| 1 | MODULE lbclnk |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE lbclnk *** |
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| 4 | !! Ocean : lateral boundary conditions |
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| 5 | !!===================================================================== |
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| 6 | !! History : OPA ! 1997-06 (G. Madec) Original code |
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| 7 | !! NEMO 1.0 ! 2002-09 (G. Madec) F90: Free form and module |
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| 8 | !! 3.2 ! 2009-03 (R. Benshila) External north fold treatment |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | #if defined key_mpp_mpi |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | !! 'key_mpp_mpi' MPI massively parallel processing library |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! lbc_lnk : generic interface for mpp_lnk_3d and mpp_lnk_2d routines defined in lib_mpp |
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| 15 | !! lbc_lnk_e : generic interface for mpp_lnk_2d_e routine defined in lib_mpp |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE lib_mpp ! distributed memory computing library |
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| 18 | |
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| 19 | INTERFACE lbc_lnk |
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| 20 | MODULE PROCEDURE mpp_lnk_3d_gather, mpp_lnk_3d, mpp_lnk_2d |
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| 21 | END INTERFACE |
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| 22 | |
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| 23 | INTERFACE lbc_lnk_e |
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| 24 | MODULE PROCEDURE mpp_lnk_2d_e |
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| 25 | END INTERFACE |
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| 26 | |
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| 27 | PUBLIC lbc_lnk ! ocean lateral boundary conditions |
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| 28 | PUBLIC lbc_lnk_e |
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| 29 | |
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| 30 | !!---------------------------------------------------------------------- |
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| 31 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 32 | !! $Id$ |
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| 33 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 34 | !!---------------------------------------------------------------------- |
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| 35 | |
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| 36 | #else |
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| 37 | !!---------------------------------------------------------------------- |
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| 38 | !! Default option shared memory computing |
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| 39 | !!---------------------------------------------------------------------- |
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| 40 | !! lbc_lnk : generic interface for lbc_lnk_3d and lbc_lnk_2d |
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| 41 | !! lbc_lnk_3d : set the lateral boundary condition on a 3D variable on ocean mesh |
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| 42 | !! lbc_lnk_2d : set the lateral boundary condition on a 2D variable on ocean mesh |
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| 43 | !!---------------------------------------------------------------------- |
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| 44 | USE oce ! ocean dynamics and tracers |
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| 45 | USE dom_oce ! ocean space and time domain |
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| 46 | USE in_out_manager ! I/O manager |
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| 47 | USE lbcnfd ! north fold |
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| 48 | |
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| 49 | IMPLICIT NONE |
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| 50 | PRIVATE |
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| 51 | |
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| 52 | INTERFACE lbc_lnk |
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| 53 | MODULE PROCEDURE lbc_lnk_3d_gather, lbc_lnk_3d, lbc_lnk_2d |
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| 54 | END INTERFACE |
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| 55 | |
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| 56 | INTERFACE lbc_lnk_e |
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| 57 | MODULE PROCEDURE lbc_lnk_2d |
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| 58 | END INTERFACE |
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| 59 | |
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| 60 | PUBLIC lbc_lnk ! ocean/ice lateral boundary conditions |
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| 61 | PUBLIC lbc_lnk_e |
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| 62 | |
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| 63 | !!---------------------------------------------------------------------- |
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| 64 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 65 | !! $Id$ |
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| 66 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 67 | !!---------------------------------------------------------------------- |
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| 68 | CONTAINS |
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| 69 | |
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| 70 | SUBROUTINE lbc_lnk_3d_gather( pt3d1, cd_type1, pt3d2, cd_type2, psgn ) |
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| 71 | !!--------------------------------------------------------------------- |
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| 72 | !! *** ROUTINE lbc_lnk_3d_gather *** |
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| 73 | !! |
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| 74 | !! ** Purpose : set lateral boundary conditions on two 3D arrays (non mpp case) |
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| 75 | !! |
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| 76 | !! ** Method : psign = -1 : change the sign across the north fold |
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| 77 | !! = 1 : no change of the sign across the north fold |
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| 78 | !! = 0 : no change of the sign across the north fold and |
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| 79 | !! strict positivity preserved: use inner row/column |
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| 80 | !! for closed boundaries. |
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| 81 | !!---------------------------------------------------------------------- |
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| 82 | CHARACTER(len=1) , INTENT(in ) :: cd_type1, cd_type2 ! nature of pt3d grid-points |
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| 83 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(inout) :: pt3d1 , pt3d2 ! 3D array on which the lbc is applied |
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| 84 | REAL(wp) , INTENT(in ) :: psgn ! control of the sign |
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| 85 | !!---------------------------------------------------------------------- |
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| 86 | ! |
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| 87 | CALL lbc_lnk_3d( pt3d1, cd_type1, psgn) |
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| 88 | CALL lbc_lnk_3d( pt3d2, cd_type2, psgn) |
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| 89 | ! |
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| 90 | END SUBROUTINE lbc_lnk_3d_gather |
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| 91 | |
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| 92 | |
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| 93 | SUBROUTINE lbc_lnk_3d( pt3d, cd_type, psgn, cd_mpp, pval ) |
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| 94 | !!--------------------------------------------------------------------- |
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| 95 | !! *** ROUTINE lbc_lnk_3d *** |
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| 96 | !! |
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| 97 | !! ** Purpose : set lateral boundary conditions on a 3D array (non mpp case) |
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| 98 | !! |
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| 99 | !! ** Method : psign = -1 : change the sign across the north fold |
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| 100 | !! = 1 : no change of the sign across the north fold |
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| 101 | !! = 0 : no change of the sign across the north fold and |
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| 102 | !! strict positivity preserved: use inner row/column |
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| 103 | !! for closed boundaries. |
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| 104 | !!---------------------------------------------------------------------- |
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| 105 | CHARACTER(len=1) , INTENT(in ) :: cd_type ! nature of pt3d grid-points |
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| 106 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(inout) :: pt3d ! 3D array on which the lbc is applied |
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| 107 | REAL(wp) , INTENT(in ) :: psgn ! control of the sign |
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| 108 | CHARACTER(len=3) , INTENT(in ), OPTIONAL :: cd_mpp ! MPP only (here do nothing) |
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| 109 | REAL(wp) , INTENT(in ), OPTIONAL :: pval ! background value (for closed boundaries) |
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| 110 | !! |
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| 111 | REAL(wp) :: zland |
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| 112 | !!---------------------------------------------------------------------- |
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| 113 | |
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| 114 | IF( PRESENT( pval ) ) THEN ; zland = pval ! set land value (zero by default) |
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| 115 | ELSE ; zland = 0.e0 |
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| 116 | ENDIF |
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| 117 | |
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| 118 | |
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| 119 | IF( PRESENT( cd_mpp ) ) THEN |
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| 120 | ! only fill the overlap area and extra allows |
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| 121 | ! this is in mpp case. In this module, just do nothing |
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| 122 | ELSE |
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| 123 | ! |
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| 124 | ! ! East-West boundaries |
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| 125 | ! ! ====================== |
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| 126 | SELECT CASE ( nperio ) |
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| 127 | ! |
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| 128 | CASE ( 1 , 4 , 6 ) !** cyclic east-west |
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| 129 | pt3d( 1 ,:,:) = pt3d(jpim1,:,:) ! all points |
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| 130 | pt3d(jpi,:,:) = pt3d( 2 ,:,:) |
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| 131 | ! |
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| 132 | CASE DEFAULT !** East closed -- West closed |
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| 133 | SELECT CASE ( cd_type ) |
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| 134 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 135 | pt3d( 1 ,:,:) = zland |
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| 136 | pt3d(jpi,:,:) = zland |
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| 137 | CASE ( 'F' ) ! F-point |
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| 138 | pt3d(jpi,:,:) = zland |
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| 139 | END SELECT |
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| 140 | ! |
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| 141 | END SELECT |
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| 142 | ! |
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| 143 | ! ! North-South boundaries |
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| 144 | ! ! ====================== |
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| 145 | SELECT CASE ( nperio ) |
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| 146 | ! |
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| 147 | CASE ( 2 ) !** South symmetric -- North closed |
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| 148 | SELECT CASE ( cd_type ) |
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| 149 | CASE ( 'T' , 'U' , 'W' ) ! T-, U-, W-points |
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| 150 | pt3d(:, 1 ,:) = pt3d(:,3,:) |
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| 151 | pt3d(:,jpj,:) = zland |
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| 152 | CASE ( 'V' , 'F' ) ! V-, F-points |
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| 153 | pt3d(:, 1 ,:) = psgn * pt3d(:,2,:) |
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| 154 | pt3d(:,jpj,:) = zland |
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| 155 | END SELECT |
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| 156 | ! |
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| 157 | CASE ( 3 , 4 , 5 , 6 ) !** North fold T or F-point pivot -- South closed |
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| 158 | SELECT CASE ( cd_type ) ! South : closed |
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| 159 | CASE ( 'T' , 'U' , 'V' , 'W' , 'I' ) ! all points except F-point |
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| 160 | pt3d(:, 1 ,:) = zland |
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| 161 | END SELECT |
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| 162 | ! ! North fold |
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| 163 | pt3d( 1 ,jpj,:) = zland |
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| 164 | pt3d(jpi,jpj,:) = zland |
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| 165 | CALL lbc_nfd( pt3d(:,:,:), cd_type, psgn ) |
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| 166 | ! |
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| 167 | CASE DEFAULT !** North closed -- South closed |
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| 168 | SELECT CASE ( cd_type ) |
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| 169 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 170 | pt3d(:, 1 ,:) = zland |
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| 171 | pt3d(:,jpj,:) = zland |
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| 172 | CASE ( 'F' ) ! F-point |
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| 173 | pt3d(:,jpj,:) = zland |
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| 174 | END SELECT |
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| 175 | ! |
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| 176 | END SELECT |
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| 177 | ! |
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| 178 | ENDIF |
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| 179 | ! |
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| 180 | END SUBROUTINE lbc_lnk_3d |
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| 181 | |
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| 182 | |
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| 183 | SUBROUTINE lbc_lnk_2d( pt2d, cd_type, psgn, cd_mpp, pval ) |
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| 184 | !!--------------------------------------------------------------------- |
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| 185 | !! *** ROUTINE lbc_lnk_2d *** |
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| 186 | !! |
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| 187 | !! ** Purpose : set lateral boundary conditions on a 2D array (non mpp case) |
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| 188 | !! |
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| 189 | !! ** Method : psign = -1 : change the sign across the north fold |
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| 190 | !! = 1 : no change of the sign across the north fold |
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| 191 | !! = 0 : no change of the sign across the north fold and |
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| 192 | !! strict positivity preserved: use inner row/column |
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| 193 | !! for closed boundaries. |
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| 194 | !!---------------------------------------------------------------------- |
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| 195 | CHARACTER(len=1) , INTENT(in ) :: cd_type ! nature of pt3d grid-points |
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| 196 | REAL(wp), DIMENSION(jpi,jpj), INTENT(inout) :: pt2d ! 2D array on which the lbc is applied |
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| 197 | REAL(wp) , INTENT(in ) :: psgn ! control of the sign |
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| 198 | CHARACTER(len=3) , INTENT(in ), OPTIONAL :: cd_mpp ! MPP only (here do nothing) |
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| 199 | REAL(wp) , INTENT(in ), OPTIONAL :: pval ! background value (for closed boundaries) |
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| 200 | !! |
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| 201 | REAL(wp) :: zland |
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| 202 | !!---------------------------------------------------------------------- |
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| 203 | |
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| 204 | IF( PRESENT( pval ) ) THEN ; zland = pval ! set land value (zero by default) |
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| 205 | ELSE ; zland = 0.e0 |
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| 206 | ENDIF |
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| 207 | |
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| 208 | IF (PRESENT(cd_mpp)) THEN |
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| 209 | ! only fill the overlap area and extra allows |
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| 210 | ! this is in mpp case. In this module, just do nothing |
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| 211 | ELSE |
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| 212 | ! |
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| 213 | ! ! East-West boundaries |
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| 214 | ! ! ==================== |
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| 215 | SELECT CASE ( nperio ) |
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| 216 | ! |
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| 217 | CASE ( 1 , 4 , 6 ) !** cyclic east-west |
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| 218 | pt2d( 1 ,:) = pt2d(jpim1,:) ! all points |
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| 219 | pt2d(jpi,:) = pt2d( 2 ,:) |
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| 220 | ! |
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| 221 | CASE DEFAULT !** East closed -- West closed |
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| 222 | SELECT CASE ( cd_type ) |
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| 223 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 224 | pt2d( 1 ,:) = zland |
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| 225 | pt2d(jpi,:) = zland |
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| 226 | CASE ( 'F' ) ! F-point |
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| 227 | pt2d(jpi,:) = zland |
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| 228 | END SELECT |
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| 229 | ! |
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| 230 | END SELECT |
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| 231 | ! |
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| 232 | ! ! North-South boundaries |
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| 233 | ! ! ====================== |
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| 234 | SELECT CASE ( nperio ) |
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| 235 | ! |
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| 236 | CASE ( 2 ) !** South symmetric -- North closed |
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| 237 | SELECT CASE ( cd_type ) |
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| 238 | CASE ( 'T' , 'U' , 'W' ) ! T-, U-, W-points |
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| 239 | pt2d(:, 1 ) = pt2d(:,3) |
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| 240 | pt2d(:,jpj) = zland |
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| 241 | CASE ( 'V' , 'F' ) ! V-, F-points |
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| 242 | pt2d(:, 1 ) = psgn * pt2d(:,2) |
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| 243 | pt2d(:,jpj) = zland |
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| 244 | END SELECT |
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| 245 | ! |
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| 246 | CASE ( 3 , 4 , 5 , 6 ) !** North fold T or F-point pivot -- South closed |
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| 247 | SELECT CASE ( cd_type ) ! South : closed |
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| 248 | CASE ( 'T' , 'U' , 'V' , 'W' , 'I' ) ! all points except F-point |
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| 249 | pt2d(:, 1 ) = zland |
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| 250 | END SELECT |
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| 251 | ! ! North fold |
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| 252 | pt2d( 1 ,1 ) = zland |
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| 253 | pt2d( 1 ,jpj) = zland |
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| 254 | pt2d(jpi,jpj) = zland |
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| 255 | CALL lbc_nfd( pt2d(:,:), cd_type, psgn ) |
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| 256 | ! |
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| 257 | CASE DEFAULT !** North closed -- South closed |
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| 258 | SELECT CASE ( cd_type ) |
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| 259 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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| 260 | pt2d(:, 1 ) = zland |
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| 261 | pt2d(:,jpj) = zland |
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| 262 | CASE ( 'F' ) ! F-point |
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| 263 | pt2d(:,jpj) = zland |
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| 264 | END SELECT |
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| 265 | ! |
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| 266 | END SELECT |
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| 267 | ! |
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| 268 | ENDIF |
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| 269 | ! |
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| 270 | END SUBROUTINE lbc_lnk_2d |
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| 271 | |
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| 272 | #endif |
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| 273 | |
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| 274 | !!====================================================================== |
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| 275 | END MODULE lbclnk |
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