1 | MODULE dynhpg |
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2 | !!====================================================================== |
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3 | !! *** MODULE dynhpg *** |
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4 | !! Ocean dynamics: hydrostatic pressure gradient trend |
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5 | !!====================================================================== |
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6 | |
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7 | !!---------------------------------------------------------------------- |
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8 | !! dyn_hpg : update the momentum trend with the now horizontal |
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9 | !! gradient of the hydrostatic pressure |
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10 | !! default case : k-j-i loops (vector opt. available) |
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11 | !! hpg_ctl : initialisation and control of options |
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12 | !! hpg_zco : z-coordinate scheme |
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13 | !! hpg_zps : z-coordinate plus partial steps (interpolation) |
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14 | !! hpg_sco : s-coordinate (standard jacobian formulation) |
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15 | !! hpg_hel : s-coordinate (helsinki modification) |
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16 | !! hpg_wdj : s-coordinate (weighted density jacobian) |
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17 | !! hpg_djc : s-coordinate (Density Jacobian with Cubic polynomial) |
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18 | !! hpg_rot : s-coordinate (ROTated axes scheme) |
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19 | !!---------------------------------------------------------------------- |
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20 | !! * Modules used |
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21 | USE oce ! ocean dynamics and tracers |
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22 | USE dom_oce ! ocean space and time domain |
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23 | USE dynhpg_jki ! |
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24 | USE phycst ! physical constants |
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25 | USE in_out_manager ! I/O manager |
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26 | USE trdmod ! ocean dynamics trends |
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27 | USE trdmod_oce ! ocean variables trends |
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28 | USE prtctl ! Print control |
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29 | USE lbclnk ! lateral boundary condition |
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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 | !! * Accessibility |
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35 | PUBLIC dyn_hpg ! routine called by step.F90 |
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36 | |
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37 | #if defined key_mpp_omp |
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38 | !!---------------------------------------------------------------------- |
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39 | !! 'key_mpp_omp' : j-k-i loop (j-slab) |
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40 | !!---------------------------------------------------------------------- |
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41 | LOGICAL, PUBLIC, PARAMETER :: lk_dynhpg_jki = .TRUE. !: OpenMP hpg flag |
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42 | LOGICAL, PUBLIC, PARAMETER :: lk_dynhpg = .FALSE. !: vector hpg flag |
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43 | #else |
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44 | !!---------------------------------------------------------------------- |
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45 | !! default case : k-j-i loop (vector opt.) |
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46 | !!---------------------------------------------------------------------- |
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47 | LOGICAL, PUBLIC, PARAMETER :: lk_dynhpg_jki = .FALSE. !: OpenMP hpg flag |
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48 | LOGICAL, PUBLIC, PARAMETER :: lk_dynhpg = .TRUE. !: vector hpg flag |
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49 | #endif |
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50 | |
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51 | !! * Share module variables |
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52 | LOGICAL :: & !!! ** nam_dynhpg ** hpg flags |
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53 | ln_hpg_zco = .TRUE. , & ! z-coordinate - full steps |
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54 | ln_hpg_zps = .FALSE., & ! z-coordinate - partial steps (interpolation) |
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55 | ln_hpg_sco = .FALSE., & ! s-coordinate (standard jacobian formulation) |
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56 | ln_hpg_hel = .FALSE., & ! s-coordinate (helsinki modification) |
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57 | ln_hpg_wdj = .FALSE., & ! s-coordinate (weighted density jacobian) |
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58 | ln_hpg_djc = .FALSE., & ! s-coordinate (Density Jacobian with Cubic polynomial) |
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59 | ln_hpg_rot = .FALSE. ! s-coordinate (ROTated axes scheme) |
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60 | |
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61 | REAL(wp) :: & !!! ** nam_dynhpg ** |
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62 | gamm = 0.e0 ! weighting coefficient |
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63 | |
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64 | INTEGER :: & ! |
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65 | nhpg = 0 ! = 0 to 6, type of pressure gradient scheme used |
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66 | ! ! (deduced from ln_hpg_... flags) |
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67 | |
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68 | !! * Substitutions |
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69 | # include "domzgr_substitute.h90" |
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70 | # include "vectopt_loop_substitute.h90" |
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71 | !!---------------------------------------------------------------------- |
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72 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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73 | !! $Header$ |
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74 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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75 | !!---------------------------------------------------------------------- |
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76 | |
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77 | CONTAINS |
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78 | |
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79 | SUBROUTINE dyn_hpg( kt ) |
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80 | !!--------------------------------------------------------------------- |
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81 | !! *** ROUTINE dyn_hpg *** |
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82 | !! |
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83 | !! ** Method : Call the hydrostatic pressure gradient routine |
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84 | !! using the scheme defined in the namelist (nhpg parameter) |
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85 | !! |
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86 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
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87 | !! - Save the trend (l_trddyn=T) |
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88 | !! - Control print (ln_ctl) |
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89 | !! |
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90 | !! History : |
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91 | !! 9.0 ! 05-10 (A. Beckmann, G. Madec) various s-coordinate options |
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92 | !!---------------------------------------------------------------------- |
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93 | !! * Arguments |
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94 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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95 | |
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96 | !! * local declarations |
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97 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: & |
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98 | ztrdu, ztrdv ! 3D temporary workspace |
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99 | !!---------------------------------------------------------------------- |
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100 | |
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101 | IF( kt == nit000 ) CALL hpg_ctl ! initialisation & control of options |
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102 | |
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103 | ! Temporary saving of ua and va trends (l_trddyn) |
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104 | IF( l_trddyn ) THEN |
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105 | ztrdu(:,:,:) = ua(:,:,:) |
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106 | ztrdv(:,:,:) = va(:,:,:) |
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107 | ENDIF |
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108 | |
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109 | SELECT CASE ( nhpg ) ! Hydrastatic pressure gradient computation |
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110 | CASE ( 0 ) ! z-coordinate |
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111 | CALL hpg_zco( kt ) |
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112 | CASE ( 1 ) ! z-coordinate plus partial steps (interpolation) |
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113 | CALL hpg_zps( kt ) |
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114 | CASE ( 2 ) ! s-coordinate (standard jacobian formulation) |
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115 | CALL hpg_sco( kt ) |
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116 | CASE ( 3 ) ! s-coordinate (helsinki modification) |
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117 | CALL hpg_hel( kt ) |
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118 | CASE ( 4 ) ! s-coordinate (weighted density jacobian) |
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119 | CALL hpg_wdj( kt ) |
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120 | CASE ( 5 ) ! s-coordinate (Density Jacobian with Cubic polynomial) |
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121 | CALL hpg_djc( kt ) |
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122 | CASE ( 6 ) ! s-coordinate (ROTated axes scheme) |
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123 | CALL hpg_rot( kt ) |
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124 | CASE ( 10 ) ! z-coordinate |
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125 | CALL hpg_zco_jki( kt ) |
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126 | CASE ( 11 ) ! z-coordinate plus partial steps (interpolation) |
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127 | CALL hpg_zps_jki( kt ) |
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128 | CASE ( 12 ) ! s-coordinate (standard jacobian formulation) |
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129 | CALL hpg_sco_jki( kt ) |
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130 | END SELECT |
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131 | |
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132 | ! save the hydrostatic pressure gradient trends for momentum trend diagnostics |
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133 | IF( l_trddyn ) THEN |
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134 | ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) |
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135 | ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) |
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136 | CALL trd_mod( ztrdu, ztrdv, jpdtdhpg, 'DYN', kt ) |
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137 | ENDIF |
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138 | |
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139 | IF(ln_ctl) THEN ! print sum trends (used for debugging) |
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140 | CALL prt_ctl( tab3d_1=ua, clinfo1=' hpg - Ua: ', mask1=umask, & |
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141 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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142 | ENDIF |
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143 | |
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144 | END SUBROUTINE dyn_hpg |
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145 | |
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146 | |
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147 | SUBROUTINE hpg_ctl |
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148 | !!---------------------------------------------------------------------- |
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149 | !! *** ROUTINE hpg_ctl *** |
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150 | !! |
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151 | !! ** Purpose : initializations for the hydrostatic pressure gradient |
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152 | !! computation and consistency control |
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153 | !! |
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154 | !! ** Action : Read the namelist namdynhpg and check the consistency |
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155 | !! with the type of vertical coordinate used (zco, zps, sco) |
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156 | !! |
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157 | !! History : |
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158 | !! 9.0 ! 05-10 (A. Beckmann) Original code |
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159 | !!---------------------------------------------------------------------- |
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160 | INTEGER :: ioptio = 0 ! temporary integer |
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161 | |
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162 | NAMELIST/nam_dynhpg/ ln_hpg_zco, ln_hpg_zps, ln_hpg_sco, & |
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163 | & ln_hpg_hel, ln_hpg_wdj, ln_hpg_djc, ln_hpg_rot, & |
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164 | & gamm |
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165 | !!---------------------------------------------------------------------- |
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166 | |
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167 | ! Read Namelist nam_dynhpg : pressure gradient calculation options |
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168 | REWIND ( numnam ) |
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169 | READ ( numnam, nam_dynhpg ) |
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170 | |
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171 | ! Control print |
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172 | IF(lwp) THEN |
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173 | WRITE(numout,*) |
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174 | WRITE(numout,*) 'dyn:hpg_ctl : hydrostatic pressure gradient control' |
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175 | WRITE(numout,*) '~~~~~~~~~~~' |
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176 | WRITE(numout,*) ' Namelist nam_dynhpg : choice of hpg scheme' |
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177 | WRITE(numout,*) ' z-coord. - full steps ln_hpg_zco = ', ln_hpg_zco |
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178 | WRITE(numout,*) ' z-coord. - partial steps (interpolation) ln_hpg_zps = ', ln_hpg_zps |
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179 | WRITE(numout,*) ' s-coord. (standard jacobian formulation) ln_hpg_sco = ', ln_hpg_sco |
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180 | WRITE(numout,*) ' s-coord. (helsinki modification) ln_hpg_hel = ', ln_hpg_hel |
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181 | WRITE(numout,*) ' s-coord. (weighted density jacobian) ln_hpg_wdj = ', ln_hpg_wdj |
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182 | WRITE(numout,*) ' s-coord. (Density Jacobian: Cubic polynomial) ln_hpg_djc = ', ln_hpg_djc |
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183 | WRITE(numout,*) ' s-coord. (ROTated axes scheme) ln_hpg_rot = ', ln_hpg_rot |
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184 | WRITE(numout,*) ' weighting coeff. (wdj scheme) gamm = ', gamm |
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185 | ENDIF |
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186 | |
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187 | ! set nhpg from ln_hpg_... flags |
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188 | IF( ln_hpg_zco ) nhpg = 0 |
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189 | IF( ln_hpg_zps ) nhpg = 1 |
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190 | IF( ln_hpg_sco ) nhpg = 2 |
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191 | IF( ln_hpg_hel ) nhpg = 3 |
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192 | IF( ln_hpg_wdj ) nhpg = 4 |
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193 | IF( ln_hpg_djc ) nhpg = 5 |
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194 | IF( ln_hpg_rot ) nhpg = 6 |
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195 | |
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196 | ! Consitency check |
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197 | ioptio = 0 |
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198 | IF( ln_hpg_zco ) ioptio = ioptio + 1 |
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199 | IF( ln_hpg_zps ) ioptio = ioptio + 1 |
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200 | IF( ln_hpg_sco ) ioptio = ioptio + 1 |
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201 | IF( ln_hpg_hel ) ioptio = ioptio + 1 |
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202 | IF( ln_hpg_wdj ) ioptio = ioptio + 1 |
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203 | IF( ln_hpg_djc ) ioptio = ioptio + 1 |
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204 | IF( ln_hpg_rot ) ioptio = ioptio + 1 |
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205 | IF ( ioptio > 1 ) THEN |
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206 | IF(lwp) WRITE(numout,cform_err) |
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207 | IF(lwp) WRITE(numout,*) ' several hydrostatic pressure gradient options used' |
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208 | nstop = nstop + 1 |
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209 | ENDIF |
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210 | |
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211 | IF( lk_dynhpg_jki ) THEN |
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212 | nhpg = nhpg + 10 |
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213 | IF(lwp) WRITE(numout,*) |
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214 | IF(lwp) WRITE(numout,*) ' Autotasking or OPENMP: use j-k-i loops (i.e. _jki routines)' |
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215 | ENDIF |
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216 | |
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217 | END SUBROUTINE hpg_ctl |
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218 | |
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219 | |
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220 | SUBROUTINE hpg_zco( kt ) |
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221 | !!--------------------------------------------------------------------- |
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222 | !! *** ROUTINE hpg_zco *** |
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223 | !! |
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224 | !! ** Method : z-coordinate case, levels are horizontal surfaces. |
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225 | !! The now hydrostatic pressure gradient at a given level, jk, |
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226 | !! is computed by taking the vertical integral of the in-situ |
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227 | !! density gradient along the model level from the suface to that |
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228 | !! level: zhpi = grav ..... |
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229 | !! zhpj = grav ..... |
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230 | !! add it to the general momentum trend (ua,va). |
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231 | !! ua = ua - 1/e1u * zhpi |
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232 | !! va = va - 1/e2v * zhpj |
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233 | !! |
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234 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
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235 | !! |
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236 | !! History : |
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237 | !! 1.0 ! 87-09 (P. Andrich, M.-A. Foujols) Original code |
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238 | !! 5.0 ! 91-11 (G. Madec) |
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239 | !! 7.0 ! 96-01 (G. Madec) |
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240 | !! 8.0 ! 97-05 (G. Madec) split dynber into dynkeg and dynhpg |
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241 | !! 8.5 ! 02-07 (G. Madec) F90: Free form and module |
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242 | !!---------------------------------------------------------------------- |
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243 | !! * modules used |
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244 | USE oce, ONLY : zhpi => ta, & ! use ta as 3D workspace |
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245 | & zhpj => sa ! use sa as 3D workspace |
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246 | |
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247 | !! * Arguments |
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248 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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249 | |
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250 | !! * local declarations |
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251 | INTEGER :: ji, jj, jk ! dummy loop indices |
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252 | REAL(wp) :: & |
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253 | zcoef0, zcoef1 ! temporary scalars |
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254 | !!---------------------------------------------------------------------- |
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255 | |
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256 | IF( kt == nit000 ) THEN |
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257 | IF(lwp) WRITE(numout,*) |
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258 | IF(lwp) WRITE(numout,*) 'dyn:hpg_zco : hydrostatic pressure gradient trend' |
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259 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ z-coordinate case ' |
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260 | ENDIF |
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261 | |
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262 | |
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263 | ! Local constant initialization |
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264 | ! ----------------------------- |
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265 | zcoef0 = - grav * 0.5 |
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266 | |
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267 | ! Surface value |
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268 | ! ------------- |
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269 | DO jj = 2, jpjm1 |
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270 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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271 | zcoef1 = zcoef0 * fse3w(ji,jj,1) |
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272 | ! hydrostatic pressure gradient |
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273 | zhpi(ji,jj,1) = zcoef1 * ( rhd(ji+1,jj,1) - rhd(ji,jj,1) ) / e1u(ji,jj) |
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274 | zhpj(ji,jj,1) = zcoef1 * ( rhd(ji,jj+1,1) - rhd(ji,jj,1) ) / e2v(ji,jj) |
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275 | ! add to the general momentum trend |
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276 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
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277 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
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278 | END DO |
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279 | END DO |
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280 | |
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281 | ! interior value (2=<jk=<jpkm1) |
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282 | ! -------------- |
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283 | DO jk = 2, jpkm1 |
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284 | DO jj = 2, jpjm1 |
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285 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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286 | zcoef1 = zcoef0 * fse3w(ji,jj,jk) |
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287 | ! hydrostatic pressure gradient |
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288 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
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289 | & + zcoef1 * ( ( rhd(ji+1,jj,jk)+rhd(ji+1,jj,jk-1) ) & |
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290 | & - ( rhd(ji ,jj,jk)+rhd(ji ,jj,jk-1) ) ) / e1u(ji,jj) |
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291 | |
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292 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
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293 | & + zcoef1 * ( ( rhd(ji,jj+1,jk)+rhd(ji,jj+1,jk-1) ) & |
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294 | & - ( rhd(ji,jj, jk)+rhd(ji,jj ,jk-1) ) ) / e2v(ji,jj) |
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295 | ! add to the general momentum trend |
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296 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
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297 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
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298 | END DO |
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299 | END DO |
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300 | END DO |
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301 | |
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302 | END SUBROUTINE hpg_zco |
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303 | |
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304 | |
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305 | SUBROUTINE hpg_zps( kt ) |
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306 | !!--------------------------------------------------------------------- |
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307 | !! *** ROUTINE hpg_zps *** |
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308 | !! |
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309 | !! ** Method : z-coordinate plus partial steps case. blahblah... |
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310 | !! |
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311 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
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312 | !! |
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313 | !! History : |
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314 | !! 8.5 ! 02-08 (A. Bozec) Original code |
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315 | !! 9.0 ! 04-08 (G. Madec) F90 |
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316 | !!---------------------------------------------------------------------- |
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317 | !! * modules used |
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318 | USE oce, ONLY : zhpi => ta, & ! use ta as 3D workspace |
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319 | & zhpj => sa ! use sa as 3D workspace |
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320 | |
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321 | !! * Arguments |
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322 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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323 | |
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324 | !! * local declarations |
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325 | INTEGER :: ji, jj, jk ! dummy loop indices |
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326 | INTEGER :: iku, ikv ! temporary integers |
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327 | REAL(wp) :: & |
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328 | zcoef0, zcoef1, & ! temporary scalars |
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329 | zcoef2, zcoef3 ! " " |
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330 | !!---------------------------------------------------------------------- |
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331 | |
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332 | IF( kt == nit000 ) THEN |
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333 | IF(lwp) WRITE(numout,*) |
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334 | IF(lwp) WRITE(numout,*) 'dyn:hpg_zps : hydrostatic pressure gradient trend' |
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335 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ z-coordinate with partial steps' |
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336 | IF(lwp) WRITE(numout,*) ' vector optimization' |
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337 | ENDIF |
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338 | |
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339 | |
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340 | ! 0. Local constant initialization |
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341 | ! -------------------------------- |
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342 | zcoef0 = - grav * 0.5 |
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343 | |
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344 | ! 1. Surface value |
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345 | ! ---------------- |
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346 | DO jj = 2, jpjm1 |
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347 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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348 | zcoef1 = zcoef0 * fse3w(ji,jj,1) |
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349 | ! hydrostatic pressure gradient |
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350 | zhpi(ji,jj,1) = zcoef1 * ( rhd(ji+1,jj ,1) - rhd(ji,jj,1) ) / e1u(ji,jj) |
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351 | zhpj(ji,jj,1) = zcoef1 * ( rhd(ji ,jj+1,1) - rhd(ji,jj,1) ) / e2v(ji,jj) |
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352 | ! add to the general momentum trend |
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353 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
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354 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
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355 | END DO |
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356 | END DO |
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357 | |
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358 | ! 2. interior value (2=<jk=<jpkm1) |
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359 | ! ----------------- |
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360 | DO jk = 2, jpkm1 |
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361 | DO jj = 2, jpjm1 |
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362 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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363 | zcoef1 = zcoef0 * fse3w(ji,jj,jk) |
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364 | ! hydrostatic pressure gradient |
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365 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
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366 | & + zcoef1 * ( ( rhd(ji+1,jj,jk) + rhd(ji+1,jj,jk-1) ) & |
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367 | & - ( rhd(ji ,jj,jk) + rhd(ji ,jj,jk-1) ) ) / e1u(ji,jj) |
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368 | |
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369 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
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370 | & + zcoef1 * ( ( rhd(ji,jj+1,jk) + rhd(ji,jj+1,jk-1) ) & |
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371 | & - ( rhd(ji,jj, jk) + rhd(ji,jj ,jk-1) ) ) / e2v(ji,jj) |
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372 | ! add to the general momentum trend |
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373 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
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374 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
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375 | END DO |
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376 | END DO |
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377 | END DO |
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378 | |
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379 | ! partial steps correction at the last level (new gradient with intgrd.F) |
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380 | # if defined key_vectopt_loop |
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381 | jj = 1 |
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382 | DO ji = jpi+2, jpij-jpi-1 ! vector opt. (forced unrolling) |
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383 | # else |
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384 | DO jj = 2, jpjm1 |
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385 | DO ji = 2, jpim1 |
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386 | # endif |
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387 | iku = MIN ( mbathy(ji,jj), mbathy(ji+1,jj) ) - 1 |
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388 | ikv = MIN ( mbathy(ji,jj), mbathy(ji,jj+1) ) - 1 |
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389 | zcoef2 = zcoef0 * MIN( fse3w(ji,jj,iku), fse3w(ji+1,jj ,iku) ) |
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390 | zcoef3 = zcoef0 * MIN( fse3w(ji,jj,ikv), fse3w(ji ,jj+1,ikv) ) |
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391 | ! on i-direction |
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392 | IF ( iku > 2 ) THEN |
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393 | ! subtract old value |
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394 | ua(ji,jj,iku) = ua(ji,jj,iku) - zhpi(ji,jj,iku) |
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395 | ! compute the new one |
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396 | zhpi (ji,jj,iku) = zhpi(ji,jj,iku-1) & |
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397 | + zcoef2 * ( rhd(ji+1,jj,iku-1) - rhd(ji,jj,iku-1) + gru(ji,jj) ) / e1u(ji,jj) |
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398 | ! add the new one to the general momentum trend |
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399 | ua(ji,jj,iku) = ua(ji,jj,iku) + zhpi(ji,jj,iku) |
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400 | ENDIF |
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401 | ! on j-direction |
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402 | IF ( ikv > 2 ) THEN |
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403 | ! subtract old value |
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404 | va(ji,jj,ikv) = va(ji,jj,ikv) - zhpj(ji,jj,ikv) |
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405 | ! compute the new one |
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406 | zhpj (ji,jj,ikv) = zhpj(ji,jj,ikv-1) & |
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407 | + zcoef3 * ( rhd(ji,jj+1,ikv-1) - rhd(ji,jj,ikv-1) + grv(ji,jj) ) / e2v(ji,jj) |
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408 | ! add the new one to the general momentum trend |
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409 | va(ji,jj,ikv) = va(ji,jj,ikv) + zhpj(ji,jj,ikv) |
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410 | ENDIF |
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411 | # if ! defined key_vectopt_loop |
---|
412 | END DO |
---|
413 | # endif |
---|
414 | END DO |
---|
415 | |
---|
416 | END SUBROUTINE hpg_zps |
---|
417 | |
---|
418 | |
---|
419 | SUBROUTINE hpg_sco( kt ) |
---|
420 | !!--------------------------------------------------------------------- |
---|
421 | !! *** ROUTINE hpg_sco *** |
---|
422 | !! |
---|
423 | !! ** Method : s-coordinate case. Jacobian scheme. |
---|
424 | !! The now hydrostatic pressure gradient at a given level, jk, |
---|
425 | !! is computed by taking the vertical integral of the in-situ |
---|
426 | !! density gradient along the model level from the suface to that |
---|
427 | !! level. s-coordinates (ln_sco): a corrective term is added |
---|
428 | !! to the horizontal pressure gradient : |
---|
429 | !! zhpi = grav ..... + 1/e1u mi(rhd) di[ grav dep3w ] |
---|
430 | !! zhpj = grav ..... + 1/e2v mj(rhd) dj[ grav dep3w ] |
---|
431 | !! add it to the general momentum trend (ua,va). |
---|
432 | !! ua = ua - 1/e1u * zhpi |
---|
433 | !! va = va - 1/e2v * zhpj |
---|
434 | !! |
---|
435 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
436 | !! |
---|
437 | !! History : |
---|
438 | !! 7.0 ! 96-01 (G. Madec) s-coordinates |
---|
439 | !! ! 97-05 (G. Madec) split dynber into dynkeg and dynhpg |
---|
440 | !! 8.5 ! 02-08 (G. Madec) F90: Free form and module, vector opt. |
---|
441 | !! 9.0 ! 04-08 (C. Talandier) New trends organization |
---|
442 | !! 9.0 ! 05-10 (A. Beckmann) various s-coordinate options |
---|
443 | !!---------------------------------------------------------------------- |
---|
444 | !! * modules used |
---|
445 | USE oce, ONLY : zhpi => ta, & ! use ta as 3D workspace |
---|
446 | & zhpj => sa ! use sa as 3D workspace |
---|
447 | |
---|
448 | !! * Arguments |
---|
449 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
---|
450 | |
---|
451 | !! * Local declarations |
---|
452 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
453 | REAL(wp) :: & |
---|
454 | zcoef0, zuap, zvap ! temporary scalars |
---|
455 | !!---------------------------------------------------------------------- |
---|
456 | |
---|
457 | IF( kt == nit000 ) THEN |
---|
458 | IF(lwp) WRITE(numout,*) |
---|
459 | IF(lwp) WRITE(numout,*) 'dyn:hpg_sco : hydrostatic pressure gradient trend' |
---|
460 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, OPA original scheme used' |
---|
461 | ENDIF |
---|
462 | |
---|
463 | |
---|
464 | ! 0. Local constant initialization |
---|
465 | ! -------------------------------- |
---|
466 | zcoef0 = - grav * 0.5 |
---|
467 | |
---|
468 | |
---|
469 | ! 1. Surface value |
---|
470 | ! ---------------- |
---|
471 | DO jj = 2, jpjm1 |
---|
472 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
473 | ! hydrostatic pressure gradient along s-surfaces |
---|
474 | zhpi(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3w(ji+1,jj ,1) * rhd(ji+1,jj ,1) & |
---|
475 | & - fse3w(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
476 | zhpj(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3w(ji ,jj+1,1) * rhd(ji ,jj+1,1) & |
---|
477 | & - fse3w(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
478 | ! s-coordinate pressure gradient correction |
---|
479 | zuap = -zcoef0 * ( rhd (ji+1,jj,1) + rhd (ji,jj,1) ) & |
---|
480 | & * ( fsde3w(ji+1,jj,1) - fsde3w(ji,jj,1) ) / e1u(ji,jj) |
---|
481 | zvap = -zcoef0 * ( rhd (ji,jj+1,1) + rhd (ji,jj,1) ) & |
---|
482 | & * ( fsde3w(ji,jj+1,1) - fsde3w(ji,jj,1) ) / e2v(ji,jj) |
---|
483 | ! add to the general momentum trend |
---|
484 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) + zuap |
---|
485 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) + zvap |
---|
486 | END DO |
---|
487 | END DO |
---|
488 | |
---|
489 | |
---|
490 | ! 2. interior value (2=<jk=<jpkm1) |
---|
491 | ! ----------------- |
---|
492 | DO jk = 2, jpkm1 |
---|
493 | DO jj = 2, jpjm1 |
---|
494 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
495 | ! hydrostatic pressure gradient along s-surfaces |
---|
496 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) + zcoef0 / e1u(ji,jj) & |
---|
497 | & * ( fse3w(ji+1,jj,jk) * ( rhd(ji+1,jj,jk) + rhd(ji+1,jj,jk-1) ) & |
---|
498 | & - fse3w(ji ,jj,jk) * ( rhd(ji ,jj,jk) + rhd(ji ,jj,jk-1) ) ) |
---|
499 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) + zcoef0 / e2v(ji,jj) & |
---|
500 | & * ( fse3w(ji,jj+1,jk) * ( rhd(ji,jj+1,jk) + rhd(ji,jj+1,jk-1) ) & |
---|
501 | & - fse3w(ji,jj ,jk) * ( rhd(ji,jj, jk) + rhd(ji,jj ,jk-1) ) ) |
---|
502 | ! s-coordinate pressure gradient correction |
---|
503 | zuap = -zcoef0 * ( rhd (ji+1,jj ,jk) + rhd (ji,jj,jk) ) & |
---|
504 | & * ( fsde3w(ji+1,jj ,jk) - fsde3w(ji,jj,jk) ) / e1u(ji,jj) |
---|
505 | zvap = -zcoef0 * ( rhd (ji ,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
506 | & * ( fsde3w(ji ,jj+1,jk) - fsde3w(ji,jj,jk) ) / e2v(ji,jj) |
---|
507 | ! add to the general momentum trend |
---|
508 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) + zuap |
---|
509 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) + zvap |
---|
510 | END DO |
---|
511 | END DO |
---|
512 | END DO |
---|
513 | |
---|
514 | END SUBROUTINE hpg_sco |
---|
515 | |
---|
516 | |
---|
517 | SUBROUTINE hpg_hel( kt ) |
---|
518 | !!--------------------------------------------------------------------- |
---|
519 | !! *** ROUTINE hpg_hel *** |
---|
520 | !! |
---|
521 | !! ** Method : s-coordinate case. |
---|
522 | !! The now hydrostatic pressure gradient at a given level |
---|
523 | !! jk is computed by taking the vertical integral of the in-situ |
---|
524 | !! density gradient along the model level from the suface to that |
---|
525 | !! level. s-coordinates (ln_sco): a corrective term is added |
---|
526 | !! to the horizontal pressure gradient : |
---|
527 | !! zhpi = grav ..... + 1/e1u mi(rhd) di[ grav dep3w ] |
---|
528 | !! zhpj = grav ..... + 1/e2v mj(rhd) dj[ grav dep3w ] |
---|
529 | !! add it to the general momentum trend (ua,va). |
---|
530 | !! ua = ua - 1/e1u * zhpi |
---|
531 | !! va = va - 1/e2v * zhpj |
---|
532 | !! |
---|
533 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
534 | !! - Save the trend (l_trddyn=T) |
---|
535 | !! |
---|
536 | !! History : |
---|
537 | !! 9.0 ! 05-10 (A. Beckmann) Original code |
---|
538 | !!---------------------------------------------------------------------- |
---|
539 | !! * modules used |
---|
540 | USE oce, ONLY : zhpi => ta, & ! use ta as 3D workspace |
---|
541 | & zhpj => sa ! use sa as 3D workspace |
---|
542 | |
---|
543 | !! * Arguments |
---|
544 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
---|
545 | |
---|
546 | !! * Local declarations |
---|
547 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
548 | REAL(wp) :: & |
---|
549 | zcoef0, zuap, zvap ! temporary scalars |
---|
550 | !!---------------------------------------------------------------------- |
---|
551 | |
---|
552 | IF( kt == nit000 ) THEN |
---|
553 | IF(lwp) WRITE(numout,*) |
---|
554 | IF(lwp) WRITE(numout,*) 'dyn:hpg_hel : hydrostatic pressure gradient trend' |
---|
555 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, helsinki modified scheme' |
---|
556 | ENDIF |
---|
557 | |
---|
558 | |
---|
559 | ! 0. Local constant initialization |
---|
560 | ! -------------------------------- |
---|
561 | zcoef0 = - grav * 0.5 |
---|
562 | |
---|
563 | |
---|
564 | ! 1. Surface value |
---|
565 | ! ---------------- |
---|
566 | DO jj = 2, jpjm1 |
---|
567 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
568 | ! hydrostatic pressure gradient along s-surfaces |
---|
569 | zhpi(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj ,1) * rhd(ji+1,jj ,1) & |
---|
570 | & - fse3t(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
571 | zhpj(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3t(ji ,jj+1,1) * rhd(ji ,jj+1,1) & |
---|
572 | & - fse3t(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
573 | ! s-coordinate pressure gradient correction |
---|
574 | zuap = -zcoef0 * ( rhd (ji+1,jj,1) + rhd (ji,jj,1) ) & |
---|
575 | & * ( fsdept(ji+1,jj,1) - fsdept(ji,jj,1) ) / e1u(ji,jj) |
---|
576 | zvap = -zcoef0 * ( rhd (ji,jj+1,1) + rhd (ji,jj,1) ) & |
---|
577 | & * ( fsdept(ji,jj+1,1) - fsdept(ji,jj,1) ) / e2v(ji,jj) |
---|
578 | ! add to the general momentum trend |
---|
579 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) + zuap |
---|
580 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) + zvap |
---|
581 | END DO |
---|
582 | END DO |
---|
583 | |
---|
584 | ! 2. interior value (2=<jk=<jpkm1) |
---|
585 | ! ----------------- |
---|
586 | DO jk = 2, jpkm1 |
---|
587 | DO jj = 2, jpjm1 |
---|
588 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
589 | ! hydrostatic pressure gradient along s-surfaces |
---|
590 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
---|
591 | & + zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,jk ) * rhd(ji+1,jj,jk) & |
---|
592 | & -fse3t(ji ,jj,jk ) * rhd(ji ,jj,jk) ) & |
---|
593 | & + zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,jk-1) * rhd(ji+1,jj,jk-1) & |
---|
594 | & -fse3t(ji ,jj,jk-1) * rhd(ji ,jj,jk-1) ) |
---|
595 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
---|
596 | & + zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,jk ) * rhd(ji,jj+1,jk) & |
---|
597 | & -fse3t(ji,jj ,jk ) * rhd(ji,jj, jk) ) & |
---|
598 | & + zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,jk-1) * rhd(ji,jj+1,jk-1) & |
---|
599 | & -fse3t(ji,jj ,jk-1) * rhd(ji,jj, jk-1) ) |
---|
600 | ! s-coordinate pressure gradient correction |
---|
601 | zuap = - zcoef0 * ( rhd (ji+1,jj,jk) + rhd (ji,jj,jk) ) & |
---|
602 | & * ( fsdept(ji+1,jj,jk) - fsdept(ji,jj,jk) ) / e1u(ji,jj) |
---|
603 | zvap = - zcoef0 * ( rhd (ji,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
604 | & * ( fsdept(ji,jj+1,jk) - fsdept(ji,jj,jk) ) / e2v(ji,jj) |
---|
605 | ! add to the general momentum trend |
---|
606 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) + zuap |
---|
607 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) + zvap |
---|
608 | END DO |
---|
609 | END DO |
---|
610 | END DO |
---|
611 | |
---|
612 | END SUBROUTINE hpg_hel |
---|
613 | |
---|
614 | |
---|
615 | SUBROUTINE hpg_wdj( kt ) |
---|
616 | !!--------------------------------------------------------------------- |
---|
617 | !! *** ROUTINE hpg_wdj *** |
---|
618 | !! |
---|
619 | !! ** Method : Weighted Density Jacobian (wdj) scheme (song 1998) |
---|
620 | !! The weighting coefficients from the namelist parameter gamm |
---|
621 | !! (alpha=0.5-gamm ; beta=1-alpha=0.5+gamm) |
---|
622 | !! |
---|
623 | !! Reference : Song, Mon. Wea. Rev., 126, 3213-3230, 1998. |
---|
624 | !! |
---|
625 | !! History : |
---|
626 | !! 9.0 ! 05-05 (B.W. An) Original code |
---|
627 | !! ! 05-10 (G. Madec) style & small optimisation |
---|
628 | !!---------------------------------------------------------------------- |
---|
629 | !! * modules used |
---|
630 | USE oce, ONLY : zhpi => ta, & ! use ta as 3D workspace |
---|
631 | & zhpj => sa ! use sa as 3D workspace |
---|
632 | |
---|
633 | !! * Arguments |
---|
634 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
---|
635 | |
---|
636 | !! * Local declarations |
---|
637 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
638 | REAL(wp) :: & |
---|
639 | zcoef0, zuap, zvap, & ! temporary scalars |
---|
640 | zalph , zbeta ! " " |
---|
641 | !!---------------------------------------------------------------------- |
---|
642 | |
---|
643 | IF( kt == nit000 ) THEN |
---|
644 | IF(lwp) WRITE(numout,*) |
---|
645 | IF(lwp) WRITE(numout,*) 'dyn:hpg_wdj : hydrostatic pressure gradient trend' |
---|
646 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ Weighted Density Jacobian' |
---|
647 | ENDIF |
---|
648 | |
---|
649 | |
---|
650 | ! Local constant initialization |
---|
651 | ! ----------------------------- |
---|
652 | zcoef0 = - grav * 0.5 |
---|
653 | zalph = 0.5 - gamm ! weighting coefficients (alpha=0.5-gamm) |
---|
654 | zbeta = 0.5 + gamm ! (beta =1-alpha=0.5+gamm) |
---|
655 | |
---|
656 | ! Surface value (no ponderation) |
---|
657 | ! ------------- |
---|
658 | DO jj = 2, jpjm1 |
---|
659 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
660 | ! hydrostatic pressure gradient along s-surfaces |
---|
661 | zhpi(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3w(ji+1,jj ,1) * rhd(ji+1,jj ,1) & |
---|
662 | & - fse3w(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
663 | zhpj(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3w(ji ,jj+1,1) * rhd(ji ,jj+1,1) & |
---|
664 | & - fse3w(ji ,jj ,1) * rhd(ji, jj ,1) ) |
---|
665 | ! s-coordinate pressure gradient correction |
---|
666 | zuap = -zcoef0 * ( rhd (ji+1,jj,1) + rhd (ji,jj,1) ) & |
---|
667 | & * ( fsde3w(ji+1,jj,1) - fsde3w(ji,jj,1) ) / e1u(ji,jj) |
---|
668 | zvap = -zcoef0 * ( rhd (ji,jj+1,1) + rhd (ji,jj,1) ) & |
---|
669 | & * ( fsde3w(ji,jj+1,1) - fsde3w(ji,jj,1) ) / e2v(ji,jj) |
---|
670 | ! add to the general momentum trend |
---|
671 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) + zuap |
---|
672 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) + zvap |
---|
673 | END DO |
---|
674 | END DO |
---|
675 | |
---|
676 | ! Interior value (2=<jk=<jpkm1) (weighted with zalph & zbeta) |
---|
677 | ! -------------- |
---|
678 | DO jk = 2, jpkm1 |
---|
679 | DO jj = 2, jpjm1 |
---|
680 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
681 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) + zcoef0 / e1u(ji,jj) & |
---|
682 | & * ( ( fsde3w(ji+1,jj,jk ) + fsde3w(ji,jj,jk ) & |
---|
683 | & - fsde3w(ji+1,jj,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
684 | & * ( zalph * ( rhd (ji+1,jj,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
685 | & + zbeta * ( rhd (ji+1,jj,jk ) - rhd (ji,jj,jk ) ) ) & |
---|
686 | & - ( rhd (ji+1,jj,jk ) + rhd (ji,jj,jk ) & |
---|
687 | & - rhd (ji+1,jj,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
688 | & * ( zalph * ( fsde3w(ji+1,jj,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
689 | & + zbeta * ( fsde3w(ji+1,jj,jk ) - fsde3w(ji,jj,jk ) ) ) ) |
---|
690 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) + zcoef0 / e2v(ji,jj) & |
---|
691 | & * ( ( fsde3w(ji,jj+1,jk ) + fsde3w(ji,jj,jk ) & |
---|
692 | & - fsde3w(ji,jj+1,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
693 | & * ( zalph * ( rhd (ji,jj+1,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
694 | & + zbeta * ( rhd (ji,jj+1,jk ) - rhd (ji,jj,jk ) ) ) & |
---|
695 | & - ( rhd (ji,jj+1,jk ) + rhd (ji,jj,jk ) & |
---|
696 | & - rhd (ji,jj+1,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
697 | & * ( zalph * ( fsde3w(ji,jj+1,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
698 | & + zbeta * ( fsde3w(ji,jj+1,jk ) - fsde3w(ji,jj,jk ) ) ) ) |
---|
699 | ! add to the general momentum trend |
---|
700 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
---|
701 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
---|
702 | END DO |
---|
703 | END DO |
---|
704 | END DO |
---|
705 | |
---|
706 | END SUBROUTINE hpg_wdj |
---|
707 | |
---|
708 | |
---|
709 | SUBROUTINE hpg_djc( kt ) |
---|
710 | !!--------------------------------------------------------------------- |
---|
711 | !! *** ROUTINE hpg_djc *** |
---|
712 | !! |
---|
713 | !! ** Method : Density Jacobian with Cubic polynomial scheme |
---|
714 | !! |
---|
715 | !! Reference: Shchepetkin, A.F. & J.C. McWilliams, J. Geophys. Res., |
---|
716 | !! 108(C3), 3090, 2003 |
---|
717 | !! History : |
---|
718 | !! 9.0 ! 05-05 (B.W. An) Original code |
---|
719 | !!---------------------------------------------------------------------- |
---|
720 | !! * modules used |
---|
721 | USE oce, ONLY : zhpi => ta, & ! use ta as 3D workspace |
---|
722 | & zhpj => sa ! use sa as 3D workspace |
---|
723 | |
---|
724 | !! * Arguments |
---|
725 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
---|
726 | |
---|
727 | !! * Local declarations |
---|
728 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
729 | REAL(wp) :: & |
---|
730 | zcoef0, z1_10, cffu, cffx, & ! temporary scalars |
---|
731 | z1_12, cffv, cffy, & ! " " |
---|
732 | zep , cffw ! " " |
---|
733 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: & ! 3D workspace |
---|
734 | drhox, dzx, drhou, dzu, rho_i, & |
---|
735 | drhoy, dzy, drhov, dzv, rho_j, & |
---|
736 | drhoz, dzz, drhow, dzw, rho_k |
---|
737 | !!---------------------------------------------------------------------- |
---|
738 | |
---|
739 | IF( kt == nit000 ) THEN |
---|
740 | IF(lwp) WRITE(numout,*) |
---|
741 | IF(lwp) WRITE(numout,*) 'dyn:hpg_djc : hydrostatic pressure gradient trend' |
---|
742 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, density Jacobian with cubic polynomial scheme' |
---|
743 | ENDIF |
---|
744 | |
---|
745 | |
---|
746 | ! 0. Local constant initialization |
---|
747 | ! -------------------------------- |
---|
748 | zcoef0 = - grav * 0.5 |
---|
749 | z1_10 = 1.0 / 10.0 |
---|
750 | z1_12 = 1.0 / 12.0 |
---|
751 | |
---|
752 | !---------------------------------------------------------------------------------------- |
---|
753 | ! compute and store in provisional arrays elementary vertical and horizontal differences |
---|
754 | !---------------------------------------------------------------------------------------- |
---|
755 | |
---|
756 | !!bug gm Not a true bug, but... dzz=e3w for dzx, dzy verify what it is really |
---|
757 | |
---|
758 | DO jk = 2, jpkm1 |
---|
759 | DO jj = 2, jpjm1 |
---|
760 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
761 | drhoz(ji,jj,jk) = rhd (ji ,jj ,jk) - rhd (ji,jj,jk-1) |
---|
762 | dzz (ji,jj,jk) = fsde3w(ji ,jj ,jk) - fsde3w(ji,jj,jk-1) |
---|
763 | drhox(ji,jj,jk) = rhd (ji+1,jj ,jk) - rhd (ji,jj,jk ) |
---|
764 | dzx (ji,jj,jk) = fsde3w(ji+1,jj ,jk) - fsde3w(ji,jj,jk ) |
---|
765 | drhoy(ji,jj,jk) = rhd (ji ,jj+1,jk) - rhd (ji,jj,jk ) |
---|
766 | dzy (ji,jj,jk) = fsde3w(ji ,jj+1,jk) - fsde3w(ji,jj,jk ) |
---|
767 | END DO |
---|
768 | END DO |
---|
769 | END DO |
---|
770 | |
---|
771 | !------------------------------------------------------------------------- |
---|
772 | ! compute harmonic averages using eq. 5.18 |
---|
773 | !------------------------------------------------------------------------- |
---|
774 | zep = 1.e-15 |
---|
775 | |
---|
776 | !!bug gm drhoz not defined at level 1 and used (jk-1 with jk=2) |
---|
777 | !!bug gm idem for drhox, drhoy et ji=jpi and jj=jpj |
---|
778 | |
---|
779 | DO jk = 2, jpkm1 |
---|
780 | DO jj = 2, jpjm1 |
---|
781 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
782 | cffw = 2.0 * drhoz(ji ,jj ,jk) * drhoz(ji,jj,jk-1) |
---|
783 | |
---|
784 | cffu = 2.0 * drhox(ji+1,jj ,jk) * drhox(ji,jj,jk ) |
---|
785 | cffx = 2.0 * dzx (ji+1,jj ,jk) * dzx (ji,jj,jk ) |
---|
786 | |
---|
787 | cffv = 2.0 * drhoy(ji ,jj+1,jk) * drhoy(ji,jj,jk ) |
---|
788 | cffy = 2.0 * dzy (ji ,jj+1,jk) * dzy (ji,jj,jk ) |
---|
789 | |
---|
790 | IF( cffw > zep) THEN |
---|
791 | drhow(ji,jj,jk) = 2.0 * drhoz(ji,jj,jk) * drhoz(ji,jj,jk-1) & |
---|
792 | & / ( drhoz(ji,jj,jk) + drhoz(ji,jj,jk-1) ) |
---|
793 | ELSE |
---|
794 | drhow(ji,jj,jk) = 0.e0 |
---|
795 | ENDIF |
---|
796 | |
---|
797 | dzw(ji,jj,jk) = 2.0 * dzz(ji,jj,jk) * dzz(ji,jj,jk-1) & |
---|
798 | & / ( dzz(ji,jj,jk) + dzz(ji,jj,jk-1) ) |
---|
799 | |
---|
800 | IF( cffu > zep ) THEN |
---|
801 | drhou(ji,jj,jk) = 2.0 * drhox(ji+1,jj,jk) * drhox(ji,jj,jk) & |
---|
802 | & / ( drhox(ji+1,jj,jk) + drhox(ji,jj,jk) ) |
---|
803 | ELSE |
---|
804 | drhou(ji,jj,jk ) = 0.e0 |
---|
805 | ENDIF |
---|
806 | |
---|
807 | IF( cffx > zep ) THEN |
---|
808 | dzu(ji,jj,jk) = 2.0*dzx(ji+1,jj,jk)*dzx(ji,jj,jk) & |
---|
809 | & /(dzx(ji+1,jj,jk)+dzx(ji,jj,jk)) |
---|
810 | ELSE |
---|
811 | dzu(ji,jj,jk) = 0.e0 |
---|
812 | ENDIF |
---|
813 | |
---|
814 | IF( cffv > zep ) THEN |
---|
815 | drhov(ji,jj,jk) = 2.0 * drhoy(ji,jj+1,jk) * drhoy(ji,jj,jk) & |
---|
816 | & / ( drhoy(ji,jj+1,jk) + drhoy(ji,jj,jk) ) |
---|
817 | ELSE |
---|
818 | drhov(ji,jj,jk) = 0.e0 |
---|
819 | ENDIF |
---|
820 | |
---|
821 | IF( cffy > zep ) THEN |
---|
822 | dzv(ji,jj,jk) = 2.0 * dzy(ji,jj+1,jk) * dzy(ji,jj,jk) & |
---|
823 | & / ( dzy(ji,jj+1,jk) + dzy(ji,jj,jk) ) |
---|
824 | ELSE |
---|
825 | dzv(ji,jj,jk) = 0.e0 |
---|
826 | ENDIF |
---|
827 | |
---|
828 | END DO |
---|
829 | END DO |
---|
830 | END DO |
---|
831 | |
---|
832 | !---------------------------------------------------------------------------------- |
---|
833 | ! apply boundary conditions at top and bottom using 5.36-5.37 |
---|
834 | !---------------------------------------------------------------------------------- |
---|
835 | drhow(:,:, 1 ) = 1.5 * ( drhoz(:,:, 2 ) - drhoz(:,:, 1 ) ) - 0.5 * drhow(:,:, 2 ) |
---|
836 | drhou(:,:, 1 ) = 1.5 * ( drhox(:,:, 2 ) - drhox(:,:, 1 ) ) - 0.5 * drhou(:,:, 2 ) |
---|
837 | drhov(:,:, 1 ) = 1.5 * ( drhoy(:,:, 2 ) - drhoy(:,:, 1 ) ) - 0.5 * drhov(:,:, 2 ) |
---|
838 | |
---|
839 | drhow(:,:,jpk) = 1.5 * ( drhoz(:,:,jpk) - drhoz(:,:,jpkm1) ) - 0.5 * drhow(:,:,jpkm1) |
---|
840 | drhou(:,:,jpk) = 1.5 * ( drhox(:,:,jpk) - drhox(:,:,jpkm1) ) - 0.5 * drhou(:,:,jpkm1) |
---|
841 | drhov(:,:,jpk) = 1.5 * ( drhoy(:,:,jpk) - drhoy(:,:,jpkm1) ) - 0.5 * drhov(:,:,jpkm1) |
---|
842 | |
---|
843 | |
---|
844 | !-------------------------------------------------------------- |
---|
845 | ! Upper half of top-most grid box, compute and store |
---|
846 | !------------------------------------------------------------- |
---|
847 | |
---|
848 | !!bug gm : e3w-de3w = 0.5*e3w .... and de3w(2)-de3w(1)=e3w(2) .... to be verified |
---|
849 | ! true if de3w is really defined as the sum of the e3w scale factors as, it seems to me, it should be |
---|
850 | |
---|
851 | DO jj = 2, jpjm1 |
---|
852 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
853 | rho_k(ji,jj,1) = -grav * ( fse3w(ji,jj,1) - fsde3w(ji,jj,1) ) & |
---|
854 | & * ( rhd(ji,jj,1) & |
---|
855 | & + 0.5 * ( rhd(ji,jj,2) - rhd(ji,jj,1) ) & |
---|
856 | & * ( fse3w (ji,jj,1) - fsde3w(ji,jj,1) ) & |
---|
857 | & / ( fsde3w(ji,jj,2) - fsde3w(ji,jj,1) ) ) |
---|
858 | END DO |
---|
859 | END DO |
---|
860 | |
---|
861 | !!bug gm : here also, simplification is possible |
---|
862 | !!bug gm : optimisation: 1/10 and 1/12 the division should be done before the loop |
---|
863 | |
---|
864 | DO jk = 2, jpkm1 |
---|
865 | DO jj = 2, jpjm1 |
---|
866 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
867 | |
---|
868 | rho_k(ji,jj,jk) = zcoef0 * ( rhd (ji,jj,jk) + rhd (ji,jj,jk-1) ) & |
---|
869 | & * ( fsde3w(ji,jj,jk) - fsde3w(ji,jj,jk-1) ) & |
---|
870 | & - grav * z1_10 * ( & |
---|
871 | & ( drhow (ji,jj,jk) - drhow (ji,jj,jk-1) ) & |
---|
872 | & * ( fsde3w(ji,jj,jk) - fsde3w(ji,jj,jk-1) - z1_12 * ( dzw (ji,jj,jk) + dzw (ji,jj,jk-1) ) ) & |
---|
873 | & - ( dzw (ji,jj,jk) - dzw (ji,jj,jk-1) ) & |
---|
874 | & * ( rhd (ji,jj,jk) - rhd (ji,jj,jk-1) - z1_12 * ( drhow(ji,jj,jk) + drhow(ji,jj,jk-1) ) ) & |
---|
875 | & ) |
---|
876 | |
---|
877 | rho_i(ji,jj,jk) = zcoef0 * ( rhd (ji+1,jj,jk) + rhd (ji,jj,jk) ) & |
---|
878 | & * ( fsde3w(ji+1,jj,jk) - fsde3w(ji,jj,jk) ) & |
---|
879 | & - grav* z1_10 * ( & |
---|
880 | & ( drhou (ji+1,jj,jk) - drhou (ji,jj,jk) ) & |
---|
881 | & * ( fsde3w(ji+1,jj,jk) - fsde3w(ji,jj,jk) - z1_12 * ( dzu (ji+1,jj,jk) + dzu (ji,jj,jk) ) ) & |
---|
882 | & - ( dzu (ji+1,jj,jk) - dzu (ji,jj,jk) ) & |
---|
883 | & * ( rhd (ji+1,jj,jk) - rhd (ji,jj,jk) - z1_12 * ( drhou(ji+1,jj,jk) + drhou(ji,jj,jk) ) ) & |
---|
884 | & ) |
---|
885 | |
---|
886 | rho_j(ji,jj,jk) = zcoef0 * ( rhd (ji,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
887 | & * ( fsde3w(ji,jj+1,jk) - fsde3w(ji,jj,jk) ) & |
---|
888 | & - grav* z1_10 * ( & |
---|
889 | & ( drhov (ji,jj+1,jk) - drhov (ji,jj,jk) ) & |
---|
890 | & * ( fsde3w(ji,jj+1,jk) - fsde3w(ji,jj,jk) - z1_12 * ( dzv (ji,jj+1,jk) + dzv (ji,jj,jk) ) ) & |
---|
891 | & - ( dzv (ji,jj+1,jk) - dzv (ji,jj,jk) ) & |
---|
892 | & * ( rhd (ji,jj+1,jk) - rhd (ji,jj,jk) - z1_12 * ( drhov(ji,jj+1,jk) + drhov(ji,jj,jk) ) ) & |
---|
893 | & ) |
---|
894 | |
---|
895 | END DO |
---|
896 | END DO |
---|
897 | END DO |
---|
898 | CALL lbc_lnk(rho_k,'W',1.) |
---|
899 | CALL lbc_lnk(rho_i,'U',1.) |
---|
900 | CALL lbc_lnk(rho_j,'V',1.) |
---|
901 | |
---|
902 | |
---|
903 | ! --------------- |
---|
904 | ! Surface value |
---|
905 | ! --------------- |
---|
906 | DO jj = 2, jpjm1 |
---|
907 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
908 | zhpi(ji,jj,1) = ( rho_k(ji+1,jj ,1) - rho_k(ji,jj,1) - rho_i(ji,jj,1) ) / e1u(ji,jj) |
---|
909 | zhpj(ji,jj,1) = ( rho_k(ji ,jj+1,1) - rho_k(ji,jj,1) - rho_j(ji,jj,1) ) / e2v(ji,jj) |
---|
910 | ! add to the general momentum trend |
---|
911 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
---|
912 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
---|
913 | END DO |
---|
914 | END DO |
---|
915 | |
---|
916 | ! ---------------- |
---|
917 | ! interior value (2=<jk=<jpkm1) |
---|
918 | ! ---------------- |
---|
919 | DO jk = 2, jpkm1 |
---|
920 | DO jj = 2, jpjm1 |
---|
921 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
922 | ! hydrostatic pressure gradient along s-surfaces |
---|
923 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
---|
924 | & + ( ( rho_k(ji+1,jj,jk) - rho_k(ji,jj,jk ) ) & |
---|
925 | & - ( rho_i(ji ,jj,jk) - rho_i(ji,jj,jk-1) ) ) / e1u(ji,jj) |
---|
926 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
---|
927 | & + ( ( rho_k(ji,jj+1,jk) - rho_k(ji,jj,jk ) ) & |
---|
928 | & -( rho_j(ji,jj ,jk) - rho_j(ji,jj,jk-1) ) ) / e2v(ji,jj) |
---|
929 | ! add to the general momentum trend |
---|
930 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
---|
931 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
---|
932 | END DO |
---|
933 | END DO |
---|
934 | END DO |
---|
935 | |
---|
936 | END SUBROUTINE hpg_djc |
---|
937 | |
---|
938 | |
---|
939 | SUBROUTINE hpg_rot( kt ) |
---|
940 | !!--------------------------------------------------------------------- |
---|
941 | !! *** ROUTINE hpg_rot *** |
---|
942 | !! |
---|
943 | !! ** Method : rotated axes scheme (Thiem and Berntsen 2005) |
---|
944 | !! |
---|
945 | !! Reference: Thiem & Berntsen, Ocean Modelling, In press, 2005. |
---|
946 | !! History : |
---|
947 | !! 9.0 ! 05-07 (B.W. An) |
---|
948 | !! 9.0 ! 05-10 (A. Beckmann) adapted to non-equidistant and masked grids |
---|
949 | !!---------------------------------------------------------------------- |
---|
950 | !! * modules used |
---|
951 | USE oce, ONLY : zhpi => ta, & ! use ta as 3D workspace |
---|
952 | & zhpj => sa ! use sa as 3D workspace |
---|
953 | |
---|
954 | !! * Arguments |
---|
955 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
---|
956 | |
---|
957 | !! * Local declarations |
---|
958 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
959 | REAL(wp) :: & |
---|
960 | zforg, zcoef0, zuap, zmskd1, zmskd1m, & |
---|
961 | zfrot , zvap, zmskd2, zmskd2m |
---|
962 | REAL(wp), DIMENSION(jpi,jpj) :: & ! 2D temporary workspace |
---|
963 | zdistr, zsina, zcosa |
---|
964 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: & ! 3D temporary workspace |
---|
965 | zhpiorg, zhpirot, zhpitra, zhpine, & |
---|
966 | zhpjorg, zhpjrot, zhpjtra, zhpjne |
---|
967 | !!---------------------------------------------------------------------- |
---|
968 | |
---|
969 | IF( kt == nit000 ) THEN |
---|
970 | IF(lwp) WRITE(numout,*) |
---|
971 | IF(lwp) WRITE(numout,*) 'dyn:hpg_rot : hydrostatic pressure gradient trend' |
---|
972 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, rotated axes scheme used' |
---|
973 | ENDIF |
---|
974 | |
---|
975 | ! ------------------------------- |
---|
976 | ! Local constant initialization |
---|
977 | ! ------------------------------- |
---|
978 | zcoef0 = - grav * 0.5 |
---|
979 | zforg = 0.95e0 |
---|
980 | zfrot = 1.e0 - zforg |
---|
981 | |
---|
982 | ! inverse of the distance between 2 diagonal T-points (defined at F-point) (here zcoef0/distance) |
---|
983 | zdistr(:,:) = zcoef0 / SQRT( e1f(:,:)*e1f(:,:) + e2f(:,:)*e1f(:,:) ) |
---|
984 | |
---|
985 | ! sinus and cosinus of diagonal angle at F-point |
---|
986 | zsina(:,:) = ATAN2( e2f(:,:), e1f(:,:) ) |
---|
987 | zcosa(:,:) = COS( zsina(:,:) ) |
---|
988 | zsina(:,:) = SIN( zsina(:,:) ) |
---|
989 | |
---|
990 | ! --------------- |
---|
991 | ! Surface value |
---|
992 | ! --------------- |
---|
993 | ! compute and add to the general trend the pressure gradients along the axes |
---|
994 | DO jj = 2, jpjm1 |
---|
995 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
996 | ! hydrostatic pressure gradient along s-surfaces |
---|
997 | zhpiorg(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,1) * rhd(ji+1,jj,1) & |
---|
998 | & - fse3t(ji ,jj,1) * rhd(ji ,jj,1) ) |
---|
999 | zhpjorg(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,1) * rhd(ji,jj+1,1) & |
---|
1000 | & - fse3t(ji,jj ,1) * rhd(ji,jj ,1) ) |
---|
1001 | ! s-coordinate pressure gradient correction |
---|
1002 | zuap = -zcoef0 * ( rhd (ji+1,jj ,1) + rhd (ji,jj,1) ) & |
---|
1003 | & * ( fsdept(ji+1,jj ,1) - fsdept(ji,jj,1) ) / e1u(ji,jj) |
---|
1004 | zvap = -zcoef0 * ( rhd (ji ,jj+1,1) + rhd (ji,jj,1) ) & |
---|
1005 | & * ( fsdept(ji ,jj+1,1) - fsdept(ji,jj,1) ) / e2v(ji,jj) |
---|
1006 | ! add to the general momentum trend |
---|
1007 | ua(ji,jj,1) = ua(ji,jj,1) + zforg * ( zhpiorg(ji,jj,1) + zuap ) |
---|
1008 | va(ji,jj,1) = va(ji,jj,1) + zforg * ( zhpjorg(ji,jj,1) + zvap ) |
---|
1009 | END DO |
---|
1010 | END DO |
---|
1011 | |
---|
1012 | ! compute the pressure gradients in the diagonal directions |
---|
1013 | DO jj = 1, jpjm1 |
---|
1014 | DO ji = 1, fs_jpim1 ! vector opt. |
---|
1015 | zmskd1 = tmask(ji+1,jj+1,1) * tmask(ji ,jj,1) ! mask in the 1st diagnonal |
---|
1016 | zmskd2 = tmask(ji ,jj+1,1) * tmask(ji+1,jj,1) ! mask in the 2nd diagnonal |
---|
1017 | ! hydrostatic pressure gradient along s-surfaces |
---|
1018 | zhpitra(ji,jj,1) = zdistr(ji,jj) * zmskd1 * ( fse3t(ji+1,jj+1,1) * rhd(ji+1,jj+1,1) & |
---|
1019 | & - fse3t(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
1020 | zhpjtra(ji,jj,1) = zdistr(ji,jj) * zmskd2 * ( fse3t(ji ,jj+1,1) * rhd(ji ,jj+1,1) & |
---|
1021 | & - fse3t(ji+1,jj ,1) * rhd(ji+1,jj ,1) ) |
---|
1022 | ! s-coordinate pressure gradient correction |
---|
1023 | zuap = -zdistr(ji,jj) * zmskd1 * ( rhd (ji+1,jj+1,1) + rhd (ji ,jj,1) ) & |
---|
1024 | & * ( fsdept(ji+1,jj+1,1) - fsdept(ji ,jj,1) ) |
---|
1025 | zvap = -zdistr(ji,jj) * zmskd2 * ( rhd (ji ,jj+1,1) + rhd (ji+1,jj,1) ) & |
---|
1026 | & * ( fsdept(ji ,jj+1,1) - fsdept(ji+1,jj,1) ) |
---|
1027 | ! back rotation |
---|
1028 | zhpine(ji,jj,1) = zcosa(ji,jj) * ( zhpitra(ji,jj,1) + zuap ) & |
---|
1029 | & - zsina(ji,jj) * ( zhpjtra(ji,jj,1) + zvap ) |
---|
1030 | zhpjne(ji,jj,1) = zsina(ji,jj) * ( zhpitra(ji,jj,1) + zuap ) & |
---|
1031 | & + zcosa(ji,jj) * ( zhpjtra(ji,jj,1) + zvap ) |
---|
1032 | END DO |
---|
1033 | END DO |
---|
1034 | |
---|
1035 | ! interpolate and add to the general trend the diagonal gradient |
---|
1036 | DO jj = 2, jpjm1 |
---|
1037 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
1038 | ! averaging |
---|
1039 | zhpirot(ji,jj,1) = 0.5 * ( zhpine(ji,jj,1) + zhpine(ji ,jj-1,1) ) |
---|
1040 | zhpjrot(ji,jj,1) = 0.5 * ( zhpjne(ji,jj,1) + zhpjne(ji-1,jj ,1) ) |
---|
1041 | ! add to the general momentum trend |
---|
1042 | ua(ji,jj,1) = ua(ji,jj,1) + zfrot * zhpirot(ji,jj,1) |
---|
1043 | va(ji,jj,1) = va(ji,jj,1) + zfrot * zhpjrot(ji,jj,1) |
---|
1044 | END DO |
---|
1045 | END DO |
---|
1046 | |
---|
1047 | ! ----------------- |
---|
1048 | ! 2. interior value (2=<jk=<jpkm1) |
---|
1049 | ! ----------------- |
---|
1050 | ! compute and add to the general trend the pressure gradients along the axes |
---|
1051 | DO jk = 2, jpkm1 |
---|
1052 | DO jj = 2, jpjm1 |
---|
1053 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
1054 | ! hydrostatic pressure gradient along s-surfaces |
---|
1055 | zhpiorg(ji,jj,jk) = zhpiorg(ji,jj,jk-1) & |
---|
1056 | & + zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,jk ) * rhd(ji+1,jj,jk ) & |
---|
1057 | & - fse3t(ji ,jj,jk ) * rhd(ji ,jj,jk ) & |
---|
1058 | & + fse3t(ji+1,jj,jk-1) * rhd(ji+1,jj,jk-1) & |
---|
1059 | & - fse3t(ji ,jj,jk-1) * rhd(ji ,jj,jk-1) ) |
---|
1060 | zhpjorg(ji,jj,jk) = zhpjorg(ji,jj,jk-1) & |
---|
1061 | & + zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,jk ) * rhd(ji,jj+1,jk ) & |
---|
1062 | & - fse3t(ji,jj ,jk ) * rhd(ji,jj, jk ) & |
---|
1063 | & + fse3t(ji,jj+1,jk-1) * rhd(ji,jj+1,jk-1) & |
---|
1064 | & - fse3t(ji,jj ,jk-1) * rhd(ji,jj, jk-1) ) |
---|
1065 | ! s-coordinate pressure gradient correction |
---|
1066 | zuap = - zcoef0 * ( rhd (ji+1,jj ,jk) + rhd (ji,jj,jk) ) & |
---|
1067 | & * ( fsdept(ji+1,jj ,jk) - fsdept(ji,jj,jk) ) / e1u(ji,jj) |
---|
1068 | zvap = - zcoef0 * ( rhd (ji ,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
1069 | & * ( fsdept(ji ,jj+1,jk) - fsdept(ji,jj,jk) ) / e2v(ji,jj) |
---|
1070 | ! add to the general momentum trend |
---|
1071 | ua(ji,jj,jk) = ua(ji,jj,jk) + zforg*( zhpiorg(ji,jj,jk) + zuap ) |
---|
1072 | va(ji,jj,jk) = va(ji,jj,jk) + zforg*( zhpjorg(ji,jj,jk) + zvap ) |
---|
1073 | END DO |
---|
1074 | END DO |
---|
1075 | END DO |
---|
1076 | |
---|
1077 | ! compute the pressure gradients in the diagonal directions |
---|
1078 | DO jk = 2, jpkm1 |
---|
1079 | DO jj = 1, jpjm1 |
---|
1080 | DO ji = 1, fs_jpim1 ! vector opt. |
---|
1081 | zmskd1 = tmask(ji+1,jj+1,jk ) * tmask(ji ,jj,jk ) ! level jk mask in the 1st diagnonal |
---|
1082 | zmskd1m = tmask(ji+1,jj+1,jk-1) * tmask(ji ,jj,jk-1) ! level jk-1 " " |
---|
1083 | zmskd2 = tmask(ji ,jj+1,jk ) * tmask(ji+1,jj,jk ) ! level jk mask in the 2nd diagnonal |
---|
1084 | zmskd2m = tmask(ji ,jj+1,jk-1) * tmask(ji+1,jj,jk-1) ! level jk-1 " " |
---|
1085 | ! hydrostatic pressure gradient along s-surfaces |
---|
1086 | zhpitra(ji,jj,jk) = zhpitra(ji,jj,jk-1) & |
---|
1087 | & + zdistr(ji,jj) * zmskd1 * ( fse3t(ji+1,jj+1,jk ) * rhd(ji+1,jj+1,jk) & |
---|
1088 | & -fse3t(ji ,jj ,jk ) * rhd(ji ,jj ,jk) ) & |
---|
1089 | & + zdistr(ji,jj) * zmskd1m * ( fse3t(ji+1,jj+1,jk-1) * rhd(ji+1,jj+1,jk-1) & |
---|
1090 | & -fse3t(ji ,jj ,jk-1) * rhd(ji ,jj ,jk-1) ) |
---|
1091 | zhpjtra(ji,jj,jk) = zhpjtra(ji,jj,jk-1) & |
---|
1092 | & + zdistr(ji,jj) * zmskd2 * ( fse3t(ji ,jj+1,jk ) * rhd(ji ,jj+1,jk) & |
---|
1093 | & -fse3t(ji+1,jj ,jk ) * rhd(ji+1,jj, jk) ) & |
---|
1094 | & + zdistr(ji,jj) * zmskd2m * ( fse3t(ji ,jj+1,jk-1) * rhd(ji ,jj+1,jk-1) & |
---|
1095 | & -fse3t(ji+1,jj ,jk-1) * rhd(ji+1,jj, jk-1) ) |
---|
1096 | ! s-coordinate pressure gradient correction |
---|
1097 | zuap = - zdistr(ji,jj) * zmskd1 * ( rhd (ji+1,jj+1,jk) + rhd (ji ,jj,jk) ) & |
---|
1098 | & * ( fsdept(ji+1,jj+1,jk) - fsdept(ji ,jj,jk) ) |
---|
1099 | zvap = - zdistr(ji,jj) * zmskd2 * ( rhd (ji ,jj+1,jk) + rhd (ji+1,jj,jk) ) & |
---|
1100 | & * ( fsdept(ji ,jj+1,jk) - fsdept(ji+1,jj,jk) ) |
---|
1101 | ! back rotation |
---|
1102 | zhpine(ji,jj,jk) = zcosa(ji,jj) * ( zhpitra(ji,jj,jk) + zuap ) & |
---|
1103 | & - zsina(ji,jj) * ( zhpjtra(ji,jj,jk) + zvap ) |
---|
1104 | zhpjne(ji,jj,jk) = zsina(ji,jj) * ( zhpitra(ji,jj,jk) + zuap ) & |
---|
1105 | & + zcosa(ji,jj) * ( zhpjtra(ji,jj,jk) + zvap ) |
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1106 | END DO |
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1107 | END DO |
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1108 | END DO |
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1109 | |
---|
1110 | ! interpolate and add to the general trend |
---|
1111 | DO jk = 2, jpkm1 |
---|
1112 | DO jj = 2, jpjm1 |
---|
1113 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
1114 | ! averaging |
---|
1115 | zhpirot(ji,jj,jk) = 0.5 * ( zhpine(ji,jj,jk) + zhpine(ji ,jj-1,jk) ) |
---|
1116 | zhpjrot(ji,jj,jk) = 0.5 * ( zhpjne(ji,jj,jk) + zhpjne(ji-1,jj ,jk) ) |
---|
1117 | ! add to the general momentum trend |
---|
1118 | ua(ji,jj,jk) = ua(ji,jj,jk) + zfrot * zhpirot(ji,jj,jk) |
---|
1119 | va(ji,jj,jk) = va(ji,jj,jk) + zfrot * zhpjrot(ji,jj,jk) |
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1120 | END DO |
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1121 | END DO |
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1122 | END DO |
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1123 | |
---|
1124 | END SUBROUTINE hpg_rot |
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1125 | |
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1126 | !!====================================================================== |
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1127 | END MODULE dynhpg |
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