[11395] | 1 | MODULE isfpar |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE isfpar *** |
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| 4 | !! ice shelf module : update ocean boundary condition under ice |
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| 5 | !! shelf |
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| 6 | !!====================================================================== |
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| 7 | !! History : 3.2 ! 2011-02 (C.Harris ) Original code isf cav |
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| 8 | !! X.X ! 2006-02 (C. Wang ) Original code bg03 |
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| 9 | !! 3.4 ! 2013-03 (P. Mathiot) Merging + parametrization |
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| 10 | !! 4.0 ! 2019-09 (P. Mathiot) Restructuration |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! isf_par : compute ice shelf melt using a prametrisation of ice shelf cavities |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | USE oce ! ocean dynamics and tracers |
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| 17 | USE isf |
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| 18 | USE isfparmlt |
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| 19 | USE isftbl |
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| 20 | USE isfdiags |
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| 21 | USE isfutils |
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| 22 | USE dom_oce ! ocean space and time domain |
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| 23 | USE phycst ! physical constants |
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| 24 | USE eosbn2 ! equation of state |
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| 25 | ! |
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| 26 | USE in_out_manager ! I/O manager |
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| 27 | USE iom ! I/O library |
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| 28 | USE fldread ! read input field at current time step |
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| 29 | USE lbclnk ! |
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| 30 | |
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| 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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| 34 | PUBLIC isf_par, isf_par_init |
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| 35 | |
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| 36 | !!---------------------------------------------------------------------- |
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| 37 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 38 | !! $Id: sbcisf.F90 10536 2019-01-16 19:21:09Z mathiot $ |
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| 39 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 40 | !!---------------------------------------------------------------------- |
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| 41 | CONTAINS |
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| 42 | |
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| 43 | SUBROUTINE isf_par( kt, ptsc, pqfwf ) |
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| 44 | !!--------------------------------------------------------------------- |
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| 45 | !! *** ROUTINE sbc_isf_cav *** |
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| 46 | !! |
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| 47 | !! ** Purpose : |
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| 48 | !! |
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| 49 | !! ** Method : |
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| 50 | !! |
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| 51 | !! ** Action : |
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| 52 | !! |
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| 53 | !!--------------------------------------------------------------------- |
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| 54 | !!-------------------------- OUT -------------------------------------- |
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| 55 | REAL(wp), DIMENSION(jpi,jpj) , INTENT(inout) :: pqfwf |
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| 56 | REAL(wp), DIMENSION(jpi,jpj,jpts), INTENT(inout) :: ptsc |
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| 57 | !!-------------------------- IN -------------------------------------- |
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| 58 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 59 | !!--------------------------------------------------------------------- |
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| 60 | REAL(wp), DIMENSION(jpi,jpj) :: zqoce, zqhc, zqlat, zqh |
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| 61 | !!--------------------------------------------------------------------- |
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| 62 | ! |
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| 63 | ! compute misfkb_par, rhisf_tbl |
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| 64 | rhisf_tbl_par(:,:) = rhisf0_tbl_par(:,:) |
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| 65 | CALL isf_tbl_lvl( ht_n, e3t_n, misfkt_par, misfkb_par, rhisf_tbl_par, rfrac_tbl_par ) |
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| 66 | ! |
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| 67 | ! compute heat content, latent heat and melt fluxes (2d) |
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| 68 | CALL isfpar_mlt( kt, zqhc, zqoce, pqfwf ) |
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| 69 | ! |
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| 70 | ! compute heat and water flux (change signe directly in the melt subroutine) |
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| 71 | pqfwf(:,:) = pqfwf(:,:) * mskisf_par(:,:) |
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| 72 | zqoce(:,:) = zqoce(:,:) * mskisf_par(:,:) |
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| 73 | zqhc (:,:) = zqhc(:,:) * mskisf_par(:,:) |
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| 74 | ! |
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| 75 | ! compute heat content flux |
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| 76 | zqlat(:,:) = pqfwf(:,:) * rLfusisf ! 2d latent heat flux (W/m2) |
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| 77 | ! |
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| 78 | ! total heat flux |
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| 79 | zqh(:,:) = ( zqhc (:,:) + zqoce(:,:) ) |
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| 80 | ! |
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| 81 | ! lbclnk on melt |
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| 82 | CALL lbc_lnk_multi( 'isfmlt', zqh, 'T', 1., pqfwf, 'T', 1.) |
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| 83 | ! |
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| 84 | ! output fluxes |
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| 85 | CALL isf_diags_flx( misfkt_par, misfkb_par, rhisf_tbl_par, rfrac_tbl_par, 'par', pqfwf, zqoce, zqlat, zqhc) |
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| 86 | ! |
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| 87 | ! set temperature content |
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| 88 | ptsc(:,:,jp_tem) = zqh(:,:) * r1_rau0_rcp |
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| 89 | ! |
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| 90 | END SUBROUTINE isf_par |
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| 91 | |
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| 92 | SUBROUTINE isf_par_init |
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| 93 | !!--------------------------------------------------------------------- |
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| 94 | !! *** ROUTINE isf_par_init *** |
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| 95 | !! |
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| 96 | !! ** Purpose : |
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| 97 | !! |
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| 98 | !! ** Method : |
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| 99 | !!---------------------------------------------------------------------- |
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| 100 | INTEGER :: ierr |
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| 101 | REAL(wp), DIMENSION(jpi,jpj) :: ztblmax, ztblmin |
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| 102 | !!---------------------------------------------------------------------- |
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| 103 | ! |
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| 104 | ! allocation |
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| 105 | CALL isf_alloc_par() |
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| 106 | ! |
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[11403] | 107 | ! par |
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| 108 | misfkt_par(:,:) = 1 ; misfkb_par(:,:) = 1 |
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| 109 | rhisf_tbl_par(:,:) = 1e-20 ; rfrac_tbl_par(:,:) = 0.0_wp |
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| 110 | ! |
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| 111 | mskisf_par(:,:) = 0 |
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| 112 | ! |
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[11395] | 113 | ! define isf tbl tickness, top and bottom indice |
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| 114 | CALL read_2dcstdta(TRIM(sn_isfpar_zmax%clname), TRIM(sn_isfpar_zmax%clvar), ztblmax) |
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| 115 | CALL read_2dcstdta(TRIM(sn_isfpar_zmin%clname), TRIM(sn_isfpar_zmin%clvar), ztblmin) |
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| 116 | ! |
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| 117 | ! mask ice shelf parametrisation location |
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| 118 | ztblmax(:,:) = ztblmax(:,:) * ssmask(:,:) |
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| 119 | ztblmin(:,:) = ztblmin(:,:) * ssmask(:,:) |
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| 120 | ! |
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| 121 | ! if param used under an ice shelf overwrite ztblmax by the ice shelf draft |
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| 122 | WHERE ( risfdep > 0._wp ) |
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| 123 | ztblmin(:,:) = risfdep(:,:) |
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| 124 | END WHERE |
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| 125 | ! |
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| 126 | ! compute ktop |
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| 127 | CALL isftbl_ktop(ztblmin, misfkt_par) |
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| 128 | ! |
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| 129 | ! initial tbl thickness |
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| 130 | rhisf0_tbl_par(:,:) = ztblmax(:,:) - ztblmin(:,:) |
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| 131 | ! |
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| 132 | ! compute misfkb_par, rhisf_tbl |
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[11403] | 133 | rhisf_tbl_par(:,:) = rhisf0_tbl_par(:,:) |
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[11395] | 134 | CALL isf_tbl_lvl( ht_n, e3t_n, misfkt_par, misfkb_par, rhisf_tbl_par, rfrac_tbl_par ) |
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| 135 | ! |
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| 136 | ! define iceshelf parametrisation mask |
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| 137 | mskisf_par = 0 |
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| 138 | WHERE ( ztblmax > 0._wp ) |
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| 139 | mskisf_par(:,:) = 1._wp |
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| 140 | END WHERE |
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| 141 | ! |
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| 142 | SELECT CASE ( TRIM(cn_isfpar_mlt) ) |
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| 143 | ! |
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| 144 | CASE ( 'spe' ) |
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| 145 | |
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| 146 | ALLOCATE( sf_isfpar_fwf(1), STAT=ierr ) |
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| 147 | ALLOCATE( sf_isfpar_fwf(1)%fnow(jpi,jpj,1), sf_isfpar_fwf(1)%fdta(jpi,jpj,1,2) ) |
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| 148 | CALL fld_fill( sf_isfpar_fwf, (/ sn_isfpar_fwf /), cn_dirisf, 'isf_par_init', 'read fresh water flux isf data', 'namisf' ) |
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| 149 | |
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| 150 | IF(lwp) WRITE(numout,*) |
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| 151 | IF(lwp) WRITE(numout,*) ' ==>>> ice melt read from forcing field (cn_isfmlt_par = spe)' |
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| 152 | |
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| 153 | CASE ( 'bg03' ) |
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| 154 | ! |
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| 155 | IF(lwp) WRITE(numout,*) |
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| 156 | IF(lwp) WRITE(numout,*) ' ==>>> bg03 parametrisation (cn_isfmlt_par = bg03)' |
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| 157 | ! |
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| 158 | ! read effective length |
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| 159 | CALL read_2dcstdta(TRIM(sn_isfpar_Leff%clname), TRIM(sn_isfpar_Leff%clvar), risfLeff) |
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| 160 | risfLeff = risfLeff*1000.0_wp !: convertion in m |
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| 161 | ! |
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| 162 | CASE ( 'oasis' ) |
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| 163 | |
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| 164 | IF(lwp) WRITE(numout,*) |
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| 165 | IF(lwp) WRITE(numout,*) ' ==>>> isf melt provided by OASIS (cn_isfmlt_par = oasis)' |
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| 166 | |
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| 167 | CASE DEFAULT |
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| 168 | CALL ctl_stop( 'sbc_isf_init: wrong value of nn_isf' ) |
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| 169 | END SELECT |
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| 170 | ! |
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| 171 | END SUBROUTINE isf_par_init |
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| 172 | |
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| 173 | END MODULE isfpar |
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