1 | |
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2 | CCC $Header$ |
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3 | CCC TOP 1.0 , LOCEAN-IPSL (2005) |
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4 | C This software is governed by CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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5 | C --------------------------------------------------------------------------- |
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6 | SUBROUTINE p4zsink2(wstmp,sinktemp,jn) |
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7 | CDIR$ LIST |
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8 | #if defined key_passivetrc && defined key_trc_pisces |
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9 | !!! |
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10 | !!! p4zsink2 : PISCES model |
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11 | !!! *********************** |
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12 | !!! |
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13 | !! |
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14 | !! PURPOSE : |
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15 | !! --------- |
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16 | !! Compute the sedimentation terms for the various sinking |
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17 | !! particles. The scheme used to compute the trends is based |
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18 | !! on MUSCL. |
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19 | !! |
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20 | !! METHOD : |
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21 | !! ------- |
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22 | !! this ROUTINE compute not exactly the advection but the |
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23 | !! transport term, i.e. div(u*tra). |
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24 | !! |
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25 | !! |
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26 | !! REFERENCES : |
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27 | !! ---------- |
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28 | !! |
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29 | !! References : |
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30 | !! Estubier, A., and M. Levy, Notes Techn. Pole de Modelisation |
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31 | !! IPSL, Sept. 2000 (http://www.lodyc.jussieu.fr/opa) |
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32 | !! |
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33 | !! |
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34 | !! MODIFICATIONS: |
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35 | !! -------------- |
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36 | !! original : 06-00 (A.Estublier) |
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37 | !! modifications : 2004 (O. Aumont) |
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38 | !! |
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39 | !!---------------------------------------------------------------------- |
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40 | CC ---------------------------------------------------------------- |
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41 | CC parameters and commons |
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42 | CC ====================== |
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43 | CDIR$ NOLIST |
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44 | USE oce_trc |
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45 | USE trp_trc |
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46 | USE sms |
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47 | IMPLICIT NONE |
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48 | #include "domzgr_substitute.h90" |
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49 | CDIR$ LIST |
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50 | CC----------------------------------------------------------------- |
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51 | CC local declarations |
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52 | CC ================== |
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53 | C |
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54 | INTEGER ji,jj,jk,jn |
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55 | REAL ztraz(jpi,jpj,jpk),zakz(jpi,jpj,jpk) |
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56 | REAL zkz(jpi,jpj,jpk) |
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57 | REAL zigma,zew,zstep,zign |
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58 | REAL wstmp(jpi,jpj,jpk),sinktemp(jpi,jpj,jpk) |
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59 | REAL wstmp2(jpi,jpj,jpk) |
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60 | |
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61 | !!!--------------------------------------------------------------------- |
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62 | !!! OPA8, LODYC (01/00) |
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63 | !!!--------------------------------------------------------------------- |
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64 | ! 1. Initialization |
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65 | ! -------------- |
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66 | |
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67 | zstep = rfact2 |
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68 | |
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69 | ztraz = 0 |
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70 | zkz = 0 |
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71 | zakz = 0. |
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72 | |
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73 | do jk=1,jpk-1 |
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74 | wstmp2(:,:,jk+1)=-wstmp(:,:,jk)/rjjss*tmask(:,:,jk+1) |
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75 | # if defined key_off_degrad |
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76 | & *facvol(:,:,jk) |
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77 | # endif |
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78 | end do |
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79 | |
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80 | wstmp2(:,:,1)=0. |
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81 | ! |
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82 | ! 3. Vertical advective flux |
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83 | !------------------------------- |
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84 | ! ... first guess of the slopes |
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85 | ! ... interior values |
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86 | ! |
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87 | DO jk=2,jpkm1 |
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88 | ztraz(:,:,jk) = (trn(:,:,jk-1,jn) - trn(:,:,jk,jn)) |
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89 | $ *tmask(:,:,jk) |
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90 | ENDDO |
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91 | ! |
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92 | ! slopes |
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93 | ! |
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94 | DO jk=2,jpkm1 |
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95 | DO jj = 1,jpj |
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96 | DO ji = 1, jpi |
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97 | zign = 0.5*(sign(1.,ztraz(ji,jj,jk)*ztraz(ji,jj,jk+1))+1) |
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98 | zakz(ji,jj,jk) = 0.5*(ztraz(ji,jj,jk) |
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99 | $ +ztraz(ji,jj,jk+1))*zign |
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100 | ENDDO |
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101 | ENDDO |
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102 | ENDDO |
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103 | ! |
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104 | ! Slopes limitation |
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105 | ! |
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106 | DO jk=2,jpkm1 |
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107 | DO jj = 1,jpj |
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108 | DO ji = 1,jpi |
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109 | zakz(ji,jj,jk) = sign(1.,zakz(ji,jj,jk)) * |
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110 | $ min(abs(zakz(ji,jj,jk)), |
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111 | $ 2.*abs(ztraz(ji,jj,jk+1)), |
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112 | $ 2.*abs(ztraz(ji,jj,jk))) |
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113 | ENDDO |
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114 | ENDDO |
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115 | ENDDO |
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116 | |
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117 | ! vertical advective flux |
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118 | DO jk=1,jpkm1 |
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119 | DO jj = 1,jpj |
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120 | DO ji = 1, jpi |
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121 | zigma = wstmp2(ji,jj,jk+1)*zstep/fse3w(ji,jj,jk+1) |
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122 | zew = wstmp2(ji,jj,jk+1) |
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123 | sinktemp(ji,jj,jk+1) = -zew*(trn(ji,jj,jk,jn) |
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124 | $ -0.5*(1+zigma)*zakz(ji,jj,jk))*zstep |
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125 | ENDDO |
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126 | ENDDO |
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127 | ENDDO |
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128 | ! |
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129 | ! Boundary conditions |
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130 | ! |
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131 | sinktemp(:,:,1)=0. |
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132 | sinktemp(:,:,jpk)=0. |
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133 | C |
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134 | DO jk=1,jpkm1 |
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135 | DO jj = 1,jpj |
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136 | DO ji = 1, jpi |
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137 | ! |
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138 | trn(ji,jj,jk,jn) = trn(ji,jj,jk,jn) |
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139 | & + (sinktemp(ji,jj,jk)-sinktemp(ji,jj,jk+1)) |
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140 | & /fse3t(ji,jj,jk) |
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141 | ! |
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142 | ENDDO |
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143 | ENDDO |
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144 | ENDDO |
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145 | ! |
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146 | trb(:,:,:,jn)=trn(:,:,:,jn) |
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147 | ! |
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148 | #endif |
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149 | C |
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150 | RETURN |
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151 | END |
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