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 tide_mod ! |
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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 | |
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28 | IMPLICIT NONE |
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29 | PRIVATE |
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30 | |
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31 | PUBLIC bdytide_init ! routine called in bdy_init |
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32 | PUBLIC bdy_dta_tides ! routine called in dyn_spg_ts |
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33 | |
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34 | TYPE, PUBLIC :: TIDES_DATA !: Storage for external tidal harmonics data |
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35 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ssh0 !: Tidal constituents : SSH0 (read in file) |
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36 | REAL(wp), POINTER, DIMENSION(:,:,:) :: u0, v0 !: Tidal constituents : U0, V0 (read in file) |
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37 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ssh !: Tidal constituents : SSH (after nodal cor.) |
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38 | REAL(wp), POINTER, DIMENSION(:,:,:) :: u , v !: Tidal constituents : U , V (after nodal cor.) |
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39 | END TYPE TIDES_DATA |
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40 | |
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41 | !$AGRIF_DO_NOT_TREAT |
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42 | TYPE(TIDES_DATA), PUBLIC, DIMENSION(jp_bdy), TARGET :: tides !: External tidal harmonics data |
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43 | !$AGRIF_END_DO_NOT_TREAT |
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44 | TYPE(OBC_DATA) , PUBLIC, DIMENSION(jp_bdy) :: dta_bdy_s !: bdy external data (slow component) |
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45 | |
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46 | INTEGER :: kt_tide |
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47 | |
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48 | !! * Substitutions |
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49 | # include "do_loop_substitute.h90" |
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50 | !!---------------------------------------------------------------------- |
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51 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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52 | !! $Id$ |
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53 | !! Software governed by the CeCILL license (see ./LICENSE) |
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54 | !!---------------------------------------------------------------------- |
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55 | CONTAINS |
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56 | |
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57 | SUBROUTINE bdytide_init |
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58 | !!---------------------------------------------------------------------- |
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59 | !! *** SUBROUTINE bdytide_init *** |
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60 | !! |
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61 | !! ** Purpose : - Read in namelist for tides and initialise external |
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62 | !! tidal harmonics data |
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63 | !! |
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64 | !!---------------------------------------------------------------------- |
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65 | !! namelist variables |
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66 | !!------------------- |
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67 | CHARACTER(len=80) :: filtide !: Filename root for tidal input files |
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68 | LOGICAL :: ln_bdytide_2ddta !: If true, read 2d harmonic 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 :: ios ! Local integer output status for namelist read |
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75 | INTEGER :: nbdy_rdstart, nbdy_loc |
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76 | CHARACTER(LEN=50) :: cerrmsg !: error string |
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77 | CHARACTER(len=80) :: clfile !: full file name for tidal input file |
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78 | REAL(wp),ALLOCATABLE, DIMENSION(:,:,:) :: dta_read !: work space to read in tidal harmonics data |
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79 | REAL(wp),ALLOCATABLE, DIMENSION(:,:) :: ztr, zti !: " " " " " " " " |
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80 | !! |
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81 | TYPE(TIDES_DATA), POINTER :: td !: local short cut |
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82 | !! |
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83 | NAMELIST/nambdy_tide/filtide, ln_bdytide_2ddta |
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84 | !!---------------------------------------------------------------------- |
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85 | ! |
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86 | IF(lwp) WRITE(numout,*) |
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87 | IF(lwp) WRITE(numout,*) 'bdytide_init : initialization of tidal harmonic forcing at open boundaries' |
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88 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~' |
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89 | |
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90 | |
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91 | nbdy_rdstart = 1 |
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92 | DO ib_bdy = 1, nb_bdy |
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93 | IF( nn_dyn2d_dta(ib_bdy) >= 2 ) THEN |
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94 | ! |
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95 | td => tides(ib_bdy) |
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96 | |
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97 | ! Namelist nambdy_tide : tidal harmonic forcing at open boundaries |
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98 | filtide(:) = '' |
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99 | |
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100 | READ ( numnam_ref, nambdy_tide, IOSTAT = ios, ERR = 901) |
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101 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_tide in reference namelist' ) |
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102 | ! |
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103 | ! Need to support possibility of reading more than one |
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104 | ! nambdy_tide from the namelist_cfg internal file. |
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105 | ! Do this by finding the ib_bdy'th occurence of nambdy_tide in the |
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106 | ! character buffer as the starting point. |
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107 | ! |
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108 | nbdy_loc = INDEX( numnam_cfg( nbdy_rdstart: ), 'nambdy_tide' ) |
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109 | IF( nbdy_loc .GT. 0 ) THEN |
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110 | nbdy_rdstart = nbdy_rdstart + nbdy_loc |
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111 | ELSE |
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112 | WRITE(cerrmsg,'(A,I4,A)') 'Error: entry number ',ib_bdy,' of nambdy_tide not found' |
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113 | ios = -1 |
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114 | CALL ctl_nam ( ios , cerrmsg ) |
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115 | ENDIF |
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116 | READ ( numnam_cfg( MAX( 1, nbdy_rdstart - 2 ): ), nambdy_tide, IOSTAT = ios, ERR = 902) |
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117 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nambdy_tide in configuration namelist' ) |
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118 | IF(lwm) WRITE ( numond, nambdy_tide ) |
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119 | ! ! Parameter control and print |
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120 | IF(lwp) WRITE(numout,*) ' ' |
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121 | IF(lwp) WRITE(numout,*) ' Namelist nambdy_tide : tidal harmonic forcing at open boundaries' |
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122 | IF(lwp) WRITE(numout,*) ' read tidal data in 2d files: ', ln_bdytide_2ddta |
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123 | IF(lwp) WRITE(numout,*) ' Number of tidal components to read: ', nb_harmo |
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124 | IF(lwp) THEN |
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125 | WRITE(numout,*) ' Tidal components: ' |
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126 | DO itide = 1, nb_harmo |
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127 | WRITE(numout,*) ' ', tide_harmonics(itide)%cname_tide |
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128 | END DO |
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129 | ENDIF |
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130 | IF(lwp) WRITE(numout,*) ' ' |
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131 | |
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132 | ! Allocate space for tidal harmonics data - get size from OBC data arrays |
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133 | ! ----------------------------------------------------------------------- |
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134 | |
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135 | ! JC: If FRS scheme is used, we assume that tidal is needed over the whole |
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136 | ! relaxation area |
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137 | IF( cn_dyn2d(ib_bdy) == 'frs' ) THEN ; ilen0(:) = idx_bdy(ib_bdy)%nblen (:) |
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138 | ELSE ; ilen0(:) = idx_bdy(ib_bdy)%nblenrim(:) |
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139 | ENDIF |
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140 | |
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141 | ALLOCATE( td%ssh0( ilen0(1), nb_harmo, 2 ) ) |
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142 | ALLOCATE( td%ssh ( ilen0(1), nb_harmo, 2 ) ) |
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143 | |
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144 | ALLOCATE( td%u0( ilen0(2), nb_harmo, 2 ) ) |
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145 | ALLOCATE( td%u ( ilen0(2), nb_harmo, 2 ) ) |
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146 | |
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147 | ALLOCATE( td%v0( ilen0(3), nb_harmo, 2 ) ) |
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148 | ALLOCATE( td%v ( ilen0(3), nb_harmo, 2 ) ) |
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149 | |
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150 | td%ssh0(:,:,:) = 0._wp |
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151 | td%ssh (:,:,:) = 0._wp |
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152 | td%u0 (:,:,:) = 0._wp |
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153 | td%u (:,:,:) = 0._wp |
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154 | td%v0 (:,:,:) = 0._wp |
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155 | td%v (:,:,:) = 0._wp |
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156 | |
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157 | IF( ln_bdytide_2ddta ) THEN |
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158 | ! It is assumed that each data file contains all complex harmonic amplitudes |
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159 | ! given on the global domain (ie global, jpiglo x jpjglo) |
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160 | ! |
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161 | ALLOCATE( zti(jpi,jpj), ztr(jpi,jpj) ) |
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162 | ! |
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163 | ! SSH fields |
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164 | clfile = TRIM(filtide)//'_grid_T.nc' |
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165 | CALL iom_open( clfile , inum ) |
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166 | igrd = 1 ! Everything is at T-points here |
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167 | DO itide = 1, nb_harmo |
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168 | CALL iom_get( inum, jpdom_autoglo, TRIM(tide_harmonics(itide)%cname_tide)//'_z1', ztr(:,:) ) |
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169 | CALL iom_get( inum, jpdom_autoglo, TRIM(tide_harmonics(itide)%cname_tide)//'_z2', zti(:,:) ) |
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170 | DO ib = 1, ilen0(igrd) |
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171 | ii = idx_bdy(ib_bdy)%nbi(ib,igrd) |
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172 | ij = idx_bdy(ib_bdy)%nbj(ib,igrd) |
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173 | IF( ii == 1 .OR. ii == jpi .OR. ij == 1 .OR. ij == jpj ) CYCLE ! to remove? |
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174 | td%ssh0(ib,itide,1) = ztr(ii,ij) |
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175 | td%ssh0(ib,itide,2) = zti(ii,ij) |
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176 | END DO |
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177 | END DO |
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178 | CALL iom_close( inum ) |
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179 | ! |
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180 | ! U fields |
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181 | clfile = TRIM(filtide)//'_grid_U.nc' |
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182 | CALL iom_open( clfile , inum ) |
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183 | igrd = 2 ! Everything is at U-points here |
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184 | DO itide = 1, nb_harmo |
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185 | CALL iom_get ( inum, jpdom_autoglo, TRIM(tide_harmonics(itide)%cname_tide)//'_u1', ztr(:,:) ) |
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186 | CALL iom_get ( inum, jpdom_autoglo, TRIM(tide_harmonics(itide)%cname_tide)//'_u2', zti(:,:) ) |
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187 | DO ib = 1, ilen0(igrd) |
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188 | ii = idx_bdy(ib_bdy)%nbi(ib,igrd) |
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189 | ij = idx_bdy(ib_bdy)%nbj(ib,igrd) |
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190 | IF( ii == 1 .OR. ii == jpi .OR. ij == 1 .OR. ij == jpj ) CYCLE ! to remove? |
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191 | td%u0(ib,itide,1) = ztr(ii,ij) |
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192 | td%u0(ib,itide,2) = zti(ii,ij) |
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193 | END DO |
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194 | END DO |
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195 | CALL iom_close( inum ) |
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196 | ! |
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197 | ! V fields |
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198 | clfile = TRIM(filtide)//'_grid_V.nc' |
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199 | CALL iom_open( clfile , inum ) |
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200 | igrd = 3 ! Everything is at V-points here |
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201 | DO itide = 1, nb_harmo |
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202 | CALL iom_get ( inum, jpdom_autoglo, TRIM(tide_harmonics(itide)%cname_tide)//'_v1', ztr(:,:) ) |
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203 | CALL iom_get ( inum, jpdom_autoglo, TRIM(tide_harmonics(itide)%cname_tide)//'_v2', zti(:,:) ) |
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204 | DO ib = 1, ilen0(igrd) |
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205 | ii = idx_bdy(ib_bdy)%nbi(ib,igrd) |
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206 | ij = idx_bdy(ib_bdy)%nbj(ib,igrd) |
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207 | IF( ii == 1 .OR. ii == jpi .OR. ij == 1 .OR. ij == jpj ) CYCLE ! to remove? |
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208 | td%v0(ib,itide,1) = ztr(ii,ij) |
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209 | td%v0(ib,itide,2) = zti(ii,ij) |
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210 | END DO |
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211 | END DO |
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212 | CALL iom_close( inum ) |
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213 | ! |
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214 | DEALLOCATE( ztr, zti ) |
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215 | ! |
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216 | ELSE |
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217 | ! |
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218 | ! Read tidal data only on bdy segments |
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219 | ! |
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220 | ALLOCATE( dta_read( MAXVAL(ilen0(1:3)), 1, 1 ) ) |
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221 | ! |
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222 | ! Open files and read in tidal forcing data |
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223 | ! ----------------------------------------- |
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224 | |
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225 | DO itide = 1, nb_harmo |
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226 | ! ! SSH fields |
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227 | clfile = TRIM(filtide)//TRIM(tide_harmonics(itide)%cname_tide)//'_grid_T.nc' |
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228 | CALL iom_open( clfile, inum ) |
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229 | CALL fld_map( inum, 'z1' , dta_read(1:ilen0(1),1:1,1:1) , 1, idx_bdy(ib_bdy)%nbmap(:,1) ) |
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230 | td%ssh0(:,itide,1) = dta_read(1:ilen0(1),1,1) |
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231 | CALL fld_map( inum, 'z2' , dta_read(1:ilen0(1),1:1,1:1) , 1, idx_bdy(ib_bdy)%nbmap(:,1) ) |
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232 | td%ssh0(:,itide,2) = dta_read(1:ilen0(1),1,1) |
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233 | CALL iom_close( inum ) |
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234 | ! ! U fields |
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235 | clfile = TRIM(filtide)//TRIM(tide_harmonics(itide)%cname_tide)//'_grid_U.nc' |
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236 | CALL iom_open( clfile, inum ) |
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237 | CALL fld_map( inum, 'u1' , dta_read(1:ilen0(2),1:1,1:1) , 1, idx_bdy(ib_bdy)%nbmap(:,2) ) |
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238 | td%u0(:,itide,1) = dta_read(1:ilen0(2),1,1) |
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239 | CALL fld_map( inum, 'u2' , dta_read(1:ilen0(2),1:1,1:1) , 1, idx_bdy(ib_bdy)%nbmap(:,2) ) |
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240 | td%u0(:,itide,2) = dta_read(1:ilen0(2),1,1) |
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241 | CALL iom_close( inum ) |
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242 | ! ! V fields |
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243 | clfile = TRIM(filtide)//TRIM(tide_harmonics(itide)%cname_tide)//'_grid_V.nc' |
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244 | CALL iom_open( clfile, inum ) |
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245 | CALL fld_map( inum, 'v1' , dta_read(1:ilen0(3),1:1,1:1) , 1, idx_bdy(ib_bdy)%nbmap(:,3) ) |
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246 | td%v0(:,itide,1) = dta_read(1:ilen0(3),1,1) |
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247 | CALL fld_map( inum, 'v2' , dta_read(1:ilen0(3),1:1,1:1) , 1, idx_bdy(ib_bdy)%nbmap(:,3) ) |
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248 | td%v0(:,itide,2) = dta_read(1:ilen0(3),1,1) |
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249 | CALL iom_close( inum ) |
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250 | ! |
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251 | END DO ! end loop on tidal components |
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252 | ! |
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253 | DEALLOCATE( dta_read ) |
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254 | ! |
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255 | ENDIF ! ln_bdytide_2ddta=.true. |
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256 | ! |
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257 | ! Allocate slow varying data in the case of time splitting: |
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258 | ! Do it anyway because at this stage knowledge of free surface scheme is unknown |
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259 | ALLOCATE( dta_bdy_s(ib_bdy)%ssh ( ilen0(1) ) ) |
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260 | ALLOCATE( dta_bdy_s(ib_bdy)%u2d ( ilen0(2) ) ) |
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261 | ALLOCATE( dta_bdy_s(ib_bdy)%v2d ( ilen0(3) ) ) |
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262 | dta_bdy_s(ib_bdy)%ssh(:) = 0._wp |
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263 | dta_bdy_s(ib_bdy)%u2d(:) = 0._wp |
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264 | dta_bdy_s(ib_bdy)%v2d(:) = 0._wp |
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265 | ! |
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266 | ENDIF ! nn_dyn2d_dta(ib_bdy) >= 2 |
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267 | ! |
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268 | END DO ! loop on ib_bdy |
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269 | ! |
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270 | END SUBROUTINE bdytide_init |
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271 | |
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272 | |
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273 | SUBROUTINE bdy_dta_tides( kt, kit, pt_offset ) |
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274 | !!---------------------------------------------------------------------- |
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275 | !! *** SUBROUTINE bdy_dta_tides *** |
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276 | !! |
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277 | !! ** Purpose : - Add tidal forcing to ssh, u2d and v2d OBC data arrays. |
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278 | !! |
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279 | !!---------------------------------------------------------------------- |
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280 | INTEGER, INTENT(in) :: kt ! Main timestep counter |
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281 | INTEGER, OPTIONAL, INTENT(in) :: kit ! Barotropic timestep counter (for timesplitting option) |
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282 | REAL(wp),OPTIONAL, INTENT(in) :: pt_offset ! time offset in units of timesteps |
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283 | ! |
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284 | LOGICAL :: lk_first_btstp ! =.TRUE. if time splitting and first barotropic step |
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285 | INTEGER :: itide, ib_bdy, ib, igrd ! loop indices |
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286 | INTEGER, DIMENSION(jpbgrd) :: ilen0 |
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287 | INTEGER, DIMENSION(1:jpbgrd) :: nblen, nblenrim ! short cuts |
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288 | REAL(wp) :: z_arg, z_sarg, zramp, zoff, z_cost, z_sist, zt_offset |
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289 | !!---------------------------------------------------------------------- |
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290 | ! |
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291 | lk_first_btstp=.TRUE. |
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292 | IF ( PRESENT(kit).AND.( kit /= 1 ) ) THEN ; lk_first_btstp=.FALSE. ; ENDIF |
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293 | |
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294 | zt_offset = 0._wp |
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295 | IF( PRESENT(pt_offset) ) zt_offset = pt_offset |
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296 | |
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297 | ! Absolute time from model initialization: |
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298 | IF( PRESENT(kit) ) THEN |
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299 | z_arg = ( REAL(kt, wp) + ( REAL(kit, wp) + zt_offset - 1. ) / REAL(nn_baro, wp) ) * rdt |
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300 | ELSE |
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301 | z_arg = ( REAL(kt, wp) + zt_offset ) * rdt |
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302 | ENDIF |
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303 | |
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304 | ! Linear ramp on tidal component at open boundaries |
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305 | zramp = 1. |
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306 | IF (ln_tide_ramp) zramp = MIN(MAX( (z_arg - REAL(nit000,wp)*rdt)/(rn_tide_ramp_dt*rday),0.),1.) |
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307 | |
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308 | DO ib_bdy = 1,nb_bdy |
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309 | ! |
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310 | IF( nn_dyn2d_dta(ib_bdy) >= 2 ) THEN |
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311 | ! |
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312 | nblen(1:jpbgrd) = idx_bdy(ib_bdy)%nblen(1:jpbgrd) |
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313 | nblenrim(1:jpbgrd) = idx_bdy(ib_bdy)%nblenrim(1:jpbgrd) |
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314 | ! |
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315 | IF( cn_dyn2d(ib_bdy) == 'frs' ) THEN ; ilen0(:) = nblen (:) |
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316 | ELSE ; ilen0(:) = nblenrim(:) |
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317 | ENDIF |
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318 | ! |
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319 | ! We refresh nodal factors every day below |
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320 | ! This should be done somewhere else |
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321 | IF ( ( nsec_day == NINT(0.5_wp * rdt) .OR. kt==nit000 ) .AND. lk_first_btstp ) THEN |
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322 | ! |
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323 | kt_tide = kt - NINT((REAL(nsec_day,wp) - 0.5_wp * rdt)/rdt) |
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324 | ! |
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325 | IF(lwp) THEN |
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326 | WRITE(numout,*) |
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327 | WRITE(numout,*) 'bdy_tide_dta : Refresh nodal factors for tidal open bdy data at kt=',kt |
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328 | WRITE(numout,*) '~~~~~~~~~~~~~~ ' |
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329 | ENDIF |
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330 | ! |
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331 | CALL tide_init_elevation ( idx=idx_bdy(ib_bdy), td=tides(ib_bdy) ) |
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332 | CALL tide_init_velocities( idx=idx_bdy(ib_bdy), td=tides(ib_bdy) ) |
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333 | ! |
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334 | ENDIF |
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335 | zoff = REAL(-kt_tide,wp) * rdt ! time offset relative to nodal factor computation time |
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336 | ! |
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337 | ! If time splitting, initialize arrays from slow varying open boundary data: |
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338 | IF ( PRESENT(kit) ) THEN |
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339 | IF ( dta_bdy(ib_bdy)%lneed_ssh ) dta_bdy(ib_bdy)%ssh(1:ilen0(1)) = dta_bdy_s(ib_bdy)%ssh(1:ilen0(1)) |
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340 | IF ( dta_bdy(ib_bdy)%lneed_dyn2d ) dta_bdy(ib_bdy)%u2d(1:ilen0(2)) = dta_bdy_s(ib_bdy)%u2d(1:ilen0(2)) |
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341 | IF ( dta_bdy(ib_bdy)%lneed_dyn2d ) dta_bdy(ib_bdy)%v2d(1:ilen0(3)) = dta_bdy_s(ib_bdy)%v2d(1:ilen0(3)) |
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342 | ENDIF |
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343 | ! |
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344 | ! Update open boundary data arrays: |
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345 | DO itide = 1, nb_harmo |
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346 | ! |
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347 | z_sarg = (z_arg + zoff) * tide_harmonics(itide)%omega |
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348 | z_cost = zramp * COS( z_sarg ) |
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349 | z_sist = zramp * SIN( z_sarg ) |
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350 | ! |
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351 | IF ( dta_bdy(ib_bdy)%lneed_ssh ) THEN |
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352 | igrd=1 ! SSH on tracer grid |
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353 | DO ib = 1, ilen0(igrd) |
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354 | dta_bdy(ib_bdy)%ssh(ib) = dta_bdy(ib_bdy)%ssh(ib) + & |
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355 | & ( tides(ib_bdy)%ssh(ib,itide,1)*z_cost + & |
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356 | & tides(ib_bdy)%ssh(ib,itide,2)*z_sist ) |
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357 | END DO |
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358 | ENDIF |
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359 | ! |
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360 | IF ( dta_bdy(ib_bdy)%lneed_dyn2d ) THEN |
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361 | igrd=2 ! U grid |
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362 | DO ib = 1, ilen0(igrd) |
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363 | dta_bdy(ib_bdy)%u2d(ib) = dta_bdy(ib_bdy)%u2d(ib) + & |
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364 | & ( tides(ib_bdy)%u(ib,itide,1)*z_cost + & |
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365 | & tides(ib_bdy)%u(ib,itide,2)*z_sist ) |
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366 | END DO |
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367 | igrd=3 ! V grid |
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368 | DO ib = 1, ilen0(igrd) |
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369 | dta_bdy(ib_bdy)%v2d(ib) = dta_bdy(ib_bdy)%v2d(ib) + & |
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370 | & ( tides(ib_bdy)%v(ib,itide,1)*z_cost + & |
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371 | & tides(ib_bdy)%v(ib,itide,2)*z_sist ) |
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372 | END DO |
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373 | ENDIF |
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374 | END DO |
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375 | END IF |
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376 | END DO |
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377 | ! |
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378 | END SUBROUTINE bdy_dta_tides |
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379 | |
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380 | |
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381 | SUBROUTINE tide_init_elevation( idx, td ) |
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382 | !!---------------------------------------------------------------------- |
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383 | !! *** ROUTINE tide_init_elevation *** |
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384 | !!---------------------------------------------------------------------- |
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385 | TYPE(OBC_INDEX) , INTENT(in ) :: idx ! OBC indices |
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386 | TYPE(TIDES_DATA), INTENT(inout) :: td ! tidal harmonics data |
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387 | ! |
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388 | INTEGER :: itide, igrd, ib ! dummy loop indices |
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389 | INTEGER, DIMENSION(1) :: ilen0 ! length of boundary data (from OBC arrays) |
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390 | REAL(wp),ALLOCATABLE, DIMENSION(:) :: mod_tide, phi_tide |
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391 | !!---------------------------------------------------------------------- |
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392 | ! |
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393 | igrd=1 |
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394 | ! SSH on tracer grid. |
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395 | ilen0(1) = SIZE(td%ssh0(:,1,1)) |
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396 | ! |
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397 | ALLOCATE( mod_tide(ilen0(igrd)), phi_tide(ilen0(igrd)) ) |
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398 | ! |
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399 | DO itide = 1, nb_harmo |
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400 | DO ib = 1, ilen0(igrd) |
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401 | mod_tide(ib)=SQRT(td%ssh0(ib,itide,1)**2.+td%ssh0(ib,itide,2)**2.) |
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402 | phi_tide(ib)=ATAN2(-td%ssh0(ib,itide,2),td%ssh0(ib,itide,1)) |
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403 | END DO |
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404 | DO ib = 1 , ilen0(igrd) |
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405 | mod_tide(ib)=mod_tide(ib)*tide_harmonics(itide)%f |
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406 | phi_tide(ib)=phi_tide(ib)+tide_harmonics(itide)%v0+tide_harmonics(itide)%u |
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407 | ENDDO |
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408 | DO ib = 1 , ilen0(igrd) |
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409 | td%ssh(ib,itide,1)= mod_tide(ib)*COS(phi_tide(ib)) |
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410 | td%ssh(ib,itide,2)=-mod_tide(ib)*SIN(phi_tide(ib)) |
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411 | ENDDO |
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412 | END DO |
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413 | ! |
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414 | DEALLOCATE( mod_tide, phi_tide ) |
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415 | ! |
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416 | END SUBROUTINE tide_init_elevation |
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417 | |
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418 | |
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419 | SUBROUTINE tide_init_velocities( idx, td ) |
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420 | !!---------------------------------------------------------------------- |
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421 | !! *** ROUTINE tide_init_elevation *** |
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422 | !!---------------------------------------------------------------------- |
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423 | TYPE(OBC_INDEX) , INTENT(in ) :: idx ! OBC indices |
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424 | TYPE(TIDES_DATA), INTENT(inout) :: td ! tidal harmonics data |
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425 | ! |
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426 | INTEGER :: itide, igrd, ib ! dummy loop indices |
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427 | INTEGER, DIMENSION(3) :: ilen0 ! length of boundary data (from OBC arrays) |
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428 | REAL(wp),ALLOCATABLE, DIMENSION(:) :: mod_tide, phi_tide |
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429 | !!---------------------------------------------------------------------- |
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430 | ! |
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431 | ilen0(2) = SIZE(td%u0(:,1,1)) |
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432 | ilen0(3) = SIZE(td%v0(:,1,1)) |
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433 | ! |
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434 | igrd=2 ! U grid. |
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435 | ! |
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436 | ALLOCATE( mod_tide(ilen0(igrd)) , phi_tide(ilen0(igrd)) ) |
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437 | ! |
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438 | DO itide = 1, nb_harmo |
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439 | DO ib = 1, ilen0(igrd) |
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440 | mod_tide(ib)=SQRT(td%u0(ib,itide,1)**2.+td%u0(ib,itide,2)**2.) |
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441 | phi_tide(ib)=ATAN2(-td%u0(ib,itide,2),td%u0(ib,itide,1)) |
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442 | END DO |
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443 | DO ib = 1, ilen0(igrd) |
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444 | mod_tide(ib)=mod_tide(ib)*tide_harmonics(itide)%f |
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445 | phi_tide(ib)=phi_tide(ib)+tide_harmonics(itide)%v0 + tide_harmonics(itide)%u |
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446 | ENDDO |
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447 | DO ib = 1, ilen0(igrd) |
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448 | td%u(ib,itide,1)= mod_tide(ib)*COS(phi_tide(ib)) |
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449 | td%u(ib,itide,2)=-mod_tide(ib)*SIN(phi_tide(ib)) |
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450 | ENDDO |
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451 | END DO |
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452 | ! |
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453 | DEALLOCATE( mod_tide , phi_tide ) |
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454 | ! |
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455 | igrd=3 ! V grid. |
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456 | ! |
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457 | ALLOCATE( mod_tide(ilen0(igrd)) , phi_tide(ilen0(igrd)) ) |
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458 | |
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459 | DO itide = 1, nb_harmo |
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460 | DO ib = 1, ilen0(igrd) |
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461 | mod_tide(ib)=SQRT(td%v0(ib,itide,1)**2.+td%v0(ib,itide,2)**2.) |
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462 | phi_tide(ib)=ATAN2(-td%v0(ib,itide,2),td%v0(ib,itide,1)) |
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463 | END DO |
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464 | DO ib = 1, ilen0(igrd) |
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465 | mod_tide(ib)=mod_tide(ib)*tide_harmonics(itide)%f |
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466 | phi_tide(ib)=phi_tide(ib)+tide_harmonics(itide)%v0 + tide_harmonics(itide)%u |
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467 | ENDDO |
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468 | DO ib = 1, ilen0(igrd) |
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469 | td%v(ib,itide,1)= mod_tide(ib)*COS(phi_tide(ib)) |
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470 | td%v(ib,itide,2)=-mod_tide(ib)*SIN(phi_tide(ib)) |
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471 | ENDDO |
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472 | END DO |
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473 | ! |
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474 | DEALLOCATE( mod_tide, phi_tide ) |
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475 | ! |
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476 | END SUBROUTINE tide_init_velocities |
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477 | |
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478 | !!====================================================================== |
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479 | END MODULE bdytides |
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480 | |
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