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C $Header: /u/gcmpack/MITgcm/verification/advect_xz/code/ini_depths.F,v 1.3 2005/06/22 00:18:48 jmc Exp $ |
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C $Name: $ |
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|
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#include "CPP_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: INI_DEPTHS |
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C !INTERFACE: |
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SUBROUTINE INI_DEPTHS( myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE INI_DEPTHS |
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C | o define R_position of Lower and Surface Boundaries |
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C *==========================================================* |
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C |atmosphere orography: |
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C | define either in term of P_topo or converted from Z_topo |
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C |ocean bathymetry: |
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C | The depths of the bottom of the model is specified in |
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C | terms of an XY map with one depth for each column of |
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C | grid cells. Depths do not have to coincide with the |
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C | model levels. The model lopping algorithm makes it |
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C | possible to represent arbitrary depths. |
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C | The mode depths map also influences the models topology |
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C | By default the model domain wraps around in X and Y. |
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C | This default doubly periodic topology is "supressed" |
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C | if a depth map is defined which closes off all wrap |
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C | around flow. |
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C *==========================================================* |
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C \ev |
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|
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C !USES: |
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IMPLICIT NONE |
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C === Global variables === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "SURFACE.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C myThid - Number of this instance of INI_DEPTHS |
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INTEGER myThid |
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CEndOfInterface |
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|
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C iG, jG - Global coordinate index |
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C bi,bj - Tile indices |
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C I,J,K - Loop counters |
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C oldPrec - Temporary used in controlling binary input dataset precision |
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C msgBuf - Informational/error meesage buffer |
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INTEGER iG, jG |
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INTEGER bi, bj |
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INTEGER I, J |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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CEOP |
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|
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IF (usingPCoords .AND. bathyFile .NE. ' ' |
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& .AND. topoFile .NE. ' ' ) THEN |
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WRITE(msgBuf,'(A,A)') |
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& 'S/R INI_DEPTHS: both bathyFile & topoFile are specified:', |
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& ' select the right one !' |
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CALL PRINT_ERROR( msgBuf , myThid) |
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STOP 'ABNORMAL END: S/R INI_DEPTHS' |
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ENDIF |
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|
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C------ |
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C 0) Initialize R_low and Ro_surf (define an empty domain) |
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C------ |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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R_low(i,j,bi,bj) = 0. |
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Ro_surf(i,j,bi,bj) = 0. |
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topoZ(i,j,bi,bj) = 0. |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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C------ |
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C 1) Set R_low = the Lower (in r sense) boundary of the fluid column : |
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C------ |
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IF (usingPCoords .OR. bathyFile .EQ. ' ') THEN |
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C- e.g., atmosphere : R_low = Top of atmosphere |
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C- ocean : R_low = Bottom |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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R_low(i,j,bi,bj) = rF(Nr+1) |
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C-- Specific modif for this experiment (advect_xz): |
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R_low(I,J,bi,bj) = R_low(I,J,bi,bj) |
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& *(1.-0.5*XC(I,J,bi,bj)/(float(Nx)*DelX(1))) |
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C-- end of modified part |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ELSE |
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_BEGIN_MASTER( myThid ) |
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C Read the bathymetry using the mid-level I/O pacakage read_write_rec |
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C The 0 is the "iteration" argument. The 1 is the record number. |
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CALL READ_REC_XY_RS( bathyFile, R_low, 1, 0, myThid ) |
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C Read the bathymetry using the mid-level I/O pacakage read_write_fld |
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C The 0 is the "iteration" argument. The ' ' is an empty suffix |
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c CALL READ_FLD_XY_RS( bathyFile, ' ', R_low, 0, myThid ) |
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C Read the bathymetry using the low-level I/O package |
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c CALL MDSREADFIELD( bathyFile, readBinaryPrec, |
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c & 'RS', 1, R_low, 1, myThid ) |
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_END_MASTER(myThid) |
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|
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ENDIF |
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C- end setup R_low in the interior |
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|
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C- fill in the overlap : |
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_EXCH_XY_R4(R_low, myThid ) |
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|
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c CALL PLOT_FIELD_XYRS(R_low,'Bottom depths (ini_depths)',1,myThid) |
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c _BEGIN_MASTER( myThid ) |
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c CALL WRITE_FLD_XY_RS( 'R_low' ,' ', R_low, 0,myThid) |
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c _END_MASTER(myThid) |
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|
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c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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C------ |
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C 2) Set R_surf = Surface boundary: ocean surface / ground for the atmosphere |
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C------ |
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|
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IF ( usingPCoords .AND. bathyFile.NE.' ' ) THEN |
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C------ read directly Po_surf from bathyFile (only for backward compatibility) |
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|
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_BEGIN_MASTER( myThid ) |
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CALL READ_REC_XY_RS( bathyFile, Ro_surf, 1, 0, myThid ) |
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_END_MASTER(myThid) |
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_BARRIER |
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|
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ELSEIF ( topoFile.EQ.' ' ) THEN |
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C------ set default value: |
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|
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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Ro_surf(i,j,bi,bj) = Ro_SeaLevel |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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ELSE |
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C------ read from file: |
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|
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C- read surface topography (in m) from topoFile (case topoFile.NE.' '): |
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_BEGIN_MASTER( myThid ) |
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CALL READ_REC_XY_RS( topoFile, topoZ, 1, 0, myThid ) |
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_END_MASTER(myThid) |
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_BARRIER |
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|
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IF (buoyancyRelation .EQ. 'ATMOSPHERIC') THEN |
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C---- |
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C Convert Surface Geopotential to (reference) Surface Pressure |
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C according to Tref profile, using same discretisation as in calc_phi_hyd |
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C---- |
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c _BEGIN_MASTER( myThid ) |
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c CALL WRITE_FLD_XY_RS( 'topo_Z',' ',topoZ,0,myThid) |
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c _END_MASTER(myThid) |
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|
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CALL INI_P_GROUND( 2, topoZ, |
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O Ro_surf, |
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I myThid ) |
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|
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_BARRIER |
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C This I/O is now done in write_grid.F |
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c _BEGIN_MASTER( myThid ) |
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c CALL WRITE_FLD_XY_RS( 'topo_P',' ',Ro_surf,0,myThid) |
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c _END_MASTER(myThid) |
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|
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ELSE |
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C---- |
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C Direct Transfer to Ro_surf (e.g., to specify upper ocean boundary |
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C below an ice-shelf - NOTE - actually not yet implemented ) |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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Ro_surf(i,j,bi,bj) = topoZ(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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ENDIF |
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|
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C------ end case "read topoFile" |
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ENDIF |
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|
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C----- fill in the overlap : |
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_EXCH_XY_R4(Ro_surf, myThid ) |
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|
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c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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C------ |
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C 3) Close the Domain (special configuration). |
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C------ |
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IF (usingPCoords) THEN |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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iG = myXGlobalLo-1+(bi-1)*sNx+I |
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jG = myYGlobalLo-1+(bj-1)*sNy+J |
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C Test for eastern edge |
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c IF ( iG .EQ. Nx ) Ro_surf(i,j,bi,bj) = 0. |
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C Test for northern edge |
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c IF ( jG .EQ. Ny ) Ro_surf(i,j,bi,bj) = 0. |
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IF (usingSphericalPolarGrid .AND. abs(yC(I,J,bi,bj)).GE.90. ) |
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& Ro_surf(I,J,bi,bj) = rF(Nr+1) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ELSE |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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iG = myXGlobalLo-1+(bi-1)*sNx+I |
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jG = myYGlobalLo-1+(bj-1)*sNy+J |
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C Test for eastern edge |
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c IF ( iG .EQ. Nx ) R_low(i,j,bi,bj) = 0. |
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C Test for northern edge |
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c IF ( jG .EQ. Ny ) R_low(i,j,bi,bj) = 0. |
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IF (usingSphericalPolarGrid .AND. abs(yC(I,J,bi,bj)).GE.90. ) |
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& R_low(I,J,bi,bj) = Ro_SeaLevel |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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c _BEGIN_MASTER( myThid ) |
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c CALL WRITE_FLD_XY_RS('Ro_surf',' ',Ro_surf,0,myThid) |
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c _END_MASTER(myThid) |
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|
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RETURN |
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END |
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