| 1 | MODULE lbclnk |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE zdftke *** |
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| 4 | !! Ocean : lateral boundary conditions |
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| 5 | !!===================================================================== |
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| 6 | #if defined key_mpp |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! 'key_mpp' : distributed memory computing |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! lbc_lnk : generic interface for mpp_lnk_3d and mpp_lnk_2d |
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| 11 | !! routines defined in lib_mpp |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! * Modules used |
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| 14 | USE lib_mpp ! distributed memory computing library |
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| 15 | |
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| 16 | INTERFACE lbc_lnk |
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| 17 | MODULE PROCEDURE mpp_lnk_3d, mpp_lnk_2d |
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| 18 | END INTERFACE |
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| 19 | |
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| 20 | PUBLIC lbc_lnk ! ocean lateral boundary conditions |
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| 21 | !!---------------------------------------------------------------------- |
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| 22 | |
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| 23 | #else |
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| 24 | !!---------------------------------------------------------------------- |
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| 25 | !! Default option shared memory computing |
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| 26 | !!---------------------------------------------------------------------- |
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| 27 | !! lbc_lnk : generic interface for lbc_lnk_3d and lbc_lnk_2d |
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| 28 | !! lbc_lnk_3d : set the lateral boundary condition on a 3D variable |
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| 29 | !! on OPA ocean mesh |
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| 30 | !! lbc_lnk_2d : set the lateral boundary condition on a 2D variable |
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| 31 | !! on OPA ocean mesh |
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| 32 | !!---------------------------------------------------------------------- |
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| 33 | !! * Modules used |
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| 34 | USE oce ! ocean dynamics and tracers |
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| 35 | USE dom_oce ! ocean space and time domain |
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| 36 | USE in_out_manager ! I/O manager |
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| 37 | |
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| 38 | IMPLICIT NONE |
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| 39 | PRIVATE |
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| 40 | |
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| 41 | INTERFACE lbc_lnk |
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| 42 | MODULE PROCEDURE lbc_lnk_3d, lbc_lnk_2d |
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| 43 | END INTERFACE |
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| 44 | |
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| 45 | PUBLIC lbc_lnk ! ocean/ice lateral boundary conditions |
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| 46 | !!---------------------------------------------------------------------- |
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| 47 | |
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| 48 | CONTAINS |
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| 49 | |
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| 50 | SUBROUTINE lbc_lnk_3d( pt3d, cd_type, psgn ) |
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| 51 | !!--------------------------------------------------------------------- |
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| 52 | !! *** ROUTINE lbc_lnk_3d *** |
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| 53 | !! |
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| 54 | !! ** Purpose : set lateral boundary conditions (non mpp case) |
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| 55 | !! |
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| 56 | !! ** Method : |
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| 57 | !! |
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| 58 | !! History : |
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| 59 | !! ! 97-06 (G. Madec) Original code |
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| 60 | !! 8.5 ! 02-09 (G. Madec) F90: Free form and module |
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| 61 | !!---------------------------------------------------------------------- |
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| 62 | !! * Arguments |
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| 63 | CHARACTER(len=1), INTENT( in ) :: & |
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| 64 | cd_type ! nature of pt3d grid-points |
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| 65 | ! ! = T , U , V , F or W gridpoints |
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| 66 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT( inout ) :: & |
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| 67 | pt3d ! 3D array on which the boundary condition is applied |
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| 68 | REAL(wp), INTENT( in ) :: & |
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| 69 | psgn ! control of the sign change |
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| 70 | ! ! =-1 , the sign is changed if north fold boundary |
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| 71 | ! ! = 1 , no sign change |
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| 72 | |
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| 73 | !! * Local declarations |
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| 74 | INTEGER :: ji, jk |
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| 75 | INTEGER :: ijt, iju |
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| 76 | !!---------------------------------------------------------------------- |
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| 77 | !! OPA 8.5, LODYC-IPSL (2002) |
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| 78 | !!---------------------------------------------------------------------- |
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| 79 | |
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| 80 | ! ! =============== |
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| 81 | DO jk = 1, jpk ! Horizontal slab |
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| 82 | ! ! =============== |
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| 83 | |
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| 84 | ! ! East-West boundaries |
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| 85 | ! ! ==================== |
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| 86 | SELECT CASE ( nperio ) |
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| 87 | |
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| 88 | CASE ( 1 , 4 , 6 ) ! * cyclic east-west |
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| 89 | |
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| 90 | pt3d( 1 ,:,jk) = pt3d(jpim1,:,jk) ! all points |
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| 91 | pt3d(jpi,:,jk) = pt3d( 2 ,:,jk) |
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| 92 | |
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| 93 | CASE DEFAULT ! * closed |
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| 94 | |
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| 95 | SELECT CASE ( cd_type ) |
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| 96 | |
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| 97 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 98 | pt3d( 1 ,:,jk) = 0.e0 |
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| 99 | pt3d(jpi,:,jk) = 0.e0 |
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| 100 | |
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| 101 | CASE ( 'F' ) ! F-point |
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| 102 | pt3d(jpi,:,jk) = 0.e0 |
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| 103 | |
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| 104 | END SELECT |
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| 105 | |
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| 106 | END SELECT |
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| 107 | |
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| 108 | ! ! North-South boundaries |
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| 109 | ! ! ====================== |
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| 110 | SELECT CASE ( nperio ) |
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| 111 | |
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| 112 | CASE ( 2 ) ! * south symmetric |
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| 113 | |
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| 114 | SELECT CASE ( cd_type ) |
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| 115 | |
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| 116 | CASE ( 'T' , 'U' , 'W' ) ! T-, U-, W-points |
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| 117 | pt3d(:, 1 ,jk) = pt3d(:,3,jk) |
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| 118 | pt3d(:,jpj,jk) = 0.e0 |
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| 119 | |
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| 120 | CASE ( 'V' , 'F' ) ! V-, F-points |
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| 121 | pt3d(:, 1 ,jk) = psgn * pt3d(:,2,jk) |
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| 122 | pt3d(:,jpj,jk) = 0.e0 |
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| 123 | |
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| 124 | END SELECT |
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| 125 | |
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| 126 | CASE ( 3 , 4 ) ! * North fold T-point pivot |
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| 127 | |
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| 128 | pt3d( 1 ,jpj,jk) = 0.e0 |
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| 129 | pt3d(jpi,jpj,jk) = 0.e0 |
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| 130 | |
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| 131 | SELECT CASE ( cd_type ) |
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| 132 | |
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| 133 | CASE ( 'T' , 'W' ) ! T-, W-point |
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| 134 | DO ji = 2, jpi |
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| 135 | ijt = jpi-ji+2 |
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| 136 | pt3d(ji, 1 ,jk) = 0.e0 |
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| 137 | pt3d(ji,jpj,jk) = psgn * pt3d(ijt,jpj-2,jk) |
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| 138 | END DO |
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| 139 | DO ji = jpi/2+1, jpi |
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| 140 | ijt = jpi-ji+2 |
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| 141 | pt3d(ji,jpjm1,jk) = psgn * pt3d(ijt,jpjm1,jk) |
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| 142 | END DO |
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| 143 | |
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| 144 | CASE ( 'U' ) ! U-point |
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| 145 | DO ji = 1, jpi-1 |
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| 146 | iju = jpi-ji+1 |
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| 147 | pt3d(ji, 1 ,jk) = 0.e0 |
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| 148 | pt3d(ji,jpj,jk) = psgn * pt3d(iju,jpj-2,jk) |
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| 149 | END DO |
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| 150 | DO ji = jpi/2, jpi-1 |
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| 151 | iju = jpi-ji+1 |
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| 152 | pt3d(ji,jpjm1,jk) = psgn * pt3d(iju,jpjm1,jk) |
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| 153 | END DO |
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| 154 | |
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| 155 | CASE ( 'V' ) ! V-point |
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| 156 | DO ji = 2, jpi |
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| 157 | ijt = jpi-ji+2 |
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| 158 | pt3d(ji, 1 ,jk) = 0.e0 |
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| 159 | pt3d(ji,jpj-1,jk) = psgn * pt3d(ijt,jpj-2,jk) |
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| 160 | pt3d(ji,jpj ,jk) = psgn * pt3d(ijt,jpj-3,jk) |
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| 161 | END DO |
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| 162 | |
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| 163 | CASE ( 'F' ) ! F-point |
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| 164 | DO ji = 1, jpi-1 |
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| 165 | iju = jpi-ji+1 |
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| 166 | pt3d(ji,jpj-1,jk) = pt3d(iju,jpj-2,jk) |
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| 167 | pt3d(ji,jpj ,jk) = pt3d(iju,jpj-3,jk) |
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| 168 | END DO |
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| 169 | |
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| 170 | END SELECT |
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| 171 | |
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| 172 | CASE ( 5 , 6 ) ! * North fold F-point pivot |
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| 173 | |
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| 174 | pt3d( 1 ,jpj,jk) = 0.e0 |
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| 175 | pt3d(jpi,jpj,jk) = 0.e0 |
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| 176 | |
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| 177 | SELECT CASE ( cd_type ) |
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| 178 | |
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| 179 | CASE ( 'T' , 'W' ) ! T-, W-point |
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| 180 | DO ji = 1, jpi |
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| 181 | ijt = jpi-ji+1 |
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| 182 | pt3d(ji, 1 ,jk) = 0.e0 |
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| 183 | pt3d(ji,jpj,jk) = psgn * pt3d(ijt,jpj-1,jk) |
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| 184 | END DO |
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| 185 | |
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| 186 | CASE ( 'U' ) ! U-point |
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| 187 | DO ji = 1, jpi-1 |
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| 188 | iju = jpi-ji |
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| 189 | pt3d(ji, 1 ,jk) = 0.e0 |
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| 190 | pt3d(ji,jpj,jk) = psgn * pt3d(iju,jpj-1,jk) |
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| 191 | END DO |
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| 192 | |
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| 193 | CASE ( 'V' ) ! V-point |
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| 194 | DO ji = 1, jpi |
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| 195 | ijt = jpi-ji+1 |
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| 196 | pt3d(ji, 1 ,jk) = 0.e0 |
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| 197 | pt3d(ji,jpj,jk) = psgn * pt3d(ijt,jpj-2,jk) |
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| 198 | END DO |
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| 199 | DO ji = jpi/2+1, jpi |
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| 200 | ijt = jpi-ji+1 |
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| 201 | pt3d(ji,jpjm1,jk) = psgn * pt3d(ijt,jpjm1,jk) |
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| 202 | END DO |
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| 203 | |
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| 204 | CASE ( 'F' ) ! F-point |
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| 205 | DO ji = 1, jpi-1 |
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| 206 | iju = jpi-ji |
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| 207 | pt3d(ji,jpj ,jk) = pt3d(iju,jpj-2,jk) |
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| 208 | END DO |
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| 209 | DO ji = jpi/2+1, jpi-1 |
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| 210 | iju = jpi-ji |
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| 211 | pt3d(ji,jpjm1,jk) = pt3d(iju,jpjm1,jk) |
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| 212 | END DO |
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| 213 | END SELECT |
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| 214 | |
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| 215 | CASE DEFAULT ! * closed |
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| 216 | |
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| 217 | SELECT CASE ( cd_type ) |
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| 218 | |
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| 219 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 220 | pt3d(:, 1 ,jk) = 0.e0 |
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| 221 | pt3d(:,jpj,jk) = 0.e0 |
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| 222 | |
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| 223 | CASE ( 'F' ) ! F-point |
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| 224 | pt3d(:,jpj,jk) = 0.e0 |
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| 225 | |
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| 226 | END SELECT |
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| 227 | |
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| 228 | END SELECT |
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| 229 | ! ! =============== |
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| 230 | END DO ! End of slab |
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| 231 | ! ! =============== |
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| 232 | END SUBROUTINE lbc_lnk_3d |
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| 233 | |
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| 234 | |
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| 235 | SUBROUTINE lbc_lnk_2d( pt2d, cd_type, psgn ) |
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| 236 | !!--------------------------------------------------------------------- |
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| 237 | !! *** ROUTINE lbc_lnk_2d *** |
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| 238 | !! |
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| 239 | !! ** Purpose : set lateral boundary conditions (non mpp case) |
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| 240 | !! |
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| 241 | !! ** Method : |
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| 242 | !! |
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| 243 | !! History : |
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| 244 | !! ! 97-06 (G. Madec) Original code |
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| 245 | !! ! 01-05 (E. Durand) correction |
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| 246 | !! 8.5 ! 02-09 (G. Madec) F90: Free form and module |
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| 247 | !!---------------------------------------------------------------------- |
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| 248 | !! * Arguments |
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| 249 | CHARACTER(len=1), INTENT( in ) :: & |
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| 250 | cd_type ! nature of pt2d grid-point |
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| 251 | ! ! = T , U , V , F or W gridpoints |
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| 252 | ! ! = I sea-ice U-V gridpoint (= F ocean grid point with indice shift) |
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| 253 | REAL(wp), INTENT( in ) :: & |
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| 254 | psgn ! control of the sign change |
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| 255 | ! ! =-1 , the sign is modified following the type of b.c. used |
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| 256 | ! ! = 1 , no sign change |
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| 257 | REAL(wp), DIMENSION(jpi,jpj), INTENT( inout ) :: & |
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| 258 | pt2d ! 2D array on which the boundary condition is applied |
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| 259 | |
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| 260 | !! * Local declarations |
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| 261 | INTEGER :: ji |
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| 262 | INTEGER :: ijt, iju |
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| 263 | !!---------------------------------------------------------------------- |
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| 264 | !! OPA 8.5, LODYC-IPSL (2002) |
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| 265 | !!---------------------------------------------------------------------- |
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| 266 | |
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| 267 | |
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| 268 | ! ! East-West boundaries |
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| 269 | ! ! ==================== |
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| 270 | SELECT CASE ( nperio ) |
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| 271 | |
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| 272 | CASE ( 1 , 4 , 6 ) ! * cyclic east-west |
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| 273 | |
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| 274 | pt2d( 1 ,:) = pt2d(jpim1,:) |
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| 275 | pt2d(jpi,:) = pt2d( 2 ,:) |
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| 276 | |
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| 277 | CASE DEFAULT ! * closed |
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| 278 | |
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| 279 | SELECT CASE ( cd_type ) |
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| 280 | |
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| 281 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 282 | pt2d( 1 ,:) = 0.e0 |
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| 283 | pt2d(jpi,:) = 0.e0 |
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| 284 | |
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| 285 | CASE ( 'F' , 'I' ) ! F-point, ice U-V point |
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| 286 | pt2d(jpi,:) = 0.e0 |
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| 287 | |
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| 288 | END SELECT |
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| 289 | |
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| 290 | END SELECT |
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| 291 | |
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| 292 | ! ! North-South boundaries |
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| 293 | ! ! ====================== |
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| 294 | SELECT CASE ( nperio ) |
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| 295 | |
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| 296 | CASE ( 2 ) ! * South symmetric |
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| 297 | |
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| 298 | SELECT CASE ( cd_type ) |
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| 299 | |
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| 300 | CASE ( 'T' , 'U' , 'W' ) ! T-, U-, W-points |
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| 301 | pt2d(:, 1 ) = pt2d(:,3) |
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| 302 | pt2d(:,jpj) = 0.e0 |
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| 303 | |
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| 304 | CASE ( 'V' , 'F' ) ! V-, F-points, ice U-V point |
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| 305 | pt2d(:, 1 ) = psgn * pt2d(:,2) |
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| 306 | pt2d(:,jpj) = 0.e0 |
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| 307 | |
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| 308 | END SELECT |
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| 309 | |
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| 310 | CASE ( 3 , 4 ) ! * North fold T-point pivot |
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| 311 | |
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| 312 | pt2d( 1 , 1 ) = 0.e0 !!!!! bug gm ??? !Edmee |
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| 313 | pt2d( 1 ,jpj) = 0.e0 |
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| 314 | pt2d(jpi,jpj) = 0.e0 |
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| 315 | |
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| 316 | SELECT CASE ( cd_type ) |
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| 317 | |
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| 318 | CASE ( 'T' , 'W' ) ! T-, W-point |
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| 319 | DO ji = 2, jpi |
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| 320 | ijt = jpi-ji+2 |
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| 321 | pt2d(ji, 1 ) = 0.e0 |
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| 322 | pt2d(ji,jpj) = psgn * pt2d(ijt,jpj-2) |
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| 323 | END DO |
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| 324 | DO ji = jpi/2+1, jpi |
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| 325 | ijt = jpi-ji+2 |
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| 326 | pt2d(ji,jpjm1) = psgn * pt2d(ijt,jpjm1) |
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| 327 | END DO |
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| 328 | |
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| 329 | CASE ( 'U' ) ! U-point |
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| 330 | DO ji = 1, jpi-1 |
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| 331 | iju = jpi-ji+1 |
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| 332 | pt2d(ji, 1 ) = 0.e0 |
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| 333 | pt2d(ji,jpj) = psgn * pt2d(iju,jpj-2) |
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| 334 | END DO |
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| 335 | DO ji = jpi/2, jpi-1 |
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| 336 | iju = jpi-ji+1 |
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| 337 | pt2d(ji,jpjm1) = psgn * pt2d(iju,jpjm1) |
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| 338 | END DO |
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| 339 | |
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| 340 | CASE ( 'V' ) ! V-point |
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| 341 | DO ji = 2, jpi |
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| 342 | ijt = jpi-ji+2 |
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| 343 | pt2d(ji, 1 ) = 0.e0 |
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| 344 | pt2d(ji,jpj-1) = psgn * pt2d(ijt,jpj-2) |
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| 345 | pt2d(ji,jpj ) = psgn * pt2d(ijt,jpj-3) |
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| 346 | END DO |
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| 347 | |
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| 348 | CASE ( 'F' ) ! F-point |
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| 349 | DO ji = 1, jpi-1 |
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| 350 | iju = jpi - ji + 1 |
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| 351 | pt2d(ji,jpj-1) = pt2d(iju,jpj-2) |
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| 352 | pt2d(ji,jpj ) = pt2d(iju,jpj-3) |
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| 353 | END DO |
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| 354 | |
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| 355 | CASE ( 'I' ) ! ice U-V point |
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| 356 | pt2d(2,jpj) = psgn * pt2d(3,jpj-1) |
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| 357 | DO ji = 3, jpi |
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| 358 | iju = jpi - ji + 3 |
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| 359 | pt2d(ji,jpj) = psgn * pt2d(iju,jpj-1) |
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| 360 | END DO |
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| 361 | |
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| 362 | END SELECT |
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| 363 | |
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| 364 | CASE ( 5 , 6 ) ! * North fold F-point pivot |
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| 365 | |
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| 366 | pt2d( 1 , 1 ) = 0.e0 !!bug ??? |
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| 367 | pt2d( 1 ,jpj) = 0.e0 |
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| 368 | pt2d(jpi,jpj) = 0.e0 |
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| 369 | |
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| 370 | SELECT CASE ( cd_type ) |
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| 371 | |
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| 372 | CASE ( 'T' , 'W' ) ! T-, W-point |
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| 373 | DO ji = 1, jpi |
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| 374 | ijt = jpi-ji+1 |
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| 375 | pt2d(ji, 1 ) = 0.e0 |
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| 376 | pt2d(ji,jpj) = psgn * pt2d(ijt,jpj-1) |
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| 377 | END DO |
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| 378 | |
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| 379 | CASE ( 'U' ) ! U-point |
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| 380 | DO ji = 1, jpi-1 |
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| 381 | iju = jpi-ji |
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| 382 | pt2d(ji, 1 ) = 0.e0 |
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| 383 | pt2d(ji,jpj) = psgn * pt2d(iju,jpj-1) |
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| 384 | END DO |
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| 385 | |
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| 386 | CASE ( 'V' ) ! V-point |
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| 387 | DO ji = 1, jpi |
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| 388 | ijt = jpi-ji+1 |
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| 389 | pt2d(ji, 1 ) = 0.e0 |
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| 390 | pt2d(ji,jpj) = psgn * pt2d(ijt,jpj-2) |
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| 391 | END DO |
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| 392 | DO ji = jpi/2+1, jpi |
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| 393 | ijt = jpi-ji+1 |
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| 394 | pt2d(ji,jpjm1) = psgn * pt2d(ijt,jpjm1) |
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| 395 | END DO |
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| 396 | |
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| 397 | CASE ( 'F' ) ! F-point |
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| 398 | DO ji = 1, jpi-1 |
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| 399 | iju = jpi-ji |
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| 400 | pt2d(ji,jpj ) = pt2d(iju,jpj-2) |
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| 401 | END DO |
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| 402 | DO ji = jpi/2+1, jpi-1 |
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| 403 | iju = jpi-ji |
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| 404 | pt2d(ji,jpjm1) = pt2d(iju,jpjm1) |
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| 405 | END DO |
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| 406 | |
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| 407 | CASE ( 'I' ) ! ice U-V point |
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| 408 | pt2d( 2 ,jpj) = 0.e0 !!bug ??? |
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| 409 | DO ji = 1 , jpim1 !!bug rob= 2,jpim1 |
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| 410 | ijt = jpi - ji !!bug rob= ijt=jpi-ji+2 ??? |
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| 411 | pt2d(ji,jpj)= 0.5 * ( pt2d(ji,jpjm1) + psgn * pt2d(ijt,jpjm1) ) |
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| 412 | END DO |
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| 413 | |
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| 414 | END SELECT |
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| 415 | |
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| 416 | CASE DEFAULT ! * closed |
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| 417 | |
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| 418 | SELECT CASE ( cd_type ) |
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| 419 | |
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| 420 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 421 | pt2d(:, 1 ) = 0.e0 |
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| 422 | pt2d(:,jpj) = 0.e0 |
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| 423 | |
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| 424 | CASE ( 'F' ) ! F-point |
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| 425 | pt2d(:,jpj) = 0.e0 |
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| 426 | |
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| 427 | CASE ( 'I' ) ! ice U-V point |
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| 428 | pt2d(:, 1 ) = 0.e0 |
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| 429 | pt2d(:,jpj) = 0.e0 |
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| 430 | |
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| 431 | END SELECT |
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| 432 | |
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| 433 | END SELECT |
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| 434 | |
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| 435 | END SUBROUTINE lbc_lnk_2d |
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| 436 | |
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| 437 | #endif |
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| 438 | |
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| 439 | !!====================================================================== |
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| 440 | END MODULE lbclnk |
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