| 1 | MODULE step |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE step *** |
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| 4 | !! Time-stepping : manager of the ocean, tracer and ice time stepping |
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| 5 | !!====================================================================== |
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| 6 | !! History : OPA ! 1991-03 (G. Madec) Original code |
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| 7 | !! - ! 1991-11 (G. Madec) |
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| 8 | !! - ! 1992-06 (M. Imbard) add a first output record |
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| 9 | !! - ! 1996-04 (G. Madec) introduction of dynspg |
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| 10 | !! - ! 1996-04 (M.A. Foujols) introduction of passive tracer |
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| 11 | !! 8.0 ! 1997-06 (G. Madec) new architecture of call |
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| 12 | !! 8.2 ! 1997-06 (G. Madec, M. Imbard, G. Roullet) free surface |
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| 13 | !! - ! 1999-02 (G. Madec, N. Grima) hpg implicit |
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| 14 | !! - ! 2000-07 (J-M Molines, M. Imbard) Open Bondary Conditions |
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| 15 | !! NEMO 1.0 ! 2002-06 (G. Madec) free form, suppress macro-tasking |
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| 16 | !! - ! 2004-08 (C. Talandier) New trends organization |
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| 17 | !! - ! 2005-01 (C. Ethe) Add the KPP closure scheme |
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| 18 | !! - ! 2005-11 (G. Madec) Reorganisation of tra and dyn calls |
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| 19 | !! - ! 2006-01 (L. Debreu, C. Mazauric) Agrif implementation |
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| 20 | !! - ! 2006-07 (S. Masson) restart using iom |
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| 21 | !! 3.2 ! 2009-02 (G. Madec, R. Benshila) reintroduicing z*-coordinate |
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| 22 | !! - ! 2009-06 (S. Masson, G. Madec) TKE restart compatible with key_cpl |
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| 23 | !! 3.3 ! 2010-05 (K. Mogensen, A. Weaver, M. Martin, D. Lea) Assimilation interface |
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| 24 | !! - ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase + merge TRC-TRA |
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| 25 | !! 3.4 ! 2011-04 (G. Madec, C. Ethe) Merge of dtatem and dtasal |
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| 26 | !! ! 2012-07 (J. Simeon, G. Madec, C. Ethe) Online coarsening of outputs |
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| 27 | !! 3.7 ! 2014-04 (F. Roquet, G. Madec) New equations of state |
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| 28 | !!---------------------------------------------------------------------- |
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| 29 | |
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| 30 | !!---------------------------------------------------------------------- |
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| 31 | !! stp : OPA system time-stepping |
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| 32 | !!---------------------------------------------------------------------- |
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| 33 | USE step_oce ! time stepping definition modules |
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| 34 | USE iom |
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| 35 | |
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| 36 | IMPLICIT NONE |
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| 37 | PRIVATE |
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| 38 | |
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| 39 | PUBLIC stp ! called by opa.F90 |
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| 40 | |
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| 41 | !! * Substitutions |
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| 42 | # include "domzgr_substitute.h90" |
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| 43 | !!gm # include "zdfddm_substitute.h90" |
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| 44 | !!---------------------------------------------------------------------- |
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| 45 | !! NEMO/OPA 3.7 , NEMO Consortium (2014) |
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| 46 | !! $Id$ |
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| 47 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 48 | !!---------------------------------------------------------------------- |
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| 49 | CONTAINS |
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| 50 | |
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| 51 | #if defined key_agrif |
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| 52 | SUBROUTINE stp( ) |
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| 53 | INTEGER :: kstp ! ocean time-step index |
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| 54 | #else |
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| 55 | SUBROUTINE stp( kstp ) |
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| 56 | INTEGER, INTENT(in) :: kstp ! ocean time-step index |
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| 57 | #endif |
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| 58 | !!---------------------------------------------------------------------- |
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| 59 | !! *** ROUTINE stp *** |
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| 60 | !! |
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| 61 | !! ** Purpose : - Time stepping of OPA (momentum and active tracer eqs.) |
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| 62 | !! - Time stepping of LIM (dynamic and thermodynamic eqs.) |
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| 63 | !! - Tme stepping of TRC (passive tracer eqs.) |
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| 64 | !! |
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| 65 | !! ** Method : -1- Update forcings and data |
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| 66 | !! -2- Update ocean physics |
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| 67 | !! -3- Compute the t and s trends |
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| 68 | !! -4- Update t and s |
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| 69 | !! -5- Compute the momentum trends |
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| 70 | !! -6- Update the horizontal velocity |
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| 71 | !! -7- Compute the diagnostics variables (rd,N2, div,cur,w) |
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| 72 | !! -8- Outputs and diagnostics |
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| 73 | !!---------------------------------------------------------------------- |
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| 74 | INTEGER :: jk ! dummy loop indice |
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| 75 | INTEGER :: indic ! error indicator if < 0 |
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| 76 | INTEGER :: kcall ! optional integer argument (dom_vvl_sf_nxt) |
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| 77 | !! --------------------------------------------------------------------- |
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| 78 | |
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| 79 | #if defined key_agrif |
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| 80 | kstp = nit000 + Agrif_Nb_Step() |
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| 81 | ! IF ( Agrif_Root() .and. lwp) Write(*,*) '---' |
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| 82 | ! IF (lwp) Write(*,*) 'Grid Number',Agrif_Fixed(),' time step ',kstp |
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| 83 | IF ( kstp == (nit000 + 1) ) lk_agrif_fstep = .FALSE. |
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| 84 | # if defined key_iomput |
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| 85 | IF( Agrif_Nbstepint() == 0 ) CALL iom_swap( cxios_context ) |
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| 86 | # endif |
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| 87 | #endif |
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| 88 | indic = 0 ! reset to no error condition |
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| 89 | IF( kstp == nit000 ) THEN |
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| 90 | ! must be done after nemo_init for AGRIF+XIOS+OASIS |
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| 91 | CALL iom_init( cxios_context ) ! iom_put initialization |
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| 92 | IF( ln_crs ) CALL iom_init( TRIM(cxios_context)//"_crs" ) ! initialize context for coarse grid |
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| 93 | ENDIF |
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| 94 | |
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| 95 | IF( kstp /= nit000 ) CALL day( kstp ) ! Calendar (day was already called at nit000 in day_init) |
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| 96 | CALL iom_setkt( kstp - nit000 + 1, cxios_context ) ! tell iom we are at time step kstp |
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| 97 | IF( ln_crs ) CALL iom_setkt( kstp - nit000 + 1, TRIM(cxios_context)//"_crs" ) ! tell iom we are at time step kstp |
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| 98 | |
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| 99 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 100 | ! Update data, open boundaries, surface boundary condition (including sea-ice) |
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| 101 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 102 | IF( lk_tide ) CALL sbc_tide( kstp ) |
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| 103 | IF( lk_bdy ) THEN |
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| 104 | IF( ln_apr_dyn) CALL sbc_apr( kstp ) ! bdy_dta needs ssh_ib |
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| 105 | CALL bdy_dta ( kstp, time_offset=+1 ) ! update dynamic & tracer data at open boundaries |
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| 106 | ENDIF |
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| 107 | CALL sbc ( kstp ) ! Sea Boundary Condition (including sea-ice) |
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| 108 | ! clem: moved here for bdy ice purpose |
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| 109 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 110 | ! Update stochastic parameters and random T/S fluctuations |
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| 111 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 112 | CALL sto_par( kstp ) ! Stochastic parameters |
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| 113 | |
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| 114 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 115 | ! Ocean physics update (ua, va, tsa used as workspace) |
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| 116 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 117 | ! THERMODYNAMICS |
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| 118 | CALL eos_rab( tsb, rab_b ) ! before local thermal/haline expension ratio at T-points |
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| 119 | CALL eos_rab( tsn, rab_n ) ! now local thermal/haline expension ratio at T-points |
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| 120 | CALL bn2 ( tsb, rab_b, rn2b ) ! before Brunt-Vaisala frequency |
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| 121 | CALL bn2 ( tsn, rab_n, rn2 ) ! now Brunt-Vaisala frequency |
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| 122 | ! |
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| 123 | ! VERTICAL PHYSICS |
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| 124 | CALL zdf_bfr( kstp ) ! bottom friction (if quadratic) |
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| 125 | ! ! Vertical eddy viscosity and diffusivity coefficients |
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| 126 | IF( lk_zdfric ) CALL zdf_ric( kstp ) ! Richardson number dependent Kz |
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| 127 | IF( lk_zdftke ) CALL zdf_tke( kstp ) ! TKE closure scheme for Kz |
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| 128 | IF( lk_zdfgls ) CALL zdf_gls( kstp ) ! GLS closure scheme for Kz |
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| 129 | IF( lk_zdfkpp ) CALL zdf_kpp( kstp ) ! KPP closure scheme for Kz |
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| 130 | IF( lk_zdfcst ) THEN ! Constant Kz (reset avt, avm[uv] to the background value) |
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| 131 | avt (:,:,:) = rn_avt0 * wmask (:,:,:) |
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| 132 | avmu(:,:,:) = rn_avm0 * wumask(:,:,:) |
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| 133 | avmv(:,:,:) = rn_avm0 * wvmask(:,:,:) |
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| 134 | ENDIF |
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| 135 | IF( ln_rnf_mouth ) THEN ! increase diffusivity at rivers mouths |
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| 136 | DO jk = 2, nkrnf ; avt(:,:,jk) = avt(:,:,jk) + 2.e0 * rn_avt_rnf * rnfmsk(:,:) * tmask(:,:,jk) ; END DO |
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| 137 | ENDIF |
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| 138 | IF( ln_zdfevd ) CALL zdf_evd( kstp ) ! enhanced vertical eddy diffusivity |
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| 139 | |
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| 140 | IF( lk_zdftmx ) CALL zdf_tmx( kstp ) ! tidal vertical mixing |
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| 141 | |
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| 142 | IF( lk_zdfddm .AND. .NOT. lk_zdfkpp ) & |
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| 143 | & CALL zdf_ddm( kstp ) ! double diffusive mixing |
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| 144 | |
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| 145 | CALL zdf_mxl( kstp ) ! mixed layer depth |
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| 146 | |
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| 147 | ! write TKE or GLS information in the restart file |
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| 148 | IF( lrst_oce .AND. lk_zdftke ) CALL tke_rst( kstp, 'WRITE' ) |
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| 149 | IF( lrst_oce .AND. lk_zdfgls ) CALL gls_rst( kstp, 'WRITE' ) |
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| 150 | ! |
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| 151 | ! LATERAL PHYSICS |
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| 152 | ! |
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| 153 | IF( lk_ldfslp ) THEN ! slope of lateral mixing |
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| 154 | IF(ln_sto_eos ) CALL sto_pts( tsn ) ! Random T/S fluctuations |
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| 155 | CALL eos( tsb, rhd, gdept_0(:,:,:) ) ! before in situ density |
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| 156 | IF( ln_zps .AND. .NOT. ln_isfcav) & |
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| 157 | & CALL zps_hde ( kstp, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient |
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| 158 | & rhd, gru , grv ) ! of t, s, rd at the last ocean level |
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| 159 | IF( ln_zps .AND. ln_isfcav) & |
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| 160 | & CALL zps_hde_isf( kstp, jpts, tsb, gtsu, gtsv, & ! Partial steps for top cell (ISF) |
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| 161 | & rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , & |
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| 162 | & gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the first ocean level |
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| 163 | IF( ln_traldf_grif ) THEN ! before slope for Griffies operator |
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| 164 | CALL ldf_slp_grif( kstp ) |
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| 165 | ELSE |
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| 166 | CALL ldf_slp( kstp, rhd, rn2b ) ! before slope for Madec operator |
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| 167 | ENDIF |
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| 168 | ENDIF |
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| 169 | #if defined key_traldf_c2d |
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| 170 | IF( lk_traldf_eiv ) CALL ldf_eiv( kstp ) ! eddy induced velocity coefficient |
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| 171 | #endif |
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| 172 | #if defined key_traldf_c3d && defined key_traldf_smag |
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| 173 | CALL ldf_tra_smag( kstp ) ! eddy induced velocity coefficient |
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| 174 | # endif |
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| 175 | #if defined key_dynldf_c3d && defined key_dynldf_smag |
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| 176 | CALL ldf_dyn_smag( kstp ) ! eddy induced velocity coefficient |
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| 177 | # endif |
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| 178 | |
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| 179 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 180 | ! Ocean dynamics : hdiv, rot, ssh, e3, wn |
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| 181 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 182 | CALL ssh_nxt ( kstp ) ! after ssh (includes call to div_cur) |
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| 183 | IF( lk_vvl ) CALL dom_vvl_sf_nxt( kstp ) ! after vertical scale factors |
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| 184 | CALL wzv ( kstp ) ! now cross-level velocity |
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| 185 | |
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| 186 | IF( lk_dynspg_ts ) THEN |
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| 187 | ! In case the time splitting case, update almost all momentum trends here: |
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| 188 | ! Note that the computation of vertical velocity above, hence "after" sea level |
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| 189 | ! is necessary to compute momentum advection for the rhs of barotropic loop: |
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| 190 | IF(ln_sto_eos ) CALL sto_pts( tsn ) ! Random T/S fluctuations |
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| 191 | CALL eos ( tsn, rhd, rhop, fsdept_n(:,:,:) ) ! now in situ density for hpg computation |
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| 192 | IF( ln_zps .AND. .NOT. ln_isfcav) & |
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| 193 | & CALL zps_hde ( kstp, jpts, tsn, gtsu, gtsv, & ! Partial steps: before horizontal gradient |
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| 194 | & rhd, gru , grv ) ! of t, s, rd at the last ocean level |
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| 195 | IF( ln_zps .AND. ln_isfcav) & |
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| 196 | & CALL zps_hde_isf( kstp, jpts, tsn, gtsu, gtsv, & ! Partial steps for top cell (ISF) |
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| 197 | & rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , & |
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| 198 | & gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the last ocean level |
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| 199 | |
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| 200 | ua(:,:,:) = 0.e0 ! set dynamics trends to zero |
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| 201 | va(:,:,:) = 0.e0 |
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| 202 | IF( ln_asmiau .AND. & |
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| 203 | & ln_dyninc ) CALL dyn_asm_inc ( kstp ) ! apply dynamics assimilation increment |
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| 204 | IF( ln_neptsimp ) CALL dyn_nept_cor ( kstp ) ! subtract Neptune velocities (simplified) |
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| 205 | IF( lk_bdy ) CALL bdy_dyn3d_dmp( kstp ) ! bdy damping trends |
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| 206 | CALL dyn_adv ( kstp ) ! advection (vector or flux form) |
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| 207 | CALL dyn_vor ( kstp ) ! vorticity term including Coriolis |
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| 208 | CALL dyn_ldf ( kstp ) ! lateral mixing |
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| 209 | IF( ln_neptsimp ) CALL dyn_nept_cor ( kstp ) ! add Neptune velocities (simplified) |
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| 210 | #if defined key_agrif |
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| 211 | IF(.NOT. Agrif_Root()) CALL Agrif_Sponge_dyn ! momentum sponge |
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| 212 | #endif |
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| 213 | CALL dyn_hpg( kstp ) ! horizontal gradient of Hydrostatic pressure |
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| 214 | CALL dyn_spg( kstp, indic ) ! surface pressure gradient |
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| 215 | |
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| 216 | ua_sv(:,:,:) = ua(:,:,:) ! Save trends (barotropic trend has been fully updated at this stage) |
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| 217 | va_sv(:,:,:) = va(:,:,:) |
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| 218 | |
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| 219 | CALL div_cur( kstp ) ! Horizontal divergence & Relative vorticity (2nd call in time-split case) |
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| 220 | IF( lk_vvl ) CALL dom_vvl_sf_nxt( kstp, kcall=2 ) ! after vertical scale factors (update depth average component) |
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| 221 | CALL wzv ( kstp ) ! now cross-level velocity |
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| 222 | ENDIF |
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| 223 | |
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| 224 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 225 | ! diagnostics and outputs (ua, va, tsa used as workspace) |
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| 226 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 227 | IF( lk_floats ) CALL flo_stp( kstp ) ! drifting Floats |
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| 228 | IF( lk_diahth ) CALL dia_hth( kstp ) ! Thermocline depth (20 degres isotherm depth) |
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| 229 | IF( .NOT. ln_cpl ) CALL dia_fwb( kstp ) ! Fresh water budget diagnostics |
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| 230 | IF( lk_diadct ) CALL dia_dct( kstp ) ! Transports |
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| 231 | IF( lk_diaar5 ) CALL dia_ar5( kstp ) ! ar5 diag |
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| 232 | IF( lk_diaharm ) CALL dia_harm( kstp ) ! Tidal harmonic analysis |
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| 233 | CALL dia_wri( kstp ) ! ocean model: outputs |
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| 234 | ! |
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| 235 | IF( ln_crs ) CALL crs_fld( kstp ) ! ocean model: online field coarsening & output |
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| 236 | |
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| 237 | #if defined key_top |
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| 238 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 239 | ! Passive Tracer Model |
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| 240 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 241 | CALL trc_stp( kstp ) ! time-stepping |
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| 242 | #endif |
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| 243 | |
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| 244 | |
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| 245 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 246 | ! Active tracers (ua, va used as workspace) |
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| 247 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 248 | tsa(:,:,:,:) = 0.e0 ! set tracer trends to zero |
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| 249 | |
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| 250 | IF( ln_asmiau .AND. & |
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| 251 | & ln_trainc ) CALL tra_asm_inc( kstp ) ! apply tracer assimilation increment |
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| 252 | CALL tra_sbc ( kstp ) ! surface boundary condition |
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| 253 | IF( ln_traqsr ) CALL tra_qsr ( kstp ) ! penetrative solar radiation qsr |
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| 254 | IF( ln_trabbc ) CALL tra_bbc ( kstp ) ! bottom heat flux |
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| 255 | IF( lk_trabbl ) CALL tra_bbl ( kstp ) ! advective (and/or diffusive) bottom boundary layer scheme |
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| 256 | IF( ln_tradmp ) CALL tra_dmp ( kstp ) ! internal damping trends |
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| 257 | IF( lk_bdy ) CALL bdy_tra_dmp( kstp ) ! bdy damping trends |
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| 258 | CALL tra_adv ( kstp ) ! horizontal & vertical advection |
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| 259 | IF( lk_zdfkpp ) CALL tra_kpp ( kstp ) ! KPP non-local tracer fluxes |
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| 260 | CALL tra_ldf ( kstp ) ! lateral mixing |
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| 261 | |
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| 262 | IF( ln_diaptr ) CALL dia_ptr ! Poleward adv/ldf TRansports diagnostics |
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| 263 | |
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| 264 | #if defined key_agrif |
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| 265 | IF(.NOT. Agrif_Root()) CALL Agrif_Sponge_tra ! tracers sponge |
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| 266 | #endif |
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| 267 | CALL tra_zdf ( kstp ) ! vertical mixing and after tracer fields |
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| 268 | |
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| 269 | IF( ln_dynhpg_imp ) THEN ! semi-implicit hpg (time stepping then eos) |
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| 270 | IF( ln_zdfnpc ) CALL tra_npc( kstp ) ! update after fields by non-penetrative convection |
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| 271 | CALL tra_nxt( kstp ) ! tracer fields at next time step |
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| 272 | IF( ln_sto_eos ) CALL sto_pts( tsn ) ! Random T/S fluctuations |
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| 273 | CALL eos ( tsa, rhd, rhop, fsdept_n(:,:,:) ) ! Time-filtered in situ density for hpg computation |
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| 274 | IF( ln_zps .AND. .NOT. ln_isfcav) & |
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| 275 | & CALL zps_hde ( kstp, jpts, tsa, gtsu, gtsv, & ! Partial steps: before horizontal gradient |
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| 276 | & rhd, gru , grv ) ! of t, s, rd at the last ocean level |
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| 277 | IF( ln_zps .AND. ln_isfcav) & |
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| 278 | & CALL zps_hde_isf( kstp, jpts, tsa, gtsu, gtsv, & ! Partial steps for top cell (ISF) |
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| 279 | & rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , & |
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| 280 | & gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the last ocean level |
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| 281 | ELSE ! centered hpg (eos then time stepping) |
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| 282 | IF ( .NOT. lk_dynspg_ts ) THEN ! eos already called in time-split case |
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| 283 | IF( ln_sto_eos ) CALL sto_pts( tsn ) ! Random T/S fluctuations |
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| 284 | CALL eos ( tsn, rhd, rhop, fsdept_n(:,:,:) ) ! now in situ density for hpg computation |
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| 285 | IF( ln_zps .AND. .NOT. ln_isfcav) & |
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| 286 | & CALL zps_hde ( kstp, jpts, tsn, gtsu, gtsv, & ! Partial steps: before horizontal gradient |
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| 287 | & rhd, gru , grv ) ! of t, s, rd at the last ocean level |
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| 288 | IF( ln_zps .AND. ln_isfcav) & |
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| 289 | & CALL zps_hde_isf( kstp, jpts, tsn, gtsu, gtsv, & ! Partial steps for top cell (ISF) |
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| 290 | & rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , & |
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| 291 | & gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the last ocean level |
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| 292 | ENDIF |
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| 293 | IF( ln_zdfnpc ) CALL tra_npc( kstp ) ! update after fields by non-penetrative convection |
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| 294 | CALL tra_nxt( kstp ) ! tracer fields at next time step |
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| 295 | ENDIF |
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| 296 | |
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| 297 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 298 | ! Dynamics (tsa used as workspace) |
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| 299 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 300 | IF( lk_dynspg_ts ) THEN |
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| 301 | ! revert to previously computed momentum tendencies |
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| 302 | ! (not using ua, va as temporary arrays during tracers' update could avoid that) |
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| 303 | ua(:,:,:) = ua_sv(:,:,:) |
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| 304 | va(:,:,:) = va_sv(:,:,:) |
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| 305 | ! Revert now divergence and rotational to previously computed ones |
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| 306 | !(needed because of the time swap in div_cur, at the beginning of each time step) |
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| 307 | hdivn(:,:,:) = hdivb(:,:,:) |
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| 308 | rotn(:,:,:) = rotb(:,:,:) |
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| 309 | |
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| 310 | CALL dyn_bfr( kstp ) ! bottom friction |
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| 311 | CALL dyn_zdf( kstp ) ! vertical diffusion |
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| 312 | ELSE |
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| 313 | ua(:,:,:) = 0.e0 ! set dynamics trends to zero |
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| 314 | va(:,:,:) = 0.e0 |
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| 315 | |
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| 316 | IF( ln_asmiau .AND. & |
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| 317 | & ln_dyninc ) CALL dyn_asm_inc( kstp ) ! apply dynamics assimilation increment |
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| 318 | IF( ln_bkgwri ) CALL asm_bkg_wri( kstp ) ! output background fields |
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| 319 | IF( ln_neptsimp ) CALL dyn_nept_cor( kstp ) ! subtract Neptune velocities (simplified) |
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| 320 | IF( lk_bdy ) CALL bdy_dyn3d_dmp(kstp ) ! bdy damping trends |
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| 321 | CALL dyn_adv( kstp ) ! advection (vector or flux form) |
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| 322 | CALL dyn_vor( kstp ) ! vorticity term including Coriolis |
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| 323 | CALL dyn_ldf( kstp ) ! lateral mixing |
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| 324 | IF( ln_neptsimp ) CALL dyn_nept_cor( kstp ) ! add Neptune velocities (simplified) |
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| 325 | #if defined key_agrif |
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| 326 | IF(.NOT. Agrif_Root()) CALL Agrif_Sponge_dyn ! momemtum sponge |
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| 327 | #endif |
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| 328 | CALL dyn_hpg( kstp ) ! horizontal gradient of Hydrostatic pressure |
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| 329 | CALL dyn_bfr( kstp ) ! bottom friction |
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| 330 | CALL dyn_zdf( kstp ) ! vertical diffusion |
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| 331 | CALL dyn_spg( kstp, indic ) ! surface pressure gradient |
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| 332 | ENDIF |
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| 333 | CALL dyn_nxt( kstp ) ! lateral velocity at next time step |
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| 334 | |
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| 335 | CALL ssh_swp( kstp ) ! swap of sea surface height |
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| 336 | IF( lk_vvl ) CALL dom_vvl_sf_swp( kstp ) ! swap of vertical scale factors |
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| 337 | |
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| 338 | IF( ln_diahsb ) CALL dia_hsb( kstp ) ! - ML - global conservation diagnostics |
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| 339 | IF( lk_diaobs ) CALL dia_obs( kstp ) ! obs-minus-model (assimilation) diagnostics (call after dynamics update) |
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| 340 | |
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| 341 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 342 | ! Control and restarts |
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| 343 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 344 | CALL stp_ctl( kstp, indic ) |
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| 345 | IF( indic < 0 ) THEN |
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| 346 | CALL ctl_stop( 'step: indic < 0' ) |
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| 347 | CALL dia_wri_state( 'output.abort', kstp ) |
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| 348 | ENDIF |
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| 349 | IF( kstp == nit000 ) THEN |
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| 350 | CALL iom_close( numror ) ! close input ocean restart file |
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| 351 | IF(lwm) CALL FLUSH ( numond ) ! flush output namelist oce |
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| 352 | IF( lwm.AND.numoni /= -1 ) CALL FLUSH ( numoni ) ! flush output namelist ice |
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| 353 | ENDIF |
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| 354 | IF( lrst_oce ) CALL rst_write ( kstp ) ! write output ocean restart file |
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| 355 | |
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| 356 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 357 | ! Coupled mode |
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| 358 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 359 | IF( lk_oasis ) CALL sbc_cpl_snd( kstp ) ! coupled mode : field exchanges |
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| 360 | ! |
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| 361 | #if defined key_iomput |
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| 362 | IF( kstp == nitend .OR. indic < 0 ) THEN |
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| 363 | CALL iom_context_finalize( cxios_context ) ! needed for XIOS+AGRIF |
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| 364 | IF( ln_crs ) CALL iom_context_finalize( trim(cxios_context)//"_crs" ) ! |
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| 365 | ENDIF |
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| 366 | #endif |
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| 367 | ! |
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| 368 | IF( nn_timing == 1 .AND. kstp == nit000 ) CALL timing_reset |
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| 369 | ! |
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| 370 | END SUBROUTINE stp |
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| 371 | |
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| 372 | !!====================================================================== |
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| 373 | END MODULE step |
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