1 | MODULE bdytides |
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2 | !!====================================================================== |
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3 | !! *** MODULE bdytides *** |
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4 | !! Ocean dynamics: Tidal forcing at open boundaries |
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5 | !!====================================================================== |
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6 | !! History : 2.0 ! 2007-01 (D.Storkey) Original code |
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7 | !! 2.3 ! 2008-01 (J.Holt) Add date correction. Origins POLCOMS v6.3 2007 |
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8 | !! 3.0 ! 2008-04 (NEMO team) add in the reference version |
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9 | !! 3.3 ! 2010-09 (D.Storkey and E.O'Dea) bug fixes |
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10 | !! 3.4 ! 2012-09 (G. Reffray and J. Chanut) New inputs + mods |
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11 | !! 3.5 ! 2013-07 (J. Chanut) Compliant with time splitting changes |
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12 | !!---------------------------------------------------------------------- |
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13 | !! bdytide_init : read of namelist and initialisation of tidal harmonics data |
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14 | !! tide_update : calculation of tidal forcing at each timestep |
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15 | !!---------------------------------------------------------------------- |
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16 | USE oce ! ocean dynamics and tracers |
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17 | USE dom_oce ! ocean space and time domain |
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18 | USE phycst ! physical constants |
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19 | USE bdy_oce ! ocean open boundary conditions |
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20 | USE tideini ! |
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21 | USE daymod ! calendar |
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22 | ! |
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23 | USE in_out_manager ! I/O units |
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24 | USE iom ! xIO server |
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25 | USE fldread ! |
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26 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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27 | USE wrk_nemo ! Memory allocation |
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28 | USE timing ! timing |
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29 | |
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30 | IMPLICIT NONE |
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31 | PRIVATE |
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32 | |
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33 | PUBLIC bdytide_init ! routine called in bdy_init |
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34 | PUBLIC bdytide_update ! routine called in bdy_dta |
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35 | PUBLIC bdy_dta_tides ! routine called in dyn_spg_ts |
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36 | |
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37 | TYPE, PUBLIC :: TIDES_DATA !: Storage for external tidal harmonics data |
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38 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ssh0 !: Tidal constituents : SSH0 (read in file) |
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39 | REAL(wp), POINTER, DIMENSION(:,:,:) :: u0, v0 !: Tidal constituents : U0, V0 (read in file) |
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40 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ssh !: Tidal constituents : SSH (after nodal cor.) |
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41 | REAL(wp), POINTER, DIMENSION(:,:,:) :: u , v !: Tidal constituents : U , V (after nodal cor.) |
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42 | END TYPE TIDES_DATA |
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43 | |
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44 | !$AGRIF_DO_NOT_TREAT |
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45 | TYPE(TIDES_DATA), PUBLIC, DIMENSION(jp_bdy), TARGET :: tides !: External tidal harmonics data |
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46 | !$AGRIF_END_DO_NOT_TREAT |
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47 | TYPE(OBC_DATA) , PUBLIC, DIMENSION(jp_bdy) :: dta_bdy_s !: bdy external data (slow component) |
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48 | |
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49 | !!---------------------------------------------------------------------- |
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50 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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51 | !! $Id$ |
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52 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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53 | !!---------------------------------------------------------------------- |
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54 | CONTAINS |
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55 | |
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56 | SUBROUTINE bdytide_init |
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57 | !!---------------------------------------------------------------------- |
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58 | !! *** SUBROUTINE bdytide_init *** |
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59 | !! |
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60 | !! ** Purpose : - Read in namelist for tides and initialise external |
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61 | !! tidal harmonics data |
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62 | !! |
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63 | !!---------------------------------------------------------------------- |
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64 | !! namelist variables |
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65 | !!------------------- |
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66 | CHARACTER(len=80) :: filtide !: Filename root for tidal input files |
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67 | LOGICAL :: ln_bdytide_2ddta !: If true, read 2d harmonic data |
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68 | LOGICAL :: ln_bdytide_conj !: If true, assume complex conjugate tidal data |
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69 | !! |
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70 | INTEGER :: ib_bdy, itide, ib !: dummy loop indices |
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71 | INTEGER :: ii, ij !: dummy loop indices |
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72 | INTEGER :: inum, igrd |
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73 | INTEGER, DIMENSION(3) :: ilen0 !: length of boundary data (from OBC arrays) |
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74 | INTEGER, POINTER, DIMENSION(:) :: nblen, nblenrim ! short cuts |
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75 | INTEGER :: ios ! Local integer output status for namelist read |
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76 | CHARACTER(len=80) :: clfile !: full file name for tidal input file |
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77 | REAL(wp),ALLOCATABLE, DIMENSION(:,:,:) :: dta_read !: work space to read in tidal harmonics data |
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78 | REAL(wp), POINTER, DIMENSION(:,:) :: ztr, zti !: " " " " " " " " |
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79 | !! |
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80 | TYPE(TIDES_DATA), POINTER :: td !: local short cut |
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81 | TYPE(MAP_POINTER), DIMENSION(jpbgrd) :: ibmap_ptr !: array of pointers to nbmap |
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82 | !! |
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83 | NAMELIST/nambdy_tide/filtide, ln_bdytide_2ddta, ln_bdytide_conj |
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84 | !!---------------------------------------------------------------------- |
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85 | ! |
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86 | IF( nn_timing == 1 ) CALL timing_start('bdytide_init') |
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87 | ! |
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88 | IF (nb_bdy>0) THEN |
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89 | IF(lwp) WRITE(numout,*) |
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90 | IF(lwp) WRITE(numout,*) 'bdytide_init : initialization of tidal harmonic forcing at open boundaries' |
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91 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~' |
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92 | ENDIF |
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93 | |
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94 | REWIND(numnam_cfg) |
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95 | |
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96 | DO ib_bdy = 1, nb_bdy |
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97 | IF( nn_dyn2d_dta(ib_bdy) .ge. 2 ) THEN |
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98 | |
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99 | td => tides(ib_bdy) |
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100 | nblen => idx_bdy(ib_bdy)%nblen |
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101 | nblenrim => idx_bdy(ib_bdy)%nblenrim |
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102 | |
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103 | ! Namelist nambdy_tide : tidal harmonic forcing at open boundaries |
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104 | filtide(:) = '' |
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105 | |
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106 | ! Don't REWIND here - may need to read more than one of these namelists. |
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107 | READ ( numnam_ref, nambdy_tide, IOSTAT = ios, ERR = 901) |
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108 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_tide in reference namelist', lwp ) |
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109 | READ ( numnam_cfg, nambdy_tide, IOSTAT = ios, ERR = 902 ) |
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110 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_tide in configuration namelist', lwp ) |
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111 | IF(lwm) WRITE ( numond, nambdy_tide ) |
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112 | ! ! Parameter control and print |
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113 | IF(lwp) WRITE(numout,*) ' ' |
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114 | IF(lwp) WRITE(numout,*) ' Namelist nambdy_tide : tidal harmonic forcing at open boundaries' |
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115 | IF(lwp) WRITE(numout,*) ' read tidal data in 2d files: ', ln_bdytide_2ddta |
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116 | IF(lwp) WRITE(numout,*) ' assume complex conjugate : ', ln_bdytide_conj |
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117 | IF(lwp) WRITE(numout,*) ' Number of tidal components to read: ', nb_harmo |
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118 | IF(lwp) THEN |
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119 | WRITE(numout,*) ' Tidal components: ' |
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120 | DO itide = 1, nb_harmo |
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121 | WRITE(numout,*) ' ', Wave(ntide(itide))%cname_tide |
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122 | END DO |
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123 | ENDIF |
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124 | IF(lwp) WRITE(numout,*) ' ' |
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125 | |
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126 | ! Allocate space for tidal harmonics data - get size from OBC data arrays |
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127 | ! ----------------------------------------------------------------------- |
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128 | |
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129 | ! JC: If FRS scheme is used, we assume that tidal is needed over the whole |
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130 | ! relaxation area |
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131 | IF( cn_dyn2d(ib_bdy) == 'frs' ) THEN |
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132 | ilen0(:)=nblen(:) |
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133 | ELSE |
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134 | ilen0(:)=nblenrim(:) |
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135 | ENDIF |
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136 | |
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137 | ALLOCATE( td%ssh0( ilen0(1), nb_harmo, 2 ) ) |
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138 | ALLOCATE( td%ssh ( ilen0(1), nb_harmo, 2 ) ) |
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139 | |
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140 | ALLOCATE( td%u0( ilen0(2), nb_harmo, 2 ) ) |
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141 | ALLOCATE( td%u ( ilen0(2), nb_harmo, 2 ) ) |
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142 | |
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143 | ALLOCATE( td%v0( ilen0(3), nb_harmo, 2 ) ) |
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144 | ALLOCATE( td%v ( ilen0(3), nb_harmo, 2 ) ) |
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145 | |
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146 | td%ssh0(:,:,:) = 0._wp |
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147 | td%ssh (:,:,:) = 0._wp |
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148 | td%u0 (:,:,:) = 0._wp |
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149 | td%u (:,:,:) = 0._wp |
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150 | td%v0 (:,:,:) = 0._wp |
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151 | td%v (:,:,:) = 0._wp |
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152 | |
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153 | IF (ln_bdytide_2ddta) THEN |
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154 | ! It is assumed that each data file contains all complex harmonic amplitudes |
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155 | ! given on the data domain (ie global, jpidta x jpjdta) |
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156 | ! |
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157 | CALL wrk_alloc( jpi, jpj, zti, ztr ) |
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158 | ! |
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159 | ! SSH fields |
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160 | clfile = TRIM(filtide)//'_grid_T.nc' |
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161 | CALL iom_open (clfile , inum ) |
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162 | igrd = 1 ! Everything is at T-points here |
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163 | DO itide = 1, nb_harmo |
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164 | CALL iom_get ( inum, jpdom_data, TRIM(Wave(ntide(itide))%cname_tide)//'_z1', ztr(:,:) ) |
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165 | CALL iom_get ( inum, jpdom_data, TRIM(Wave(ntide(itide))%cname_tide)//'_z2', zti(:,:) ) |
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166 | DO ib = 1, ilen0(igrd) |
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167 | ii = idx_bdy(ib_bdy)%nbi(ib,igrd) |
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168 | ij = idx_bdy(ib_bdy)%nbj(ib,igrd) |
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169 | td%ssh0(ib,itide,1) = ztr(ii,ij) |
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170 | td%ssh0(ib,itide,2) = zti(ii,ij) |
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171 | END DO |
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172 | END DO |
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173 | CALL iom_close( inum ) |
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174 | ! |
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175 | ! U fields |
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176 | clfile = TRIM(filtide)//'_grid_U.nc' |
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177 | CALL iom_open (clfile , inum ) |
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178 | igrd = 2 ! Everything is at U-points here |
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179 | DO itide = 1, nb_harmo |
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180 | CALL iom_get ( inum, jpdom_data, TRIM(Wave(ntide(itide))%cname_tide)//'_u1', ztr(:,:) ) |
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181 | CALL iom_get ( inum, jpdom_data, TRIM(Wave(ntide(itide))%cname_tide)//'_u2', zti(:,:) ) |
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182 | DO ib = 1, ilen0(igrd) |
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183 | ii = idx_bdy(ib_bdy)%nbi(ib,igrd) |
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184 | ij = idx_bdy(ib_bdy)%nbj(ib,igrd) |
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185 | td%u0(ib,itide,1) = ztr(ii,ij) |
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186 | td%u0(ib,itide,2) = zti(ii,ij) |
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187 | END DO |
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188 | END DO |
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189 | CALL iom_close( inum ) |
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190 | ! |
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191 | ! V fields |
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192 | clfile = TRIM(filtide)//'_grid_V.nc' |
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193 | CALL iom_open (clfile , inum ) |
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194 | igrd = 3 ! Everything is at V-points here |
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195 | DO itide = 1, nb_harmo |
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196 | CALL iom_get ( inum, jpdom_data, TRIM(Wave(ntide(itide))%cname_tide)//'_v1', ztr(:,:) ) |
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197 | CALL iom_get ( inum, jpdom_data, TRIM(Wave(ntide(itide))%cname_tide)//'_v2', zti(:,:) ) |
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198 | DO ib = 1, ilen0(igrd) |
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199 | ii = idx_bdy(ib_bdy)%nbi(ib,igrd) |
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200 | ij = idx_bdy(ib_bdy)%nbj(ib,igrd) |
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201 | td%v0(ib,itide,1) = ztr(ii,ij) |
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202 | td%v0(ib,itide,2) = zti(ii,ij) |
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203 | END DO |
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204 | END DO |
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205 | CALL iom_close( inum ) |
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206 | ! |
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207 | CALL wrk_dealloc( jpi, jpj, ztr, zti ) |
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208 | ! |
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209 | ELSE |
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210 | ! |
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211 | ! Read tidal data only on bdy segments |
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212 | ! |
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213 | ALLOCATE( dta_read( MAXVAL(ilen0(1:3)), 1, 1 ) ) |
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214 | ! |
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215 | ! Set map structure |
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216 | ibmap_ptr(1)%ptr => idx_bdy(ib_bdy)%nbmap(:,1) |
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217 | ibmap_ptr(1)%ll_unstruc = ln_coords_file(ib_bdy) |
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218 | ibmap_ptr(2)%ptr => idx_bdy(ib_bdy)%nbmap(:,2) |
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219 | ibmap_ptr(2)%ll_unstruc = ln_coords_file(ib_bdy) |
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220 | ibmap_ptr(3)%ptr => idx_bdy(ib_bdy)%nbmap(:,3) |
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221 | ibmap_ptr(3)%ll_unstruc = ln_coords_file(ib_bdy) |
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222 | |
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223 | ! Open files and read in tidal forcing data |
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224 | ! ----------------------------------------- |
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225 | |
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226 | DO itide = 1, nb_harmo |
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227 | ! ! SSH fields |
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228 | clfile = TRIM(filtide)//TRIM(Wave(ntide(itide))%cname_tide)//'_grid_T.nc' |
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229 | CALL iom_open( clfile, inum ) |
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230 | CALL fld_map( inum, 'z1' , dta_read(1:ilen0(1),1:1,1:1) , 1, ibmap_ptr(1) ) |
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231 | td%ssh0(:,itide,1) = dta_read(1:ilen0(1),1,1) |
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232 | CALL fld_map( inum, 'z2' , dta_read(1:ilen0(1),1:1,1:1) , 1, ibmap_ptr(1) ) |
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233 | td%ssh0(:,itide,2) = dta_read(1:ilen0(1),1,1) |
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234 | CALL iom_close( inum ) |
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235 | ! ! U fields |
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236 | clfile = TRIM(filtide)//TRIM(Wave(ntide(itide))%cname_tide)//'_grid_U.nc' |
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237 | CALL iom_open( clfile, inum ) |
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238 | CALL fld_map( inum, 'u1' , dta_read(1:ilen0(2),1:1,1:1) , 1, ibmap_ptr(2) ) |
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239 | td%u0(:,itide,1) = dta_read(1:ilen0(2),1,1) |
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240 | CALL fld_map( inum, 'u2' , dta_read(1:ilen0(2),1:1,1:1) , 1, ibmap_ptr(2) ) |
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241 | td%u0(:,itide,2) = dta_read(1:ilen0(2),1,1) |
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242 | CALL iom_close( inum ) |
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243 | ! ! V fields |
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244 | clfile = TRIM(filtide)//TRIM(Wave(ntide(itide))%cname_tide)//'_grid_V.nc' |
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245 | CALL iom_open( clfile, inum ) |
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246 | CALL fld_map( inum, 'v1' , dta_read(1:ilen0(3),1:1,1:1) , 1, ibmap_ptr(3) ) |
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247 | td%v0(:,itide,1) = dta_read(1:ilen0(3),1,1) |
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248 | CALL fld_map( inum, 'v2' , dta_read(1:ilen0(3),1:1,1:1) , 1, ibmap_ptr(3) ) |
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249 | td%v0(:,itide,2) = dta_read(1:ilen0(3),1,1) |
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250 | CALL iom_close( inum ) |
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251 | ! |
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252 | END DO ! end loop on tidal components |
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253 | ! |
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254 | DEALLOCATE( dta_read ) |
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255 | ENDIF ! ln_bdytide_2ddta=.true. |
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256 | ! |
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257 | IF( ln_bdytide_conj ) THEN ! assume complex conjugate in data files |
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258 | td%ssh0(:,:,2) = - td%ssh0(:,:,2) |
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259 | td%u0 (:,:,2) = - td%u0 (:,:,2) |
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260 | td%v0 (:,:,2) = - td%v0 (:,:,2) |
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261 | ENDIF |
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262 | ! |
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263 | ! Allocate slow varying data in the case of time splitting: |
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264 | ! Do it anyway because at this stage knowledge of free surface scheme is unknown |
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265 | ALLOCATE( dta_bdy_s(ib_bdy)%ssh ( ilen0(1) ) ) |
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266 | ALLOCATE( dta_bdy_s(ib_bdy)%u2d ( ilen0(2) ) ) |
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267 | ALLOCATE( dta_bdy_s(ib_bdy)%v2d ( ilen0(3) ) ) |
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268 | dta_bdy_s(ib_bdy)%ssh(:) = 0._wp |
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269 | dta_bdy_s(ib_bdy)%u2d(:) = 0._wp |
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270 | dta_bdy_s(ib_bdy)%v2d(:) = 0._wp |
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271 | ! |
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272 | ENDIF ! nn_dyn2d_dta(ib_bdy) .ge. 2 |
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273 | ! |
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274 | END DO ! loop on ib_bdy |
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275 | ! |
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276 | IF( nn_timing == 1 ) CALL timing_stop('bdytide_init') |
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277 | ! |
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278 | END SUBROUTINE bdytide_init |
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279 | |
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280 | |
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281 | SUBROUTINE bdytide_update( kt, idx, dta, td, jit, time_offset ) |
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282 | !!---------------------------------------------------------------------- |
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283 | !! *** SUBROUTINE bdytide_update *** |
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284 | !! |
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285 | !! ** Purpose : - Add tidal forcing to ssh, u2d and v2d OBC data arrays. |
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286 | !! |
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287 | !!---------------------------------------------------------------------- |
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288 | INTEGER , INTENT(in ) :: kt ! Main timestep counter |
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289 | TYPE(OBC_INDEX) , INTENT(in ) :: idx ! OBC indices |
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290 | TYPE(OBC_DATA) , INTENT(inout) :: dta ! OBC external data |
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291 | TYPE(TIDES_DATA) , INTENT(inout) :: td ! tidal harmonics data |
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292 | INTEGER, OPTIONAL, INTENT(in ) :: jit ! Barotropic timestep counter (for timesplitting option) |
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293 | INTEGER, OPTIONAL, INTENT(in ) :: time_offset ! time offset in units of timesteps. NB. if jit |
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294 | ! ! is present then units = subcycle timesteps. |
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295 | ! ! time_offset = 0 => get data at "now" time level |
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296 | ! ! time_offset = -1 => get data at "before" time level |
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297 | ! ! time_offset = +1 => get data at "after" time level |
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298 | ! ! etc. |
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299 | ! |
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300 | INTEGER :: itide, igrd, ib ! dummy loop indices |
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301 | INTEGER :: time_add ! time offset in units of timesteps |
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302 | INTEGER, DIMENSION(3) :: ilen0 ! length of boundary data (from OBC arrays) |
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303 | REAL(wp) :: z_arg, z_sarg, zflag, zramp ! local scalars |
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304 | REAL(wp), DIMENSION(jpmax_harmo) :: z_sist, z_cost |
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305 | !!---------------------------------------------------------------------- |
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306 | ! |
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307 | IF( nn_timing == 1 ) CALL timing_start('bdytide_update') |
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308 | ! |
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309 | ilen0(1) = SIZE(td%ssh(:,1,1)) |
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310 | ilen0(2) = SIZE(td%u(:,1,1)) |
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311 | ilen0(3) = SIZE(td%v(:,1,1)) |
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312 | |
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313 | zflag=1 |
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314 | IF ( PRESENT(jit) ) THEN |
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315 | IF ( jit /= 1 ) zflag=0 |
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316 | ENDIF |
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317 | |
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318 | IF ( (nsec_day == NINT(0.5_wp * rdt) .OR. kt==nit000) .AND. zflag==1 ) THEN |
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319 | ! |
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320 | kt_tide = kt - (nsec_day - 0.5_wp * rdt)/rdt |
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321 | ! |
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322 | IF(lwp) THEN |
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323 | WRITE(numout,*) |
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324 | WRITE(numout,*) 'bdytide_update : (re)Initialization of the tidal bdy forcing at kt=',kt |
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325 | WRITE(numout,*) '~~~~~~~~~~~~~~ ' |
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326 | ENDIF |
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327 | ! |
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328 | CALL tide_init_elevation ( idx, td ) |
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329 | CALL tide_init_velocities( idx, td ) |
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330 | ! |
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331 | ENDIF |
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332 | |
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333 | time_add = 0 |
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334 | IF( PRESENT(time_offset) ) THEN |
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335 | time_add = time_offset |
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336 | ENDIF |
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337 | |
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338 | IF( PRESENT(jit) ) THEN |
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339 | z_arg = ((kt-kt_tide) * rdt + (jit+0.5_wp*(time_add-1)) * rdt / REAL(nn_baro,wp) ) |
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340 | ELSE |
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341 | z_arg = ((kt-kt_tide)+time_add) * rdt |
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342 | ENDIF |
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343 | |
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344 | ! Linear ramp on tidal component at open boundaries |
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345 | zramp = 1._wp |
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346 | IF (ln_tide_ramp) zramp = MIN(MAX( (z_arg + (kt_tide-nit000)*rdt)/(rdttideramp*rday),0._wp),1._wp) |
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347 | |
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348 | DO itide = 1, nb_harmo |
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349 | z_sarg = z_arg * omega_tide(itide) |
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350 | z_cost(itide) = COS( z_sarg ) |
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351 | z_sist(itide) = SIN( z_sarg ) |
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352 | END DO |
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353 | |
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354 | DO itide = 1, nb_harmo |
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355 | igrd=1 ! SSH on tracer grid |
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356 | DO ib = 1, ilen0(igrd) |
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357 | dta%ssh(ib) = dta%ssh(ib) + zramp*(td%ssh(ib,itide,1)*z_cost(itide) + td%ssh(ib,itide,2)*z_sist(itide)) |
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358 | END DO |
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359 | igrd=2 ! U grid |
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360 | DO ib = 1, ilen0(igrd) |
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361 | dta%u2d(ib) = dta%u2d(ib) + zramp*(td%u (ib,itide,1)*z_cost(itide) + td%u (ib,itide,2)*z_sist(itide)) |
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362 | END DO |
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363 | igrd=3 ! V grid |
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364 | DO ib = 1, ilen0(igrd) |
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365 | dta%v2d(ib) = dta%v2d(ib) + zramp*(td%v (ib,itide,1)*z_cost(itide) + td%v (ib,itide,2)*z_sist(itide)) |
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366 | END DO |
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367 | END DO |
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368 | ! |
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369 | IF( nn_timing == 1 ) CALL timing_stop('bdytide_update') |
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370 | ! |
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371 | END SUBROUTINE bdytide_update |
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372 | |
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373 | SUBROUTINE bdy_dta_tides( kt, kit, time_offset ) |
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374 | !!---------------------------------------------------------------------- |
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375 | !! *** SUBROUTINE bdy_dta_tides *** |
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376 | !! |
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377 | !! ** Purpose : - Add tidal forcing to ssh, u2d and v2d OBC data arrays. |
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378 | !! |
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379 | !!---------------------------------------------------------------------- |
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380 | INTEGER, INTENT(in) :: kt ! Main timestep counter |
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381 | INTEGER, OPTIONAL, INTENT(in) :: kit ! Barotropic timestep counter (for timesplitting option) |
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382 | INTEGER, OPTIONAL, INTENT(in) :: time_offset ! time offset in units of timesteps. NB. if kit |
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383 | ! ! is present then units = subcycle timesteps. |
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384 | ! ! time_offset = 0 => get data at "now" time level |
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385 | ! ! time_offset = -1 => get data at "before" time level |
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386 | ! ! time_offset = +1 => get data at "after" time level |
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387 | ! ! etc. |
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388 | ! |
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389 | LOGICAL :: lk_first_btstp ! =.TRUE. if time splitting and first barotropic step |
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390 | INTEGER :: itide, ib_bdy, ib, igrd ! loop indices |
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391 | INTEGER :: time_add ! time offset in units of timesteps |
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392 | INTEGER, DIMENSION(jpbgrd) :: ilen0 |
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393 | INTEGER, DIMENSION(1:jpbgrd) :: nblen, nblenrim ! short cuts |
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394 | REAL(wp) :: z_arg, z_sarg, zramp, zoff, z_cost, z_sist |
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395 | !!---------------------------------------------------------------------- |
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396 | ! |
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397 | IF( nn_timing == 1 ) CALL timing_start('bdy_dta_tides') |
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398 | ! |
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399 | lk_first_btstp=.TRUE. |
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400 | IF ( PRESENT(kit).AND.( kit /= 1 ) ) THEN ; lk_first_btstp=.FALSE. ; ENDIF |
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401 | |
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402 | time_add = 0 |
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403 | IF( PRESENT(time_offset) ) THEN |
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404 | time_add = time_offset |
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405 | ENDIF |
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406 | |
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407 | ! Absolute time from model initialization: |
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408 | IF( PRESENT(kit) ) THEN |
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409 | z_arg = ( kt + (kit+time_add-1) / REAL(nn_baro,wp) ) * rdt |
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410 | ELSE |
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411 | z_arg = ( kt + time_add ) * rdt |
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412 | ENDIF |
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413 | |
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414 | ! Linear ramp on tidal component at open boundaries |
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415 | zramp = 1. |
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416 | IF (ln_tide_ramp) zramp = MIN(MAX( (z_arg - nit000*rdt)/(rdttideramp*rday),0.),1.) |
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417 | |
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418 | DO ib_bdy = 1,nb_bdy |
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419 | |
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420 | IF ( nn_dyn2d_dta(ib_bdy) .ge. 2 ) THEN |
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421 | |
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422 | nblen(1:jpbgrd) = idx_bdy(ib_bdy)%nblen(1:jpbgrd) |
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423 | nblenrim(1:jpbgrd) = idx_bdy(ib_bdy)%nblenrim(1:jpbgrd) |
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424 | |
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425 | IF( cn_dyn2d(ib_bdy) == 'frs' ) THEN |
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426 | ilen0(:)=nblen(:) |
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427 | ELSE |
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428 | ilen0(:)=nblenrim(:) |
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429 | ENDIF |
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430 | |
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431 | ! We refresh nodal factors every day below |
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432 | ! This should be done somewhere else |
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433 | IF ( ( nsec_day == NINT(0.5_wp * rdt) .OR. kt==nit000 ) .AND. lk_first_btstp ) THEN |
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434 | ! |
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435 | kt_tide = kt - (nsec_day - 0.5_wp * rdt)/rdt |
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436 | ! |
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437 | IF(lwp) THEN |
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438 | WRITE(numout,*) |
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439 | WRITE(numout,*) 'bdy_tide_dta : Refresh nodal factors for tidal open bdy data at kt=',kt |
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440 | WRITE(numout,*) '~~~~~~~~~~~~~~ ' |
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441 | ENDIF |
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442 | ! |
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443 | CALL tide_init_elevation ( idx=idx_bdy(ib_bdy), td=tides(ib_bdy) ) |
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444 | CALL tide_init_velocities( idx=idx_bdy(ib_bdy), td=tides(ib_bdy) ) |
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445 | ! |
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446 | ENDIF |
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447 | zoff = -kt_tide * rdt ! time offset relative to nodal factor computation time |
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448 | ! |
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449 | ! If time splitting, initialize arrays from slow varying open boundary data: |
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450 | IF ( PRESENT(kit) ) THEN |
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451 | IF ( dta_bdy(ib_bdy)%ll_ssh ) dta_bdy(ib_bdy)%ssh(1:ilen0(1)) = dta_bdy_s(ib_bdy)%ssh(1:ilen0(1)) |
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452 | IF ( dta_bdy(ib_bdy)%ll_u2d ) dta_bdy(ib_bdy)%u2d(1:ilen0(2)) = dta_bdy_s(ib_bdy)%u2d(1:ilen0(2)) |
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453 | IF ( dta_bdy(ib_bdy)%ll_v2d ) dta_bdy(ib_bdy)%v2d(1:ilen0(3)) = dta_bdy_s(ib_bdy)%v2d(1:ilen0(3)) |
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454 | ENDIF |
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455 | ! |
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456 | ! Update open boundary data arrays: |
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457 | DO itide = 1, nb_harmo |
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458 | ! |
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459 | z_sarg = (z_arg + zoff) * omega_tide(itide) |
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460 | z_cost = zramp * COS( z_sarg ) |
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461 | z_sist = zramp * SIN( z_sarg ) |
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462 | ! |
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463 | IF ( dta_bdy(ib_bdy)%ll_ssh ) THEN |
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464 | igrd=1 ! SSH on tracer grid |
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465 | DO ib = 1, ilen0(igrd) |
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466 | dta_bdy(ib_bdy)%ssh(ib) = dta_bdy(ib_bdy)%ssh(ib) + & |
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467 | & ( tides(ib_bdy)%ssh(ib,itide,1)*z_cost + & |
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468 | & tides(ib_bdy)%ssh(ib,itide,2)*z_sist ) |
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469 | END DO |
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470 | ENDIF |
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471 | ! |
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472 | IF ( dta_bdy(ib_bdy)%ll_u2d ) THEN |
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473 | igrd=2 ! U grid |
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474 | DO ib = 1, ilen0(igrd) |
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475 | dta_bdy(ib_bdy)%u2d(ib) = dta_bdy(ib_bdy)%u2d(ib) + & |
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476 | & ( tides(ib_bdy)%u(ib,itide,1)*z_cost + & |
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477 | & tides(ib_bdy)%u(ib,itide,2)*z_sist ) |
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478 | END DO |
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479 | ENDIF |
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480 | ! |
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481 | IF ( dta_bdy(ib_bdy)%ll_v2d ) THEN |
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482 | igrd=3 ! V grid |
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483 | DO ib = 1, ilen0(igrd) |
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484 | dta_bdy(ib_bdy)%v2d(ib) = dta_bdy(ib_bdy)%v2d(ib) + & |
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485 | & ( tides(ib_bdy)%v(ib,itide,1)*z_cost + & |
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486 | & tides(ib_bdy)%v(ib,itide,2)*z_sist ) |
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487 | END DO |
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488 | ENDIF |
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489 | END DO |
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490 | END IF |
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491 | END DO |
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492 | ! |
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493 | IF( nn_timing == 1 ) CALL timing_stop('bdy_dta_tides') |
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494 | ! |
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495 | END SUBROUTINE bdy_dta_tides |
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496 | |
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497 | |
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498 | SUBROUTINE tide_init_elevation( idx, td ) |
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499 | !!---------------------------------------------------------------------- |
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500 | !! *** ROUTINE tide_init_elevation *** |
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501 | !!---------------------------------------------------------------------- |
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502 | TYPE(OBC_INDEX) , INTENT(in ) :: idx ! OBC indices |
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503 | TYPE(TIDES_DATA), INTENT(inout) :: td ! tidal harmonics data |
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504 | ! |
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505 | INTEGER :: itide, igrd, ib ! dummy loop indices |
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506 | INTEGER, DIMENSION(1) :: ilen0 ! length of boundary data (from OBC arrays) |
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507 | REAL(wp),ALLOCATABLE, DIMENSION(:) :: mod_tide, phi_tide |
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508 | !!---------------------------------------------------------------------- |
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509 | ! |
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510 | igrd=1 |
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511 | ! SSH on tracer grid. |
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512 | ilen0(1) = SIZE(td%ssh0(:,1,1)) |
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513 | ! |
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514 | ALLOCATE( mod_tide(ilen0(igrd)), phi_tide(ilen0(igrd)) ) |
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515 | ! |
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516 | DO itide = 1, nb_harmo |
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517 | DO ib = 1, ilen0(igrd) |
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518 | mod_tide(ib)=SQRT(td%ssh0(ib,itide,1)**2.+td%ssh0(ib,itide,2)**2.) |
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519 | phi_tide(ib)=ATAN2(-td%ssh0(ib,itide,2),td%ssh0(ib,itide,1)) |
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520 | END DO |
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521 | DO ib = 1 , ilen0(igrd) |
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522 | mod_tide(ib)=mod_tide(ib)*ftide(itide) |
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523 | phi_tide(ib)=phi_tide(ib)+v0tide(itide)+utide(itide) |
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524 | ENDDO |
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525 | DO ib = 1 , ilen0(igrd) |
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526 | td%ssh(ib,itide,1)= mod_tide(ib)*COS(phi_tide(ib)) |
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527 | td%ssh(ib,itide,2)=-mod_tide(ib)*SIN(phi_tide(ib)) |
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528 | ENDDO |
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529 | END DO |
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530 | ! |
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531 | DEALLOCATE( mod_tide, phi_tide ) |
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532 | ! |
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533 | END SUBROUTINE tide_init_elevation |
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534 | |
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535 | |
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536 | SUBROUTINE tide_init_velocities( idx, td ) |
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537 | !!---------------------------------------------------------------------- |
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538 | !! *** ROUTINE tide_init_elevation *** |
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539 | !!---------------------------------------------------------------------- |
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540 | TYPE(OBC_INDEX) , INTENT(in ) :: idx ! OBC indices |
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541 | TYPE(TIDES_DATA), INTENT(inout) :: td ! tidal harmonics data |
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542 | ! |
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543 | INTEGER :: itide, igrd, ib ! dummy loop indices |
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544 | INTEGER, DIMENSION(3) :: ilen0 ! length of boundary data (from OBC arrays) |
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545 | REAL(wp),ALLOCATABLE, DIMENSION(:) :: mod_tide, phi_tide |
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546 | !!---------------------------------------------------------------------- |
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547 | ! |
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548 | ilen0(2) = SIZE(td%u0(:,1,1)) |
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549 | ilen0(3) = SIZE(td%v0(:,1,1)) |
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550 | ! |
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551 | igrd=2 ! U grid. |
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552 | ! |
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553 | ALLOCATE( mod_tide(ilen0(igrd)) , phi_tide(ilen0(igrd)) ) |
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554 | ! |
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555 | DO itide = 1, nb_harmo |
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556 | DO ib = 1, ilen0(igrd) |
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557 | mod_tide(ib)=SQRT(td%u0(ib,itide,1)**2.+td%u0(ib,itide,2)**2.) |
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558 | phi_tide(ib)=ATAN2(-td%u0(ib,itide,2),td%u0(ib,itide,1)) |
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559 | END DO |
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560 | DO ib = 1, ilen0(igrd) |
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561 | mod_tide(ib)=mod_tide(ib)*ftide(itide) |
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562 | phi_tide(ib)=phi_tide(ib)+v0tide(itide)+utide(itide) |
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563 | ENDDO |
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564 | DO ib = 1, ilen0(igrd) |
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565 | td%u(ib,itide,1)= mod_tide(ib)*COS(phi_tide(ib)) |
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566 | td%u(ib,itide,2)=-mod_tide(ib)*SIN(phi_tide(ib)) |
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567 | ENDDO |
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568 | END DO |
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569 | ! |
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570 | DEALLOCATE( mod_tide , phi_tide ) |
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571 | ! |
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572 | igrd=3 ! V grid. |
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573 | ! |
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574 | ALLOCATE( mod_tide(ilen0(igrd)) , phi_tide(ilen0(igrd)) ) |
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575 | |
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576 | DO itide = 1, nb_harmo |
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577 | DO ib = 1, ilen0(igrd) |
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578 | mod_tide(ib)=SQRT(td%v0(ib,itide,1)**2.+td%v0(ib,itide,2)**2.) |
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579 | phi_tide(ib)=ATAN2(-td%v0(ib,itide,2),td%v0(ib,itide,1)) |
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580 | END DO |
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581 | DO ib = 1, ilen0(igrd) |
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582 | mod_tide(ib)=mod_tide(ib)*ftide(itide) |
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583 | phi_tide(ib)=phi_tide(ib)+v0tide(itide)+utide(itide) |
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584 | ENDDO |
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585 | DO ib = 1, ilen0(igrd) |
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586 | td%v(ib,itide,1)= mod_tide(ib)*COS(phi_tide(ib)) |
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587 | td%v(ib,itide,2)=-mod_tide(ib)*SIN(phi_tide(ib)) |
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588 | ENDDO |
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589 | END DO |
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590 | ! |
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591 | DEALLOCATE( mod_tide, phi_tide ) |
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592 | ! |
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593 | END SUBROUTINE tide_init_velocities |
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594 | |
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595 | !!====================================================================== |
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596 | END MODULE bdytides |
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597 | |
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