[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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[6140] | 13 | !! rot_rep : Rotate the Repere: geographic grid <==> stretched coordinates grid |
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| 14 | !! angle : |
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| 15 | !! geo2oce : |
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| 16 | !! oce2geo : |
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[3] | 17 | !!---------------------------------------------------------------------- |
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[6140] | 18 | USE dom_oce ! mesh and scale factors |
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| 19 | USE phycst ! physical constants |
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| 20 | ! |
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| 21 | USE in_out_manager ! I/O manager |
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| 22 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 23 | USE lib_mpp ! MPP library |
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[3] | 24 | |
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| 25 | IMPLICIT NONE |
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[1218] | 26 | PRIVATE |
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[3] | 27 | |
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[6140] | 28 | PUBLIC rot_rep ! called in sbccpl, fldread, and cyclone |
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| 29 | PUBLIC geo2oce ! called in sbccpl |
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| 30 | PUBLIC oce2geo ! called in sbccpl |
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| 31 | PUBLIC obs_rot ! called in obs_rot_vel and obs_write |
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[3] | 32 | |
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[6140] | 33 | ! ! cos/sin between model grid lines and NP direction |
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| 34 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsint, gcost ! at T point |
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| 35 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsinu, gcosu ! at U point |
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| 36 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsinv, gcosv ! at V point |
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| 37 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: gsinf, gcosf ! at F point |
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[2528] | 38 | |
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[2715] | 39 | LOGICAL , SAVE, DIMENSION(4) :: linit = .FALSE. |
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| 40 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: gsinlon, gcoslon, gsinlat, gcoslat |
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| 41 | |
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[6140] | 42 | LOGICAL :: lmust_init = .TRUE. !: used to initialize the cos/sin variables (see above) |
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[672] | 43 | |
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[1218] | 44 | !! * Substitutions |
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[3] | 45 | # include "vectopt_loop_substitute.h90" |
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[1218] | 46 | !!---------------------------------------------------------------------- |
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[9598] | 47 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[1226] | 48 | !! $Id$ |
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[10068] | 49 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[1218] | 50 | !!---------------------------------------------------------------------- |
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[3] | 51 | CONTAINS |
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| 52 | |
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[685] | 53 | SUBROUTINE rot_rep ( pxin, pyin, cd_type, cdtodo, prot ) |
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[672] | 54 | !!---------------------------------------------------------------------- |
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| 55 | !! *** ROUTINE rot_rep *** |
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| 56 | !! |
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| 57 | !! ** Purpose : Rotate the Repere: Change vector componantes between |
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| 58 | !! geographic grid <--> stretched coordinates grid. |
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| 59 | !!---------------------------------------------------------------------- |
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[6140] | 60 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: pxin, pyin ! vector componantes |
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| 61 | CHARACTER(len=1), INTENT(in ) :: cd_type ! define the nature of pt2d array grid-points |
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| 62 | CHARACTER(len=5), INTENT(in ) :: cdtodo ! type of transpormation: |
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| 63 | ! ! 'en->i' = east-north to i-component |
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| 64 | ! ! 'en->j' = east-north to j-component |
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| 65 | ! ! 'ij->e' = (i,j) components to east |
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| 66 | ! ! 'ij->n' = (i,j) components to north |
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| 67 | REAL(wp), DIMENSION(jpi,jpj), INTENT( out) :: prot |
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[672] | 68 | !!---------------------------------------------------------------------- |
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[6140] | 69 | ! |
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| 70 | IF( lmust_init ) THEN ! at 1st call only: set gsin. & gcos. |
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[3] | 71 | IF(lwp) WRITE(numout,*) |
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[6140] | 72 | IF(lwp) WRITE(numout,*) ' rot_rep: coordinate transformation : geographic <==> model (i,j)-components' |
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| 73 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~ ' |
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[2715] | 74 | ! |
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[10370] | 75 | CALL angle( glamt, gphit, glamu, gphiu, glamv, gphiv, glamf, gphif ) ! initialization of the transformation |
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[672] | 76 | lmust_init = .FALSE. |
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[3] | 77 | ENDIF |
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[6140] | 78 | ! |
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| 79 | SELECT CASE( cdtodo ) ! type of rotation |
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| 80 | ! |
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| 81 | CASE( 'en->i' ) ! east-north to i-component |
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[672] | 82 | SELECT CASE (cd_type) |
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[7753] | 83 | CASE ('T') ; prot(:,:) = pxin(:,:) * gcost(:,:) + pyin(:,:) * gsint(:,:) |
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| 84 | CASE ('U') ; prot(:,:) = pxin(:,:) * gcosu(:,:) + pyin(:,:) * gsinu(:,:) |
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| 85 | CASE ('V') ; prot(:,:) = pxin(:,:) * gcosv(:,:) + pyin(:,:) * gsinv(:,:) |
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| 86 | CASE ('F') ; prot(:,:) = pxin(:,:) * gcosf(:,:) + pyin(:,:) * gsinf(:,:) |
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[672] | 87 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 88 | END SELECT |
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[6140] | 89 | CASE ('en->j') ! east-north to j-component |
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[672] | 90 | SELECT CASE (cd_type) |
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[7753] | 91 | CASE ('T') ; prot(:,:) = pyin(:,:) * gcost(:,:) - pxin(:,:) * gsint(:,:) |
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| 92 | CASE ('U') ; prot(:,:) = pyin(:,:) * gcosu(:,:) - pxin(:,:) * gsinu(:,:) |
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| 93 | CASE ('V') ; prot(:,:) = pyin(:,:) * gcosv(:,:) - pxin(:,:) * gsinv(:,:) |
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| 94 | CASE ('F') ; prot(:,:) = pyin(:,:) * gcosf(:,:) - pxin(:,:) * gsinf(:,:) |
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[672] | 95 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 96 | END SELECT |
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[6140] | 97 | CASE ('ij->e') ! (i,j)-components to east |
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[672] | 98 | SELECT CASE (cd_type) |
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[7753] | 99 | CASE ('T') ; prot(:,:) = pxin(:,:) * gcost(:,:) - pyin(:,:) * gsint(:,:) |
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| 100 | CASE ('U') ; prot(:,:) = pxin(:,:) * gcosu(:,:) - pyin(:,:) * gsinu(:,:) |
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| 101 | CASE ('V') ; prot(:,:) = pxin(:,:) * gcosv(:,:) - pyin(:,:) * gsinv(:,:) |
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| 102 | CASE ('F') ; prot(:,:) = pxin(:,:) * gcosf(:,:) - pyin(:,:) * gsinf(:,:) |
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[672] | 103 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 104 | END SELECT |
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[6140] | 105 | CASE ('ij->n') ! (i,j)-components to north |
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[672] | 106 | SELECT CASE (cd_type) |
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[7753] | 107 | CASE ('T') ; prot(:,:) = pyin(:,:) * gcost(:,:) + pxin(:,:) * gsint(:,:) |
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| 108 | CASE ('U') ; prot(:,:) = pyin(:,:) * gcosu(:,:) + pxin(:,:) * gsinu(:,:) |
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| 109 | CASE ('V') ; prot(:,:) = pyin(:,:) * gcosv(:,:) + pxin(:,:) * gsinv(:,:) |
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| 110 | CASE ('F') ; prot(:,:) = pyin(:,:) * gcosf(:,:) + pxin(:,:) * gsinf(:,:) |
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[672] | 111 | CASE DEFAULT ; CALL ctl_stop( 'Only T, U, V and F grid points are coded' ) |
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| 112 | END SELECT |
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| 113 | CASE DEFAULT ; CALL ctl_stop( 'rot_rep: Syntax Error in the definition of cdtodo' ) |
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[6140] | 114 | ! |
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[672] | 115 | END SELECT |
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[6140] | 116 | ! |
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[685] | 117 | END SUBROUTINE rot_rep |
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[3] | 118 | |
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| 119 | |
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[10370] | 120 | SUBROUTINE angle( plamt, pphit, plamu, pphiu, plamv, pphiv, plamf, pphif ) |
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[3] | 121 | !!---------------------------------------------------------------------- |
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| 122 | !! *** ROUTINE angle *** |
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| 123 | !! |
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[672] | 124 | !! ** Purpose : Compute angles between model grid lines and the North direction |
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[3] | 125 | !! |
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[6140] | 126 | !! ** Method : sinus and cosinus of the angle between the north-south axe |
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| 127 | !! and the j-direction at t, u, v and f-points |
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| 128 | !! dot and cross products are used to obtain cos and sin, resp. |
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[3] | 129 | !! |
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[6140] | 130 | !! ** Action : - gsint, gcost, gsinu, gcosu, gsinv, gcosv, gsinf, gcosf |
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[3] | 131 | !!---------------------------------------------------------------------- |
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[10370] | 132 | ! WARNING: for an unexplained reason, we need to pass all glam, gphi arrays as input parameters in |
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| 133 | ! order to get AGRIF working with -03 compilation option |
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| 134 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: plamt, pphit, plamu, pphiu, plamv, pphiv, plamf, pphif |
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| 135 | ! |
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[6140] | 136 | INTEGER :: ji, jj ! dummy loop indices |
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| 137 | INTEGER :: ierr ! local integer |
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| 138 | REAL(wp) :: zlam, zphi ! local scalars |
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| 139 | REAL(wp) :: zlan, zphh ! - - |
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| 140 | REAL(wp) :: zxnpt, zynpt, znnpt ! x,y components and norm of the vector: T point to North Pole |
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| 141 | REAL(wp) :: zxnpu, zynpu, znnpu ! x,y components and norm of the vector: U point to North Pole |
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| 142 | REAL(wp) :: zxnpv, zynpv, znnpv ! x,y components and norm of the vector: V point to North Pole |
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| 143 | REAL(wp) :: zxnpf, zynpf, znnpf ! x,y components and norm of the vector: F point to North Pole |
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| 144 | 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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| 145 | 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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| 146 | 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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| 147 | 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] | 148 | !!---------------------------------------------------------------------- |
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[6140] | 149 | ! |
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[2715] | 150 | ALLOCATE( gsint(jpi,jpj), gcost(jpi,jpj), & |
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| 151 | & gsinu(jpi,jpj), gcosu(jpi,jpj), & |
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| 152 | & gsinv(jpi,jpj), gcosv(jpi,jpj), & |
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| 153 | & gsinf(jpi,jpj), gcosf(jpi,jpj), STAT=ierr ) |
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[10425] | 154 | CALL mpp_sum( 'geo2ocean', ierr ) |
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[6140] | 155 | IF( ierr /= 0 ) CALL ctl_stop( 'angle: unable to allocate arrays' ) |
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| 156 | ! |
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[3] | 157 | ! ============================= ! |
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| 158 | ! Compute the cosinus and sinus ! |
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| 159 | ! ============================= ! |
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| 160 | ! (computation done on the north stereographic polar plane) |
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[6140] | 161 | ! |
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[672] | 162 | DO jj = 2, jpjm1 |
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[3] | 163 | DO ji = fs_2, jpi ! vector opt. |
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[6140] | 164 | ! |
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[10370] | 165 | zlam = plamt(ji,jj) ! north pole direction & modulous (at t-point) |
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| 166 | zphi = pphit(ji,jj) |
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[672] | 167 | zxnpt = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 168 | zynpt = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 169 | znnpt = zxnpt*zxnpt + zynpt*zynpt |
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[6140] | 170 | ! |
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[10370] | 171 | zlam = plamu(ji,jj) ! north pole direction & modulous (at u-point) |
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| 172 | zphi = pphiu(ji,jj) |
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[3] | 173 | zxnpu = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 174 | zynpu = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 175 | znnpu = zxnpu*zxnpu + zynpu*zynpu |
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[6140] | 176 | ! |
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[10370] | 177 | zlam = plamv(ji,jj) ! north pole direction & modulous (at v-point) |
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| 178 | zphi = pphiv(ji,jj) |
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[3] | 179 | zxnpv = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 180 | zynpv = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 181 | znnpv = zxnpv*zxnpv + zynpv*zynpv |
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[6140] | 182 | ! |
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[10370] | 183 | zlam = plamf(ji,jj) ! north pole direction & modulous (at f-point) |
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| 184 | zphi = pphif(ji,jj) |
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[672] | 185 | zxnpf = 0. - 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 186 | zynpf = 0. - 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) |
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| 187 | znnpf = zxnpf*zxnpf + zynpf*zynpf |
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[6140] | 188 | ! |
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[10370] | 189 | zlam = plamv(ji,jj ) ! j-direction: v-point segment direction (around t-point) |
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| 190 | zphi = pphiv(ji,jj ) |
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| 191 | zlan = plamv(ji,jj-1) |
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| 192 | zphh = pphiv(ji,jj-1) |
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[672] | 193 | zxvvt = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 194 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 195 | zyvvt = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 196 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 197 | znvvt = SQRT( znnpt * ( zxvvt*zxvvt + zyvvt*zyvvt ) ) |
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| 198 | znvvt = MAX( znvvt, 1.e-14 ) |
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[6140] | 199 | ! |
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[10370] | 200 | zlam = plamf(ji,jj ) ! j-direction: f-point segment direction (around u-point) |
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| 201 | zphi = pphif(ji,jj ) |
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| 202 | zlan = plamf(ji,jj-1) |
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| 203 | zphh = pphif(ji,jj-1) |
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[3] | 204 | zxffu = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 205 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 206 | zyffu = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 207 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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[672] | 208 | znffu = SQRT( znnpu * ( zxffu*zxffu + zyffu*zyffu ) ) |
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| 209 | znffu = MAX( znffu, 1.e-14 ) |
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[6140] | 210 | ! |
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[10370] | 211 | zlam = plamf(ji ,jj) ! i-direction: f-point segment direction (around v-point) |
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| 212 | zphi = pphif(ji ,jj) |
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| 213 | zlan = plamf(ji-1,jj) |
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| 214 | zphh = pphif(ji-1,jj) |
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[3] | 215 | zxffv = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 216 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 217 | zyffv = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 218 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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[672] | 219 | znffv = SQRT( znnpv * ( zxffv*zxffv + zyffv*zyffv ) ) |
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| 220 | znffv = MAX( znffv, 1.e-14 ) |
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[6140] | 221 | ! |
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[10370] | 222 | zlam = plamu(ji,jj+1) ! j-direction: u-point segment direction (around f-point) |
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| 223 | zphi = pphiu(ji,jj+1) |
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| 224 | zlan = plamu(ji,jj ) |
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| 225 | zphh = pphiu(ji,jj ) |
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[672] | 226 | zxuuf = 2. * COS( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 227 | & - 2. * COS( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 228 | zyuuf = 2. * SIN( rad*zlam ) * TAN( rpi/4. - rad*zphi/2. ) & |
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| 229 | & - 2. * SIN( rad*zlan ) * TAN( rpi/4. - rad*zphh/2. ) |
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| 230 | znuuf = SQRT( znnpf * ( zxuuf*zxuuf + zyuuf*zyuuf ) ) |
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| 231 | znuuf = MAX( znuuf, 1.e-14 ) |
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[6140] | 232 | ! |
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| 233 | ! ! cosinus and sinus using dot and cross products |
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[672] | 234 | gsint(ji,jj) = ( zxnpt*zyvvt - zynpt*zxvvt ) / znvvt |
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| 235 | gcost(ji,jj) = ( zxnpt*zxvvt + zynpt*zyvvt ) / znvvt |
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[6140] | 236 | ! |
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[672] | 237 | gsinu(ji,jj) = ( zxnpu*zyffu - zynpu*zxffu ) / znffu |
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| 238 | gcosu(ji,jj) = ( zxnpu*zxffu + zynpu*zyffu ) / znffu |
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[6140] | 239 | ! |
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[672] | 240 | gsinf(ji,jj) = ( zxnpf*zyuuf - zynpf*zxuuf ) / znuuf |
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| 241 | gcosf(ji,jj) = ( zxnpf*zxuuf + zynpf*zyuuf ) / znuuf |
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[6140] | 242 | ! |
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[672] | 243 | gsinv(ji,jj) = ( zxnpv*zxffv + zynpv*zyffv ) / znffv |
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[6140] | 244 | gcosv(ji,jj) =-( zxnpv*zyffv - zynpv*zxffv ) / znffv ! (caution, rotation of 90 degres) |
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| 245 | ! |
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[3] | 246 | END DO |
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| 247 | END DO |
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| 248 | |
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| 249 | ! =============== ! |
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| 250 | ! Geographic mesh ! |
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| 251 | ! =============== ! |
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| 252 | |
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[672] | 253 | DO jj = 2, jpjm1 |
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[3] | 254 | DO ji = fs_2, jpi ! vector opt. |
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[10370] | 255 | IF( MOD( ABS( plamv(ji,jj) - plamv(ji,jj-1) ), 360. ) < 1.e-8 ) THEN |
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[672] | 256 | gsint(ji,jj) = 0. |
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| 257 | gcost(ji,jj) = 1. |
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| 258 | ENDIF |
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[10370] | 259 | IF( MOD( ABS( plamf(ji,jj) - plamf(ji,jj-1) ), 360. ) < 1.e-8 ) THEN |
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[3] | 260 | gsinu(ji,jj) = 0. |
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| 261 | gcosu(ji,jj) = 1. |
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| 262 | ENDIF |
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[10370] | 263 | IF( ABS( pphif(ji,jj) - pphif(ji-1,jj) ) < 1.e-8 ) THEN |
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[3] | 264 | gsinv(ji,jj) = 0. |
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| 265 | gcosv(ji,jj) = 1. |
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| 266 | ENDIF |
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[10370] | 267 | IF( MOD( ABS( plamu(ji,jj) - plamu(ji,jj+1) ), 360. ) < 1.e-8 ) THEN |
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[672] | 268 | gsinf(ji,jj) = 0. |
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| 269 | gcosf(ji,jj) = 1. |
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| 270 | ENDIF |
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[3] | 271 | END DO |
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| 272 | END DO |
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| 273 | |
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| 274 | ! =========================== ! |
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| 275 | ! Lateral boundary conditions ! |
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| 276 | ! =========================== ! |
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[6140] | 277 | ! ! lateral boundary cond.: T-, U-, V-, F-pts, sgn |
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[10425] | 278 | CALL lbc_lnk_multi( 'geo2ocean', gcost, 'T', -1., gsint, 'T', -1., gcosu, 'U', -1., gsinu, 'U', -1., & |
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[9098] | 279 | & gcosv, 'V', -1., gsinv, 'V', -1., gcosf, 'F', -1., gsinf, 'F', -1. ) |
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[6140] | 280 | ! |
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[3] | 281 | END SUBROUTINE angle |
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| 282 | |
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| 283 | |
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[6140] | 284 | SUBROUTINE geo2oce ( pxx, pyy, pzz, cgrid, pte, ptn ) |
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[3] | 285 | !!---------------------------------------------------------------------- |
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| 286 | !! *** ROUTINE geo2oce *** |
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| 287 | !! |
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| 288 | !! ** Purpose : |
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| 289 | !! |
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[6140] | 290 | !! ** Method : Change a vector from geocentric to east/north |
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[3] | 291 | !! |
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| 292 | !!---------------------------------------------------------------------- |
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[1218] | 293 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: pxx, pyy, pzz |
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| 294 | CHARACTER(len=1) , INTENT(in ) :: cgrid |
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| 295 | REAL(wp), DIMENSION(jpi,jpj), INTENT( out) :: pte, ptn |
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[6140] | 296 | ! |
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[2715] | 297 | REAL(wp), PARAMETER :: rpi = 3.141592653e0 |
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[88] | 298 | REAL(wp), PARAMETER :: rad = rpi / 180.e0 |
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[1218] | 299 | INTEGER :: ig ! |
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[2715] | 300 | INTEGER :: ierr ! local integer |
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[1218] | 301 | !!---------------------------------------------------------------------- |
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[6140] | 302 | ! |
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[2715] | 303 | IF( .NOT. ALLOCATED( gsinlon ) ) THEN |
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| 304 | ALLOCATE( gsinlon(jpi,jpj,4) , gcoslon(jpi,jpj,4) , & |
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| 305 | & gsinlat(jpi,jpj,4) , gcoslat(jpi,jpj,4) , STAT=ierr ) |
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[10425] | 306 | CALL mpp_sum( 'geo2ocean', ierr ) |
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[4162] | 307 | IF( ierr /= 0 ) CALL ctl_stop('geo2oce: unable to allocate arrays' ) |
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[2715] | 308 | ENDIF |
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[6140] | 309 | ! |
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[1218] | 310 | SELECT CASE( cgrid) |
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[6140] | 311 | CASE ( 'T' ) |
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| 312 | ig = 1 |
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| 313 | IF( .NOT. linit(ig) ) THEN |
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| 314 | gsinlon(:,:,ig) = SIN( rad * glamt(:,:) ) |
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| 315 | gcoslon(:,:,ig) = COS( rad * glamt(:,:) ) |
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| 316 | gsinlat(:,:,ig) = SIN( rad * gphit(:,:) ) |
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| 317 | gcoslat(:,:,ig) = COS( rad * gphit(:,:) ) |
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| 318 | linit(ig) = .TRUE. |
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| 319 | ENDIF |
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| 320 | CASE ( 'U' ) |
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| 321 | ig = 2 |
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| 322 | IF( .NOT. linit(ig) ) THEN |
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| 323 | gsinlon(:,:,ig) = SIN( rad * glamu(:,:) ) |
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| 324 | gcoslon(:,:,ig) = COS( rad * glamu(:,:) ) |
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| 325 | gsinlat(:,:,ig) = SIN( rad * gphiu(:,:) ) |
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| 326 | gcoslat(:,:,ig) = COS( rad * gphiu(:,:) ) |
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| 327 | linit(ig) = .TRUE. |
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| 328 | ENDIF |
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| 329 | CASE ( 'V' ) |
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| 330 | ig = 3 |
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| 331 | IF( .NOT. linit(ig) ) THEN |
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| 332 | gsinlon(:,:,ig) = SIN( rad * glamv(:,:) ) |
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| 333 | gcoslon(:,:,ig) = COS( rad * glamv(:,:) ) |
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| 334 | gsinlat(:,:,ig) = SIN( rad * gphiv(:,:) ) |
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| 335 | gcoslat(:,:,ig) = COS( rad * gphiv(:,:) ) |
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| 336 | linit(ig) = .TRUE. |
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| 337 | ENDIF |
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| 338 | CASE ( 'F' ) |
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| 339 | ig = 4 |
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| 340 | IF( .NOT. linit(ig) ) THEN |
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| 341 | gsinlon(:,:,ig) = SIN( rad * glamf(:,:) ) |
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| 342 | gcoslon(:,:,ig) = COS( rad * glamf(:,:) ) |
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| 343 | gsinlat(:,:,ig) = SIN( rad * gphif(:,:) ) |
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| 344 | gcoslat(:,:,ig) = COS( rad * gphif(:,:) ) |
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| 345 | linit(ig) = .TRUE. |
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| 346 | ENDIF |
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| 347 | CASE default |
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| 348 | WRITE(ctmp1,*) 'geo2oce : bad grid argument : ', cgrid |
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| 349 | CALL ctl_stop( ctmp1 ) |
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[1218] | 350 | END SELECT |
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[6140] | 351 | ! |
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[2715] | 352 | pte = - gsinlon(:,:,ig) * pxx + gcoslon(:,:,ig) * pyy |
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| 353 | ptn = - gcoslon(:,:,ig) * gsinlat(:,:,ig) * pxx & |
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[6140] | 354 | & - gsinlon(:,:,ig) * gsinlat(:,:,ig) * pyy & |
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| 355 | & + gcoslat(:,:,ig) * pzz |
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[1218] | 356 | ! |
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| 357 | END SUBROUTINE geo2oce |
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| 358 | |
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[6140] | 359 | |
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| 360 | SUBROUTINE oce2geo ( pte, ptn, cgrid, pxx , pyy , pzz ) |
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[1218] | 361 | !!---------------------------------------------------------------------- |
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| 362 | !! *** ROUTINE oce2geo *** |
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| 363 | !! |
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| 364 | !! ** Purpose : |
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| 365 | !! |
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| 366 | !! ** Method : Change vector from east/north to geocentric |
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| 367 | !! |
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[6140] | 368 | !! History : ! (A. Caubel) oce2geo - Original code |
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[1218] | 369 | !!---------------------------------------------------------------------- |
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| 370 | REAL(wp), DIMENSION(jpi,jpj), INTENT( IN ) :: pte, ptn |
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| 371 | CHARACTER(len=1) , INTENT( IN ) :: cgrid |
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| 372 | REAL(wp), DIMENSION(jpi,jpj), INTENT( OUT ) :: pxx , pyy , pzz |
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| 373 | !! |
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| 374 | REAL(wp), PARAMETER :: rpi = 3.141592653E0 |
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| 375 | REAL(wp), PARAMETER :: rad = rpi / 180.e0 |
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[3] | 376 | INTEGER :: ig ! |
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[2715] | 377 | INTEGER :: ierr ! local integer |
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[3] | 378 | !!---------------------------------------------------------------------- |
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| 379 | |
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[4162] | 380 | IF( .NOT. ALLOCATED( gsinlon ) ) THEN |
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[2715] | 381 | ALLOCATE( gsinlon(jpi,jpj,4) , gcoslon(jpi,jpj,4) , & |
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| 382 | & gsinlat(jpi,jpj,4) , gcoslat(jpi,jpj,4) , STAT=ierr ) |
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[10425] | 383 | CALL mpp_sum( 'geo2ocean', ierr ) |
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[4162] | 384 | IF( ierr /= 0 ) CALL ctl_stop('oce2geo: unable to allocate arrays' ) |
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[2715] | 385 | ENDIF |
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| 386 | |
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[3] | 387 | SELECT CASE( cgrid) |
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[1226] | 388 | CASE ( 'T' ) |
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| 389 | ig = 1 |
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| 390 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 391 | gsinlon(:,:,ig) = SIN( rad * glamt(:,:) ) |
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| 392 | gcoslon(:,:,ig) = COS( rad * glamt(:,:) ) |
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| 393 | gsinlat(:,:,ig) = SIN( rad * gphit(:,:) ) |
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| 394 | gcoslat(:,:,ig) = COS( rad * gphit(:,:) ) |
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[1226] | 395 | linit(ig) = .TRUE. |
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| 396 | ENDIF |
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| 397 | CASE ( 'U' ) |
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| 398 | ig = 2 |
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| 399 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 400 | gsinlon(:,:,ig) = SIN( rad * glamu(:,:) ) |
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| 401 | gcoslon(:,:,ig) = COS( rad * glamu(:,:) ) |
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| 402 | gsinlat(:,:,ig) = SIN( rad * gphiu(:,:) ) |
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| 403 | gcoslat(:,:,ig) = COS( rad * gphiu(:,:) ) |
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[1226] | 404 | linit(ig) = .TRUE. |
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| 405 | ENDIF |
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| 406 | CASE ( 'V' ) |
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| 407 | ig = 3 |
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| 408 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 409 | gsinlon(:,:,ig) = SIN( rad * glamv(:,:) ) |
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| 410 | gcoslon(:,:,ig) = COS( rad * glamv(:,:) ) |
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| 411 | gsinlat(:,:,ig) = SIN( rad * gphiv(:,:) ) |
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| 412 | gcoslat(:,:,ig) = COS( rad * gphiv(:,:) ) |
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[1226] | 413 | linit(ig) = .TRUE. |
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| 414 | ENDIF |
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| 415 | CASE ( 'F' ) |
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| 416 | ig = 4 |
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| 417 | IF( .NOT. linit(ig) ) THEN |
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[2715] | 418 | gsinlon(:,:,ig) = SIN( rad * glamf(:,:) ) |
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| 419 | gcoslon(:,:,ig) = COS( rad * glamf(:,:) ) |
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| 420 | gsinlat(:,:,ig) = SIN( rad * gphif(:,:) ) |
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| 421 | gcoslat(:,:,ig) = COS( rad * gphif(:,:) ) |
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[1226] | 422 | linit(ig) = .TRUE. |
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| 423 | ENDIF |
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| 424 | CASE default |
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| 425 | WRITE(ctmp1,*) 'geo2oce : bad grid argument : ', cgrid |
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[474] | 426 | CALL ctl_stop( ctmp1 ) |
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[1226] | 427 | END SELECT |
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[6140] | 428 | ! |
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| 429 | pxx = - gsinlon(:,:,ig) * pte - gcoslon(:,:,ig) * gsinlat(:,:,ig) * ptn |
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| 430 | pyy = gcoslon(:,:,ig) * pte - gsinlon(:,:,ig) * gsinlat(:,:,ig) * ptn |
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| 431 | pzz = gcoslat(:,:,ig) * ptn |
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| 432 | ! |
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[1218] | 433 | END SUBROUTINE oce2geo |
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[3] | 434 | |
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| 435 | |
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[6140] | 436 | SUBROUTINE obs_rot( psinu, pcosu, psinv, pcosv ) |
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[3] | 437 | !!---------------------------------------------------------------------- |
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[2528] | 438 | !! *** ROUTINE obs_rot *** |
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| 439 | !! |
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| 440 | !! ** Purpose : Copy gsinu, gcosu, gsinv and gsinv |
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| 441 | !! to input data for rotations of |
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| 442 | !! current at observation points |
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| 443 | !! |
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[6140] | 444 | !! History : 9.2 ! 09-02 (K. Mogensen) |
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[2528] | 445 | !!---------------------------------------------------------------------- |
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[2715] | 446 | REAL(wp), DIMENSION(jpi,jpj), INTENT( OUT ):: psinu, pcosu, psinv, pcosv ! copy of data |
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[2528] | 447 | !!---------------------------------------------------------------------- |
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[6140] | 448 | ! |
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[2528] | 449 | ! Initialization of gsin* and gcos* at first call |
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| 450 | ! ----------------------------------------------- |
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| 451 | IF( lmust_init ) THEN |
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| 452 | IF(lwp) WRITE(numout,*) |
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| 453 | IF(lwp) WRITE(numout,*) ' obs_rot : geographic <--> stretched' |
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| 454 | IF(lwp) WRITE(numout,*) ' ~~~~~~~ coordinate transformation' |
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[10370] | 455 | CALL angle( glamt, gphit, glamu, gphiu, glamv, gphiv, glamf, gphif ) ! initialization of the transformation |
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[2528] | 456 | lmust_init = .FALSE. |
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| 457 | ENDIF |
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[6140] | 458 | ! |
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[2528] | 459 | psinu(:,:) = gsinu(:,:) |
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| 460 | pcosu(:,:) = gcosu(:,:) |
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| 461 | psinv(:,:) = gsinv(:,:) |
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| 462 | pcosv(:,:) = gcosv(:,:) |
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[6140] | 463 | ! |
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[2528] | 464 | END SUBROUTINE obs_rot |
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| 465 | |
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[3] | 466 | !!====================================================================== |
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| 467 | END MODULE geo2ocean |
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