[3] | 1 | MODULE geo2ocean |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE geo2ocean *** |
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[144] | 4 | !! Ocean mesh : ??? |
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[1218] | 5 | !!====================================================================== |
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| 6 | !! History : OPA ! 07-1996 (O. Marti) Original code |
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[6140] | 7 | !! NEMO 1.0 ! 06-2006 (G. Madec ) Free form, F90 + opt. |
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| 8 | !! ! 04-2007 (S. Masson) angle: Add T, F points and bugfix in cos lateral boundary |
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| 9 | !! 3.0 ! 07-2008 (G. Madec) geo2oce suppress lon/lat agruments |
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| 10 | !! 3.7 ! 11-2015 (G. Madec) remove the unused repere and repcmo routines |
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[1218] | 11 | !!---------------------------------------------------------------------- |
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[3] | 12 | |
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| 13 | !!---------------------------------------------------------------------- |
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[6140] | 14 | !! rot_rep : Rotate the Repere: geographic grid <==> stretched coordinates grid |
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| 15 | !! angle : |
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| 16 | !! geo2oce : |
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| 17 | !! oce2geo : |
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[3] | 18 | !!---------------------------------------------------------------------- |
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[6140] | 19 | USE dom_oce ! mesh and scale factors |
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| 20 | USE phycst ! physical constants |
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| 21 | ! |
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| 22 | USE in_out_manager ! I/O manager |
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| 23 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 24 | USE lib_mpp ! MPP library |
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[3] | 25 | |
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| 26 | IMPLICIT NONE |
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[1218] | 27 | PRIVATE |
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[3] | 28 | |
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[6140] | 29 | PUBLIC rot_rep ! called in sbccpl, fldread, and cyclone |
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| 30 | PUBLIC geo2oce ! called in sbccpl |
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| 31 | PUBLIC oce2geo ! called in sbccpl |
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| 32 | PUBLIC obs_rot ! called in obs_rot_vel and obs_write |
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[3] | 33 | |
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[6140] | 34 | ! ! cos/sin between model grid lines and NP direction |
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| 35 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsint, gcost ! at T point |
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| 36 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsinu, gcosu ! at U point |
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| 37 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsinv, gcosv ! at V point |
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| 38 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsinf, gcosf ! at F point |
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[2528] | 39 | |
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[2715] | 40 | LOGICAL , SAVE, DIMENSION(4) :: linit = .FALSE. |
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| 41 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: gsinlon, gcoslon, gsinlat, gcoslat |
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| 42 | |
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[6140] | 43 | LOGICAL :: lmust_init = .TRUE. !: used to initialize the cos/sin variables (see above) |
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[672] | 44 | |
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[1218] | 45 | !! * Substitutions |
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[3] | 46 | # include "vectopt_loop_substitute.h90" |
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[1218] | 47 | !!---------------------------------------------------------------------- |
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[2528] | 48 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[1226] | 49 | !! $Id$ |
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[2715] | 50 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[1218] | 51 | !!---------------------------------------------------------------------- |
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[3] | 52 | CONTAINS |
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| 53 | |
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[685] | 54 | SUBROUTINE rot_rep ( pxin, pyin, cd_type, cdtodo, prot ) |
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[672] | 55 | !!---------------------------------------------------------------------- |
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| 56 | !! *** ROUTINE rot_rep *** |
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| 57 | !! |
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| 58 | !! ** Purpose : Rotate the Repere: Change vector componantes between |
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| 59 | !! geographic grid <--> stretched coordinates grid. |
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| 60 | !!---------------------------------------------------------------------- |
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[6140] | 61 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: pxin, pyin ! vector componantes |
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| 62 | CHARACTER(len=1), INTENT(in ) :: cd_type ! define the nature of pt2d array grid-points |
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| 63 | CHARACTER(len=5), INTENT(in ) :: cdtodo ! type of transpormation: |
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| 64 | ! ! 'en->i' = east-north to i-component |
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| 65 | ! ! 'en->j' = east-north to j-component |
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| 66 | ! ! 'ij->e' = (i,j) components to east |
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| 67 | ! ! 'ij->n' = (i,j) components to north |
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| 68 | REAL(wp), DIMENSION(jpi,jpj), INTENT( out) :: prot |
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[672] | 69 | !!---------------------------------------------------------------------- |
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[6140] | 70 | ! |
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| 71 | IF( lmust_init ) THEN ! at 1st call only: set gsin. & gcos. |
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[3] | 72 | IF(lwp) WRITE(numout,*) |
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[6140] | 73 | IF(lwp) WRITE(numout,*) ' rot_rep: coordinate transformation : geographic <==> model (i,j)-components' |
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| 74 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~ ' |
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[2715] | 75 | ! |
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[3] | 76 | CALL angle ! initialization of the transformation |
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[672] | 77 | lmust_init = .FALSE. |
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[3] | 78 | ENDIF |
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[6140] | 79 | ! |
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| 80 | SELECT CASE( cdtodo ) ! type of rotation |
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| 81 | ! |
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| 82 | CASE( 'en->i' ) ! east-north to i-component |
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[672] | 83 | SELECT CASE (cd_type) |
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[7753] | 84 | CASE ('T') ; prot(:,:) = pxin(:,:) * gcost(:,:) + pyin(:,:) * gsint(:,:) |
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| 85 | CASE ('U') ; prot(:,:) = pxin(:,:) * gcosu(:,:) + pyin(:,:) * gsinu(:,:) |
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| 86 | CASE ('V') ; prot(:,:) = pxin(:,:) * gcosv(:,:) + pyin(:,:) * gsinv(:,:) |
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| 87 | CASE ('F') ; prot(:,:) = pxin(:,:) * gcosf(:,:) + pyin(:,:) * gsinf(:,:) |
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[672] | 88 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 89 | END SELECT |
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[6140] | 90 | CASE ('en->j') ! east-north to j-component |
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[672] | 91 | SELECT CASE (cd_type) |
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[7753] | 92 | CASE ('T') ; prot(:,:) = pyin(:,:) * gcost(:,:) - pxin(:,:) * gsint(:,:) |
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| 93 | CASE ('U') ; prot(:,:) = pyin(:,:) * gcosu(:,:) - pxin(:,:) * gsinu(:,:) |
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| 94 | CASE ('V') ; prot(:,:) = pyin(:,:) * gcosv(:,:) - pxin(:,:) * gsinv(:,:) |
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| 95 | CASE ('F') ; prot(:,:) = pyin(:,:) * gcosf(:,:) - pxin(:,:) * gsinf(:,:) |
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[672] | 96 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 97 | END SELECT |
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[6140] | 98 | CASE ('ij->e') ! (i,j)-components to east |
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[672] | 99 | SELECT CASE (cd_type) |
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[7753] | 100 | CASE ('T') ; prot(:,:) = pxin(:,:) * gcost(:,:) - pyin(:,:) * gsint(:,:) |
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| 101 | CASE ('U') ; prot(:,:) = pxin(:,:) * gcosu(:,:) - pyin(:,:) * gsinu(:,:) |
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| 102 | CASE ('V') ; prot(:,:) = pxin(:,:) * gcosv(:,:) - pyin(:,:) * gsinv(:,:) |
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| 103 | CASE ('F') ; prot(:,:) = pxin(:,:) * gcosf(:,:) - pyin(:,:) * gsinf(:,:) |
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[672] | 104 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 105 | END SELECT |
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[6140] | 106 | CASE ('ij->n') ! (i,j)-components to north |
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[672] | 107 | SELECT CASE (cd_type) |
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[7753] | 108 | CASE ('T') ; prot(:,:) = pyin(:,:) * gcost(:,:) + pxin(:,:) * gsint(:,:) |
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| 109 | CASE ('U') ; prot(:,:) = pyin(:,:) * gcosu(:,:) + pxin(:,:) * gsinu(:,:) |
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| 110 | CASE ('V') ; prot(:,:) = pyin(:,:) * gcosv(:,:) + pxin(:,:) * gsinv(:,:) |
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| 111 | CASE ('F') ; prot(:,:) = pyin(:,:) * gcosf(:,:) + pxin(:,:) * gsinf(:,:) |
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[672] | 112 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 113 | END SELECT |
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| 114 | CASE DEFAULT ; CALL ctl_stop( 'rot_rep: Syntax Error in the definition of cdtodo' ) |
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[6140] | 115 | ! |
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[672] | 116 | END SELECT |
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[6140] | 117 | ! |
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[685] | 118 | END SUBROUTINE rot_rep |
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[3] | 119 | |
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| 120 | |
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| 121 | SUBROUTINE angle |
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| 122 | !!---------------------------------------------------------------------- |
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| 123 | !! *** ROUTINE angle *** |
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| 124 | !! |
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[672] | 125 | !! ** Purpose : Compute angles between model grid lines and the North direction |
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[3] | 126 | !! |
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[6140] | 127 | !! ** Method : sinus and cosinus of the angle between the north-south axe |
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| 128 | !! and the j-direction at t, u, v and f-points |
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| 129 | !! dot and cross products are used to obtain cos and sin, resp. |
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[3] | 130 | !! |
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[6140] | 131 | !! ** Action : - gsint, gcost, gsinu, gcosu, gsinv, gcosv, gsinf, gcosf |
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[3] | 132 | !!---------------------------------------------------------------------- |
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[6140] | 133 | INTEGER :: ji, jj ! dummy loop indices |
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| 134 | INTEGER :: ierr ! local integer |
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| 135 | REAL(wp) :: zlam, zphi ! local scalars |
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| 136 | REAL(wp) :: zlan, zphh ! - - |
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| 137 | REAL(wp) :: zxnpt, zynpt, znnpt ! x,y components and norm of the vector: T point to North Pole |
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| 138 | REAL(wp) :: zxnpu, zynpu, znnpu ! x,y components and norm of the vector: U point to North Pole |
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| 139 | REAL(wp) :: zxnpv, zynpv, znnpv ! x,y components and norm of the vector: V point to North Pole |
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| 140 | REAL(wp) :: zxnpf, zynpf, znnpf ! x,y components and norm of the vector: F point to North Pole |
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| 141 | REAL(wp) :: zxvvt, zyvvt, znvvt ! x,y components and norm of the vector: between V points below and above a T point |
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| 142 | REAL(wp) :: zxffu, zyffu, znffu ! x,y components and norm of the vector: between F points below and above a U point |
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| 143 | REAL(wp) :: zxffv, zyffv, znffv ! x,y components and norm of the vector: between F points left and right a V point |
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| 144 | REAL(wp) :: zxuuf, zyuuf, znuuf ! x,y components and norm of the vector: between U points below and above a F point |
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[3] | 145 | !!---------------------------------------------------------------------- |
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[6140] | 146 | ! |
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[2715] | 147 | ALLOCATE( gsint(jpi,jpj), gcost(jpi,jpj), & |
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| 148 | & gsinu(jpi,jpj), gcosu(jpi,jpj), & |
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| 149 | & gsinv(jpi,jpj), gcosv(jpi,jpj), & |
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| 150 | & gsinf(jpi,jpj), gcosf(jpi,jpj), STAT=ierr ) |
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| 151 | IF(lk_mpp) CALL mpp_sum( ierr ) |
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[6140] | 152 | IF( ierr /= 0 ) CALL ctl_stop( 'angle: unable to allocate arrays' ) |
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| 153 | ! |
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[3] | 154 | ! ============================= ! |
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| 155 | ! Compute the cosinus and sinus ! |
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| 156 | ! ============================= ! |
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| 157 | ! (computation done on the north stereographic polar plane) |
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[6140] | 158 | ! |
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[672] | 159 | DO jj = 2, jpjm1 |
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[3] | 160 | DO ji = fs_2, jpi ! vector opt. |
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[6140] | 161 | ! |
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| 162 | zlam = glamt(ji,jj) ! north pole direction & modulous (at t-point) |
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[672] | 163 | zphi = gphit(ji,jj) |
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| 164 | zxnpt = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 165 | zynpt = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 166 | znnpt = zxnpt*zxnpt + zynpt*zynpt |
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[6140] | 167 | ! |
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| 168 | zlam = glamu(ji,jj) ! north pole direction & modulous (at u-point) |
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[3] | 169 | zphi = gphiu(ji,jj) |
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| 170 | zxnpu = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 171 | zynpu = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 172 | znnpu = zxnpu*zxnpu + zynpu*zynpu |
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[6140] | 173 | ! |
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| 174 | zlam = glamv(ji,jj) ! north pole direction & modulous (at v-point) |
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[3] | 175 | zphi = gphiv(ji,jj) |
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| 176 | zxnpv = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 177 | zynpv = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 178 | znnpv = zxnpv*zxnpv + zynpv*zynpv |
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[6140] | 179 | ! |
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| 180 | zlam = glamf(ji,jj) ! north pole direction & modulous (at f-point) |
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[672] | 181 | zphi = gphif(ji,jj) |
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| 182 | zxnpf = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 183 | zynpf = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 184 | znnpf = zxnpf*zxnpf + zynpf*zynpf |
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[6140] | 185 | ! |
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| 186 | zlam = glamv(ji,jj ) ! j-direction: v-point segment direction (around t-point) |
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[672] | 187 | zphi = gphiv(ji,jj ) |
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| 188 | zlan = glamv(ji,jj-1) |
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| 189 | zphh = gphiv(ji,jj-1) |
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| 190 | zxvvt = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 191 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 192 | zyvvt = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 193 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 194 | znvvt = SQRT( znnpt * ( zxvvt*zxvvt + zyvvt*zyvvt ) ) |
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| 195 | znvvt = MAX( znvvt, 1.e-14 ) |
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[6140] | 196 | ! |
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| 197 | zlam = glamf(ji,jj ) ! j-direction: f-point segment direction (around u-point) |
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[3] | 198 | zphi = gphif(ji,jj ) |
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| 199 | zlan = glamf(ji,jj-1) |
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| 200 | zphh = gphif(ji,jj-1) |
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| 201 | zxffu = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 202 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 203 | zyffu = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 204 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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[672] | 205 | znffu = SQRT( znnpu * ( zxffu*zxffu + zyffu*zyffu ) ) |
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| 206 | znffu = MAX( znffu, 1.e-14 ) |
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[6140] | 207 | ! |
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| 208 | zlam = glamf(ji ,jj) ! i-direction: f-point segment direction (around v-point) |
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[3] | 209 | zphi = gphif(ji ,jj) |
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| 210 | zlan = glamf(ji-1,jj) |
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| 211 | zphh = gphif(ji-1,jj) |
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| 212 | zxffv = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 213 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 214 | zyffv = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 215 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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[672] | 216 | znffv = SQRT( znnpv * ( zxffv*zxffv + zyffv*zyffv ) ) |
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| 217 | znffv = MAX( znffv, 1.e-14 ) |
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[6140] | 218 | ! |
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| 219 | zlam = glamu(ji,jj+1) ! j-direction: u-point segment direction (around f-point) |
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[672] | 220 | zphi = gphiu(ji,jj+1) |
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| 221 | zlan = glamu(ji,jj ) |
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| 222 | zphh = gphiu(ji,jj ) |
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| 223 | zxuuf = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 224 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 225 | zyuuf = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 226 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 227 | znuuf = SQRT( znnpf * ( zxuuf*zxuuf + zyuuf*zyuuf ) ) |
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| 228 | znuuf = MAX( znuuf, 1.e-14 ) |
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[6140] | 229 | ! |
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| 230 | ! ! cosinus and sinus using dot and cross products |
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[672] | 231 | gsint(ji,jj) = ( zxnpt*zyvvt - zynpt*zxvvt ) / znvvt |
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| 232 | gcost(ji,jj) = ( zxnpt*zxvvt + zynpt*zyvvt ) / znvvt |
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[6140] | 233 | ! |
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[672] | 234 | gsinu(ji,jj) = ( zxnpu*zyffu - zynpu*zxffu ) / znffu |
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| 235 | gcosu(ji,jj) = ( zxnpu*zxffu + zynpu*zyffu ) / znffu |
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[6140] | 236 | ! |
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[672] | 237 | gsinf(ji,jj) = ( zxnpf*zyuuf - zynpf*zxuuf ) / znuuf |
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| 238 | gcosf(ji,jj) = ( zxnpf*zxuuf + zynpf*zyuuf ) / znuuf |
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[6140] | 239 | ! |
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[672] | 240 | gsinv(ji,jj) = ( zxnpv*zxffv + zynpv*zyffv ) / znffv |
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[6140] | 241 | gcosv(ji,jj) =-( zxnpv*zyffv - zynpv*zxffv ) / znffv ! (caution, rotation of 90 degres) |
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| 242 | ! |
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[3] | 243 | END DO |
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| 244 | END DO |
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| 245 | |
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| 246 | ! =============== ! |
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| 247 | ! Geographic mesh ! |
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| 248 | ! =============== ! |
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| 249 | |
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[672] | 250 | DO jj = 2, jpjm1 |
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[3] | 251 | DO ji = fs_2, jpi ! vector opt. |
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[672] | 252 | IF( MOD( ABS( glamv(ji,jj) - glamv(ji,jj-1) ), 360. ) < 1.e-8 ) THEN |
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| 253 | gsint(ji,jj) = 0. |
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| 254 | gcost(ji,jj) = 1. |
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| 255 | ENDIF |
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| 256 | IF( MOD( ABS( glamf(ji,jj) - glamf(ji,jj-1) ), 360. ) < 1.e-8 ) THEN |
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[3] | 257 | gsinu(ji,jj) = 0. |
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| 258 | gcosu(ji,jj) = 1. |
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| 259 | ENDIF |
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[672] | 260 | IF( ABS( gphif(ji,jj) - gphif(ji-1,jj) ) < 1.e-8 ) THEN |
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[3] | 261 | gsinv(ji,jj) = 0. |
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| 262 | gcosv(ji,jj) = 1. |
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| 263 | ENDIF |
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[672] | 264 | IF( MOD( ABS( glamu(ji,jj) - glamu(ji,jj+1) ), 360. ) < 1.e-8 ) THEN |
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| 265 | gsinf(ji,jj) = 0. |
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| 266 | gcosf(ji,jj) = 1. |
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| 267 | ENDIF |
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[3] | 268 | END DO |
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| 269 | END DO |
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| 270 | |
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| 271 | ! =========================== ! |
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| 272 | ! Lateral boundary conditions ! |
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| 273 | ! =========================== ! |
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[6140] | 274 | ! ! lateral boundary cond.: T-, U-, V-, F-pts, sgn |
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[1833] | 275 | CALL lbc_lnk( gcost, 'T', -1. ) ; CALL lbc_lnk( gsint, 'T', -1. ) |
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| 276 | CALL lbc_lnk( gcosu, 'U', -1. ) ; CALL lbc_lnk( gsinu, 'U', -1. ) |
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| 277 | CALL lbc_lnk( gcosv, 'V', -1. ) ; CALL lbc_lnk( gsinv, 'V', -1. ) |
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| 278 | CALL lbc_lnk( gcosf, 'F', -1. ) ; CALL lbc_lnk( gsinf, 'F', -1. ) |
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[6140] | 279 | ! |
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[3] | 280 | END SUBROUTINE angle |
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| 281 | |
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| 282 | |
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[6140] | 283 | SUBROUTINE geo2oce ( pxx, pyy, pzz, cgrid, pte, ptn ) |
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[3] | 284 | !!---------------------------------------------------------------------- |
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| 285 | !! *** ROUTINE geo2oce *** |
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| 286 | !! |
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| 287 | !! ** Purpose : |
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| 288 | !! |
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[6140] | 289 | !! ** Method : Change a vector from geocentric to east/north |
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[3] | 290 | !! |
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| 291 | !!---------------------------------------------------------------------- |
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[1218] | 292 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: pxx, pyy, pzz |
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| 293 | CHARACTER(len=1) , INTENT(in ) :: cgrid |
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| 294 | REAL(wp), DIMENSION(jpi,jpj), INTENT( out) :: pte, ptn |
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[6140] | 295 | ! |
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[2715] | 296 | REAL(wp), PARAMETER :: rpi = 3.141592653e0 |
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[88] | 297 | REAL(wp), PARAMETER :: rad = rpi / 180.e0 |
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[1218] | 298 | INTEGER :: ig ! |
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[2715] | 299 | INTEGER :: ierr ! local integer |
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[1218] | 300 | !!---------------------------------------------------------------------- |
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[6140] | 301 | ! |
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[2715] | 302 | IF( .NOT. ALLOCATED( gsinlon ) ) THEN |
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| 303 | ALLOCATE( gsinlon(jpi,jpj,4) , gcoslon(jpi,jpj,4) , & |
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| 304 | & gsinlat(jpi,jpj,4) , gcoslat(jpi,jpj,4) , STAT=ierr ) |
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| 305 | IF( lk_mpp ) CALL mpp_sum( ierr ) |
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[4162] | 306 | IF( ierr /= 0 ) CALL ctl_stop('geo2oce: unable to allocate arrays' ) |
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[2715] | 307 | ENDIF |
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[6140] | 308 | ! |
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[1218] | 309 | SELECT CASE( cgrid) |
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[6140] | 310 | CASE ( 'T' ) |
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| 311 | ig = 1 |
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| 312 | IF( .NOT. linit(ig) ) THEN |
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| 313 | gsinlon(:,:,ig) = SIN( rad * glamt(:,:) ) |
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| 314 | gcoslon(:,:,ig) = COS( rad * glamt(:,:) ) |
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| 315 | gsinlat(:,:,ig) = SIN( rad * gphit(:,:) ) |
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| 316 | gcoslat(:,:,ig) = COS( rad * gphit(:,:) ) |
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| 317 | linit(ig) = .TRUE. |
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| 318 | ENDIF |
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| 319 | CASE ( 'U' ) |
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| 320 | ig = 2 |
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| 321 | IF( .NOT. linit(ig) ) THEN |
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| 322 | gsinlon(:,:,ig) = SIN( rad * glamu(:,:) ) |
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| 323 | gcoslon(:,:,ig) = COS( rad * glamu(:,:) ) |
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| 324 | gsinlat(:,:,ig) = SIN( rad * gphiu(:,:) ) |
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| 325 | gcoslat(:,:,ig) = COS( rad * gphiu(:,:) ) |
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| 326 | linit(ig) = .TRUE. |
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| 327 | ENDIF |
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| 328 | CASE ( 'V' ) |
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| 329 | ig = 3 |
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| 330 | IF( .NOT. linit(ig) ) THEN |
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| 331 | gsinlon(:,:,ig) = SIN( rad * glamv(:,:) ) |
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| 332 | gcoslon(:,:,ig) = COS( rad * glamv(:,:) ) |
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| 333 | gsinlat(:,:,ig) = SIN( rad * gphiv(:,:) ) |
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| 334 | gcoslat(:,:,ig) = COS( rad * gphiv(:,:) ) |
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| 335 | linit(ig) = .TRUE. |
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| 336 | ENDIF |
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| 337 | CASE ( 'F' ) |
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| 338 | ig = 4 |
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| 339 | IF( .NOT. linit(ig) ) THEN |
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| 340 | gsinlon(:,:,ig) = SIN( rad * glamf(:,:) ) |
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| 341 | gcoslon(:,:,ig) = COS( rad * glamf(:,:) ) |
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| 342 | gsinlat(:,:,ig) = SIN( rad * gphif(:,:) ) |
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| 343 | gcoslat(:,:,ig) = COS( rad * gphif(:,:) ) |
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| 344 | linit(ig) = .TRUE. |
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| 345 | ENDIF |
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| 346 | CASE default |
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| 347 | WRITE(ctmp1,*) 'geo2oce : bad grid argument : ', cgrid |
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| 348 | CALL ctl_stop( ctmp1 ) |
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[1218] | 349 | END SELECT |
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[6140] | 350 | ! |
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[2715] | 351 | pte = - gsinlon(:,:,ig) * pxx + gcoslon(:,:,ig) * pyy |
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| 352 | ptn = - gcoslon(:,:,ig) * gsinlat(:,:,ig) * pxx & |
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[6140] | 353 | & - gsinlon(:,:,ig) * gsinlat(:,:,ig) * pyy & |
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| 354 | & + gcoslat(:,:,ig) * pzz |
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[1218] | 355 | ! |
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| 356 | END SUBROUTINE geo2oce |
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| 357 | |
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[6140] | 358 | |
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| 359 | SUBROUTINE oce2geo ( pte, ptn, cgrid, pxx , pyy , pzz ) |
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[1218] | 360 | !!---------------------------------------------------------------------- |
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| 361 | !! *** ROUTINE oce2geo *** |
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| 362 | !! |
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| 363 | !! ** Purpose : |
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| 364 | !! |
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| 365 | !! ** Method : Change vector from east/north to geocentric |
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| 366 | !! |
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[6140] | 367 | !! History : ! (A. Caubel) oce2geo - Original code |
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[1218] | 368 | !!---------------------------------------------------------------------- |
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| 369 | REAL(wp), DIMENSION(jpi,jpj), INTENT( IN ) :: pte, ptn |
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| 370 | CHARACTER(len=1) , INTENT( IN ) :: cgrid |
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| 371 | REAL(wp), DIMENSION(jpi,jpj), INTENT( OUT ) :: pxx , pyy , pzz |
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| 372 | !! |
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| 373 | REAL(wp), PARAMETER :: rpi = 3.141592653E0 |
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| 374 | REAL(wp), PARAMETER :: rad = rpi / 180.e0 |
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[3] | 375 | INTEGER :: ig ! |
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[2715] | 376 | INTEGER :: ierr ! local integer |
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[3] | 377 | !!---------------------------------------------------------------------- |
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| 378 | |
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[4162] | 379 | IF( .NOT. ALLOCATED( gsinlon ) ) THEN |
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[2715] | 380 | ALLOCATE( gsinlon(jpi,jpj,4) , gcoslon(jpi,jpj,4) , & |
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| 381 | & gsinlat(jpi,jpj,4) , gcoslat(jpi,jpj,4) , STAT=ierr ) |
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| 382 | IF( lk_mpp ) CALL mpp_sum( ierr ) |
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[4162] | 383 | IF( ierr /= 0 ) CALL ctl_stop('oce2geo: unable to allocate arrays' ) |
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[2715] | 384 | ENDIF |
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| 385 | |
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[3] | 386 | SELECT CASE( cgrid) |
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[1226] | 387 | CASE ( 'T' ) |
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| 388 | ig = 1 |
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| 389 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 390 | gsinlon(:,:,ig) = SIN( rad * glamt(:,:) ) |
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| 391 | gcoslon(:,:,ig) = COS( rad * glamt(:,:) ) |
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| 392 | gsinlat(:,:,ig) = SIN( rad * gphit(:,:) ) |
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| 393 | gcoslat(:,:,ig) = COS( rad * gphit(:,:) ) |
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[1226] | 394 | linit(ig) = .TRUE. |
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| 395 | ENDIF |
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| 396 | CASE ( 'U' ) |
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| 397 | ig = 2 |
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| 398 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 399 | gsinlon(:,:,ig) = SIN( rad * glamu(:,:) ) |
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| 400 | gcoslon(:,:,ig) = COS( rad * glamu(:,:) ) |
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| 401 | gsinlat(:,:,ig) = SIN( rad * gphiu(:,:) ) |
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| 402 | gcoslat(:,:,ig) = COS( rad * gphiu(:,:) ) |
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[1226] | 403 | linit(ig) = .TRUE. |
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| 404 | ENDIF |
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| 405 | CASE ( 'V' ) |
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| 406 | ig = 3 |
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| 407 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 408 | gsinlon(:,:,ig) = SIN( rad * glamv(:,:) ) |
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| 409 | gcoslon(:,:,ig) = COS( rad * glamv(:,:) ) |
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| 410 | gsinlat(:,:,ig) = SIN( rad * gphiv(:,:) ) |
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| 411 | gcoslat(:,:,ig) = COS( rad * gphiv(:,:) ) |
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[1226] | 412 | linit(ig) = .TRUE. |
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| 413 | ENDIF |
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| 414 | CASE ( 'F' ) |
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| 415 | ig = 4 |
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| 416 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 417 | gsinlon(:,:,ig) = SIN( rad * glamf(:,:) ) |
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| 418 | gcoslon(:,:,ig) = COS( rad * glamf(:,:) ) |
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| 419 | gsinlat(:,:,ig) = SIN( rad * gphif(:,:) ) |
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| 420 | gcoslat(:,:,ig) = COS( rad * gphif(:,:) ) |
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[1226] | 421 | linit(ig) = .TRUE. |
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| 422 | ENDIF |
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| 423 | CASE default |
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| 424 | WRITE(ctmp1,*) 'geo2oce : bad grid argument : ', cgrid |
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[474] | 425 | CALL ctl_stop( ctmp1 ) |
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[1226] | 426 | END SELECT |
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[6140] | 427 | ! |
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| 428 | pxx = - gsinlon(:,:,ig) * pte - gcoslon(:,:,ig) * gsinlat(:,:,ig) * ptn |
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| 429 | pyy = gcoslon(:,:,ig) * pte - gsinlon(:,:,ig) * gsinlat(:,:,ig) * ptn |
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| 430 | pzz = gcoslat(:,:,ig) * ptn |
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| 431 | ! |
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[1218] | 432 | END SUBROUTINE oce2geo |
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[3] | 433 | |
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| 434 | |
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[6140] | 435 | SUBROUTINE obs_rot( psinu, pcosu, psinv, pcosv ) |
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[3] | 436 | !!---------------------------------------------------------------------- |
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[2528] | 437 | !! *** ROUTINE obs_rot *** |
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| 438 | !! |
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| 439 | !! ** Purpose : Copy gsinu, gcosu, gsinv and gsinv |
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| 440 | !! to input data for rotations of |
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| 441 | !! current at observation points |
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| 442 | !! |
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[6140] | 443 | !! History : 9.2 ! 09-02 (K. Mogensen) |
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[2528] | 444 | !!---------------------------------------------------------------------- |
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[2715] | 445 | REAL(wp), DIMENSION(jpi,jpj), INTENT( OUT ):: psinu, pcosu, psinv, pcosv ! copy of data |
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[2528] | 446 | !!---------------------------------------------------------------------- |
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[6140] | 447 | ! |
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[2528] | 448 | ! Initialization of gsin* and gcos* at first call |
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| 449 | ! ----------------------------------------------- |
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| 450 | IF( lmust_init ) THEN |
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| 451 | IF(lwp) WRITE(numout,*) |
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| 452 | IF(lwp) WRITE(numout,*) ' obs_rot : geographic <--> stretched' |
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| 453 | IF(lwp) WRITE(numout,*) ' ~~~~~~~ coordinate transformation' |
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| 454 | CALL angle ! initialization of the transformation |
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| 455 | lmust_init = .FALSE. |
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| 456 | ENDIF |
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[6140] | 457 | ! |
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[2528] | 458 | psinu(:,:) = gsinu(:,:) |
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| 459 | pcosu(:,:) = gcosu(:,:) |
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| 460 | psinv(:,:) = gsinv(:,:) |
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| 461 | pcosv(:,:) = gcosv(:,:) |
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[6140] | 462 | ! |
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[2528] | 463 | END SUBROUTINE obs_rot |
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| 464 | |
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[3] | 465 | !!====================================================================== |
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| 466 | END MODULE geo2ocean |
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