1 | MODULE flodom |
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2 | !!====================================================================== |
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3 | !! *** MODULE flodom *** |
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4 | !! Ocean floats : domain |
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5 | !!====================================================================== |
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6 | !! History : OPA ! 1998-07 (Y.Drillet, CLIPPER) Original code |
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7 | !!---------------------------------------------------------------------- |
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8 | #if defined key_floats || defined key_esopa |
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9 | !!---------------------------------------------------------------------- |
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10 | !! 'key_floats' float trajectories |
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11 | !!---------------------------------------------------------------------- |
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12 | !! flo_dom : initialization of floats |
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13 | !! findmesh : compute index of position |
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14 | !! dstnce : compute distance between face mesh and floats |
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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 flo_oce ! ocean drifting floats |
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19 | USE in_out_manager ! I/O manager |
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20 | USE lib_mpp ! distribued memory computing library |
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21 | |
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22 | IMPLICIT NONE |
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23 | PRIVATE |
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24 | |
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25 | PUBLIC flo_dom ! routine called by floats.F90 |
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26 | |
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27 | !! * Substitutions |
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28 | # include "domzgr_substitute.h90" |
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29 | !!---------------------------------------------------------------------- |
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30 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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31 | !! $Id$ |
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32 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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33 | !!---------------------------------------------------------------------- |
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34 | CONTAINS |
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35 | |
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36 | SUBROUTINE flo_dom |
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37 | !! --------------------------------------------------------------------- |
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38 | !! *** ROUTINE flo_dom *** |
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39 | !! |
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40 | !! ** Purpose : Initialisation of floats |
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41 | !! |
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42 | !! ** Method : We put the floats in the domain with the latitude, |
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43 | !! the longitude (degree) and the depth (m). |
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44 | !!---------------------------------------------------------------------- |
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45 | CHARACTER (len=21) :: clname ! floats initialisation filename |
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46 | LOGICAL :: llinmesh |
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47 | INTEGER :: ji, jj, jk ! DO loop index on 3 directions |
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48 | INTEGER :: jfl, jfl1 ! number of floats |
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49 | INTEGER :: inum ! logical unit for file read |
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50 | INTEGER :: jtrash ! trash var for reading |
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51 | INTEGER :: ierr |
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52 | INTEGER, DIMENSION(jpnfl) :: iimfl, ijmfl, ikmfl ! index mesh of floats |
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53 | INTEGER, DIMENSION(jpnfl) :: idomfl, ivtest, ihtest ! - - |
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54 | REAL(wp) :: zdxab, zdyad |
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55 | REAL(wp), DIMENSION(jpnnewflo+1) :: zgifl, zgjfl, zgkfl |
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56 | !!--------------------------------------------------------------------- |
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57 | |
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58 | ! Initialisation with the geographical position or restart |
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59 | |
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60 | IF(lwp) WRITE(numout,*) 'flo_dom : compute initial position of floats' |
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61 | IF(lwp) WRITE(numout,*) '~~~~~~~~' |
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62 | IF(lwp) WRITE(numout,*) ' jpnfl = ',jpnfl |
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63 | |
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64 | IF(ln_rstflo) THEN |
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65 | IF(lwp) WRITE(numout,*) ' float restart file read' |
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66 | |
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67 | ! open the restart file |
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68 | CALL ctl_opn( inum, 'restart_float', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
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69 | |
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70 | ! read of the restart file |
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71 | READ(inum,*) ( tpifl (jfl), jfl=1, jpnrstflo), & |
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72 | ( tpjfl (jfl), jfl=1, jpnrstflo), & |
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73 | ( tpkfl (jfl), jfl=1, jpnrstflo), & |
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74 | ( nisobfl(jfl), jfl=1, jpnrstflo), & |
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75 | ( ngrpfl (jfl), jfl=1, jpnrstflo) |
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76 | CLOSE(inum) |
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77 | |
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78 | ! if we want a surface drift ( like PROVOR floats ) |
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79 | IF( ln_argo ) THEN |
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80 | DO jfl = 1, jpnrstflo |
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81 | nisobfl(jfl) = 0 |
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82 | END DO |
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83 | ENDIF |
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84 | |
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85 | IF(lwp) WRITE(numout,*)' flo_dom: END of florstlec' |
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86 | |
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87 | ! It is possible to add new floats. |
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88 | IF(lwp) WRITE(numout,*)' flo_dom:jpnfl jpnrstflo ',jpnfl,jpnrstflo |
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89 | IF( jpnfl > jpnrstflo ) THEN |
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90 | ! open the init file |
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91 | CALL ctl_opn( inum, 'init_float', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
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92 | DO jfl = jpnrstflo+1, jpnfl |
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93 | READ(inum,*) flxx(jfl),flyy(jfl),flzz(jfl), nisobfl(jfl),ngrpfl(jfl),jfl1 |
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94 | END DO |
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95 | CLOSE(inum) |
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96 | IF(lwp) WRITE(numout,*)' flodom: END reading init_float file' |
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97 | |
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98 | ! Test to find the grid point coordonate with the geographical position |
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99 | DO jfl = jpnrstflo+1, jpnfl |
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100 | ihtest(jfl) = 0 |
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101 | ivtest(jfl) = 0 |
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102 | ikmfl(jfl) = 0 |
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103 | # if defined key_mpp_mpi |
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104 | DO ji = MAX(nldi,2), nlei |
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105 | DO jj = MAX(nldj,2), nlej ! NO vector opt. |
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106 | # else |
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107 | DO ji = 2, jpi |
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108 | DO jj = 2, jpj ! NO vector opt. |
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109 | # endif |
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110 | ! For each float we find the indexes of the mesh |
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111 | CALL findmesh(glamf(ji-1,jj-1),gphif(ji-1,jj-1), & |
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112 | glamf(ji-1,jj ),gphif(ji-1,jj ), & |
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113 | glamf(ji ,jj ),gphif(ji ,jj ), & |
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114 | glamf(ji ,jj-1),gphif(ji ,jj-1), & |
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115 | flxx(jfl) ,flyy(jfl) , & |
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116 | glamt(ji ,jj ),gphit(ji ,jj ), llinmesh) |
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117 | IF(llinmesh) THEN |
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118 | iimfl(jfl) = ji |
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119 | ijmfl(jfl) = jj |
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120 | ihtest(jfl) = ihtest(jfl)+1 |
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121 | DO jk = 1, jpk-1 |
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122 | IF( (fsdepw(ji,jj,jk) <= flzz(jfl)) .AND. (fsdepw(ji,jj,jk+1) > flzz(jfl)) ) THEN |
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123 | ikmfl(jfl) = jk |
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124 | ivtest(jfl) = ivtest(jfl) + 1 |
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125 | ENDIF |
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126 | END DO |
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127 | ENDIF |
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128 | END DO |
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129 | END DO |
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130 | IF(lwp) WRITE(numout,*)' flo_dom: END findmesh' |
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131 | |
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132 | ! If the float is in a mesh computed by an other processor we put iimfl=ijmfl=-1 |
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133 | IF( ihtest(jfl) == 0 ) THEN |
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134 | iimfl(jfl) = -1 |
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135 | ijmfl(jfl) = -1 |
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136 | ENDIF |
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137 | END DO |
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138 | |
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139 | ! A zero in the sum of the arrays "ihtest" and "ivtest" |
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140 | # if defined key_mpp_mpi |
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141 | CALL mpp_sum(ihtest,jpnfl) |
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142 | CALL mpp_sum(ivtest,jpnfl) |
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143 | # endif |
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144 | DO jfl = jpnrstflo+1, jpnfl |
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145 | IF( (ihtest(jfl) > 1 ) .OR. ( ivtest(jfl) > 1) ) THEN |
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146 | IF(lwp) WRITE(numout,*) 'THE FLOAT',jfl,' IS NOT IN ONLY ONE MESH' |
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147 | STOP |
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148 | ENDIF |
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149 | IF( (ihtest(jfl) == 0) ) THEN |
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150 | IF(lwp) WRITE(numout,*)'THE FLOAT',jfl,' IS IN NO MESH' |
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151 | STOP |
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152 | ENDIF |
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153 | END DO |
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154 | |
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155 | ! We compute the distance between the float and the face of the mesh |
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156 | DO jfl = jpnrstflo+1, jpnfl |
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157 | ! Made only if the float is in the domain of the processor |
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158 | IF( (iimfl(jfl) >= 0) .AND. (ijmfl(jfl) >= 0) ) THEN |
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159 | |
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160 | ! TEST TO KNOW IF THE FLOAT IS NOT INITIALISED IN THE COAST |
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161 | |
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162 | idomfl(jfl) = 0 |
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163 | IF( tmask(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)) == 0. ) idomfl(jfl) = 1 |
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164 | |
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165 | ! Computation of the distance between the float and the faces of the mesh |
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166 | ! zdxab |
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167 | ! . |
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168 | ! B----.---------C |
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169 | ! | . | |
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170 | ! |<------>flo | |
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171 | ! | ^ | |
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172 | ! | |.....|....zdyad |
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173 | ! | | | |
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174 | ! A--------|-----D |
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175 | ! |
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176 | |
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177 | zdxab = dstnce( flxx(jfl), flyy(jfl), glamf(iimfl(jfl)-1,ijmfl(jfl)-1), flyy(jfl) ) |
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178 | zdyad = dstnce( flxx(jfl), flyy(jfl), flxx(jfl), gphif(iimfl(jfl)-1,ijmfl(jfl)-1) ) |
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179 | |
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180 | ! Translation of this distances (in meter) in indexes |
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181 | |
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182 | zgifl(jfl-jpnrstflo)= (iimfl(jfl)-0.5) + zdxab/e1u(iimfl(jfl)-1,ijmfl(jfl)) + (mig(1)-jpizoom) |
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183 | zgjfl(jfl-jpnrstflo)= (ijmfl(jfl)-0.5) + zdyad/e2v(iimfl(jfl),ijmfl(jfl)-1) + (mjg(1)-jpjzoom) |
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184 | zgkfl(jfl-jpnrstflo) = (( fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)+1) - flzz(jfl) )* ikmfl(jfl)) & |
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185 | & / ( fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)+1) & |
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186 | & - fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl) ) ) & |
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187 | & + (( flzz(jfl)-fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)) ) *(ikmfl(jfl)+1)) & |
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188 | & / ( fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)+1) & |
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189 | & - fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)) ) |
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190 | ELSE |
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191 | zgifl(jfl-jpnrstflo) = 0.e0 |
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192 | zgjfl(jfl-jpnrstflo) = 0.e0 |
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193 | zgkfl(jfl-jpnrstflo) = 0.e0 |
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194 | ENDIF |
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195 | END DO |
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196 | |
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197 | ! The sum of all the arrays zgifl, zgjfl, zgkfl give 3 arrays with the positions of all the floats. |
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198 | IF( lk_mpp ) THEN |
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199 | CALL mpp_sum( zgjfl, jpnnewflo ) ! sums over the global domain |
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200 | CALL mpp_sum( zgkfl, jpnnewflo ) |
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201 | IF(lwp) WRITE(numout,*) (zgifl(jfl),jfl=1,jpnnewflo) |
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202 | IF(lwp) WRITE(numout,*) (zgjfl(jfl),jfl=1,jpnnewflo) |
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203 | IF(lwp) WRITE(numout,*) (zgkfl(jfl),jfl=1,jpnnewflo) |
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204 | ENDIF |
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205 | |
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206 | DO jfl = jpnrstflo+1, jpnfl |
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207 | tpifl(jfl) = zgifl(jfl-jpnrstflo) |
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208 | tpjfl(jfl) = zgjfl(jfl-jpnrstflo) |
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209 | tpkfl(jfl) = zgkfl(jfl-jpnrstflo) |
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210 | END DO |
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211 | ENDIF |
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212 | ELSE |
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213 | |
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214 | IF( ln_ariane )THEN |
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215 | |
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216 | IF(lwp) WRITE(numout,*) ' init_float read with ariane convention (mesh indexes)' |
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217 | |
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218 | ! First initialisation of floats with ariane convention |
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219 | ! |
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220 | ! The indexes are read directly from file (warning ariane |
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221 | ! convention, are refered to |
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222 | ! U,V,W grids - and not T-) |
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223 | ! The isobar advection is managed with the sign of tpkfl ( >0 -> 3D |
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224 | ! advection, <0 -> 2D) |
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225 | ! Some variables are not read, as - gl : time index; 4th |
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226 | ! column |
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227 | ! - transport : transport ; 5th |
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228 | ! column |
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229 | ! and paste in the jtrash var |
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230 | ! At the end, ones need to replace the indexes on T grid |
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231 | ! RMQ : there is no float groups identification ! |
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232 | |
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233 | clname='init_float_ariane' |
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234 | |
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235 | nisobfl = 1 ! we assume that by default we want 3D advection |
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236 | |
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237 | ! we check that the number of floats in the init_file are consistant |
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238 | ! with the namelist |
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239 | IF( lwp ) THEN |
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240 | jfl1=0 |
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241 | OPEN( unit=inum, file=clname,status='old',access='sequential',form='formatted') |
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242 | DO WHILE (ierr .GE. 0) |
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243 | jfl1=jfl1+1 |
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244 | READ (inum,*, iostat=ierr) |
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245 | END DO |
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246 | CLOSE(inum) |
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247 | IF( (jfl1-1) .NE. jpnfl )THEN |
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248 | WRITE (numout,*) ' STOP the number of floats in' ,clname,' = ',jfl1 |
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249 | WRITE (numout,*) ' is not equal to jfl= ',jpnfl |
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250 | STOP |
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251 | ENDIF |
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252 | ENDIF |
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253 | |
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254 | ! we get the init values |
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255 | CALL ctl_opn( inum, clname, 'OLD', 'FORMATTED', 'SEQUENTIAL', & |
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256 | & 1, numout, .TRUE., 1 ) |
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257 | DO jfl = 1, jpnfl |
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258 | READ(inum,*) tpifl(jfl),tpjfl(jfl),tpkfl(jfl),jtrash, jtrash |
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259 | if(lwp)write(numout,*)"read : ",tpifl(jfl),tpjfl(jfl),tpkfl(jfl),jtrash, jtrash ; call flush(numout) |
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260 | |
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261 | IF ( tpkfl(jfl) .LT. 0. ) nisobfl(jfl) = 0 !set the 2D advection according to init_float |
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262 | ngrpfl(jfl)=jfl |
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263 | END DO |
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264 | |
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265 | ! conversion from ariane index to T grid index |
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266 | tpkfl = abs(tpkfl)-0.5 ! reversed vertical axis |
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267 | tpifl = tpifl+0.5 |
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268 | tpjfl = tpjfl+0.5 |
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269 | |
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270 | ! verif of non land point initialisation : no need if correct init |
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271 | |
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272 | ELSE |
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273 | IF(lwp) WRITE(numout,*) ' init_float read ' |
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274 | |
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275 | ! First initialisation of floats |
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276 | ! the initials positions of floats are written in a file |
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277 | ! with a variable to know if it is a isobar float a number |
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278 | ! to identified who want the trajectories of this float and |
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279 | ! an index for the number of the float |
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280 | ! open the init file |
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281 | CALL ctl_opn( inum, 'init_float', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
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282 | READ(inum,*) (flxx(jfl) , jfl=1, jpnfl), & |
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283 | (flyy(jfl) , jfl=1, jpnfl), & |
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284 | (flzz(jfl) , jfl=1, jpnfl), & |
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285 | (nisobfl(jfl), jfl=1, jpnfl), & |
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286 | (ngrpfl(jfl) , jfl=1, jpnfl) |
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287 | CLOSE(inum) |
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288 | |
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289 | ! Test to find the grid point coordonate with the geographical position |
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290 | DO jfl = 1, jpnfl |
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291 | ihtest(jfl) = 0 |
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292 | ivtest(jfl) = 0 |
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293 | ikmfl(jfl) = 0 |
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294 | # if defined key_mpp_mpi |
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295 | DO ji = MAX(nldi,2), nlei |
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296 | DO jj = MAX(nldj,2), nlej ! NO vector opt. |
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297 | # else |
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298 | DO ji = 2, jpi |
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299 | DO jj = 2, jpj ! NO vector opt. |
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300 | # endif |
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301 | ! for each float we find the indexes of the mesh |
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302 | |
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303 | CALL findmesh(glamf(ji-1,jj-1),gphif(ji-1,jj-1), & |
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304 | glamf(ji-1,jj ),gphif(ji-1,jj ), & |
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305 | glamf(ji ,jj ),gphif(ji ,jj ), & |
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306 | glamf(ji ,jj-1),gphif(ji ,jj-1), & |
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307 | flxx(jfl) ,flyy(jfl) , & |
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308 | glamt(ji ,jj ),gphit(ji ,jj ), llinmesh) |
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309 | IF(llinmesh) THEN |
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310 | iimfl(jfl) = ji |
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311 | ijmfl(jfl) = jj |
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312 | ihtest(jfl) = ihtest(jfl)+1 |
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313 | DO jk = 1, jpk-1 |
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314 | IF( (fsdepw(ji,jj,jk) <= flzz(jfl)) .AND. (fsdepw(ji,jj,jk+1) > flzz(jfl)) ) THEN |
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315 | ikmfl(jfl) = jk |
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316 | ivtest(jfl) = ivtest(jfl) + 1 |
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317 | ENDIF |
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318 | END DO |
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319 | ENDIF |
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320 | END DO |
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321 | END DO |
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322 | |
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323 | ! If the float is in a mesh computed by an other processor we put iimfl=ijmfl=-1 |
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324 | IF( ihtest(jfl) == 0 ) THEN |
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325 | iimfl(jfl) = -1 |
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326 | ijmfl(jfl) = -1 |
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327 | ENDIF |
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328 | END DO |
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329 | |
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330 | ! A zero in the sum of the arrays "ihtest" and "ivtest" |
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331 | IF( lk_mpp ) CALL mpp_sum(ihtest,jpnfl) ! sums over the global domain |
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332 | IF( lk_mpp ) CALL mpp_sum(ivtest,jpnfl) |
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333 | |
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334 | DO jfl = 1, jpnfl |
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335 | IF( (ihtest(jfl) > 1 ) .OR. ( ivtest(jfl) > 1 )) THEN |
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336 | IF(lwp) WRITE(numout,*) 'THE FLOAT',jfl,' IS NOT IN ONLY ONE MESH' |
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337 | ENDIF |
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338 | IF( ihtest(jfl) == 0 ) THEN |
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339 | IF(lwp) WRITE(numout,*)'THE FLOAT',jfl,' IS IN NO MESH' |
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340 | ENDIF |
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341 | END DO |
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342 | |
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343 | ! We compute the distance between the float and the face of the mesh |
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344 | DO jfl = 1, jpnfl |
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345 | ! Made only if the float is in the domain of the processor |
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346 | IF( (iimfl(jfl) >= 0 ) .AND. ( ijmfl(jfl) >= 0 ) ) THEN |
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347 | |
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348 | ! TEST TO KNOW IF THE FLOAT IS NOT INITIALISED IN THE COAST |
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349 | |
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350 | idomfl(jfl) = 0 |
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351 | IF( tmask(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)) == 0. ) idomfl(jfl)=1 |
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352 | |
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353 | ! Computation of the distance between the float |
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354 | ! and the faces of the mesh |
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355 | ! zdxab |
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356 | ! . |
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357 | ! B----.---------C |
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358 | ! | . | |
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359 | ! |<------>flo | |
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360 | ! | ^ | |
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361 | ! | |.....|....zdyad |
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362 | ! | | | |
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363 | ! A--------|-----D |
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364 | |
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365 | zdxab = dstnce(flxx(jfl),flyy(jfl),glamf(iimfl(jfl)-1,ijmfl(jfl)-1),flyy(jfl)) |
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366 | zdyad = dstnce(flxx(jfl),flyy(jfl),flxx(jfl),gphif(iimfl(jfl)-1,ijmfl(jfl)-1)) |
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367 | |
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368 | ! Translation of this distances (in meter) in indexes |
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369 | |
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370 | tpifl(jfl) = (iimfl(jfl)-0.5)+zdxab/ e1u(iimfl(jfl)-1,ijmfl(jfl))+(mig(1)-jpizoom) |
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371 | tpjfl(jfl) = (ijmfl(jfl)-0.5)+zdyad/ e2v(iimfl(jfl),ijmfl(jfl)-1)+(mjg(1)-jpjzoom) |
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372 | tpkfl(jfl) = (fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)+1) - flzz(jfl))*(ikmfl(jfl)) & |
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373 | / (fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)+1) - fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl))) & |
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374 | + (flzz(jfl) - fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)))*(ikmfl(jfl)+1) & |
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375 | / (fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)+1) - fsdepw(iimfl(jfl),ijmfl(jfl),ikmfl(jfl))) |
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376 | ELSE |
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377 | tpifl (jfl) = 0.e0 |
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378 | tpjfl (jfl) = 0.e0 |
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379 | tpkfl (jfl) = 0.e0 |
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380 | idomfl(jfl) = 0 |
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381 | ENDIF |
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382 | END DO |
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383 | |
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384 | ! The sum of all the arrays tpifl, tpjfl, tpkfl give 3 arrays with the positions of all the floats. |
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385 | IF( lk_mpp ) CALL mpp_sum( tpifl , jpnfl ) ! sums over the global domain |
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386 | IF( lk_mpp ) CALL mpp_sum( tpjfl , jpnfl ) |
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387 | IF( lk_mpp ) CALL mpp_sum( tpkfl , jpnfl ) |
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388 | IF( lk_mpp ) CALL mpp_sum( idomfl, jpnfl ) |
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389 | ENDIF |
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390 | |
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391 | ENDIF |
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392 | |
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393 | ! Print the initial positions of the floats |
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394 | IF( .NOT. ln_rstflo ) THEN |
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395 | ! WARNING : initial position not in the sea |
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396 | DO jfl = 1, jpnfl |
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397 | IF( idomfl(jfl) == 1 ) THEN |
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398 | IF(lwp) WRITE(numout,*)'*****************************' |
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399 | IF(lwp) WRITE(numout,*)'!!!!!!! WARNING !!!!!!!!!!' |
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400 | IF(lwp) WRITE(numout,*)'*****************************' |
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401 | IF(lwp) WRITE(numout,*)'The float number',jfl,'is out of the sea.' |
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402 | IF(lwp) WRITE(numout,*)'geographical position',flxx(jfl),flyy(jfl),flzz(jfl) |
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403 | IF(lwp) WRITE(numout,*)'index position',tpifl(jfl),tpjfl(jfl),tpkfl(jfl) |
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404 | ENDIF |
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405 | END DO |
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406 | ENDIF |
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407 | |
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408 | END SUBROUTINE flo_dom |
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409 | |
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410 | |
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411 | SUBROUTINE findmesh( pax, pay, pbx, pby, & |
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412 | pcx, pcy, pdx, pdy, & |
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413 | px ,py ,ptx, pty, ldinmesh ) |
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414 | !! ------------------------------------------------------------- |
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415 | !! *** ROUTINE findmesh *** |
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416 | !! |
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417 | !! ** Purpose : Find the index of mesh for the point spx spy |
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418 | !! |
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419 | !! ** Method : |
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420 | !!---------------------------------------------------------------------- |
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421 | REAL(wp) :: & |
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422 | pax, pay, pbx, pby, & ! ??? |
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423 | pcx, pcy, pdx, pdy, & ! ??? |
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424 | px, py, & ! longitude and latitude |
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425 | ptx, pty ! ??? |
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426 | LOGICAL :: ldinmesh ! ??? |
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427 | !! |
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428 | REAL(wp) :: zabt, zbct, zcdt, zdat, zabpt, zbcpt, zcdpt, zdapt |
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429 | !!--------------------------------------------------------------------- |
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430 | !! Statement function |
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431 | REAL(wp) :: fsline |
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432 | REAL(wp) :: psax, psay, psbx, psby, psx, psy |
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433 | fsline( psax, psay, psbx, psby, psx, psy ) = psy * ( psbx - psax ) & |
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434 | & - psx * ( psby - psay ) & |
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435 | & + psax * psby - psay * psbx |
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436 | !!--------------------------------------------------------------------- |
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437 | |
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438 | ! 4 semi plane defined by the 4 points and including the T point |
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439 | zabt = fsline(pax,pay,pbx,pby,ptx,pty) |
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440 | zbct = fsline(pbx,pby,pcx,pcy,ptx,pty) |
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441 | zcdt = fsline(pcx,pcy,pdx,pdy,ptx,pty) |
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442 | zdat = fsline(pdx,pdy,pax,pay,ptx,pty) |
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443 | |
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444 | ! 4 semi plane defined by the 4 points and including the extrememity |
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445 | zabpt = fsline(pax,pay,pbx,pby,px,py) |
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446 | zbcpt = fsline(pbx,pby,pcx,pcy,px,py) |
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447 | zcdpt = fsline(pcx,pcy,pdx,pdy,px,py) |
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448 | zdapt = fsline(pdx,pdy,pax,pay,px,py) |
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449 | |
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450 | ! We compare the semi plane T with the semi plane including the point |
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451 | ! to know if it is in this mesh. |
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452 | ! For numerical reasons it is possible that for a point which is on |
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453 | ! the line we don't have exactly zero with fsline function. We want |
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454 | ! that a point can't be in 2 mesh in the same time, so we put the |
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455 | ! coefficient to zero if it is smaller than 1.E-12 |
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456 | |
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457 | IF( ABS(zabpt) <= 1.E-12 ) zabpt = 0. |
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458 | IF( ABS(zbcpt) <= 1.E-12 ) zbcpt = 0. |
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459 | IF( ABS(zcdpt) <= 1.E-12 ) zcdpt = 0. |
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460 | IF( ABS(zdapt) <= 1.E-12 ) zdapt = 0. |
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461 | IF( (zabt*zabpt > 0.) .AND. (zbct*zbcpt >= 0. ) .AND. ( zcdt*zcdpt >= 0. ) .AND. ( zdat*zdapt > 0. ) & |
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462 | .AND. ( px <= MAX(pcx,pdx) ) .AND. ( px >= MIN(pax,pbx) ) & |
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463 | .AND. ( py <= MAX(pby,pcy) ) .AND. ( py >= MIN(pay,pdy) ) ) THEN |
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464 | ldinmesh=.TRUE. |
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465 | ELSE |
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466 | ldinmesh=.FALSE. |
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467 | ENDIF |
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468 | ! |
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469 | END SUBROUTINE findmesh |
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470 | |
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471 | |
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472 | FUNCTION dstnce( pla1, phi1, pla2, phi2 ) |
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473 | !! ------------------------------------------------------------- |
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474 | !! *** Function dstnce *** |
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475 | !! |
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476 | !! ** Purpose : returns distance (in m) between two geographical |
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477 | !! points |
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478 | !! ** Method : |
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479 | !!---------------------------------------------------------------------- |
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480 | REAL(wp), INTENT(in) :: pla1, phi1, pla2, phi2 ! ??? |
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481 | !! |
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482 | REAL(wp) :: dly1, dly2, dlx1, dlx2, dlx, dls, dld, dpi |
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483 | REAL(wp) :: dstnce |
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484 | !!--------------------------------------------------------------------- |
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485 | ! |
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486 | dpi = 2.* ASIN(1.) |
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487 | dls = dpi / 180. |
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488 | dly1 = phi1 * dls |
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489 | dly2 = phi2 * dls |
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490 | dlx1 = pla1 * dls |
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491 | dlx2 = pla2 * dls |
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492 | ! |
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493 | dlx = SIN(dly1) * SIN(dly2) + COS(dly1) * COS(dly2) * COS(dlx2-dlx1) |
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494 | ! |
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495 | IF( ABS(dlx) > 1.0 ) dlx = 1.0 |
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496 | ! |
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497 | dld = ATAN(DSQRT( ( 1-dlx )/( 1+dlx ) )) * 222.24 / dls |
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498 | dstnce = dld * 1000. |
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499 | ! |
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500 | END FUNCTION dstnce |
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501 | |
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502 | # else |
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503 | !!---------------------------------------------------------------------- |
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504 | !! Default option Empty module |
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505 | !!---------------------------------------------------------------------- |
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506 | CONTAINS |
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507 | SUBROUTINE flo_dom ! Empty routine |
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508 | END SUBROUTINE flo_dom |
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509 | #endif |
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510 | |
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511 | !!====================================================================== |
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512 | END MODULE flodom |
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