1 | MODULE sbcwave |
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2 | !!====================================================================== |
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3 | !! *** MODULE sbcwave *** |
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4 | !! Wave module |
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5 | !!====================================================================== |
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6 | !! History : 3.3 ! 2011-09 (Adani M) Original code: Drag Coefficient |
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7 | !! : 3.4 ! 2012-10 (Adani M) Stokes Drift |
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8 | !! 3.6 ! 2014-09 (Clementi E, Oddo P)New Stokes Drift Computation |
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9 | !!---------------------------------------------------------------------- |
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10 | |
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11 | !!---------------------------------------------------------------------- |
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12 | !! sbc_wave : wave data from wave model in netcdf files |
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13 | !!---------------------------------------------------------------------- |
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14 | USE oce ! |
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15 | USE sbc_oce ! Surface boundary condition: ocean fields |
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16 | USE bdy_oce ! |
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17 | USE domvvl ! |
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18 | ! |
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19 | USE iom ! I/O manager library |
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20 | USE in_out_manager ! I/O manager |
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21 | USE lib_mpp ! distribued memory computing library |
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22 | USE fldread ! read input fields |
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23 | USE wrk_nemo ! |
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24 | USE phycst ! physical constants |
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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 sbc_stokes, sbc_qiao ! routines called in sbccpl |
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30 | PUBLIC sbc_wave ! routine called in sbcmod |
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31 | |
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32 | ! Variables checking if the wave parameters are coupled (if not, they are read from file) |
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33 | LOGICAL, PUBLIC :: cpl_hsig=.FALSE. |
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34 | LOGICAL, PUBLIC :: cpl_phioc=.FALSE. |
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35 | LOGICAL, PUBLIC :: cpl_sdrftx=.FALSE. |
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36 | LOGICAL, PUBLIC :: cpl_sdrfty=.FALSE. |
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37 | LOGICAL, PUBLIC :: cpl_wper=.FALSE. |
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38 | LOGICAL, PUBLIC :: cpl_wnum=.FALSE. |
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39 | LOGICAL, PUBLIC :: cpl_wstrf=.FALSE. |
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40 | LOGICAL, PUBLIC :: cpl_wdrag=.FALSE. |
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41 | |
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42 | INTEGER :: jpfld ! number of files to read for stokes drift |
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43 | INTEGER :: jp_usd ! index of stokes drift (i-component) (m/s) at T-point |
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44 | INTEGER :: jp_vsd ! index of stokes drift (j-component) (m/s) at T-point |
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45 | INTEGER :: jp_swh ! index of significant wave hight (m) at T-point |
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46 | INTEGER :: jp_wmp ! index of mean wave period (s) at T-point |
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47 | |
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48 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_cd ! structure of input fields (file informations, fields read) Drag Coefficient |
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49 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_sd ! structure of input fields (file informations, fields read) Stokes Drift |
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50 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_wn ! structure of input fields (file informations, fields read) wave number for Qiao |
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51 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_tauoc ! structure of input fields (file informations, fields read) normalized wave stress into the ocean |
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52 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: cdn_wave |
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53 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: swh,wmp, wnum |
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54 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: tauoc_wave |
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55 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: tsd2d |
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56 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: usd2d, vsd2d |
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57 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: usd3d, vsd3d, wsd3d |
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58 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: zusd2dt, zvsd2dt |
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59 | |
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60 | !! * Substitutions |
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61 | # include "domzgr_substitute.h90" |
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62 | # include "vectopt_loop_substitute.h90" |
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63 | !!---------------------------------------------------------------------- |
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64 | !! NEMO/OPA 3.7 , NEMO Consortium (2014) |
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65 | !! $Id$ |
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66 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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67 | !!---------------------------------------------------------------------- |
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68 | CONTAINS |
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69 | |
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70 | SUBROUTINE sbc_stokes( ) |
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71 | !!--------------------------------------------------------------------- |
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72 | !! *** ROUTINE sbc_stokes *** |
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73 | !! |
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74 | !! ** Purpose : compute the 3d Stokes Drift according to Breivik et al., |
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75 | !! 2014 (DOI: 10.1175/JPO-D-14-0020.1) |
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76 | !! |
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77 | !! ** Method : - Calculate Stokes transport speed |
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78 | !! - Calculate horizontal divergence |
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79 | !! - Integrate the horizontal divergenze from the bottom |
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80 | !! ** action |
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81 | !!--------------------------------------------------------------------- |
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82 | INTEGER :: jj,ji,jk |
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83 | REAL(wp) :: ztransp, zsp0, zk, zus, zvs |
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84 | REAL(wp), DIMENSION(jpi,jpj) :: zfac |
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85 | REAL(wp), DIMENSION(:,:,:), POINTER :: ze3hdiv ! 3D workspace |
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86 | |
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87 | |
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88 | CALL wrk_alloc( jpi,jpj,jpk, ze3hdiv ) |
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89 | DO jk = 1, jpk |
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90 | DO jj = 1, jpj |
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91 | DO ji = 1, jpi |
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92 | ! On T grid |
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93 | ! Stokes transport speed estimated from Hs and Tmean |
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94 | ztransp = 2.0_wp*rpi*swh(ji,jj)**2.0_wp/(16.0_wp*MAX(wmp(ji,jj),0.0000001_wp)) |
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95 | ! Stokes surface speed |
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96 | zsp0 = SQRT( sf_sd(jp_usd)%fnow(ji,jj,1)**2 + sf_sd(jp_vsd)%fnow(ji,jj,1)**2) |
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97 | ! Wavenumber scale |
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98 | zk = ABS(zsp0)/MAX(ABS(5.97_wp*ztransp),0.0000001_wp) |
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99 | ! Depth attenuation |
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100 | zfac(ji,jj) = EXP(-2.0_wp*zk*fsdept(ji,jj,jk))/(1.0_wp+8.0_wp*zk*fsdept(ji,jj,jk)) |
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101 | END DO |
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102 | END DO |
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103 | |
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104 | DO jj = 1, jpjm1 |
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105 | DO ji = 1, jpim1 |
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106 | ! Into the U and V Grid |
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107 | zus = 0.5 * ( 2. - umask(ji,jj,1) ) * ( zfac(ji,jj) * tmask(ji,jj,1) & |
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108 | & + zfac(ji+1,jj) * tmask(ji+1,jj,1) ) |
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109 | zvs = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( zfac(ji,jj) * tmask(ji,jj,1) & |
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110 | & + zfac(ji,jj+1) * tmask(ji,jj+1,1) ) |
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111 | usd2d(ji,jj) = 0.5 * ( 2. - umask(ji,jj,1) ) * ( zusd2dt(ji,jj) * tmask(ji,jj,1) & |
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112 | & + zusd2dt(ji+1,jj) * tmask(ji+1,jj,1) ) |
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113 | vsd2d(ji,jj) = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( zvsd2dt(ji,jj) * tmask(ji,jj,1) & |
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114 | & + zvsd2dt(ji,jj+1) * tmask(ji,jj+1,1) ) |
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115 | usd3d(ji,jj,jk) = usd2d(ji,jj) * zus |
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116 | vsd3d(ji,jj,jk) = vsd2d(ji,jj) * zvs |
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117 | END DO |
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118 | END DO |
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119 | END DO |
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120 | ! |
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121 | CALL lbc_lnk( usd3d(:,:,:), 'U', -1. ) |
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122 | CALL lbc_lnk( vsd3d(:,:,:), 'V', -1. ) |
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123 | ! |
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124 | DO jk = 1, jpkm1 ! e3t * Horizontal divergence |
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125 | DO jj = 2, jpjm1 |
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126 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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127 | ze3hdiv(ji,jj,jk) = ( e2u(ji ,jj) * fse3u_n(ji ,jj,jk) * usd3d(ji ,jj,jk) & |
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128 | & - e2u(ji-1,jj) * fse3u_n(ji-1,jj,jk) * usd3d(ji-1,jj,jk) & |
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129 | & + e1v(ji,jj ) * fse3v_n(ji,jj ,jk) * vsd3d(ji,jj ,jk) & |
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130 | & - e1v(ji,jj-1) * fse3v_n(ji,jj-1,jk) * vsd3d(ji,jj-1,jk) ) * r1_e1e2t(ji,jj) |
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131 | END DO |
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132 | END DO |
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133 | IF( .NOT. AGRIF_Root() ) THEN |
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134 | IF( nbondi == 1 .OR. nbondi == 2 ) ze3hdiv(nlci-1, : ,jk) = 0._wp ! east |
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135 | IF( nbondi == -1 .OR. nbondi == 2 ) ze3hdiv( 2 , : ,jk) = 0._wp ! west |
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136 | IF( nbondj == 1 .OR. nbondj == 2 ) ze3hdiv( : ,nlcj-1,jk) = 0._wp ! north |
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137 | IF( nbondj == -1 .OR. nbondj == 2 ) ze3hdiv( : , 2 ,jk) = 0._wp ! south |
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138 | ENDIF |
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139 | END DO |
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140 | CALL lbc_lnk( ze3hdiv, 'T', 1. ) |
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141 | ! |
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142 | DO jk = jpkm1, 1, -1 !* integrate from the bottom the e3t * hor. divergence |
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143 | wsd3d(:,:,jk) = wsd3d(:,:,jk+1) - ze3hdiv(:,:,jk) |
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144 | END DO |
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145 | #if defined key_bdy |
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146 | IF( lk_bdy ) THEN |
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147 | DO jk = 1, jpkm1 |
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148 | wsd3d(:,:,jk) = wsd3d(:,:,jk) * bdytmask(:,:) |
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149 | END DO |
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150 | ENDIF |
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151 | #endif |
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152 | CALL wrk_dealloc( jpi,jpj,jpk, ze3hdiv ) |
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153 | ! |
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154 | END SUBROUTINE sbc_stokes |
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155 | |
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156 | SUBROUTINE sbc_qiao( ) |
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157 | !!--------------------------------------------------------------------- |
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158 | !! *** ROUTINE sbc_qiao *** |
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159 | !! |
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160 | !! ** Purpose : Qiao formulation for wave enhanced turbulence |
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161 | !! 2010 (DOI: 10.1007/s10236-010-0326) |
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162 | !! |
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163 | !! ** Method : - |
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164 | !! ** action |
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165 | !!--------------------------------------------------------------------- |
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166 | INTEGER :: jj,ji |
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167 | |
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168 | ! Calculate the module of the stokes drift on T grid |
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169 | !------------------------------------------------- |
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170 | DO jj = 1, jpj |
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171 | DO ji = 1, jpi |
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172 | tsd2d(ji,jj) = ((zusd2dt(ji,jj) * tmask(ji,jj,1))**2.0 + & |
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173 | & (zvsd2dt(ji,jj) * tmask(ji,jj,1))**2.0)**0.5 |
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174 | END DO |
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175 | END DO |
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176 | ! |
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177 | END SUBROUTINE sbc_qiao |
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178 | |
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179 | SUBROUTINE sbc_wave( kt ) |
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180 | !!--------------------------------------------------------------------- |
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181 | !! *** ROUTINE sbc_wave *** |
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182 | !! |
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183 | !! ** Purpose : read wave parameters from wave model in netcdf files. |
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184 | !! |
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185 | !! ** Method : - Read namelist namsbc_wave |
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186 | !! - Read Cd_n10 fields in netcdf files |
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187 | !! - Read stokes drift 2d in netcdf files |
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188 | !! - Read wave number in netcdf files |
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189 | !! - Compute 3d stokes drift using Breivik et al.,2014 |
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190 | !! formulation |
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191 | !! ** action |
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192 | !!--------------------------------------------------------------------- |
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193 | USE zdf_oce , ONLY : ln_zdfqiao |
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194 | |
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195 | IMPLICIT NONE |
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196 | |
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197 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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198 | ! |
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199 | INTEGER :: ierror ! return error code |
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200 | INTEGER :: ifpr |
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201 | INTEGER :: ios ! Local integer output status for namelist read |
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202 | ! |
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203 | CHARACTER(len=100) :: cn_dir ! Root directory for location of drag coefficient files |
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204 | TYPE(FLD_N), ALLOCATABLE, DIMENSION(:) :: slf_i ! array of namelist informations on the fields to read |
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205 | TYPE(FLD_N) :: sn_cdg, sn_usd, sn_vsd, & |
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206 | & sn_swh, sn_wmp, sn_wnum, sn_tauoc ! informations about the fields to be read |
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207 | !! |
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208 | NAMELIST/namsbc_wave/ sn_cdg, cn_dir, sn_usd, sn_vsd, sn_swh, sn_wmp, sn_wnum, sn_tauoc |
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209 | !!--------------------------------------------------------------------- |
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210 | ! |
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211 | ! ! -------------------- ! |
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212 | IF( kt == nit000 ) THEN ! First call kt=nit000 ! |
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213 | ! ! -------------------- ! |
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214 | REWIND( numnam_ref ) ! Namelist namsbc_wave in reference namelist : File for drag coeff. from wave model |
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215 | READ ( numnam_ref, namsbc_wave, IOSTAT = ios, ERR = 901) |
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216 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_wave in reference namelist', lwp ) |
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217 | |
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218 | REWIND( numnam_cfg ) ! Namelist namsbc_wave in configuration namelist : File for drag coeff. from wave model |
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219 | READ ( numnam_cfg, namsbc_wave, IOSTAT = ios, ERR = 902 ) |
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220 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_wave in configuration namelist', lwp ) |
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221 | IF(lwm) WRITE ( numond, namsbc_wave ) |
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222 | ! |
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223 | IF ( ln_cdgw ) THEN |
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224 | IF ( .NOT. cpl_wdrag ) THEN |
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225 | ALLOCATE( sf_cd(1), STAT=ierror ) !* allocate and fill sf_wave with sn_cdg |
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226 | IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable to allocate sf_wave structure' ) |
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227 | ! |
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228 | ALLOCATE( sf_cd(1)%fnow(jpi,jpj,1) ) |
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229 | IF( sn_cdg%ln_tint ) ALLOCATE( sf_cd(1)%fdta(jpi,jpj,1,2) ) |
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230 | CALL fld_fill( sf_cd, (/ sn_cdg /), cn_dir, 'sbc_wave', 'Wave module ', 'namsbc_wave' ) |
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231 | ENDIF |
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232 | ALLOCATE( cdn_wave(jpi,jpj) ) |
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233 | cdn_wave(:,:) = 0.0 |
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234 | ENDIF |
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235 | |
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236 | IF ( ln_tauoc ) THEN |
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237 | IF ( .NOT. cpl_wstrf ) THEN |
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238 | ALLOCATE( sf_tauoc(1), STAT=ierror ) !* allocate and fill sf_wave with sn_tauoc |
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239 | IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable to allocate sf_wave structure' ) |
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240 | ! |
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241 | ALLOCATE( sf_tauoc(1)%fnow(jpi,jpj,1) ) |
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242 | IF( sn_tauoc%ln_tint ) ALLOCATE( sf_tauoc(1)%fdta(jpi,jpj,1,2) ) |
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243 | CALL fld_fill( sf_tauoc, (/ sn_tauoc /), cn_dir, 'sbc_wave', 'Wave module', 'namsbc_wave' ) |
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244 | ENDIF |
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245 | ALLOCATE( tauoc_wave(jpi,jpj) ) |
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246 | tauoc_wave(:,:) = 0.0 |
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247 | ENDIF |
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248 | |
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249 | IF ( ln_sdw ) THEN |
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250 | ! Find out how many fields have to be read from file if not coupled |
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251 | jpfld=0 |
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252 | jp_usd=0; jp_vsd=0; jp_swh=0; jp_wmp=0 |
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253 | IF( .NOT. cpl_sdrftx ) THEN |
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254 | jpfld=jpfld+1 |
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255 | jp_usd=jpfld |
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256 | ENDIF |
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257 | IF( .NOT. cpl_sdrfty ) THEN |
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258 | jpfld=jpfld+1 |
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259 | jp_vsd=jpfld |
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260 | ENDIF |
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261 | IF( .NOT. cpl_hsig ) THEN |
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262 | jpfld=jpfld+1 |
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263 | jp_swh=jpfld |
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264 | ENDIF |
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265 | IF( .NOT. cpl_wper ) THEN |
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266 | jpfld=jpfld+1 |
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267 | jp_wmp=jpfld |
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268 | ENDIF |
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269 | |
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270 | ! Read from file only the non-coupled fields |
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271 | IF( jpfld > 0 ) THEN |
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272 | ALLOCATE( slf_i(jpfld) ) |
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273 | IF( jp_usd > 0 ) slf_i(jp_usd) = sn_usd |
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274 | IF( jp_vsd > 0 ) slf_i(jp_vsd) = sn_vsd |
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275 | IF( jp_swh > 0 ) slf_i(jp_swh) = sn_swh |
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276 | IF( jp_wmp > 0 ) slf_i(jp_wmp) = sn_wmp |
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277 | ALLOCATE( sf_sd(jpfld), STAT=ierror ) !* allocate and fill sf_sd with stokes drift |
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278 | IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable to allocate sf_wave structure' ) |
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279 | ! |
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280 | DO ifpr= 1, jpfld |
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281 | ALLOCATE( sf_sd(ifpr)%fnow(jpi,jpj,1) ) |
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282 | IF( slf_i(ifpr)%ln_tint ) ALLOCATE( sf_sd(ifpr)%fdta(jpi,jpj,1,2) ) |
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283 | END DO |
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284 | |
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285 | CALL fld_fill( sf_sd, slf_i, cn_dir, 'sbc_wave', 'Wave module ', 'namsbc_wave' ) |
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286 | ENDIF |
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287 | ALLOCATE( usd2d(jpi,jpj),vsd2d(jpi,jpj) ) |
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288 | ALLOCATE( usd3d(jpi,jpj,jpk),vsd3d(jpi,jpj,jpk),wsd3d(jpi,jpj,jpk) ) |
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289 | ALLOCATE( swh(jpi,jpj), wmp(jpi,jpj) ) |
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290 | ALLOCATE( zusd2dt(jpi,jpj), zvsd2dt(jpi,jpj) ) |
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291 | usd3d(:,:,:) = 0._wp ; usd2d(:,:) = 0._wp ; |
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292 | vsd3d(:,:,:) = 0._wp ; vsd2d(:,:) = 0._wp ; |
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293 | wsd3d(:,:,:) = 0._wp ; |
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294 | swh (:,:) = 0._wp ; wmp (:,:) = 0._wp ; |
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295 | IF ( ln_zdfqiao ) THEN !== Vertical mixing enhancement using Qiao,2010 ==! |
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296 | IF ( .NOT. cpl_wnum ) THEN |
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297 | ALLOCATE( sf_wn(1), STAT=ierror ) !* allocate and fill sf_wave with sn_wnum |
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298 | IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable toallocate sf_wave structure' ) |
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299 | ALLOCATE( sf_wn(1)%fnow(jpi,jpj,1) ) |
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300 | IF( sn_wnum%ln_tint ) ALLOCATE( sf_wn(1)%fdta(jpi,jpj,1,2) ) |
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301 | CALL fld_fill( sf_wn, (/ sn_wnum /), cn_dir, 'sbc_wave', 'Wave module', 'namsbc_wave' ) |
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302 | ENDIF |
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303 | ALLOCATE( wnum(jpi,jpj),tsd2d(jpi,jpj) ) |
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304 | wnum(:,:) = 0._wp ; tsd2d(:,:) = 0._wp |
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305 | ENDIF |
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306 | ENDIF |
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307 | ENDIF |
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308 | ! |
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309 | IF ( ln_cdgw .AND. .NOT. cpl_wdrag ) THEN !== Neutral drag coefficient ==! |
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310 | CALL fld_read( kt, nn_fsbc, sf_cd ) ! read from external forcing |
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311 | cdn_wave(:,:) = sf_cd(1)%fnow(:,:,1) |
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312 | ENDIF |
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313 | |
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314 | IF ( ln_tauoc .AND. .NOT. cpl_wstrf ) THEN !== Wave induced stress ==! |
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315 | CALL fld_read( kt, nn_fsbc, sf_tauoc ) !* read wave norm stress from external forcing |
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316 | tauoc_wave(:,:) = sf_tauoc(1)%fnow(:,:,1) |
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317 | ENDIF |
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318 | |
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319 | IF ( ln_sdw ) THEN !== Computation of the 3d Stokes Drift ==! |
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320 | ! |
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321 | ! Read from file only if the field is not coupled |
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322 | IF( jpfld > 0 ) THEN |
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323 | CALL fld_read( kt, nn_fsbc, sf_sd ) !* read wave parameters from external forcing |
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324 | IF( jp_swh > 0 ) swh(:,:) = sf_sd(jp_swh)%fnow(:,:,1) ! significant wave height |
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325 | IF( jp_wmp > 0 ) wmp(:,:) = sf_sd(jp_wmp)%fnow(:,:,1) ! wave mean period |
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326 | IF( jp_usd > 0 ) zusd2dt(:,:) = sf_sd(jp_usd)%fnow(:,:,1) ! 2D zonal Stokes Drift at T point |
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327 | IF( jp_vsd > 0 ) zvsd2dt(:,:) = sf_sd(jp_vsd)%fnow(:,:,1) ! 2D meridional Stokes Drift at T point |
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328 | ENDIF |
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329 | ! |
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330 | ! Read also wave number if needed, so that it is available in coupling routines |
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331 | IF ( ln_zdfqiao .AND. .NOT. cpl_wnum ) THEN |
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332 | CALL fld_read( kt, nn_fsbc, sf_wn ) !* read wave parameters from external forcing |
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333 | wnum(:,:) = sf_wn(1)%fnow(:,:,1) |
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334 | ENDIF |
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335 | |
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336 | !== Computation of the 3d Stokes Drift according to Breivik et al.,2014 |
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337 | !(DOI: 10.1175/JPO-D-14-0020.1)==! |
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338 | ! |
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339 | ! Calculate only if no necessary fields are coupled, if not calculate later after coupling |
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340 | IF( jpfld == 4 ) THEN |
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341 | CALL sbc_stokes() |
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342 | IF ( ln_zdfqiao .AND. .NOT. cpl_wnum ) THEN |
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343 | CALL sbc_qiao() |
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344 | ENDIF |
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345 | ENDIF |
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346 | ENDIF |
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347 | ! |
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348 | END SUBROUTINE sbc_wave |
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349 | |
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350 | !!====================================================================== |
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351 | END MODULE sbcwave |
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