| 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 | !! 3.6 ! 2012-07 (J. Simeon, G. Madec. C. Ethe) Online coarsening of outputs |
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| 27 | !! 3.6 ! 2014-04 (F. Roquet, G. Madec) New equations of state |
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| 28 | !! 3.6 ! 2014-10 (E. Clementi, P. Oddo) Add Qiao vertical mixing in case of waves |
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| 29 | !! 3.7 ! 2014-10 (G. Madec) LDF simplication |
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| 30 | !! - ! 2014-12 (G. Madec) remove KPP scheme |
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| 31 | !! - ! 2015-11 (J. Chanut) free surface simplification (remove filtered free surface) |
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| 32 | !! 4.0 ! 2017-05 (G. Madec) introduction of the vertical physics manager (zdfphy) |
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| 33 | !! 4.1 ! 2019-08 (A. Coward, D. Storkey) rewrite in preparation for new timestepping scheme |
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| 34 | !!---------------------------------------------------------------------- |
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| 35 | |
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| 36 | !!---------------------------------------------------------------------- |
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| 37 | !! stp : OPA system time-stepping |
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| 38 | !!---------------------------------------------------------------------- |
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| 39 | USE step_oce ! time stepping definition modules |
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| 40 | ! |
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| 41 | USE iom ! xIOs server |
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| 42 | |
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| 43 | IMPLICIT NONE |
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| 44 | PRIVATE |
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| 45 | |
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| 46 | PUBLIC stp ! called by nemogcm.F90 |
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| 47 | |
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| 48 | !!---------------------------------------------------------------------- |
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| 49 | !! time level indices |
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| 50 | !!---------------------------------------------------------------------- |
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| 51 | INTEGER, PUBLIC :: Nbb, Nnn, Naa, Nrhs !! used by nemo_init |
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| 52 | |
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| 53 | !!---------------------------------------------------------------------- |
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| 54 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 55 | !! $Id$ |
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| 56 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 57 | !!---------------------------------------------------------------------- |
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| 58 | CONTAINS |
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| 59 | |
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| 60 | #if defined key_agrif |
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| 61 | RECURSIVE SUBROUTINE stp( ) |
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| 62 | INTEGER :: kstp ! ocean time-step index |
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| 63 | #else |
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| 64 | SUBROUTINE stp( kstp ) |
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| 65 | INTEGER, INTENT(in) :: kstp ! ocean time-step index |
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| 66 | #endif |
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| 67 | !!---------------------------------------------------------------------- |
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| 68 | !! *** ROUTINE stp *** |
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| 69 | !! |
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| 70 | !! ** Purpose : - Time stepping of OPA (momentum and active tracer eqs.) |
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| 71 | !! - Time stepping of SI3 (dynamic and thermodynamic eqs.) |
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| 72 | !! - Time stepping of TRC (passive tracer eqs.) |
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| 73 | !! |
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| 74 | !! ** Method : -1- Update forcings and data |
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| 75 | !! -2- Update ocean physics |
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| 76 | !! -3- Compute the t and s trends |
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| 77 | !! -4- Update t and s |
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| 78 | !! -5- Compute the momentum trends |
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| 79 | !! -6- Update the horizontal velocity |
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| 80 | !! -7- Compute the diagnostics variables (rd,N2, hdiv,w) |
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| 81 | !! -8- Outputs and diagnostics |
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| 82 | !!---------------------------------------------------------------------- |
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| 83 | INTEGER :: ji, jj, jk ! dummy loop indice |
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| 84 | INTEGER :: indic ! error indicator if < 0 |
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| 85 | !!gm kcall can be removed, I guess |
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| 86 | INTEGER :: kcall ! optional integer argument (dom_vvl_sf_nxt) |
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| 87 | !! --------------------------------------------------------------------- |
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| 88 | #if defined key_agrif |
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| 89 | kstp = nit000 + Agrif_Nb_Step() |
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| 90 | Kbb_a = Nbb; Kmm_a = Nnn; Krhs_a = Nrhs ! agrif_oce module copies of time level indices |
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| 91 | IF( lk_agrif_debug ) THEN |
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| 92 | IF( Agrif_Root() .and. lwp) WRITE(*,*) '---' |
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| 93 | IF(lwp) WRITE(*,*) 'Grid Number', Agrif_Fixed(),' time step ', kstp, 'int tstep', Agrif_NbStepint() |
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| 94 | ENDIF |
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| 95 | IF( kstp == nit000 + 1 ) lk_agrif_fstep = .FALSE. |
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| 96 | # if defined key_iomput |
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| 97 | IF( Agrif_Nbstepint() == 0 ) CALL iom_swap( cxios_context ) |
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| 98 | # endif |
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| 99 | #endif |
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| 100 | ! |
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| 101 | IF( ln_timing ) CALL timing_start('stp') |
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| 102 | ! |
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| 103 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 104 | ! model timestep |
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| 105 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 106 | ! |
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| 107 | IF( l_1st_euler ) THEN ; r2dt = rn_Dt ! start or restart with Euler 1st time-step |
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| 108 | ELSE ; r2dt = 2._wp * rn_Dt ! restart with leapfrog |
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| 109 | ENDIF |
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| 110 | r1_2dt = 1._wp / r2dt |
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| 111 | ! |
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| 112 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 113 | ! update I/O and calendar |
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| 114 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 115 | indic = 0 ! reset to no error condition |
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| 116 | |
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| 117 | IF( kstp == nit000 ) THEN ! initialize IOM context (must be done after nemo_init for AGRIF+XIOS+OASIS) |
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| 118 | CALL iom_init( cxios_context, ld_closedef=.FALSE. ) ! for model grid (including passible AGRIF zoom) |
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| 119 | IF( lk_diamlr ) CALL dia_mlr_iom_init ! with additional setup for multiple-linear-regression analysis |
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| 120 | CALL iom_init_closedef |
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| 121 | IF( ln_crs ) CALL iom_init( TRIM(cxios_context)//"_crs" ) ! for coarse grid |
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| 122 | ENDIF |
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| 123 | IF( kstp /= nit000 ) CALL day( kstp ) ! Calendar (day was already called at nit000 in day_init) |
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| 124 | CALL iom_setkt( kstp - nit000 + 1, cxios_context ) ! tell IOM we are at time step kstp |
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| 125 | 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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| 126 | |
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| 127 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 128 | ! Update external forcing (tides, open boundaries, ice shelf interaction and surface boundary condition (including sea-ice) |
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| 129 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 130 | IF( ln_tide ) CALL tide_update( kstp ) ! update tide potential |
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| 131 | IF( ln_apr_dyn ) CALL sbc_apr ( kstp ) ! atmospheric pressure (NB: call before bdy_dta which needs ssh_ib) |
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| 132 | IF( ln_bdy ) CALL bdy_dta ( kstp, Nnn ) ! update dynamic & tracer data at open boundaries |
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| 133 | IF( ln_isf ) CALL isf_stp ( kstp, Nnn ) |
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| 134 | CALL sbc ( kstp, Nbb, Nnn ) ! Sea Boundary Condition (including sea-ice) |
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| 135 | |
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| 136 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 137 | ! Update stochastic parameters and random T/S fluctuations |
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| 138 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 139 | IF( ln_sto_eos ) CALL sto_par( kstp ) ! Stochastic parameters |
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| 140 | IF( ln_sto_eos ) CALL sto_pts( ts(:,:,:,:,Nnn) ) ! Random T/S fluctuations |
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| 141 | |
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| 142 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 143 | ! Ocean physics update |
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| 144 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 145 | ! THERMODYNAMICS |
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| 146 | CALL eos_rab( ts(:,:,:,:,Nbb), rab_b, Nnn ) ! before local thermal/haline expension ratio at T-points |
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| 147 | CALL eos_rab( ts(:,:,:,:,Nnn), rab_n, Nnn ) ! now local thermal/haline expension ratio at T-points |
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| 148 | CALL bn2 ( ts(:,:,:,:,Nbb), rab_b, rn2b, Nnn ) ! before Brunt-Vaisala frequency |
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| 149 | CALL bn2 ( ts(:,:,:,:,Nnn), rab_n, rn2, Nnn ) ! now Brunt-Vaisala frequency |
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| 150 | |
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| 151 | ! VERTICAL PHYSICS |
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| 152 | CALL zdf_phy( kstp, Nbb, Nnn, Nrhs ) ! vertical physics update (top/bot drag, avt, avs, avm + MLD) |
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| 153 | |
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| 154 | ! LATERAL PHYSICS |
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| 155 | ! |
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| 156 | IF( l_ldfslp ) THEN ! slope of lateral mixing |
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| 157 | CALL eos( ts(:,:,:,:,Nbb), rhd, gdept_0(:,:,:) ) ! before in situ density |
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| 158 | |
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| 159 | IF( ln_zps .AND. .NOT. ln_isfcav) & |
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| 160 | & CALL zps_hde ( kstp, Nnn, jpts, ts(:,:,:,:,Nbb), gtsu, gtsv, & ! Partial steps: before horizontal gradient |
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| 161 | & rhd, gru , grv ) ! of t, s, rd at the last ocean level |
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| 162 | |
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| 163 | IF( ln_zps .AND. ln_isfcav) & |
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| 164 | & CALL zps_hde_isf( kstp, Nnn, jpts, ts(:,:,:,:,Nbb), gtsu, gtsv, gtui, gtvi, & ! Partial steps for top cell (ISF) |
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| 165 | & rhd, gru , grv , grui, grvi ) ! of t, s, rd at the first ocean level |
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| 166 | IF( ln_traldf_triad ) THEN |
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| 167 | CALL ldf_slp_triad( kstp, Nbb, Nnn ) ! before slope for triad operator |
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| 168 | ELSE |
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| 169 | CALL ldf_slp ( kstp, rhd, rn2b, Nbb, Nnn ) ! before slope for standard operator |
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| 170 | ENDIF |
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| 171 | ENDIF |
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| 172 | ! ! eddy diffusivity coeff. |
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| 173 | IF( l_ldftra_time .OR. l_ldfeiv_time ) CALL ldf_tra( kstp, Nbb, Nnn ) ! and/or eiv coeff. |
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| 174 | IF( l_ldfdyn_time ) CALL ldf_dyn( kstp, Nbb ) ! eddy viscosity coeff. |
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| 175 | |
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| 176 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 177 | ! Ocean dynamics : hdiv, ssh, e3, u, v, w |
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| 178 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 179 | |
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| 180 | CALL ssh_nxt ( kstp, Nbb, Nnn, ssh, Naa ) ! after ssh (includes call to div_hor) |
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| 181 | IF( .NOT.ln_linssh ) CALL dom_vvl_sf_nxt( kstp, Nbb, Nnn, Naa ) ! after vertical scale factors |
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| 182 | CALL wzv ( kstp, Nbb, Nnn, ww, Naa ) ! now cross-level velocity |
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| 183 | IF( ln_zad_Aimp ) CALL wAimp ( kstp, Nnn ) ! Adaptive-implicit vertical advection partitioning |
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| 184 | CALL eos ( ts(:,:,:,:,Nnn), rhd, rhop, gdept(:,:,:,Nnn) ) ! now in situ density for hpg computation |
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| 185 | |
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| 186 | |
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| 187 | uu(:,:,:,Nrhs) = 0._wp ! set dynamics trends to zero |
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| 188 | vv(:,:,:,Nrhs) = 0._wp |
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| 189 | |
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| 190 | IF( lk_asminc .AND. ln_asmiau .AND. ln_dyninc ) & |
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| 191 | & CALL dyn_asm_inc ( kstp, Nbb, Nnn, uu, vv, Nrhs ) ! apply dynamics assimilation increment |
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| 192 | IF( ln_bdy ) CALL bdy_dyn3d_dmp ( kstp, Nbb, uu, vv, Nrhs ) ! bdy damping trends |
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| 193 | #if defined key_agrif |
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| 194 | IF(.NOT. Agrif_Root()) & |
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| 195 | & CALL Agrif_Sponge_dyn ! momentum sponge |
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| 196 | #endif |
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| 197 | CALL dyn_adv( kstp, Nbb, Nnn , uu, vv, Nrhs ) ! advection (VF or FF) ==> RHS |
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| 198 | CALL dyn_vor( kstp, Nnn , uu, vv, Nrhs ) ! vorticity ==> RHS |
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| 199 | CALL dyn_ldf( kstp, Nbb, Nnn , uu, vv, Nrhs ) ! lateral mixing |
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| 200 | IF( ln_zdfosm ) CALL dyn_osm( kstp, Nnn , uu, vv, Nrhs ) ! OSMOSIS non-local velocity fluxes ==> RHS |
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| 201 | CALL dyn_hpg( kstp, Nnn , uu, vv, Nrhs ) ! horizontal gradient of Hydrostatic pressure |
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| 202 | CALL dyn_spg( kstp, Nbb, Nnn, Nrhs, uu, vv, ssh, uu_b, vv_b, Naa ) ! surface pressure gradient |
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| 203 | |
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| 204 | ! With split-explicit free surface, since now transports have been updated and ssh(:,:,Nrhs) as well |
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| 205 | IF( ln_dynspg_ts ) THEN ! vertical scale factors and vertical velocity need to be updated |
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| 206 | CALL div_hor ( kstp, Nbb, Nnn ) ! Horizontal divergence (2nd call in time-split case) |
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| 207 | IF(.NOT.ln_linssh) CALL dom_vvl_sf_nxt( kstp, Nbb, Nnn, Naa, kcall=2 ) ! after vertical scale factors (update depth average component) |
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| 208 | ENDIF |
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| 209 | CALL dyn_zdf ( kstp, Nbb, Nnn, Nrhs, uu, vv, Naa ) ! vertical diffusion |
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| 210 | IF( ln_dynspg_ts ) THEN ! vertical scale factors and vertical velocity need to be updated |
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| 211 | CALL wzv ( kstp, Nbb, Nnn, ww, Naa ) ! now cross-level velocity |
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| 212 | IF( ln_zad_Aimp ) CALL wAimp ( kstp, Nnn ) ! Adaptive-implicit vertical advection partitioning |
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| 213 | ENDIF |
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| 214 | |
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| 215 | |
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| 216 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 217 | ! cool skin |
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| 218 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 219 | IF ( ln_diurnal ) CALL diurnal_layers( kstp ) |
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| 220 | |
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| 221 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 222 | ! diagnostics and outputs |
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| 223 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 224 | IF( ln_floats ) CALL flo_stp ( kstp, Nbb, Nnn ) ! drifting Floats |
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| 225 | IF( ln_diacfl ) CALL dia_cfl ( kstp, Nnn ) ! Courant number diagnostics |
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| 226 | CALL dia_hth ( kstp, Nnn ) ! Thermocline depth (20 degres isotherm depth) |
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| 227 | IF( ln_diadct ) CALL dia_dct ( kstp, Nnn ) ! Transports |
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| 228 | CALL dia_ar5 ( kstp, Nnn ) ! ar5 diag |
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| 229 | CALL dia_ptr ( kstp, Nnn ) ! Poleward adv/ldf TRansports diagnostics |
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| 230 | CALL dia_wri ( kstp, Nnn ) ! ocean model: outputs |
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| 231 | IF( ln_crs ) CALL crs_fld ( kstp, Nnn ) ! ocean model: online field coarsening & output |
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| 232 | IF( lk_diadetide ) CALL dia_detide( kstp ) ! Weights computation for daily detiding of model diagnostics |
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| 233 | IF( lk_diamlr ) CALL dia_mlr ! Update time used in multiple-linear-regression analysis |
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| 234 | |
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| 235 | #if defined key_top |
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| 236 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 237 | ! Passive Tracer Model |
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| 238 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 239 | CALL trc_stp ( kstp, Nbb, Nnn, Nrhs, Naa ) ! time-stepping |
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| 240 | #endif |
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| 241 | |
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| 242 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 243 | ! Active tracers |
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| 244 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 245 | ts(:,:,:,:,Nrhs) = 0._wp ! set tracer trends to zero |
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| 246 | |
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| 247 | IF( lk_asminc .AND. ln_asmiau .AND. & |
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| 248 | & ln_trainc ) CALL tra_asm_inc( kstp, Nbb, Nnn, ts, Nrhs ) ! apply tracer assimilation increment |
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| 249 | CALL tra_sbc ( kstp, Nnn, ts, Nrhs ) ! surface boundary condition |
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| 250 | IF( ln_traqsr ) CALL tra_qsr ( kstp, Nnn, ts, Nrhs ) ! penetrative solar radiation qsr |
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| 251 | IF( ln_isf ) CALL tra_isf ( kstp, Nnn, ts, Nrhs ) ! ice shelf heat flux |
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| 252 | IF( ln_trabbc ) CALL tra_bbc ( kstp, Nnn, ts, Nrhs ) ! bottom heat flux |
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| 253 | IF( ln_trabbl ) CALL tra_bbl ( kstp, Nbb, Nnn, ts, Nrhs ) ! advective (and/or diffusive) bottom boundary layer scheme |
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| 254 | IF( ln_tradmp ) CALL tra_dmp ( kstp, Nbb, Nnn, ts, Nrhs ) ! internal damping trends |
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| 255 | IF( ln_bdy ) CALL bdy_tra_dmp( kstp, Nbb, ts, Nrhs ) ! bdy damping trends |
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| 256 | #if defined key_agrif |
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| 257 | IF(.NOT. Agrif_Root()) & |
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| 258 | & CALL Agrif_Sponge_tra ! tracers sponge |
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| 259 | #endif |
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| 260 | CALL tra_adv ( kstp, Nbb, Nnn, ts, Nrhs ) ! hor. + vert. advection ==> RHS |
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| 261 | IF( ln_zdfosm ) CALL tra_osm ( kstp, Nnn, ts, Nrhs ) ! OSMOSIS non-local tracer fluxes ==> RHS |
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| 262 | IF( lrst_oce .AND. ln_zdfosm ) & |
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| 263 | & CALL osm_rst ( kstp, Nnn, 'WRITE' ) ! write OSMOSIS outputs + ww (so must do here) to restarts |
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| 264 | CALL tra_ldf ( kstp, Nbb, Nnn, ts, Nrhs ) ! lateral mixing |
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| 265 | |
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| 266 | CALL tra_zdf ( kstp, Nbb, Nnn, Nrhs, ts, Naa ) ! vertical mixing and after tracer fields |
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| 267 | IF( ln_zdfnpc ) CALL tra_npc ( kstp, Nnn, Nrhs, ts, Naa ) ! update after fields by non-penetrative convection |
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| 268 | |
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| 269 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 270 | ! Set boundary conditions, time filter and swap time levels |
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| 271 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 272 | !!jc1: For agrif, it would be much better to finalize tracers/momentum here (e.g. bdy conditions) and move the swap |
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| 273 | !! (and time filtering) after Agrif update. Then restart would be done after and would contain updated fields. |
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| 274 | !! If so: |
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| 275 | !! (i) no need to call agrif update at initialization time |
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| 276 | !! (ii) no need to update "before" fields |
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| 277 | !! |
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| 278 | !! Apart from creating new tra_swp/dyn_swp routines, this however: |
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| 279 | !! (i) makes boundary conditions at initialization time computed from updated fields which is not the case between |
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| 280 | !! two restarts => restartability issue. One can circumvent this, maybe, by assuming "interface separation", |
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| 281 | !! e.g. a shift of the feedback interface inside child domain. |
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| 282 | !! (ii) requires that all restart outputs of updated variables by agrif (e.g. passive tracers/tke/barotropic arrays) are done at the same |
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| 283 | !! place. |
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| 284 | !! |
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| 285 | !!jc2: dynnxt must be the latest call. e3t(:,:,:,Nbb) are indeed updated in that routine |
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| 286 | CALL tra_atf ( kstp, Nbb, Nnn, Naa, ts ) ! time filtering of "now" tracer arrays |
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| 287 | CALL dyn_atf ( kstp, Nbb, Nnn, Naa, uu, vv, e3t, e3u, e3v ) ! time filtering of "now" velocities and scale factors |
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| 288 | CALL ssh_atf ( kstp, Nbb, Nnn, Naa, ssh ) ! time filtering of "now" sea surface height |
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| 289 | ! |
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| 290 | ! Swap time levels |
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| 291 | Nrhs = Nbb |
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| 292 | Nbb = Nnn |
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| 293 | Nnn = Naa |
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| 294 | Naa = Nrhs |
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| 295 | ! |
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| 296 | IF(.NOT.ln_linssh) CALL dom_vvl_sf_update( kstp, Nbb, Nnn, Naa ) ! recompute vertical scale factors |
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| 297 | ! |
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| 298 | IF( ln_diahsb ) CALL dia_hsb ( kstp, Nbb, Nnn ) ! - ML - global conservation diagnostics |
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| 299 | |
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| 300 | !!gm : This does not only concern the dynamics ==>>> add a new title |
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| 301 | !!gm2: why ouput restart before AGRIF update? |
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| 302 | !! |
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| 303 | !!jc: That would be better, but see comment above |
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| 304 | !! |
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| 305 | IF( lrst_oce ) CALL rst_write ( kstp, Nbb, Nnn ) ! write output ocean restart file |
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| 306 | IF( ln_sto_eos ) CALL sto_rst_write( kstp ) ! write restart file for stochastic parameters |
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| 307 | |
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| 308 | #if defined key_agrif |
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| 309 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 310 | ! AGRIF |
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| 311 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 312 | Kbb_a = Nbb; Kmm_a = Nnn; Krhs_a = Nrhs ! agrif_oce module copies of time level indices |
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| 313 | CALL Agrif_Integrate_ChildGrids( stp ) ! allows to finish all the Child Grids before updating |
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| 314 | |
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| 315 | IF( Agrif_NbStepint() == 0 ) THEN |
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| 316 | CALL Agrif_update_all( ) ! Update all components |
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| 317 | ENDIF |
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| 318 | #endif |
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| 319 | IF( ln_diaobs ) CALL dia_obs ( kstp, Nnn ) ! obs-minus-model (assimilation) diagnostics (call after dynamics update) |
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| 320 | |
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| 321 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 322 | ! Control |
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| 323 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 324 | CALL stp_ctl ( kstp, Nbb, Nnn, indic ) |
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| 325 | |
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| 326 | IF( kstp == nit000 ) THEN ! 1st time step only |
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| 327 | CALL iom_close( numror ) ! close input ocean restart file |
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| 328 | IF(lwm) CALL FLUSH ( numond ) ! flush output namelist oce |
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| 329 | IF(lwm .AND. numoni /= -1 ) CALL FLUSH ( numoni ) ! flush output namelist ice (if exist) |
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| 330 | ENDIF |
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| 331 | |
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| 332 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 333 | ! Coupled mode |
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| 334 | !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 335 | !!gm why lk_oasis and not lk_cpl ???? |
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| 336 | IF( lk_oasis ) CALL sbc_cpl_snd( kstp, Nbb, Nnn ) ! coupled mode : field exchanges |
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| 337 | ! |
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| 338 | #if defined key_iomput |
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| 339 | IF( kstp == nitend .OR. indic < 0 ) THEN |
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| 340 | CALL iom_context_finalize( cxios_context ) ! needed for XIOS+AGRIF |
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| 341 | IF(lrxios) CALL iom_context_finalize( crxios_context ) |
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| 342 | IF( ln_crs ) CALL iom_context_finalize( trim(cxios_context)//"_crs" ) ! |
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| 343 | ENDIF |
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| 344 | #endif |
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| 345 | ! |
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| 346 | IF( l_1st_euler ) l_1st_euler = .FALSE. ! recover Leap-frog timestep |
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| 347 | ! |
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| 348 | IF( ln_timing ) CALL timing_stop('stp') |
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| 349 | ! |
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| 350 | END SUBROUTINE stp |
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| 351 | ! |
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| 352 | !!====================================================================== |
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| 353 | END MODULE step |
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