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 | !! History : OPA ! 1987-09 (P. Andrich, M.-A. Foujols) hpg_zco: Original code |
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7 | !! 5.0 ! 1991-11 (G. Madec) |
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8 | !! 7.0 ! 1996-01 (G. Madec) hpg_sco: Original code for s-coordinates |
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9 | !! 8.0 ! 1997-05 (G. Madec) split dynber into dynkeg and dynhpg |
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10 | !! 8.5 ! 2002-07 (G. Madec) F90: Free form and module |
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11 | !! 8.5 ! 2002-08 (A. Bozec) hpg_zps: Original code |
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12 | !! NEMO 1.0 ! 2005-10 (A. Beckmann, B.W. An) various s-coordinate options |
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13 | !! ! Original code for hpg_ctl, hpg_hel hpg_wdj, hpg_djc, hpg_rot |
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14 | !! - ! 2005-11 (G. Madec) style & small optimisation |
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15 | !! 3.3 ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase |
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16 | !!---------------------------------------------------------------------- |
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17 | |
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18 | !!---------------------------------------------------------------------- |
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19 | !! dyn_hpg : update the momentum trend with the now horizontal |
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20 | !! gradient of the hydrostatic pressure |
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21 | !! dyn_hpg_init : initialisation and control of options |
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22 | !! hpg_zco : z-coordinate scheme |
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23 | !! hpg_zps : z-coordinate plus partial steps (interpolation) |
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24 | !! hpg_sco : s-coordinate (standard jacobian formulation) |
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25 | !! hpg_hel : s-coordinate (helsinki modification) |
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26 | !! hpg_wdj : s-coordinate (weighted density jacobian) |
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27 | !! hpg_djc : s-coordinate (Density Jacobian with Cubic polynomial) |
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28 | !! hpg_rot : s-coordinate (ROTated axes scheme) |
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29 | !!---------------------------------------------------------------------- |
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30 | USE oce ! ocean dynamics and tracers |
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31 | USE dom_oce ! ocean space and time domain |
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32 | USE phycst ! physical constants |
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33 | USE in_out_manager ! I/O manager |
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34 | USE trdmod ! ocean dynamics trends |
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35 | USE trdmod_oce ! ocean variables trends |
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36 | USE prtctl ! Print control |
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37 | USE lbclnk ! lateral boundary condition |
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38 | |
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39 | IMPLICIT NONE |
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40 | PRIVATE |
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41 | |
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42 | PUBLIC dyn_hpg ! routine called by step module |
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43 | PUBLIC dyn_hpg_init ! routine called by opa module |
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44 | |
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45 | ! !!* Namelist namdyn_hpg : hydrostatic pressure gradient |
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46 | LOGICAL , PUBLIC :: ln_hpg_zco = .TRUE. !: z-coordinate - full steps |
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47 | LOGICAL , PUBLIC :: ln_hpg_zps = .FALSE. !: z-coordinate - partial steps (interpolation) |
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48 | LOGICAL , PUBLIC :: ln_hpg_sco = .FALSE. !: s-coordinate (standard jacobian formulation) |
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49 | LOGICAL , PUBLIC :: ln_hpg_hel = .FALSE. !: s-coordinate (helsinki modification) |
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50 | LOGICAL , PUBLIC :: ln_hpg_wdj = .FALSE. !: s-coordinate (weighted density jacobian) |
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51 | LOGICAL , PUBLIC :: ln_hpg_djc = .FALSE. !: s-coordinate (Density Jacobian with Cubic polynomial) |
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52 | LOGICAL , PUBLIC :: ln_hpg_rot = .FALSE. !: s-coordinate (ROTated axes scheme) |
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53 | REAL(wp), PUBLIC :: rn_gamma = 0._wp !: weighting coefficient |
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54 | LOGICAL , PUBLIC :: ln_dynhpg_imp = .FALSE. !: semi-implicite hpg flag |
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55 | |
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56 | INTEGER :: nhpg = 0 ! = 0 to 6, type of pressure gradient scheme used ! (deduced from ln_hpg_... flags) |
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57 | |
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58 | !! * Substitutions |
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59 | # include "domzgr_substitute.h90" |
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60 | # include "vectopt_loop_substitute.h90" |
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61 | !!---------------------------------------------------------------------- |
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62 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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63 | !! $Id$ |
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64 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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65 | !!---------------------------------------------------------------------- |
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66 | CONTAINS |
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67 | |
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68 | SUBROUTINE dyn_hpg( kt ) |
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69 | !!--------------------------------------------------------------------- |
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70 | !! *** ROUTINE dyn_hpg *** |
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71 | !! |
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72 | !! ** Method : Call the hydrostatic pressure gradient routine |
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73 | !! using the scheme defined in the namelist |
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74 | !! |
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75 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
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76 | !! - Save the trend (l_trddyn=T) |
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77 | !!---------------------------------------------------------------------- |
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78 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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79 | !! |
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80 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: ztrdu, ztrdv ! 3D temporary workspace |
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81 | !!---------------------------------------------------------------------- |
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82 | ! |
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83 | IF( l_trddyn ) THEN ! Temporary saving of ua and va trends (l_trddyn) |
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84 | ztrdu(:,:,:) = ua(:,:,:) |
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85 | ztrdv(:,:,:) = va(:,:,:) |
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86 | ENDIF |
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87 | ! |
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88 | SELECT CASE ( nhpg ) ! Hydrastatic pressure gradient computation |
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89 | CASE ( 0 ) ; CALL hpg_zco ( kt ) ! z-coordinate |
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90 | CASE ( 1 ) ; CALL hpg_zps ( kt ) ! z-coordinate plus partial steps (interpolation) |
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91 | CASE ( 2 ) ; CALL hpg_sco ( kt ) ! s-coordinate (standard jacobian formulation) |
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92 | CASE ( 3 ) ; CALL hpg_hel ( kt ) ! s-coordinate (helsinki modification) |
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93 | CASE ( 4 ) ; CALL hpg_wdj ( kt ) ! s-coordinate (weighted density jacobian) |
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94 | CASE ( 5 ) ; CALL hpg_djc ( kt ) ! s-coordinate (Density Jacobian with Cubic polynomial) |
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95 | CASE ( 6 ) ; CALL hpg_rot ( kt ) ! s-coordinate (ROTated axes scheme) |
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96 | END SELECT |
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97 | ! |
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98 | IF( l_trddyn ) THEN ! save the hydrostatic pressure gradient trends for momentum trend diagnostics |
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99 | ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) |
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100 | ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) |
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101 | CALL trd_mod( ztrdu, ztrdv, jpdyn_trd_hpg, 'DYN', kt ) |
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102 | ENDIF |
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103 | ! |
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104 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' hpg - Ua: ', mask1=umask, & |
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105 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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106 | ! |
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107 | END SUBROUTINE dyn_hpg |
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108 | |
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109 | |
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110 | SUBROUTINE dyn_hpg_init |
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111 | !!---------------------------------------------------------------------- |
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112 | !! *** ROUTINE dyn_hpg_init *** |
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113 | !! |
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114 | !! ** Purpose : initializations for the hydrostatic pressure gradient |
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115 | !! computation and consistency control |
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116 | !! |
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117 | !! ** Action : Read the namelist namdyn_hpg and check the consistency |
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118 | !! with the type of vertical coordinate used (zco, zps, sco) |
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119 | !!---------------------------------------------------------------------- |
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120 | INTEGER :: ioptio = 0 ! temporary integer |
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121 | !! |
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122 | NAMELIST/namdyn_hpg/ ln_hpg_zco, ln_hpg_zps, ln_hpg_sco, ln_hpg_hel, & |
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123 | & ln_hpg_wdj, ln_hpg_djc, ln_hpg_rot, rn_gamma , ln_dynhpg_imp |
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124 | !!---------------------------------------------------------------------- |
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125 | ! |
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126 | REWIND( numnam ) ! Read Namelist namdyn_hpg |
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127 | READ ( numnam, namdyn_hpg ) |
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128 | ! |
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129 | IF(lwp) THEN ! Control print |
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130 | WRITE(numout,*) |
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131 | WRITE(numout,*) 'dyn_hpg_init : hydrostatic pressure gradient initialisation' |
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132 | WRITE(numout,*) '~~~~~~~~~~~~' |
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133 | WRITE(numout,*) ' Namelist namdyn_hpg : choice of hpg scheme' |
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134 | WRITE(numout,*) ' z-coord. - full steps ln_hpg_zco = ', ln_hpg_zco |
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135 | WRITE(numout,*) ' z-coord. - partial steps (interpolation) ln_hpg_zps = ', ln_hpg_zps |
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136 | WRITE(numout,*) ' s-coord. (standard jacobian formulation) ln_hpg_sco = ', ln_hpg_sco |
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137 | WRITE(numout,*) ' s-coord. (helsinki modification) ln_hpg_hel = ', ln_hpg_hel |
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138 | WRITE(numout,*) ' s-coord. (weighted density jacobian) ln_hpg_wdj = ', ln_hpg_wdj |
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139 | WRITE(numout,*) ' s-coord. (Density Jacobian: Cubic polynomial) ln_hpg_djc = ', ln_hpg_djc |
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140 | WRITE(numout,*) ' s-coord. (ROTated axes scheme) ln_hpg_rot = ', ln_hpg_rot |
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141 | WRITE(numout,*) ' weighting coeff. (wdj scheme) rn_gamma = ', rn_gamma |
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142 | WRITE(numout,*) ' time stepping: centered (F) or semi-implicit (T) ln_dynhpg_imp = ', ln_dynhpg_imp |
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143 | ENDIF |
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144 | ! |
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145 | IF( lk_vvl .AND. .NOT. ln_hpg_sco ) & |
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146 | & CALL ctl_stop( 'dyn_hpg_init : variable volume key_vvl require the standard jacobian formulation hpg_sco') |
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147 | ! |
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148 | ! ! Set nhpg from ln_hpg_... flags |
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149 | IF( ln_hpg_zco ) nhpg = 0 |
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150 | IF( ln_hpg_zps ) nhpg = 1 |
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151 | IF( ln_hpg_sco ) nhpg = 2 |
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152 | IF( ln_hpg_hel ) nhpg = 3 |
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153 | IF( ln_hpg_wdj ) nhpg = 4 |
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154 | IF( ln_hpg_djc ) nhpg = 5 |
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155 | IF( ln_hpg_rot ) nhpg = 6 |
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156 | ! |
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157 | ! ! Consitency check |
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158 | ioptio = 0 |
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159 | IF( ln_hpg_zco ) ioptio = ioptio + 1 |
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160 | IF( ln_hpg_zps ) ioptio = ioptio + 1 |
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161 | IF( ln_hpg_sco ) ioptio = ioptio + 1 |
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162 | IF( ln_hpg_hel ) ioptio = ioptio + 1 |
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163 | IF( ln_hpg_wdj ) ioptio = ioptio + 1 |
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164 | IF( ln_hpg_djc ) ioptio = ioptio + 1 |
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165 | IF( ln_hpg_rot ) ioptio = ioptio + 1 |
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166 | IF ( ioptio /= 1 ) CALL ctl_stop( ' NO or several hydrostatic pressure gradient options used' ) |
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167 | ! |
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168 | END SUBROUTINE dyn_hpg_init |
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169 | |
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170 | |
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171 | SUBROUTINE hpg_zco( kt ) |
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172 | !!--------------------------------------------------------------------- |
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173 | !! *** ROUTINE hpg_zco *** |
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174 | !! |
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175 | !! ** Method : z-coordinate case, levels are horizontal surfaces. |
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176 | !! The now hydrostatic pressure gradient at a given level, jk, |
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177 | !! is computed by taking the vertical integral of the in-situ |
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178 | !! density gradient along the model level from the suface to that |
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179 | !! level: zhpi = grav ..... |
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180 | !! zhpj = grav ..... |
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181 | !! add it to the general momentum trend (ua,va). |
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182 | !! ua = ua - 1/e1u * zhpi |
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183 | !! va = va - 1/e2v * zhpj |
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184 | !! |
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185 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
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186 | !!---------------------------------------------------------------------- |
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187 | USE oce, ONLY : zhpi => ta ! use ta as 3D workspace |
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188 | USE oce, ONLY : zhpj => sa ! use sa as 3D workspace |
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189 | !! |
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190 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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191 | !! |
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192 | INTEGER :: ji, jj, jk ! dummy loop indices |
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193 | REAL(wp) :: zcoef0, zcoef1 ! temporary scalars |
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194 | !!---------------------------------------------------------------------- |
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195 | |
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196 | IF( kt == nit000 ) THEN |
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197 | IF(lwp) WRITE(numout,*) |
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198 | IF(lwp) WRITE(numout,*) 'dyn:hpg_zco : hydrostatic pressure gradient trend' |
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199 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ z-coordinate case ' |
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200 | ENDIF |
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201 | |
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202 | ! Local constant initialization |
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203 | zcoef0 = - grav * 0.5_wp |
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204 | |
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205 | ! Surface value |
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206 | DO jj = 2, jpjm1 |
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207 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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208 | zcoef1 = zcoef0 * fse3w(ji,jj,1) |
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209 | ! hydrostatic pressure gradient |
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210 | zhpi(ji,jj,1) = zcoef1 * ( rhd(ji+1,jj,1) - rhd(ji,jj,1) ) / e1u(ji,jj) |
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211 | zhpj(ji,jj,1) = zcoef1 * ( rhd(ji,jj+1,1) - rhd(ji,jj,1) ) / e2v(ji,jj) |
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212 | ! add to the general momentum trend |
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213 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
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214 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
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215 | END DO |
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216 | END DO |
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217 | ! |
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218 | ! interior value (2=<jk=<jpkm1) |
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219 | DO jk = 2, jpkm1 |
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220 | DO jj = 2, jpjm1 |
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221 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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222 | zcoef1 = zcoef0 * fse3w(ji,jj,jk) |
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223 | ! hydrostatic pressure gradient |
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224 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
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225 | & + zcoef1 * ( ( rhd(ji+1,jj,jk)+rhd(ji+1,jj,jk-1) ) & |
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226 | & - ( rhd(ji ,jj,jk)+rhd(ji ,jj,jk-1) ) ) / e1u(ji,jj) |
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227 | |
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228 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
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229 | & + zcoef1 * ( ( rhd(ji,jj+1,jk)+rhd(ji,jj+1,jk-1) ) & |
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230 | & - ( rhd(ji,jj, jk)+rhd(ji,jj ,jk-1) ) ) / e2v(ji,jj) |
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231 | ! add to the general momentum trend |
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232 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
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233 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
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234 | END DO |
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235 | END DO |
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236 | END DO |
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237 | ! |
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238 | END SUBROUTINE hpg_zco |
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239 | |
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240 | |
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241 | SUBROUTINE hpg_zps( kt ) |
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242 | !!--------------------------------------------------------------------- |
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243 | !! *** ROUTINE hpg_zps *** |
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244 | !! |
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245 | !! ** Method : z-coordinate plus partial steps case. blahblah... |
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246 | !! |
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247 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
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248 | !!---------------------------------------------------------------------- |
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249 | USE oce, ONLY : zhpi => ta ! use ta as 3D workspace |
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250 | USE oce, ONLY : zhpj => sa ! use sa as 3D workspace |
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251 | !! |
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252 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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253 | !! |
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254 | INTEGER :: ji, jj, jk ! dummy loop indices |
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255 | INTEGER :: iku, ikv ! temporary integers |
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256 | REAL(wp) :: zcoef0, zcoef1, zcoef2, zcoef3 ! temporary scalars |
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257 | !!---------------------------------------------------------------------- |
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258 | |
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259 | IF( kt == nit000 ) THEN |
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260 | IF(lwp) WRITE(numout,*) |
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261 | IF(lwp) WRITE(numout,*) 'dyn:hpg_zps : hydrostatic pressure gradient trend' |
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262 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ z-coordinate with partial steps - vector optimization' |
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263 | ENDIF |
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264 | |
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265 | ! Local constant initialization |
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266 | zcoef0 = - grav * 0.5_wp |
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267 | |
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268 | ! Surface value (also valid in partial step case) |
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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 | DO jk = 2, jpkm1 |
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283 | DO jj = 2, jpjm1 |
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284 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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285 | zcoef1 = zcoef0 * fse3w(ji,jj,jk) |
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286 | ! hydrostatic pressure gradient |
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287 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
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288 | & + zcoef1 * ( ( rhd(ji+1,jj,jk) + rhd(ji+1,jj,jk-1) ) & |
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289 | & - ( rhd(ji ,jj,jk) + rhd(ji ,jj,jk-1) ) ) / e1u(ji,jj) |
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290 | |
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291 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
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292 | & + zcoef1 * ( ( rhd(ji,jj+1,jk) + rhd(ji,jj+1,jk-1) ) & |
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293 | & - ( rhd(ji,jj, jk) + rhd(ji,jj ,jk-1) ) ) / e2v(ji,jj) |
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294 | ! add to the general momentum trend |
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295 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
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296 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
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297 | END DO |
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298 | END DO |
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299 | END DO |
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300 | |
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301 | ! partial steps correction at the last level (use gru & grv computed in zpshde.F90) |
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302 | # if defined key_vectopt_loop |
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303 | jj = 1 |
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304 | DO ji = jpi+2, jpij-jpi-1 ! vector opt. (forced unrolling) |
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305 | # else |
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306 | DO jj = 2, jpjm1 |
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307 | DO ji = 2, jpim1 |
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308 | # endif |
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309 | iku = mbku(ji,jj) |
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310 | ikv = mbkv(ji,jj) |
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311 | zcoef2 = zcoef0 * MIN( fse3w(ji,jj,iku), fse3w(ji+1,jj ,iku) ) |
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312 | zcoef3 = zcoef0 * MIN( fse3w(ji,jj,ikv), fse3w(ji ,jj+1,ikv) ) |
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313 | IF( iku > 1 ) THEN ! on i-direction (level 2 or more) |
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314 | ua (ji,jj,iku) = ua(ji,jj,iku) - zhpi(ji,jj,iku) ! subtract old value |
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315 | zhpi(ji,jj,iku) = zhpi(ji,jj,iku-1) & ! compute the new one |
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316 | & + zcoef2 * ( rhd(ji+1,jj,iku-1) - rhd(ji,jj,iku-1) + gru(ji,jj) ) / e1u(ji,jj) |
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317 | ua (ji,jj,iku) = ua(ji,jj,iku) + zhpi(ji,jj,iku) ! add the new one to the general momentum trend |
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318 | ENDIF |
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319 | IF( ikv > 1 ) THEN ! on j-direction (level 2 or more) |
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320 | va (ji,jj,ikv) = va(ji,jj,ikv) - zhpj(ji,jj,ikv) ! subtract old value |
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321 | zhpj(ji,jj,ikv) = zhpj(ji,jj,ikv-1) & ! compute the new one |
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322 | & + zcoef3 * ( rhd(ji,jj+1,ikv-1) - rhd(ji,jj,ikv-1) + grv(ji,jj) ) / e2v(ji,jj) |
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323 | va (ji,jj,ikv) = va(ji,jj,ikv) + zhpj(ji,jj,ikv) ! add the new one to the general momentum trend |
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324 | ENDIF |
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325 | # if ! defined key_vectopt_loop |
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326 | END DO |
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327 | # endif |
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328 | END DO |
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329 | ! |
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330 | END SUBROUTINE hpg_zps |
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331 | |
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332 | |
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333 | SUBROUTINE hpg_sco( kt ) |
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334 | !!--------------------------------------------------------------------- |
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335 | !! *** ROUTINE hpg_sco *** |
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336 | !! |
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337 | !! ** Method : s-coordinate case. Jacobian scheme. |
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338 | !! The now hydrostatic pressure gradient at a given level, jk, |
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339 | !! is computed by taking the vertical integral of the in-situ |
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340 | !! density gradient along the model level from the suface to that |
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341 | !! level. s-coordinates (ln_sco): a corrective term is added |
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342 | !! to the horizontal pressure gradient : |
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343 | !! zhpi = grav ..... + 1/e1u mi(rhd) di[ grav dep3w ] |
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344 | !! zhpj = grav ..... + 1/e2v mj(rhd) dj[ grav dep3w ] |
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345 | !! add it to the general momentum trend (ua,va). |
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346 | !! ua = ua - 1/e1u * zhpi |
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347 | !! va = va - 1/e2v * zhpj |
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348 | !! |
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349 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
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350 | !!---------------------------------------------------------------------- |
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351 | USE oce, ONLY : zhpi => ta ! use ta as 3D workspace |
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352 | USE oce, ONLY : zhpj => sa ! use sa as 3D workspace |
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353 | !! |
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354 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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355 | !! |
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356 | INTEGER :: ji, jj, jk ! dummy loop indices |
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357 | REAL(wp) :: zcoef0, zuap, zvap, znad ! temporary scalars |
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358 | !!---------------------------------------------------------------------- |
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359 | |
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360 | IF( kt == nit000 ) THEN |
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361 | IF(lwp) WRITE(numout,*) |
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362 | IF(lwp) WRITE(numout,*) 'dyn:hpg_sco : hydrostatic pressure gradient trend' |
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363 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, OPA original scheme used' |
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364 | ENDIF |
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365 | |
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366 | ! Local constant initialization |
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367 | zcoef0 = - grav * 0.5_wp |
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368 | ! To use density and not density anomaly |
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369 | IF ( lk_vvl ) THEN ; znad = 1._wp ! Variable volume |
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370 | ELSE ; znad = 0._wp ! Fixed volume |
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371 | ENDIF |
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372 | |
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373 | ! Surface value |
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374 | DO jj = 2, jpjm1 |
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375 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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376 | ! hydrostatic pressure gradient along s-surfaces |
---|
377 | zhpi(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3w(ji+1,jj ,1) * ( znad + rhd(ji+1,jj ,1) ) & |
---|
378 | & - fse3w(ji ,jj ,1) * ( znad + rhd(ji ,jj ,1) ) ) |
---|
379 | zhpj(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3w(ji ,jj+1,1) * ( znad + rhd(ji ,jj+1,1) ) & |
---|
380 | & - fse3w(ji ,jj ,1) * ( znad + rhd(ji ,jj ,1) ) ) |
---|
381 | ! s-coordinate pressure gradient correction |
---|
382 | zuap = -zcoef0 * ( rhd (ji+1,jj,1) + rhd (ji,jj,1) + 2._wp * znad ) & |
---|
383 | & * ( fsde3w(ji+1,jj,1) - fsde3w(ji,jj,1) ) / e1u(ji,jj) |
---|
384 | zvap = -zcoef0 * ( rhd (ji,jj+1,1) + rhd (ji,jj,1) + 2._wp * znad ) & |
---|
385 | & * ( fsde3w(ji,jj+1,1) - fsde3w(ji,jj,1) ) / e2v(ji,jj) |
---|
386 | ! add to the general momentum trend |
---|
387 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) + zuap |
---|
388 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) + zvap |
---|
389 | END DO |
---|
390 | END DO |
---|
391 | |
---|
392 | ! interior value (2=<jk=<jpkm1) |
---|
393 | DO jk = 2, jpkm1 |
---|
394 | DO jj = 2, jpjm1 |
---|
395 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
396 | ! hydrostatic pressure gradient along s-surfaces |
---|
397 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) + zcoef0 / e1u(ji,jj) & |
---|
398 | & * ( fse3w(ji+1,jj,jk) * ( rhd(ji+1,jj,jk) + rhd(ji+1,jj,jk-1) + 2*znad ) & |
---|
399 | & - fse3w(ji ,jj,jk) * ( rhd(ji ,jj,jk) + rhd(ji ,jj,jk-1) + 2*znad ) ) |
---|
400 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) + zcoef0 / e2v(ji,jj) & |
---|
401 | & * ( fse3w(ji,jj+1,jk) * ( rhd(ji,jj+1,jk) + rhd(ji,jj+1,jk-1) + 2*znad ) & |
---|
402 | & - fse3w(ji,jj ,jk) * ( rhd(ji,jj, jk) + rhd(ji,jj ,jk-1) + 2*znad ) ) |
---|
403 | ! s-coordinate pressure gradient correction |
---|
404 | zuap = -zcoef0 * ( rhd (ji+1,jj ,jk) + rhd (ji,jj,jk) + 2._wp * znad ) & |
---|
405 | & * ( fsde3w(ji+1,jj ,jk) - fsde3w(ji,jj,jk) ) / e1u(ji,jj) |
---|
406 | zvap = -zcoef0 * ( rhd (ji ,jj+1,jk) + rhd (ji,jj,jk) + 2._wp * znad ) & |
---|
407 | & * ( fsde3w(ji ,jj+1,jk) - fsde3w(ji,jj,jk) ) / e2v(ji,jj) |
---|
408 | ! add to the general momentum trend |
---|
409 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) + zuap |
---|
410 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) + zvap |
---|
411 | END DO |
---|
412 | END DO |
---|
413 | END DO |
---|
414 | ! |
---|
415 | END SUBROUTINE hpg_sco |
---|
416 | |
---|
417 | |
---|
418 | SUBROUTINE hpg_hel( kt ) |
---|
419 | !!--------------------------------------------------------------------- |
---|
420 | !! *** ROUTINE hpg_hel *** |
---|
421 | !! |
---|
422 | !! ** Method : s-coordinate case. |
---|
423 | !! The now hydrostatic pressure gradient at a given level |
---|
424 | !! jk is computed by taking the vertical integral of the in-situ |
---|
425 | !! density gradient along the model level from the suface to that |
---|
426 | !! level. s-coordinates (ln_sco): a corrective term is added |
---|
427 | !! to the horizontal pressure gradient : |
---|
428 | !! zhpi = grav ..... + 1/e1u mi(rhd) di[ grav dep3w ] |
---|
429 | !! zhpj = grav ..... + 1/e2v mj(rhd) dj[ grav dep3w ] |
---|
430 | !! add it to the general momentum trend (ua,va). |
---|
431 | !! ua = ua - 1/e1u * zhpi |
---|
432 | !! va = va - 1/e2v * zhpj |
---|
433 | !! |
---|
434 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
435 | !! - Save the trend (l_trddyn=T) |
---|
436 | !!---------------------------------------------------------------------- |
---|
437 | USE oce, ONLY : zhpi => ta ! use ta as 3D workspace |
---|
438 | USE oce, ONLY : zhpj => sa ! use sa as 3D workspace |
---|
439 | !! |
---|
440 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
441 | !! |
---|
442 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
443 | REAL(wp) :: zcoef0, zuap, zvap ! temporary scalars |
---|
444 | !!---------------------------------------------------------------------- |
---|
445 | |
---|
446 | IF( kt == nit000 ) THEN |
---|
447 | IF(lwp) WRITE(numout,*) |
---|
448 | IF(lwp) WRITE(numout,*) 'dyn:hpg_hel : hydrostatic pressure gradient trend' |
---|
449 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, helsinki modified scheme' |
---|
450 | ENDIF |
---|
451 | |
---|
452 | ! Local constant initialization |
---|
453 | zcoef0 = - grav * 0.5_wp |
---|
454 | |
---|
455 | ! Surface value |
---|
456 | DO jj = 2, jpjm1 |
---|
457 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
458 | ! hydrostatic pressure gradient along s-surfaces |
---|
459 | zhpi(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj ,1) * rhd(ji+1,jj ,1) & |
---|
460 | & - fse3t(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
461 | zhpj(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3t(ji ,jj+1,1) * rhd(ji ,jj+1,1) & |
---|
462 | & - fse3t(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
463 | ! s-coordinate pressure gradient correction |
---|
464 | zuap = -zcoef0 * ( rhd (ji+1,jj,1) + rhd (ji,jj,1) ) & |
---|
465 | & * ( fsdept(ji+1,jj,1) - fsdept(ji,jj,1) ) / e1u(ji,jj) |
---|
466 | zvap = -zcoef0 * ( rhd (ji,jj+1,1) + rhd (ji,jj,1) ) & |
---|
467 | & * ( fsdept(ji,jj+1,1) - fsdept(ji,jj,1) ) / e2v(ji,jj) |
---|
468 | ! add to the general momentum trend |
---|
469 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) + zuap |
---|
470 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) + zvap |
---|
471 | END DO |
---|
472 | END DO |
---|
473 | ! |
---|
474 | ! interior value (2=<jk=<jpkm1) |
---|
475 | DO jk = 2, jpkm1 |
---|
476 | DO jj = 2, jpjm1 |
---|
477 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
478 | ! hydrostatic pressure gradient along s-surfaces |
---|
479 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
---|
480 | & + zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,jk ) * rhd(ji+1,jj,jk) & |
---|
481 | & -fse3t(ji ,jj,jk ) * rhd(ji ,jj,jk) ) & |
---|
482 | & + zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,jk-1) * rhd(ji+1,jj,jk-1) & |
---|
483 | & -fse3t(ji ,jj,jk-1) * rhd(ji ,jj,jk-1) ) |
---|
484 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
---|
485 | & + zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,jk ) * rhd(ji,jj+1,jk) & |
---|
486 | & -fse3t(ji,jj ,jk ) * rhd(ji,jj, jk) ) & |
---|
487 | & + zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,jk-1) * rhd(ji,jj+1,jk-1) & |
---|
488 | & -fse3t(ji,jj ,jk-1) * rhd(ji,jj, jk-1) ) |
---|
489 | ! s-coordinate pressure gradient correction |
---|
490 | zuap = - zcoef0 * ( rhd (ji+1,jj,jk) + rhd (ji,jj,jk) ) & |
---|
491 | & * ( fsdept(ji+1,jj,jk) - fsdept(ji,jj,jk) ) / e1u(ji,jj) |
---|
492 | zvap = - zcoef0 * ( rhd (ji,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
493 | & * ( fsdept(ji,jj+1,jk) - fsdept(ji,jj,jk) ) / e2v(ji,jj) |
---|
494 | ! add to the general momentum trend |
---|
495 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) + zuap |
---|
496 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) + zvap |
---|
497 | END DO |
---|
498 | END DO |
---|
499 | END DO |
---|
500 | ! |
---|
501 | END SUBROUTINE hpg_hel |
---|
502 | |
---|
503 | |
---|
504 | SUBROUTINE hpg_wdj( kt ) |
---|
505 | !!--------------------------------------------------------------------- |
---|
506 | !! *** ROUTINE hpg_wdj *** |
---|
507 | !! |
---|
508 | !! ** Method : Weighted Density Jacobian (wdj) scheme (song 1998) |
---|
509 | !! The weighting coefficients from the namelist parameter rn_gamma |
---|
510 | !! (alpha=0.5-rn_gamma ; beta=1-alpha=0.5+rn_gamma |
---|
511 | !! |
---|
512 | !! Reference : Song, Mon. Wea. Rev., 126, 3213-3230, 1998. |
---|
513 | !!---------------------------------------------------------------------- |
---|
514 | USE oce, ONLY : zhpi => ta ! use ta as 3D workspace |
---|
515 | USE oce, ONLY : zhpj => sa ! use sa as 3D workspace |
---|
516 | !! |
---|
517 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
518 | !! |
---|
519 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
520 | REAL(wp) :: zcoef0, zuap, zvap ! temporary scalars |
---|
521 | REAL(wp) :: zalph , zbeta ! " " |
---|
522 | !!---------------------------------------------------------------------- |
---|
523 | |
---|
524 | IF( kt == nit000 ) THEN |
---|
525 | IF(lwp) WRITE(numout,*) |
---|
526 | IF(lwp) WRITE(numout,*) 'dyn:hpg_wdj : hydrostatic pressure gradient trend' |
---|
527 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ Weighted Density Jacobian' |
---|
528 | ENDIF |
---|
529 | |
---|
530 | ! Local constant initialization |
---|
531 | zcoef0 = - grav * 0.5_wp |
---|
532 | zalph = 0.5_wp - rn_gamma ! weighting coefficients (alpha=0.5-rn_gamma |
---|
533 | zbeta = 0.5_wp + rn_gamma ! (beta =1-alpha=0.5+rn_gamma |
---|
534 | |
---|
535 | ! Surface value (no ponderation) |
---|
536 | DO jj = 2, jpjm1 |
---|
537 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
538 | ! hydrostatic pressure gradient along s-surfaces |
---|
539 | zhpi(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3w(ji+1,jj ,1) * rhd(ji+1,jj ,1) & |
---|
540 | & - fse3w(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
541 | zhpj(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3w(ji ,jj+1,1) * rhd(ji ,jj+1,1) & |
---|
542 | & - fse3w(ji ,jj ,1) * rhd(ji, jj ,1) ) |
---|
543 | ! s-coordinate pressure gradient correction |
---|
544 | zuap = -zcoef0 * ( rhd (ji+1,jj,1) + rhd (ji,jj,1) ) & |
---|
545 | & * ( fsde3w(ji+1,jj,1) - fsde3w(ji,jj,1) ) / e1u(ji,jj) |
---|
546 | zvap = -zcoef0 * ( rhd (ji,jj+1,1) + rhd (ji,jj,1) ) & |
---|
547 | & * ( fsde3w(ji,jj+1,1) - fsde3w(ji,jj,1) ) / e2v(ji,jj) |
---|
548 | ! add to the general momentum trend |
---|
549 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) + zuap |
---|
550 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) + zvap |
---|
551 | END DO |
---|
552 | END DO |
---|
553 | |
---|
554 | ! Interior value (2=<jk=<jpkm1) (weighted with zalph & zbeta) |
---|
555 | DO jk = 2, jpkm1 |
---|
556 | DO jj = 2, jpjm1 |
---|
557 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
558 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) + zcoef0 / e1u(ji,jj) & |
---|
559 | & * ( ( fsde3w(ji+1,jj,jk ) + fsde3w(ji,jj,jk ) & |
---|
560 | & - fsde3w(ji+1,jj,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
561 | & * ( zalph * ( rhd (ji+1,jj,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
562 | & + zbeta * ( rhd (ji+1,jj,jk ) - rhd (ji,jj,jk ) ) ) & |
---|
563 | & - ( rhd (ji+1,jj,jk ) + rhd (ji,jj,jk ) & |
---|
564 | & - rhd (ji+1,jj,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
565 | & * ( zalph * ( fsde3w(ji+1,jj,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
566 | & + zbeta * ( fsde3w(ji+1,jj,jk ) - fsde3w(ji,jj,jk ) ) ) ) |
---|
567 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) + zcoef0 / e2v(ji,jj) & |
---|
568 | & * ( ( fsde3w(ji,jj+1,jk ) + fsde3w(ji,jj,jk ) & |
---|
569 | & - fsde3w(ji,jj+1,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
570 | & * ( zalph * ( rhd (ji,jj+1,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
571 | & + zbeta * ( rhd (ji,jj+1,jk ) - rhd (ji,jj,jk ) ) ) & |
---|
572 | & - ( rhd (ji,jj+1,jk ) + rhd (ji,jj,jk ) & |
---|
573 | & - rhd (ji,jj+1,jk-1) - rhd (ji,jj,jk-1) ) & |
---|
574 | & * ( zalph * ( fsde3w(ji,jj+1,jk-1) - fsde3w(ji,jj,jk-1) ) & |
---|
575 | & + zbeta * ( fsde3w(ji,jj+1,jk ) - fsde3w(ji,jj,jk ) ) ) ) |
---|
576 | ! add to the general momentum trend |
---|
577 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
---|
578 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
---|
579 | END DO |
---|
580 | END DO |
---|
581 | END DO |
---|
582 | ! |
---|
583 | END SUBROUTINE hpg_wdj |
---|
584 | |
---|
585 | |
---|
586 | SUBROUTINE hpg_djc( kt ) |
---|
587 | !!--------------------------------------------------------------------- |
---|
588 | !! *** ROUTINE hpg_djc *** |
---|
589 | !! |
---|
590 | !! ** Method : Density Jacobian with Cubic polynomial scheme |
---|
591 | !! |
---|
592 | !! Reference: Shchepetkin and McWilliams, J. Geophys. Res., 108(C3), 3090, 2003 |
---|
593 | !!---------------------------------------------------------------------- |
---|
594 | USE oce, ONLY : zhpi => ta ! use ta as 3D workspace |
---|
595 | USE oce, ONLY : zhpj => sa ! use sa as 3D workspace |
---|
596 | !! |
---|
597 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
598 | !! |
---|
599 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
600 | REAL(wp) :: zcoef0, zep, cffw ! temporary scalars |
---|
601 | REAL(wp) :: z1_10, cffu, cffx ! " " |
---|
602 | REAL(wp) :: z1_12, cffv, cffy ! " " |
---|
603 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: drhox, dzx, drhou, dzu, rho_i ! 3D workspace |
---|
604 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: drhoy, dzy, drhov, dzv, rho_j ! " " |
---|
605 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: drhoz, dzz, drhow, dzw, rho_k ! " " |
---|
606 | !!---------------------------------------------------------------------- |
---|
607 | |
---|
608 | IF( kt == nit000 ) THEN |
---|
609 | IF(lwp) WRITE(numout,*) |
---|
610 | IF(lwp) WRITE(numout,*) 'dyn:hpg_djc : hydrostatic pressure gradient trend' |
---|
611 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, density Jacobian with cubic polynomial scheme' |
---|
612 | ENDIF |
---|
613 | |
---|
614 | |
---|
615 | ! Local constant initialization |
---|
616 | zcoef0 = - grav * 0.5_wp |
---|
617 | z1_10 = 1._wp / 10._wp |
---|
618 | z1_12 = 1._wp / 12._wp |
---|
619 | |
---|
620 | !---------------------------------------------------------------------------------------- |
---|
621 | ! compute and store in provisional arrays elementary vertical and horizontal differences |
---|
622 | !---------------------------------------------------------------------------------------- |
---|
623 | |
---|
624 | !!bug gm Not a true bug, but... dzz=e3w for dzx, dzy verify what it is really |
---|
625 | |
---|
626 | DO jk = 2, jpkm1 |
---|
627 | DO jj = 2, jpjm1 |
---|
628 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
629 | drhoz(ji,jj,jk) = rhd (ji ,jj ,jk) - rhd (ji,jj,jk-1) |
---|
630 | dzz (ji,jj,jk) = fsde3w(ji ,jj ,jk) - fsde3w(ji,jj,jk-1) |
---|
631 | drhox(ji,jj,jk) = rhd (ji+1,jj ,jk) - rhd (ji,jj,jk ) |
---|
632 | dzx (ji,jj,jk) = fsde3w(ji+1,jj ,jk) - fsde3w(ji,jj,jk ) |
---|
633 | drhoy(ji,jj,jk) = rhd (ji ,jj+1,jk) - rhd (ji,jj,jk ) |
---|
634 | dzy (ji,jj,jk) = fsde3w(ji ,jj+1,jk) - fsde3w(ji,jj,jk ) |
---|
635 | END DO |
---|
636 | END DO |
---|
637 | END DO |
---|
638 | |
---|
639 | !------------------------------------------------------------------------- |
---|
640 | ! compute harmonic averages using eq. 5.18 |
---|
641 | !------------------------------------------------------------------------- |
---|
642 | zep = 1.e-15 |
---|
643 | |
---|
644 | !!bug gm drhoz not defined at level 1 and used (jk-1 with jk=2) |
---|
645 | !!bug gm idem for drhox, drhoy et ji=jpi and jj=jpj |
---|
646 | |
---|
647 | DO jk = 2, jpkm1 |
---|
648 | DO jj = 2, jpjm1 |
---|
649 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
650 | cffw = 2._wp * drhoz(ji ,jj ,jk) * drhoz(ji,jj,jk-1) |
---|
651 | |
---|
652 | cffu = 2._wp * drhox(ji+1,jj ,jk) * drhox(ji,jj,jk ) |
---|
653 | cffx = 2._wp * dzx (ji+1,jj ,jk) * dzx (ji,jj,jk ) |
---|
654 | |
---|
655 | cffv = 2._wp * drhoy(ji ,jj+1,jk) * drhoy(ji,jj,jk ) |
---|
656 | cffy = 2._wp * dzy (ji ,jj+1,jk) * dzy (ji,jj,jk ) |
---|
657 | |
---|
658 | IF( cffw > zep) THEN |
---|
659 | drhow(ji,jj,jk) = 2._wp * drhoz(ji,jj,jk) * drhoz(ji,jj,jk-1) & |
---|
660 | & / ( drhoz(ji,jj,jk) + drhoz(ji,jj,jk-1) ) |
---|
661 | ELSE |
---|
662 | drhow(ji,jj,jk) = 0._wp |
---|
663 | ENDIF |
---|
664 | |
---|
665 | dzw(ji,jj,jk) = 2._wp * dzz(ji,jj,jk) * dzz(ji,jj,jk-1) & |
---|
666 | & / ( dzz(ji,jj,jk) + dzz(ji,jj,jk-1) ) |
---|
667 | |
---|
668 | IF( cffu > zep ) THEN |
---|
669 | drhou(ji,jj,jk) = 2._wp * drhox(ji+1,jj,jk) * drhox(ji,jj,jk) & |
---|
670 | & / ( drhox(ji+1,jj,jk) + drhox(ji,jj,jk) ) |
---|
671 | ELSE |
---|
672 | drhou(ji,jj,jk ) = 0._wp |
---|
673 | ENDIF |
---|
674 | |
---|
675 | IF( cffx > zep ) THEN |
---|
676 | dzu(ji,jj,jk) = 2._wp * dzx(ji+1,jj,jk) * dzx(ji,jj,jk) & |
---|
677 | & / ( dzx(ji+1,jj,jk) + dzx(ji,jj,jk) ) |
---|
678 | ELSE |
---|
679 | dzu(ji,jj,jk) = 0._wp |
---|
680 | ENDIF |
---|
681 | |
---|
682 | IF( cffv > zep ) THEN |
---|
683 | drhov(ji,jj,jk) = 2._wp * drhoy(ji,jj+1,jk) * drhoy(ji,jj,jk) & |
---|
684 | & / ( drhoy(ji,jj+1,jk) + drhoy(ji,jj,jk) ) |
---|
685 | ELSE |
---|
686 | drhov(ji,jj,jk) = 0._wp |
---|
687 | ENDIF |
---|
688 | |
---|
689 | IF( cffy > zep ) THEN |
---|
690 | dzv(ji,jj,jk) = 2._wp * dzy(ji,jj+1,jk) * dzy(ji,jj,jk) & |
---|
691 | & / ( dzy(ji,jj+1,jk) + dzy(ji,jj,jk) ) |
---|
692 | ELSE |
---|
693 | dzv(ji,jj,jk) = 0._wp |
---|
694 | ENDIF |
---|
695 | |
---|
696 | END DO |
---|
697 | END DO |
---|
698 | END DO |
---|
699 | |
---|
700 | !---------------------------------------------------------------------------------- |
---|
701 | ! apply boundary conditions at top and bottom using 5.36-5.37 |
---|
702 | !---------------------------------------------------------------------------------- |
---|
703 | drhow(:,:, 1 ) = 1.5_wp * ( drhoz(:,:, 2 ) - drhoz(:,:, 1 ) ) - 0.5_wp * drhow(:,:, 2 ) |
---|
704 | drhou(:,:, 1 ) = 1.5_wp * ( drhox(:,:, 2 ) - drhox(:,:, 1 ) ) - 0.5_wp * drhou(:,:, 2 ) |
---|
705 | drhov(:,:, 1 ) = 1.5_wp * ( drhoy(:,:, 2 ) - drhoy(:,:, 1 ) ) - 0.5_wp * drhov(:,:, 2 ) |
---|
706 | |
---|
707 | drhow(:,:,jpk) = 1.5_wp * ( drhoz(:,:,jpk) - drhoz(:,:,jpkm1) ) - 0.5_wp * drhow(:,:,jpkm1) |
---|
708 | drhou(:,:,jpk) = 1.5_wp * ( drhox(:,:,jpk) - drhox(:,:,jpkm1) ) - 0.5_wp * drhou(:,:,jpkm1) |
---|
709 | drhov(:,:,jpk) = 1.5_wp * ( drhoy(:,:,jpk) - drhoy(:,:,jpkm1) ) - 0.5_wp * drhov(:,:,jpkm1) |
---|
710 | |
---|
711 | |
---|
712 | !-------------------------------------------------------------- |
---|
713 | ! Upper half of top-most grid box, compute and store |
---|
714 | !------------------------------------------------------------- |
---|
715 | |
---|
716 | !!bug gm : e3w-de3w = 0.5*e3w .... and de3w(2)-de3w(1)=e3w(2) .... to be verified |
---|
717 | ! true if de3w is really defined as the sum of the e3w scale factors as, it seems to me, it should be |
---|
718 | |
---|
719 | DO jj = 2, jpjm1 |
---|
720 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
721 | rho_k(ji,jj,1) = -grav * ( fse3w(ji,jj,1) - fsde3w(ji,jj,1) ) & |
---|
722 | & * ( rhd(ji,jj,1) & |
---|
723 | & + 0.5_wp * ( rhd(ji,jj,2) - rhd(ji,jj,1) ) & |
---|
724 | & * ( fse3w (ji,jj,1) - fsde3w(ji,jj,1) ) & |
---|
725 | & / ( fsde3w(ji,jj,2) - fsde3w(ji,jj,1) ) ) |
---|
726 | END DO |
---|
727 | END DO |
---|
728 | |
---|
729 | !!bug gm : here also, simplification is possible |
---|
730 | !!bug gm : optimisation: 1/10 and 1/12 the division should be done before the loop |
---|
731 | |
---|
732 | DO jk = 2, jpkm1 |
---|
733 | DO jj = 2, jpjm1 |
---|
734 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
735 | |
---|
736 | rho_k(ji,jj,jk) = zcoef0 * ( rhd (ji,jj,jk) + rhd (ji,jj,jk-1) ) & |
---|
737 | & * ( fsde3w(ji,jj,jk) - fsde3w(ji,jj,jk-1) ) & |
---|
738 | & - grav * z1_10 * ( & |
---|
739 | & ( drhow (ji,jj,jk) - drhow (ji,jj,jk-1) ) & |
---|
740 | & * ( fsde3w(ji,jj,jk) - fsde3w(ji,jj,jk-1) - z1_12 * ( dzw (ji,jj,jk) + dzw (ji,jj,jk-1) ) ) & |
---|
741 | & - ( dzw (ji,jj,jk) - dzw (ji,jj,jk-1) ) & |
---|
742 | & * ( rhd (ji,jj,jk) - rhd (ji,jj,jk-1) - z1_12 * ( drhow(ji,jj,jk) + drhow(ji,jj,jk-1) ) ) & |
---|
743 | & ) |
---|
744 | |
---|
745 | rho_i(ji,jj,jk) = zcoef0 * ( rhd (ji+1,jj,jk) + rhd (ji,jj,jk) ) & |
---|
746 | & * ( fsde3w(ji+1,jj,jk) - fsde3w(ji,jj,jk) ) & |
---|
747 | & - grav* z1_10 * ( & |
---|
748 | & ( drhou (ji+1,jj,jk) - drhou (ji,jj,jk) ) & |
---|
749 | & * ( fsde3w(ji+1,jj,jk) - fsde3w(ji,jj,jk) - z1_12 * ( dzu (ji+1,jj,jk) + dzu (ji,jj,jk) ) ) & |
---|
750 | & - ( dzu (ji+1,jj,jk) - dzu (ji,jj,jk) ) & |
---|
751 | & * ( rhd (ji+1,jj,jk) - rhd (ji,jj,jk) - z1_12 * ( drhou(ji+1,jj,jk) + drhou(ji,jj,jk) ) ) & |
---|
752 | & ) |
---|
753 | |
---|
754 | rho_j(ji,jj,jk) = zcoef0 * ( rhd (ji,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
755 | & * ( fsde3w(ji,jj+1,jk) - fsde3w(ji,jj,jk) ) & |
---|
756 | & - grav* z1_10 * ( & |
---|
757 | & ( drhov (ji,jj+1,jk) - drhov (ji,jj,jk) ) & |
---|
758 | & * ( fsde3w(ji,jj+1,jk) - fsde3w(ji,jj,jk) - z1_12 * ( dzv (ji,jj+1,jk) + dzv (ji,jj,jk) ) ) & |
---|
759 | & - ( dzv (ji,jj+1,jk) - dzv (ji,jj,jk) ) & |
---|
760 | & * ( rhd (ji,jj+1,jk) - rhd (ji,jj,jk) - z1_12 * ( drhov(ji,jj+1,jk) + drhov(ji,jj,jk) ) ) & |
---|
761 | & ) |
---|
762 | |
---|
763 | END DO |
---|
764 | END DO |
---|
765 | END DO |
---|
766 | CALL lbc_lnk(rho_k,'W',1.) |
---|
767 | CALL lbc_lnk(rho_i,'U',1.) |
---|
768 | CALL lbc_lnk(rho_j,'V',1.) |
---|
769 | |
---|
770 | |
---|
771 | ! --------------- |
---|
772 | ! Surface value |
---|
773 | ! --------------- |
---|
774 | DO jj = 2, jpjm1 |
---|
775 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
776 | zhpi(ji,jj,1) = ( rho_k(ji+1,jj ,1) - rho_k(ji,jj,1) - rho_i(ji,jj,1) ) / e1u(ji,jj) |
---|
777 | zhpj(ji,jj,1) = ( rho_k(ji ,jj+1,1) - rho_k(ji,jj,1) - rho_j(ji,jj,1) ) / e2v(ji,jj) |
---|
778 | ! add to the general momentum trend |
---|
779 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
---|
780 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
---|
781 | END DO |
---|
782 | END DO |
---|
783 | |
---|
784 | ! ---------------- |
---|
785 | ! interior value (2=<jk=<jpkm1) |
---|
786 | ! ---------------- |
---|
787 | DO jk = 2, jpkm1 |
---|
788 | DO jj = 2, jpjm1 |
---|
789 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
790 | ! hydrostatic pressure gradient along s-surfaces |
---|
791 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
---|
792 | & + ( ( rho_k(ji+1,jj,jk) - rho_k(ji,jj,jk ) ) & |
---|
793 | & - ( rho_i(ji ,jj,jk) - rho_i(ji,jj,jk-1) ) ) / e1u(ji,jj) |
---|
794 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
---|
795 | & + ( ( rho_k(ji,jj+1,jk) - rho_k(ji,jj,jk ) ) & |
---|
796 | & -( rho_j(ji,jj ,jk) - rho_j(ji,jj,jk-1) ) ) / e2v(ji,jj) |
---|
797 | ! add to the general momentum trend |
---|
798 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
---|
799 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
---|
800 | END DO |
---|
801 | END DO |
---|
802 | END DO |
---|
803 | ! |
---|
804 | END SUBROUTINE hpg_djc |
---|
805 | |
---|
806 | |
---|
807 | SUBROUTINE hpg_rot( kt ) |
---|
808 | !!--------------------------------------------------------------------- |
---|
809 | !! *** ROUTINE hpg_rot *** |
---|
810 | !! |
---|
811 | !! ** Method : rotated axes scheme (Thiem and Berntsen 2005) |
---|
812 | !! |
---|
813 | !! Reference: Thiem & Berntsen, Ocean Modelling, In press, 2005. |
---|
814 | !!---------------------------------------------------------------------- |
---|
815 | USE oce, ONLY : zhpi => ta ! use ta as 3D workspace |
---|
816 | USE oce, ONLY : zhpj => sa ! use sa as 3D workspace |
---|
817 | !! |
---|
818 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
819 | !! |
---|
820 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
821 | REAL(wp) :: zforg, zcoef0, zuap, zmskd1, zmskd1m ! temporary scalar |
---|
822 | REAL(wp) :: zfrot , zvap, zmskd2, zmskd2m ! " " |
---|
823 | REAL(wp), DIMENSION(jpi,jpj) :: zdistr, zsina, zcosa ! 2D workspace |
---|
824 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zhpiorg, zhpirot, zhpitra, zhpine ! 3D workspace |
---|
825 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zhpjorg, zhpjrot, zhpjtra, zhpjne ! " " |
---|
826 | !!---------------------------------------------------------------------- |
---|
827 | |
---|
828 | IF( kt == nit000 ) THEN |
---|
829 | IF(lwp) WRITE(numout,*) |
---|
830 | IF(lwp) WRITE(numout,*) 'dyn:hpg_rot : hydrostatic pressure gradient trend' |
---|
831 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, rotated axes scheme used' |
---|
832 | ENDIF |
---|
833 | |
---|
834 | ! ------------------------------- |
---|
835 | ! Local constant initialization |
---|
836 | ! ------------------------------- |
---|
837 | zcoef0 = - grav * 0.5_wp |
---|
838 | zforg = 0.95_wp |
---|
839 | zfrot = 1._wp - zforg |
---|
840 | |
---|
841 | ! inverse of the distance between 2 diagonal T-points (defined at F-point) (here zcoef0/distance) |
---|
842 | zdistr(:,:) = zcoef0 / SQRT( e1f(:,:)*e1f(:,:) + e2f(:,:)*e1f(:,:) ) |
---|
843 | |
---|
844 | ! sinus and cosinus of diagonal angle at F-point |
---|
845 | zsina(:,:) = ATAN2( e2f(:,:), e1f(:,:) ) |
---|
846 | zcosa(:,:) = COS( zsina(:,:) ) |
---|
847 | zsina(:,:) = SIN( zsina(:,:) ) |
---|
848 | |
---|
849 | ! --------------- |
---|
850 | ! Surface value |
---|
851 | ! --------------- |
---|
852 | ! compute and add to the general trend the pressure gradients along the axes |
---|
853 | DO jj = 2, jpjm1 |
---|
854 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
855 | ! hydrostatic pressure gradient along s-surfaces |
---|
856 | zhpiorg(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,1) * rhd(ji+1,jj,1) & |
---|
857 | & - fse3t(ji ,jj,1) * rhd(ji ,jj,1) ) |
---|
858 | zhpjorg(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,1) * rhd(ji,jj+1,1) & |
---|
859 | & - fse3t(ji,jj ,1) * rhd(ji,jj ,1) ) |
---|
860 | ! s-coordinate pressure gradient correction |
---|
861 | zuap = -zcoef0 * ( rhd (ji+1,jj ,1) + rhd (ji,jj,1) ) & |
---|
862 | & * ( fsdept(ji+1,jj ,1) - fsdept(ji,jj,1) ) / e1u(ji,jj) |
---|
863 | zvap = -zcoef0 * ( rhd (ji ,jj+1,1) + rhd (ji,jj,1) ) & |
---|
864 | & * ( fsdept(ji ,jj+1,1) - fsdept(ji,jj,1) ) / e2v(ji,jj) |
---|
865 | ! add to the general momentum trend |
---|
866 | ua(ji,jj,1) = ua(ji,jj,1) + zforg * ( zhpiorg(ji,jj,1) + zuap ) |
---|
867 | va(ji,jj,1) = va(ji,jj,1) + zforg * ( zhpjorg(ji,jj,1) + zvap ) |
---|
868 | END DO |
---|
869 | END DO |
---|
870 | |
---|
871 | ! compute the pressure gradients in the diagonal directions |
---|
872 | DO jj = 1, jpjm1 |
---|
873 | DO ji = 1, fs_jpim1 ! vector opt. |
---|
874 | zmskd1 = tmask(ji+1,jj+1,1) * tmask(ji ,jj,1) ! mask in the 1st diagnonal |
---|
875 | zmskd2 = tmask(ji ,jj+1,1) * tmask(ji+1,jj,1) ! mask in the 2nd diagnonal |
---|
876 | ! hydrostatic pressure gradient along s-surfaces |
---|
877 | zhpitra(ji,jj,1) = zdistr(ji,jj) * zmskd1 * ( fse3t(ji+1,jj+1,1) * rhd(ji+1,jj+1,1) & |
---|
878 | & - fse3t(ji ,jj ,1) * rhd(ji ,jj ,1) ) |
---|
879 | zhpjtra(ji,jj,1) = zdistr(ji,jj) * zmskd2 * ( fse3t(ji ,jj+1,1) * rhd(ji ,jj+1,1) & |
---|
880 | & - fse3t(ji+1,jj ,1) * rhd(ji+1,jj ,1) ) |
---|
881 | ! s-coordinate pressure gradient correction |
---|
882 | zuap = -zdistr(ji,jj) * zmskd1 * ( rhd (ji+1,jj+1,1) + rhd (ji ,jj,1) ) & |
---|
883 | & * ( fsdept(ji+1,jj+1,1) - fsdept(ji ,jj,1) ) |
---|
884 | zvap = -zdistr(ji,jj) * zmskd2 * ( rhd (ji ,jj+1,1) + rhd (ji+1,jj,1) ) & |
---|
885 | & * ( fsdept(ji ,jj+1,1) - fsdept(ji+1,jj,1) ) |
---|
886 | ! back rotation |
---|
887 | zhpine(ji,jj,1) = zcosa(ji,jj) * ( zhpitra(ji,jj,1) + zuap ) & |
---|
888 | & - zsina(ji,jj) * ( zhpjtra(ji,jj,1) + zvap ) |
---|
889 | zhpjne(ji,jj,1) = zsina(ji,jj) * ( zhpitra(ji,jj,1) + zuap ) & |
---|
890 | & + zcosa(ji,jj) * ( zhpjtra(ji,jj,1) + zvap ) |
---|
891 | END DO |
---|
892 | END DO |
---|
893 | |
---|
894 | ! interpolate and add to the general trend the diagonal gradient |
---|
895 | DO jj = 2, jpjm1 |
---|
896 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
897 | ! averaging |
---|
898 | zhpirot(ji,jj,1) = 0.5 * ( zhpine(ji,jj,1) + zhpine(ji ,jj-1,1) ) |
---|
899 | zhpjrot(ji,jj,1) = 0.5 * ( zhpjne(ji,jj,1) + zhpjne(ji-1,jj ,1) ) |
---|
900 | ! add to the general momentum trend |
---|
901 | ua(ji,jj,1) = ua(ji,jj,1) + zfrot * zhpirot(ji,jj,1) |
---|
902 | va(ji,jj,1) = va(ji,jj,1) + zfrot * zhpjrot(ji,jj,1) |
---|
903 | END DO |
---|
904 | END DO |
---|
905 | |
---|
906 | ! ----------------- |
---|
907 | ! 2. interior value (2=<jk=<jpkm1) |
---|
908 | ! ----------------- |
---|
909 | ! compute and add to the general trend the pressure gradients along the axes |
---|
910 | DO jk = 2, jpkm1 |
---|
911 | DO jj = 2, jpjm1 |
---|
912 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
913 | ! hydrostatic pressure gradient along s-surfaces |
---|
914 | zhpiorg(ji,jj,jk) = zhpiorg(ji,jj,jk-1) & |
---|
915 | & + zcoef0 / e1u(ji,jj) * ( fse3t(ji+1,jj,jk ) * rhd(ji+1,jj,jk ) & |
---|
916 | & - fse3t(ji ,jj,jk ) * rhd(ji ,jj,jk ) & |
---|
917 | & + fse3t(ji+1,jj,jk-1) * rhd(ji+1,jj,jk-1) & |
---|
918 | & - fse3t(ji ,jj,jk-1) * rhd(ji ,jj,jk-1) ) |
---|
919 | zhpjorg(ji,jj,jk) = zhpjorg(ji,jj,jk-1) & |
---|
920 | & + zcoef0 / e2v(ji,jj) * ( fse3t(ji,jj+1,jk ) * rhd(ji,jj+1,jk ) & |
---|
921 | & - fse3t(ji,jj ,jk ) * rhd(ji,jj, jk ) & |
---|
922 | & + fse3t(ji,jj+1,jk-1) * rhd(ji,jj+1,jk-1) & |
---|
923 | & - fse3t(ji,jj ,jk-1) * rhd(ji,jj, jk-1) ) |
---|
924 | ! s-coordinate pressure gradient correction |
---|
925 | zuap = - zcoef0 * ( rhd (ji+1,jj ,jk) + rhd (ji,jj,jk) ) & |
---|
926 | & * ( fsdept(ji+1,jj ,jk) - fsdept(ji,jj,jk) ) / e1u(ji,jj) |
---|
927 | zvap = - zcoef0 * ( rhd (ji ,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
928 | & * ( fsdept(ji ,jj+1,jk) - fsdept(ji,jj,jk) ) / e2v(ji,jj) |
---|
929 | ! add to the general momentum trend |
---|
930 | ua(ji,jj,jk) = ua(ji,jj,jk) + zforg*( zhpiorg(ji,jj,jk) + zuap ) |
---|
931 | va(ji,jj,jk) = va(ji,jj,jk) + zforg*( zhpjorg(ji,jj,jk) + zvap ) |
---|
932 | END DO |
---|
933 | END DO |
---|
934 | END DO |
---|
935 | |
---|
936 | ! compute the pressure gradients in the diagonal directions |
---|
937 | DO jk = 2, jpkm1 |
---|
938 | DO jj = 1, jpjm1 |
---|
939 | DO ji = 1, fs_jpim1 ! vector opt. |
---|
940 | zmskd1 = tmask(ji+1,jj+1,jk ) * tmask(ji ,jj,jk ) ! level jk mask in the 1st diagnonal |
---|
941 | zmskd1m = tmask(ji+1,jj+1,jk-1) * tmask(ji ,jj,jk-1) ! level jk-1 " " |
---|
942 | zmskd2 = tmask(ji ,jj+1,jk ) * tmask(ji+1,jj,jk ) ! level jk mask in the 2nd diagnonal |
---|
943 | zmskd2m = tmask(ji ,jj+1,jk-1) * tmask(ji+1,jj,jk-1) ! level jk-1 " " |
---|
944 | ! hydrostatic pressure gradient along s-surfaces |
---|
945 | zhpitra(ji,jj,jk) = zhpitra(ji,jj,jk-1) & |
---|
946 | & + zdistr(ji,jj) * zmskd1 * ( fse3t(ji+1,jj+1,jk ) * rhd(ji+1,jj+1,jk) & |
---|
947 | & -fse3t(ji ,jj ,jk ) * rhd(ji ,jj ,jk) ) & |
---|
948 | & + zdistr(ji,jj) * zmskd1m * ( fse3t(ji+1,jj+1,jk-1) * rhd(ji+1,jj+1,jk-1) & |
---|
949 | & -fse3t(ji ,jj ,jk-1) * rhd(ji ,jj ,jk-1) ) |
---|
950 | zhpjtra(ji,jj,jk) = zhpjtra(ji,jj,jk-1) & |
---|
951 | & + zdistr(ji,jj) * zmskd2 * ( fse3t(ji ,jj+1,jk ) * rhd(ji ,jj+1,jk) & |
---|
952 | & -fse3t(ji+1,jj ,jk ) * rhd(ji+1,jj, jk) ) & |
---|
953 | & + zdistr(ji,jj) * zmskd2m * ( fse3t(ji ,jj+1,jk-1) * rhd(ji ,jj+1,jk-1) & |
---|
954 | & -fse3t(ji+1,jj ,jk-1) * rhd(ji+1,jj, jk-1) ) |
---|
955 | ! s-coordinate pressure gradient correction |
---|
956 | zuap = - zdistr(ji,jj) * zmskd1 * ( rhd (ji+1,jj+1,jk) + rhd (ji ,jj,jk) ) & |
---|
957 | & * ( fsdept(ji+1,jj+1,jk) - fsdept(ji ,jj,jk) ) |
---|
958 | zvap = - zdistr(ji,jj) * zmskd2 * ( rhd (ji ,jj+1,jk) + rhd (ji+1,jj,jk) ) & |
---|
959 | & * ( fsdept(ji ,jj+1,jk) - fsdept(ji+1,jj,jk) ) |
---|
960 | ! back rotation |
---|
961 | zhpine(ji,jj,jk) = zcosa(ji,jj) * ( zhpitra(ji,jj,jk) + zuap ) & |
---|
962 | & - zsina(ji,jj) * ( zhpjtra(ji,jj,jk) + zvap ) |
---|
963 | zhpjne(ji,jj,jk) = zsina(ji,jj) * ( zhpitra(ji,jj,jk) + zuap ) & |
---|
964 | & + zcosa(ji,jj) * ( zhpjtra(ji,jj,jk) + zvap ) |
---|
965 | END DO |
---|
966 | END DO |
---|
967 | END DO |
---|
968 | |
---|
969 | ! interpolate and add to the general trend |
---|
970 | DO jk = 2, jpkm1 |
---|
971 | DO jj = 2, jpjm1 |
---|
972 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
973 | ! averaging |
---|
974 | zhpirot(ji,jj,jk) = 0.5 * ( zhpine(ji,jj,jk) + zhpine(ji ,jj-1,jk) ) |
---|
975 | zhpjrot(ji,jj,jk) = 0.5 * ( zhpjne(ji,jj,jk) + zhpjne(ji-1,jj ,jk) ) |
---|
976 | ! add to the general momentum trend |
---|
977 | ua(ji,jj,jk) = ua(ji,jj,jk) + zfrot * zhpirot(ji,jj,jk) |
---|
978 | va(ji,jj,jk) = va(ji,jj,jk) + zfrot * zhpjrot(ji,jj,jk) |
---|
979 | END DO |
---|
980 | END DO |
---|
981 | END DO |
---|
982 | ! |
---|
983 | END SUBROUTINE hpg_rot |
---|
984 | |
---|
985 | !!====================================================================== |
---|
986 | END MODULE dynhpg |
---|