[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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[508] | 11 | !!---------------------------------------------------------------------- |
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[3] | 12 | |
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| 13 | !!---------------------------------------------------------------------- |
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[508] | 14 | !! rst_opn : open the ocean restart file |
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| 15 | !! rst_write : write the ocean restart file |
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| 16 | !! rst_read : read the ocean restart file |
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[3] | 17 | !!---------------------------------------------------------------------- |
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[2528] | 18 | USE oce ! ocean dynamics and tracers |
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[3] | 19 | USE dom_oce ! ocean space and time domain |
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| 20 | USE phycst ! physical constants |
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[508] | 21 | USE in_out_manager ! I/O manager |
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| 22 | USE iom ! I/O module |
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[544] | 23 | USE eosbn2 ! equation of state (eos bn2 routine) |
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[579] | 24 | USE trdmld_oce ! ocean active mixed layer tracers trends variables |
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[2528] | 25 | USE domvvl ! variable volume |
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[3] | 26 | |
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| 27 | IMPLICIT NONE |
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| 28 | PRIVATE |
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| 29 | |
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[508] | 30 | PUBLIC rst_opn ! routine called by step module |
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| 31 | PUBLIC rst_write ! routine called by step module |
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| 32 | PUBLIC rst_read ! routine called by opa module |
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[3] | 33 | |
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[2528] | 34 | LOGICAL, PUBLIC :: lrst_oce = .FALSE. !: logical to control the oce restart write |
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| 35 | INTEGER, PUBLIC :: numror, numrow !: logical unit for cean restart (read and write) |
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[508] | 36 | |
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| 37 | !! * Substitutions |
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[2528] | 38 | # include "domzgr_substitute.h90" |
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[508] | 39 | # include "vectopt_loop_substitute.h90" |
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[3] | 40 | !!---------------------------------------------------------------------- |
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[2528] | 41 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[888] | 42 | !! $Id$ |
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[2528] | 43 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[359] | 44 | !!---------------------------------------------------------------------- |
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[3] | 45 | CONTAINS |
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| 46 | |
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[508] | 47 | SUBROUTINE rst_opn( kt ) |
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| 48 | !!--------------------------------------------------------------------- |
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| 49 | !! *** ROUTINE rst_opn *** |
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| 50 | !! |
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| 51 | !! ** Purpose : + initialization (should be read in the namelist) of nitrst |
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| 52 | !! + open the restart when we are one time step before nitrst |
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| 53 | !! - restart header is defined when kt = nitrst-1 |
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| 54 | !! - restart data are written when kt = nitrst |
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| 55 | !! + define lrst_oce to .TRUE. when we need to define or write the restart |
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| 56 | !!---------------------------------------------------------------------- |
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| 57 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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| 58 | !! |
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| 59 | CHARACTER(LEN=20) :: clkt ! ocean time-step deine as a character |
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| 60 | CHARACTER(LEN=50) :: clname ! ice output restart file name |
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| 61 | !!---------------------------------------------------------------------- |
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| 62 | ! |
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[783] | 63 | IF( kt == nit000 ) THEN ! default definitions |
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| 64 | lrst_oce = .FALSE. |
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| 65 | nitrst = nitend |
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[508] | 66 | ENDIF |
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[783] | 67 | IF( MOD( kt - 1, nstock ) == 0 ) THEN |
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| 68 | ! we use kt - 1 and not kt - nit000 to keep the same periodicity from the beginning of the experiment |
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| 69 | nitrst = kt + nstock - 1 ! define the next value of nitrst for restart writing |
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| 70 | IF( nitrst > nitend ) nitrst = nitend ! make sure we write a restart at the end of the run |
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| 71 | ENDIF |
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| 72 | ! to get better performances with NetCDF format: |
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| 73 | ! we open and define the ocean restart file one time step before writing the data (-> at nitrst - 1) |
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| 74 | ! 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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| 75 | IF( kt == nitrst - 1 .OR. nstock == 1 .OR. ( kt == nitend .AND. .NOT. lrst_oce ) ) THEN |
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| 76 | ! beware of the format used to write kt (default is i8.8, that should be large enough...) |
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| 77 | IF( nitrst > 999999999 ) THEN ; WRITE(clkt, * ) nitrst |
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| 78 | ELSE ; WRITE(clkt, '(i8.8)') nitrst |
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[508] | 79 | ENDIF |
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| 80 | ! create the file |
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[1229] | 81 | clname = TRIM(cexper)//"_"//TRIM(ADJUSTL(clkt))//"_"//TRIM(cn_ocerst_out) |
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[611] | 82 | IF(lwp) THEN |
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| 83 | WRITE(numout,*) |
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[632] | 84 | SELECT CASE ( jprstlib ) |
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[783] | 85 | CASE ( jprstdimg ) ; WRITE(numout,*) ' open ocean restart binary file: '//clname |
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| 86 | CASE DEFAULT ; WRITE(numout,*) ' open ocean restart NetCDF file: '//clname |
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[632] | 87 | END SELECT |
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[2528] | 88 | IF ( snc4set%luse ) WRITE(numout,*) ' opened for NetCDF4 chunking and compression' |
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[1130] | 89 | IF( kt == nitrst - 1 ) THEN ; WRITE(numout,*) ' kt = nitrst - 1 = ', kt |
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| 90 | ELSE ; WRITE(numout,*) ' kt = ' , kt |
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[611] | 91 | ENDIF |
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| 92 | ENDIF |
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[2528] | 93 | ! |
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[547] | 94 | CALL iom_open( clname, numrow, ldwrt = .TRUE., kiolib = jprstlib ) |
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[508] | 95 | lrst_oce = .TRUE. |
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| 96 | ENDIF |
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| 97 | ! |
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| 98 | END SUBROUTINE rst_opn |
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| 99 | |
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| 100 | |
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[3] | 101 | SUBROUTINE rst_write( kt ) |
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| 102 | !!--------------------------------------------------------------------- |
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| 103 | !! *** ROUTINE rstwrite *** |
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| 104 | !! |
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[632] | 105 | !! ** Purpose : Write restart fields in the format corresponding to jprstlib |
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[3] | 106 | !! |
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[508] | 107 | !! ** Method : Write in numrow when kt == nitrst in NetCDF |
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[2528] | 108 | !! file, save fields which are necessary for restart |
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[3] | 109 | !!---------------------------------------------------------------------- |
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[508] | 110 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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[3] | 111 | !!---------------------------------------------------------------------- |
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[1239] | 112 | |
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[2528] | 113 | CALL iom_rstput( kt, nitrst, numrow, 'rdt' , rdt ) ! dynamics time step |
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| 114 | CALL iom_rstput( kt, nitrst, numrow, 'rdttra1', rdttra(1) ) ! surface tracer time step |
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[3] | 115 | |
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[2528] | 116 | CALL iom_rstput( kt, nitrst, numrow, 'ub' , ub ) ! before fields |
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| 117 | CALL iom_rstput( kt, nitrst, numrow, 'vb' , vb ) |
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[2789] | 118 | CALL iom_rstput( kt, nitrst, numrow, 'tb' , tsb(:,:,:,jp_tem) ) |
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| 119 | CALL iom_rstput( kt, nitrst, numrow, 'sb' , tsb(:,:,:,jp_sal) ) |
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[2528] | 120 | CALL iom_rstput( kt, nitrst, numrow, 'rotb' , rotb ) |
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| 121 | CALL iom_rstput( kt, nitrst, numrow, 'hdivb' , hdivb ) |
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| 122 | CALL iom_rstput( kt, nitrst, numrow, 'sshb' , sshb ) |
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| 123 | IF( lk_vvl ) CALL iom_rstput( kt, nitrst, numrow, 'fse3t_b', fse3t_b(:,:,:) ) |
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| 124 | ! |
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| 125 | CALL iom_rstput( kt, nitrst, numrow, 'un' , un ) ! now fields |
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| 126 | CALL iom_rstput( kt, nitrst, numrow, 'vn' , vn ) |
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[2789] | 127 | CALL iom_rstput( kt, nitrst, numrow, 'tn' , tsn(:,:,:,jp_tem) ) |
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| 128 | CALL iom_rstput( kt, nitrst, numrow, 'sn' , tsn(:,:,:,jp_sal) ) |
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[2528] | 129 | CALL iom_rstput( kt, nitrst, numrow, 'rotn' , rotn ) |
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| 130 | CALL iom_rstput( kt, nitrst, numrow, 'hdivn' , hdivn ) |
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| 131 | CALL iom_rstput( kt, nitrst, numrow, 'sshn' , sshn ) |
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| 132 | CALL iom_rstput( kt, nitrst, numrow, 'rhop' , rhop ) |
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[1545] | 133 | #if defined key_zdfkpp |
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[2528] | 134 | CALL iom_rstput( kt, nitrst, numrow, 'rhd' , rhd ) |
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[1483] | 135 | #endif |
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[508] | 136 | IF( kt == nitrst ) THEN |
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| 137 | CALL iom_close( numrow ) ! close the restart file (only at last time step) |
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[579] | 138 | IF( .NOT. lk_trdmld ) lrst_oce = .FALSE. |
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[3] | 139 | ENDIF |
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[508] | 140 | ! |
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[3] | 141 | END SUBROUTINE rst_write |
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| 142 | |
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| 143 | |
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| 144 | SUBROUTINE rst_read |
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| 145 | !!---------------------------------------------------------------------- |
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| 146 | !! *** ROUTINE rst_read *** |
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| 147 | !! |
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[632] | 148 | !! ** Purpose : Read files for restart (format fixed by jprstlib ) |
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[3] | 149 | !! |
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[1531] | 150 | !! ** Method : Read in restart.nc file fields which are necessary for restart |
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[3] | 151 | !!---------------------------------------------------------------------- |
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[1130] | 152 | REAL(wp) :: zrdt, zrdttra1 |
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[2528] | 153 | INTEGER :: jk, jlibalt = jprstlib |
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[1473] | 154 | LOGICAL :: llok |
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[3] | 155 | !!---------------------------------------------------------------------- |
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| 156 | |
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[508] | 157 | IF(lwp) THEN ! Contol prints |
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| 158 | WRITE(numout,*) |
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[632] | 159 | SELECT CASE ( jprstlib ) |
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[1130] | 160 | CASE ( jpnf90 ) ; WRITE(numout,*) 'rst_read : read oce NetCDF restart file' |
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| 161 | CASE ( jprstdimg ) ; WRITE(numout,*) 'rst_read : read oce binary restart file' |
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[632] | 162 | END SELECT |
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[2528] | 163 | IF ( snc4set%luse ) WRITE(numout,*) 'rst_read : configured with NetCDF4 support' |
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[508] | 164 | WRITE(numout,*) '~~~~~~~~' |
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[3] | 165 | ENDIF |
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| 166 | |
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[1473] | 167 | IF ( jprstlib == jprstdimg ) THEN |
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| 168 | ! eventually read netcdf file (monobloc) for restarting on different number of processors |
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| 169 | ! if {cn_ocerst_in}.nc exists, then set jlibalt to jpnf90 |
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| 170 | INQUIRE( FILE = TRIM(cn_ocerst_in)//'.nc', EXIST = llok ) |
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| 171 | IF ( llok ) THEN ; jlibalt = jpnf90 ; ELSE ; jlibalt = jprstlib ; ENDIF |
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| 172 | ENDIF |
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| 173 | CALL iom_open( cn_ocerst_in, numror, kiolib = jlibalt ) |
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[3] | 174 | |
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[544] | 175 | ! Check dynamics and tracer time-step consistency and force Euler restart if changed |
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[746] | 176 | IF( iom_varid( numror, 'rdt', ldstop = .FALSE. ) > 0 ) THEN |
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[544] | 177 | CALL iom_get( numror, 'rdt', zrdt ) |
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| 178 | IF( zrdt /= rdt ) neuler = 0 |
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| 179 | ENDIF |
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[746] | 180 | IF( iom_varid( numror, 'rdttra1', ldstop = .FALSE. ) > 0 ) THEN |
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[544] | 181 | CALL iom_get( numror, 'rdttra1', zrdttra1 ) |
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| 182 | IF( zrdttra1 /= rdttra(1) ) neuler = 0 |
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| 183 | ENDIF |
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[1607] | 184 | ! |
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[2528] | 185 | CALL iom_get( numror, jpdom_autoglo, 'ub' , ub ) ! before fields |
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| 186 | CALL iom_get( numror, jpdom_autoglo, 'vb' , vb ) |
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[2789] | 187 | CALL iom_get( numror, jpdom_autoglo, 'tb' , tsb(:,:,:,jp_tem) ) |
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| 188 | CALL iom_get( numror, jpdom_autoglo, 'sb' , tsb(:,:,:,jp_sal) ) |
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[2528] | 189 | CALL iom_get( numror, jpdom_autoglo, 'rotb' , rotb ) |
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| 190 | CALL iom_get( numror, jpdom_autoglo, 'hdivb' , hdivb ) |
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| 191 | CALL iom_get( numror, jpdom_autoglo, 'sshb' , sshb ) |
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| 192 | IF( lk_vvl ) CALL iom_get( numror, jpdom_autoglo, 'fse3t_b', fse3t_b(:,:,:) ) |
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| 193 | ! |
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| 194 | CALL iom_get( numror, jpdom_autoglo, 'un' , un ) ! now fields |
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| 195 | CALL iom_get( numror, jpdom_autoglo, 'vn' , vn ) |
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[2789] | 196 | CALL iom_get( numror, jpdom_autoglo, 'tn' , tsn(:,:,:,jp_tem) ) |
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| 197 | CALL iom_get( numror, jpdom_autoglo, 'sn' , tsn(:,:,:,jp_sal) ) |
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[2528] | 198 | CALL iom_get( numror, jpdom_autoglo, 'rotn' , rotn ) |
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| 199 | CALL iom_get( numror, jpdom_autoglo, 'hdivn' , hdivn ) |
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| 200 | CALL iom_get( numror, jpdom_autoglo, 'sshn' , sshn ) |
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| 201 | CALL iom_get( numror, jpdom_autoglo, 'rhop' , rhop ) ! now potential density |
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[1545] | 202 | #if defined key_zdfkpp |
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| 203 | IF( iom_varid( numror, 'rhd', ldstop = .FALSE. ) > 0 ) THEN |
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[2528] | 204 | CALL iom_get( numror, jpdom_autoglo, 'rhd' , rhd ) ! now in situ density anomaly |
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[1545] | 205 | ELSE |
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[2528] | 206 | CALL eos( tsn, rhd ) ! compute rhd |
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[1545] | 207 | ENDIF |
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[1483] | 208 | #endif |
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[2528] | 209 | ! |
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[508] | 210 | IF( neuler == 0 ) THEN ! Euler restart (neuler=0) |
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[2789] | 211 | tsb (:,:,:,:) = tsn (:,:,:,:) ! all before fields set to now values |
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| 212 | ub (:,:,:) = un (:,:,:) |
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| 213 | vb (:,:,:) = vn (:,:,:) |
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| 214 | rotb (:,:,:) = rotn (:,:,:) |
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| 215 | hdivb(:,:,:) = hdivn(:,:,:) |
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| 216 | sshb (:,:) = sshn (:,:) |
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[2528] | 217 | IF( lk_vvl ) THEN |
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| 218 | DO jk = 1, jpk |
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| 219 | fse3t_b(:,:,jk) = fse3t_n(:,:,jk) |
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| 220 | END DO |
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| 221 | ENDIF |
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[3] | 222 | ENDIF |
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[508] | 223 | ! |
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| 224 | END SUBROUTINE rst_read |
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[473] | 225 | |
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[3] | 226 | !!===================================================================== |
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| 227 | END MODULE restart |
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