[8586] | 1 | MODULE icerst |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE icerst *** |
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| 4 | !! sea-ice : write/read the ice restart file |
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| 5 | !!====================================================================== |
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[9604] | 6 | !! History: 4.0 ! 2018 (many people) SI3 [aka Sea Ice cube] |
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[8586] | 7 | !!---------------------------------------------------------------------- |
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[9570] | 8 | #if defined key_si3 |
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[8586] | 9 | !!---------------------------------------------------------------------- |
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[9570] | 10 | !! 'key_si3' SI3 sea-ice model |
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[8586] | 11 | !!---------------------------------------------------------------------- |
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| 12 | !! ice_rst_opn : open restart file |
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| 13 | !! ice_rst_write : write restart file |
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| 14 | !! ice_rst_read : read restart file |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | USE ice ! sea-ice variables |
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| 17 | USE dom_oce ! ocean domain |
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[8948] | 18 | USE sbc_oce , ONLY : nn_fsbc, ln_cpl |
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[8586] | 19 | USE icectl |
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| 20 | ! |
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| 21 | USE in_out_manager ! I/O manager |
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| 22 | USE iom ! I/O manager library |
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| 23 | USE lib_mpp ! MPP library |
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| 24 | USE lib_fortran ! fortran utilities (glob_sum + no signed zero) |
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| 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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| 29 | PUBLIC ice_rst_opn ! called by icestp |
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| 30 | PUBLIC ice_rst_write ! called by icestp |
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| 31 | PUBLIC ice_rst_read ! called by ice_init |
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| 32 | |
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| 33 | !!---------------------------------------------------------------------- |
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[9598] | 34 | !! NEMO/ICE 4.0 , NEMO Consortium (2018) |
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[9950] | 35 | !! $Id$ |
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[9598] | 36 | !! Software governed by the CeCILL licence (./LICENSE) |
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[8586] | 37 | !!---------------------------------------------------------------------- |
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| 38 | CONTAINS |
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| 39 | |
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| 40 | SUBROUTINE ice_rst_opn( kt ) |
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| 41 | !!---------------------------------------------------------------------- |
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| 42 | !! *** ice_rst_opn *** |
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| 43 | !! |
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| 44 | !! ** purpose : open restart file |
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| 45 | !!---------------------------------------------------------------------- |
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| 46 | INTEGER, INTENT(in) :: kt ! number of iteration |
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| 47 | ! |
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| 48 | CHARACTER(len=20) :: clkt ! ocean time-step define as a character |
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| 49 | CHARACTER(len=50) :: clname ! ice output restart file name |
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| 50 | CHARACTER(len=256) :: clpath ! full path to ice output restart file |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | ! |
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| 53 | IF( kt == nit000 ) lrst_ice = .FALSE. ! default definition |
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| 54 | |
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| 55 | ! in order to get better performances with NetCDF format, we open and define the ice restart file |
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| 56 | ! one ice time step before writing the data (-> at nitrst - 2*nn_fsbc + 1), except if we write ice |
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| 57 | ! restart files every ice time step or if an ice restart file was writen at nitend - 2*nn_fsbc + 1 |
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| 58 | IF( kt == nitrst - 2*nn_fsbc + 1 .OR. nstock == nn_fsbc & |
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| 59 | & .OR. ( kt == nitend - nn_fsbc + 1 .AND. .NOT. lrst_ice ) ) THEN |
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| 60 | IF( nitrst <= nitend .AND. nitrst > 0 ) THEN |
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| 61 | ! beware of the format used to write kt (default is i8.8, that should be large enough...) |
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| 62 | IF( nitrst > 99999999 ) THEN ; WRITE(clkt, * ) nitrst |
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| 63 | ELSE ; WRITE(clkt, '(i8.8)') nitrst |
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| 64 | ENDIF |
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| 65 | ! create the file |
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| 66 | clname = TRIM(cexper)//"_"//TRIM(ADJUSTL(clkt))//"_"//TRIM(cn_icerst_out) |
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| 67 | clpath = TRIM(cn_icerst_outdir) |
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| 68 | IF( clpath(LEN_TRIM(clpath):) /= '/' ) clpath = TRIM(clpath)//'/' |
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| 69 | IF(lwp) THEN |
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| 70 | WRITE(numout,*) |
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| 71 | SELECT CASE ( jprstlib ) |
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| 72 | CASE DEFAULT |
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| 73 | WRITE(numout,*) ' open ice restart NetCDF file: ',TRIM(clpath)//clname |
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| 74 | END SELECT |
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| 75 | IF( kt == nitrst - 2*nn_fsbc + 1 ) THEN |
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| 76 | WRITE(numout,*) ' kt = nitrst - 2*nn_fsbc + 1 = ', kt,' date= ', ndastp |
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| 77 | ELSE |
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| 78 | WRITE(numout,*) ' kt = ' , kt,' date= ', ndastp |
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| 79 | ENDIF |
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| 80 | ENDIF |
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| 81 | ! |
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[8817] | 82 | CALL iom_open( TRIM(clpath)//TRIM(clname), numriw, ldwrt = .TRUE., kiolib = jprstlib, kdlev = jpl ) |
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[8586] | 83 | lrst_ice = .TRUE. |
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| 84 | ENDIF |
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| 85 | ENDIF |
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| 86 | ! |
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| 87 | IF( ln_icectl ) CALL ice_prt( kt, iiceprt, jiceprt, 1, ' - Beginning the time step - ' ) ! control print |
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[8817] | 88 | ! |
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[8586] | 89 | END SUBROUTINE ice_rst_opn |
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| 90 | |
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| 91 | |
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| 92 | SUBROUTINE ice_rst_write( kt ) |
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| 93 | !!---------------------------------------------------------------------- |
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| 94 | !! *** ice_rst_write *** |
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| 95 | !! |
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| 96 | !! ** purpose : write restart file |
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| 97 | !!---------------------------------------------------------------------- |
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| 98 | INTEGER, INTENT(in) :: kt ! number of iteration |
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| 99 | !! |
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| 100 | INTEGER :: jk ,jl ! dummy loop indices |
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| 101 | INTEGER :: iter |
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| 102 | CHARACTER(len=25) :: znam |
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| 103 | CHARACTER(len=2) :: zchar, zchar1 |
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[8817] | 104 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: z3d ! 3D workspace |
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[8586] | 105 | !!---------------------------------------------------------------------- |
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| 106 | |
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| 107 | iter = kt + nn_fsbc - 1 ! ice restarts are written at kt == nitrst - nn_fsbc + 1 |
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| 108 | |
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| 109 | IF( iter == nitrst ) THEN |
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| 110 | IF(lwp) WRITE(numout,*) |
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| 111 | IF(lwp) WRITE(numout,*) 'ice_rst_write : write ice restart file kt =', kt |
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| 112 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~' |
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| 113 | ENDIF |
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| 114 | |
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| 115 | ! Write in numriw (if iter == nitrst) |
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| 116 | ! ------------------ |
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| 117 | ! ! calendar control |
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| 118 | CALL iom_rstput( iter, nitrst, numriw, 'nn_fsbc', REAL( nn_fsbc, wp ) ) ! time-step |
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| 119 | CALL iom_rstput( iter, nitrst, numriw, 'kt_ice' , REAL( iter , wp ) ) ! date |
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| 120 | |
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[8817] | 121 | ! Prognostic variables |
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| 122 | CALL iom_rstput( iter, nitrst, numriw, 'v_i' , v_i ) |
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| 123 | CALL iom_rstput( iter, nitrst, numriw, 'v_s' , v_s ) |
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| 124 | CALL iom_rstput( iter, nitrst, numriw, 'sv_i', sv_i ) |
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| 125 | CALL iom_rstput( iter, nitrst, numriw, 'oa_i', oa_i ) |
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| 126 | CALL iom_rstput( iter, nitrst, numriw, 'a_i' , a_i ) |
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| 127 | CALL iom_rstput( iter, nitrst, numriw, 't_su', t_su ) |
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| 128 | ! Melt ponds |
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| 129 | CALL iom_rstput( iter, nitrst, numriw, 'a_ip', a_ip ) |
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| 130 | CALL iom_rstput( iter, nitrst, numriw, 'v_ip', v_ip ) |
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[9271] | 131 | ! Snow enthalpy |
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| 132 | DO jk = 1, nlay_s |
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| 133 | WRITE(zchar1,'(I2.2)') jk |
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| 134 | znam = 'e_s'//'_l'//zchar1 |
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| 135 | z3d(:,:,:) = e_s(:,:,jk,:) |
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| 136 | CALL iom_rstput( iter, nitrst, numriw, znam , z3d ) |
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| 137 | END DO |
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| 138 | ! Ice enthalpy |
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[8817] | 139 | DO jk = 1, nlay_i |
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| 140 | WRITE(zchar1,'(I2.2)') jk |
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[9123] | 141 | znam = 'e_i'//'_l'//zchar1 |
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[8817] | 142 | z3d(:,:,:) = e_i(:,:,jk,:) |
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| 143 | CALL iom_rstput( iter, nitrst, numriw, znam , z3d ) |
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[8586] | 144 | END DO |
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[8817] | 145 | ! ice velocity |
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[8586] | 146 | CALL iom_rstput( iter, nitrst, numriw, 'u_ice', u_ice ) ! u_ice |
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| 147 | CALL iom_rstput( iter, nitrst, numriw, 'v_ice', v_ice ) ! v_ice |
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[8948] | 148 | ! fields needed for Met Office (Jules) coupling |
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| 149 | IF( ln_cpl ) THEN |
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[8933] | 150 | CALL iom_rstput( iter, nitrst, numriw, 'cnd_ice', cnd_ice ) |
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| 151 | CALL iom_rstput( iter, nitrst, numriw, 't1_ice' , t1_ice ) |
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| 152 | ENDIF |
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| 153 | ! |
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| 154 | |
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[8586] | 155 | ! close restart file |
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| 156 | ! ------------------ |
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| 157 | IF( iter == nitrst ) THEN |
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| 158 | CALL iom_close( numriw ) |
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| 159 | lrst_ice = .FALSE. |
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| 160 | ENDIF |
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| 161 | ! |
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| 162 | END SUBROUTINE ice_rst_write |
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| 163 | |
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| 164 | |
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| 165 | SUBROUTINE ice_rst_read |
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| 166 | !!---------------------------------------------------------------------- |
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| 167 | !! *** ice_rst_read *** |
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| 168 | !! |
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| 169 | !! ** purpose : read restart file |
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| 170 | !!---------------------------------------------------------------------- |
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[8817] | 171 | INTEGER :: jk, jl |
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| 172 | LOGICAL :: llok |
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| 173 | INTEGER :: id1 ! local integer |
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| 174 | INTEGER :: jlibalt = jprstlib |
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[8586] | 175 | CHARACTER(len=25) :: znam |
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| 176 | CHARACTER(len=2) :: zchar, zchar1 |
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[8817] | 177 | REAL(wp) :: zfice, ziter |
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| 178 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: z3d ! 3D workspace |
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[8586] | 179 | !!---------------------------------------------------------------------- |
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| 180 | |
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| 181 | IF(lwp) THEN |
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| 182 | WRITE(numout,*) |
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| 183 | WRITE(numout,*) 'ice_rst_read: read ice NetCDF restart file' |
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| 184 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 185 | ENDIF |
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| 186 | |
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[8817] | 187 | CALL iom_open ( TRIM(cn_icerst_indir)//'/'//cn_icerst_in, numrir, kiolib = jprstlib, kdlev = jpl ) |
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[8586] | 188 | |
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| 189 | CALL iom_get( numrir, 'nn_fsbc', zfice ) |
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| 190 | CALL iom_get( numrir, 'kt_ice' , ziter ) |
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| 191 | IF(lwp) WRITE(numout,*) ' read ice restart file at time step : ', ziter |
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| 192 | IF(lwp) WRITE(numout,*) ' in any case we force it to nit000 - 1 : ', nit000 - 1 |
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| 193 | |
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| 194 | ! Control of date |
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| 195 | IF( ( nit000 - NINT(ziter) ) /= 1 .AND. ABS( nrstdt ) == 1 ) & |
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| 196 | & CALL ctl_stop( 'ice_rst_read ===>>>> : problem with nit000 in ice restart', & |
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| 197 | & ' verify the file or rerun with the value 0 for the', & |
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| 198 | & ' control of time parameter nrstdt' ) |
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| 199 | IF( NINT(zfice) /= nn_fsbc .AND. ABS( nrstdt ) == 1 ) & |
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| 200 | & CALL ctl_stop( 'ice_rst_read ===>>>> : problem with nn_fsbc in ice restart', & |
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| 201 | & ' verify the file or rerun with the value 0 for the', & |
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| 202 | & ' control of time parameter nrstdt' ) |
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| 203 | |
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| 204 | ! Prognostic variables |
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[8817] | 205 | CALL iom_get( numrir, jpdom_autoglo, 'v_i' , v_i ) |
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| 206 | CALL iom_get( numrir, jpdom_autoglo, 'v_s' , v_s ) |
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| 207 | CALL iom_get( numrir, jpdom_autoglo, 'sv_i', sv_i ) |
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| 208 | CALL iom_get( numrir, jpdom_autoglo, 'oa_i', oa_i ) |
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| 209 | CALL iom_get( numrir, jpdom_autoglo, 'a_i' , a_i ) |
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| 210 | CALL iom_get( numrir, jpdom_autoglo, 't_su', t_su ) |
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| 211 | ! Melt ponds |
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[9122] | 212 | id1 = iom_varid( numrir, 'a_ip' , ldstop = .FALSE. ) |
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[8637] | 213 | IF( id1 > 0 ) THEN ! fields exist (melt ponds) |
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[8817] | 214 | CALL iom_get( numrir, jpdom_autoglo, 'a_ip' , a_ip ) |
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| 215 | CALL iom_get( numrir, jpdom_autoglo, 'v_ip' , v_ip ) |
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[8637] | 216 | ELSE ! start from rest |
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[8817] | 217 | IF(lwp) WRITE(numout,*) ' ==>> previous run without melt ponds output then set it to zero' |
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[8637] | 218 | a_ip(:,:,:) = 0._wp |
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| 219 | v_ip(:,:,:) = 0._wp |
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[8586] | 220 | ENDIF |
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[9271] | 221 | ! Snow enthalpy |
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| 222 | DO jk = 1, nlay_s |
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[8817] | 223 | WRITE(zchar1,'(I2.2)') jk |
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[9271] | 224 | znam = 'e_s'//'_l'//zchar1 |
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| 225 | CALL iom_get( numrir, jpdom_autoglo, znam , z3d ) |
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| 226 | e_s(:,:,jk,:) = z3d(:,:,:) |
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| 227 | END DO |
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| 228 | ! Ice enthalpy |
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| 229 | DO jk = 1, nlay_i |
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| 230 | WRITE(zchar1,'(I2.2)') jk |
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[9123] | 231 | znam = 'e_i'//'_l'//zchar1 |
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[8817] | 232 | CALL iom_get( numrir, jpdom_autoglo, znam , z3d ) |
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| 233 | e_i(:,:,jk,:) = z3d(:,:,:) |
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[8586] | 234 | END DO |
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[8817] | 235 | ! ice velocity |
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[8586] | 236 | CALL iom_get( numrir, jpdom_autoglo, 'u_ice', u_ice ) |
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| 237 | CALL iom_get( numrir, jpdom_autoglo, 'v_ice', v_ice ) |
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[8948] | 238 | ! fields needed for Met Office (Jules) coupling |
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| 239 | IF( ln_cpl ) THEN |
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[8933] | 240 | CALL iom_get( numrir, jpdom_autoglo, 'cnd_ice', cnd_ice ) |
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| 241 | CALL iom_get( numrir, jpdom_autoglo, 't1_ice' , t1_ice ) |
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| 242 | ENDIF |
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[8586] | 243 | |
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| 244 | END SUBROUTINE ice_rst_read |
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| 245 | |
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| 246 | #else |
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| 247 | !!---------------------------------------------------------------------- |
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[9570] | 248 | !! Default option : Empty module NO SI3 sea-ice model |
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[8586] | 249 | !!---------------------------------------------------------------------- |
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| 250 | #endif |
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| 251 | |
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| 252 | !!====================================================================== |
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| 253 | END MODULE icerst |
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