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 | !! History : 1.0 ! 2003-08 (G. Madec) original code |
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7 | !! 3.2 ! 2009-07 (S. Masson, G. Madec) IOM + merge of DO-loop |
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8 | !! 3.7 ! 2012-03 (G. Madec) make public the density criteria for trdmxl |
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9 | !! - ! 2014-02 (F. Roquet) mixed layer depth calculated using N2 instead of rhop |
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10 | !!---------------------------------------------------------------------- |
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11 | !! zdf_mxl : Compute the turbocline and mixed layer depths. |
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12 | !!---------------------------------------------------------------------- |
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13 | USE oce ! ocean dynamics and tracers variables |
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14 | USE dom_oce ! ocean space and time domain variables |
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15 | USE trc_oce, ONLY: l_offline ! ocean space and time domain variables |
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16 | USE zdf_oce ! ocean vertical physics |
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17 | USE in_out_manager ! I/O manager |
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18 | USE prtctl ! Print control |
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19 | USE phycst ! physical constants |
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20 | USE iom ! I/O library |
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21 | USE eosbn2 ! for zdf_mxl_zint |
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22 | USE lib_mpp ! MPP library |
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23 | USE wrk_nemo ! work arrays |
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24 | USE timing ! Timing |
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25 | |
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26 | IMPLICIT NONE |
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27 | PRIVATE |
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28 | |
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29 | PUBLIC zdf_mxl_tref ! called by asminc.F90 |
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30 | PUBLIC zdf_mxl ! called by step.F90 |
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31 | |
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32 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hmld_tref !: mixed layer depth at t-points - temperature criterion [m] |
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33 | INTEGER , PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: nmln !: number of level in the mixed layer (used by TOP) |
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34 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hmld !: mixing layer depth (turbocline) [m] |
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35 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hmlp !: mixed layer depth (rho=rho0+zdcrit) [m] |
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36 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hmlpt !: depth of the last T-point inside the mixed layer [m] |
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37 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: hmld_zint !: vertically-interpolated mixed layer depth [m] |
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38 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: htc_mld ! Heat content of hmld_zint |
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39 | LOGICAL, PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ll_found ! Is T_b to be found by interpolation ? |
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40 | LOGICAL, PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:):: ll_belowml ! Flag points below mixed layer when ll_found=F |
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41 | |
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42 | REAL(wp), PUBLIC :: rho_c = 0.01_wp !: density criterion for mixed layer depth |
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43 | REAL(wp) :: avt_c = 5.e-4_wp ! Kz criterion for the turbocline depth |
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44 | |
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45 | TYPE, PUBLIC :: MXL_ZINT !: Structure for MLD defs |
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46 | INTEGER :: mld_type ! mixed layer type |
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47 | REAL(wp) :: zref ! depth of initial T_ref |
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48 | REAL(wp) :: dT_crit ! Critical temp diff |
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49 | REAL(wp) :: iso_frac ! Fraction of rn_dT_crit used |
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50 | END TYPE MXL_ZINT |
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51 | |
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52 | !Used for 25h mean |
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53 | LOGICAL, PRIVATE :: mld_25h_init = .TRUE. !Logical used to initalise 25h |
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54 | !outputs. Necessary, because we need to |
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55 | !initalise the mld_25h on the zeroth |
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56 | !timestep (i.e in the nemogcm_init call) |
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57 | LOGICAL, PRIVATE :: mld_25h_write = .FALSE. !Logical confirm 25h calculating/processing |
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58 | INTEGER, SAVE :: i_cnt_25h ! Counter for 25 hour means |
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59 | REAL(wp),SAVE, ALLOCATABLE, DIMENSION(:,:,:) :: hmld_zint_25h |
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60 | |
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61 | !!---------------------------------------------------------------------- |
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62 | !! NEMO/OPA 4.0 , NEMO Consortium (2011) |
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63 | !! $Id$ |
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64 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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65 | !!---------------------------------------------------------------------- |
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66 | CONTAINS |
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67 | |
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68 | INTEGER FUNCTION zdf_mxl_alloc() |
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69 | !!---------------------------------------------------------------------- |
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70 | !! *** FUNCTION zdf_mxl_alloc *** |
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71 | !!---------------------------------------------------------------------- |
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72 | zdf_mxl_alloc = 0 ! set to zero if no array to be allocated |
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73 | IF( .NOT. ALLOCATED( nmln ) ) THEN |
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74 | ALLOCATE( nmln(jpi,jpj), hmld(jpi,jpj), hmlp(jpi,jpj), hmlpt(jpi,jpj), hmld_zint(jpi,jpj), & |
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75 | & htc_mld(jpi,jpj), & |
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76 | & ll_found(jpi,jpj), ll_belowml(jpi,jpj,jpk), STAT= zdf_mxl_alloc ) |
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77 | ! |
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78 | ALLOCATE(hmld_tref(jpi,jpj)) |
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79 | IF( lk_mpp ) CALL mpp_sum ( zdf_mxl_alloc ) |
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80 | IF( zdf_mxl_alloc /= 0 ) CALL ctl_warn('zdf_mxl_alloc: failed to allocate arrays.') |
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81 | ! |
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82 | ENDIF |
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83 | END FUNCTION zdf_mxl_alloc |
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84 | |
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85 | SUBROUTINE zdf_mxl_tref() |
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86 | !!---------------------------------------------------------------------- |
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87 | !! *** ROUTINE zdf_mxl_tref *** |
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88 | !! |
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89 | !! ** Purpose : Compute the mixed layer depth with temperature criteria. |
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90 | !! |
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91 | !! ** Method : The temperature-defined mixed layer depth is required |
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92 | !! when assimilating SST in a 2D analysis. |
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93 | !! |
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94 | !! ** Action : hmld_tref |
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95 | !!---------------------------------------------------------------------- |
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96 | ! |
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97 | INTEGER :: ji, jj, jk ! dummy loop indices |
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98 | REAL(wp) :: t_ref ! Reference temperature |
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99 | REAL(wp) :: temp_c = 0.2 ! temperature criterion for mixed layer depth |
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100 | !!---------------------------------------------------------------------- |
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101 | ! |
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102 | ! Initialise array |
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103 | IF( zdf_mxl_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_mxl_tref : unable to allocate arrays' ) |
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104 | |
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105 | !For the AMM model assimiation uses a temperature based mixed layer depth |
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106 | !This is defined here |
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107 | DO jj = 1, jpj |
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108 | DO ji = 1, jpi |
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109 | hmld_tref(ji,jj)=gdept_n(ji,jj,1 ) |
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110 | IF(ssmask(ji,jj) > 0.)THEN |
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111 | t_ref=tsn(ji,jj,1,jp_tem) |
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112 | DO jk=2,jpk |
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113 | IF(ssmask(ji,jj)==0.)THEN |
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114 | hmld_tref(ji,jj)=gdept_n(ji,jj,jk ) |
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115 | EXIT |
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116 | ELSEIF( ABS(tsn(ji,jj,jk,jp_tem)-t_ref) < temp_c)THEN |
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117 | hmld_tref(ji,jj)=gdept_n(ji,jj,jk ) |
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118 | ELSE |
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119 | EXIT |
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120 | ENDIF |
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121 | ENDDO |
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122 | ENDIF |
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123 | ENDDO |
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124 | ENDDO |
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125 | |
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126 | END SUBROUTINE zdf_mxl_tref |
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127 | |
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128 | SUBROUTINE zdf_mxl( kt ) |
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129 | !!---------------------------------------------------------------------- |
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130 | !! *** ROUTINE zdfmxl *** |
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131 | !! |
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132 | !! ** Purpose : Compute the turbocline depth and the mixed layer depth |
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133 | !! with density criteria. |
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134 | !! |
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135 | !! ** Method : The mixed layer depth is the shallowest W depth with |
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136 | !! the density of the corresponding T point (just bellow) bellow a |
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137 | !! given value defined locally as rho(10m) + rho_c |
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138 | !! The turbocline depth is the depth at which the vertical |
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139 | !! eddy diffusivity coefficient (resulting from the vertical physics |
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140 | !! alone, not the isopycnal part, see trazdf.F) fall below a given |
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141 | !! value defined locally (avt_c here taken equal to 5 cm/s2 by default) |
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142 | !! |
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143 | !! ** Action : nmln, hmld, hmlp, hmlpt |
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144 | !!---------------------------------------------------------------------- |
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145 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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146 | ! |
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147 | INTEGER :: ji, jj, jk ! dummy loop indices |
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148 | INTEGER :: iikn, iiki, ikt ! local integer |
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149 | REAL(wp) :: zN2_c ! local scalar |
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150 | INTEGER, POINTER, DIMENSION(:,:) :: imld ! 2D workspace |
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151 | !!---------------------------------------------------------------------- |
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152 | ! |
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153 | IF( nn_timing == 1 ) CALL timing_start('zdf_mxl') |
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154 | ! |
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155 | CALL wrk_alloc( jpi,jpj, imld ) |
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156 | |
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157 | IF( kt == nit000 ) THEN |
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158 | IF(lwp) WRITE(numout,*) |
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159 | IF(lwp) WRITE(numout,*) 'zdf_mxl : mixed layer depth' |
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160 | IF(lwp) WRITE(numout,*) '~~~~~~~ ' |
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161 | ! ! allocate zdfmxl arrays |
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162 | IF( zdf_mxl_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_mxl : unable to allocate arrays' ) |
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163 | ENDIF |
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164 | |
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165 | ! w-level of the mixing and mixed layers |
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166 | nmln(:,:) = nlb10 ! Initialization to the number of w ocean point |
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167 | hmlp(:,:) = 0._wp ! here hmlp used as a dummy variable, integrating vertically N^2 |
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168 | zN2_c = grav * rho_c * r1_rau0 ! convert density criteria into N^2 criteria |
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169 | DO jk = nlb10, jpkm1 |
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170 | DO jj = 1, jpj ! Mixed layer level: w-level |
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171 | DO ji = 1, jpi |
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172 | ikt = mbkt(ji,jj) |
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173 | hmlp(ji,jj) = hmlp(ji,jj) + MAX( rn2b(ji,jj,jk) , 0._wp ) * e3w_n(ji,jj,jk) |
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174 | IF( hmlp(ji,jj) < zN2_c ) nmln(ji,jj) = MIN( jk , ikt ) + 1 ! Mixed layer level |
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175 | END DO |
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176 | END DO |
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177 | END DO |
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178 | ! |
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179 | ! w-level of the turbocline and mixing layer (iom_use) |
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180 | imld(:,:) = mbkt(:,:) + 1 ! Initialization to the number of w ocean point |
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181 | DO jk = jpkm1, nlb10, -1 ! from the bottom to nlb10 |
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182 | DO jj = 1, jpj |
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183 | DO ji = 1, jpi |
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184 | IF( avt (ji,jj,jk) < avt_c * wmask(ji,jj,jk) ) imld(ji,jj) = jk ! Turbocline |
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185 | END DO |
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186 | END DO |
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187 | END DO |
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188 | ! depth of the mixing and mixed layers |
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189 | DO jj = 1, jpj |
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190 | DO ji = 1, jpi |
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191 | iiki = imld(ji,jj) |
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192 | iikn = nmln(ji,jj) |
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193 | hmld (ji,jj) = gdepw_n(ji,jj,iiki ) * ssmask(ji,jj) ! Turbocline depth |
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194 | hmlp (ji,jj) = gdepw_n(ji,jj,iikn ) * ssmask(ji,jj) ! Mixed layer depth |
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195 | hmlpt(ji,jj) = gdept_n(ji,jj,iikn-1) * ssmask(ji,jj) ! depth of the last T-point inside the mixed layer |
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196 | END DO |
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197 | END DO |
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198 | ! |
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199 | IF( .NOT.l_offline ) THEN |
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200 | IF( iom_use("mldr10_1") ) THEN |
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201 | IF( ln_isfcav ) THEN ; CALL iom_put( "mldr10_1", hmlp - risfdep) ! mixed layer thickness |
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202 | ELSE ; CALL iom_put( "mldr10_1", hmlp ) ! mixed layer depth |
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203 | END IF |
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204 | END IF |
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205 | IF( iom_use("mldkz5") ) THEN |
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206 | IF( ln_isfcav ) THEN ; CALL iom_put( "mldkz5" , hmld - risfdep ) ! turbocline thickness |
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207 | ELSE ; CALL iom_put( "mldkz5" , hmld ) ! turbocline depth |
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208 | END IF |
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209 | ENDIF |
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210 | ENDIF |
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211 | |
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212 | ! Vertically-interpolated mixed-layer depth diagnostic |
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213 | CALL zdf_mxl_zint( kt ) |
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214 | |
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215 | IF(ln_ctl) CALL prt_ctl( tab2d_1=REAL(nmln,wp), clinfo1=' nmln : ', tab2d_2=hmlp, clinfo2=' hmlp : ', ovlap=1 ) |
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216 | ! |
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217 | CALL wrk_dealloc( jpi,jpj, imld ) |
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218 | ! |
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219 | IF( nn_timing == 1 ) CALL timing_stop('zdf_mxl') |
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220 | ! |
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221 | END SUBROUTINE zdf_mxl |
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222 | |
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223 | SUBROUTINE zdf_mxl_zint_mld( sf ) |
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224 | !!---------------------------------------------------------------------------------- |
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225 | !! *** ROUTINE zdf_mxl_zint_mld *** |
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226 | ! |
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227 | ! Calculate vertically-interpolated mixed layer depth diagnostic. |
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228 | ! |
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229 | ! This routine can calculate the mixed layer depth diagnostic suggested by |
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230 | ! Kara et al, 2000, JGR, 105, 16803, but is more general and can calculate |
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231 | ! vertically-interpolated mixed-layer depth diagnostics with other parameter |
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232 | ! settings set in the namzdf_mldzint namelist. |
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233 | ! |
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234 | ! If mld_type=1 the mixed layer depth is calculated as the depth at which the |
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235 | ! density has increased by an amount equivalent to a temperature difference of |
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236 | ! 0.8C at the surface. |
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237 | ! |
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238 | ! For other values of mld_type the mixed layer is calculated as the depth at |
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239 | ! which the temperature differs by 0.8C from the surface temperature. |
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240 | ! |
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241 | ! David Acreman, Daley Calvert |
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242 | ! |
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243 | !!----------------------------------------------------------------------------------- |
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244 | |
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245 | TYPE(MXL_ZINT), INTENT(in) :: sf |
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246 | |
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247 | ! Diagnostic criteria |
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248 | INTEGER :: nn_mld_type ! mixed layer type |
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249 | REAL(wp) :: rn_zref ! depth of initial T_ref |
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250 | REAL(wp) :: rn_dT_crit ! Critical temp diff |
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251 | REAL(wp) :: rn_iso_frac ! Fraction of rn_dT_crit used |
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252 | |
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253 | ! Local variables |
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254 | REAL(wp), PARAMETER :: zepsilon = 1.e-30 ! local small value |
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255 | INTEGER, POINTER, DIMENSION(:,:) :: ik_ref ! index of reference level |
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256 | INTEGER, POINTER, DIMENSION(:,:) :: ik_iso ! index of last uniform temp level |
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257 | REAL, POINTER, DIMENSION(:,:,:) :: zT ! Temperature or density |
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258 | REAL, POINTER, DIMENSION(:,:) :: ppzdep ! depth for use in calculating d(rho) |
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259 | REAL, POINTER, DIMENSION(:,:) :: zT_ref ! reference temperature |
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260 | REAL :: zT_b ! base temperature |
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261 | REAL, POINTER, DIMENSION(:,:,:) :: zdTdz ! gradient of zT |
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262 | REAL, POINTER, DIMENSION(:,:,:) :: zmoddT ! Absolute temperature difference |
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263 | REAL :: zdz ! depth difference |
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264 | REAL :: zdT ! temperature difference |
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265 | REAL, POINTER, DIMENSION(:,:) :: zdelta_T ! difference critereon |
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266 | REAL, POINTER, DIMENSION(:,:) :: zRHO1, zRHO2 ! Densities |
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267 | INTEGER :: ji, jj, jk ! loop counter |
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268 | |
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269 | !!------------------------------------------------------------------------------------- |
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270 | ! |
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271 | CALL wrk_alloc( jpi, jpj, ik_ref, ik_iso) |
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272 | CALL wrk_alloc( jpi, jpj, ppzdep, zT_ref, zdelta_T, zRHO1, zRHO2 ) |
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273 | CALL wrk_alloc( jpi, jpj, jpk, zT, zdTdz, zmoddT ) |
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274 | |
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275 | ! Unpack structure |
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276 | nn_mld_type = sf%mld_type |
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277 | rn_zref = sf%zref |
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278 | rn_dT_crit = sf%dT_crit |
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279 | rn_iso_frac = sf%iso_frac |
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280 | |
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281 | ! Set the mixed layer depth criterion at each grid point |
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282 | IF( nn_mld_type == 0 ) THEN |
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283 | zdelta_T(:,:) = rn_dT_crit |
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284 | zT(:,:,:) = rhop(:,:,:) |
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285 | ELSE IF( nn_mld_type == 1 ) THEN |
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286 | ppzdep(:,:)=0.0 |
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287 | call eos ( tsn(:,:,1,:), ppzdep(:,:), zRHO1(:,:) ) |
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288 | ! Use zT temporarily as a copy of tsn with rn_dT_crit added to SST |
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289 | ! [assumes number of tracers less than number of vertical levels] |
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290 | zT(:,:,1:jpts)=tsn(:,:,1,1:jpts) |
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291 | zT(:,:,jp_tem)=zT(:,:,1)+rn_dT_crit |
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292 | CALL eos( zT(:,:,1:jpts), ppzdep(:,:), zRHO2(:,:) ) |
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293 | zdelta_T(:,:) = abs( zRHO1(:,:) - zRHO2(:,:) ) * rau0 |
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294 | ! RHO from eos (2d version) doesn't calculate north or east halo: |
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295 | CALL lbc_lnk( zdelta_T, 'T', 1. ) |
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296 | zT(:,:,:) = rhop(:,:,:) |
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297 | ELSE |
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298 | zdelta_T(:,:) = rn_dT_crit |
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299 | zT(:,:,:) = tsn(:,:,:,jp_tem) |
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300 | END IF |
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301 | |
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302 | ! Calculate the gradient of zT and absolute difference for use later |
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303 | DO jk = 1 ,jpk-2 |
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304 | zdTdz(:,:,jk) = ( zT(:,:,jk+1) - zT(:,:,jk) ) / e3w_n(:,:,jk+1) |
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305 | zmoddT(:,:,jk) = abs( zT(:,:,jk+1) - zT(:,:,jk) ) |
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306 | END DO |
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307 | |
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308 | ! Find density/temperature at the reference level (Kara et al use 10m). |
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309 | ! ik_ref is the index of the box centre immediately above or at the reference level |
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310 | ! Find rn_zref in the array of model level depths and find the ref |
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311 | ! density/temperature by linear interpolation. |
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312 | DO jk = jpkm1, 2, -1 |
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313 | WHERE ( gdept_n(:,:,jk) > rn_zref ) |
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314 | ik_ref(:,:) = jk - 1 |
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315 | zT_ref(:,:) = zT(:,:,jk-1) + zdTdz(:,:,jk-1) * ( rn_zref - gdept_n(:,:,jk-1) ) |
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316 | END WHERE |
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317 | END DO |
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318 | |
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319 | ! If the first grid box centre is below the reference level then use the |
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320 | ! top model level to get zT_ref |
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321 | WHERE ( gdept_n(:,:,1) > rn_zref ) |
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322 | zT_ref = zT(:,:,1) |
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323 | ik_ref = 1 |
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324 | END WHERE |
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325 | |
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326 | ! Initialize / reset |
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327 | ll_found(:,:) = .false. |
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328 | |
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329 | IF ( rn_iso_frac - zepsilon > 0. ) THEN |
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330 | ! Search for a uniform density/temperature region where adjacent levels |
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331 | ! differ by less than rn_iso_frac * deltaT. |
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332 | ! ik_iso is the index of the last level in the uniform layer |
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333 | ! ll_found indicates whether the mixed layer depth can be found by interpolation |
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334 | ik_iso(:,:) = ik_ref(:,:) |
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335 | DO jj = 1, nlcj |
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336 | DO ji = 1, nlci |
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337 | !CDIR NOVECTOR |
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338 | DO jk = ik_ref(ji,jj), mbkt(ji,jj)-1 |
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339 | IF ( zmoddT(ji,jj,jk) > ( rn_iso_frac * zdelta_T(ji,jj) ) ) THEN |
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340 | ik_iso(ji,jj) = jk |
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341 | ll_found(ji,jj) = ( zmoddT(ji,jj,jk) > zdelta_T(ji,jj) ) |
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342 | EXIT |
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343 | END IF |
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344 | END DO |
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345 | END DO |
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346 | END DO |
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347 | |
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348 | ! Use linear interpolation to find depth of mixed layer base where possible |
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349 | hmld_zint(:,:) = rn_zref |
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350 | DO jj = 1, jpj |
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351 | DO ji = 1, jpi |
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352 | IF (ll_found(ji,jj) .and. tmask(ji,jj,1) == 1.0) THEN |
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353 | zdz = abs( zdelta_T(ji,jj) / zdTdz(ji,jj,ik_iso(ji,jj)) ) |
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354 | hmld_zint(ji,jj) = gdept_n(ji,jj,ik_iso(ji,jj)) + zdz |
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355 | END IF |
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356 | END DO |
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357 | END DO |
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358 | END IF |
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359 | |
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360 | ! If ll_found = .false. then calculate MLD using difference of zdelta_T |
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361 | ! from the reference density/temperature |
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362 | |
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363 | ! Prevent this section from working on land points |
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364 | WHERE ( tmask(:,:,1) /= 1.0 ) |
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365 | ll_found = .true. |
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366 | END WHERE |
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367 | |
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368 | DO jk=1, jpk |
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369 | ll_belowml(:,:,jk) = abs( zT(:,:,jk) - zT_ref(:,:) ) >= zdelta_T(:,:) |
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370 | END DO |
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371 | |
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372 | ! Set default value where interpolation cannot be used (ll_found=false) |
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373 | DO jj = 1, jpj |
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374 | DO ji = 1, jpi |
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375 | IF ( .not. ll_found(ji,jj) ) hmld_zint(ji,jj) = gdept_n(ji,jj,mbkt(ji,jj)) |
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376 | END DO |
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377 | END DO |
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378 | |
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379 | DO jj = 1, jpj |
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380 | DO ji = 1, jpi |
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381 | !CDIR NOVECTOR |
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382 | DO jk = ik_ref(ji,jj)+1, mbkt(ji,jj) |
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383 | IF ( ll_found(ji,jj) ) EXIT |
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384 | IF ( ll_belowml(ji,jj,jk) ) THEN |
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385 | zT_b = zT_ref(ji,jj) + zdelta_T(ji,jj) * SIGN(1.0, zdTdz(ji,jj,jk-1) ) |
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386 | zdT = zT_b - zT(ji,jj,jk-1) |
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387 | zdz = zdT / zdTdz(ji,jj,jk-1) |
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388 | hmld_zint(ji,jj) = gdept_n(ji,jj,jk-1) + zdz |
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389 | EXIT |
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390 | END IF |
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391 | END DO |
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392 | END DO |
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393 | END DO |
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394 | |
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395 | hmld_zint(:,:) = hmld_zint(:,:)*tmask(:,:,1) |
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396 | ! |
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397 | CALL wrk_dealloc( jpi, jpj, ik_ref, ik_iso) |
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398 | CALL wrk_dealloc( jpi, jpj, ppzdep, zT_ref, zdelta_T, zRHO1, zRHO2 ) |
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399 | CALL wrk_dealloc( jpi,jpj, jpk, zT, zdTdz, zmoddT ) |
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400 | ! |
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401 | END SUBROUTINE zdf_mxl_zint_mld |
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402 | |
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403 | SUBROUTINE zdf_mxl_zint_htc( kt ) |
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404 | !!---------------------------------------------------------------------- |
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405 | !! *** ROUTINE zdf_mxl_zint_htc *** |
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406 | !! |
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407 | !! ** Purpose : |
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408 | !! |
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409 | !! ** Method : |
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410 | !!---------------------------------------------------------------------- |
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411 | |
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412 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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413 | |
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414 | INTEGER :: ji, jj, jk |
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415 | INTEGER :: ikmax |
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416 | REAL(wp) :: zc, zcoef |
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417 | ! |
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418 | INTEGER, ALLOCATABLE, DIMENSION(:,:) :: ilevel |
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419 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: zthick_0, zthick |
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420 | |
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421 | !!---------------------------------------------------------------------- |
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422 | |
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423 | IF( .NOT. ALLOCATED(ilevel) ) THEN |
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424 | ALLOCATE( ilevel(jpi,jpj), zthick_0(jpi,jpj), & |
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425 | & zthick(jpi,jpj), STAT=ji ) |
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426 | IF( lk_mpp ) CALL mpp_sum(ji) |
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427 | IF( ji /= 0 ) CALL ctl_stop( 'STOP', 'zdf_mxl_zint_htc : unable to allocate arrays' ) |
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428 | ENDIF |
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429 | |
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430 | ! Find last whole model T level above the MLD |
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431 | ilevel(:,:) = 0 |
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432 | zthick_0(:,:) = 0._wp |
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433 | |
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434 | DO jk = 1, jpkm1 |
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435 | DO jj = 1, jpj |
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436 | DO ji = 1, jpi |
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437 | zthick_0(ji,jj) = zthick_0(ji,jj) + e3t_n(ji,jj,jk) |
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438 | IF( zthick_0(ji,jj) < hmld_zint(ji,jj) ) ilevel(ji,jj) = jk |
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439 | END DO |
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440 | END DO |
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441 | WRITE(numout,*) 'zthick_0(jk =',jk,') =',zthick_0(2,2) |
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442 | WRITE(numout,*) 'gdepw_n(jk+1 =',jk+1,') =',gdepw_n(2,2,jk+1) |
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443 | END DO |
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444 | |
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445 | ! Surface boundary condition |
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446 | IF(.NOT.ln_linssh) THEN ; zthick(:,:) = 0._wp ; htc_mld(:,:) = 0._wp |
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447 | ELSE ; zthick(:,:) = sshn(:,:) ; htc_mld(:,:) = tsn(:,:,1,jp_tem) * sshn(:,:) * tmask(:,:,1) |
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448 | ENDIF |
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449 | |
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450 | ! Deepest whole T level above the MLD |
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451 | ikmax = MIN( MAXVAL( ilevel(:,:) ), jpkm1 ) |
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452 | |
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453 | ! Integration down to last whole model T level |
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454 | DO jk = 1, ikmax |
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455 | DO jj = 1, jpj |
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456 | DO ji = 1, jpi |
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457 | zc = e3t_n(ji,jj,jk) * REAL( MIN( MAX( 0, ilevel(ji,jj) - jk + 1 ) , 1 ) ) ! 0 below ilevel |
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458 | zthick(ji,jj) = zthick(ji,jj) + zc |
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459 | htc_mld(ji,jj) = htc_mld(ji,jj) + zc * tsn(ji,jj,jk,jp_tem) * tmask(ji,jj,jk) |
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460 | END DO |
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461 | END DO |
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462 | END DO |
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463 | |
---|
464 | ! Subsequent partial T level |
---|
465 | zthick(:,:) = hmld_zint(:,:) - zthick(:,:) ! remaining thickness to reach MLD |
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466 | |
---|
467 | DO jj = 1, jpj |
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468 | DO ji = 1, jpi |
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469 | htc_mld(ji,jj) = htc_mld(ji,jj) + tsn(ji,jj,ilevel(ji,jj)+1,jp_tem) & |
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470 | & * MIN( e3t_n(ji,jj,ilevel(ji,jj)+1), zthick(ji,jj) ) * tmask(ji,jj,ilevel(ji,jj)+1) |
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471 | END DO |
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472 | END DO |
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473 | |
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474 | WRITE(numout,*) 'htc_mld(after) =',htc_mld(2,2) |
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475 | |
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476 | ! Convert to heat content |
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477 | zcoef = rau0 * rcp |
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478 | htc_mld(:,:) = zcoef * htc_mld(:,:) |
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479 | |
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480 | END SUBROUTINE zdf_mxl_zint_htc |
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481 | |
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482 | SUBROUTINE zdf_mxl_zint( kt ) |
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483 | !!---------------------------------------------------------------------- |
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484 | !! *** ROUTINE zdf_mxl_zint *** |
---|
485 | !! |
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486 | !! ** Purpose : |
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487 | !! |
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488 | !! ** Method : |
---|
489 | !!---------------------------------------------------------------------- |
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490 | |
---|
491 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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492 | |
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493 | INTEGER :: ios |
---|
494 | INTEGER :: jn |
---|
495 | |
---|
496 | INTEGER :: nn_mld_diag = 0 ! number of diagnostics |
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497 | |
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498 | INTEGER :: i_steps ! no of timesteps per hour |
---|
499 | INTEGER :: ierror ! logical error message |
---|
500 | |
---|
501 | REAL(wp) :: zdt ! timestep variable |
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502 | |
---|
503 | CHARACTER(len=1) :: cmld |
---|
504 | |
---|
505 | TYPE(MXL_ZINT) :: sn_mld1, sn_mld2, sn_mld3, sn_mld4, sn_mld5 |
---|
506 | TYPE(MXL_ZINT), SAVE, DIMENSION(5) :: mld_diags |
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507 | |
---|
508 | NAMELIST/namzdf_mldzint/ nn_mld_diag, sn_mld1, sn_mld2, sn_mld3, sn_mld4, sn_mld5 |
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509 | |
---|
510 | !!---------------------------------------------------------------------- |
---|
511 | |
---|
512 | IF( kt == nit000 ) THEN |
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513 | REWIND( numnam_ref ) ! Namelist namzdf_mldzint in reference namelist |
---|
514 | READ ( numnam_ref, namzdf_mldzint, IOSTAT = ios, ERR = 901) |
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515 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_mldzint in reference namelist', lwp ) |
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516 | |
---|
517 | REWIND( numnam_cfg ) ! Namelist namzdf_mldzint in configuration namelist |
---|
518 | READ ( numnam_cfg, namzdf_mldzint, IOSTAT = ios, ERR = 902 ) |
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519 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_mldzint in configuration namelist', lwp ) |
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520 | IF(lwm) WRITE ( numond, namzdf_mldzint ) |
---|
521 | |
---|
522 | IF( nn_mld_diag > 5 ) CALL ctl_stop( 'STOP', 'zdf_mxl_ini: Specify no more than 5 MLD definitions' ) |
---|
523 | |
---|
524 | mld_diags(1) = sn_mld1 |
---|
525 | mld_diags(2) = sn_mld2 |
---|
526 | mld_diags(3) = sn_mld3 |
---|
527 | mld_diags(4) = sn_mld4 |
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528 | mld_diags(5) = sn_mld5 |
---|
529 | |
---|
530 | IF( nn_mld_diag > 0 ) THEN |
---|
531 | WRITE(numout,*) '=============== Vertically-interpolated mixed layer ================' |
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532 | WRITE(numout,*) '(Diagnostic number, nn_mld_type, rn_zref, rn_dT_crit, rn_iso_frac)' |
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533 | DO jn = 1, nn_mld_diag |
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534 | WRITE(numout,*) 'MLD criterion',jn,':' |
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535 | WRITE(numout,*) ' nn_mld_type =', mld_diags(jn)%mld_type |
---|
536 | WRITE(numout,*) ' rn_zref =' , mld_diags(jn)%zref |
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537 | WRITE(numout,*) ' rn_dT_crit =' , mld_diags(jn)%dT_crit |
---|
538 | WRITE(numout,*) ' rn_iso_frac =', mld_diags(jn)%iso_frac |
---|
539 | END DO |
---|
540 | WRITE(numout,*) '====================================================================' |
---|
541 | ENDIF |
---|
542 | ENDIF |
---|
543 | |
---|
544 | IF( nn_mld_diag > 0 ) THEN |
---|
545 | DO jn = 1, nn_mld_diag |
---|
546 | WRITE(cmld,'(I1)') jn |
---|
547 | IF( iom_use( "mldzint_"//cmld ) .OR. iom_use( "mldhtc_"//cmld ) ) THEN |
---|
548 | CALL zdf_mxl_zint_mld( mld_diags(jn) ) |
---|
549 | |
---|
550 | IF( iom_use( "mldzint_"//cmld ) ) THEN |
---|
551 | CALL iom_put( "mldzint_"//cmld, hmld_zint(:,:) ) |
---|
552 | ENDIF |
---|
553 | |
---|
554 | IF( iom_use( "mldhtc_"//cmld ) ) THEN |
---|
555 | CALL zdf_mxl_zint_htc( kt ) |
---|
556 | CALL iom_put( "mldhtc_"//cmld , htc_mld(:,:) ) |
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557 | ENDIF |
---|
558 | |
---|
559 | IF( iom_use( "mldzint25h_"//cmld ) ) THEN |
---|
560 | IF( .NOT. mld_25h_write ) mld_25h_write = .TRUE. |
---|
561 | zdt = rdt |
---|
562 | IF( MOD( 3600,INT(zdt) ) == 0 ) THEN |
---|
563 | i_steps = 3600/INT(zdt) |
---|
564 | ELSE |
---|
565 | CALL ctl_stop('STOP', 'zdf_mxl_zint 25h: timestep must give MOD(3600,rdt) = 0 otherwise no hourly values are possible') |
---|
566 | ENDIF |
---|
567 | IF( ( mld_25h_init ) .OR. ( kt == nit000 ) ) THEN |
---|
568 | i_cnt_25h = 1 |
---|
569 | IF( .NOT. ALLOCATED(hmld_zint_25h) ) THEN |
---|
570 | ALLOCATE( hmld_zint_25h(jpi,jpj,nn_mld_diag), STAT=ierror ) |
---|
571 | IF( ierror > 0 ) CALL ctl_stop( 'zdf_mxl_zint 25h: unable to allocate hmld_zint_25h' ) |
---|
572 | ENDIF |
---|
573 | hmld_zint_25h(:,:,jn) = hmld_zint(:,:) |
---|
574 | ENDIF |
---|
575 | IF( MOD( kt, i_steps ) == 0 .AND. kt .NE. nn_it000 ) THEN |
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576 | hmld_zint_25h(:,:,jn) = hmld_zint_25h(:,:,jn) + hmld_zint(:,:) |
---|
577 | ENDIF |
---|
578 | IF( i_cnt_25h .EQ. 25 .AND. MOD( kt, i_steps*24) == 0 .AND. kt .NE. nn_it000 ) THEN |
---|
579 | CALL iom_put( "mldzint25h_"//cmld , hmld_zint_25h(:,:,jn) / 25._wp ) |
---|
580 | ENDIF |
---|
581 | ENDIF |
---|
582 | |
---|
583 | ENDIF |
---|
584 | END DO |
---|
585 | |
---|
586 | IF( mld_25h_write ) THEN |
---|
587 | IF( ( MOD( kt, i_steps ) == 0 ) .OR. mld_25h_init ) THEN |
---|
588 | IF (lwp) THEN |
---|
589 | WRITE(numout,*) 'zdf_mxl_zint (25h) : Summed the following number of hourly values so far',i_cnt_25h |
---|
590 | ENDIF |
---|
591 | i_cnt_25h = i_cnt_25h + 1 |
---|
592 | IF( mld_25h_init ) mld_25h_init = .FALSE. |
---|
593 | ENDIF |
---|
594 | IF( i_cnt_25h .EQ. 25 .AND. MOD( kt, i_steps*24) == 0 .AND. kt .NE. nn_it000 ) THEN |
---|
595 | i_cnt_25h = 1 |
---|
596 | DO jn = 1, nn_mld_diag |
---|
597 | hmld_zint_25h(:,:,jn) = hmld_zint(:,:) |
---|
598 | ENDDO |
---|
599 | ENDIF |
---|
600 | ENDIF |
---|
601 | |
---|
602 | ENDIF |
---|
603 | |
---|
604 | END SUBROUTINE zdf_mxl_zint |
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605 | |
---|
606 | !!====================================================================== |
---|
607 | END MODULE zdfmxl |
---|