1 | MODULE isf |
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2 | !!====================================================================== |
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3 | !! *** MODULE sbcisf *** |
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4 | !! Surface module : compute iceshelf melt and heat flux |
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5 | !!====================================================================== |
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6 | !! History : 3.2 ! 2011-02 (C.Harris ) Original code isf cav |
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7 | !! X.X ! 2006-02 (C. Wang ) Original code bg03 |
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8 | !! 3.4 ! 2013-03 (P. Mathiot) Merging + parametrization |
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9 | !! 4.1 ! 2019-09 (P. Mathiot) Split param/explicit ice shelf and re-organisation |
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10 | !!---------------------------------------------------------------------- |
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11 | |
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12 | !!---------------------------------------------------------------------- |
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13 | !! isfmlt : compute iceshelf melt and heat flux |
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14 | !!---------------------------------------------------------------------- |
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15 | |
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16 | USE in_out_manager ! I/O manager |
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17 | USE lib_mpp ! MPP library |
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18 | USE fldread ! read input fields |
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19 | |
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20 | IMPLICIT NONE |
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21 | |
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22 | PRIVATE |
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23 | |
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24 | PUBLIC isf_alloc, isf_alloc_par, isf_alloc_cav |
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25 | |
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26 | ! public in order to be able to output then |
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27 | |
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28 | LOGICAL, PUBLIC :: ln_isfpar_mlt !: logical for the computation of melt inside the cavity |
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29 | LOGICAL, PUBLIC :: ln_isfcav_mlt !: logical for the use of ice shelf parametrisation |
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30 | REAL(wp), PUBLIC :: rn_hisf_tbl !: thickness of top boundary layer [m] |
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31 | REAL(wp), PUBLIC :: rn_gammat0 !: temperature exchange coeficient [] |
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32 | REAL(wp), PUBLIC :: rn_gammas0 !: salinity exchange coeficient [] |
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33 | REAL(wp), PUBLIC :: rn_htbl !: Losch top boundary layer thickness [m] |
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34 | CHARACTER(LEN=256), PUBLIC :: cn_gammablk !: gamma formulation |
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35 | CHARACTER(LEN=256), PUBLIC :: cn_isfcav_mlt, cn_isfpar_mlt !: melt formulation (cavity/param) |
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36 | TYPE(FLD_N), PUBLIC :: sn_isfcav_fwf !: information about the isf melting file to be read |
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37 | TYPE(FLD_N), PUBLIC :: sn_isfpar_fwf !: information about the isf melting file to be read |
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38 | TYPE(FLD_N), PUBLIC :: sn_isfpar_zmax !: information about the grounding line depth file to be read |
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39 | TYPE(FLD_N), PUBLIC :: sn_isfpar_zmin !: information about the calving line depth file to be read |
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40 | TYPE(FLD_N), PUBLIC :: sn_isfpar_Leff !: information about the effective length file to be read |
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41 | |
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42 | LOGICAL, PUBLIC :: l_isfcpl |
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43 | ! |
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44 | INTEGER , PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: misfkt_par, misfkt_cav !: Level of ice shelf base |
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45 | INTEGER , PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: misfkb_par, misfkb_cav !: Level of ice shelf base |
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46 | ! |
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47 | INTEGER , PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: mskisf_par, mskisf_cav !: Level of ice shelf base |
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48 | ! |
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49 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rhisf_tbl, rhisf_tbl_0 !: thickness of tbl [m] |
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50 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rhisf_tbl_cav, rhisf_tbl_par !: thickness of tbl [m] |
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51 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rfrac_tbl_cav, rfrac_tbl_par !: fraction of the deepest cell affect by isf tbl [] |
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52 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rhisf0_tbl_par |
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53 | ! |
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54 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: fwfisf_par, fwfisf_par_b !: net fwf from the ice shelf [kg/m2/s] |
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55 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: fwfisf_cav, fwfisf_cav_b !: net fwf from the ice shelf [kg/m2/s] |
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56 | ! |
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57 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: risfdep !: Iceshelf draft (ISF) |
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58 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: bathy !: Bathymetry (needed for isf tbl definition) (ISF) |
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59 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: risfLeff |
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60 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: risf_cav_tsc_b, risf_cav_tsc !: before and now T & S isf contents [K.m/s & PSU.m/s] |
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61 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: risf_par_tsc_b, risf_par_tsc !: before and now T & S isf contents [K.m/s & PSU.m/s] |
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62 | |
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63 | REAL(wp), PARAMETER, PUBLIC :: rLfusisf = 0.334e6_wp !: latent heat of fusion of ice shelf [J/kg] |
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64 | REAL(wp), PARAMETER, PUBLIC :: rcpisf = 2000.0_wp !: specific heat of ice shelf [J/kg/K] |
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65 | REAL(wp), PARAMETER, PUBLIC :: rkappa = 1.54e-6_wp !: heat diffusivity through the ice-shelf [m2/s] |
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66 | REAL(wp), PARAMETER, PUBLIC :: rhoisf = 920.0_wp !: volumic mass of ice shelf [kg/m3] |
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67 | REAL(wp), PARAMETER, PUBLIC :: rtsurf = -20.0 !: surface temperature [C] |
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68 | REAL(wp), PARAMETER, PUBLIC :: risf_eps = 1.e-20_wp |
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69 | |
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70 | REAL(wp), PUBLIC :: risf_lamb1, risf_lamb2, risf_lamb3 ! freezing point linearization coeficient |
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71 | |
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72 | REAL(wp), PUBLIC :: r1_Lfusisf !: 1/rLfusisf |
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73 | |
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74 | TYPE(FLD) , PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: sf_isfcav_fwf |
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75 | TYPE(FLD) , PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: sf_isfpar_fwf |
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76 | |
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77 | !: Variable used in fldread to read the forcing file (nn_isf == 4 .OR. nn_isf == 3) |
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78 | CHARACTER(len=100), PUBLIC :: cn_dirisf = './' !: Root directory for location of ssr files |
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79 | TYPE(FLD_N) , PUBLIC :: sn_fwfisf !: information about the isf melting file to be read |
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80 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_fwfisf |
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81 | TYPE(FLD_N) , PUBLIC :: sn_rnfisf !: information about the isf melting param. file to be read |
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82 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_rnfisf |
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83 | |
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84 | !!---------------------------------------------------------------------- |
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85 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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86 | !! $Id: sbcisf.F90 10536 2019-01-16 19:21:09Z mathiot $ |
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87 | !! Software governed by the CeCILL license (see ./LICENSE) |
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88 | !!---------------------------------------------------------------------- |
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89 | CONTAINS |
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90 | |
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91 | SUBROUTINE isf_alloc_par() |
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92 | !!--------------------------------------------------------------------- |
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93 | !! *** ROUTINE isfmlt_alloc *** |
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94 | !! |
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95 | !! ** Purpose : |
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96 | !! |
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97 | !! ** Method : |
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98 | !! |
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99 | !!---------------------------------------------------------------------- |
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100 | INTEGER :: ierr, ialloc |
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101 | !!---------------------------------------------------------------------- |
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102 | ierr = 0 ! set to zero if no array to be allocated |
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103 | ! |
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104 | ALLOCATE(risfLeff(jpi,jpj), STAT=ialloc) |
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105 | ierr = ierr + ialloc |
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106 | ! |
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107 | CALL mpp_sum ( 'isf', ierr ) |
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108 | IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'isf: failed to allocate arrays.' ) |
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109 | END SUBROUTINE isf_alloc_par |
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110 | |
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111 | SUBROUTINE isf_alloc_cav() |
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112 | !!--------------------------------------------------------------------- |
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113 | !! *** ROUTINE isfmlt_alloc *** |
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114 | !! |
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115 | !! ** Purpose : |
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116 | !! |
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117 | !! ** Method : |
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118 | !! |
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119 | !!---------------------------------------------------------------------- |
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120 | INTEGER :: ierr, ialloc |
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121 | !!---------------------------------------------------------------------- |
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122 | ierr = 0 ! set to zero if no array to be allocated |
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123 | ! |
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124 | CALL mpp_sum ( 'isf', ierr ) |
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125 | IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'isf: failed to allocate arrays.' ) |
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126 | END SUBROUTINE isf_alloc_cav |
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127 | |
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128 | SUBROUTINE isf_alloc() |
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129 | !!--------------------------------------------------------------------- |
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130 | !! *** ROUTINE isfmlt_alloc *** |
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131 | !! |
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132 | !! ** Purpose : |
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133 | !! |
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134 | !! ** Method : |
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135 | !! |
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136 | !!---------------------------------------------------------------------- |
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137 | INTEGER :: ierr, ialloc |
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138 | !!---------------------------------------------------------------------- |
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139 | ! |
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140 | ierr = 0 ! set to zero if no array to be allocated |
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141 | ! |
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142 | ALLOCATE(misfkt_par(jpi,jpj), misfkb_par(jpi,jpj), & |
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143 | & misfkt_cav(jpi,jpj), misfkb_cav(jpi,jpj), STAT=ialloc ) |
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144 | ierr = ierr + ialloc |
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145 | ! |
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146 | ALLOCATE(fwfisf_par(jpi,jpj), fwfisf_par_b(jpi,jpj), & |
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147 | & fwfisf_cav(jpi,jpj), fwfisf_cav_b(jpi,jpj), STAT=ialloc ) |
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148 | ierr = ierr + ialloc |
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149 | ! |
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150 | ALLOCATE(risf_cav_tsc(jpi,jpj,jpts), risf_cav_tsc_b(jpi,jpj,jpts), & |
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151 | & risf_par_tsc(jpi,jpj,jpts), risf_par_tsc_b(jpi,jpj,jpts), STAT=ialloc ) |
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152 | ierr = ierr + ialloc |
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153 | ! |
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154 | ALLOCATE( rfrac_tbl_cav(jpi,jpj), rfrac_tbl_par(jpi,jpj), STAT=ialloc) |
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155 | ierr = ierr + ialloc |
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156 | ! |
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157 | ALLOCATE( rhisf_tbl_par(jpi,jpj), rhisf_tbl_cav(jpi,jpj), STAT=ialloc) |
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158 | ierr = ierr + ialloc |
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159 | ! |
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160 | ALLOCATE( mskisf_cav(jpi,jpj), mskisf_par(jpi,jpj), STAT=ialloc) |
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161 | ierr = ierr + ialloc |
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162 | ! |
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163 | ALLOCATE(risfdep(jpi,jpj), bathy(jpi,jpj), STAT=ialloc) |
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164 | ierr = ierr + ialloc |
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165 | ! |
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166 | CALL mpp_sum ( 'isf', ierr ) |
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167 | IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'isf: failed to allocate arrays.' ) |
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168 | |
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169 | END SUBROUTINE isf_alloc |
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170 | ! |
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171 | END MODULE isf |
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