1 | MODULE obs_oper |
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2 | !!====================================================================== |
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3 | !! *** MODULE obs_oper *** |
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4 | !! Observation diagnostics: Observation operators for various observation |
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5 | !! types |
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6 | !!====================================================================== |
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7 | |
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8 | !!---------------------------------------------------------------------- |
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9 | !! obs_prof_opt : Compute the model counterpart of profile data |
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10 | !! obs_surf_opt : Compute the model counterpart of surface data |
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11 | !!---------------------------------------------------------------------- |
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12 | |
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13 | !! * Modules used |
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14 | USE par_kind, ONLY : & ! Precision variables |
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15 | & wp |
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16 | USE in_out_manager ! I/O manager |
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17 | USE obs_inter_sup ! Interpolation support |
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18 | USE obs_inter_h2d, ONLY : & ! Horizontal interpolation to the obs pt |
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19 | & obs_int_h2d, & |
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20 | & obs_int_h2d_init |
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21 | USE obs_averg_h2d, ONLY : & ! Horizontal averaging to the obs footprint |
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22 | & obs_avg_h2d, & |
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23 | & obs_avg_h2d_init, & |
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24 | & obs_max_fpsize |
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25 | USE obs_inter_z1d, ONLY : & ! Vertical interpolation to the obs pt |
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26 | & obs_int_z1d, & |
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27 | & obs_int_z1d_spl |
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28 | USE obs_const, ONLY : & ! Obs fill value |
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29 | & obfillflt |
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30 | USE dom_oce, ONLY : & |
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31 | & glamt, glamf, & |
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32 | & gphit, gphif |
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33 | USE lib_mpp, ONLY : & ! Warning and stopping routines |
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34 | & ctl_warn, ctl_stop |
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35 | USE sbcdcy, ONLY : & ! For calculation of where it is night-time |
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36 | & sbc_dcy, nday_qsr |
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37 | USE obs_grid, ONLY : & |
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38 | & obs_level_search |
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39 | |
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40 | IMPLICIT NONE |
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41 | |
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42 | !! * Routine accessibility |
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43 | PRIVATE |
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44 | |
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45 | PUBLIC obs_prof_opt, & ! Compute the model counterpart of profile obs |
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46 | & obs_surf_opt ! Compute the model counterpart of surface obs |
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47 | |
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48 | INTEGER, PARAMETER, PUBLIC :: & |
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49 | & imaxavtypes = 20 ! Max number of daily avgd obs types |
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50 | |
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51 | !!---------------------------------------------------------------------- |
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52 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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53 | !! $Id$ |
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54 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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55 | !!---------------------------------------------------------------------- |
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56 | |
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57 | !! * Substitutions |
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58 | # include "domzgr_substitute.h90" |
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59 | CONTAINS |
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60 | |
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61 | |
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62 | SUBROUTINE obs_prof_opt( prodatqc, kt, kpi, kpj, kpk, & |
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63 | & kit000, kdaystp, kvar, & |
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64 | & pvar, pgdept, pgdepw, & |
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65 | & pmask, & |
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66 | & plam, pphi, & |
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67 | & k1dint, k2dint, kdailyavtypes ) |
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68 | |
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69 | !!----------------------------------------------------------------------- |
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70 | !! |
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71 | !! *** ROUTINE obs_pro_opt *** |
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72 | !! |
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73 | !! ** Purpose : Compute the model counterpart of profiles |
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74 | !! data by interpolating from the model grid to the |
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75 | !! observation point. |
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76 | !! |
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77 | !! ** Method : Linearly interpolate to each observation point using |
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78 | !! the model values at the corners of the surrounding grid box. |
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79 | !! |
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80 | !! First, a vertical profile of horizontally interpolated model |
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81 | !! now values is computed at the obs (lon, lat) point. |
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82 | !! Several horizontal interpolation schemes are available: |
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83 | !! - distance-weighted (great circle) (k2dint = 0) |
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84 | !! - distance-weighted (small angle) (k2dint = 1) |
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85 | !! - bilinear (geographical grid) (k2dint = 2) |
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86 | !! - bilinear (quadrilateral grid) (k2dint = 3) |
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87 | !! - polynomial (quadrilateral grid) (k2dint = 4) |
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88 | !! |
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89 | !! Next, the vertical profile is interpolated to the |
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90 | !! data depth points. Two vertical interpolation schemes are |
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91 | !! available: |
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92 | !! - linear (k1dint = 0) |
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93 | !! - Cubic spline (k1dint = 1) |
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94 | !! |
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95 | !! For the cubic spline the 2nd derivative of the interpolating |
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96 | !! polynomial is computed before entering the vertical interpolation |
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97 | !! routine. |
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98 | !! |
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99 | !! If the logical is switched on, the model equivalent is |
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100 | !! a daily mean model temperature field. So, we first compute |
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101 | !! the mean, then interpolate only at the end of the day. |
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102 | !! |
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103 | !! Note: in situ temperature observations must be converted |
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104 | !! to potential temperature (the model variable) prior to |
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105 | !! assimilation. |
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106 | !! |
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107 | !! ** Action : |
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108 | !! |
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109 | !! History : |
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110 | !! ! 97-11 (A. Weaver, S. Ricci, N. Daget) |
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111 | !! ! 06-03 (G. Smith) NEMOVAR migration |
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112 | !! ! 06-10 (A. Weaver) Cleanup |
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113 | !! ! 07-01 (K. Mogensen) Merge of temperature and salinity |
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114 | !! ! 07-03 (K. Mogensen) General handling of profiles |
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115 | !! ! 15-02 (M. Martin) Combined routine for all profile types |
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116 | !! ! 17-02 (M. Martin) Include generalised vertical coordinate changes |
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117 | !!----------------------------------------------------------------------- |
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118 | |
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119 | !! * Modules used |
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120 | USE obs_profiles_def ! Definition of storage space for profile obs. |
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121 | |
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122 | IMPLICIT NONE |
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123 | |
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124 | !! * Arguments |
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125 | TYPE(obs_prof), INTENT(INOUT) :: & |
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126 | & prodatqc ! Subset of profile data passing QC |
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127 | INTEGER, INTENT(IN) :: kt ! Time step |
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128 | INTEGER, INTENT(IN) :: kpi ! Model grid parameters |
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129 | INTEGER, INTENT(IN) :: kpj |
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130 | INTEGER, INTENT(IN) :: kpk |
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131 | INTEGER, INTENT(IN) :: kit000 ! Number of the first time step |
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132 | ! (kit000-1 = restart time) |
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133 | INTEGER, INTENT(IN) :: k1dint ! Vertical interpolation type (see header) |
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134 | INTEGER, INTENT(IN) :: k2dint ! Horizontal interpolation type (see header) |
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135 | INTEGER, INTENT(IN) :: kdaystp ! Number of time steps per day |
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136 | INTEGER, INTENT(IN) :: kvar ! Number of variable in prodatqc |
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137 | REAL(KIND=wp), INTENT(IN), DIMENSION(kpi,kpj,kpk) :: & |
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138 | & pvar, & ! Model field for variable |
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139 | & pmask ! Land-sea mask for variable |
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140 | REAL(KIND=wp), INTENT(IN), DIMENSION(kpi,kpj) :: & |
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141 | & plam, & ! Model longitudes for variable |
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142 | & pphi ! Model latitudes for variable |
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143 | REAL(KIND=wp), INTENT(IN), DIMENSION(kpi,kpj,kpk) :: & |
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144 | & pgdept, & ! Model array of depth T levels |
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145 | & pgdepw ! Model array of depth W levels |
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146 | INTEGER, DIMENSION(imaxavtypes), OPTIONAL :: & |
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147 | & kdailyavtypes ! Types for daily averages |
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148 | |
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149 | !! * Local declarations |
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150 | INTEGER :: ji |
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151 | INTEGER :: jj |
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152 | INTEGER :: jk |
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153 | INTEGER :: jobs |
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154 | INTEGER :: inrc |
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155 | INTEGER :: ipro |
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156 | INTEGER :: idayend |
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157 | INTEGER :: ista |
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158 | INTEGER :: iend |
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159 | INTEGER :: iobs |
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160 | INTEGER :: iin, ijn, ikn, ik ! looping indices over interpolation nodes |
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161 | INTEGER :: inum_obs |
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162 | INTEGER, DIMENSION(imaxavtypes) :: & |
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163 | & idailyavtypes |
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164 | INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: & |
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165 | & igrdi, & |
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166 | & igrdj |
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167 | INTEGER, ALLOCATABLE, DIMENSION(:) :: iv_indic |
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168 | |
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169 | REAL(KIND=wp) :: zlam |
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170 | REAL(KIND=wp) :: zphi |
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171 | REAL(KIND=wp) :: zdaystp |
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172 | REAL(KIND=wp), DIMENSION(kpk) :: & |
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173 | & zobsk, & |
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174 | & zobs2k |
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175 | REAL(KIND=wp), DIMENSION(2,2,1) :: & |
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176 | & zweig1, & |
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177 | & zweig |
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178 | REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: & |
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179 | & zmask, & |
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180 | & zint, & |
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181 | & zinm, & |
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182 | & zgdept, & |
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183 | & zgdepw |
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184 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: & |
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185 | & zglam, & |
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186 | & zgphi |
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187 | REAL(KIND=wp), DIMENSION(1) :: zmsk |
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188 | REAL(KIND=wp), DIMENSION(:,:,:), ALLOCATABLE :: interp_corner |
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189 | |
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190 | LOGICAL :: ld_dailyav |
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191 | |
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192 | !------------------------------------------------------------------------ |
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193 | ! Local initialization |
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194 | !------------------------------------------------------------------------ |
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195 | ! Record and data counters |
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196 | inrc = kt - kit000 + 2 |
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197 | ipro = prodatqc%npstp(inrc) |
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198 | |
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199 | ! Daily average types |
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200 | ld_dailyav = .FALSE. |
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201 | IF ( PRESENT(kdailyavtypes) ) THEN |
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202 | idailyavtypes(:) = kdailyavtypes(:) |
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203 | IF ( ANY (idailyavtypes(:) /= -1) ) ld_dailyav = .TRUE. |
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204 | ELSE |
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205 | idailyavtypes(:) = -1 |
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206 | ENDIF |
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207 | |
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208 | ! Daily means are calculated for values over timesteps: |
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209 | ! [1 <= kt <= kdaystp], [kdaystp+1 <= kt <= 2*kdaystp], ... |
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210 | idayend = MOD( kt - kit000 + 1, kdaystp ) |
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211 | |
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212 | IF ( ld_dailyav ) THEN |
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213 | |
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214 | ! Initialize daily mean for first timestep of the day |
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215 | IF ( idayend == 1 .OR. kt == 0 ) THEN |
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216 | DO jk = 1, jpk |
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217 | DO jj = 1, jpj |
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218 | DO ji = 1, jpi |
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219 | prodatqc%vdmean(ji,jj,jk,kvar) = 0.0 |
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220 | END DO |
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221 | END DO |
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222 | END DO |
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223 | ENDIF |
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224 | |
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225 | DO jk = 1, jpk |
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226 | DO jj = 1, jpj |
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227 | DO ji = 1, jpi |
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228 | ! Increment field for computing daily mean |
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229 | prodatqc%vdmean(ji,jj,jk,kvar) = prodatqc%vdmean(ji,jj,jk,kvar) & |
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230 | & + pvar(ji,jj,jk) |
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231 | END DO |
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232 | END DO |
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233 | END DO |
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234 | |
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235 | ! Compute the daily mean at the end of day |
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236 | zdaystp = 1.0 / REAL( kdaystp ) |
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237 | IF ( idayend == 0 ) THEN |
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238 | IF (lwp) WRITE(numout,*) 'Calculating prodatqc%vdmean on time-step: ',kt |
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239 | CALL FLUSH(numout) |
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240 | DO jk = 1, jpk |
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241 | DO jj = 1, jpj |
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242 | DO ji = 1, jpi |
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243 | prodatqc%vdmean(ji,jj,jk,kvar) = prodatqc%vdmean(ji,jj,jk,kvar) & |
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244 | & * zdaystp |
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245 | END DO |
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246 | END DO |
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247 | END DO |
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248 | ENDIF |
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249 | |
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250 | ENDIF |
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251 | |
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252 | ! Get the data for interpolation |
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253 | ALLOCATE( & |
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254 | & igrdi(2,2,ipro), & |
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255 | & igrdj(2,2,ipro), & |
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256 | & zglam(2,2,ipro), & |
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257 | & zgphi(2,2,ipro), & |
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258 | & zmask(2,2,kpk,ipro), & |
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259 | & zint(2,2,kpk,ipro), & |
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260 | & zgdept(2,2,kpk,ipro), & |
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261 | & zgdepw(2,2,kpk,ipro) & |
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262 | & ) |
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263 | |
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264 | DO jobs = prodatqc%nprofup + 1, prodatqc%nprofup + ipro |
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265 | iobs = jobs - prodatqc%nprofup |
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266 | igrdi(1,1,iobs) = prodatqc%mi(jobs,kvar)-1 |
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267 | igrdj(1,1,iobs) = prodatqc%mj(jobs,kvar)-1 |
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268 | igrdi(1,2,iobs) = prodatqc%mi(jobs,kvar)-1 |
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269 | igrdj(1,2,iobs) = prodatqc%mj(jobs,kvar) |
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270 | igrdi(2,1,iobs) = prodatqc%mi(jobs,kvar) |
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271 | igrdj(2,1,iobs) = prodatqc%mj(jobs,kvar)-1 |
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272 | igrdi(2,2,iobs) = prodatqc%mi(jobs,kvar) |
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273 | igrdj(2,2,iobs) = prodatqc%mj(jobs,kvar) |
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274 | END DO |
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275 | |
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276 | ! Initialise depth arrays |
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277 | zgdept(:,:,:,:) = 0.0 |
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278 | zgdepw(:,:,:,:) = 0.0 |
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279 | |
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280 | CALL obs_int_comm_2d( 2, 2, ipro, kpi, kpj, igrdi, igrdj, plam, zglam ) |
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281 | CALL obs_int_comm_2d( 2, 2, ipro, kpi, kpj, igrdi, igrdj, pphi, zgphi ) |
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282 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pmask, zmask ) |
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283 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pvar, zint ) |
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284 | |
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285 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pgdept, zgdept ) |
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286 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pgdepw, zgdepw ) |
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287 | |
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288 | ! At the end of the day also get interpolated means |
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289 | IF ( ld_dailyav .AND. idayend == 0 ) THEN |
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290 | |
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291 | ALLOCATE( zinm(2,2,kpk,ipro) ) |
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292 | |
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293 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, & |
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294 | & prodatqc%vdmean(:,:,:,kvar), zinm ) |
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295 | |
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296 | ENDIF |
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297 | |
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298 | ! Return if no observations to process |
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299 | ! Has to be done after comm commands to ensure processors |
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300 | ! stay in sync |
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301 | IF ( ipro == 0 ) RETURN |
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302 | |
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303 | DO jobs = prodatqc%nprofup + 1, prodatqc%nprofup + ipro |
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304 | |
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305 | iobs = jobs - prodatqc%nprofup |
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306 | |
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307 | IF ( kt /= prodatqc%mstp(jobs) ) THEN |
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308 | |
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309 | IF(lwp) THEN |
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310 | WRITE(numout,*) |
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311 | WRITE(numout,*) ' E R R O R : Observation', & |
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312 | & ' time step is not consistent with the', & |
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313 | & ' model time step' |
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314 | WRITE(numout,*) ' =========' |
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315 | WRITE(numout,*) |
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316 | WRITE(numout,*) ' Record = ', jobs, & |
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317 | & ' kt = ', kt, & |
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318 | & ' mstp = ', prodatqc%mstp(jobs), & |
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319 | & ' ntyp = ', prodatqc%ntyp(jobs) |
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320 | ENDIF |
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321 | CALL ctl_stop( 'obs_pro_opt', 'Inconsistent time' ) |
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322 | ENDIF |
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323 | |
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324 | zlam = prodatqc%rlam(jobs) |
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325 | zphi = prodatqc%rphi(jobs) |
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326 | |
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327 | ! Horizontal weights |
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328 | ! Masked values are calculated later. |
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329 | IF ( prodatqc%npvend(jobs,kvar) > 0 ) THEN |
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330 | |
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331 | CALL obs_int_h2d_init( 1, 1, k2dint, zlam, zphi, & |
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332 | & zglam(:,:,iobs), zgphi(:,:,iobs), & |
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333 | & zmask(:,:,1,iobs), zweig1, zmsk ) |
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334 | |
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335 | ENDIF |
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336 | |
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337 | IF ( prodatqc%npvend(jobs,kvar) > 0 ) THEN |
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338 | |
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339 | zobsk(:) = obfillflt |
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340 | |
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341 | IF ( ANY (idailyavtypes(:) == prodatqc%ntyp(jobs)) ) THEN |
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342 | |
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343 | IF ( idayend == 0 ) THEN |
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344 | ! Daily averaged data |
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345 | |
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346 | ! vertically interpolate all 4 corners |
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347 | ista = prodatqc%npvsta(jobs,kvar) |
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348 | iend = prodatqc%npvend(jobs,kvar) |
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349 | inum_obs = iend - ista + 1 |
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350 | ALLOCATE(interp_corner(2,2,inum_obs),iv_indic(inum_obs)) |
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351 | |
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352 | DO iin=1,2 |
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353 | DO ijn=1,2 |
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354 | |
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355 | IF ( k1dint == 1 ) THEN |
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356 | CALL obs_int_z1d_spl( kpk, & |
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357 | & zinm(iin,ijn,:,iobs), & |
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358 | & zobs2k, zgdept(iin,ijn,:,iobs), & |
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359 | & zmask(iin,ijn,:,iobs)) |
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360 | ENDIF |
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361 | |
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362 | CALL obs_level_search(kpk, & |
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363 | & zgdept(iin,ijn,:,iobs), & |
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364 | & inum_obs, prodatqc%var(kvar)%vdep(ista:iend), & |
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365 | & iv_indic) |
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366 | |
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367 | CALL obs_int_z1d(kpk, iv_indic, k1dint, inum_obs, & |
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368 | & prodatqc%var(kvar)%vdep(ista:iend), & |
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369 | & zinm(iin,ijn,:,iobs), & |
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370 | & zobs2k, interp_corner(iin,ijn,:), & |
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371 | & zgdept(iin,ijn,:,iobs), & |
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372 | & zmask(iin,ijn,:,iobs)) |
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373 | |
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374 | ENDDO |
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375 | ENDDO |
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376 | |
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377 | ENDIF !idayend |
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378 | |
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379 | ELSE |
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380 | |
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381 | ! Point data |
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382 | |
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383 | ! vertically interpolate all 4 corners |
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384 | ista = prodatqc%npvsta(jobs,kvar) |
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385 | iend = prodatqc%npvend(jobs,kvar) |
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386 | inum_obs = iend - ista + 1 |
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387 | ALLOCATE(interp_corner(2,2,inum_obs), iv_indic(inum_obs)) |
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388 | DO iin=1,2 |
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389 | DO ijn=1,2 |
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390 | |
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391 | IF ( k1dint == 1 ) THEN |
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392 | CALL obs_int_z1d_spl( kpk, & |
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393 | & zint(iin,ijn,:,iobs),& |
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394 | & zobs2k, zgdept(iin,ijn,:,iobs), & |
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395 | & zmask(iin,ijn,:,iobs)) |
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396 | |
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397 | ENDIF |
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398 | |
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399 | CALL obs_level_search(kpk, & |
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400 | & zgdept(iin,ijn,:,iobs),& |
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401 | & inum_obs, prodatqc%var(kvar)%vdep(ista:iend), & |
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402 | & iv_indic) |
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403 | |
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404 | CALL obs_int_z1d(kpk, iv_indic, k1dint, inum_obs, & |
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405 | & prodatqc%var(kvar)%vdep(ista:iend), & |
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406 | & zint(iin,ijn,:,iobs), & |
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407 | & zobs2k,interp_corner(iin,ijn,:), & |
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408 | & zgdept(iin,ijn,:,iobs), & |
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409 | & zmask(iin,ijn,:,iobs) ) |
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410 | |
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411 | ENDDO |
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412 | ENDDO |
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413 | |
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414 | ENDIF |
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415 | |
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416 | !------------------------------------------------------------- |
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417 | ! Compute the horizontal interpolation for every profile level |
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418 | !------------------------------------------------------------- |
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419 | |
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420 | DO ikn=1,inum_obs |
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421 | iend=ista+ikn-1 |
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422 | |
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423 | zweig(:,:,1) = 0._wp |
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424 | |
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425 | ! This code forces the horizontal weights to be |
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426 | ! zero IF the observation is below the bottom of the |
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427 | ! corners of the interpolation nodes, Or if it is in |
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428 | ! the mask. This is important for observations near |
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429 | ! steep bathymetry |
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430 | DO iin=1,2 |
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431 | DO ijn=1,2 |
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432 | |
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433 | depth_loop: DO ik=kpk,2,-1 |
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434 | IF(zmask(iin,ijn,ik-1,iobs ) > 0.9 )THEN |
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435 | |
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436 | zweig(iin,ijn,1) = & |
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437 | & zweig1(iin,ijn,1) * & |
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438 | & MAX( SIGN(1._wp,(zgdepw(iin,ijn,ik,iobs) ) & |
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439 | & - prodatqc%var(kvar)%vdep(iend)),0._wp) |
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440 | |
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441 | EXIT depth_loop |
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442 | |
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443 | ENDIF |
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444 | |
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445 | ENDDO depth_loop |
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446 | |
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447 | ENDDO |
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448 | ENDDO |
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449 | |
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450 | CALL obs_int_h2d( 1, 1, zweig, interp_corner(:,:,ikn), & |
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451 | & prodatqc%var(kvar)%vmod(iend:iend) ) |
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452 | |
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453 | ! Set QC flag for any observations found below the bottom |
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454 | ! needed as the check here is more strict than that in obs_prep |
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455 | IF (sum(zweig) == 0.0_wp) prodatqc%var(kvar)%nvqc(iend:iend)=4 |
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456 | |
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457 | ENDDO |
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458 | |
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459 | DEALLOCATE(interp_corner,iv_indic) |
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460 | |
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461 | ENDIF |
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462 | |
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463 | ENDDO |
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464 | |
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465 | ! Deallocate the data for interpolation |
---|
466 | DEALLOCATE( & |
---|
467 | & igrdi, & |
---|
468 | & igrdj, & |
---|
469 | & zglam, & |
---|
470 | & zgphi, & |
---|
471 | & zmask, & |
---|
472 | & zint, & |
---|
473 | & zgdept, & |
---|
474 | & zgdepw & |
---|
475 | & ) |
---|
476 | |
---|
477 | ! At the end of the day also get interpolated means |
---|
478 | IF ( ld_dailyav .AND. idayend == 0 ) THEN |
---|
479 | DEALLOCATE( zinm ) |
---|
480 | ENDIF |
---|
481 | |
---|
482 | IF ( kvar == prodatqc%nvar ) THEN |
---|
483 | prodatqc%nprofup = prodatqc%nprofup + ipro |
---|
484 | ENDIF |
---|
485 | |
---|
486 | END SUBROUTINE obs_prof_opt |
---|
487 | |
---|
488 | SUBROUTINE obs_surf_opt( surfdataqc, kt, kpi, kpj, & |
---|
489 | & kit000, kdaystp, psurf, psurfmask, & |
---|
490 | & k2dint, ldnightav, plamscl, pphiscl, & |
---|
491 | & lindegrees ) |
---|
492 | |
---|
493 | !!----------------------------------------------------------------------- |
---|
494 | !! |
---|
495 | !! *** ROUTINE obs_surf_opt *** |
---|
496 | !! |
---|
497 | !! ** Purpose : Compute the model counterpart of surface |
---|
498 | !! data by interpolating from the model grid to the |
---|
499 | !! observation point. |
---|
500 | !! |
---|
501 | !! ** Method : Linearly interpolate to each observation point using |
---|
502 | !! the model values at the corners of the surrounding grid box. |
---|
503 | !! |
---|
504 | !! The new model value is first computed at the obs (lon, lat) point. |
---|
505 | !! |
---|
506 | !! Several horizontal interpolation schemes are available: |
---|
507 | !! - distance-weighted (great circle) (k2dint = 0) |
---|
508 | !! - distance-weighted (small angle) (k2dint = 1) |
---|
509 | !! - bilinear (geographical grid) (k2dint = 2) |
---|
510 | !! - bilinear (quadrilateral grid) (k2dint = 3) |
---|
511 | !! - polynomial (quadrilateral grid) (k2dint = 4) |
---|
512 | !! |
---|
513 | !! Two horizontal averaging schemes are also available: |
---|
514 | !! - weighted radial footprint (k2dint = 5) |
---|
515 | !! - weighted rectangular footprint (k2dint = 6) |
---|
516 | !! |
---|
517 | !! |
---|
518 | !! ** Action : |
---|
519 | !! |
---|
520 | !! History : |
---|
521 | !! ! 07-03 (A. Weaver) |
---|
522 | !! ! 15-02 (M. Martin) Combined routine for surface types |
---|
523 | !! ! 17-03 (M. Martin) Added horizontal averaging options |
---|
524 | !!----------------------------------------------------------------------- |
---|
525 | |
---|
526 | !! * Modules used |
---|
527 | USE obs_surf_def ! Definition of storage space for surface observations |
---|
528 | |
---|
529 | IMPLICIT NONE |
---|
530 | |
---|
531 | !! * Arguments |
---|
532 | TYPE(obs_surf), INTENT(INOUT) :: & |
---|
533 | & surfdataqc ! Subset of surface data passing QC |
---|
534 | INTEGER, INTENT(IN) :: kt ! Time step |
---|
535 | INTEGER, INTENT(IN) :: kpi ! Model grid parameters |
---|
536 | INTEGER, INTENT(IN) :: kpj |
---|
537 | INTEGER, INTENT(IN) :: kit000 ! Number of the first time step |
---|
538 | ! (kit000-1 = restart time) |
---|
539 | INTEGER, INTENT(IN) :: kdaystp ! Number of time steps per day |
---|
540 | INTEGER, INTENT(IN) :: k2dint ! Horizontal interpolation type (see header) |
---|
541 | REAL(wp), INTENT(IN), DIMENSION(kpi,kpj) :: & |
---|
542 | & psurf, & ! Model surface field |
---|
543 | & psurfmask ! Land-sea mask |
---|
544 | LOGICAL, INTENT(IN) :: ldnightav ! Logical for averaging night-time data |
---|
545 | REAL(KIND=wp), INTENT(IN) :: & |
---|
546 | & plamscl, & ! Diameter in metres of obs footprint in E/W, N/S directions |
---|
547 | & pphiscl ! This is the full width (rather than half-width) |
---|
548 | LOGICAL, INTENT(IN) :: & |
---|
549 | & lindegrees ! T=> plamscl and pphiscl are specified in degrees, F=> in metres |
---|
550 | |
---|
551 | !! * Local declarations |
---|
552 | INTEGER :: ji |
---|
553 | INTEGER :: jj |
---|
554 | INTEGER :: jobs |
---|
555 | INTEGER :: inrc |
---|
556 | INTEGER :: isurf |
---|
557 | INTEGER :: iobs |
---|
558 | INTEGER :: imaxifp, imaxjfp |
---|
559 | INTEGER :: imodi, imodj |
---|
560 | INTEGER :: idayend |
---|
561 | INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: & |
---|
562 | & igrdi, & |
---|
563 | & igrdj, & |
---|
564 | & igrdip1, & |
---|
565 | & igrdjp1 |
---|
566 | INTEGER, DIMENSION(:,:), SAVE, ALLOCATABLE :: & |
---|
567 | & icount_night, & |
---|
568 | & imask_night |
---|
569 | REAL(wp) :: zlam |
---|
570 | REAL(wp) :: zphi |
---|
571 | REAL(wp), DIMENSION(1) :: zext, zobsmask |
---|
572 | REAL(wp) :: zdaystp |
---|
573 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: & |
---|
574 | & zweig, & |
---|
575 | & zmask, & |
---|
576 | & zsurf, & |
---|
577 | & zsurfm, & |
---|
578 | & zsurftmp, & |
---|
579 | & zglam, & |
---|
580 | & zgphi, & |
---|
581 | & zglamf, & |
---|
582 | & zgphif |
---|
583 | |
---|
584 | REAL(wp), DIMENSION(:,:), SAVE, ALLOCATABLE :: & |
---|
585 | & zintmp, & |
---|
586 | & zouttmp, & |
---|
587 | & zmeanday ! to compute model sst in region of 24h daylight (pole) |
---|
588 | |
---|
589 | !------------------------------------------------------------------------ |
---|
590 | ! Local initialization |
---|
591 | !------------------------------------------------------------------------ |
---|
592 | ! Record and data counters |
---|
593 | inrc = kt - kit000 + 2 |
---|
594 | isurf = surfdataqc%nsstp(inrc) |
---|
595 | |
---|
596 | ! Work out the maximum footprint size for the |
---|
597 | ! interpolation/averaging in model grid-points - has to be even. |
---|
598 | |
---|
599 | CALL obs_max_fpsize( k2dint, plamscl, pphiscl, lindegrees, psurfmask, imaxifp, imaxjfp ) |
---|
600 | |
---|
601 | |
---|
602 | IF ( ldnightav ) THEN |
---|
603 | |
---|
604 | ! Initialize array for night mean |
---|
605 | IF ( kt == 0 ) THEN |
---|
606 | ALLOCATE ( icount_night(kpi,kpj) ) |
---|
607 | ALLOCATE ( imask_night(kpi,kpj) ) |
---|
608 | ALLOCATE ( zintmp(kpi,kpj) ) |
---|
609 | ALLOCATE ( zouttmp(kpi,kpj) ) |
---|
610 | ALLOCATE ( zmeanday(kpi,kpj) ) |
---|
611 | nday_qsr = -1 ! initialisation flag for nbc_dcy |
---|
612 | ENDIF |
---|
613 | |
---|
614 | ! Night-time means are calculated for night-time values over timesteps: |
---|
615 | ! [1 <= kt <= kdaystp], [kdaystp+1 <= kt <= 2*kdaystp], ..... |
---|
616 | idayend = MOD( kt - kit000 + 1, kdaystp ) |
---|
617 | |
---|
618 | ! Initialize night-time mean for first timestep of the day |
---|
619 | IF ( idayend == 1 .OR. kt == 0 ) THEN |
---|
620 | DO jj = 1, jpj |
---|
621 | DO ji = 1, jpi |
---|
622 | surfdataqc%vdmean(ji,jj) = 0.0 |
---|
623 | zmeanday(ji,jj) = 0.0 |
---|
624 | icount_night(ji,jj) = 0 |
---|
625 | END DO |
---|
626 | END DO |
---|
627 | ENDIF |
---|
628 | |
---|
629 | zintmp(:,:) = 0.0 |
---|
630 | zouttmp(:,:) = sbc_dcy( zintmp(:,:), .TRUE. ) |
---|
631 | imask_night(:,:) = INT( zouttmp(:,:) ) |
---|
632 | |
---|
633 | DO jj = 1, jpj |
---|
634 | DO ji = 1, jpi |
---|
635 | ! Increment the temperature field for computing night mean and counter |
---|
636 | surfdataqc%vdmean(ji,jj) = surfdataqc%vdmean(ji,jj) & |
---|
637 | & + psurf(ji,jj) * REAL( imask_night(ji,jj) ) |
---|
638 | zmeanday(ji,jj) = zmeanday(ji,jj) + psurf(ji,jj) |
---|
639 | icount_night(ji,jj) = icount_night(ji,jj) + imask_night(ji,jj) |
---|
640 | END DO |
---|
641 | END DO |
---|
642 | |
---|
643 | ! Compute the night-time mean at the end of the day |
---|
644 | zdaystp = 1.0 / REAL( kdaystp ) |
---|
645 | IF ( idayend == 0 ) THEN |
---|
646 | IF (lwp) WRITE(numout,*) 'Calculating surfdataqc%vdmean on time-step: ',kt |
---|
647 | DO jj = 1, jpj |
---|
648 | DO ji = 1, jpi |
---|
649 | ! Test if "no night" point |
---|
650 | IF ( icount_night(ji,jj) > 0 ) THEN |
---|
651 | surfdataqc%vdmean(ji,jj) = surfdataqc%vdmean(ji,jj) & |
---|
652 | & / REAL( icount_night(ji,jj) ) |
---|
653 | ELSE |
---|
654 | !At locations where there is no night (e.g. poles), |
---|
655 | ! calculate daily mean instead of night-time mean. |
---|
656 | surfdataqc%vdmean(ji,jj) = zmeanday(ji,jj) * zdaystp |
---|
657 | ENDIF |
---|
658 | END DO |
---|
659 | END DO |
---|
660 | ENDIF |
---|
661 | |
---|
662 | ENDIF |
---|
663 | |
---|
664 | ! Get the data for interpolation |
---|
665 | |
---|
666 | ALLOCATE( & |
---|
667 | & zweig(imaxifp,imaxjfp,1), & |
---|
668 | & igrdi(imaxifp,imaxjfp,isurf), & |
---|
669 | & igrdj(imaxifp,imaxjfp,isurf), & |
---|
670 | & zglam(imaxifp,imaxjfp,isurf), & |
---|
671 | & zgphi(imaxifp,imaxjfp,isurf), & |
---|
672 | & zmask(imaxifp,imaxjfp,isurf), & |
---|
673 | & zsurf(imaxifp,imaxjfp,isurf), & |
---|
674 | & zsurftmp(imaxifp,imaxjfp,isurf), & |
---|
675 | & zglamf(imaxifp+1,imaxjfp+1,isurf), & |
---|
676 | & zgphif(imaxifp+1,imaxjfp+1,isurf), & |
---|
677 | & igrdip1(imaxifp+1,imaxjfp+1,isurf), & |
---|
678 | & igrdjp1(imaxifp+1,imaxjfp+1,isurf) & |
---|
679 | & ) |
---|
680 | |
---|
681 | DO jobs = surfdataqc%nsurfup + 1, surfdataqc%nsurfup + isurf |
---|
682 | iobs = jobs - surfdataqc%nsurfup |
---|
683 | DO ji = 0, imaxifp |
---|
684 | imodi = surfdataqc%mi(jobs) - int(imaxifp/2) + ji - 1 |
---|
685 | |
---|
686 | !Deal with wrap around in longitude |
---|
687 | IF ( imodi < 1 ) imodi = imodi + jpiglo |
---|
688 | IF ( imodi > jpiglo ) imodi = imodi - jpiglo |
---|
689 | |
---|
690 | DO jj = 0, imaxjfp |
---|
691 | imodj = surfdataqc%mj(jobs) - int(imaxjfp/2) + jj - 1 |
---|
692 | !If model values are out of the domain to the north/south then |
---|
693 | !set them to be the edge of the domain |
---|
694 | IF ( imodj < 1 ) imodj = 1 |
---|
695 | IF ( imodj > jpjglo ) imodj = jpjglo |
---|
696 | |
---|
697 | igrdip1(ji+1,jj+1,iobs) = imodi |
---|
698 | igrdjp1(ji+1,jj+1,iobs) = imodj |
---|
699 | |
---|
700 | IF ( ji >= 1 .AND. jj >= 1 ) THEN |
---|
701 | igrdi(ji,jj,iobs) = imodi |
---|
702 | igrdj(ji,jj,iobs) = imodj |
---|
703 | ENDIF |
---|
704 | |
---|
705 | END DO |
---|
706 | END DO |
---|
707 | END DO |
---|
708 | |
---|
709 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
---|
710 | & igrdi, igrdj, glamt, zglam ) |
---|
711 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
---|
712 | & igrdi, igrdj, gphit, zgphi ) |
---|
713 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
---|
714 | & igrdi, igrdj, psurfmask, zmask ) |
---|
715 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
---|
716 | & igrdi, igrdj, psurf, zsurf ) |
---|
717 | CALL obs_int_comm_2d( imaxifp+1, imaxjfp+1, isurf, kpi, kpj, & |
---|
718 | & igrdip1, igrdjp1, glamf, zglamf ) |
---|
719 | CALL obs_int_comm_2d( imaxifp+1, imaxjfp+1, isurf, kpi, kpj, & |
---|
720 | & igrdip1, igrdjp1, gphif, zgphif ) |
---|
721 | |
---|
722 | ! At the end of the day get interpolated means |
---|
723 | IF ( idayend == 0 .AND. ldnightav ) THEN |
---|
724 | |
---|
725 | ALLOCATE( & |
---|
726 | & zsurfm(imaxifp,imaxjfp,isurf) & |
---|
727 | & ) |
---|
728 | |
---|
729 | CALL obs_int_comm_2d( imaxifp,imaxjfp, isurf, kpi, kpj, igrdi, igrdj, & |
---|
730 | & surfdataqc%vdmean(:,:), zsurfm ) |
---|
731 | |
---|
732 | ENDIF |
---|
733 | |
---|
734 | ! Loop over observations |
---|
735 | DO jobs = surfdataqc%nsurfup + 1, surfdataqc%nsurfup + isurf |
---|
736 | |
---|
737 | iobs = jobs - surfdataqc%nsurfup |
---|
738 | |
---|
739 | IF ( kt /= surfdataqc%mstp(jobs) ) THEN |
---|
740 | |
---|
741 | IF(lwp) THEN |
---|
742 | WRITE(numout,*) |
---|
743 | WRITE(numout,*) ' E R R O R : Observation', & |
---|
744 | & ' time step is not consistent with the', & |
---|
745 | & ' model time step' |
---|
746 | WRITE(numout,*) ' =========' |
---|
747 | WRITE(numout,*) |
---|
748 | WRITE(numout,*) ' Record = ', jobs, & |
---|
749 | & ' kt = ', kt, & |
---|
750 | & ' mstp = ', surfdataqc%mstp(jobs), & |
---|
751 | & ' ntyp = ', surfdataqc%ntyp(jobs) |
---|
752 | ENDIF |
---|
753 | CALL ctl_stop( 'obs_surf_opt', 'Inconsistent time' ) |
---|
754 | |
---|
755 | ENDIF |
---|
756 | |
---|
757 | zlam = surfdataqc%rlam(jobs) |
---|
758 | zphi = surfdataqc%rphi(jobs) |
---|
759 | |
---|
760 | IF ( ldnightav .AND. idayend == 0 ) THEN |
---|
761 | ! Night-time averaged data |
---|
762 | zsurftmp(:,:,iobs) = zsurfm(:,:,iobs) |
---|
763 | ELSE |
---|
764 | zsurftmp(:,:,iobs) = zsurf(:,:,iobs) |
---|
765 | ENDIF |
---|
766 | |
---|
767 | IF ( k2dint <= 4 ) THEN |
---|
768 | |
---|
769 | ! Get weights to interpolate the model value to the observation point |
---|
770 | CALL obs_int_h2d_init( 1, 1, k2dint, zlam, zphi, & |
---|
771 | & zglam(:,:,iobs), zgphi(:,:,iobs), & |
---|
772 | & zmask(:,:,iobs), zweig, zobsmask ) |
---|
773 | |
---|
774 | ! Interpolate the model value to the observation point |
---|
775 | CALL obs_int_h2d( 1, 1, zweig, zsurftmp(:,:,iobs), zext ) |
---|
776 | |
---|
777 | ELSE |
---|
778 | |
---|
779 | ! Get weights to average the model SLA to the observation footprint |
---|
780 | CALL obs_avg_h2d_init( 1, 1, imaxifp, imaxjfp, k2dint, zlam, zphi, & |
---|
781 | & zglam(:,:,iobs), zgphi(:,:,iobs), & |
---|
782 | & zglamf(:,:,iobs), zgphif(:,:,iobs), & |
---|
783 | & zmask(:,:,iobs), plamscl, pphiscl, & |
---|
784 | & lindegrees, zweig, zobsmask ) |
---|
785 | |
---|
786 | ! Average the model SST to the observation footprint |
---|
787 | CALL obs_avg_h2d( 1, 1, imaxifp, imaxjfp, & |
---|
788 | & zweig, zsurftmp(:,:,iobs), zext ) |
---|
789 | |
---|
790 | ENDIF |
---|
791 | |
---|
792 | IF ( TRIM(surfdataqc%cvars(1)) == 'SLA' .AND. surfdataqc%nextra == 2 ) THEN |
---|
793 | ! ... Remove the MDT from the SSH at the observation point to get the SLA |
---|
794 | surfdataqc%rext(jobs,1) = zext(1) |
---|
795 | surfdataqc%rmod(jobs,1) = surfdataqc%rext(jobs,1) - surfdataqc%rext(jobs,2) |
---|
796 | ELSE |
---|
797 | surfdataqc%rmod(jobs,1) = zext(1) |
---|
798 | ENDIF |
---|
799 | |
---|
800 | IF ( zext(1) == obfillflt ) THEN |
---|
801 | ! If the observation value is a fill value, set QC flag to bad |
---|
802 | surfdataqc%nqc(jobs) = 4 |
---|
803 | ENDIF |
---|
804 | |
---|
805 | END DO |
---|
806 | |
---|
807 | ! Deallocate the data for interpolation |
---|
808 | DEALLOCATE( & |
---|
809 | & zweig, & |
---|
810 | & igrdi, & |
---|
811 | & igrdj, & |
---|
812 | & zglam, & |
---|
813 | & zgphi, & |
---|
814 | & zmask, & |
---|
815 | & zsurf, & |
---|
816 | & zsurftmp, & |
---|
817 | & zglamf, & |
---|
818 | & zgphif, & |
---|
819 | & igrdip1,& |
---|
820 | & igrdjp1 & |
---|
821 | & ) |
---|
822 | |
---|
823 | ! At the end of the day also deallocate night-time mean array |
---|
824 | IF ( idayend == 0 .AND. ldnightav ) THEN |
---|
825 | DEALLOCATE( & |
---|
826 | & zsurfm & |
---|
827 | & ) |
---|
828 | ENDIF |
---|
829 | |
---|
830 | surfdataqc%nsurfup = surfdataqc%nsurfup + isurf |
---|
831 | |
---|
832 | END SUBROUTINE obs_surf_opt |
---|
833 | |
---|
834 | END MODULE obs_oper |
---|