1 | MODULE traldf_iso_grif |
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2 | !!============================================================================== |
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3 | !! *** MODULE traldf_iso_grif *** |
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4 | !! Ocean active tracers: horizontal component of the lateral tracer mixing trend |
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5 | !!============================================================================== |
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6 | !! History : 9.0 ! 06-10 (C. Harris) |
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7 | !!---------------------------------------------------------------------- |
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8 | #if defined key_ldfslp || defined key_esopa |
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9 | !!---------------------------------------------------------------------- |
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10 | !! 'key_ldfslp' slope of the lateral diffusive direction |
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11 | !!---------------------------------------------------------------------- |
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12 | !! tra_ldf_iso_grif : update the tracer trend with the horizontal |
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13 | !! component of a iso-neutral laplacian operator |
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14 | !! and with the vertical part of |
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15 | !! the isopycnal or geopotential s-coord. operator |
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16 | !! vector optimization, use k-j-i loops. |
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17 | !!---------------------------------------------------------------------- |
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18 | |
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19 | USE oce ! ocean dynamics and active tracers |
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20 | USE dom_oce ! ocean space and time domain |
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21 | USE ldftra_oce ! ocean active tracers: lateral physics |
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22 | USE trdmod ! ocean active tracers trends |
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23 | USE trdmod_oce ! ocean variables trends |
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24 | USE zdf_oce ! ocean vertical physics |
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25 | USE in_out_manager ! I/O manager |
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26 | USE ldfslp ! iso-neutral slopes |
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27 | USE diaptr ! poleward transport diagnostics |
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28 | USE prtctl ! Print control |
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29 | |
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30 | IMPLICIT NONE |
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31 | PRIVATE |
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32 | |
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33 | PUBLIC tra_ldf_iso_grif ! routine called by traldf.F90 |
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34 | |
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35 | !! * Substitutions |
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36 | # include "domzgr_substitute.h90" |
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37 | # include "ldftra_substitute.h90" |
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38 | # include "ldfeiv_substitute.h90" |
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39 | # include "vectopt_loop_substitute.h90" |
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40 | !!---------------------------------------------------------------------- |
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41 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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42 | !! $Header$ |
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43 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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44 | !!---------------------------------------------------------------------- |
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45 | |
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46 | CONTAINS |
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47 | |
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48 | SUBROUTINE tra_ldf_iso_grif( kt ) |
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49 | !!---------------------------------------------------------------------- |
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50 | !! *** ROUTINE tra_ldf_iso_grif *** |
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51 | !! |
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52 | !! ** Purpose : Compute the before horizontal tracer (t & s) diffusive |
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53 | !! trend for a laplacian tensor (except the dz[ dz[.] ] term) and |
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54 | !! add it to the general trend of tracer equation. |
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55 | !! |
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56 | !! ** Method : The horizontal component of the lateral diffusive trends |
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57 | !! is provided by a 2nd order operator rotated along neutral or geopo- |
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58 | !! tential surfaces to which an eddy induced advection can be added |
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59 | !! It is computed using before fields (forward in time) |
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60 | !! |
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61 | !! 1st part : masked horizontal derivative of T & S ( di[ t ] ) |
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62 | !! ======== with partial cell update if ln_zps=T. |
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63 | !! |
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64 | !! 2nd part : horizontal fluxes of the lateral mixing operator |
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65 | !! ======== |
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66 | !! take the horizontal divergence of the fluxes: |
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67 | !! difft = 1/(e1t*e2t*e3t) { di-1[ zftu ] + dj-1[ zftv ] } |
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68 | !! Add this trend to the general trend (ta,sa): |
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69 | !! ta = ta + difft |
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70 | !! |
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71 | !! 3rd part: vertical trends of the lateral mixing operator |
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72 | !! ======== (excluding the vertical flux proportional to dk[t] ) |
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73 | !! vertical fluxes associated with the rotated lateral mixing: |
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74 | |
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75 | !! take the horizontal divergence of the fluxes: |
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76 | !! difft = 1/(e1t*e2t*e3t) dk[ zftw ] |
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77 | !! Add this trend to the general trend (ta,sa): |
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78 | !! ta = ta + difft |
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79 | !! |
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80 | !! ** Action : |
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81 | !! Update (ta,sa) arrays with the before rotated diffusion trend |
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82 | !! (except the dk[ dk[.] ] term) |
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83 | !! |
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84 | !!---------------------------------------------------------------------- |
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85 | USE oce , zftv => ua ! use ua as workspace |
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86 | USE oce , zfsv => va ! use va as workspace |
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87 | !! |
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88 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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89 | !! |
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90 | INTEGER :: ji, jj, jk, ip, jp, kp ! dummy loop indices |
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91 | INTEGER :: iku, ikv ! temporary integer |
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92 | REAL(wp) :: zatempu, zdx, zta ! temporary scalars |
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93 | REAL(wp) :: zatempv, zdy, zsa ! " " |
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94 | REAL(wp) :: zslopec, zdsloper, zepsln ! " " |
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95 | REAL(wp) :: zsxe, za_sxe, zfact ! " " |
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96 | REAL(wp) :: zbtr ! " " |
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97 | REAL(wp), DIMENSION(2) :: zdelta ! 1D workspace |
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98 | REAL(wp), DIMENSION(jpi,jpj) :: zftu ! 2D workspace |
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99 | REAL(wp), DIMENSION(jpi,jpj) :: zfsu ! " " |
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100 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zdit, zdjt, zdkt ! 3D workspace |
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101 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zdis, zdjs, zdks ! " " |
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102 | |
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103 | |
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104 | |
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105 | !!---------------------------------------------------------------------- |
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106 | |
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107 | IF( kt == nit000 ) THEN |
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108 | IF(lwp) WRITE(numout,*) |
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109 | IF(lwp) WRITE(numout,*) 'tra_ldf_iso_grif : rotated laplacian diffusion operator' |
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110 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~~~' |
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111 | ENDIF |
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112 | |
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113 | IF ( .NOT. lk_traldf_eiv ) THEN |
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114 | fsaeiu(:,:,:)=0.0 |
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115 | fsaeiv(:,:,:)=0.0 |
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116 | fsaeiw(:,:,:)=0.0 |
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117 | ENDIF |
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118 | |
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119 | DO jk=1,jpkm1 |
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120 | DO jj=1,jpjm1 |
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121 | DO ji=1,fs_jpim1 |
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122 | ftu(ji,jj,jk)=ftud(ji,jj,jk)+ftu(ji,jj,jk)*(fsahtu(ji,jj,jk)-fsaeiu(ji,jj,jk)) |
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123 | fsu(ji,jj,jk)=fsud(ji,jj,jk)+fsu(ji,jj,jk)*(fsahtu(ji,jj,jk)-fsaeiu(ji,jj,jk)) |
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124 | ftv(ji,jj,jk)=ftvd(ji,jj,jk)+ftv(ji,jj,jk)*(fsahtv(ji,jj,jk)-fsaeiv(ji,jj,jk)) |
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125 | fsv(ji,jj,jk)=fsvd(ji,jj,jk)+fsv(ji,jj,jk)*(fsahtv(ji,jj,jk)-fsaeiv(ji,jj,jk)) |
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126 | END DO |
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127 | END DO |
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128 | END DO |
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129 | |
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130 | DO jk = 1, jpkm1 |
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131 | |
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132 | ! II.4 Second derivative (divergence) and add to the general trend |
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133 | ! ---------------------------------------------------------------- |
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134 | DO jj = 2 , jpjm1 |
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135 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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136 | zbtr= 1. / ( e1t(ji,jj)*e2t(ji,jj)*fse3t(ji,jj,jk) ) |
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137 | zta = zbtr * ( ftu(ji,jj,jk) - ftu(ji-1,jj,jk) + ftv(ji,jj,jk) - ftv(ji,jj-1,jk) ) |
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138 | zsa = zbtr * ( fsu(ji,jj,jk) - fsu(ji-1,jj,jk) + fsv(ji,jj,jk) - fsv(ji,jj-1,jk) ) |
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139 | ta (ji,jj,jk) = ta (ji,jj,jk) + zta |
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140 | sa (ji,jj,jk) = sa (ji,jj,jk) + zsa |
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141 | END DO |
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142 | END DO |
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143 | ! ! =============== |
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144 | END DO ! End of slab |
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145 | ! ! =============== |
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146 | |
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147 | IF( ln_diaptr .AND. ( MOD( kt, nf_ptr ) == 0 ) ) THEN ! Poleward diffusive heat and salt transports |
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148 | pht_ldf(:) = ptr_vj( zftv(:,:,:) ) |
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149 | pst_ldf(:) = ptr_vj( zfsv(:,:,:) ) |
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150 | ENDIF |
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151 | |
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152 | !!---------------------------------------------------------------------- |
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153 | !! III - vertical trend of T & S (extra diagonal terms only) |
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154 | !!---------------------------------------------------------------------- |
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155 | |
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156 | ! I.5 Divergence of vertical fluxes added to the general tracer trend |
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157 | ! ------------------------------------------------------------------- |
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158 | |
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159 | DO jk=1,jpk |
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160 | DO jj=2,jpjm1 |
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161 | DO ji=fs_2,fs_jpim1 |
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162 | tfw(ji,jj,jk)=tfw(ji,jj,jk)*(fsahtw(ji,jj,jk)+fsaeiw(ji,jj,jk)) |
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163 | sfw(ji,jj,jk)=sfw(ji,jj,jk)*(fsahtw(ji,jj,jk)+fsaeiw(ji,jj,jk)) |
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164 | END DO |
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165 | END DO |
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166 | END DO |
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167 | |
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168 | DO jk = 1, jpkm1 |
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169 | DO jj = 2, jpjm1 |
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170 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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171 | zbtr = 1. / ( e1t(ji,jj)*e2t(ji,jj)*fse3t(ji,jj,jk) ) |
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172 | zta = ( tfw(ji,jj,jk) - tfw(ji,jj,jk+1) ) * zbtr |
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173 | zsa = ( sfw(ji,jj,jk) - sfw(ji,jj,jk+1) ) * zbtr |
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174 | ta(ji,jj,jk) = ta(ji,jj,jk) + zta |
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175 | sa(ji,jj,jk) = sa(ji,jj,jk) + zsa |
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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 | DO jk=1,jpk |
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181 | DO jj=2,jpjm1 |
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182 | DO ji=fs_2,fs_jpim1 |
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183 | psix_eiv(ji,jj,jk) = psix_eiv(ji,jj,jk)*fsaeiu(ji,jj,jk) |
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184 | psiy_eiv(ji,jj,jk) = psiy_eiv(ji,jj,jk)*fsaeiv(ji,jj,jk) |
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185 | END DO |
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186 | END DO |
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187 | END DO |
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188 | |
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189 | END SUBROUTINE tra_ldf_iso_grif |
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190 | |
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191 | #else |
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192 | !!---------------------------------------------------------------------- |
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193 | !! default option : Dummy code NO rotation of the diffusive tensor |
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194 | !!---------------------------------------------------------------------- |
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195 | CONTAINS |
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196 | SUBROUTINE tra_ldf_iso_grif( kt ) ! Empty routine |
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197 | WRITE(*,*) 'tra_ldf_iso_grif: You should not have seen this print! error?', kt |
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198 | END SUBROUTINE tra_ldf_iso_grif |
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199 | #endif |
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200 | |
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201 | !!============================================================================== |
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202 | END MODULE traldf_iso_grif |
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