1 | MODULE sedadv |
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2 | !!====================================================================== |
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3 | !! *** MODULE sedadv *** |
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4 | !! Sediment : vertical advection and burial |
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5 | !!===================================================================== |
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6 | !! * Modules used |
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7 | !!---------------------------------------------------------------------- |
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8 | !! sed_adv : |
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9 | !!---------------------------------------------------------------------- |
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10 | USE sed ! sediment global variable |
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11 | USE lib_mpp ! distribued memory computing library |
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12 | |
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13 | IMPLICIT NONE |
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14 | PRIVATE |
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15 | |
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16 | PUBLIC sed_adv |
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17 | PUBLIC sed_adv_alloc |
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18 | |
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19 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: dvolsp, dvolsm |
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20 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: c2por, ckpor |
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21 | |
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22 | REAL(wp) :: cpor |
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23 | REAL(wp) :: por1clay |
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24 | REAL(wp) :: eps = 1.e-13 |
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25 | |
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26 | !! $Id$ |
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27 | CONTAINS |
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28 | |
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29 | SUBROUTINE sed_adv( kt ) |
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30 | !!------------------------------------------------------------------------- |
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31 | !! *** ROUTINE sed_adv *** |
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32 | !! |
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33 | !! ** Purpose : vertical solid sediment advection and burial |
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34 | !! |
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35 | !! ** Method : At each grid point the 1-dimensional solid sediment column |
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36 | !! is shifted according the rain added to the top layer and |
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37 | !! the gaps produced through redissolution so that in the end |
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38 | !! the original sediment mixed layer geometry is reestablished. |
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39 | !! |
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40 | !! |
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41 | !! History : |
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42 | !! ! 98-08 (E. Maier-Reimer, Christoph Heinze ) Original code |
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43 | !! ! 04-10 (N. Emprin, M. Gehlen ) F90 |
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44 | !! ! 06-04 (C. Ethe) Re-organization |
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45 | !!------------------------------------------------------------------------- |
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46 | !!* Arguments |
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47 | INTEGER, INTENT(in) :: & |
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48 | kt ! time step |
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49 | ! * local variables |
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50 | INTEGER :: ji, jk, js |
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51 | INTEGER :: jn, ntimes, nztime, ikwneg |
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52 | |
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53 | REAL(wp), DIMENSION(jpksed,jpsol) :: zsolcpno |
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54 | REAL(wp), DIMENSION(jpksed) :: zfilled, zfull, zfromup, zempty |
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55 | REAL(wp), DIMENSION(jpoce,jpksed) :: zgap, zwb |
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56 | REAL(wp), DIMENSION(jpoce,jpsol) :: zrainrf |
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57 | REAL(wp), DIMENSION(: ), ALLOCATABLE :: zraipush |
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58 | |
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59 | REAL(wp) :: zkwnup, zkwnlo, zfrac, zfromce, zrest, sumtot, zsumtot1 |
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60 | |
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61 | !------------------------------------------------------------------------ |
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62 | |
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63 | |
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64 | IF( ln_timing ) CALL timing_start('sed_adv') |
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65 | ! |
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66 | IF( kt == nitsed000 ) THEN |
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67 | IF (lwp) THEN |
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68 | WRITE(numsed,*) ' ' |
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69 | WRITE(numsed,*) ' sed_adv : vertical sediment advection ' |
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70 | WRITE(numsed,*) ' ' |
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71 | ENDIF |
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72 | por1clay = denssol * por1(jpksed) * dz(jpksed) |
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73 | cpor = por1(jpksed) / por1(2) |
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74 | DO jk = 2, jpksed |
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75 | c2por(jk) = por1(2) / por1(jk) |
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76 | ckpor(jk) = por1(jpksed) / por1(jk) |
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77 | ENDDO |
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78 | DO jk = jpksedm1, 2, -1 |
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79 | dvolsp(jk) = vols(jk+1) / vols(jk) |
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80 | ENDDO |
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81 | DO jk = 3, jpksed |
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82 | dvolsm(jk) = vols(jk-1) / vols(jk) |
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83 | ENDDO |
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84 | ENDIF |
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85 | |
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86 | ! Initialization of data for mass balance calculation |
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87 | !--------------------------------------------------- |
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88 | fromsed(:,:) = 0. |
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89 | tosed (:,:) = 0. |
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90 | rloss (:,:) = 0. |
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91 | ikwneg = 1 |
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92 | nztime = jpksed |
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93 | |
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94 | ALLOCATE( zraipush(nztime) ) |
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95 | |
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96 | ! Initiate gap |
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97 | !-------------- |
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98 | zgap(:,:) = 0. |
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99 | DO js = 1, jpsol |
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100 | DO jk = 1, jpksed |
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101 | DO ji = 1, jpoce |
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102 | zgap(ji,jk) = zgap(ji,jk) + solcp(ji,jk,js) |
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103 | END DO |
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104 | ENDDO |
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105 | ENDDO |
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106 | |
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107 | zgap(1:jpoce,1:jpksed) = 1. - zgap(1:jpoce,1:jpksed) |
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108 | |
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109 | ! Initiate burial rates |
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110 | !----------------------- |
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111 | zwb(:,:) = 0. |
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112 | DO jk = 2, jpksed |
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113 | zfrac = dtsed / ( denssol * por1(jk) ) |
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114 | DO ji = 1, jpoce |
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115 | zwb(ji,jk) = zfrac * raintg(ji) |
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116 | END DO |
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117 | ENDDO |
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118 | |
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119 | |
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120 | DO ji = 1, jpoce |
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121 | zwb(ji,2) = zwb(ji,2) - zgap(ji,2) * dz(2) |
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122 | ENDDO |
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123 | |
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124 | DO jk = 3, jpksed |
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125 | zfrac = por1(jk-1) / por1(jk) |
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126 | DO ji = 1, jpoce |
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127 | zwb(ji,jk) = zwb(ji,jk-1) * zfrac - zgap(ji,jk) * dz(jk) |
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128 | END DO |
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129 | ENDDO |
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130 | |
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131 | zrainrf(:,:) = 0. |
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132 | DO ji = 1, jpoce |
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133 | IF( raintg(ji) /= 0. ) & |
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134 | & zrainrf(ji,:) = rainrg(ji,:) / raintg(ji) |
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135 | ENDDO |
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136 | |
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137 | |
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138 | ! Computation of full and empty solid fraction in each layer |
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139 | ! for all 'burial' case |
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140 | !---------------------------------------------------------- |
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141 | |
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142 | |
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143 | DO ji = 1, jpoce |
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144 | |
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145 | ! computation of total weight fraction in sediment |
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146 | !------------------------------------------------- |
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147 | zfilled(:) = 0. |
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148 | DO js = 1, jpsol |
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149 | DO jk = 2, jpksed |
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150 | zfilled(jk) = zfilled(jk) + solcp(ji,jk,js) |
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151 | ENDDO |
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152 | ENDDO |
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153 | |
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154 | DO js = 1, jpsol |
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155 | DO jk = 2, jpksed |
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156 | zsolcpno(jk,js) = solcp(ji,jk,js) / zfilled(jk) |
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157 | ENDDO |
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158 | ENDDO |
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159 | |
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160 | ! burial 3 cases: |
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161 | ! zwb > 0 ==> rain > total rection loss |
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162 | ! zwb = 0 ==> rain = 0 |
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163 | ! zwb < 0 ==> rain > 0 and rain < total reaction loss |
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164 | !---------------------------------------------------------------- |
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165 | |
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166 | IF( zwb(ji,jpksed) > 0. ) THEN |
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167 | |
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168 | zfull (jpksed) = zfilled(jpksed) |
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169 | zempty(jpksed) = 1. - zfull(jpksed) |
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170 | DO jk = jpksedm1, 2, -1 |
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171 | zfull (jk) = zfilled(jk) |
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172 | zfull (jk) = zfull(jk) - zempty(jk+1) * dvolsp(jk) |
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173 | zempty(jk) = 1. - zfull(jk) |
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174 | ENDDO |
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175 | |
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176 | ! Computation of solid sediment species |
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177 | !-------------------------------------- |
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178 | ! push entire sediment column downward to account rest of rain |
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179 | DO js = 1, jpsol |
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180 | DO jk = jpksed, 3, -1 |
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181 | solcp(ji,jk,js) = zfull(jk) * zsolcpno(jk,js) + zempty(jk) * zsolcpno(jk-1,js) |
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182 | ENDDO |
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183 | |
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184 | solcp(ji,2,js) = zfull(2) * zsolcpno(2,js) + zempty(2) * zrainrf(ji,js) |
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185 | |
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186 | DO jk = 2, jpksed |
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187 | zsolcpno(jk,js) = solcp(ji,jk,js) |
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188 | END DO |
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189 | ENDDO |
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190 | |
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191 | zrest = zwb(ji,jpksed) * cpor |
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192 | ! what is remaining is less than dz(2) |
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193 | IF( zrest <= dz(2) ) THEN |
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194 | |
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195 | zfromup(2) = zrest / dz(2) |
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196 | DO jk = 3, jpksed |
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197 | zfromup(jk) = zwb(ji,jpksed) * ckpor(jk) / dz(jk) |
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198 | ENDDO |
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199 | DO js = 1, jpsol |
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200 | zfromce = 1. - zfromup(2) |
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201 | solcp(ji,2,js) = zfromce * zsolcpno(2,js) + zfromup(2) * zrainrf(ji,js) |
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202 | DO jk = 3, jpksed |
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203 | zfromce = 1. - zfromup(jk) |
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204 | solcp(ji,jk,js) = zfromce * zsolcpno(jk,js) + zfromup(jk) * zsolcpno(jk-1,js) |
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205 | ENDDO |
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206 | fromsed(ji,js) = 0. |
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207 | ! quantities to push in deeper sediment |
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208 | tosed (ji,js) = zsolcpno(jpksed,js) & |
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209 | & * zwb(ji,jpksed) * denssol * por1(jpksed) |
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210 | ENDDO |
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211 | |
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212 | ELSE ! what is remaining is great than dz(2) |
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213 | |
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214 | ntimes = INT( zrest / dz(2) ) + 1 |
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215 | IF( ntimes > nztime ) CALL ctl_stop( 'STOP', 'sed_adv : rest too large ' ) |
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216 | zraipush(1) = dz(2) |
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217 | zrest = zrest - zraipush(1) |
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218 | DO jn = 2, ntimes |
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219 | IF( zrest >= dz(2) ) THEN |
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220 | zraipush(jn) = dz(2) |
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221 | zrest = zrest - zraipush(jn) |
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222 | ELSE |
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223 | zraipush(jn) = zrest |
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224 | zrest = 0. |
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225 | ENDIF |
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226 | ENDDO |
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227 | |
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228 | DO jn = 1, ntimes |
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229 | DO js = 1, jpsol |
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230 | DO jk = 2, jpksed |
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231 | zsolcpno(jk,js) = solcp(ji,jk,js) |
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232 | END DO |
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233 | ENDDO |
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234 | |
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235 | zfromup(2) = zraipush(jn) / dz(2) |
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236 | DO jk = 3, jpksed |
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237 | zfromup(jk) = ( zraipush(jn) / dz(jk) ) * c2por(jk) |
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238 | ENDDO |
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239 | |
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240 | DO js = 1, jpsol |
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241 | zfromce = 1. - zfromup(2) |
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242 | solcp(ji,2,js) = zfromce * zsolcpno(2,js) + zfromup(2) * zrainrf(ji,js) |
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243 | DO jk = 3, jpksed |
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244 | zfromce = 1. - zfromup(jk) |
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245 | solcp(ji,jk,js) = zfromce * zsolcpno(jk,js) + zfromup(jk) * zsolcpno(jk-1,js) |
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246 | ENDDO |
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247 | fromsed(ji,js) = 0. |
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248 | tosed (ji,js) = tosed(ji,js) + zsolcpno(jpksed,js) * zraipush(jn) & |
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249 | & * denssol * por1(2) |
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250 | ENDDO |
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251 | ENDDO |
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252 | |
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253 | ENDIF |
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254 | |
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255 | ELSE IF( raintg(ji) < eps ) THEN ! rain = 0 |
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256 | !! Nadia rloss(:,:) = rainrm(:,:) bug ?????? |
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257 | |
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258 | rloss(ji,1:jpsol) = rainrm(ji,1:jpsol) |
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259 | |
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260 | zfull (2) = zfilled(2) |
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261 | zempty(2) = 1. - zfull(2) |
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262 | DO jk = 3, jpksed |
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263 | zfull (jk) = zfilled(jk) |
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264 | zfull (jk) = zfull (jk) - zempty(jk-1) * dvolsm(jk) |
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265 | zempty(jk) = 1. - zfull(jk) |
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266 | ENDDO |
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267 | |
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268 | ! fill boxes with weight fraction from underlying box |
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269 | DO js = 1, jpsol |
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270 | DO jk = 2, jpksedm1 |
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271 | solcp(ji,jk,js) = zfull(jk) * zsolcpno(jk,js) + zempty(jk) * zsolcpno(jk+1,js) |
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272 | END DO |
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273 | solcp(ji,jpksed,js) = zsolcpno(jpksed,js) * zfull(jpksed) |
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274 | tosed (ji,js) = 0. |
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275 | fromsed(ji,js) = 0. |
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276 | ENDDO |
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277 | ! for the last layer, one make go up clay |
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278 | solcp(ji,jpksed,jsclay) = solcp(ji,jpksed,jsclay) + zempty(jpksed) * 1. |
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279 | fromsed(ji,jsclay) = zempty(jpksed) * 1. * por1clay |
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280 | ELSE ! rain > 0 and rain < total reaction loss |
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281 | |
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282 | |
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283 | DO jk = 2, jpksed |
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284 | zfull (jk) = zfilled(jk) |
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285 | zempty(jk) = 1. - zfull(jk) |
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286 | ENDDO |
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287 | |
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288 | ! Determination of indice of layer - ikwneg - where advection is reversed |
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289 | !------------------------------------------------------------------------ |
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290 | iflag: DO jk = 2, jpksed |
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291 | IF( zwb(ji,jk) < 0. ) THEN |
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292 | ikwneg = jk |
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293 | EXIT iflag |
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294 | ENDIF |
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295 | ENDDO iflag |
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296 | |
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297 | ! computation of zfull and zempty |
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298 | ! 3 cases : a/ ikwneg=2, b/ikwneg=3...jpksedm1, c/ikwneg=jpksed |
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299 | !------------------------------------------------------------- |
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300 | IF( ikwneg == 2 ) THEN ! advection is reversed in the first sediment layer |
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301 | |
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302 | zkwnup = rdtsed(ikwneg) * raintg(ji) / dz(ikwneg) |
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303 | zkwnlo = ABS( zwb(ji,ikwneg) ) / dz(ikwneg) |
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304 | zfull (ikwneg+1) = zfilled(ikwneg+1) - zkwnlo * dvolsm(ikwneg+1) |
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305 | zempty(ikwneg+1) = 1. - zfull(ikwneg+1) |
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306 | DO jk = ikwneg+2, jpksed |
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307 | zfull (jk) = zfilled(jk) - zempty(jk-1) * dvolsm(jk) |
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308 | zempty(jk) = 1. - zfull(jk) |
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309 | ENDDO |
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310 | DO js = 1, jpsol |
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311 | solcp(ji,2,js) = zfull(2) * zsolcpno(2,js)+ zkwnlo * zsolcpno(3,js) & |
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312 | & + zkwnup * zrainrf(ji,js) |
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313 | DO jk = 3, jpksedm1 |
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314 | solcp(ji,jk,js) = zfull(jk) * zsolcpno(jk,js) + zempty(jk) * zsolcpno(jk+1,js) |
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315 | ENDDO |
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316 | solcp(ji,jpksed,js) = zfull(jpksed) * zsolcpno(jpksed,js) |
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317 | tosed(ji,js) = 0. |
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318 | fromsed(ji,js) = 0. |
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319 | ENDDO |
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320 | solcp(ji,jpksed,jsclay) = solcp(ji,jpksed,jsclay) + zempty(jpksed) * 1. |
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321 | !! C. Heinze fromsed(ji,jsclay) = zempty(jpksed) * 1. * denssol * por1(jpksed) / mol_wgt(jsclay) |
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322 | fromsed(ji,jsclay) = zempty(jpksed) * 1. * por1clay |
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323 | |
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324 | ELSE IF( ikwneg == jpksed ) THEN |
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325 | |
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326 | zkwnup = ABS( zwb(ji,ikwneg-1) ) * dvolsm(ikwneg) / dz(ikwneg) |
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327 | zkwnlo = ABS( zwb(ji,ikwneg) ) / dz(ikwneg) |
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328 | zfull (ikwneg-1) = zfilled(ikwneg-1) - zkwnup * dvolsp(ikwneg-1) |
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329 | zempty(ikwneg-1) = 1. - zfull(ikwneg-1) |
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330 | DO jk = ikwneg-2, 2, -1 |
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331 | zfull (jk) = zfilled(jk) - zempty(jk+1) * dvolsp(jk) |
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332 | zempty(jk) = 1. - zfull(jk) |
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333 | ENDDO |
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334 | DO js = 1, jpsol |
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335 | solcp(ji,2,js) = zfull(2) * zsolcpno(2,js) + zempty(2) * zrainrf(ji,js) |
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336 | ENDDO |
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337 | DO js = 1, jpsol |
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338 | DO jk = jpksedm1, 3, -1 |
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339 | solcp(ji,jk,js) = zfull(jk) * zsolcpno(jk,js) + zempty(jk) * zsolcpno(jk-1,js) |
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340 | ENDDO |
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341 | solcp(ji,jpksed,js) = zfull(jpksed) * zsolcpno(jpksed,js) & |
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342 | & + zkwnup * zsolcpno(jpksedm1,js) |
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343 | tosed(ji,js) = 0. |
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344 | fromsed(ji,js) = 0. |
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345 | ENDDO |
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346 | solcp(ji,jpksed,jsclay) = solcp(ji,jpksed,jsclay) + zkwnlo * 1. |
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347 | ! Heinze fromsed(ji,jsclay) = zkwnlo * 1. * denssol * por1(jpksed) / mol_wgt(jsclay) |
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348 | fromsed(ji,jsclay) = zkwnlo * 1.* por1clay |
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349 | ELSE ! 2 < ikwneg(ji) <= jpksedm1 |
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350 | |
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351 | zkwnup = ABS( zwb(ji,ikwneg-1) ) * por1(ikwneg-1) / ( dz(ikwneg) * por1(ikwneg) ) |
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352 | zkwnlo = ABS( zwb(ji,ikwneg) ) / dz(ikwneg) |
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353 | |
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354 | IF( ikwneg > 3 ) THEN |
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355 | |
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356 | zfull (ikwneg-1) = zfilled(ikwneg-1) - zkwnup * dvolsp(ikwneg-1) |
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357 | zempty(ikwneg-1) = 1. - zfull(ikwneg-1) |
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358 | DO jk = ikwneg-2, 2, -1 |
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359 | zfull (jk) = zfilled(jk) - zempty(jk+1) * dvolsp(jk) |
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360 | zempty(jk) = 1. - zfull(jk) |
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361 | ENDDO |
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362 | DO js = 1, jpsol |
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363 | solcp(ji,2,js) = zfull(2) * zsolcpno(2,js) + zempty(2) * zrainrf(ji,js) |
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364 | ENDDO |
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365 | DO js = 1, jpsol |
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366 | DO jk = ikwneg-1, 3, -1 |
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367 | solcp(ji,jk,js) = zfull(jk) * zsolcpno(jk,js) + zempty(jk) * zsolcpno(jk-1,js) |
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368 | ENDDO |
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369 | ENDDO |
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370 | ELSE ! ikw = 3 |
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371 | |
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372 | |
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373 | zfull (2) = zfilled(2) - zkwnup * dvolsm(3) |
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374 | zempty(2) = 1. - zfull(2) |
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375 | DO js = 1, jpsol |
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376 | solcp(ji,2,js) = zfull(2) * zsolcpno(2,js) + zempty(2) * zrainrf(ji,js) |
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377 | ENDDO |
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378 | ENDIF |
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379 | |
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380 | IF( ikwneg < jpksedm1) THEN |
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381 | |
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382 | zfull (ikwneg+1) = zfilled(ikwneg+1) - zkwnlo * dvolsm(ikwneg+1) |
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383 | zempty(ikwneg+1) = 1. - zfull(ikwneg+1) |
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384 | DO jk = ikwneg+2, jpksed |
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385 | zfull (jk) = zfilled(jk) - zempty(jk-1) * dvolsm(jk) |
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386 | zempty(jk) = 1. - zfull(jk) |
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387 | ENDDO |
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388 | DO js = 1, jpsol |
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389 | DO jk = ikwneg+1, jpksedm1 |
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390 | solcp(ji,jk,js) = zfull(jk) * zsolcpno(jk,js) + zempty(jk) * zsolcpno(jk+1,js) |
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391 | ENDDO |
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392 | solcp(ji,jpksed,js) = zfull(jpksed) * zsolcpno(jpksed,js) |
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393 | ENDDO |
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394 | solcp(ji,jpksed,jsclay) = solcp(ji,jpksed,jsclay) + zempty(jpksed) * 1. |
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395 | ELSE |
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396 | |
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397 | zfull (jpksed) = zfilled(jpksed) - zkwnlo * dvolsm(jpksed) |
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398 | zempty(jpksed) = 1. - zfull(jpksed) |
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399 | DO js = 1, jpsol |
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400 | solcp(ji,jpksed,js) = zfull(jpksed) * zsolcpno(jpksed,js) |
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401 | ENDDO |
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402 | solcp(ji,jpksed,jsclay) = solcp(ji,jpksed,jsclay) + zempty(jpksed) * 1. |
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403 | ENDIF ! jpksedm1 |
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404 | |
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405 | ! ikwneg = jpksedm1 ; ikwneg+1 = jpksed ; ikwneg-1 = jpksed - 2 |
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406 | DO js = 1, jpsol |
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407 | solcp(ji,ikwneg,js) = zfull(ikwneg) * zsolcpno(ikwneg ,js) & |
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408 | & + zkwnup * zsolcpno(ikwneg-1,js) & |
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409 | & + zkwnlo * zsolcpno(ikwneg+1,js) |
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410 | tosed (ji,js) = 0. |
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411 | fromsed(ji,js) = 0. |
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412 | ENDDO |
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413 | ! Heinze fromsed(ji,jsclay) = zempty * 1. * denssol * por1(jpksed) / mol_wgt(jsclay) |
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414 | fromsed(ji,jsclay) = zempty(jpksed) * 1. * por1clay |
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415 | |
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416 | ENDIF ! ikwneg(ji) = 2 |
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417 | ENDIF ! zwb > 0 |
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418 | ENDDO ! ji = 1, jpoce |
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419 | |
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420 | rainrm(:,:) = 0. |
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421 | rainrg(:,:) = 0. |
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422 | raintg(:) = 0. |
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423 | |
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424 | DEALLOCATE( zraipush ) |
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425 | |
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426 | IF( ln_timing ) CALL timing_stop('sed_adv') |
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427 | |
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428 | END SUBROUTINE sed_adv |
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429 | |
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430 | |
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431 | INTEGER FUNCTION sed_adv_alloc() |
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432 | !!---------------------------------------------------------------------- |
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433 | !! *** ROUTINE p4z_prod_alloc *** |
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434 | !!---------------------------------------------------------------------- |
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435 | ALLOCATE( dvolsp(jpksed), dvolsm(jpksed), c2por(jpksed), & |
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436 | & ckpor(jpksed) , STAT = sed_adv_alloc ) |
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437 | ! |
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438 | IF( sed_adv_alloc /= 0 ) CALL ctl_warn('sed_adv_alloc : failed to allocate arrays.') |
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439 | ! |
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440 | END FUNCTION sed_adv_alloc |
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441 | |
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442 | END MODULE sedadv |
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