loop indice
[3]	86	INTEGER :: indic ! error indicator if < 0
[3187]	87	#if defined key_z_first
	88	INTEGER :: ji, jj ! dummy loop indices
	89	#endif
[3]	90	!! ---------------------------------------------------------------------
[3432]	91	CALL timing_start('Step')
[3]	92
[392]	93	#if defined key_agrif
[389]	94	kstp = nit000 + Agrif_Nb_Step()
[2715]	95	! IF ( Agrif_Root() .and. lwp) Write(,) '---'
	96	! IF (lwp) Write(,) 'Grid Number',Agrif_Fixed(),' time step ',kstp
[1793]	97	# if defined key_iomput
[2528]	98	IF( Agrif_Nbstepint() == 0 ) CALL iom_swap
[1793]	99	# endif
[389]	100	#endif
[2528]	101	indic = 0 ! reset to no error condition
[1725]	102	IF( kstp /= nit000 ) CALL day( kstp ) ! Calendar (day was already called at nit000 in day_init)
[2528]	103	CALL iom_setkt( kstp ) ! say to iom that we are at time step kstp
[3]	104
	105	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[888]	106	! Update data, open boundaries, surface boundary condition (including sea-ice)
[3]	107	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3432]	108	CALL timing_start('Boundaries')
[3]	109	IF( lk_dtatem ) CALL dta_tem( kstp ) ! update 3D temperature data
[888]	110	IF( lk_dtasal ) CALL dta_sal( kstp ) ! update 3D salinity data
	111	CALL sbc ( kstp ) ! Sea Boundary Condition (including sea-ice)
[35]	112	IF( lk_obc ) CALL obc_dta( kstp ) ! update dynamic and tracer data at open boundaries
[3]	113	IF( lk_obc ) CALL obc_rad( kstp ) ! compute phase velocities at open boundaries
[2528]	114	IF( lk_bdy ) CALL bdy_dta_frs( kstp ) ! update dynamic and tracer data for FRS conditions (BDY)
[3432]	115	! ARP - no 'section' arg here so the time taken
	116	! in this region (which can involve IO) is
	117	! subtracted from the time
	118	! taken to do the whole step.
	119	CALL timing_stop('Boundaries')
[911]	120
[1438]	121	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[1492]	122	! Ocean dynamics : ssh, wn, hdiv, rot !
[1438]	123	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3432]	124	CALL timing_start('Ocean Dyn.')
[1492]	125	CALL ssh_wzv( kstp ) ! after ssh & vertical velocity
[3432]	126	CALL timing_stop('Ocean Dyn.','section')
[3]	127
	128	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[1492]	129	! Ocean physics update (ua, va, ta, sa used as workspace)
[3]	130	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3432]	131	CALL timing_start('Ocean Phys.')
[2528]	132	CALL bn2( tsb, rn2b ) ! before Brunt-Vaisala frequency
	133	CALL bn2( tsn, rn2 ) ! now Brunt-Vaisala frequency
[3432]	134	CALL timing_stop('Ocean Phys.','section')
[1492]	135	!
[3432]	136	! VERTICAL PHYSICS
	137	CALL timing_start('Vert. Phys.')
[1662]	138	CALL zdf_bfr( kstp ) ! bottom friction
[2528]	139
[1492]	140	! ! Vertical eddy viscosity and diffusivity coefficients
[2528]	141	IF( lk_zdfric ) CALL zdf_ric( kstp ) ! Richardson number dependent Kz
	142	IF( lk_zdftke ) CALL zdf_tke( kstp ) ! TKE closure scheme for Kz
	143	IF( lk_zdfgls ) CALL zdf_gls( kstp ) ! GLS closure scheme for Kz
	144	IF( lk_zdfkpp ) CALL zdf_kpp( kstp ) ! KPP closure scheme for Kz
	145	IF( lk_zdfcst ) THEN ! Constant Kz (reset avt, avm[uv] to the background value)
[1537]	146	avt (:,:,:) = rn_avt0 * tmask(:,:,:)
	147	avmu(:,:,:) = rn_avm0 * umask(:,:,:)
	148	avmv(:,:,:) = rn_avm0 * vmask(:,:,:)
[677]	149	ENDIF
[1492]	150	IF( ln_rnf_mouth ) THEN ! increase diffusivity at rivers mouths
[3187]	151	#if defined key_z_first
	152	DO ji = 1, jpi
	153	DO jj = 1, jpj
	154	DO jk = 2, nkrnf
	155	avt(ji,jj,jk) = avt(ji,jj,jk) + 2.e0 * rn_avt_rnf * rnfmsk(ji,jj) * tmask(ji,jj,jk)
	156	END DO
	157	END DO
	158	END DO
	159	#else
	160	DO jk = 2, nkrnf
	161	avt(:,:,jk) = avt(:,:,jk) + 2.e0 * rn_avt_rnf * rnfmsk(:,:) * tmask(:,:,jk)
	162	END DO
	163	#endif
[3]	164	ENDIF
[1492]	165	IF( ln_zdfevd ) CALL zdf_evd( kstp ) ! enhanced vertical eddy diffusivity
[3]	166
[1492]	167	IF( lk_zdftmx ) CALL zdf_tmx( kstp ) ! tidal vertical mixing
[3]	168
[888]	169	IF( lk_zdfddm .AND. .NOT. lk_zdfkpp ) &
[1492]	170	& CALL zdf_ddm( kstp ) ! double diffusive mixing
[2528]	171
[1492]	172	CALL zdf_mxl( kstp ) ! mixed layer depth
[3]	173
[2528]	174	! write TKE or GLS information in the restart file
[1531]	175	IF( lrst_oce .AND. lk_zdftke ) CALL tke_rst( kstp, 'WRITE' )
[2528]	176	IF( lrst_oce .AND. lk_zdfgls ) CALL gls_rst( kstp, 'WRITE' )
[3432]	177
	178	CALL timing_stop('Vert. Phys.','section')
[1492]	179	!
	180	! LATERAL PHYSICS
	181	!
[3432]	182	CALL timing_start('Lateral Phys.')
	183	!
[1492]	184	IF( lk_ldfslp ) THEN ! slope of lateral mixing
[2528]	185	CALL eos( tsb, rhd ) ! before in situ density
	186	IF( ln_zps ) CALL zps_hde( kstp, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient
	187	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
	188	IF( ln_traldf_grif ) THEN ! before slope for Griffies operator
	189	CALL ldf_slp_grif( kstp )
	190	ELSE
	191	CALL ldf_slp( kstp, rhd, rn2b ) ! before slope for Madec operator
	192	ENDIF
[1481]	193	ENDIF
[3]	194	#if defined key_traldf_c2d
[1492]	195	IF( lk_traldf_eiv ) CALL ldf_eiv( kstp ) ! eddy induced velocity coefficient
[2528]	196	#endif
[3432]	197	CALL timing_stop('Lateral Phys.','section')
[3]	198
[1482]	199	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[1492]	200	! diagnostics and outputs (ua, va, ta, sa used as workspace)
[1482]	201	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3432]	202	CALL timing_start('Diagnostics')
[1492]	203	IF( lk_floats ) CALL flo_stp( kstp ) ! drifting Floats
	204	IF( lk_diahth ) CALL dia_hth( kstp ) ! Thermocline depth (20 degres isotherm depth)
	205	IF( lk_diafwb ) CALL dia_fwb( kstp ) ! Fresh water budget diagnostics
	206	IF( ln_diaptr ) CALL dia_ptr( kstp ) ! Poleward TRansports diagnostics
[1756]	207	IF( lk_diaar5 ) CALL dia_ar5( kstp ) ! ar5 diag
[1635]	208	CALL dia_wri( kstp ) ! ocean model: outputs
[3432]	209	CALL timing_stop('Diagnostics','section')
[1482]	210
[923]	211	#if defined key_top
[3]	212	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	213	! Passive Tracer Model
	214	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[1492]	215	CALL trc_stp( kstp ) ! time-stepping
[3]	216	#endif
	217
	218	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[1492]	219	! Active tracers (ua, va used as workspace)
[3]	220	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3432]	221	CALL timing_start('Active tracers')
	222
[2528]	223	tsa(:,:,:,:) = 0.e0 ! set tracer trends to zero
[3]	224
[2528]	225	IF( ln_asmiau .AND. &
	226	& ln_trainc ) CALL tra_asm_inc( kstp ) ! apply tracer assimilation increment
[467]	227	CALL tra_sbc ( kstp ) ! surface boundary condition
	228	IF( ln_traqsr ) CALL tra_qsr ( kstp ) ! penetrative solar radiation qsr
[2528]	229	IF( ln_trabbc ) CALL tra_bbc ( kstp ) ! bottom heat flux
	230	IF( lk_trabbl ) CALL tra_bbl ( kstp ) ! advective (and/or diffusive) bottom boundary layer scheme
[467]	231	IF( lk_tradmp ) CALL tra_dmp ( kstp ) ! internal damping trends
	232	CALL tra_adv ( kstp ) ! horizontal & vertical advection
[2528]	233	IF( lk_zdfkpp ) CALL tra_kpp ( kstp ) ! KPP non-local tracer fluxes
[467]	234	CALL tra_ldf ( kstp ) ! lateral mixing
[392]	235	#if defined key_agrif
[2528]	236	CALL tra_unswap
[782]	237	IF(.NOT. Agrif_Root()) CALL Agrif_Sponge_tra ! tracers sponge
[2528]	238	CALL tra_swap
[389]	239	#endif
[1111]	240	CALL tra_zdf ( kstp ) ! vertical mixing and after tracer fields
[1239]	241
[1492]	242	IF( ln_dynhpg_imp ) THEN ! semi-implicit hpg (time stepping then eos)
[2528]	243	IF( ln_zdfnpc ) CALL tra_npc( kstp ) ! update after fields by non-penetrative convection
	244	CALL tra_nxt( kstp ) ! tracer fields at next time step
	245	CALL eos ( tsa, rhd, rhop ) ! Time-filtered in situ density for hpg computation
	246	IF( ln_zps ) CALL zps_hde( kstp, jpts, tsa, gtsu, gtsv, & ! zps: time filtered hor. derivative
	247	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
[1492]	248
	249	ELSE ! centered hpg (eos then time stepping)
[2528]	250	CALL eos ( tsn, rhd, rhop ) ! now in situ density for hpg computation
	251	IF( ln_zps ) CALL zps_hde( kstp, jpts, tsn, gtsu, gtsv, & ! zps: now hor. derivative
	252	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
	253	IF( ln_zdfnpc ) CALL tra_npc( kstp ) ! update after fields by non-penetrative convection
	254	CALL tra_nxt( kstp ) ! tracer fields at next time step
[1239]	255	ENDIF
[2528]	256	CALL tra_unswap ! udate T & S 3D arrays (to be suppressed)
[3432]	257	CALL timing_stop('Active tracers','section')
[1481]	258
[3]	259	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[1492]	260	! Dynamics (ta, sa used as workspace)
[3]	261	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3432]	262	CALL timing_start('Dynamics')
	263
[1492]	264	ua(:,:,:) = 0.e0 ! set dynamics trends to zero
[75]	265	va(:,:,:) = 0.e0
[3]	266
[2528]	267	IF( ln_asmiau .AND. &
	268	& ln_dyninc ) CALL dyn_asm_inc( kstp ) ! apply dynamics assimilation increment
[3837]	269	!CALL dump_array(kstp,'un_pre_adv',un(:,:,27), &
	270	! withHalos=.TRUE.)
	271
[3432]	272	!CALL timing_start('dyn_adv')
[1492]	273	CALL dyn_adv( kstp ) ! advection (vector or flux form)
[3432]	274	!CALL timing_stop('dyn_adv','section')
	275
[3837]	276	!CALL dump_array(kstp,'ua_pre_vor',ua(:,:,27), &
	277	! withHalos=.TRUE.)
	278
[3432]	279	!CALL timing_start('dyn_vor')
[1492]	280	CALL dyn_vor( kstp ) ! vorticity term including Coriolis
[3432]	281	!CALL timing_stop('dyn_vor','section')
	282
[3837]	283	!CALL dump_array(kstp,'ua_pre_ldf',ua(:,:,27), &
	284	! withHalos=.TRUE.)
	285
[3432]	286	!CALL timing_start('dyn_ldf')
[1492]	287	CALL dyn_ldf( kstp ) ! lateral mixing
[3432]	288	!CALL timing_stop('dyn_ldf','section')
	289
[392]	290	#if defined key_agrif
[1492]	291	IF(.NOT. Agrif_Root()) CALL Agrif_Sponge_dyn ! momemtum sponge
[389]	292	#endif
[3837]	293	!CALL dump_array(kstp,'ua_pre_hpg',ua(:,:,27), &
	294	! withHalos=.TRUE.)
	295
[3432]	296	!CALL timing_start('dyn_hpg')
[1492]	297	CALL dyn_hpg( kstp ) ! horizontal gradient of Hydrostatic pressure
[3432]	298	!CALL timing_stop('dyn_hpg','section')
	299
[3837]	300	!CALL dump_array(kstp,'ua_pre_bfr',ua(:,:,27), &
	301	! withHalos=.TRUE.)
	302
[3432]	303	!CALL timing_start('dyn_bfr')
[2528]	304	CALL dyn_bfr( kstp ) ! bottom friction
[3432]	305	!CALL timing_stop('dyn_bfr','section')
[3837]	306
	307	!CALL dump_array(kstp,'ua_pre_zdf',ua(:,:,27), &
	308	! withHalos=.TRUE.)
[3432]	309
	310	!CALL timing_start('dyn_zdf')
[1492]	311	CALL dyn_zdf( kstp ) ! vertical diffusion
[3432]	312	!CALL timing_stop('dyn_zdf','section')
[3837]	313
	314	!CALL dump_array(kstp,'ua_pre_spg',ua(:,:,27), &
	315	! withHalos=.TRUE.)
[3432]	316
	317	!CALL timing_start('dyn_spg')
[1492]	318	CALL dyn_spg( kstp, indic ) ! surface pressure gradient
[3432]	319	!CALL timing_stop('dyn_spg','section')
[3837]	320	!CALL dump_array(kstp,'ua_spg',ua(:,:,27), &
	321	! withHalos=.TRUE.)
[3432]	322
	323	!CALL timing_start('dyn_nxt')
[1492]	324	CALL dyn_nxt( kstp ) ! lateral velocity at next time step
[3432]	325	!CALL timing_stop('dyn_nxt','section')
[3]	326
[3837]	327	!CALL timing_stop('dyn_nxt','section')
	328
[3432]	329	!CALL timing_start('ssh_nxt')
[1492]	330	CALL ssh_nxt( kstp ) ! sea surface height at next time step
[3432]	331	!CALL timing_stop('ssh_nxt','section')
[593]	332
[2528]	333	IF( ln_diahsb ) CALL dia_hsb( kstp ) ! - ML - global conservation diagnostics
[3187]	334	IF( lk_diaobs ) CALL dia_obs( kstp ) ! obs-minus-model (assimilation) diagnostics
	335	! ! (call after dynamics update)
[3432]	336	CALL timing_stop('Dynamics','section')
[2528]	337
[3]	338	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[888]	339	! Control and restarts
[3]	340	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[3432]	341	CALL timing_start('Control')
	342
[1492]	343	CALL stp_ctl( kstp, indic )
	344	IF( indic < 0 ) THEN
	345	CALL ctl_stop( 'step: indic < 0' )
	346	CALL dia_wri_state( 'output.abort', kstp )
[1482]	347	ENDIF
[1492]	348	IF( kstp == nit000 ) CALL iom_close( numror ) ! close input ocean restart file
	349	IF( lrst_oce ) CALL rst_write ( kstp ) ! write output ocean restart file
	350	IF( lk_obc ) CALL obc_rst_write( kstp ) ! write open boundary restart file
[3432]	351	! ARP - no 'section' arg here so the time taken
	352	! in this region (which can involve IO) is
	353	! subtracted from the time
	354	! taken to do the whole step.
	355	CALL timing_stop('Control')
[508]	356	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[1492]	357	! Trends (ua, va, ta, sa used as workspace)
[508]	358	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[1492]	359	IF( nstop == 0 ) THEN
	360	IF( lk_trddyn ) CALL trd_dwr( kstp ) ! trends: dynamics
	361	IF( lk_trdtra ) CALL trd_twr( kstp ) ! trends: active tracers
	362	IF( lk_trdmld ) CALL trd_mld( kstp ) ! trends: Mixed-layer
	363	IF( lk_trdvor ) CALL trd_vor( kstp ) ! trends: vorticity budget
[75]	364	ENDIF
[3]	365
[75]	366	!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	367	! Coupled mode
	368	!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[1492]	369	IF( lk_cpl ) CALL sbc_cpl_snd( kstp ) ! coupled mode : field exchanges
[508]	370	!
[3432]	371	CALL timing_stop('Step', 'section')
	372
[1481]	373	!
[3432]	374	IF( kstp == nit000 ) CALL timing_reset ! Exclude first step from timing
	375	IF( kstp == (nitend-2) ) CALL timing_disable() ! Turn off timing two steps from end to avoid the IO
	376	!
	377
[3]	378	END SUBROUTINE stp
	379
	380	!!======================================================================
	381	END MODULE step

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