1 | PROGRAM main |
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2 | !!====================================================================== |
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3 | !! *** PROGRAM main *** |
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4 | !! |
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5 | !! ** Purpose : horizontal extrapolation ("drowning") of ECMWF dataset |
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6 | !! |
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7 | !! |
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8 | !!====================================================================== |
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9 | !! History : 2016-10 (F. Lemarié) Original code largely inspired by SOSIE (L. Brodeau & J.M. Molines) |
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10 | !! |
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11 | !!---------------------------------------------------------------------- |
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12 | USE module_io ! I/O routines |
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13 | USE module_grid ! compute input and output grids |
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14 | !! |
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15 | IMPLICIT NONE |
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16 | !!---------------------------------------------------------------------- |
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17 | !! |
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18 | !! |
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19 | !! |
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20 | !!---------------------------------------------------------------------- |
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21 | ! |
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22 | INTEGER :: ji,jj,jk,kt,kv,jjp1,jjm1,jip1,jim1 |
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23 | INTEGER :: jpka,jpvar ! number of vertical levels for input and target grids |
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24 | INTEGER :: jpi , jpj ! number of grid points in x and y directions |
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25 | INTEGER :: jptime,ctrl,niter,status,ncid |
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26 | INTEGER :: ioerr |
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27 | INTEGER, PARAMETER :: stdout = 6 |
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28 | INTEGER, PARAMETER :: max_iter = 50 |
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29 | !! |
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30 | REAL(8) :: cff,cff1,cff2 |
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31 | !! |
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32 | REAL(8), ALLOCATABLE, DIMENSION(:,:,:,:) :: varin |
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33 | REAL(8), ALLOCATABLE, DIMENSION(:,: ) :: tmask, tmask2, ff_t |
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34 | REAL(8), ALLOCATABLE, DIMENSION(:,: ) :: mask_coast, maskv ! land-sea mask |
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35 | REAL(8), ALLOCATABLE, DIMENSION(:,: ) :: varold,varnew |
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36 | REAL(8), ALLOCATABLE, DIMENSION(: ) :: tmp1d, lat |
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37 | !! |
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38 | CHARACTER(len=500) :: file_u,file_v,file_hpg,file_geos ! ERAi files containing wind components |
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39 | CHARACTER(len=500) :: file_t,file_q, file_m ! ERAi files containing tracers and mask |
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40 | CHARACTER(len=500) :: file_z,file_p,cn_dir ! ERAi files containing surface geopot and pressure |
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41 | CHARACTER(len=500) :: abl_file, grd_file, drwn_file, out_file |
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42 | CHARACTER(len=500) :: namelistf |
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43 | CHARACTER(len=500) :: argument |
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44 | CHARACTER(len= 20), DIMENSION(4) :: dimnames |
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45 | CHARACTER(:), ALLOCATABLE, DIMENSION(:) :: varnames |
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46 | CHARACTER(6) :: mask_var ! name of mask variable in file_m file |
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47 | CHARACTER(6) :: var_name |
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48 | !! |
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49 | LOGICAL :: ln_read_zsurf ! read surface geopotential or not |
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50 | LOGICAL :: ln_read_mask ! read land-sea mask or not |
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51 | LOGICAL :: ln_perio_latbc ! use periodic BC along the domain latitudinal edges (for global data) or use zero-gradient BC (for regional data) |
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52 | LOGICAL :: ln_c1d ! output only a single column in output file |
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53 | LOGICAL :: ln_hpg_frc ! compute horizontal pressure gradient |
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54 | LOGICAL :: ln_geo_wnd ! compute goestrophic wind components |
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55 | LOGICAL :: ln_slp_smth ! apply gibbs oscillation filetring on mean sea level pressure |
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56 | LOGICAL :: ln_drw_smth ! apply gibbs oscillation filetring on mean sea level pressure |
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57 | LOGICAL :: ln_slp_log ! log(sea-level pressure) or sea-level pressure |
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58 | LOGICAL :: ln_lsm_land ! if T mask is 1 over land and 0 over ocean if F it is the other way around |
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59 | INTEGER :: ptemp_method ! way to compute potential temperature |
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60 | !! |
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61 | REAL(8), PARAMETER :: omega = 7.292116e-05 |
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62 | REAL(8), PARAMETER :: rad = 3.141592653589793 / 180. |
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63 | |
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64 | |
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65 | !!--------------------------------------------------------------------- |
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66 | !! List of variables read in the namelist file |
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67 | NAMELIST/nml_out/ grd_file, abl_file, drwn_file, var_name |
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68 | NAMELIST/nml_opt/ ptemp_method, ln_slp_log, ln_slp_smth, ln_read_mask, ln_perio_latbc, & |
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69 | & ln_hpg_frc, ln_geo_wnd, ln_c1d, ln_read_zsurf, ln_lsm_land, ln_drw_smth |
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70 | NAMELIST/nml_fld/ cn_dir, file_u, file_v, file_t, & |
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71 | & file_q, file_z, file_p, file_hpg, file_geos, & |
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72 | & file_m, mask_var |
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73 | !! |
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74 | !! get the namelist file name |
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75 | CALL get_command_argument(1, argument, ctrl, status) |
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76 | ! |
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77 | SELECT CASE(status) |
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78 | CASE(0) |
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79 | namelistf = trim(argument) |
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80 | CASE(-1) |
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81 | WRITE(stdout,*) "### Error: file name too long" |
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82 | STOP |
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83 | CASE DEFAULT |
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84 | namelistf = 'namelist_abl_tools' |
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85 | END SELECT |
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86 | !!--------------------------------------------------------------------- |
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87 | |
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88 | |
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89 | !!--------------------------------------------------------------------- |
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90 | !! read namelist variables |
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91 | ctrl = 0 |
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92 | OPEN(50, file=namelistf, status='old', form='formatted', access='sequential', iostat=ioerr) |
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93 | IF (ioerr /= 0) ctrl = ctrl + 1 |
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94 | READ(50,nml_opt, iostat=ioerr); IF (ioerr /= 0) ctrl = ctrl + 1 |
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95 | READ(50,nml_fld, iostat=ioerr); IF (ioerr /= 0) ctrl = ctrl + 1 |
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96 | READ(50,nml_out, iostat=ioerr); IF (ioerr /= 0) ctrl = ctrl + 1 |
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97 | |
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98 | IF (ctrl > 0) then |
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99 | WRITE(stdout,*) "### E R R O R while reading namelist file '",trim(namelistf),"'" |
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100 | WRITE(stdout,*) " ctrl = ",ctrl |
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101 | STOP |
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102 | ELSE |
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103 | WRITE(stdout,*) " Namelist file ",trim(namelistf)," OK " |
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104 | END IF |
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105 | !!------------------------------------------------------------------------------------- |
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106 | !! list of variables to treat |
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107 | !! |
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108 | !! get the variable name |
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109 | CALL get_command_argument( 2, argument, ctrl, status) |
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110 | SELECT CASE(status) |
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111 | CASE(0) |
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112 | var_name = trim(argument) |
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113 | CASE(-1) |
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114 | WRITE(stdout,*) "### Error: file name too long" |
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115 | STOP |
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116 | END SELECT |
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117 | WRITE(stdout,*) "var_name: ", trim(var_name), Len_Trim(var_name) |
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118 | ! |
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119 | IF (Len_Trim(var_name) == 0) THEN |
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120 | jpvar = 7 |
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121 | allocate(character(len=20) :: varnames(jpvar) ) |
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122 | varnames(1:5) = [character(len=4) :: 'slp', 'uwnd', 'vwnd', 'tair', 'humi' ] |
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123 | IF (ln_hpg_frc) varnames(6:7) = [character(len=4) :: 'uhpg', 'vhpg' ] |
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124 | IF (ln_geo_wnd) varnames(6:7) = [character(len=4) :: 'ugeo', 'vgeo' ] |
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125 | IF( .NOT. Var_Existence( varnames(5), trim(cn_dir)//'/'//trim(abl_file) ) ) jpvar = jpvar - 1 |
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126 | IF( .NOT. Var_Existence( varnames(6), trim(cn_dir)//'/'//trim(abl_file) ) ) jpvar = jpvar - 1 |
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127 | ELSE |
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128 | jpvar = 1 |
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129 | allocate(character(len=20) :: varnames(jpvar) ) |
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130 | varnames = var_name |
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131 | abl_file = trim(var_name)//'_'//trim( abl_file) |
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132 | drwn_file = trim(var_name)//'_'//trim(drwn_file) |
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133 | END IF |
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134 | WRITE(stdout,*) "Number of variables to treat : ",jpvar |
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135 | !!------------------------------------------------------------------------------------- |
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136 | !! read the dimensions for the input files |
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137 | CALL Read_Ncdf_dim ( 'jpka' , trim(cn_dir)//'/'//trim(abl_file), jpka ) |
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138 | CALL Read_Ncdf_dim ( 'time' , trim(cn_dir)//'/'//trim(abl_file), jptime ) |
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139 | CALL Read_Ncdf_dim ( 'lon' , trim(cn_dir)//'/'//trim(abl_file), jpi ) |
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140 | CALL Read_Ncdf_dim ( 'lat' , trim(cn_dir)//'/'//trim(abl_file), jpj ) |
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141 | WRITE(stdout,*) "jpka, jptime, jpi, jpj: ", jpka, jptime, jpi, jpj |
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142 | ! |
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143 | !!--------------------------------------------------------------------- |
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144 | |
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145 | |
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146 | !!--------------------------------------------------------------------- |
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147 | !! allocate arrays |
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148 | ALLOCATE(varin (1:jpi,1:jpj,1:jpka,1)) |
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149 | ALLOCATE(tmask (1:jpi,1:jpj )) |
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150 | ALLOCATE(tmask2(1:jpi,1:jpj )) |
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151 | ALLOCATE(maskv (1:jpi,1:jpj )) |
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152 | ALLOCATE(mask_coast (1:jpi,1:jpj )) |
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153 | ALLOCATE(varold (1:jpi,1:jpj )) |
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154 | ALLOCATE(varnew (1:jpi,1:jpj )) |
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155 | |
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156 | !!--------------------------------------------------------------------- |
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157 | !! Read the mask and remove some closed seas |
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158 | IF (ln_read_mask) THEN |
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159 | CALL init_atm_mask(jpi,jpj,trim(cn_dir)//'/'//trim(file_m),trim(mask_var),ln_lsm_land, tmask ) |
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160 | CALL Read_Ncdf_var ( 'tmask' , trim(cn_dir)//'/'//trim(abl_file), tmask2(:,:) ) |
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161 | ELSE |
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162 | tmask(:,:) = 1. |
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163 | tmask2(:,:) = 1. |
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164 | END IF |
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165 | !! |
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166 | |
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167 | |
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168 | |
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169 | !!--------------------------------------------------------------------- |
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170 | !! create output file |
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171 | !! |
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172 | out_file = trim(cn_dir)//'/'//trim(drwn_file) |
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173 | CALL Init_output_File ( jpi, jpj, jpka-1, trim(cn_dir)//'/'//trim(abl_file), out_file, tmask(:,:) ) |
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174 | |
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175 | !!--------------------------------------------------------------------- |
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176 | !! Initialize the name of the dimensions for the result of the drowning |
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177 | !! |
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178 | dimnames(1) = 'lon' |
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179 | dimnames(2) = 'lat' |
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180 | dimnames(3) = 'jpka' |
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181 | dimnames(4) = 'time' |
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182 | |
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183 | CALL Write_Ncdf_var( 'tmask', dimnames(1:2), trim(out_file), tmask2, 'float' ) |
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184 | |
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185 | !!--------------------------------------------------------------------- |
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186 | ! Read time variable |
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187 | ALLOCATE(tmp1d (1:jptime)) |
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188 | ALLOCATE(lat (1:jpj)) |
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189 | CALL Read_Ncdf_var ( 'time', trim(cn_dir)//'/'//trim(file_t), tmp1d ) |
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190 | CALL Read_Ncdf_var ( 'lat' , trim(cn_dir)//'/'//trim(file_t), lat ) !<-- latitude |
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191 | !!--------------------------------------------------------------------- |
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192 | |
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193 | ! force drowning in the equatorial band with geo wind |
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194 | IF (ln_geo_wnd) THEN |
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195 | ALLOCATE( ff_t(1:jpi,1:jpj) ) |
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196 | DO jj = 1, jpj |
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197 | DO ji = 1, jpi |
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198 | ff_t(ji,jj) = 2. * omega * SIN( rad * lat(jj) ) |
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199 | IF (abs(ff_t(ji,jj)) < 2.5e-5) tmask2(ji,jj) = 0. |
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200 | END DO |
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201 | END DO |
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202 | END IF |
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203 | |
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204 | !=========== |
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205 | DO kv = 1,jpvar |
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206 | !=========== |
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207 | DO kt = 1,jptime |
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208 | !=========== |
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209 | |
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210 | IF( kv == 1 ) THEN |
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211 | CALL Write_Ncdf_var( 'time', dimnames(4:4), trim(out_file), tmp1d(kt:kt), kt, 'double' ) |
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212 | ENDIF |
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213 | |
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214 | ! Read variable to treat |
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215 | print*,'Treat variable ',trim(varnames(kv)),' at time level ',kt |
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216 | IF (trim(varnames(kv)).EQ."slp") THEN |
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217 | CALL Read_Ncdf_var ( trim(varnames(kv)), trim(cn_dir)//'/'//trim(file_hpg), varin(:,:,1,1), kt ) |
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218 | ELSE |
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219 | CALL Read_Ncdf_var ( trim(varnames(kv)), trim(cn_dir)//'/'//trim(abl_file), varin, kt ) |
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220 | END IF |
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221 | |
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222 | |
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223 | !=========== |
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224 | DO jk = 1,jpka |
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225 | !=========== |
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226 | |
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227 | IF ( (trim(varnames(kv))=="uwnd").OR.(trim(varnames(kv))=="vwnd").OR. & |
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228 | & (trim(varnames(kv))=="ugeo").OR.(trim(varnames(kv))=="vgeo").OR. & |
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229 | & (trim(varnames(kv))=="uhpg").OR.(trim(varnames(kv))=="vhpg") ) THEN |
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230 | maskv (1:jpi,1:jpj ) = tmask2(1:jpi,1:jpj ) |
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231 | ELSE |
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232 | maskv (1:jpi,1:jpj ) = tmask(1:jpi,1:jpj ) |
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233 | END IF |
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234 | |
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235 | |
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236 | varold (1:jpi,1:jpj) = varin(1:jpi,1:jpj,jk,1) |
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237 | varnew (1:jpi,1:jpj) = varin(1:jpi,1:jpj,jk,1) |
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238 | mask_coast(1:jpi,1:jpj) = 0. |
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239 | |
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240 | !$$$$$$$$$$$$$$$$ |
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241 | DO niter = 1, max_iter |
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242 | !$$$$$$$$$$$$$$$$ |
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243 | |
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244 | varold(1:jpi,1:jpj) = varnew (1:jpi,1:jpj) |
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245 | |
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246 | IF ( .NOT. (ANY(maskv == 0)) ) THEN |
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247 | EXIT |
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248 | END IF |
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249 | |
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250 | !+++++++++++++++++++++++++++++++++++ |
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251 | ! Build mask_coast |
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252 | DO jj = 1,jpj |
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253 | DO ji = 1,jpi |
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254 | |
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255 | IF (ln_perio_latbc) THEN |
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256 | jip1 = ji + 1; if(ji==jpi) jip1 = 1 |
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257 | jim1 = ji - 1; if(ji== 1) jim1 = jpi |
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258 | ELSE |
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259 | jip1 = ji + 1; if(ji==jpi) jip1 = jpi-1 |
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260 | jim1 = ji - 1; if(ji== 1) jim1 = 2 |
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261 | END IF |
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262 | jjp1 = jj + 1; if(jj==jpj) jjp1 = jpj-1 |
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263 | jjm1 = jj - 1; if(jj== 1) jjm1 = 2 |
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264 | |
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265 | cff = (1.-maskv(ji,jj)) |
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266 | cff1 = maskv(ji,jjp1)+maskv(jip1,jj)+maskv(jim1,jj)+maskv(ji,jjm1) |
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267 | mask_coast(ji,jj) = cff * cff1 |
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268 | IF( mask_coast(ji,jj) > 0. ) mask_coast(ji,jj) = 1. |
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269 | |
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270 | END DO |
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271 | END DO |
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272 | !+++++++++++++++++++++++++++++++++++ |
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273 | |
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274 | DO jj=1,jpj |
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275 | DO ji=1,jpi |
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276 | |
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277 | IF ( mask_coast(ji,jj) == 1. ) THEN |
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278 | |
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279 | IF (ln_perio_latbc) THEN |
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280 | jip1 = ji + 1; if(ji==jpi) jip1 = 1 |
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281 | jim1 = ji - 1; if(ji== 1) jim1 = jpi |
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282 | ELSE |
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283 | jip1 = ji + 1; if(ji==jpi) jip1 = jpi-1 |
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284 | jim1 = ji - 1; if(ji== 1) jim1 = 2 |
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285 | END IF |
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286 | jjp1 = jj + 1; if(jj==jpj) jjp1 = jpj-1 |
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287 | jjm1 = jj - 1; if(jj== 1) jjm1 = 2 |
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288 | |
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289 | cff = maskv(jim1,jjm1)+maskv(jim1,jj)+maskv(jim1,jjp1) & |
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290 | & + maskv(ji ,jjm1)+ maskv(ji ,jjp1) & |
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291 | & + maskv(jip1,jjm1)+maskv(jip1,jj)+maskv(jip1,jjp1) |
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292 | |
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293 | varnew(ji,jj) = (1./cff)*( & |
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294 | & varold(jim1,jjm1)*maskv(jim1,jjm1) & |
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295 | & + varold(jim1,jj )*maskv(jim1,jj ) & |
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296 | & + varold(jim1,jjp1)*maskv(jim1,jjp1) & |
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297 | & + varold(ji ,jjm1)*maskv(ji ,jjm1) & |
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298 | & + varold(ji ,jjp1)*maskv(ji ,jjp1) & |
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299 | & + varold(jip1,jjm1)*maskv(jip1,jjm1) & |
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300 | & + varold(jip1,jj )*maskv(jip1,jj ) & |
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301 | & + varold(jip1,jjp1)*maskv(jip1,jjp1) ) |
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302 | |
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303 | END IF |
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304 | |
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305 | END DO |
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306 | END DO |
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307 | !+++++++++++++++++++++++++++++++++++ |
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308 | maskv(1:jpi,1:jpj) = maskv(1:jpi,1:jpj) + mask_coast(1:jpi,1:jpj) |
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309 | !+++++++++++++++++++++++++++++++++++ |
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310 | !$$$$$$$$$$$$$$$$ |
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311 | END DO |
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312 | !$$$$$$$$$$$$$$$$ |
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313 | |
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314 | ! SMOOTHING AFTER DROWNING |
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315 | IF (ln_drw_smth) THEN |
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316 | maskv (1:jpi,1:jpj ) = 1. |
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317 | ELSE |
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318 | !!only over continent |
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319 | maskv (1:jpi,1:jpj ) = 1. - tmask(1:jpi,1:jpj ) |
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320 | END IF |
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321 | |
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322 | CALL smooth_field( jpi, jpj, varnew, maskv, 3 ) |
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323 | varin(1:jpi,1:jpj,jk,1) = varnew(1:jpi,1:jpj) |
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324 | |
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325 | IF (trim(varnames(kv)).EQ."slp") EXIT |
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326 | |
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327 | !=========== |
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328 | END DO ! jk |
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329 | !=========== |
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330 | |
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331 | IF (trim(varnames(kv)).EQ."slp") THEN |
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332 | CALL Write_Ncdf_var ( trim(varnames(kv)), dimnames(1:4), trim(cn_dir)//'/'//drwn_file, varin(:,:,1,1), kt, 'float' ) |
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333 | ELSE |
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334 | CALL Write_Ncdf_var ( trim(varnames(kv)), dimnames(1:4), trim(cn_dir)//'/'//drwn_file, varin(:,:,:,:), kt, 'float' ) |
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335 | END IF |
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336 | |
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337 | !=========== |
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338 | END DO ! time |
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339 | !=========== |
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340 | |
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341 | !=========== |
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342 | END DO ! variable |
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343 | !=========== |
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344 | |
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345 | STOP |
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346 | ! |
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347 | END PROGRAM main |
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