| 1 | MODULE dommsk |
|---|
| 2 | !!============================================================================== |
|---|
| 3 | !! *** MODULE dommsk *** |
|---|
| 4 | !! Ocean initialization : domain land/sea mask |
|---|
| 5 | !!============================================================================== |
|---|
| 6 | |
|---|
| 7 | !!---------------------------------------------------------------------- |
|---|
| 8 | !! dom_msk : compute land/ocean mask |
|---|
| 9 | !!---------------------------------------------------------------------- |
|---|
| 10 | !! * Modules used |
|---|
| 11 | USE oce ! ocean dynamics and tracers |
|---|
| 12 | USE dom_oce ! ocean space and time domain |
|---|
| 13 | USE in_out_manager ! I/O manager |
|---|
| 14 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
|---|
| 15 | USE lib_mpp |
|---|
| 16 | |
|---|
| 17 | IMPLICIT NONE |
|---|
| 18 | PRIVATE |
|---|
| 19 | |
|---|
| 20 | !! * Routine accessibility |
|---|
| 21 | PUBLIC dom_msk ! routine called by inidom.F90 |
|---|
| 22 | |
|---|
| 23 | !! * Substitutions |
|---|
| 24 | # include "vectopt_loop_substitute.h90" |
|---|
| 25 | !!--------------------------------------------------------------------------------- |
|---|
| 26 | !! OPA 9.0 , LODYC-IPSL (2003) |
|---|
| 27 | !!--------------------------------------------------------------------------------- |
|---|
| 28 | |
|---|
| 29 | CONTAINS |
|---|
| 30 | |
|---|
| 31 | SUBROUTINE dom_msk |
|---|
| 32 | !!--------------------------------------------------------------------- |
|---|
| 33 | !! *** ROUTINE dom_msk *** |
|---|
| 34 | !! |
|---|
| 35 | !! ** Purpose : Compute land/ocean mask arrays at tracer points, hori- |
|---|
| 36 | !! zontal velocity points (u & v), vorticity points (f) and baro- |
|---|
| 37 | !! tropic stream function points (b). |
|---|
| 38 | !! Set mbathy to the number of non-zero w-levels of a water column |
|---|
| 39 | !! (if island in the domain (lk_isl=T), this is done latter in |
|---|
| 40 | !! routine solver_init) |
|---|
| 41 | !! |
|---|
| 42 | !! ** Method : The ocean/land mask is computed from the basin bathy- |
|---|
| 43 | !! metry in level (mbathy) which is defined or read in dommba. |
|---|
| 44 | !! mbathy equals 0 over continental T-point, -n over the nth |
|---|
| 45 | !! island T-point, and the number of ocean level over the ocean. |
|---|
| 46 | !! |
|---|
| 47 | !! At a given position (ji,jj,jk) the ocean/land mask is given by: |
|---|
| 48 | !! t-point : 0. IF mbathy( ji ,jj) =< 0 |
|---|
| 49 | !! 1. IF mbathy( ji ,jj) >= jk |
|---|
| 50 | !! u-point : 0. IF mbathy( ji ,jj) or mbathy(ji+1, jj ) =< 0 |
|---|
| 51 | !! 1. IF mbathy( ji ,jj) and mbathy(ji+1, jj ) >= jk. |
|---|
| 52 | !! v-point : 0. IF mbathy( ji ,jj) or mbathy( ji ,jj+1) =< 0 |
|---|
| 53 | !! 1. IF mbathy( ji ,jj) and mbathy( ji ,jj+1) >= jk. |
|---|
| 54 | !! f-point : 0. IF mbathy( ji ,jj) or mbathy( ji ,jj+1) |
|---|
| 55 | !! or mbathy(ji+1,jj) or mbathy(ji+1,jj+1) =< 0 |
|---|
| 56 | !! 1. IF mbathy( ji ,jj) and mbathy( ji ,jj+1) |
|---|
| 57 | !! and mbathy(ji+1,jj) and mbathy(ji+1,jj+1) >= jk. |
|---|
| 58 | !! b-point : the same definition as for f-point of the first ocean |
|---|
| 59 | !! level (surface level) but with 0 along coastlines. |
|---|
| 60 | !! |
|---|
| 61 | !! The lateral friction is set through the value of fmask along |
|---|
| 62 | !! the coast and topography. This value is defined by shlat, a |
|---|
| 63 | !! namelist parameter: |
|---|
| 64 | !! shlat = 0, free slip (no shear along the coast) |
|---|
| 65 | !! shlat = 2, no slip (specified zero velocity at the coast) |
|---|
| 66 | !! 0 < shlat < 2, partial slip | non-linear velocity profile |
|---|
| 67 | !! 2 < shlat, strong slip | in the lateral boundary layer |
|---|
| 68 | !! |
|---|
| 69 | !! N.B. If nperio not equal to 0, the land/ocean mask arrays |
|---|
| 70 | !! are defined with the proper value at lateral domain boundaries, |
|---|
| 71 | !! but bmask. indeed, bmask defined the domain over which the |
|---|
| 72 | !! barotropic stream function is computed. this domain cannot |
|---|
| 73 | !! contain identical columns because the matrix associated with |
|---|
| 74 | !! the barotropic stream function equation is then no more inverti- |
|---|
| 75 | !! ble. therefore bmask is set to 0 along lateral domain boundaries |
|---|
| 76 | !! even IF nperio is not zero. |
|---|
| 77 | !! |
|---|
| 78 | !! In case of open boundaries (lk_obc=T): |
|---|
| 79 | !! - tmask is set to 1 on the points to be computed bay the open |
|---|
| 80 | !! boundaries routines. |
|---|
| 81 | !! - bmask is set to 0 on the open boundaries. |
|---|
| 82 | !! |
|---|
| 83 | !! Set mbathy to the number of non-zero w-levels of a water column |
|---|
| 84 | !! mbathy = min( mbathy, 1 ) + 1 |
|---|
| 85 | !! (note that the minimum value of mbathy is 2). |
|---|
| 86 | !! |
|---|
| 87 | !! ** Action : |
|---|
| 88 | !! tmask : land/ocean mask at t-point (=0. or 1.) |
|---|
| 89 | !! umask : land/ocean mask at u-point (=0. or 1.) |
|---|
| 90 | !! vmask : land/ocean mask at v-point (=0. or 1.) |
|---|
| 91 | !! fmask : land/ocean mask at f-point (=0. or 1.) |
|---|
| 92 | !! =shlat along lateral boundaries |
|---|
| 93 | !! bmask : land/ocean mask at barotropic stream |
|---|
| 94 | !! function point (=0. or 1.) and set to |
|---|
| 95 | !! 0 along lateral boundaries |
|---|
| 96 | !! mbathy : number of non-zero w-levels |
|---|
| 97 | !! |
|---|
| 98 | !! History : |
|---|
| 99 | !! ! 87-07 (G. Madec) Original code |
|---|
| 100 | !! ! 91-12 (G. Madec) |
|---|
| 101 | !! ! 92-06 (M. Imbard) |
|---|
| 102 | !! ! 93-03 (M. Guyon) symetrical conditions (M. Guyon) |
|---|
| 103 | !! ! 96-01 (G. Madec) suppression of common work arrays |
|---|
| 104 | !! ! 96-05 (G. Madec) mask computed from tmask and sup- |
|---|
| 105 | !! pression of the double computation of bmask |
|---|
| 106 | !! ! 97-02 (G. Madec) mesh information put in domhgr.F |
|---|
| 107 | !! ! 97-07 (G. Madec) modification of mbathy and fmask |
|---|
| 108 | !! ! 98-05 (G. Roullet) free surface |
|---|
| 109 | !! ! 00-03 (G. Madec) no slip accurate |
|---|
| 110 | !! ! 01-09 (J.-M. Molines) Open boundaries |
|---|
| 111 | !! 8.5 ! 02-08 (G. Madec) F90: Free form and module |
|---|
| 112 | !!---------------------------------------------------------------------- |
|---|
| 113 | !! *Local declarations |
|---|
| 114 | INTEGER :: ji, jk ! dummy loop indices |
|---|
| 115 | INTEGER :: iif, iil, ijf, ijl |
|---|
| 116 | INTEGER, DIMENSION(jpi,jpj) :: imsk |
|---|
| 117 | |
|---|
| 118 | !!--------------------------------------------------------------------- |
|---|
| 119 | |
|---|
| 120 | |
|---|
| 121 | |
|---|
| 122 | ! Interior domain mask (used for global sum) |
|---|
| 123 | ! -------------------- |
|---|
| 124 | |
|---|
| 125 | tmask_i(:,:) = tmask(:,:,1) |
|---|
| 126 | iif = jpreci ! ??? |
|---|
| 127 | iil = nlci - jpreci + 1 |
|---|
| 128 | ijf = jprecj ! ??? |
|---|
| 129 | ijl = nlcj - jprecj + 1 |
|---|
| 130 | |
|---|
| 131 | tmask_i( 1 :iif, : ) = 0.e0 ! first columns |
|---|
| 132 | tmask_i(iil:jpi, : ) = 0.e0 ! last columns (including mpp extra columns) |
|---|
| 133 | tmask_i( : , 1 :ijf) = 0.e0 ! first rows |
|---|
| 134 | tmask_i( : ,ijl:jpj) = 0.e0 ! last rows (including mpp extra rows) |
|---|
| 135 | |
|---|
| 136 | |
|---|
| 137 | ! north fold mask |
|---|
| 138 | tpol(1:jpiglo) = 1.e0 |
|---|
| 139 | IF( jperio == 3 .OR. jperio == 4 ) THEN ! T-point pivot |
|---|
| 140 | tpol(jpiglo/2+1:jpiglo) = 0.e0 |
|---|
| 141 | ENDIF |
|---|
| 142 | IF( jperio == 5 .OR. jperio == 6 ) THEN ! F-point pivot |
|---|
| 143 | tpol( 1 :jpiglo) = 0.e0 |
|---|
| 144 | ENDIF |
|---|
| 145 | |
|---|
| 146 | IF( jperio == 3 .OR. jperio == 4 ) THEN ! T-point pivot: only half of the nlcj-1 row |
|---|
| 147 | if (mjg(ijl-1) == jpjglo-1) then |
|---|
| 148 | DO ji = iif+1, iil-1 |
|---|
| 149 | tmask_i(ji,ijl-1) = tmask_i(ji,ijl-1) * tpol(mig(ji)) |
|---|
| 150 | END DO |
|---|
| 151 | endif |
|---|
| 152 | ENDIF |
|---|
| 153 | |
|---|
| 154 | ! Control print |
|---|
| 155 | ! ------------- |
|---|
| 156 | IF( nprint == 1 .AND. lwp ) THEN |
|---|
| 157 | imsk(:,:) = INT( tmask_i(:,:) ) |
|---|
| 158 | WRITE(numout,*) ' tmask_i : ' |
|---|
| 159 | CALL prihin( imsk(:,:), jpi, jpj, 1, jpi, 1, & |
|---|
| 160 | & 1, jpj, 1, 1, numout) |
|---|
| 161 | WRITE (numout,*) |
|---|
| 162 | WRITE (numout,*) ' dommsk: tmask for each level' |
|---|
| 163 | WRITE (numout,*) ' ----------------------------' |
|---|
| 164 | DO jk = 1, jpk |
|---|
| 165 | imsk(:,:) = INT( tmask(:,:,jk) ) |
|---|
| 166 | |
|---|
| 167 | WRITE(numout,*) |
|---|
| 168 | WRITE(numout,*) ' level = ',jk |
|---|
| 169 | CALL prihin( imsk(:,:), jpi, jpj, 1, jpi, 1, & |
|---|
| 170 | & 1, jpj, 1, 1, numout) |
|---|
| 171 | END DO |
|---|
| 172 | ENDIF |
|---|
| 173 | |
|---|
| 174 | END SUBROUTINE dom_msk |
|---|
| 175 | |
|---|
| 176 | END MODULE dommsk |
|---|
