[3] | 1 | MODULE restart |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE restart *** |
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| 4 | !! Ocean restart : write the ocean restart file |
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[508] | 5 | !!====================================================================== |
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[2528] | 6 | !! History : OPA ! 1999-11 (M. Imbard) Original code |
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| 7 | !! NEMO 1.0 ! 2002-08 (G. Madec) F90: Free form |
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| 8 | !! 2.0 ! 2006-07 (S. Masson) use IOM for restart |
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| 9 | !! 3.3 ! 2010-04 (M. Leclair, G. Madec) modified LF-RA |
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| 10 | !! - - ! 2010-10 (C. Ethe, G. Madec) TRC-TRA merge (T-S in 4D) |
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[5836] | 11 | !! 3.7 ! 2014-01 (G. Madec) suppression of curl and hdiv from the restart |
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| 12 | !! - ! 2014-12 (G. Madec) remove KPP scheme |
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[508] | 13 | !!---------------------------------------------------------------------- |
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[3] | 14 | |
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| 15 | !!---------------------------------------------------------------------- |
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[508] | 16 | !! rst_opn : open the ocean restart file |
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| 17 | !! rst_write : write the ocean restart file |
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| 18 | !! rst_read : read the ocean restart file |
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[3] | 19 | !!---------------------------------------------------------------------- |
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[2528] | 20 | USE oce ! ocean dynamics and tracers |
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[3] | 21 | USE dom_oce ! ocean space and time domain |
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[5836] | 22 | USE sbc_ice ! only lk_lim3 |
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[3] | 23 | USE phycst ! physical constants |
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[5836] | 24 | USE eosbn2 ! equation of state (eos bn2 routine) |
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| 25 | USE trdmxl_oce ! ocean active mixed layer tracers trends variables |
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| 26 | ! |
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[508] | 27 | USE in_out_manager ! I/O manager |
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| 28 | USE iom ! I/O module |
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[6140] | 29 | USE diurnal_bulk |
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| 30 | |
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[3] | 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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[4292] | 34 | PUBLIC rst_opn ! routine called by step module |
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| 35 | PUBLIC rst_write ! routine called by step module |
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| 36 | PUBLIC rst_read ! routine called by istate module |
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| 37 | PUBLIC rst_read_open ! routine called in rst_read and (possibly) in dom_vvl_init |
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[3] | 38 | |
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[508] | 39 | !! * Substitutions |
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| 40 | # include "vectopt_loop_substitute.h90" |
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[3] | 41 | !!---------------------------------------------------------------------- |
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[2528] | 42 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[888] | 43 | !! $Id$ |
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[2528] | 44 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[359] | 45 | !!---------------------------------------------------------------------- |
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[3] | 46 | CONTAINS |
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| 47 | |
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[508] | 48 | SUBROUTINE rst_opn( kt ) |
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| 49 | !!--------------------------------------------------------------------- |
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| 50 | !! *** ROUTINE rst_opn *** |
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| 51 | !! |
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| 52 | !! ** Purpose : + initialization (should be read in the namelist) of nitrst |
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| 53 | !! + open the restart when we are one time step before nitrst |
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| 54 | !! - restart header is defined when kt = nitrst-1 |
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| 55 | !! - restart data are written when kt = nitrst |
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| 56 | !! + define lrst_oce to .TRUE. when we need to define or write the restart |
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| 57 | !!---------------------------------------------------------------------- |
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| 58 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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| 59 | !! |
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| 60 | CHARACTER(LEN=20) :: clkt ! ocean time-step deine as a character |
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[5341] | 61 | CHARACTER(LEN=50) :: clname ! ocean output restart file name |
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| 62 | CHARACTER(lc) :: clpath ! full path to ocean output restart file |
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[508] | 63 | !!---------------------------------------------------------------------- |
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| 64 | ! |
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[783] | 65 | IF( kt == nit000 ) THEN ! default definitions |
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| 66 | lrst_oce = .FALSE. |
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[5341] | 67 | IF( ln_rst_list ) THEN |
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| 68 | nrst_lst = 1 |
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| 69 | nitrst = nstocklist( nrst_lst ) |
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| 70 | ELSE |
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| 71 | nitrst = nitend |
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| 72 | ENDIF |
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[508] | 73 | ENDIF |
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[5341] | 74 | |
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| 75 | ! frequency-based restart dumping (nn_stock) |
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| 76 | IF( .NOT. ln_rst_list .AND. MOD( kt - 1, nstock ) == 0 ) THEN |
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[783] | 77 | ! we use kt - 1 and not kt - nit000 to keep the same periodicity from the beginning of the experiment |
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| 78 | nitrst = kt + nstock - 1 ! define the next value of nitrst for restart writing |
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| 79 | IF( nitrst > nitend ) nitrst = nitend ! make sure we write a restart at the end of the run |
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| 80 | ENDIF |
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| 81 | ! to get better performances with NetCDF format: |
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| 82 | ! we open and define the ocean restart file one time step before writing the data (-> at nitrst - 1) |
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| 83 | ! except if we write ocean restart files every time step or if an ocean restart file was writen at nitend - 1 |
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| 84 | IF( kt == nitrst - 1 .OR. nstock == 1 .OR. ( kt == nitend .AND. .NOT. lrst_oce ) ) THEN |
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[5341] | 85 | IF( nitrst <= nitend .AND. nitrst > 0 ) THEN |
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| 86 | ! beware of the format used to write kt (default is i8.8, that should be large enough...) |
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| 87 | IF( nitrst > 999999999 ) THEN ; WRITE(clkt, * ) nitrst |
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| 88 | ELSE ; WRITE(clkt, '(i8.8)') nitrst |
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[611] | 89 | ENDIF |
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[5341] | 90 | ! create the file |
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| 91 | clname = TRIM(cexper)//"_"//TRIM(ADJUSTL(clkt))//"_"//TRIM(cn_ocerst_out) |
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| 92 | clpath = TRIM(cn_ocerst_outdir) |
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| 93 | IF( clpath(LEN_TRIM(clpath):) /= '/' ) clpath = TRIM(clpath) // '/' |
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| 94 | IF(lwp) THEN |
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| 95 | WRITE(numout,*) |
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| 96 | SELECT CASE ( jprstlib ) |
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| 97 | CASE DEFAULT ; WRITE(numout,*) & |
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| 98 | ' open ocean restart NetCDF file: ',TRIM(clpath)//clname |
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| 99 | END SELECT |
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| 100 | IF ( snc4set%luse ) WRITE(numout,*) ' opened for NetCDF4 chunking and compression' |
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| 101 | IF( kt == nitrst - 1 ) THEN ; WRITE(numout,*) ' kt = nitrst - 1 = ', kt |
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| 102 | ELSE ; WRITE(numout,*) ' kt = ' , kt |
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| 103 | ENDIF |
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| 104 | ENDIF |
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| 105 | ! |
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| 106 | CALL iom_open( TRIM(clpath)//TRIM(clname), numrow, ldwrt = .TRUE., kiolib = jprstlib ) |
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| 107 | lrst_oce = .TRUE. |
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[611] | 108 | ENDIF |
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[508] | 109 | ENDIF |
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| 110 | ! |
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| 111 | END SUBROUTINE rst_opn |
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| 112 | |
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| 113 | |
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[3] | 114 | SUBROUTINE rst_write( kt ) |
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| 115 | !!--------------------------------------------------------------------- |
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| 116 | !! *** ROUTINE rstwrite *** |
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| 117 | !! |
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[632] | 118 | !! ** Purpose : Write restart fields in the format corresponding to jprstlib |
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[3] | 119 | !! |
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[508] | 120 | !! ** Method : Write in numrow when kt == nitrst in NetCDF |
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[2528] | 121 | !! file, save fields which are necessary for restart |
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[3] | 122 | !!---------------------------------------------------------------------- |
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[508] | 123 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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[3] | 124 | !!---------------------------------------------------------------------- |
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[1239] | 125 | |
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[6140] | 126 | CALL iom_rstput( kt, nitrst, numrow, 'rdt' , rdt ) ! dynamics and tracer time step |
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[3] | 127 | |
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[6140] | 128 | IF ( .NOT. ln_diurnal_only ) THEN |
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[2528] | 129 | CALL iom_rstput( kt, nitrst, numrow, 'ub' , ub ) ! before fields |
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| 130 | CALL iom_rstput( kt, nitrst, numrow, 'vb' , vb ) |
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[3294] | 131 | CALL iom_rstput( kt, nitrst, numrow, 'tb' , tsb(:,:,:,jp_tem) ) |
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| 132 | CALL iom_rstput( kt, nitrst, numrow, 'sb' , tsb(:,:,:,jp_sal) ) |
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[2528] | 133 | CALL iom_rstput( kt, nitrst, numrow, 'sshb' , sshb ) |
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[4990] | 134 | ! |
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[2528] | 135 | CALL iom_rstput( kt, nitrst, numrow, 'un' , un ) ! now fields |
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| 136 | CALL iom_rstput( kt, nitrst, numrow, 'vn' , vn ) |
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[3294] | 137 | CALL iom_rstput( kt, nitrst, numrow, 'tn' , tsn(:,:,:,jp_tem) ) |
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| 138 | CALL iom_rstput( kt, nitrst, numrow, 'sn' , tsn(:,:,:,jp_sal) ) |
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[2528] | 139 | CALL iom_rstput( kt, nitrst, numrow, 'sshn' , sshn ) |
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| 140 | CALL iom_rstput( kt, nitrst, numrow, 'rhop' , rhop ) |
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[6140] | 141 | |
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| 142 | ! extra variable needed for the ice sheet coupling |
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| 143 | IF ( ln_iscpl ) THEN |
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| 144 | CALL iom_rstput( kt, nitrst, numrow, 'tmask' , tmask ) ! need to extrapolate T/S |
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| 145 | CALL iom_rstput( kt, nitrst, numrow, 'umask' , umask ) ! need to correct barotropic velocity |
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| 146 | CALL iom_rstput( kt, nitrst, numrow, 'vmask' , vmask ) ! need to correct barotropic velocity |
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| 147 | CALL iom_rstput( kt, nitrst, numrow, 'smask' , ssmask ) ! need to correct barotropic velocity |
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| 148 | CALL iom_rstput( kt, nitrst, numrow, 'e3t_n', e3t_n(:,:,:) ) ! need to compute temperature correction |
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| 149 | CALL iom_rstput( kt, nitrst, numrow, 'e3u_n', e3u_n(:,:,:) ) ! need to compute bt conservation |
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| 150 | CALL iom_rstput( kt, nitrst, numrow, 'e3v_n', e3v_n(:,:,:) ) ! need to compute bt conservation |
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| 151 | CALL iom_rstput( kt, nitrst, numrow, 'gdepw_n', gdepw_n(:,:,:) ) ! need to compute extrapolation if vvl |
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| 152 | END IF |
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| 153 | ENDIF |
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| 154 | |
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| 155 | IF (ln_diurnal) CALL iom_rstput( kt, nitrst, numrow, 'Dsst', x_dsst ) |
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| 156 | |
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[508] | 157 | IF( kt == nitrst ) THEN |
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| 158 | CALL iom_close( numrow ) ! close the restart file (only at last time step) |
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[4990] | 159 | !!gm IF( .NOT. lk_trdmld ) lrst_oce = .FALSE. |
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| 160 | !!gm not sure what to do here ===>>> ask to Sebastian |
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| 161 | lrst_oce = .FALSE. |
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[5341] | 162 | IF( ln_rst_list ) THEN |
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| 163 | nrst_lst = MIN(nrst_lst + 1, SIZE(nstocklist,1)) |
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| 164 | nitrst = nstocklist( nrst_lst ) |
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| 165 | ENDIF |
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| 166 | lrst_oce = .FALSE. |
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[3] | 167 | ENDIF |
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[508] | 168 | ! |
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[3] | 169 | END SUBROUTINE rst_write |
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| 170 | |
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[4990] | 171 | |
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[4292] | 172 | SUBROUTINE rst_read_open |
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| 173 | !!---------------------------------------------------------------------- |
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| 174 | !! *** ROUTINE rst_read_open *** |
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| 175 | !! |
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| 176 | !! ** Purpose : Open read files for restart (format fixed by jprstlib ) |
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| 177 | !! |
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| 178 | !! ** Method : Use a non-zero, positive value of numror to assess whether or not |
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| 179 | !! the file has already been opened |
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| 180 | !!---------------------------------------------------------------------- |
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[5341] | 181 | INTEGER :: jlibalt = jprstlib |
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| 182 | LOGICAL :: llok |
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| 183 | CHARACTER(lc) :: clpath ! full path to ocean output restart file |
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[4292] | 184 | !!---------------------------------------------------------------------- |
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[4990] | 185 | ! |
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| 186 | IF( numror <= 0 ) THEN |
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[4292] | 187 | IF(lwp) THEN ! Contol prints |
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| 188 | WRITE(numout,*) |
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| 189 | SELECT CASE ( jprstlib ) |
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| 190 | CASE ( jpnf90 ) ; WRITE(numout,*) 'rst_read : read oce NetCDF restart file' |
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| 191 | END SELECT |
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| 192 | IF ( snc4set%luse ) WRITE(numout,*) 'rst_read : configured with NetCDF4 support' |
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| 193 | WRITE(numout,*) '~~~~~~~~' |
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| 194 | ENDIF |
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| 195 | |
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[5341] | 196 | clpath = TRIM(cn_ocerst_indir) |
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| 197 | IF( clpath(LEN_TRIM(clpath):) /= '/' ) clpath = TRIM(clpath) // '/' |
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| 198 | CALL iom_open( TRIM(clpath)//cn_ocerst_in, numror, kiolib = jlibalt ) |
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[4292] | 199 | ENDIF |
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| 200 | END SUBROUTINE rst_read_open |
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| 201 | |
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[5836] | 202 | |
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[3] | 203 | SUBROUTINE rst_read |
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| 204 | !!---------------------------------------------------------------------- |
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| 205 | !! *** ROUTINE rst_read *** |
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| 206 | !! |
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[632] | 207 | !! ** Purpose : Read files for restart (format fixed by jprstlib ) |
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[3] | 208 | !! |
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[1531] | 209 | !! ** Method : Read in restart.nc file fields which are necessary for restart |
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[3] | 210 | !!---------------------------------------------------------------------- |
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[6140] | 211 | REAL(wp) :: zrdt |
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[4292] | 212 | INTEGER :: jk |
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[3] | 213 | !!---------------------------------------------------------------------- |
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| 214 | |
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[4292] | 215 | CALL rst_read_open ! open restart for reading (if not already opened) |
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[3] | 216 | |
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[544] | 217 | ! Check dynamics and tracer time-step consistency and force Euler restart if changed |
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[746] | 218 | IF( iom_varid( numror, 'rdt', ldstop = .FALSE. ) > 0 ) THEN |
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[544] | 219 | CALL iom_get( numror, 'rdt', zrdt ) |
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| 220 | IF( zrdt /= rdt ) neuler = 0 |
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| 221 | ENDIF |
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[6140] | 222 | |
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| 223 | ! Diurnal DSST |
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| 224 | IF( ln_diurnal ) CALL iom_get( numror, jpdom_autoglo, 'Dsst' , x_dsst ) |
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| 225 | IF ( ln_diurnal_only ) THEN |
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| 226 | IF(lwp) WRITE( numout, * ) & |
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| 227 | & "rst_read:- ln_diurnal_only set, setting rhop=rau0" |
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| 228 | rhop = rau0 |
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| 229 | CALL iom_get( numror, jpdom_autoglo, 'tn' , tsn(:,:,1,jp_tem) ) |
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| 230 | RETURN |
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| 231 | ENDIF |
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| 232 | |
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[3680] | 233 | IF( iom_varid( numror, 'ub', ldstop = .FALSE. ) > 0 ) THEN |
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| 234 | CALL iom_get( numror, jpdom_autoglo, 'ub' , ub ) ! before fields |
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| 235 | CALL iom_get( numror, jpdom_autoglo, 'vb' , vb ) |
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| 236 | CALL iom_get( numror, jpdom_autoglo, 'tb' , tsb(:,:,:,jp_tem) ) |
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| 237 | CALL iom_get( numror, jpdom_autoglo, 'sb' , tsb(:,:,:,jp_sal) ) |
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| 238 | CALL iom_get( numror, jpdom_autoglo, 'sshb' , sshb ) |
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| 239 | ELSE |
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| 240 | neuler = 0 |
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| 241 | ENDIF |
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| 242 | ! |
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| 243 | CALL iom_get( numror, jpdom_autoglo, 'un' , un ) ! now fields |
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| 244 | CALL iom_get( numror, jpdom_autoglo, 'vn' , vn ) |
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| 245 | CALL iom_get( numror, jpdom_autoglo, 'tn' , tsn(:,:,:,jp_tem) ) |
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| 246 | CALL iom_get( numror, jpdom_autoglo, 'sn' , tsn(:,:,:,jp_sal) ) |
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| 247 | CALL iom_get( numror, jpdom_autoglo, 'sshn' , sshn ) |
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| 248 | IF( iom_varid( numror, 'rhop', ldstop = .FALSE. ) > 0 ) THEN |
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| 249 | CALL iom_get( numror, jpdom_autoglo, 'rhop' , rhop ) ! now potential density |
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| 250 | ELSE |
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[6140] | 251 | CALL eos( tsn, rhd, rhop, gdept_n(:,:,:) ) |
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[3680] | 252 | ENDIF |
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[2528] | 253 | ! |
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[508] | 254 | IF( neuler == 0 ) THEN ! Euler restart (neuler=0) |
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[3294] | 255 | tsb (:,:,:,:) = tsn (:,:,:,:) ! all before fields set to now values |
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| 256 | ub (:,:,:) = un (:,:,:) |
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| 257 | vb (:,:,:) = vn (:,:,:) |
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| 258 | sshb (:,:) = sshn (:,:) |
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[5836] | 259 | ! |
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[6140] | 260 | IF( .NOT.ln_linssh ) THEN |
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[4689] | 261 | DO jk = 1, jpk |
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[6140] | 262 | e3t_b(:,:,jk) = e3t_n(:,:,jk) |
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[4689] | 263 | END DO |
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| 264 | ENDIF |
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[5836] | 265 | ! |
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[3] | 266 | ENDIF |
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[508] | 267 | ! |
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| 268 | END SUBROUTINE rst_read |
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[473] | 269 | |
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[3] | 270 | !!===================================================================== |
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| 271 | END MODULE restart |
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