1 | MODULE trdtra |
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2 | !!====================================================================== |
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3 | !! *** MODULE trdtra *** |
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4 | !! Ocean diagnostics: ocean tracers trends pre-processing |
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5 | !!===================================================================== |
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6 | !! History : 3.3 ! 2010-06 (C. Ethe) creation for the TRA/TRC merge |
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7 | !! 3.5 ! 2012-02 (G. Madec) update the comments |
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8 | !!---------------------------------------------------------------------- |
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9 | #if defined key_trdtra || defined key_trdmld || defined key_trdmld_trc |
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10 | !!---------------------------------------------------------------------- |
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11 | !! trd_tra : pre-process the tracer trends and calll trd_mod(_trc) |
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12 | !! trd_tra_adv : transform a div(U.T) trend into a U.grad(T) trend |
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13 | !!---------------------------------------------------------------------- |
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14 | USE dom_oce ! ocean domain |
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15 | USE trdmod_oce ! ocean active mixed layer tracers trends |
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16 | USE trdmod ! ocean active mixed layer tracers trends |
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17 | USE trdmod_trc ! ocean passive mixed layer tracers trends |
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18 | USE in_out_manager ! I/O manager |
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19 | USE lib_mpp ! MPP library |
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20 | USE wrk_nemo ! Memory allocation |
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21 | |
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22 | IMPLICIT NONE |
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23 | PRIVATE |
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24 | |
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25 | PUBLIC trd_tra ! called by all tra_... modules |
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26 | |
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27 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: trdtx, trdty, trdt ! use to store the temperature trends |
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28 | |
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29 | !! * Substitutions |
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30 | # include "domzgr_substitute.h90" |
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31 | # include "vectopt_loop_substitute.h90" |
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32 | !!---------------------------------------------------------------------- |
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33 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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34 | !! $Id$ |
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35 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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36 | !!---------------------------------------------------------------------- |
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37 | CONTAINS |
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38 | |
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39 | INTEGER FUNCTION trd_tra_alloc() |
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40 | !!---------------------------------------------------------------------------- |
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41 | !! *** FUNCTION trd_tra_alloc *** |
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42 | !!---------------------------------------------------------------------------- |
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43 | ALLOCATE( trdtx(jpi,jpj,jpk) , trdty(jpi,jpj,jpk) , trdt(jpi,jpj,jpk) , STAT= trd_tra_alloc ) |
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44 | ! |
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45 | IF( lk_mpp ) CALL mpp_sum ( trd_tra_alloc ) |
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46 | IF( trd_tra_alloc /= 0 ) CALL ctl_warn('trd_tra_alloc: failed to allocate arrays') |
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47 | END FUNCTION trd_tra_alloc |
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48 | |
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49 | |
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50 | SUBROUTINE trd_tra( kt, ctype, ktra, ktrd, ptrd, pun, ptra ) |
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51 | !!--------------------------------------------------------------------- |
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52 | !! *** ROUTINE trd_tra *** |
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53 | !! |
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54 | !! ** Purpose : pre-process tracer trends |
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55 | !! |
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56 | !! ** Method : - mask the trend |
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57 | !! - advection (ptra present) converte the incoming flux (U.T) |
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58 | !! into trend (U.T => -U.grat(T)=div(U.T)-T.div(U)) through a |
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59 | !! call to trd_tra_adv |
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60 | !! - 'TRA' case : regroup T & S trends |
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61 | !! - send the trends to trd_mod(_trc) for further processing |
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62 | !!---------------------------------------------------------------------- |
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63 | INTEGER , INTENT(in) :: kt ! time step |
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64 | CHARACTER(len=3) , INTENT(in) :: ctype ! tracers trends type 'TRA'/'TRC' |
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65 | INTEGER , INTENT(in) :: ktra ! tracer index |
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66 | INTEGER , INTENT(in) :: ktrd ! tracer trend index |
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67 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in) :: ptrd ! tracer trend or flux |
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68 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in), OPTIONAL :: pun ! now velocity |
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69 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in), OPTIONAL :: ptra ! now tracer variable |
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70 | ! |
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71 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ztrds |
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72 | !!---------------------------------------------------------------------- |
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73 | ! |
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74 | CALL wrk_alloc( jpi, jpj, jpk, ztrds ) |
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75 | ! |
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76 | IF( .NOT. ALLOCATED( trdtx ) ) THEN ! allocate trdtra arrays |
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77 | IF( trd_tra_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'trd_tra : unable to allocate arrays' ) |
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78 | ENDIF |
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79 | |
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80 | IF( ctype == 'TRA' .AND. ktra == jp_tem ) THEN !== Temperature trend ==! |
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81 | ! |
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82 | IF( PRESENT( ptra ) ) THEN ! advection: transform flux into trend |
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83 | SELECT CASE( ktrd ) |
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84 | CASE( jptra_trd_xad ) ; CALL trd_tra_adv( ptrd, pun, ptra, 'X', trdtx ) |
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85 | CASE( jptra_trd_yad ) ; CALL trd_tra_adv( ptrd, pun, ptra, 'Y', trdty ) |
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86 | CASE( jptra_trd_zad ) ; CALL trd_tra_adv( ptrd, pun, ptra, 'Z', trdt ) |
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87 | END SELECT |
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88 | ELSE ! other trends: |
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89 | trdt(:,:,:) = ptrd(:,:,:) * tmask(:,:,:) ! mask & store |
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90 | IF( ktrd == jptra_trd_bbc .OR. ktrd == jptra_trd_qsr ) THEN ! qsr, bbc: on temperature only |
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91 | ztrds(:,:,:) = 0._wp |
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92 | CALL trd_mod( trdt, ztrds, ktrd, ctype, kt ) ! send to trd_mod |
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93 | ENDIF |
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94 | ENDIF |
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95 | ! |
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96 | ENDIF |
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97 | |
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98 | IF( ctype == 'TRA' .AND. ktra == jp_sal ) THEN !== Salinity trends ==! |
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99 | ! |
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100 | IF( PRESENT( ptra ) ) THEN ! advection: transform the advective flux into a trend |
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101 | SELECT CASE( ktrd ) ! and send T & S trends to trd_mod |
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102 | CASE( jptra_trd_xad ) ; CALL trd_tra_adv( ptrd , pun , ptra, 'X' , ztrds ) |
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103 | CALL trd_mod ( trdtx, ztrds, ktrd, ctype, kt ) |
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104 | CASE( jptra_trd_yad ) ; CALL trd_tra_adv( ptrd , pun , ptra, 'Y' , ztrds ) |
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105 | ; CALL trd_mod ( trdty, ztrds, ktrd, ctype, kt ) |
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106 | CASE( jptra_trd_zad ) ; CALL trd_tra_adv( ptrd , pun , ptra, 'Z' , ztrds ) |
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107 | CALL trd_mod ( trdt , ztrds, ktrd, ctype, kt ) |
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108 | END SELECT |
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109 | ELSE ! other trends: mask and send T & S trends to trd_mod |
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110 | ztrds(:,:,:) = ptrd(:,:,:) * tmask(:,:,:) |
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111 | CALL trd_mod( trdt, ztrds, ktrd, ctype, kt ) |
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112 | ENDIF |
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113 | ! |
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114 | ENDIF |
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115 | |
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116 | IF( ctype == 'TRC' ) THEN !== passive tracer trend ==! |
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117 | ! |
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118 | IF( PRESENT( ptra ) ) THEN ! advection: transform flux into a trend |
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119 | SELECT CASE( ktrd ) |
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120 | CASE( jptra_trd_xad ) ; CALL trd_tra_adv( ptrd , pun , ptra, 'X', ztrds ) |
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121 | CASE( jptra_trd_yad ) ; CALL trd_tra_adv( ptrd , pun , ptra, 'Y', ztrds ) |
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122 | CASE( jptra_trd_zad ) ; CALL trd_tra_adv( ptrd , pun , ptra, 'Z', ztrds ) |
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123 | END SELECT |
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124 | ELSE ! other trends: mask |
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125 | ztrds(:,:,:) = ptrd(:,:,:) * tmask(:,:,:) |
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126 | END IF |
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127 | ! |
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128 | CALL trd_mod_trc( ztrds, ktra, ktrd, kt ) ! send trend to trd_mod_trc |
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129 | ! |
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130 | ENDIF |
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131 | ! |
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132 | CALL wrk_dealloc( jpi, jpj, jpk, ztrds ) |
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133 | ! |
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134 | END SUBROUTINE trd_tra |
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135 | |
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136 | |
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137 | SUBROUTINE trd_tra_adv( pf, pun, ptn, cdir, ptrd ) |
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138 | !!--------------------------------------------------------------------- |
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139 | !! *** ROUTINE trd_tra_adv *** |
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140 | !! |
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141 | !! ** Purpose : transformed a advective flux into a masked advective trends |
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142 | !! |
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143 | !! ** Method : use the following transformation: -div(U.T) = - U grad(T) + T.div(U) |
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144 | !! i-advective trends = -un. di-1[T] = -( di-1[fi] - tn di-1[un] ) |
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145 | !! j-advective trends = -un. di-1[T] = -( dj-1[fi] - tn dj-1[un] ) |
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146 | !! k-advective trends = -un. di+1[T] = -( dk+1[fi] - tn dk+1[un] ) |
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147 | !! where fi is the incoming advective flux. |
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148 | !!---------------------------------------------------------------------- |
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149 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in ) :: pf ! advective flux in one direction |
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150 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in ) :: pun ! now velocity in one direction |
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151 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in ) :: ptn ! now or before tracer |
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152 | CHARACTER(len=1) , INTENT(in ) :: cdir ! X/Y/Z direction |
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153 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT( out) :: ptrd ! advective trend in one direction |
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154 | ! |
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155 | INTEGER :: ji, jj, jk ! dummy loop indices |
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156 | INTEGER :: ii, ij, ik ! index shift as function of the direction |
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157 | !!---------------------------------------------------------------------- |
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158 | ! |
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159 | SELECT CASE( cdir ) ! shift depending on the direction |
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160 | CASE( 'X' ) ; ii = 1 ; ij = 0 ; ik = 0 ! i-trend |
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161 | CASE( 'Y' ) ; ii = 0 ; ij = 1 ; ik = 0 ! j-trend |
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162 | CASE( 'Z' ) ; ii = 0 ; ij = 0 ; ik =-1 ! k-trend |
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163 | END SELECT |
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164 | ! |
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165 | ! ! set to zero uncomputed values |
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166 | ptrd(jpi,:,:) = 0._wp ; ptrd(1,:,:) = 0._wp |
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167 | ptrd(:,jpj,:) = 0._wp ; ptrd(:,1,:) = 0._wp |
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168 | ptrd(:,:,jpk) = 0._wp |
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169 | ! |
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170 | DO jk = 1, jpkm1 ! advective trend |
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171 | DO jj = 2, jpjm1 |
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172 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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173 | ptrd(ji,jj,jk) = - ( pf (ji,jj,jk) - pf (ji-ii,jj-ij,jk-ik) & |
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174 | & - ( pun(ji,jj,jk) - pun(ji-ii,jj-ij,jk-ik) ) * ptn(ji,jj,jk) ) & |
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175 | & / ( e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) ) * tmask(ji,jj,jk) |
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176 | END DO |
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177 | END DO |
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178 | END DO |
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179 | ! |
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180 | END SUBROUTINE trd_tra_adv |
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181 | |
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182 | #else |
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183 | !!---------------------------------------------------------------------- |
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184 | !! Default case : Dummy module No trend diagnostics |
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185 | !!---------------------------------------------------------------------- |
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186 | USE par_oce ! ocean variables trends |
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187 | CONTAINS |
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188 | SUBROUTINE trd_tra( kt, ctype, ktra, ktrd, ptrd, pu, ptra ) |
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189 | !!---------------------------------------------------------------------- |
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190 | CHARACTER(len=3) , INTENT(in) :: ctype |
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191 | INTEGER , INTENT(in) :: kt, ktra, ktrd |
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192 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in) :: ptrd |
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193 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in), OPTIONAL :: pu, ptra ! Tracer variable |
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194 | WRITE(*,*) 'trd_tra: You should not have seen this print! error ?', & |
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195 | & ptrd(1,1,1), ptra(1,1,1), pu(1,1,1), ktrd, ktra, ctype, kt |
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196 | END SUBROUTINE trd_tra |
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197 | #endif |
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198 | |
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199 | !!====================================================================== |
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200 | END MODULE trdtra |
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