[3] | 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 | #if defined key_floats || defined key_esopa |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! 'key_floats' float trajectories |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! flo_dom : initialization of floats |
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| 11 | !! findmesh : compute index of position |
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| 12 | !! dstnce : compute distance between face mesh and floats |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! * Modules used |
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| 15 | USE flo_oce ! ocean drifting floats |
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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 lib_mpp ! distribued memory computing library |
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| 19 | |
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| 20 | IMPLICIT NONE |
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| 21 | |
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| 22 | !! * Accessibility |
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| 23 | PRIVATE dstnce |
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| 24 | PUBLIC flo_dom ! routine called by floats.F90 |
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| 25 | |
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| 26 | !! * Substitutions |
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| 27 | # include "domzgr_substitute.h90" |
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| 28 | !!---------------------------------------------------------------------- |
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| 29 | !! OPA 9.0 , LODYC-IPSL (2003) |
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| 30 | !!---------------------------------------------------------------------- |
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| 31 | |
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| 32 | CONTAINS |
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| 33 | |
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| 34 | SUBROUTINE flo_dom |
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| 35 | !! --------------------------------------------------------------------- |
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| 36 | !! *** ROUTINE flo_dom *** |
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| 37 | !! |
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| 38 | !! ** Purpose : Initialisation of floats |
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| 39 | !! |
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| 40 | !! ** Method : We put the floats in the domain with the latitude, |
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| 41 | !! the longitude (degree) and the depth (m). |
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| 42 | !! |
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| 43 | !!---------------------------------------------------------------------- |
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| 44 | !! * Local declarations |
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| 45 | LOGICAL :: llinmesh |
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| 46 | CHARACTER (len=21) :: clname |
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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 = 11 ! logical unit for file read |
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| 50 | INTEGER , DIMENSION ( jpnfl ) :: & |
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| 51 | iimfl, ijmfl, ikmfl, & ! index mesh of floats |
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| 52 | idomfl, ivtest, ihtest |
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| 53 | REAL(wp) :: zdxab,zdyad |
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| 54 | REAL(wp) , DIMENSION ( jpnnewfl ) :: zgifl, zgjfl, zgkfl |
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| 55 | !!--------------------------------------------------------------------- |
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| 56 | |
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| 57 | ! Initialisation with the geographical position or restart |
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| 58 | |
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| 59 | IF(lwp) WRITE(numout,*) 'flo_dom : compute initial position of floats' |
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| 60 | IF(lwp) WRITE(numout,*) '~~~~~~~~' |
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| 61 | IF(lwp) WRITE(numout,*) ' jpnfl = ',jpnfl |
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| 62 | |
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| 63 | IF(ln_rstarfl) THEN |
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| 64 | IF(lwp) WRITE(numout,*) ' float restart file read' |
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| 65 | |
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| 66 | ! open the restart file |
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| 67 | clname='restart_float' |
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| 68 | OPEN (inum,FILE=clname,FORM='UNFORMATTED') |
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| 69 | REWIND inum |
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| 70 | |
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| 71 | ! read of the restart file |
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| 72 | READ(inum) ( tpifl (jfl), jfl=1, jpnrstarfl), & |
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| 73 | ( tpjfl (jfl), jfl=1, jpnrstarfl), & |
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| 74 | ( tpkfl (jfl), jfl=1, jpnrstarfl), & |
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| 75 | ( nisobfl(jfl), jfl=1, jpnrstarfl), & |
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| 76 | ( ngrpfl (jfl), jfl=1, jpnrstarfl) |
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| 77 | CLOSE(inum) |
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| 78 | |
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| 79 | ! if we want a surface drift ( like PROVOR floats ) |
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| 80 | IF( ln_argo ) THEN |
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| 81 | DO jfl = 1, jpnrstarfl |
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| 82 | nisobfl(jfl) = 0 |
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| 83 | END DO |
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| 84 | ENDIF |
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| 85 | |
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| 86 | IF(lwp) WRITE(numout,*)' flo_dom: END of florstlec' |
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| 87 | |
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| 88 | ! It is possible to add new floats. |
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| 89 | IF(lwp) WRITE(numout,*)' flo_dom:jpnfl jpnrstarfl ',jpnfl,jpnrstarfl |
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| 90 | IF( jpnfl > jpnrstarfl ) THEN |
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| 91 | ! open the init file |
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| 92 | clname='init_float' |
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| 93 | OPEN(inum,FILE=clname,FORM='FORMATTED') |
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| 94 | DO jfl = jpnrstarfl+1, jpnfl |
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| 95 | READ(inum,*) flxx(jfl),flyy(jfl),flzz(jfl), nisobfl(jfl),ngrpfl(jfl),jfl1 |
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| 96 | END DO |
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| 97 | CLOSE(inum) |
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| 98 | IF(lwp) WRITE(numout,*)' flodom: END reading init_float file' |
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| 99 | |
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| 100 | ! Test to find the grid point coordonate with the geographical position |
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| 101 | DO jfl = jpnrstarfl+1, jpnfl |
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| 102 | ihtest(jfl) = 0 |
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| 103 | ivtest(jfl) = 0 |
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| 104 | ikmfl(jfl) = 0 |
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| 105 | # if defined key_mpp |
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| 106 | DO ji = MAX(nldi,2), nlei |
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| 107 | DO jj = MAX(nldj,2), nlej |
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| 108 | # else |
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| 109 | DO ji = 2, jpi |
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| 110 | DO jj = 2, jpj |
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| 111 | # endif |
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| 112 | ! For each float we find the indexes of the mesh |
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| 113 | CALL findmesh(glamf(ji-1,jj-1),gphif(ji-1,jj-1), & |
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| 114 | glamf(ji-1,jj ),gphif(ji-1,jj ), & |
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| 115 | glamf(ji ,jj ),gphif(ji ,jj ), & |
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| 116 | glamf(ji ,jj-1),gphif(ji ,jj-1), & |
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| 117 | flxx(jfl) ,flyy(jfl) , & |
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| 118 | glamt(ji ,jj ),gphit(ji ,jj ), llinmesh) |
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| 119 | IF(llinmesh) THEN |
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| 120 | iimfl(jfl) = ji |
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| 121 | ijmfl(jfl) = jj |
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| 122 | ihtest(jfl) = ihtest(jfl)+1 |
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| 123 | DO jk = 1, jpk-1 |
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| 124 | IF( (fsdepw(ji,jj,jk) <= flzz(jfl)) .AND. (fsdepw(ji,jj,jk+1) > flzz(jfl)) ) THEN |
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| 125 | ikmfl(jfl) = jk |
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| 126 | ivtest(jfl) = ivtest(jfl) + 1 |
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| 127 | ENDIF |
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| 128 | END DO |
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| 129 | ENDIF |
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| 130 | END DO |
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| 131 | END DO |
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| 132 | IF(lwp) WRITE(numout,*)' flo_dom: END findmesh' |
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| 133 | |
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| 134 | ! If the float is in a mesh computed by an other processor we put iimfl=ijmfl=-1 |
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| 135 | IF( ihtest(jfl) == 0 ) THEN |
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| 136 | iimfl(jfl) = -1 |
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| 137 | ijmfl(jfl) = -1 |
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| 138 | ENDIF |
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| 139 | END DO |
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| 140 | |
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| 141 | ! A zero in the sum of the arrays "ihtest" and "ivtest" |
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| 142 | # if defined key_mpp |
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| 143 | CALL mpp_sum(ihtest,jpnfl,iwork) |
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| 144 | CALL mpp_sum(ivtest,jpnfl,iwork) |
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| 145 | # endif |
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| 146 | DO jfl = jpnrstarfl+1, jpnfl |
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| 147 | IF( (ihtest(jfl) > 1 ) .OR. ( ivtest(jfl) > 1) ) THEN |
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| 148 | IF(lwp) WRITE(numout,*) 'THE FLOAT',jfl,' IS NOT IN ONLY ONE MESH' |
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| 149 | STOP |
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| 150 | ENDIF |
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| 151 | IF( (ihtest(jfl) == 0) ) THEN |
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| 152 | IF(lwp) WRITE(numout,*)'THE FLOAT',jfl,' IS IN NO MESH' |
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| 153 | STOP |
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| 154 | ENDIF |
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| 155 | END DO |
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| 156 | |
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| 157 | ! We compute the distance between the float and the face of the mesh |
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| 158 | DO jfl = jpnrstarfl+1, jpnfl |
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| 159 | ! Made only if the float is in the domain of the processor |
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| 160 | IF( (iimfl(jfl) >= 0) .AND. (ijmfl(jfl) >= 0) ) THEN |
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| 161 | |
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| 162 | ! TEST TO KNOW IF THE FLOAT IS NOT INITIALISED IN THE COAST |
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| 163 | |
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| 164 | idomfl(jfl) = 0 |
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| 165 | IF( tmask(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)) == 0. ) idomfl(jfl) = 1 |
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| 166 | |
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| 167 | ! Computation of the distance between the float and the faces of the mesh |
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| 168 | ! zdxab |
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| 169 | ! . |
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| 170 | ! B----.---------C |
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| 171 | ! | . | |
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| 172 | ! |<------>flo | |
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| 173 | ! | ^ | |
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| 174 | ! | |.....|....zdyad |
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| 175 | ! | | | |
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| 176 | ! A--------|-----D |
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| 177 | ! |
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| 178 | |
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| 179 | zdxab = dstnce(flxx(jfl),flyy(jfl),glamf(iimfl(jfl)-1,ijmfl(jfl)-1),flyy(jfl)) |
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| 180 | zdyad = dstnce(flxx(jfl),flyy(jfl),flxx(jfl),gphif(iimfl(jfl)-1,ijmfl(jfl)-1)) |
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| 181 | |
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| 182 | ! Translation of this distances (in meter) in indexes |
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| 183 | |
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| 184 | zgifl(jfl-jpnrstarfl)= (iimfl(jfl)-0.5) + zdxab/e1u(iimfl(jfl)-1,ijmfl(jfl)) + (mig(1)-jpizoom) |
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| 185 | zgjfl(jfl-jpnrstarfl)= (ijmfl(jfl)-0.5) + zdyad/e2v(iimfl(jfl),ijmfl(jfl)-1) + (mjg(1)-jpjzoom) |
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| 186 | zgkfl(jfl-jpnrstarfl) = (( fsdepw(ji,jj,ikmfl(jfl)+1) - flzz(jfl) )* ikmfl(jfl)) & |
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| 187 | / ( fsdepw(ji,jj,ikmfl(jfl)+1) - fsdepw(ji,jj,ikmfl(jfl) ) ) & |
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| 188 | + (( flzz(jfl)-fsdepw(ji,jj,ikmfl(jfl)) ) *(ikmfl(jfl)+1)) & |
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| 189 | / ( fsdepw(ji,jj,ikmfl(jfl)+1) - fsdepw(ji,jj,ikmfl(jfl)) ) |
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| 190 | ELSE |
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| 191 | zgifl(jfl-jpnrstarfl) = 0. |
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| 192 | zgjfl(jfl-jpnrstarfl) = 0. |
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| 193 | zgkfl(jfl-jpnrstarfl) = 0. |
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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 defined key_mpp |
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| 199 | |
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| 200 | CALL mpp_sum( zgjfl, jpnnewfl ) |
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| 201 | CALL mpp_sum( zgkfl, jpnnewfl ) |
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| 202 | IF(lwp) WRITE(numout,*) (zgifl(jfl),jfl=1,jpnnewfl) |
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| 203 | IF(lwp) WRITE(numout,*) (zgjfl(jfl),jfl=1,jpnnewfl) |
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| 204 | IF(lwp) WRITE(numout,*) (zgkfl(jfl),jfl=1,jpnnewfl) |
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| 205 | # endif |
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| 206 | |
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| 207 | DO jfl = jpnrstarfl+1, jpnfl |
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| 208 | tpifl(jfl) = zgifl(jfl-jpnrstarfl) |
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| 209 | tpjfl(jfl) = zgjfl(jfl-jpnrstarfl) |
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| 210 | tpkfl(jfl) = zgkfl(jfl-jpnrstarfl) |
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| 211 | END DO |
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| 212 | ENDIF |
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| 213 | ELSE |
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| 214 | IF(lwp) WRITE(numout,*) ' init_float read ' |
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| 215 | |
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| 216 | ! First initialisation of floats |
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| 217 | ! the initials positions of floats are written in a file |
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| 218 | ! with a variable to know if it is a isobar float a number |
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| 219 | ! to identified who want the trajectories of this float and |
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| 220 | ! an index for the number of the float |
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| 221 | ! open the init file |
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| 222 | clname='init_float' |
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| 223 | OPEN(inum,FILE=clname,FORM='FORMATTED') |
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| 224 | READ(inum) (flxx(jfl) , jfl=1, jpnfl), & |
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| 225 | (flyy(jfl) , jfl=1, jpnfl), & |
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| 226 | (flzz(jfl) , jfl=1, jpnfl), & |
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| 227 | (nisobfl(jfl), jfl=1, jpnfl), & |
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| 228 | (ngrpfl(jfl) , jfl=1, jpnfl) |
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| 229 | CLOSE(inum) |
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| 230 | |
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| 231 | ! Test to find the grid point coordonate with the geographical position |
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| 232 | DO jfl = 1, jpnfl |
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| 233 | ihtest(jfl) = 0 |
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| 234 | ivtest(jfl) = 0 |
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| 235 | ikmfl(jfl) = 0 |
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| 236 | # if defined key_mpp |
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| 237 | DO ji = MAX(nldi,2), nlei |
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| 238 | DO jj = MAX(nldj,2), nlej |
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| 239 | # else |
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| 240 | DO ji = 2, jpi |
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| 241 | DO jj = 2, jpj |
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| 242 | # endif |
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| 243 | ! for each float we find the indexes of the mesh |
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| 244 | |
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| 245 | CALL findmesh(glamf(ji-1,jj-1),gphif(ji-1,jj-1), & |
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| 246 | glamf(ji-1,jj ),gphif(ji-1,jj ), & |
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| 247 | glamf(ji ,jj ),gphif(ji ,jj ), & |
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| 248 | glamf(ji ,jj-1),gphif(ji ,jj-1), & |
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| 249 | flxx(jfl) ,flyy(jfl) , & |
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| 250 | glamt(ji ,jj ),gphit(ji ,jj ), llinmesh) |
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| 251 | IF(llinmesh) THEN |
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| 252 | iimfl(jfl) = ji |
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| 253 | ijmfl(jfl) = jj |
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| 254 | ihtest(jfl) = ihtest(jfl)+1 |
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| 255 | DO jk = 1, jpk-1 |
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| 256 | IF( (fsdepw(ji,jj,jk) <= flzz(jfl)) .AND. (fsdepw(ji,jj,jk+1) > flzz(jfl)) ) THEN |
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| 257 | ikmfl(jfl) = jk |
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| 258 | ivtest(jfl) = ivtest(jfl) + 1 |
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| 259 | ENDIF |
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| 260 | END DO |
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| 261 | ENDIF |
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| 262 | END DO |
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| 263 | END DO |
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| 264 | |
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| 265 | ! If the float is in a mesh computed by an other processor we put iimfl=ijmfl=-1 |
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| 266 | IF( ihtest(jfl) == 0 ) THEN |
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| 267 | iimfl(jfl) = -1 |
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| 268 | ijmfl(jfl) = -1 |
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| 269 | ENDIF |
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| 270 | END DO |
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| 271 | |
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| 272 | ! A zero in the sum of the arrays "ihtest" and "ivtest" |
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| 273 | # if defined key_mpp |
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| 274 | CALL mpp_sum(ihtest,jpnfl,iwork) |
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| 275 | CALL mpp_sum(ivtest,jpnfl,iwork) |
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| 276 | # endif |
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| 277 | |
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| 278 | DO jfl = 1, jpnfl |
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| 279 | IF( (ihtest(jfl) > 1 ) .OR. ( ivtest(jfl) > 1 )) THEN |
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| 280 | IF(lwp) WRITE(numout,*) 'THE FLOAT',jfl,' IS NOT IN ONLY ONE MESH' |
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| 281 | ENDIF |
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| 282 | IF( ihtest(jfl) == 0 ) THEN |
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| 283 | IF(lwp) WRITE(numout,*)'THE FLOAT',jfl,' IS IN NO MESH' |
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| 284 | ENDIF |
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| 285 | END DO |
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| 286 | |
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| 287 | ! We compute the distance between the float and the face of the mesh |
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| 288 | DO jfl = 1, jpnfl |
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| 289 | ! Made only if the float is in the domain of the processor |
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| 290 | IF( (iimfl(jfl) >= 0 ) .AND. ( ijmfl(jfl) >= 0 ) ) THEN |
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| 291 | |
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| 292 | ! TEST TO KNOW IF THE FLOAT IS NOT INITIALISED IN THE COAST |
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| 293 | |
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| 294 | idomfl(jfl) = 0 |
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| 295 | IF( tmask(iimfl(jfl),ijmfl(jfl),ikmfl(jfl)) == 0. ) idomfl(jfl)=1 |
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| 296 | |
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| 297 | ! Computation of the distance between the float |
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| 298 | ! and the faces of the mesh |
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| 299 | ! zdxab |
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| 300 | ! . |
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| 301 | ! B----.---------C |
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| 302 | ! | . | |
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| 303 | ! |<------>flo | |
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| 304 | ! | ^ | |
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| 305 | ! | |.....|....zdyad |
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| 306 | ! | | | |
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| 307 | ! A--------|-----D |
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| 308 | |
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| 309 | zdxab = dstnce(flxx(jfl),flyy(jfl),glamf(iimfl(jfl)-1,ijmfl(jfl)-1),flyy(jfl)) |
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| 310 | zdyad = dstnce(flxx(jfl),flyy(jfl),flxx(jfl),gphif(iimfl(jfl)-1,ijmfl(jfl)-1)) |
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| 311 | |
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| 312 | ! Translation of this distances (in meter) in indexes |
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| 313 | |
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| 314 | tpifl(jfl) = (iimfl(jfl)-0.5)+zdxab/ e1u(iimfl(jfl)-1,ijmfl(jfl))+(mig(1)-jpizoom) |
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| 315 | tpjfl(jfl) = (ijmfl(jfl)-0.5)+zdyad/ e2v(iimfl(jfl),ijmfl(jfl)-1)+(mjg(1)-jpjzoom) |
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| 316 | tpkfl(jfl) = (fsdepw(ji,jj,ikmfl(jfl)+1) - flzz(jfl))*(ikmfl(jfl)) & |
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| 317 | / (fsdepw(ji,jj,ikmfl(jfl)+1) - fsdepw(ji,jj,ikmfl(jfl))) & |
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| 318 | + (flzz(jfl) - fsdepw(ji,jj,ikmfl(jfl)))*(ikmfl(jfl)+1) & |
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| 319 | / (fsdepw(ji,jj,ikmfl(jfl)+1) - fsdepw(ji,jj,ikmfl(jfl))) |
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| 320 | ELSE |
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| 321 | tpifl (jfl) = 0.e0 |
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| 322 | tpjfl (jfl) = 0.e0 |
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| 323 | tpkfl (jfl) = 0.e0 |
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| 324 | idomfl(jfl) = 0 |
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| 325 | ENDIF |
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| 326 | END DO |
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| 327 | |
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| 328 | ! The sum of all the arrays tpifl, tpjfl, tpkfl give 3 arrays with the positions of all the floats. |
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| 329 | # if defined key_mpp |
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| 330 | CALL mpp_sum( tpifl , jpnfl ) |
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| 331 | CALL mpp_sum( tpjfl , jpnfl ) |
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| 332 | CALL mpp_sum( tpkfl , jpnfl ) |
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| 333 | CALL mpp_sum( idomfl, jpnfl ) |
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| 334 | # endif |
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| 335 | ENDIF |
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| 336 | |
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| 337 | ! Print the initial positions of the floats |
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| 338 | IF( .NOT. ln_rstarfl ) THEN |
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| 339 | ! WARNING : initial position not in the sea |
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| 340 | DO jfl = 1, jpnfl |
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| 341 | IF( idomfl(jfl) == 1 ) THEN |
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| 342 | IF(lwp) WRITE(numout,*)'*****************************' |
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| 343 | IF(lwp) WRITE(numout,*)'!!!!!!! WARNING !!!!!!!!!!' |
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| 344 | IF(lwp) WRITE(numout,*)'*****************************' |
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| 345 | IF(lwp) WRITE(numout,*)'The float number',jfl,'is out of the sea.' |
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| 346 | IF(lwp) WRITE(numout,*)'geographical position',flxx(jfl),flyy(jfl),flzz(jfl) |
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| 347 | IF(lwp) WRITE(numout,*)'index position',tpifl(jfl),tpjfl(jfl),tpkfl(jfl) |
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| 348 | ENDIF |
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| 349 | END DO |
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| 350 | ENDIF |
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| 351 | |
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| 352 | END SUBROUTINE flo_dom |
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| 353 | |
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| 354 | |
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| 355 | SUBROUTINE findmesh( pax, pay, pbx, pby, & |
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| 356 | pcx, pcy, pdx, pdy, & |
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| 357 | px ,py ,ptx, pty, ldinmesh ) |
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| 358 | !! ------------------------------------------------------------- |
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| 359 | !! *** ROUTINE findmesh *** |
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| 360 | !! |
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| 361 | !! ** Purpose : Find the index of mesh for the point spx spy |
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| 362 | !! |
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| 363 | !! ** Method : |
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| 364 | !! |
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| 365 | !! History : |
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| 366 | !! 8.0 ! 98-07 (Y.Drillet) Original code |
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| 367 | !!---------------------------------------------------------------------- |
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| 368 | !! * Arguments |
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| 369 | REAL(wp) :: & |
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| 370 | pax, pay, pbx, pby, & ! ??? |
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| 371 | pcx, pcy, pdx, pdy, & ! ??? |
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| 372 | px, py, & ! longitude and latitude |
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| 373 | ptx, pty ! ??? |
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| 374 | LOGICAL :: ldinmesh ! ??? |
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| 375 | |
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| 376 | !! * local declarations |
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| 377 | REAL(wp) :: & |
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| 378 | zabt, zbct, zcdt, zdat, zabpt, zbcpt, zcdpt, zdapt, & |
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| 379 | psax,psay,psbx,psby,psx,psy |
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| 380 | REAL(wp) :: fsline ! Statement function |
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| 381 | |
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| 382 | !! * Substitutions |
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| 383 | fsline(psax, psay, psbx, psby, psx, psy) = psy * ( psbx - psax ) & |
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| 384 | - psx * ( psby - psay ) & |
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| 385 | + psax * psby - psay * psbx |
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| 386 | !!--------------------------------------------------------------------- |
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| 387 | |
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| 388 | ! 4 semi plane defined by the 4 points and including the T point |
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| 389 | zabt = fsline(pax,pay,pbx,pby,ptx,pty) |
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| 390 | zbct = fsline(pbx,pby,pcx,pcy,ptx,pty) |
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| 391 | zcdt = fsline(pcx,pcy,pdx,pdy,ptx,pty) |
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| 392 | zdat = fsline(pdx,pdy,pax,pay,ptx,pty) |
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| 393 | |
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| 394 | ! 4 semi plane defined by the 4 points and including the extrememity |
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| 395 | zabpt = fsline(pax,pay,pbx,pby,px,py) |
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| 396 | zbcpt = fsline(pbx,pby,pcx,pcy,px,py) |
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| 397 | zcdpt = fsline(pcx,pcy,pdx,pdy,px,py) |
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| 398 | zdapt = fsline(pdx,pdy,pax,pay,px,py) |
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| 399 | |
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| 400 | ! We compare the semi plane T with the semi plane including the point |
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| 401 | ! to know if it is in this mesh. |
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| 402 | ! For numerical reasons it is possible that for a point which is on |
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| 403 | ! the line we don't have exactly zero with fsline function. We want |
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| 404 | ! that a point can't be in 2 mesh in the same time, so we put the |
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| 405 | ! coefficient to zero if it is smaller than 1.E-12 |
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| 406 | |
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| 407 | IF( ABS(zabpt) <= 1.E-12 ) zabpt = 0. |
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| 408 | IF( ABS(zbcpt) <= 1.E-12 ) zbcpt = 0. |
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| 409 | IF( ABS(zcdpt) <= 1.E-12 ) zcdpt = 0. |
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| 410 | IF( ABS(zdapt) <= 1.E-12 ) zdapt = 0. |
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| 411 | IF( (zabt*zabpt > 0.) .AND. (zbct*zbcpt >= 0. ) .AND. ( zcdt*zcdpt >= 0. ) .AND. ( zdat*zdapt > 0. ) & |
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| 412 | .AND. ( px <= MAX(pcx,pdx) ) .AND. ( px >= MIN(pax,pbx) ) & |
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| 413 | .AND. ( py <= MAX(pby,pcy) ) .AND. ( py >= MIN(pay,pdy) ) ) THEN |
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| 414 | ldinmesh=.TRUE. |
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| 415 | ELSE |
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| 416 | ldinmesh=.FALSE. |
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| 417 | ENDIF |
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| 418 | |
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| 419 | END SUBROUTINE findmesh |
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| 420 | |
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| 421 | |
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| 422 | FUNCTION dstnce( pla1, phi1, pla2, phi2 ) |
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| 423 | !! ------------------------------------------------------------- |
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| 424 | !! *** Function dstnce *** |
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| 425 | !! |
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| 426 | !! ** Purpose : returns distance (in m) between two geographical |
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| 427 | !! points |
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| 428 | !! ** Method : |
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| 429 | !! |
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| 430 | !!---------------------------------------------------------------------- |
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| 431 | !! * Arguments |
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| 432 | REAL(wp), INTENT(in) :: pla1, phi1, pla2, phi2 ! ??? |
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| 433 | |
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| 434 | !! * Local variables |
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| 435 | REAL(wp) :: dly1, dly2, dlx1, dlx2, dlx, dls, dld, dpi |
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| 436 | REAL(wp) :: dstnce |
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| 437 | !!--------------------------------------------------------------------- |
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| 438 | |
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| 439 | dpi = 2.* ASIN(1.) |
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| 440 | dls = dpi / 180. |
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| 441 | dly1 = phi1 * dls |
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| 442 | dly2 = phi2 * dls |
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| 443 | dlx1 = pla1 * dls |
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| 444 | dlx2 = pla2 * dls |
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| 445 | |
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| 446 | dlx = SIN(dly1) * SIN(dly2) + COS(dly1) * COS(dly2) * COS(dlx2-dlx1) |
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| 447 | |
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| 448 | IF( ABS(dlx) > 1.0 ) dlx = 1.0 |
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| 449 | |
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| 450 | dld = ATAN(DSQRT( ( 1-dlx )/( 1+dlx ) )) * 222.24 / dls |
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| 451 | dstnce = dld * 1000. |
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| 452 | |
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| 453 | END FUNCTION dstnce |
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| 454 | |
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| 455 | # else |
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| 456 | !!---------------------------------------------------------------------- |
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| 457 | !! Default option Empty module |
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| 458 | !!---------------------------------------------------------------------- |
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| 459 | CONTAINS |
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| 460 | SUBROUTINE flo_dom ! Empty routine |
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| 461 | END SUBROUTINE flo_dom |
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| 462 | #endif |
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| 463 | |
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| 464 | !!====================================================================== |
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| 465 | END MODULE flodom |
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