1 | MODULE usrdef_sbc |
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2 | !!====================================================================== |
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3 | !! *** MODULE usrdef_sbc *** |
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4 | !! |
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5 | !! === SAS_BIPER configuration === |
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6 | !! |
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7 | !! User defined : surface forcing of a user configuration |
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8 | !!====================================================================== |
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9 | !! History : 4.0 ! 2016-03 (S. Flavoni, G. Madec) user defined interface |
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10 | !!---------------------------------------------------------------------- |
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11 | |
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12 | !!---------------------------------------------------------------------- |
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13 | !! usr_def_sbc : user defined surface bounday conditions in SAS_BIPER case |
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14 | !!---------------------------------------------------------------------- |
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15 | USE oce ! ocean dynamics and tracers |
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16 | USE dom_oce ! ocean space and time domain |
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17 | USE sbc_oce ! Surface boundary condition: ocean fields |
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18 | USE sbc_ice ! Surface boundary condition: ice fields |
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19 | USE phycst ! physical constants |
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20 | USE ice, ONLY : pfrld, a_i_b |
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21 | USE limthd_dh ! for CALL lim_thd_snwblow |
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22 | ! |
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23 | USE in_out_manager ! I/O manager |
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24 | USE lib_mpp ! distribued memory computing library |
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25 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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26 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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27 | USE wrk_nemo |
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28 | |
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29 | IMPLICIT NONE |
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30 | PRIVATE |
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31 | |
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32 | PUBLIC usrdef_sbc_oce ! routine called by sbcmod.F90 for sbc ocean |
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33 | PUBLIC usrdef_sbc_ice_tau ! routine called by sbcice_lim.F90 for ice dynamics |
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34 | PUBLIC usrdef_sbc_ice_flx ! routine called by sbcice_lim.F90 for ice thermo |
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35 | |
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36 | !! * Substitutions |
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37 | # include "vectopt_loop_substitute.h90" |
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38 | !!---------------------------------------------------------------------- |
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39 | !! NEMO/OPA 4.0 , NEMO Consortium (2016) |
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40 | !! $Id$ |
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41 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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42 | !!---------------------------------------------------------------------- |
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43 | CONTAINS |
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44 | |
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45 | SUBROUTINE usrdef_sbc_oce( kt ) |
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46 | !!--------------------------------------------------------------------- |
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47 | !! *** ROUTINE usr_def_sbc *** |
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48 | !! |
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49 | !! ** Purpose : provide at each time-step the surface boundary |
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50 | !! condition, i.e. the momentum, heat and freshwater fluxes. |
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51 | !! |
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52 | !! ** Method : all 0 fields, for SAS_BIPER case |
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53 | !! CAUTION : never mask the surface stress field ! |
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54 | !! |
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55 | !! ** Action : - set to ZERO all the ocean surface boundary condition, i.e. |
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56 | !! utau, vtau, taum, wndm, qns, qsr, emp, sfx |
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57 | !! |
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58 | !!---------------------------------------------------------------------- |
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59 | INTEGER, INTENT(in) :: kt ! ocean time step |
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60 | !!--------------------------------------------------------------------- |
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61 | ! |
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62 | IF( kt == nit000 ) THEN |
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63 | ! |
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64 | IF(lwp) WRITE(numout,*)' usrdef_sbc_oce : SAS_BIPER case: NO surface forcing' |
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65 | ! --- oce variables --- ! |
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66 | utau(:,:) = 0._wp |
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67 | vtau(:,:) = 0._wp |
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68 | taum(:,:) = 0._wp |
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69 | wndm(:,:) = 0._wp |
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70 | ! |
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71 | emp (:,:) = 0._wp |
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72 | sfx (:,:) = 0._wp |
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73 | qns (:,:) = 0._wp |
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74 | qsr (:,:) = 0._wp |
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75 | ! |
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76 | ENDIF |
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77 | ! |
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78 | END SUBROUTINE usrdef_sbc_oce |
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79 | |
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80 | SUBROUTINE usrdef_sbc_ice_tau( kt ) |
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81 | !!--------------------------------------------------------------------- |
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82 | !! *** ROUTINE usrdef_sbc_ice_tau *** |
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83 | !! |
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84 | !! ** Purpose : provide the surface boundary (momentum) condition over sea-ice |
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85 | !!--------------------------------------------------------------------- |
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86 | INTEGER, INTENT(in) :: kt ! ocean time step |
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87 | !!--------------------------------------------------------------------- |
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88 | IF( kt==nit000 .AND. lwp) WRITE(numout,*)' usrdef_sbc_ice : SAS_BIPER case: NO stress forcing' |
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89 | ! |
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90 | utau_ice(:,:) = 0._wp |
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91 | vtau_ice(:,:) = 0._wp |
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92 | ! |
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93 | END SUBROUTINE usrdef_sbc_ice_tau |
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94 | |
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95 | SUBROUTINE usrdef_sbc_ice_flx( kt ) |
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96 | !!--------------------------------------------------------------------- |
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97 | !! *** ROUTINE usrdef_sbc_ice_flx *** |
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98 | !! |
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99 | !! ** Purpose : provide the surface boundary (flux) condition over sea-ice |
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100 | !!--------------------------------------------------------------------- |
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101 | REAL(wp), DIMENSION(:,:), POINTER :: zsnw ! snw distribution after wind blowing |
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102 | INTEGER, INTENT(in) :: kt ! ocean time step |
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103 | !!--------------------------------------------------------------------- |
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104 | CALL wrk_alloc( jpi,jpj, zsnw ) |
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105 | ! |
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106 | IF( kt==nit000 .AND. lwp) WRITE(numout,*)' usrdef_sbc_ice : SAS_BIPER case: NO flux forcing' |
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107 | ! |
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108 | ! ocean variables (renaming) |
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109 | emp_oce (:,:) = 0._wp ! uniform value for freshwater budget (E-P) |
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110 | qsr_oce (:,:) = 0._wp ! uniform value for solar radiation |
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111 | qns_oce (:,:) = 0._wp ! uniform value for non-solar radiation |
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112 | |
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113 | ! ice variables |
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114 | alb_ice (:,:,:) = 0.7_wp ! useless |
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115 | qsr_ice (:,:,:) = 0._wp ! uniform value for solar radiation |
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116 | qns_ice (:,:,:) = 0._wp ! uniform value for non-solar radiation |
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117 | sprecip (:,:) = 0._wp ! uniform value for snow precip |
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118 | evap_ice(:,:,:) = 0._wp ! uniform value for sublimation |
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119 | |
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120 | ! ice fields deduced from above |
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121 | zsnw(:,:) = 1._wp |
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122 | !!CALL lim_thd_snwblow( pfrld, zsnw ) ! snow distribution over ice after wind blowing |
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123 | emp_ice (:,:) = SUM( a_i_b(:,:,:) * evap_ice(:,:,:), dim=3 ) - sprecip(:,:) * zsnw(:,:) |
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124 | emp_oce (:,:) = emp_oce(:,:) - sprecip(:,:) * (1._wp - zsnw(:,:) ) |
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125 | qevap_ice(:,:,:) = 0._wp |
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126 | qprec_ice(:,:) = rhosn * ( sst_m(:,:) * cpic - lfus ) * tmask(:,:,1) ! in J/m3 |
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127 | qemp_oce (:,:) = - emp_oce(:,:) * sst_m(:,:) * rcp |
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128 | qemp_ice (:,:) = sprecip(:,:) * zsnw * ( sst_m(:,:) * cpic - lfus ) * tmask(:,:,1) ! solid precip (only) |
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129 | |
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130 | ! total fluxes |
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131 | emp_tot (:,:) = emp_ice + emp_oce |
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132 | qns_tot (:,:) = pfrld(:,:) * qns_oce(:,:) + SUM( a_i_b(:,:,:) * qns_ice(:,:,:), dim=3 ) + qemp_ice(:,:) + qemp_oce(:,:) |
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133 | qsr_tot (:,:) = pfrld(:,:) * qsr_oce(:,:) + SUM( a_i_b(:,:,:) * qsr_ice(:,:,:), dim=3 ) |
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134 | |
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135 | !-------------------------------------------------------------------- |
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136 | ! FRACTIONs of net shortwave radiation which is not absorbed in the |
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137 | ! thin surface layer and penetrates inside the ice cover |
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138 | ! ( Maykut and Untersteiner, 1971 ; Ebert and Curry, 1993 ) |
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139 | fr1_i0(:,:) = ( 0.18 * ( 1.0 - cldf_ice ) + 0.35 * cldf_ice ) |
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140 | fr2_i0(:,:) = ( 0.82 * ( 1.0 - cldf_ice ) + 0.65 * cldf_ice ) |
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141 | |
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142 | CALL wrk_dealloc( jpi,jpj, zsnw ) |
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143 | |
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144 | END SUBROUTINE usrdef_sbc_ice_flx |
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145 | |
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146 | |
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147 | !!====================================================================== |
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148 | END MODULE usrdef_sbc |
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