1 | MODULE tradmp |
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2 | !!====================================================================== |
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3 | !! *** MODULE tradmp *** |
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4 | !! Ocean physics: internal restoring trend on active tracers (T and S) |
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5 | !!====================================================================== |
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6 | !! History : OPA ! 1991-03 (O. Marti, G. Madec) Original code |
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7 | !! ! 1992-06 (M. Imbard) doctor norme |
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8 | !! ! 1998-07 (M. Imbard, G. Madec) ORCA version |
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9 | !! 7.0 ! 2001-02 (M. Imbard) add distance to coast, Original code |
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10 | !! 8.1 ! 2001-02 (G. Madec, E. Durand) cleaning |
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11 | !! NEMO 1.0 ! 2002-08 (G. Madec, E. Durand) free form + modules |
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12 | !! 3.2 ! 2009-08 (G. Madec, C. Talandier) DOCTOR norm for namelist parameter |
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13 | !! 3.3 ! 2010-06 (C. Ethe, G. Madec) merge TRA-TRC |
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14 | !! 3.4 ! 2011-04 (G. Madec, C. Ethe) Merge of dtatem and dtasal + suppression of CPP keys |
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15 | !! 3.6 ! 2015-06 (T. Graham) read restoring coefficient in a file |
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16 | !! 3.7 ! 2015-10 (G. Madec) remove useless trends arrays |
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17 | !!---------------------------------------------------------------------- |
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18 | |
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19 | !!---------------------------------------------------------------------- |
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20 | !! tra_dmp_alloc : allocate tradmp arrays |
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21 | !! tra_dmp : update the tracer trend with the internal damping |
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22 | !! tra_dmp_init : initialization, namlist read, parameters control |
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23 | !!---------------------------------------------------------------------- |
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24 | USE oce ! ocean: variables |
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25 | USE dom_oce ! ocean: domain variables |
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26 | USE c1d ! 1D vertical configuration |
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27 | USE trd_oce ! trends: ocean variables |
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28 | USE trdtra ! trends manager: tracers |
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29 | USE zdf_oce ! ocean: vertical physics |
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30 | USE phycst ! physical constants |
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31 | USE dtatsd ! data: temperature & salinity |
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32 | USE zdfmxl ! vertical physics: mixed layer depth |
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33 | ! |
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34 | USE in_out_manager ! I/O manager |
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35 | USE iom ! XIOS |
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36 | USE lib_mpp ! MPP library |
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37 | USE prtctl ! Print control |
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38 | USE timing ! Timing |
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39 | |
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40 | IMPLICIT NONE |
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41 | PRIVATE |
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42 | |
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43 | PUBLIC tra_dmp ! called by step.F90 |
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44 | PUBLIC tra_dmp_init ! called by nemogcm.F90 |
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45 | |
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46 | ! !!* Namelist namtra_dmp : T & S newtonian damping * |
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47 | LOGICAL , PUBLIC :: ln_tradmp !: internal damping flag |
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48 | INTEGER , PUBLIC :: nn_zdmp !: = 0/1/2 flag for damping in the mixed layer |
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49 | CHARACTER(LEN=200) , PUBLIC :: cn_resto !: name of netcdf file containing restoration coefficient field |
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50 | ! |
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51 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: resto !: restoring coeff. on T and S (s-1) |
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52 | |
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53 | !! * Substitutions |
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54 | # include "do_loop_substitute.h90" |
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55 | !!---------------------------------------------------------------------- |
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56 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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57 | !! $Id: tradmp.F90 10425 2018-12-19 21:54:16Z smasson $ |
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58 | !! Software governed by the CeCILL license (see ./LICENSE) |
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59 | !!---------------------------------------------------------------------- |
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60 | CONTAINS |
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61 | |
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62 | INTEGER FUNCTION tra_dmp_alloc() |
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63 | !!---------------------------------------------------------------------- |
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64 | !! *** FUNCTION tra_dmp_alloc *** |
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65 | !!---------------------------------------------------------------------- |
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66 | ALLOCATE( resto(jpi,jpj,jpk), STAT= tra_dmp_alloc ) |
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67 | ! |
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68 | CALL mpp_sum ( 'tradmp', tra_dmp_alloc ) |
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69 | IF( tra_dmp_alloc > 0 ) CALL ctl_warn('tra_dmp_alloc: allocation of arrays failed') |
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70 | ! |
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71 | END FUNCTION tra_dmp_alloc |
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72 | |
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73 | |
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74 | SUBROUTINE tra_dmp( kt, Kbb, Kmm, pts, Krhs ) |
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75 | !!---------------------------------------------------------------------- |
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76 | !! *** ROUTINE tra_dmp *** |
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77 | !! |
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78 | !! ** Purpose : Compute the tracer trend due to a newtonian damping |
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79 | !! of the tracer field towards given data field and add it to the |
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80 | !! general tracer trends. |
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81 | !! |
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82 | !! ** Method : Newtonian damping towards t_dta and s_dta computed |
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83 | !! and add to the general tracer trends: |
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84 | !! ta = ta + resto * (t_dta - tb) |
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85 | !! sa = sa + resto * (s_dta - sb) |
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86 | !! The trend is computed either throughout the water column |
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87 | !! (nlmdmp=0) or in area of weak vertical mixing (nlmdmp=1) or |
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88 | !! below the well mixed layer (nlmdmp=2) |
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89 | !! |
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90 | !! ** Action : - tsa: tracer trends updated with the damping trend |
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91 | !!---------------------------------------------------------------------- |
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92 | INTEGER, INTENT(in ) :: kt ! ocean time-step index |
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93 | INTEGER, INTENT(in ) :: Kbb, Kmm, Krhs ! time level indices |
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94 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts,jpt), INTENT(inout) :: pts ! active tracers and RHS of tracer equation |
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95 | ! |
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96 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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97 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts) :: zts_dta |
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98 | REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: ztrdts |
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99 | !!---------------------------------------------------------------------- |
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100 | ! |
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101 | IF( ln_timing ) CALL timing_start('tra_dmp') |
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102 | ! |
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103 | IF( l_trdtra ) THEN !* Save ta and sa trends |
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104 | ALLOCATE( ztrdts(jpi,jpj,jpk,jpts) ) |
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105 | ztrdts(:,:,:,:) = pts(:,:,:,:,Krhs) |
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106 | ENDIF |
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107 | ! !== input T-S data at kt ==! |
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108 | CALL dta_tsd( kt, 'dmp', zts_dta ) ! read and interpolates T-S data at kt |
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109 | ! |
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110 | SELECT CASE ( nn_zdmp ) !== type of damping ==! |
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111 | ! |
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112 | CASE( 0 ) !* newtonian damping throughout the water column *! |
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113 | DO jn = 1, jpts |
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114 | DO_3D_00_00( 1, jpkm1 ) |
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115 | pts(ji,jj,jk,jn,Krhs) = pts(ji,jj,jk,jn,Krhs) & |
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116 | & + resto(ji,jj,jk) * ( zts_dta(ji,jj,jk,jn) - pts(ji,jj,jk,jn,Kbb) ) |
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117 | END_3D |
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118 | END DO |
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119 | ! |
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120 | CASE ( 1 ) !* no damping in the turbocline (avt > 5 cm2/s) *! |
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121 | DO_3D_00_00( 1, jpkm1 ) |
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122 | IF( avt(ji,jj,jk) <= avt_c ) THEN |
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123 | pts(ji,jj,jk,jp_tem,Krhs) = pts(ji,jj,jk,jp_tem,Krhs) & |
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124 | & + resto(ji,jj,jk) * ( zts_dta(ji,jj,jk,jp_tem) - pts(ji,jj,jk,jp_tem,Kbb) ) |
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125 | pts(ji,jj,jk,jp_sal,Krhs) = pts(ji,jj,jk,jp_sal,Krhs) & |
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126 | & + resto(ji,jj,jk) * ( zts_dta(ji,jj,jk,jp_sal) - pts(ji,jj,jk,jp_sal,Kbb) ) |
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127 | ENDIF |
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128 | END_3D |
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129 | ! |
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130 | CASE ( 2 ) !* no damping in the mixed layer *! |
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131 | DO_3D_00_00( 1, jpkm1 ) |
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132 | IF( gdept(ji,jj,jk,Kmm) >= hmlp (ji,jj) ) THEN |
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133 | pts(ji,jj,jk,jp_tem,Krhs) = pts(ji,jj,jk,jp_tem,Krhs) & |
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134 | & + resto(ji,jj,jk) * ( zts_dta(ji,jj,jk,jp_tem) - pts(ji,jj,jk,jp_tem,Kbb) ) |
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135 | pts(ji,jj,jk,jp_sal,Krhs) = pts(ji,jj,jk,jp_sal,Krhs) & |
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136 | & + resto(ji,jj,jk) * ( zts_dta(ji,jj,jk,jp_sal) - pts(ji,jj,jk,jp_sal,Kbb) ) |
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137 | ENDIF |
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138 | END_3D |
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139 | ! |
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140 | END SELECT |
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141 | ! |
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142 | IF( l_trdtra ) THEN ! trend diagnostic |
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143 | ztrdts(:,:,:,:) = pts(:,:,:,:,Krhs) - ztrdts(:,:,:,:) |
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144 | CALL trd_tra( kt, Kmm, Krhs, 'TRA', jp_tem, jptra_dmp, ztrdts(:,:,:,jp_tem) ) |
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145 | CALL trd_tra( kt, Kmm, Krhs, 'TRA', jp_sal, jptra_dmp, ztrdts(:,:,:,jp_sal) ) |
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146 | DEALLOCATE( ztrdts ) |
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147 | ENDIF |
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148 | ! ! Control print |
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149 | IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab3d_1=pts(:,:,:,jp_tem,Krhs), clinfo1=' dmp - Ta: ', mask1=tmask, & |
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150 | & tab3d_2=pts(:,:,:,jp_sal,Krhs), clinfo2= ' Sa: ', mask2=tmask, clinfo3='tra' ) |
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151 | ! |
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152 | IF( ln_timing ) CALL timing_stop('tra_dmp') |
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153 | ! |
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154 | END SUBROUTINE tra_dmp |
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155 | |
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156 | |
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157 | SUBROUTINE tra_dmp_init |
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158 | !!---------------------------------------------------------------------- |
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159 | !! *** ROUTINE tra_dmp_init *** |
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160 | !! |
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161 | !! ** Purpose : Initialization for the newtonian damping |
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162 | !! |
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163 | !! ** Method : read the namtra_dmp namelist and check the parameters |
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164 | !!---------------------------------------------------------------------- |
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165 | INTEGER :: ios, imask ! local integers |
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166 | ! |
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167 | NAMELIST/namtra_dmp/ ln_tradmp, nn_zdmp, cn_resto |
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168 | !!---------------------------------------------------------------------- |
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169 | ! |
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170 | READ ( numnam_ref, namtra_dmp, IOSTAT = ios, ERR = 901) |
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171 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_dmp in reference namelist' ) |
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172 | ! |
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173 | READ ( numnam_cfg, namtra_dmp, IOSTAT = ios, ERR = 902 ) |
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174 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtra_dmp in configuration namelist' ) |
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175 | IF(lwm) WRITE ( numond, namtra_dmp ) |
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176 | ! |
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177 | IF(lwp) THEN ! Namelist print |
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178 | WRITE(numout,*) |
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179 | WRITE(numout,*) 'tra_dmp_init : T and S newtonian relaxation' |
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180 | WRITE(numout,*) '~~~~~~~~~~~~' |
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181 | WRITE(numout,*) ' Namelist namtra_dmp : set relaxation parameters' |
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182 | WRITE(numout,*) ' Apply relaxation or not ln_tradmp = ', ln_tradmp |
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183 | WRITE(numout,*) ' mixed layer damping option nn_zdmp = ', nn_zdmp |
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184 | WRITE(numout,*) ' Damping file name cn_resto = ', cn_resto |
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185 | WRITE(numout,*) |
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186 | ENDIF |
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187 | ! |
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188 | IF( ln_tradmp ) THEN |
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189 | ! ! Allocate arrays |
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190 | IF( tra_dmp_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'tra_dmp_init: unable to allocate arrays' ) |
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191 | ! |
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192 | SELECT CASE (nn_zdmp) ! Check values of nn_zdmp |
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193 | CASE ( 0 ) ; IF(lwp) WRITE(numout,*) ' tracer damping as specified by mask' |
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194 | CASE ( 1 ) ; IF(lwp) WRITE(numout,*) ' no tracer damping in the mixing layer (kz > 5 cm2/s)' |
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195 | CASE ( 2 ) ; IF(lwp) WRITE(numout,*) ' no tracer damping in the mixed layer' |
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196 | CASE DEFAULT |
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197 | CALL ctl_stop('tra_dmp_init : wrong value of nn_zdmp') |
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198 | END SELECT |
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199 | ! |
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200 | !!TG: Initialisation of dtatsd - Would it be better to have dmpdta routine |
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201 | ! so can damp to something other than intitial conditions files? |
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202 | !!gm: In principle yes. Nevertheless, we can't anticipate demands that have never been formulated. |
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203 | IF( .NOT.ln_tsd_dmp ) THEN |
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204 | IF(lwp) WRITE(numout,*) |
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205 | IF(lwp) WRITE(numout, *) ' read T-S data not initialized, we force ln_tsd_dmp=T' |
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206 | CALL dta_tsd_init( ld_tradmp=ln_tradmp ) ! forces the initialisation of T-S data |
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207 | ENDIF |
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208 | ! ! Read in mask from file |
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209 | CALL iom_open ( cn_resto, imask) |
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210 | CALL iom_get ( imask, jpdom_autoglo, 'resto', resto ) |
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211 | CALL iom_close( imask ) |
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212 | ENDIF |
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213 | ! |
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214 | END SUBROUTINE tra_dmp_init |
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215 | |
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216 | !!====================================================================== |
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217 | END MODULE tradmp |
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