1 | MODULE dynzdf |
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2 | !!============================================================================== |
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3 | !! *** MODULE dynzdf *** |
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4 | !! Ocean dynamics : vertical component of the momentum mixing trend |
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5 | !!============================================================================== |
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6 | !! History : 9.0 ! 05-11 (G. Madec) Original code |
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7 | !!---------------------------------------------------------------------- |
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8 | |
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9 | !!---------------------------------------------------------------------- |
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10 | !! dyn_zdf : Update the momentum trend with the vertical diffusion |
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11 | !! zdf_ctl : initializations of the vertical diffusion scheme |
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12 | !!---------------------------------------------------------------------- |
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13 | USE oce ! ocean dynamics and tracers variables |
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14 | USE dom_oce ! ocean space and time domain variables |
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15 | USE zdf_oce ! ocean vertical physics variables |
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16 | |
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17 | USE dynzdf_exp ! vertical diffusion: explicit (dyn_zdf_exp routine) |
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18 | USE dynzdf_imp ! vertical diffusion: implicit (dyn_zdf_imp routine) |
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19 | |
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20 | USE ldfdyn_oce ! ocean dynamics: lateral physics |
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21 | USE trdmod ! ocean active dynamics and tracers trends |
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22 | USE trdmod_oce ! ocean variables trends |
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23 | USE in_out_manager ! I/O manager |
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24 | USE prtctl ! Print control |
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25 | |
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26 | IMPLICIT NONE |
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27 | PRIVATE |
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28 | |
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29 | PUBLIC dyn_zdf ! routine called by step.F90 |
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30 | |
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31 | INTEGER :: nzdf = 0 ! type vertical diffusion algorithm used |
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32 | ! ! defined from ln_zdf... namlist logicals) |
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33 | |
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34 | REAL(wp) :: r2dt ! time-step, = 2 rdttra |
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35 | ! ! except at nit000 (=rdttra) if neuler=0 |
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36 | |
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37 | !! * Substitutions |
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38 | # include "domzgr_substitute.h90" |
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39 | # include "zdfddm_substitute.h90" |
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40 | # include "vectopt_loop_substitute.h90" |
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41 | !!---------------------------------------------------------------------- |
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42 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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43 | !! $Id$ |
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44 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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45 | !!---------------------------------------------------------------------- |
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46 | |
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47 | CONTAINS |
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48 | |
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49 | SUBROUTINE dyn_zdf( kt ) |
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50 | !!---------------------------------------------------------------------- |
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51 | !! *** ROUTINE dyn_zdf *** |
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52 | !! |
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53 | !! ** Purpose : compute the vertical ocean dynamics physics. |
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54 | !!--------------------------------------------------------------------- |
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55 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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56 | !! |
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57 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: ztrdu, ztrdv ! 3D workspace |
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58 | !!--------------------------------------------------------------------- |
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59 | |
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60 | IF( kt == nit000 ) CALL zdf_ctl ! initialisation & control of options |
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61 | |
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62 | ! ! set time step |
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63 | IF( neuler == 0 .AND. kt == nit000 ) THEN ; r2dt = rdt ! = rdtra (restarting with Euler time stepping) |
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64 | ELSEIF( kt <= nit000 + 1) THEN ; r2dt = 2. * rdt ! = 2 rdttra (leapfrog) |
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65 | ENDIF |
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66 | |
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67 | IF( l_trddyn ) THEN ! temporary save of ta and sa trends |
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68 | ztrdu(:,:,:) = ua(:,:,:) |
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69 | ztrdv(:,:,:) = va(:,:,:) |
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70 | ENDIF |
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71 | |
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72 | SELECT CASE ( nzdf ) ! compute lateral mixing trend and add it to the general trend |
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73 | ! |
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74 | CASE ( 0 ) ; CALL dyn_zdf_exp ( kt, r2dt ) ! explicit scheme |
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75 | CASE ( 1 ) ; CALL dyn_zdf_imp ( kt, r2dt ) ! implicit scheme |
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76 | ! |
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77 | CASE ( -1 ) ! esopa: test all possibility with control print |
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78 | CALL dyn_zdf_exp ( kt, r2dt ) |
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79 | CALL prt_ctl( tab3d_1=ua, clinfo1=' zdf0 - Ua: ', mask1=umask, & |
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80 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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81 | CALL dyn_zdf_imp ( kt, r2dt ) |
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82 | CALL prt_ctl( tab3d_1=ua, clinfo1=' zdf1 - Ua: ', mask1=umask, & |
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83 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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84 | END SELECT |
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85 | |
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86 | IF( l_trddyn ) THEN ! save the vertical diffusive trends for further diagnostics |
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87 | ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) |
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88 | ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) |
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89 | CALL trd_mod( ztrdu, ztrdv, jpdyn_trd_zdf, 'DYN', kt ) |
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90 | ENDIF |
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91 | ! ! print mean trends (used for debugging) |
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92 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' zdf - Ua: ', mask1=umask, & |
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93 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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94 | ! |
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95 | END SUBROUTINE dyn_zdf |
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96 | |
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97 | |
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98 | SUBROUTINE zdf_ctl |
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99 | !!---------------------------------------------------------------------- |
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100 | !! *** ROUTINE zdf_ctl *** |
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101 | !! |
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102 | !! ** Purpose : initializations of the vertical diffusion scheme |
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103 | !! |
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104 | !! ** Method : implicit (euler backward) scheme (default) |
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105 | !! explicit (time-splitting) scheme if ln_zdfexp=T |
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106 | !!---------------------------------------------------------------------- |
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107 | USE zdftke_old |
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108 | USE zdftke |
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109 | USE zdfkpp |
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110 | !!---------------------------------------------------------------------- |
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111 | |
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112 | ! Choice from ln_zdfexp read in namelist in zdfini |
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113 | IF( ln_zdfexp ) THEN ; nzdf = 0 ! use explicit scheme |
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114 | ELSE ; nzdf = 1 ! use implicit scheme |
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115 | ENDIF |
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116 | |
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117 | ! Force implicit schemes |
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118 | IF( lk_zdftke_old .OR. lk_zdftke .OR. lk_zdfkpp ) nzdf = 1 ! TKE or KPP physics |
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119 | IF( ln_dynldf_iso ) nzdf = 1 ! iso-neutral lateral physics |
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120 | IF( ln_dynldf_hor .AND. ln_sco ) nzdf = 1 ! horizontal lateral physics in s-coordinate |
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121 | |
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122 | IF( lk_esopa ) nzdf = -1 ! Esopa key: All schemes used |
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123 | |
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124 | IF(lwp) THEN ! Print the choice |
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125 | WRITE(numout,*) |
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126 | WRITE(numout,*) 'dyn:zdf_ctl : vertical dynamics physics scheme' |
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127 | WRITE(numout,*) '~~~~~~~~~~~' |
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128 | IF( nzdf == -1 ) WRITE(numout,*) ' ESOPA test All scheme used' |
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129 | IF( nzdf == 0 ) WRITE(numout,*) ' Explicit time-splitting scheme' |
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130 | IF( nzdf == 1 ) WRITE(numout,*) ' Implicit (euler backward) scheme' |
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131 | ENDIF |
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132 | ! |
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133 | END SUBROUTINE zdf_ctl |
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134 | |
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135 | !!============================================================================== |
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136 | END MODULE dynzdf |
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