1 | MODULE zdfmxl |
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2 | !!====================================================================== |
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3 | !! *** MODULE zdfmxl *** |
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4 | !! Ocean physics: mixed layer depth |
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5 | !!====================================================================== |
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6 | |
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7 | !!---------------------------------------------------------------------- |
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8 | !! zdf_mxl : Compute the turbocline and mixed layer depths. |
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9 | !!---------------------------------------------------------------------- |
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10 | !! * Modules used |
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11 | USE oce ! ocean dynamics and tracers variables |
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12 | USE dom_oce ! ocean space and time domain variables |
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13 | USE zdf_oce ! ocean vertical physics |
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14 | USE in_out_manager ! I/O manager |
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15 | USE prtctl ! Print control |
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16 | |
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17 | IMPLICIT NONE |
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18 | PRIVATE |
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19 | |
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20 | !! * Routine accessibility |
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21 | PUBLIC zdf_mxl ! called by step.F90 |
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22 | |
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23 | !! * Shared module variables |
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24 | INTEGER, PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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25 | nmln !: number of level in the mixed layer |
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26 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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27 | hmld , & !: mixing layer depth (turbocline) (m) |
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28 | hmlp , & !: mixed layer depth (rho=rho0+zdcrit) (m) |
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29 | hmlpt !: mixed layer depth at t-points (m) |
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30 | |
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31 | !! * module variables |
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32 | REAL(wp) :: & |
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33 | avt_c = 5.e-4_wp, & ! Kz criterion for the turbocline depth |
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34 | rho_c = 0.01_wp ! density criterion for mixed layer depth |
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35 | |
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36 | !! * Substitutions |
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37 | # include "domzgr_substitute.h90" |
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38 | !!---------------------------------------------------------------------- |
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39 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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40 | !! $Header$ |
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41 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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42 | !!---------------------------------------------------------------------- |
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43 | |
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44 | CONTAINS |
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45 | |
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46 | # if defined key_autotasking |
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47 | !!---------------------------------------------------------------------- |
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48 | !! 'key_autotasking' j-k-i loop (j-slab) |
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49 | !!---------------------------------------------------------------------- |
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50 | |
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51 | SUBROUTINE zdf_mxl( kt ) |
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52 | !!---------------------------------------------------------------------- |
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53 | !! *** ROUTINE zdfmxl *** |
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54 | !! |
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55 | !! ** Purpose : Compute the turbocline depth and the mixed layer depth |
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56 | !! with a density criteria. |
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57 | !! |
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58 | !! ** Method : The turbocline depth is the depth at which the vertical |
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59 | !! eddy diffusivity coefficient (resulting from the vertical physics |
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60 | !! alone, not the isopycnal part, see trazdf.F) fall below a given |
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61 | !! value defined locally (avt_c here taken equal to 5 cm/s2) |
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62 | !! |
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63 | !! ** Action : |
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64 | !! |
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65 | !! History : |
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66 | !! 9.0 ! 03-08 (G. Madec) autotasking optimization |
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67 | !!---------------------------------------------------------------------- |
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68 | !! * Arguments |
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69 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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70 | |
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71 | !! * Local declarations |
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72 | INTEGER :: ji, jj, jk ! dummy loop indices |
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73 | INTEGER :: ik ! temporary integer |
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74 | INTEGER, DIMENSION(jpi,jpj) :: & |
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75 | imld ! temporary workspace |
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76 | !!---------------------------------------------------------------------- |
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77 | |
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78 | IF( kt == nit000 ) THEN |
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79 | IF(lwp) WRITE(numout,*) |
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80 | IF(lwp) WRITE(numout,*) 'zdf_mxl : mixed layer depth' |
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81 | IF(lwp) WRITE(numout,*) '~~~~~~~ auto-tasking case : j-k-i loop' |
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82 | IF(lwp) WRITE(numout,*) |
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83 | ENDIF |
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84 | |
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85 | ! ! =============== |
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86 | DO jj = 1, jpj ! Vertical slab |
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87 | ! ! =============== |
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88 | |
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89 | ! 1. Turbocline depth |
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90 | ! ------------------- |
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91 | ! last w-level at which avt<avt_c (starting from the bottom jk=jpk) |
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92 | ! (since avt(.,.,jpk)=0, we have jpk=< imld =< 2 ) |
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93 | DO jk = jpk, 2, -1 |
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94 | DO ji = 1, jpi |
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95 | IF( avt(ji,jj,jk) < avt_c ) imld(ji,jj) = jk |
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96 | END DO |
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97 | END DO |
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98 | |
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99 | ! Turbocline depth and sub-turbocline temperature |
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100 | DO ji = 1, jpi |
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101 | ik = imld(ji,jj) |
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102 | hmld (ji,jj) = fsdepw(ji,jj,ik) * tmask(ji,jj,1) |
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103 | END DO |
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104 | |
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105 | !!gm idea |
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106 | !! |
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107 | !!gm DO jk = jpk, 2, -1 |
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108 | !!gm DO ji = 1, jpi |
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109 | !!gm IF( avt(ji,jj,jk) < avt_c ) hmld(ji,jj) = fsdepw(ji,jj,jk) * tmask(ji,jj,1) |
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110 | !!gm END DO |
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111 | !!gm END DO |
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112 | !!gm |
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113 | |
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114 | ! 2. Mixed layer depth |
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115 | ! -------------------- |
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116 | ! Initialization to the number of w ocean point mbathy |
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117 | nmln(:,jj) = mbathy(:,jj) |
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118 | |
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119 | ! Last w-level at which rhop>=rho surf+rho_c (starting from jpk-1) |
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120 | ! (rhop defined at t-point, thus jk-1 for w-level just above) |
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121 | DO jk = jpkm1, 2, -1 |
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122 | DO ji = 1, jpi |
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123 | IF( rhop(ji,jj,jk) > rhop(ji,jj,1) + rho_c ) nmln(ji,jj) = jk |
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124 | END DO |
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125 | END DO |
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126 | |
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127 | ! Mixed layer depth |
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128 | DO ji = 1, jpi |
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129 | ik = nmln(ji,jj) |
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130 | hmlp (ji,jj) = fsdepw(ji,jj,ik) * tmask(ji,jj,1) |
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131 | hmlpt(ji,jj) = fsdept(ji,jj,ik-1) |
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132 | END DO |
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133 | ! ! =============== |
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134 | END DO ! End of slab |
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135 | ! ! =============== |
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136 | |
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137 | IF(ln_ctl) THEN |
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138 | CALL prt_ctl(tab2d_1=REAL(nmln,wp), clinfo1=' nmln : ', tab2d_2=hmld, clinfo2=' hmld : ', ovlap=1) |
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139 | ENDIF |
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140 | |
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141 | |
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142 | END SUBROUTINE zdf_mxl |
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143 | |
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144 | # else |
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145 | !!---------------------------------------------------------------------- |
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146 | !! Default option : k-j-i loop |
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147 | !!---------------------------------------------------------------------- |
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148 | |
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149 | SUBROUTINE zdf_mxl( kt ) |
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150 | !!---------------------------------------------------------------------- |
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151 | !! *** ROUTINE zdfmxl *** |
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152 | !! |
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153 | !! ** Purpose : Compute the turbocline depth and the mixed layer depth |
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154 | !! with density criteria. |
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155 | !! |
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156 | !! ** Method : The turbocline depth is the depth at which the vertical |
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157 | !! eddy diffusivity coefficient (resulting from the vertical physics |
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158 | !! alone, not the isopycnal part, see trazdf.F) fall below a given |
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159 | !! value defined locally (avt_c here taken equal to 5 cm/s2) |
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160 | !! |
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161 | !! ** Action : |
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162 | !! |
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163 | !! History : |
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164 | !! ! 94-11 (M. Imbard) Original code |
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165 | !! 8.0 ! 96-01 (E. Guilyardi) sub mixed layer temp. |
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166 | !! 8.1 ! 97-07 (G. Madec) optimization |
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167 | !! 8.5 ! 02-06 (G. Madec) F90: Free form and module |
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168 | !!---------------------------------------------------------------------- |
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169 | !! * Arguments |
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170 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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171 | |
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172 | !! * Local declarations |
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173 | INTEGER :: ji, jj, jk ! dummy loop indices |
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174 | INTEGER :: ik ! temporary integer |
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175 | INTEGER, DIMENSION(jpi,jpj) :: & |
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176 | imld ! temporary workspace |
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177 | !!---------------------------------------------------------------------- |
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178 | |
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179 | IF( kt == nit000 ) THEN |
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180 | IF(lwp) WRITE(numout,*) |
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181 | IF(lwp) WRITE(numout,*) 'zdf_mxl : mixed layer depth' |
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182 | IF(lwp) WRITE(numout,*) '~~~~~~~ ' |
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183 | ENDIF |
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184 | |
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185 | |
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186 | ! 1. Turbocline depth |
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187 | ! ------------------- |
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188 | ! last w-level at which avt<avt_c (starting from the bottom jk=jpk) |
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189 | ! (since avt(.,.,jpk)=0, we have jpk=< imld =< 2 ) |
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190 | DO jk = jpk, 2, -1 |
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191 | DO jj = 1, jpj |
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192 | DO ji = 1, jpi |
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193 | IF( avt(ji,jj,jk) < avt_c ) imld(ji,jj) = jk |
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194 | END DO |
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195 | END DO |
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196 | END DO |
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197 | |
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198 | ! Turbocline depth and sub-turbocline temperature |
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199 | DO jj = 1, jpj |
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200 | DO ji = 1, jpi |
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201 | ik = imld(ji,jj) |
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202 | hmld (ji,jj) = fsdepw(ji,jj,ik) * tmask(ji,jj,1) |
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203 | END DO |
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204 | END DO |
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205 | |
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206 | !!gm idea |
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207 | !! |
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208 | !!gm DO jk = jpk, 2, -1 |
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209 | !!gm DO jj = 1, jpj |
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210 | !!gm DO ji = 1, jpi |
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211 | !!gm IF( avt(ji,jj,jk) < avt_c ) hmld(ji,jj) = fsdepw(ji,jj,jk) * tmask(ji,jj,1) |
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212 | !!gm END DO |
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213 | !!gm END DO |
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214 | !!gm END DO |
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215 | !!gm |
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216 | |
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217 | ! 2. Mixed layer depth |
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218 | ! -------------------- |
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219 | ! Initialization to the number of w ocean point mbathy |
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220 | nmln(:,:) = mbathy(:,:) |
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221 | |
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222 | ! Last w-level at which rhop>=rho surf+rho_c (starting from jpk-1) |
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223 | ! (rhop defined at t-point, thus jk-1 for w-level just above) |
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224 | DO jk = jpkm1, 2, -1 |
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225 | DO jj = 1, jpj |
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226 | DO ji = 1, jpi |
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227 | IF( rhop(ji,jj,jk) > rhop(ji,jj,1) + rho_c ) nmln(ji,jj) = jk |
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228 | END DO |
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229 | END DO |
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230 | END DO |
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231 | |
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232 | ! Mixed layer depth |
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233 | DO jj = 1, jpj |
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234 | DO ji = 1, jpi |
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235 | ik = nmln(ji,jj) |
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236 | hmlp (ji,jj) = fsdepw(ji,jj,ik) * tmask(ji,jj,1) |
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237 | hmlpt(ji,jj) = fsdept(ji,jj,ik-1) |
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238 | END DO |
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239 | END DO |
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240 | |
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241 | IF(ln_ctl) THEN |
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242 | CALL prt_ctl(tab2d_1=REAL(nmln,wp), clinfo1=' nmln : ', tab2d_2=hmld, clinfo2=' hmld : ', ovlap=1) |
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243 | ENDIF |
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244 | |
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245 | END SUBROUTINE zdf_mxl |
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246 | #endif |
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247 | |
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248 | !!====================================================================== |
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249 | END MODULE zdfmxl |
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