[2093] | 1 | MODULE geo2ocean |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE geo2ocean *** |
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| 4 | !! Ocean mesh : ??? |
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| 5 | !!====================================================================== |
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| 6 | !! History : OPA ! 07-1996 (O. Marti) Original code |
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| 7 | !! NEMO 1.0 ! 02-2008 (G. Madec) F90: Free form |
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| 8 | !! 3.0 ! |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | !! repcmo : |
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| 13 | !! angle : |
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| 14 | !! geo2oce : |
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| 15 | !! repere : old routine suppress it ??? |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE dom_oce ! mesh and scale factors |
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| 18 | USE phycst ! physical constants |
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| 19 | USE in_out_manager ! I/O manager |
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| 20 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 21 | USE lib_mpp ! MPP library |
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| 22 | |
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| 23 | IMPLICIT NONE |
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| 24 | PRIVATE |
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| 25 | |
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| 26 | PUBLIC rot_rep, repcmo, repere, geo2oce, oce2geo ! only rot_rep should be used |
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| 27 | ! repcmo and repere are keep only for compatibility. |
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| 28 | ! they are only a useless overlay of rot_rep |
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| 29 | |
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| 30 | PUBLIC obs_rot |
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| 31 | |
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| 32 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: & |
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| 33 | gsint, gcost, & ! cos/sin between model grid lines and NP direction at T point |
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| 34 | gsinu, gcosu, & ! cos/sin between model grid lines and NP direction at U point |
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| 35 | gsinv, gcosv, & ! cos/sin between model grid lines and NP direction at V point |
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| 36 | gsinf, gcosf ! cos/sin between model grid lines and NP direction at F point |
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| 37 | |
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| 38 | LOGICAL , SAVE, DIMENSION(4) :: linit = .FALSE. |
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| 39 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: gsinlon, gcoslon, gsinlat, gcoslat |
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| 40 | |
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| 41 | LOGICAL :: lmust_init = .TRUE. !: used to initialize the cos/sin variables (se above) |
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| 42 | |
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| 43 | !! * Substitutions |
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| 44 | # include "vectopt_loop_substitute.h90" |
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| 45 | !!---------------------------------------------------------------------- |
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| 46 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 47 | !! $Id: geo2ocean.F90 2715 2011-03-30 15:58:35Z rblod $ |
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| 48 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 49 | !!---------------------------------------------------------------------- |
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| 50 | CONTAINS |
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| 51 | |
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| 52 | SUBROUTINE repcmo ( pxu1, pyu1, pxv1, pyv1, & |
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| 53 | px2 , py2 ) |
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| 54 | !!---------------------------------------------------------------------- |
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| 55 | !! *** ROUTINE repcmo *** |
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| 56 | !! |
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| 57 | !! ** Purpose : Change vector componantes from a geographic grid to a |
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| 58 | !! stretched coordinates grid. |
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| 59 | !! |
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| 60 | !! ** Method : Initialization of arrays at the first call. |
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| 61 | !! |
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| 62 | !! ** Action : - px2 : first componante (defined at u point) |
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| 63 | !! - py2 : second componante (defined at v point) |
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| 64 | !!---------------------------------------------------------------------- |
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| 65 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: pxu1, pyu1 ! geographic vector componantes at u-point |
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| 66 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: pxv1, pyv1 ! geographic vector componantes at v-point |
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| 67 | REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: px2 ! i-componante (defined at u-point) |
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| 68 | REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: py2 ! j-componante (defined at v-point) |
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| 69 | !!---------------------------------------------------------------------- |
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| 70 | |
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| 71 | ! Change from geographic to stretched coordinate |
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| 72 | ! ---------------------------------------------- |
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| 73 | CALL rot_rep( pxu1, pyu1, 'U', 'en->i',px2 ) |
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| 74 | CALL rot_rep( pxv1, pyv1, 'V', 'en->j',py2 ) |
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| 75 | |
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| 76 | END SUBROUTINE repcmo |
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| 77 | |
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| 78 | |
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| 79 | SUBROUTINE rot_rep ( pxin, pyin, cd_type, cdtodo, prot ) |
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| 80 | !!---------------------------------------------------------------------- |
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| 81 | !! *** ROUTINE rot_rep *** |
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| 82 | !! |
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| 83 | !! ** Purpose : Rotate the Repere: Change vector componantes between |
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| 84 | !! geographic grid <--> stretched coordinates grid. |
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| 85 | !! |
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| 86 | !! History : |
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| 87 | !! 9.2 ! 07-04 (S. Masson) |
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| 88 | !! (O. Marti ) Original code (repere and repcmo) |
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| 89 | !!---------------------------------------------------------------------- |
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| 90 | REAL(wp), DIMENSION(jpi,jpj), INTENT( IN ) :: pxin, pyin ! vector componantes |
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| 91 | CHARACTER(len=1), INTENT( IN ) :: cd_type ! define the nature of pt2d array grid-points |
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| 92 | CHARACTER(len=5), INTENT( IN ) :: cdtodo ! specify the work to do: |
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| 93 | !! ! 'en->i' east-north componantes to model i componante |
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| 94 | !! ! 'en->j' east-north componantes to model j componante |
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| 95 | !! ! 'ij->e' model i-j componantes to east componante |
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| 96 | !! ! 'ij->n' model i-j componantes to east componante |
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| 97 | REAL(wp), DIMENSION(jpi,jpj), INTENT(out) :: prot |
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| 98 | !!---------------------------------------------------------------------- |
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| 99 | |
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| 100 | ! Initialization of gsin* and gcos* at first call |
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| 101 | ! ----------------------------------------------- |
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| 102 | |
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| 103 | IF( lmust_init ) THEN |
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| 104 | IF(lwp) WRITE(numout,*) |
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| 105 | IF(lwp) WRITE(numout,*) ' rot_rep : geographic <--> stretched' |
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| 106 | IF(lwp) WRITE(numout,*) ' ~~~~~ coordinate transformation' |
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| 107 | ! |
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| 108 | CALL angle ! initialization of the transformation |
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| 109 | lmust_init = .FALSE. |
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| 110 | ENDIF |
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| 111 | |
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| 112 | SELECT CASE (cdtodo) |
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| 113 | CASE ('en->i') ! 'en->i' est-north componantes to model i componante |
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| 114 | SELECT CASE (cd_type) |
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| 115 | CASE ('T') ; prot(:,:) = pxin(:,:) * gcost(:,:) + pyin(:,:) * gsint(:,:) |
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| 116 | CASE ('U') ; prot(:,:) = pxin(:,:) * gcosu(:,:) + pyin(:,:) * gsinu(:,:) |
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| 117 | CASE ('V') ; prot(:,:) = pxin(:,:) * gcosv(:,:) + pyin(:,:) * gsinv(:,:) |
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| 118 | CASE ('F') ; prot(:,:) = pxin(:,:) * gcosf(:,:) + pyin(:,:) * gsinf(:,:) |
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| 119 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 120 | END SELECT |
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| 121 | CASE ('en->j') ! 'en->j' est-north componantes to model j componante |
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| 122 | SELECT CASE (cd_type) |
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| 123 | CASE ('T') ; prot(:,:) = pyin(:,:) * gcost(:,:) - pxin(:,:) * gsint(:,:) |
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| 124 | CASE ('U') ; prot(:,:) = pyin(:,:) * gcosu(:,:) - pxin(:,:) * gsinu(:,:) |
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| 125 | CASE ('V') ; prot(:,:) = pyin(:,:) * gcosv(:,:) - pxin(:,:) * gsinv(:,:) |
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| 126 | CASE ('F') ; prot(:,:) = pyin(:,:) * gcosf(:,:) - pxin(:,:) * gsinf(:,:) |
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| 127 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 128 | END SELECT |
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| 129 | CASE ('ij->e') ! 'ij->e' model i-j componantes to est componante |
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| 130 | SELECT CASE (cd_type) |
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| 131 | CASE ('T') ; prot(:,:) = pxin(:,:) * gcost(:,:) - pyin(:,:) * gsint(:,:) |
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| 132 | CASE ('U') ; prot(:,:) = pxin(:,:) * gcosu(:,:) - pyin(:,:) * gsinu(:,:) |
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| 133 | CASE ('V') ; prot(:,:) = pxin(:,:) * gcosv(:,:) - pyin(:,:) * gsinv(:,:) |
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| 134 | CASE ('F') ; prot(:,:) = pxin(:,:) * gcosf(:,:) - pyin(:,:) * gsinf(:,:) |
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| 135 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 136 | END SELECT |
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| 137 | CASE ('ij->n') ! 'ij->n' model i-j componantes to est componante |
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| 138 | SELECT CASE (cd_type) |
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| 139 | CASE ('T') ; prot(:,:) = pyin(:,:) * gcost(:,:) + pxin(:,:) * gsint(:,:) |
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| 140 | CASE ('U') ; prot(:,:) = pyin(:,:) * gcosu(:,:) + pxin(:,:) * gsinu(:,:) |
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| 141 | CASE ('V') ; prot(:,:) = pyin(:,:) * gcosv(:,:) + pxin(:,:) * gsinv(:,:) |
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| 142 | CASE ('F') ; prot(:,:) = pyin(:,:) * gcosf(:,:) + pxin(:,:) * gsinf(:,:) |
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| 143 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 144 | END SELECT |
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| 145 | CASE DEFAULT ; CALL ctl_stop( 'rot_rep: Syntax Error in the definition of cdtodo' ) |
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| 146 | END SELECT |
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| 147 | |
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| 148 | END SUBROUTINE rot_rep |
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| 149 | |
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| 150 | |
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| 151 | SUBROUTINE angle |
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| 152 | !!---------------------------------------------------------------------- |
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| 153 | !! *** ROUTINE angle *** |
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| 154 | !! |
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| 155 | !! ** Purpose : Compute angles between model grid lines and the North direction |
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| 156 | !! |
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| 157 | !! ** Method : |
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| 158 | !! |
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| 159 | !! ** Action : Compute (gsint, gcost, gsinu, gcosu, gsinv, gcosv, gsinf, gcosf) arrays: |
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| 160 | !! sinus and cosinus of the angle between the north-south axe and the |
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| 161 | !! j-direction at t, u, v and f-points |
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| 162 | !! |
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| 163 | !! History : |
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| 164 | !! 7.0 ! 96-07 (O. Marti ) Original code |
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| 165 | !! 8.0 ! 98-06 (G. Madec ) |
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| 166 | !! 8.5 ! 98-06 (G. Madec ) Free form, F90 + opt. |
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| 167 | !! 9.2 ! 07-04 (S. Masson) Add T, F points and bugfix in cos lateral boundary |
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| 168 | !!---------------------------------------------------------------------- |
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| 169 | INTEGER :: ji, jj ! dummy loop indices |
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| 170 | INTEGER :: ierr ! local integer |
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| 171 | REAL(wp) :: & |
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| 172 | zlam, zphi, & ! temporary scalars |
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| 173 | zlan, zphh, & ! " " |
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| 174 | zxnpt, zynpt, znnpt, & ! x,y components and norm of the vector: T point to North Pole |
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| 175 | zxnpu, zynpu, znnpu, & ! x,y components and norm of the vector: U point to North Pole |
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| 176 | zxnpv, zynpv, znnpv, & ! x,y components and norm of the vector: V point to North Pole |
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| 177 | zxnpf, zynpf, znnpf, & ! x,y components and norm of the vector: F point to North Pole |
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| 178 | zxvvt, zyvvt, znvvt, & ! x,y components and norm of the vector: between V points below and above a T point |
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| 179 | zxffu, zyffu, znffu, & ! x,y components and norm of the vector: between F points below and above a U point |
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| 180 | zxffv, zyffv, znffv, & ! x,y components and norm of the vector: between F points left and right a V point |
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| 181 | zxuuf, zyuuf, znuuf ! x,y components and norm of the vector: between U points below and above a F point |
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| 182 | !!---------------------------------------------------------------------- |
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| 183 | IF( .NOT. ALLOCATED( gsint ) ) THEN |
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| 184 | ALLOCATE( gsint(jpi,jpj), gcost(jpi,jpj), & |
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| 185 | & gsinu(jpi,jpj), gcosu(jpi,jpj), & |
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| 186 | & gsinv(jpi,jpj), gcosv(jpi,jpj), & |
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| 187 | & gsinf(jpi,jpj), gcosf(jpi,jpj), STAT=ierr ) |
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| 188 | ENDIF |
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| 189 | IF(lk_mpp) CALL mpp_sum( ierr ) |
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| 190 | IF( ierr /= 0 ) CALL ctl_stop('STOP', 'angle_msh_geo: unable to allocate arrays' ) |
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| 191 | |
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| 192 | ! ============================= ! |
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| 193 | ! Compute the cosinus and sinus ! |
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| 194 | ! ============================= ! |
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| 195 | ! (computation done on the north stereographic polar plane) |
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| 196 | |
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| 197 | DO jj = 2, jpjm1 |
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| 198 | !CDIR NOVERRCHK |
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| 199 | DO ji = fs_2, jpi ! vector opt. |
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| 200 | |
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| 201 | ! north pole direction & modulous (at t-point) |
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| 202 | zlam = glamt(ji,jj) |
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| 203 | zphi = gphit(ji,jj) |
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| 204 | zxnpt = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 205 | zynpt = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 206 | znnpt = zxnpt*zxnpt + zynpt*zynpt |
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| 207 | |
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| 208 | ! north pole direction & modulous (at u-point) |
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| 209 | zlam = glamu(ji,jj) |
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| 210 | zphi = gphiu(ji,jj) |
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| 211 | zxnpu = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 212 | zynpu = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 213 | znnpu = zxnpu*zxnpu + zynpu*zynpu |
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| 214 | |
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| 215 | ! north pole direction & modulous (at v-point) |
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| 216 | zlam = glamv(ji,jj) |
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| 217 | zphi = gphiv(ji,jj) |
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| 218 | zxnpv = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 219 | zynpv = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 220 | znnpv = zxnpv*zxnpv + zynpv*zynpv |
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| 221 | |
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| 222 | ! north pole direction & modulous (at f-point) |
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| 223 | zlam = glamf(ji,jj) |
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| 224 | zphi = gphif(ji,jj) |
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| 225 | zxnpf = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 226 | zynpf = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 227 | znnpf = zxnpf*zxnpf + zynpf*zynpf |
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| 228 | |
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| 229 | ! j-direction: v-point segment direction (around t-point) |
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| 230 | zlam = glamv(ji,jj ) |
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| 231 | zphi = gphiv(ji,jj ) |
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| 232 | zlan = glamv(ji,jj-1) |
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| 233 | zphh = gphiv(ji,jj-1) |
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| 234 | zxvvt = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 235 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 236 | zyvvt = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 237 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 238 | znvvt = SQRT( znnpt * ( zxvvt*zxvvt + zyvvt*zyvvt ) ) |
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| 239 | znvvt = MAX( znvvt, 1.e-14 ) |
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| 240 | |
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| 241 | ! j-direction: f-point segment direction (around u-point) |
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| 242 | zlam = glamf(ji,jj ) |
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| 243 | zphi = gphif(ji,jj ) |
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| 244 | zlan = glamf(ji,jj-1) |
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| 245 | zphh = gphif(ji,jj-1) |
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| 246 | zxffu = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 247 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 248 | zyffu = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 249 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 250 | znffu = SQRT( znnpu * ( zxffu*zxffu + zyffu*zyffu ) ) |
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| 251 | znffu = MAX( znffu, 1.e-14 ) |
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| 252 | |
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| 253 | ! i-direction: f-point segment direction (around v-point) |
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| 254 | zlam = glamf(ji ,jj) |
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| 255 | zphi = gphif(ji ,jj) |
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| 256 | zlan = glamf(ji-1,jj) |
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| 257 | zphh = gphif(ji-1,jj) |
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| 258 | zxffv = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 259 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 260 | zyffv = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 261 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 262 | znffv = SQRT( znnpv * ( zxffv*zxffv + zyffv*zyffv ) ) |
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| 263 | znffv = MAX( znffv, 1.e-14 ) |
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| 264 | |
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| 265 | ! j-direction: u-point segment direction (around f-point) |
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| 266 | zlam = glamu(ji,jj+1) |
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| 267 | zphi = gphiu(ji,jj+1) |
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| 268 | zlan = glamu(ji,jj ) |
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| 269 | zphh = gphiu(ji,jj ) |
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| 270 | zxuuf = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 271 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 272 | zyuuf = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 273 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 274 | znuuf = SQRT( znnpf * ( zxuuf*zxuuf + zyuuf*zyuuf ) ) |
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| 275 | znuuf = MAX( znuuf, 1.e-14 ) |
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| 276 | |
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| 277 | ! cosinus and sinus using scalar and vectorial products |
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| 278 | gsint(ji,jj) = ( zxnpt*zyvvt - zynpt*zxvvt ) / znvvt |
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| 279 | gcost(ji,jj) = ( zxnpt*zxvvt + zynpt*zyvvt ) / znvvt |
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| 280 | |
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| 281 | gsinu(ji,jj) = ( zxnpu*zyffu - zynpu*zxffu ) / znffu |
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| 282 | gcosu(ji,jj) = ( zxnpu*zxffu + zynpu*zyffu ) / znffu |
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| 283 | |
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| 284 | gsinf(ji,jj) = ( zxnpf*zyuuf - zynpf*zxuuf ) / znuuf |
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| 285 | gcosf(ji,jj) = ( zxnpf*zxuuf + zynpf*zyuuf ) / znuuf |
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| 286 | |
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| 287 | ! (caution, rotation of 90 degres) |
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| 288 | gsinv(ji,jj) = ( zxnpv*zxffv + zynpv*zyffv ) / znffv |
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| 289 | gcosv(ji,jj) =-( zxnpv*zyffv - zynpv*zxffv ) / znffv |
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| 290 | |
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| 291 | END DO |
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| 292 | END DO |
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| 293 | |
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| 294 | ! =============== ! |
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| 295 | ! Geographic mesh ! |
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| 296 | ! =============== ! |
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| 297 | |
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| 298 | DO jj = 2, jpjm1 |
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| 299 | DO ji = fs_2, jpi ! vector opt. |
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| 300 | IF( MOD( ABS( glamv(ji,jj) - glamv(ji,jj-1) ), 360. ) < 1.e-8 ) THEN |
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| 301 | gsint(ji,jj) = 0. |
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| 302 | gcost(ji,jj) = 1. |
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| 303 | ENDIF |
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| 304 | IF( MOD( ABS( glamf(ji,jj) - glamf(ji,jj-1) ), 360. ) < 1.e-8 ) THEN |
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| 305 | gsinu(ji,jj) = 0. |
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| 306 | gcosu(ji,jj) = 1. |
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| 307 | ENDIF |
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| 308 | IF( ABS( gphif(ji,jj) - gphif(ji-1,jj) ) < 1.e-8 ) THEN |
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| 309 | gsinv(ji,jj) = 0. |
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| 310 | gcosv(ji,jj) = 1. |
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| 311 | ENDIF |
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| 312 | IF( MOD( ABS( glamu(ji,jj) - glamu(ji,jj+1) ), 360. ) < 1.e-8 ) THEN |
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| 313 | gsinf(ji,jj) = 0. |
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| 314 | gcosf(ji,jj) = 1. |
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| 315 | ENDIF |
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| 316 | END DO |
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| 317 | END DO |
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| 318 | |
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| 319 | ! =========================== ! |
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| 320 | ! Lateral boundary conditions ! |
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| 321 | ! =========================== ! |
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| 322 | |
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| 323 | ! lateral boundary cond.: T-, U-, V-, F-pts, sgn |
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| 324 | CALL lbc_lnk( gcost, 'T', -1. ) ; CALL lbc_lnk( gsint, 'T', -1. ) |
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| 325 | CALL lbc_lnk( gcosu, 'U', -1. ) ; CALL lbc_lnk( gsinu, 'U', -1. ) |
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| 326 | CALL lbc_lnk( gcosv, 'V', -1. ) ; CALL lbc_lnk( gsinv, 'V', -1. ) |
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| 327 | CALL lbc_lnk( gcosf, 'F', -1. ) ; CALL lbc_lnk( gsinf, 'F', -1. ) |
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| 328 | |
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| 329 | END SUBROUTINE angle |
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| 330 | |
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| 331 | |
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| 332 | SUBROUTINE geo2oce ( pxx, pyy, pzz, cgrid, & |
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| 333 | pte, ptn ) |
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| 334 | !!---------------------------------------------------------------------- |
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| 335 | !! *** ROUTINE geo2oce *** |
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| 336 | !! |
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| 337 | !! ** Purpose : |
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| 338 | !! |
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| 339 | !! ** Method : Change wind stress from geocentric to east/north |
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| 340 | !! |
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| 341 | !! History : |
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| 342 | !! ! (O. Marti) Original code |
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| 343 | !! ! 91-03 (G. Madec) |
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| 344 | !! ! 92-07 (M. Imbard) |
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| 345 | !! ! 99-11 (M. Imbard) NetCDF format with IOIPSL |
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| 346 | !! ! 00-08 (D. Ludicone) Reduced section at Bab el Mandeb |
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| 347 | !! 8.5 ! 02-06 (G. Madec) F90: Free form |
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| 348 | !! 3.0 ! 07-08 (G. Madec) geo2oce suppress lon/lat agruments |
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| 349 | !!---------------------------------------------------------------------- |
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| 350 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: pxx, pyy, pzz |
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| 351 | CHARACTER(len=1) , INTENT(in ) :: cgrid |
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| 352 | REAL(wp), DIMENSION(jpi,jpj), INTENT( out) :: pte, ptn |
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| 353 | !! |
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| 354 | REAL(wp), PARAMETER :: rpi = 3.141592653e0 |
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| 355 | REAL(wp), PARAMETER :: rad = rpi / 180.e0 |
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| 356 | INTEGER :: ig ! |
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| 357 | INTEGER :: ierr ! local integer |
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| 358 | !!---------------------------------------------------------------------- |
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| 359 | |
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| 360 | IF( .NOT. ALLOCATED( gsinlon ) ) THEN |
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| 361 | ALLOCATE( gsinlon(jpi,jpj,4) , gcoslon(jpi,jpj,4) , & |
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| 362 | & gsinlat(jpi,jpj,4) , gcoslat(jpi,jpj,4) , STAT=ierr ) |
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| 363 | IF( lk_mpp ) CALL mpp_sum( ierr ) |
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| 364 | IF( ierr /= 0 ) CALL ctl_stop('STOP', 'angle_msh_geo: unable to allocate arrays' ) |
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| 365 | ENDIF |
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| 366 | |
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| 367 | SELECT CASE( cgrid) |
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| 368 | CASE ( 'T' ) |
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| 369 | ig = 1 |
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| 370 | IF( .NOT. linit(ig) ) THEN |
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| 371 | gsinlon(:,:,ig) = SIN( rad * glamt(:,:) ) |
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| 372 | gcoslon(:,:,ig) = COS( rad * glamt(:,:) ) |
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| 373 | gsinlat(:,:,ig) = SIN( rad * gphit(:,:) ) |
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| 374 | gcoslat(:,:,ig) = COS( rad * gphit(:,:) ) |
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| 375 | linit(ig) = .TRUE. |
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| 376 | ENDIF |
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| 377 | CASE ( 'U' ) |
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| 378 | ig = 2 |
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| 379 | IF( .NOT. linit(ig) ) THEN |
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| 380 | gsinlon(:,:,ig) = SIN( rad * glamu(:,:) ) |
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| 381 | gcoslon(:,:,ig) = COS( rad * glamu(:,:) ) |
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| 382 | gsinlat(:,:,ig) = SIN( rad * gphiu(:,:) ) |
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| 383 | gcoslat(:,:,ig) = COS( rad * gphiu(:,:) ) |
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| 384 | linit(ig) = .TRUE. |
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| 385 | ENDIF |
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| 386 | CASE ( 'V' ) |
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| 387 | ig = 3 |
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| 388 | IF( .NOT. linit(ig) ) THEN |
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| 389 | gsinlon(:,:,ig) = SIN( rad * glamv(:,:) ) |
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| 390 | gcoslon(:,:,ig) = COS( rad * glamv(:,:) ) |
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| 391 | gsinlat(:,:,ig) = SIN( rad * gphiv(:,:) ) |
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| 392 | gcoslat(:,:,ig) = COS( rad * gphiv(:,:) ) |
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| 393 | linit(ig) = .TRUE. |
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| 394 | ENDIF |
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| 395 | CASE ( 'F' ) |
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| 396 | ig = 4 |
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| 397 | IF( .NOT. linit(ig) ) THEN |
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| 398 | gsinlon(:,:,ig) = SIN( rad * glamf(:,:) ) |
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| 399 | gcoslon(:,:,ig) = COS( rad * glamf(:,:) ) |
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| 400 | gsinlat(:,:,ig) = SIN( rad * gphif(:,:) ) |
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| 401 | gcoslat(:,:,ig) = COS( rad * gphif(:,:) ) |
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| 402 | linit(ig) = .TRUE. |
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| 403 | ENDIF |
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| 404 | CASE default |
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| 405 | WRITE(ctmp1,*) 'geo2oce : bad grid argument : ', cgrid |
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| 406 | CALL ctl_stop( ctmp1 ) |
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| 407 | END SELECT |
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| 408 | |
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| 409 | pte = - gsinlon(:,:,ig) * pxx + gcoslon(:,:,ig) * pyy |
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| 410 | ptn = - gcoslon(:,:,ig) * gsinlat(:,:,ig) * pxx & |
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| 411 | - gsinlon(:,:,ig) * gsinlat(:,:,ig) * pyy & |
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| 412 | + gcoslat(:,:,ig) * pzz |
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| 413 | !!$ ptv = gcoslon(:,:,ig) * gcoslat(:,:,ig) * pxx & |
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| 414 | !!$ + gsinlon(:,:,ig) * gcoslat(:,:,ig) * pyy & |
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| 415 | !!$ + gsinlat(:,:,ig) * pzz |
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| 416 | ! |
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| 417 | END SUBROUTINE geo2oce |
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| 418 | |
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| 419 | SUBROUTINE oce2geo ( pte, ptn, cgrid, & |
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| 420 | pxx , pyy , pzz ) |
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| 421 | !!---------------------------------------------------------------------- |
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| 422 | !! *** ROUTINE oce2geo *** |
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| 423 | !! |
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| 424 | !! ** Purpose : |
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| 425 | !! |
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| 426 | !! ** Method : Change vector from east/north to geocentric |
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| 427 | !! |
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| 428 | !! History : |
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| 429 | !! ! (A. Caubel) oce2geo - Original code |
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| 430 | !!---------------------------------------------------------------------- |
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| 431 | REAL(wp), DIMENSION(jpi,jpj), INTENT( IN ) :: pte, ptn |
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| 432 | CHARACTER(len=1) , INTENT( IN ) :: cgrid |
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| 433 | REAL(wp), DIMENSION(jpi,jpj), INTENT( OUT ) :: pxx , pyy , pzz |
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| 434 | !! |
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| 435 | REAL(wp), PARAMETER :: rpi = 3.141592653E0 |
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| 436 | REAL(wp), PARAMETER :: rad = rpi / 180.e0 |
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| 437 | INTEGER :: ig ! |
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| 438 | INTEGER :: ierr ! local integer |
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| 439 | !!---------------------------------------------------------------------- |
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| 440 | |
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| 441 | IF( .NOT. ALLOCATED( gsinlon ) ) THEN |
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| 442 | ALLOCATE( gsinlon(jpi,jpj,4) , gcoslon(jpi,jpj,4) , & |
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| 443 | & gsinlat(jpi,jpj,4) , gcoslat(jpi,jpj,4) , STAT=ierr ) |
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| 444 | IF( lk_mpp ) CALL mpp_sum( ierr ) |
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| 445 | IF( ierr /= 0 ) CALL ctl_stop('STOP', 'angle_msh_geo: unable to allocate arrays' ) |
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| 446 | ENDIF |
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| 447 | |
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| 448 | SELECT CASE( cgrid) |
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| 449 | CASE ( 'T' ) |
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| 450 | ig = 1 |
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| 451 | IF( .NOT. linit(ig) ) THEN |
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| 452 | gsinlon(:,:,ig) = SIN( rad * glamt(:,:) ) |
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| 453 | gcoslon(:,:,ig) = COS( rad * glamt(:,:) ) |
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| 454 | gsinlat(:,:,ig) = SIN( rad * gphit(:,:) ) |
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| 455 | gcoslat(:,:,ig) = COS( rad * gphit(:,:) ) |
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| 456 | linit(ig) = .TRUE. |
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| 457 | ENDIF |
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| 458 | CASE ( 'U' ) |
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| 459 | ig = 2 |
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| 460 | IF( .NOT. linit(ig) ) THEN |
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| 461 | gsinlon(:,:,ig) = SIN( rad * glamu(:,:) ) |
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| 462 | gcoslon(:,:,ig) = COS( rad * glamu(:,:) ) |
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| 463 | gsinlat(:,:,ig) = SIN( rad * gphiu(:,:) ) |
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| 464 | gcoslat(:,:,ig) = COS( rad * gphiu(:,:) ) |
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| 465 | linit(ig) = .TRUE. |
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| 466 | ENDIF |
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| 467 | CASE ( 'V' ) |
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| 468 | ig = 3 |
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| 469 | IF( .NOT. linit(ig) ) THEN |
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| 470 | gsinlon(:,:,ig) = SIN( rad * glamv(:,:) ) |
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| 471 | gcoslon(:,:,ig) = COS( rad * glamv(:,:) ) |
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| 472 | gsinlat(:,:,ig) = SIN( rad * gphiv(:,:) ) |
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| 473 | gcoslat(:,:,ig) = COS( rad * gphiv(:,:) ) |
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| 474 | linit(ig) = .TRUE. |
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| 475 | ENDIF |
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| 476 | CASE ( 'F' ) |
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| 477 | ig = 4 |
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| 478 | IF( .NOT. linit(ig) ) THEN |
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| 479 | gsinlon(:,:,ig) = SIN( rad * glamf(:,:) ) |
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| 480 | gcoslon(:,:,ig) = COS( rad * glamf(:,:) ) |
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| 481 | gsinlat(:,:,ig) = SIN( rad * gphif(:,:) ) |
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| 482 | gcoslat(:,:,ig) = COS( rad * gphif(:,:) ) |
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| 483 | linit(ig) = .TRUE. |
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| 484 | ENDIF |
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| 485 | CASE default |
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| 486 | WRITE(ctmp1,*) 'geo2oce : bad grid argument : ', cgrid |
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| 487 | CALL ctl_stop( ctmp1 ) |
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| 488 | END SELECT |
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| 489 | |
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| 490 | pxx = - gsinlon(:,:,ig) * pte - gcoslon(:,:,ig) * gsinlat(:,:,ig) * ptn |
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| 491 | pyy = gcoslon(:,:,ig) * pte - gsinlon(:,:,ig) * gsinlat(:,:,ig) * ptn |
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| 492 | pzz = gcoslat(:,:,ig) * ptn |
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| 493 | |
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| 494 | |
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| 495 | END SUBROUTINE oce2geo |
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| 496 | |
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| 497 | |
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| 498 | SUBROUTINE repere ( px1, py1, px2, py2, kchoix, cd_type ) |
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| 499 | !!---------------------------------------------------------------------- |
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| 500 | !! *** ROUTINE repere *** |
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| 501 | !! |
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| 502 | !! ** Purpose : Change vector componantes between a geopgraphic grid |
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| 503 | !! and a stretched coordinates grid. |
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| 504 | !! |
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| 505 | !! ** Method : |
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| 506 | !! |
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| 507 | !! ** Action : |
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| 508 | !! |
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| 509 | !! History : |
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| 510 | !! ! 89-03 (O. Marti) original code |
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| 511 | !! ! 92-02 (M. Imbard) |
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| 512 | !! ! 93-03 (M. Guyon) symetrical conditions |
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| 513 | !! ! 98-05 (B. Blanke) |
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| 514 | !! 8.5 ! 02-08 (G. Madec) F90: Free form |
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| 515 | !!---------------------------------------------------------------------- |
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| 516 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: px1, py1 ! two horizontal components to be rotated |
---|
| 517 | REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: px2, py2 ! the two horizontal components in the model repere |
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| 518 | INTEGER , INTENT(in ) :: kchoix ! type of transformation |
---|
| 519 | ! ! = 1 change from geographic to model grid. |
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| 520 | ! ! =-1 change from model to geographic grid |
---|
| 521 | CHARACTER(len=1), INTENT(in ), OPTIONAL :: cd_type ! define the nature of pt2d array grid-points |
---|
| 522 | ! |
---|
| 523 | CHARACTER(len=1) :: cl_type ! define the nature of pt2d array grid-points (T point by default) |
---|
| 524 | !!---------------------------------------------------------------------- |
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| 525 | |
---|
| 526 | cl_type = 'T' |
---|
| 527 | IF( PRESENT(cd_type) ) cl_type = cd_type |
---|
| 528 | ! |
---|
| 529 | SELECT CASE (kchoix) |
---|
| 530 | CASE ( 1) ! change from geographic to model grid. |
---|
| 531 | CALL rot_rep( px1, py1, cl_type, 'en->i', px2 ) |
---|
| 532 | CALL rot_rep( px1, py1, cl_type, 'en->j', py2 ) |
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| 533 | CASE (-1) ! change from model to geographic grid |
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| 534 | CALL rot_rep( px1, py1, cl_type, 'ij->e', px2 ) |
---|
| 535 | CALL rot_rep( px1, py1, cl_type, 'ij->n', py2 ) |
---|
| 536 | CASE DEFAULT ; CALL ctl_stop( 'repere: Syntax Error in the definition of kchoix (1 OR -1' ) |
---|
| 537 | END SELECT |
---|
| 538 | |
---|
| 539 | END SUBROUTINE repere |
---|
| 540 | |
---|
| 541 | |
---|
| 542 | SUBROUTINE obs_rot ( psinu, pcosu, psinv, pcosv ) |
---|
| 543 | !!---------------------------------------------------------------------- |
---|
| 544 | !! *** ROUTINE obs_rot *** |
---|
| 545 | !! |
---|
| 546 | !! ** Purpose : Copy gsinu, gcosu, gsinv and gsinv |
---|
| 547 | !! to input data for rotations of |
---|
| 548 | !! current at observation points |
---|
| 549 | !! |
---|
| 550 | !! History : |
---|
| 551 | !! 9.2 ! 09-02 (K. Mogensen) |
---|
| 552 | !!---------------------------------------------------------------------- |
---|
| 553 | REAL(wp), DIMENSION(jpi,jpj), INTENT( OUT ):: psinu, pcosu, psinv, pcosv ! copy of data |
---|
| 554 | !!---------------------------------------------------------------------- |
---|
| 555 | |
---|
| 556 | ! Initialization of gsin* and gcos* at first call |
---|
| 557 | ! ----------------------------------------------- |
---|
| 558 | |
---|
| 559 | IF( lmust_init ) THEN |
---|
| 560 | IF(lwp) WRITE(numout,*) |
---|
| 561 | IF(lwp) WRITE(numout,*) ' obs_rot : geographic <--> stretched' |
---|
| 562 | IF(lwp) WRITE(numout,*) ' ~~~~~~~ coordinate transformation' |
---|
| 563 | |
---|
| 564 | CALL angle ! initialization of the transformation |
---|
| 565 | lmust_init = .FALSE. |
---|
| 566 | |
---|
| 567 | ENDIF |
---|
| 568 | |
---|
| 569 | psinu(:,:) = gsinu(:,:) |
---|
| 570 | pcosu(:,:) = gcosu(:,:) |
---|
| 571 | psinv(:,:) = gsinv(:,:) |
---|
| 572 | pcosv(:,:) = gcosv(:,:) |
---|
| 573 | |
---|
| 574 | END SUBROUTINE obs_rot |
---|
| 575 | |
---|
| 576 | !!====================================================================== |
---|
| 577 | END MODULE geo2ocean |
---|