1 | MODULE usrdef |
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2 | !!============================================================================== |
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3 | !! *** MODULE usrdef *** |
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4 | !! User defined module: used like example to define domain, init, sbc, ... |
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5 | !!============================================================================== |
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6 | !! History : NEMO ! 2016-03 (S. Flavoni) |
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7 | !!---------------------------------------------------------------------- |
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8 | |
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9 | !!---------------------------------------------------------------------- |
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10 | !! usr_def_hgr : initialize the horizontal mesh |
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11 | !! usr_def_ini : initial state |
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12 | !!---------------------------------------------------------------------- |
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13 | USE step_oce ! module used in the ocean time stepping module (step.F90) |
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14 | USE mppini ! shared/distributed memory setting (mpp_init routine) |
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15 | USE phycst ! physical constants |
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16 | IMPLICIT NONE |
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17 | PRIVATE |
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18 | |
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19 | |
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20 | PUBLIC usr_def_hgr |
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21 | PUBLIC usr_def_ini |
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22 | |
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23 | !!---------------------------------------------------------------------- |
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24 | !! NEMO/OPA 3.7 , NEMO Consortium (2014) |
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25 | !! $Id:$ |
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26 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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27 | !!---------------------------------------------------------------------- |
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28 | CONTAINS |
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29 | |
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30 | SUBROUTINE usr_def_hgr( kbench, k_cfg , kff , pff , & ! Coriolis parameter (if domain not on the sphere) |
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31 | & pglamt, pglamu, pglamv , pglamf, & ! gridpoints position (required) |
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32 | & pgphit, pgphiu, pgphiv , pgphif, & ! |
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33 | & pe1t , pe1u , pe1v , pe1f , & ! scale factors (required) |
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34 | & pe2t , pe2u , pe2v , pe2f , & ! |
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35 | & ke1e2u_v ) ! u- & v-surfaces (if gridsize reduction is used in strait(s)) |
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36 | !!---------------------------------------------------------------------- |
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37 | !! *** ROUTINE usr_def_hgr *** |
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38 | !! |
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39 | !! ** Purpose : user defined mesh and Coriolis parameter |
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40 | !! |
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41 | !! ** Method : set all intent(out) argument to a proper value |
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42 | !! |
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43 | !! Here GYRE configuration : |
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44 | !! Rectangular mid-latitude domain |
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45 | !! - with axes rotated by 45 degrees |
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46 | !! - a constant horizontal resolution of 106 km |
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47 | !! - on a beta-plane |
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48 | !! |
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49 | !! ** Action : - define longitude & latitude of t-, u-, v- and f-points (in degrees) |
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50 | !! - define coriolis parameter at f-point if the domain in not on the sphere (on beta-plane) |
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51 | !! - define i- & j-scale factors at t-, u-, v- and f-points (in meters) |
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52 | !! - define u- & v-surfaces (if gridsize reduction is used in some straits) (in m2) |
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53 | !!---------------------------------------------------------------------- |
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54 | INTEGER , INTENT(in ) :: kbench, k_cfg ! parameter of namelist for benchmark, and dimension of GYRE |
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55 | INTEGER , INTENT( out) :: kff ! =1 Coriolis parameter computed here, =0 otherwise |
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56 | REAL(wp), DIMENSION(:,:), INTENT( out) :: pff ! Coriolis factor at f-point [1/s] |
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57 | REAL(wp), DIMENSION(:,:), INTENT( out) :: pglamt, pglamu, pglamv, pglamf ! longitude outputs [degrees] |
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58 | REAL(wp), DIMENSION(:,:), INTENT( out) :: pgphit, pgphiu, pgphiv, pgphif ! latitude outputs [degrees] |
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59 | REAL(wp), DIMENSION(:,:), INTENT( out) :: pe1t, pe1u, pe1v, pe1f ! i-scale factors [m] |
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60 | REAL(wp), DIMENSION(:,:), INTENT( out) :: pe2t, pe2u, pe2v, pe2f ! j-scale factors [m] |
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61 | INTEGER , INTENT( out) :: ke1e2u_v ! =1 u- & v-surfaces read here, =0 otherwise |
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62 | !!------------------------------------------------------------------------------- |
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63 | INTEGER :: ji, jj ! dummy loop indices |
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64 | REAL(wp) :: zlam1, zlam0, zcos_alpha, zim1 , zjm1 , ze1 , ze1deg, zf0 ! local scalars |
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65 | REAL(wp) :: zphi1, zphi0, zsin_alpha, zim05, zjm05, zbeta, znorme ! local scalars |
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66 | !!------------------------------------------------------------------------------- |
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67 | ! |
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68 | IF( nn_timing == 1 ) CALL timing_start('usr_def_hgr') |
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69 | ! |
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70 | !== beta-plane with regular grid-spacing and rotated domain ==! (GYRE configuration) |
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71 | ! |
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72 | IF(lwp) WRITE(numout,*) |
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73 | IF(lwp) WRITE(numout,*) ' beta-plane with regular grid-spacing and rotated domain (GYRE configuration)' |
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74 | ! |
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75 | ! angle 45deg and ze1=106.e+3 / k_cfg forced -> zlam1 = -85deg, zphi1 = 29degN |
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76 | zlam1 = -85._wp |
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77 | zphi1 = 29._wp |
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78 | ! resolution in meters |
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79 | ze1 = 106000. / REAL( k_cfg , wp ) |
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80 | ! benchmark: forced the resolution to be about 100 km |
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81 | IF( kbench /= 0 ) ze1 = 106000._wp |
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82 | zsin_alpha = - SQRT( 2._wp ) * 0.5_wp |
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83 | zcos_alpha = SQRT( 2._wp ) * 0.5_wp |
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84 | ze1deg = ze1 / (ra * rad) |
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85 | IF( kbench /= 0 ) ze1deg = ze1deg / REAL( jp_cfg , wp ) ! benchmark: keep the lat/+lon |
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86 | ! ! at the right jp_cfg resolution |
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87 | zlam0 = zlam1 + zcos_alpha * ze1deg * REAL( jpjglo-2 , wp ) |
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88 | zphi0 = zphi1 + zsin_alpha * ze1deg * REAL( jpjglo-2 , wp ) |
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89 | ! |
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90 | IF( nprint==1 .AND. lwp ) THEN |
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91 | WRITE(numout,*) ' ze1', ze1, 'cosalpha', zcos_alpha, 'sinalpha', zsin_alpha |
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92 | WRITE(numout,*) ' ze1deg', ze1deg, 'zlam0', zlam0, 'zphi0', zphi0 |
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93 | ENDIF |
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94 | ! |
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95 | DO jj = 1, jpj |
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96 | DO ji = 1, jpi |
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97 | zim1 = REAL( ji + nimpp - 1 ) - 1. ; zim05 = REAL( ji + nimpp - 1 ) - 1.5 |
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98 | zjm1 = REAL( jj + njmpp - 1 ) - 1. ; zjm05 = REAL( jj + njmpp - 1 ) - 1.5 |
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99 | ! |
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100 | !glamt(i,j) longitude at T-point |
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101 | !gphit(i,j) latitude at T-point |
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102 | pglamt(ji,jj) = zlam0 + zim05 * ze1deg * zcos_alpha + zjm05 * ze1deg * zsin_alpha |
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103 | pgphit(ji,jj) = zphi0 - zim05 * ze1deg * zsin_alpha + zjm05 * ze1deg * zcos_alpha |
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104 | ! |
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105 | !glamu(i,j) longitude at U-point |
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106 | !gphiu(i,j) latitude at U-point |
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107 | pglamu(ji,jj) = zlam0 + zim1 * ze1deg * zcos_alpha + zjm05 * ze1deg * zsin_alpha |
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108 | pgphiu(ji,jj) = zphi0 - zim1 * ze1deg * zsin_alpha + zjm05 * ze1deg * zcos_alpha |
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109 | ! |
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110 | !glamv(i,j) longitude at V-point |
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111 | !gphiv(i,j) latitude at V-point |
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112 | pglamv(ji,jj) = zlam0 + zim05 * ze1deg * zcos_alpha + zjm1 * ze1deg * zsin_alpha |
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113 | pgphiv(ji,jj) = zphi0 - zim05 * ze1deg * zsin_alpha + zjm1 * ze1deg * zcos_alpha |
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114 | ! |
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115 | !glamf(i,j) longitude at F-point |
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116 | !gphif(i,j) latitude at F-point |
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117 | pglamf(ji,jj) = zlam0 + zim1 * ze1deg * zcos_alpha + zjm1 * ze1deg * zsin_alpha |
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118 | pgphif(ji,jj) = zphi0 - zim1 * ze1deg * zsin_alpha + zjm1 * ze1deg * zcos_alpha |
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119 | END DO |
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120 | END DO |
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121 | ! |
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122 | ! !== Horizontal scale factors ==! (in meters) |
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123 | ! |
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124 | ! ! constant grid spacing |
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125 | pe1t(:,:) = ze1 ; pe2t(:,:) = ze1 |
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126 | pe1u(:,:) = ze1 ; pe2u(:,:) = ze1 |
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127 | pe1v(:,:) = ze1 ; pe2v(:,:) = ze1 |
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128 | pe1f(:,:) = ze1 ; pe2f(:,:) = ze1 |
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129 | ! ! NO reduction of grid size in some straits |
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130 | ke1e2u_v = 0 ! ==>> u_ & v_surfaces will be computed in dom_ghr routine |
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131 | ! |
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132 | ! |
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133 | |
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134 | ! !== Coriolis parameter ==! |
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135 | kff = 1 ! indicate not to compute ff afterward |
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136 | ! |
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137 | zbeta = 2. * omega * COS( rad * zphi1 ) / ra ! beta at latitude zphi1 |
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138 | !SF we overwrite zphi0 (south point in latitude) used just above to define pgphif (value of zphi0=15.5190567531966) |
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139 | !SF for computation of coriolis we keep the parameter of Hazeleger, W., and S. S. Drijfhout, JPO 1998. |
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140 | zphi0 = 15._wp ! latitude of the most southern grid point |
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141 | zf0 = 2. * omega * SIN( rad * zphi0 ) ! compute f0 1st point south |
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142 | ! |
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143 | pff(:,:) = ( zf0 + zbeta * ABS( gphif(:,:) - zphi0 ) * rad * ra ) ! f = f0 +beta* y ( y=0 at south) |
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144 | ! |
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145 | IF(lwp) WRITE(numout,*) ' beta-plane used. beta = ', zbeta, ' 1/(s.m)' |
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146 | ! |
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147 | IF( nn_timing == 1 ) CALL timing_stop('usr_def_hgr') |
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148 | ! |
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149 | END SUBROUTINE usr_def_hgr |
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150 | |
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151 | |
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152 | SUBROUTINE usr_def_zgr() ! Coriolis parameter (if domain not on the sphere) |
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153 | ! subroutine for vertical grid |
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154 | END SUBROUTINE usr_def_zgr |
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155 | |
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156 | |
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157 | SUBROUTINE usr_def_ini( pts ) |
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158 | !!---------------------------------------------------------------------- |
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159 | !! *** ROUTINE usr_def_ini *** |
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160 | !! |
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161 | !! ** Purpose : Initialization of the dynamics and tracers |
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162 | !! Here GYRE configuration example : (double gyre with rotated domain) |
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163 | !! |
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164 | !! ** Method : - set temprature field |
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165 | !! - set salinity field |
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166 | !!---------------------------------------------------------------------- |
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167 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts), INTENT( out) :: pts ! T & S data |
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168 | ! |
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169 | INTEGER :: ji, jj, jk ! dummy loop indices |
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170 | !!---------------------------------------------------------------------- |
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171 | ! |
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172 | IF(lwp) WRITE(numout,*) |
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173 | IF(lwp) WRITE(numout,*) 'usr_def_ini : analytical definition of initial state ' |
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174 | IF(lwp) WRITE(numout,*) ' T and S profiles deduced from LEVITUS ' |
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175 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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176 | ! |
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177 | DO jk = 1, jpk |
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178 | DO jj = 1, jpj |
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179 | DO ji = 1, jpi |
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180 | pts(ji,jj,jk,jp_tem) = ( ( 16. - 12. * TANH( (gdept_n(ji,jj,jk) - 400) / 700 ) ) & |
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181 | & * (-TANH( (500-gdept_n(ji,jj,jk)) / 150 ) + 1) / 2 & |
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182 | & + ( 15. * ( 1. - TANH( (gdept_n(ji,jj,jk)-50.) / 1500.) ) & |
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183 | & - 1.4 * TANH((gdept_n(ji,jj,jk)-100.) / 100.) & |
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184 | & + 7. * (1500. - gdept_n(ji,jj,jk)) / 1500.) & |
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185 | & * (-TANH( (gdept_n(ji,jj,jk) - 500) / 150) + 1) / 2 ) * tmask(ji,jj,jk) |
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186 | |
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187 | pts(ji,jj,jk,jp_sal) = ( ( 36.25 - 1.13 * TANH( (gdept_n(ji,jj,jk) - 305) / 460 ) ) & |
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188 | & * (-TANH((500 - gdept_n(ji,jj,jk)) / 150) + 1) / 2 & |
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189 | & + ( 35.55 + 1.25 * (5000. - gdept_n(ji,jj,jk)) / 5000. & |
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190 | & - 1.62 * TANH( (gdept_n(ji,jj,jk) - 60. ) / 650. ) & |
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191 | & + 0.2 * TANH( (gdept_n(ji,jj,jk) - 35. ) / 100. ) & |
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192 | & + 0.2 * TANH( (gdept_n(ji,jj,jk) - 1000.) / 5000.) ) & |
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193 | & * (-TANH((gdept_n(ji,jj,jk) - 500) / 150) + 1) / 2 ) * tmask(ji,jj,jk) |
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194 | END DO |
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195 | END DO |
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196 | END DO |
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197 | ! |
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198 | END SUBROUTINE usr_def_ini |
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199 | |
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200 | !!====================================================================== |
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201 | END MODULE usrdef |
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