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C $Header: /u/gcmpack/MITgcm/model/src/ini_vertical_grid.F,v 1.18 2006/12/05 05:25:08 jmc Exp $ |
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C $Name: $ |
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#include "CPP_OPTIONS.h" |
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CBOP |
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C !ROUTINE: INI_VERTICAL_GRID |
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C !INTERFACE: |
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SUBROUTINE INI_VERTICAL_GRID( myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE INI_VERTICAL_GRID |
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C | o Initialise vertical gridding arrays |
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C *==========================================================* |
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C \ev |
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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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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C myThid :: my Thread Id number |
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INTEGER myThid |
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|
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C k :: loop index |
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C msgBuf :: Informational/error meesage buffer |
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INTEGER k |
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_RL tmpRatio, checkRatio1, checkRatio2 |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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CEOP |
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_BEGIN_MASTER(myThid) |
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WRITE(msgBuf,'(A,2(A,L5))') 'Enter INI_VERTICAL_GRID:', |
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& ' setInterFDr=', setInterFDr, |
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& ' ; setCenterDr=', setCenterDr |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
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|
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C-- Set factors required for mixing pressure and meters as vertical coordinate. |
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C rkSign is a "sign" parameter which is used where the orientation of the vertical |
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C coordinate (pressure or meters) relative to the vertical index (k) is important. |
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C rkSign = -1 applies when k and the coordinate are in the opposite sense. |
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C rkSign = 1 applies when k and the coordinate are in the same sense. |
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rkSign = -1. _d 0 |
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gravitySign = -1. _d 0 |
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IF ( usingPCoords ) THEN |
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gravitySign = 1. _d 0 |
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ENDIF |
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|
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IF ( .NOT.(setInterFDr.OR.setCenterDr) ) THEN |
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WRITE(msgBuf,'(A)') |
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& 'S/R INI_VERTICAL_GRID: neither delR nor delRc are defined' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE(msgBuf,'(A)') |
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& 'S/R INI_VERTICAL_GRID: Need at least 1 of the 2 (delR,delRc)' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R INI_VERTICAL_GRID' |
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ENDIF |
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|
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C--- Set Level r-thickness (drF) and Center r-distances (drC) |
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|
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IF (setInterFDr) THEN |
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C-- Interface r-distances are defined: |
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DO k=1,Nr |
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drF(k) = delR(k) |
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ENDDO |
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C- Check that all thickness are > 0 : |
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DO k=1,Nr |
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IF (delR(k).LE.0.) THEN |
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WRITE(msgBuf,'(A,I4,A,E16.8)') |
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& 'S/R INI_VERTICAL_GRID: delR(k=',k,' )=',delR(k) |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE(msgBuf,'(A)') |
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& 'S/R INI_VERTICAL_GRID: Vert. grid spacing MUST BE > 0' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R INI_VERTICAL_GRID' |
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ENDIF |
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ENDDO |
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ELSE |
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C-- Interface r-distances undefined: |
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C assume Interface at middle between 2 Center |
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drF(1) = delRc(1) |
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DO k=2,Nr |
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drF(k-1) = 0.5 _d 0 *delRc(k) + drF(k-1) |
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drF( k ) = 0.5 _d 0 *delRc(k) |
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ENDDO |
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drF(Nr) = delRc(Nr+1) + drF(Nr) |
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ENDIF |
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|
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IF (setCenterDr) THEN |
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C-- Cell Center r-distances are defined: |
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DO k=1,Nr |
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drC(k) = delRc(k) |
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ENDDO |
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C- Check that all thickness are > 0 : |
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DO k=1,Nr+1 |
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IF (delRc(k).LE.0.) THEN |
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WRITE(msgBuf,'(A,I4,A,E16.8)') |
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& 'S/R INI_VERTICAL_GRID: delRc(k=',k,' )=',delRc(k) |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE(msgBuf,'(A)') |
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& 'S/R INI_VERTICAL_GRID: Vert. grid spacing MUST BE > 0' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R INI_VERTICAL_GRID' |
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ENDIF |
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ENDDO |
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ELSE |
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C-- Cell Center r-distances undefined: |
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C assume Center at middle between 2 Interfaces |
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drC(1) = 0.5 _d 0 *delR(1) |
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DO k=2,Nr |
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drC(k) = 0.5 _d 0 *(delR(k-1)+delR(k)) |
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ENDDO |
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ENDIF |
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|
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C--- Set r-position of interFace (rF) and cell-Center (rC): |
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rF(1) = Ro_SeaLevel |
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DO k=1,Nr |
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rF(k+1) = rF(k) + rkSign*drF(k) |
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ENDDO |
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rC(1) = rF(1) + rkSign*drC(1) |
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DO k=2,Nr |
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rC(k) = rC(k-1) + rkSign*drC(k) |
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ENDDO |
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|
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C--- Check vertical discretization : |
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checkRatio2 = 100. |
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checkRatio1 = 1. _d 0 / checkRatio2 |
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DO k=1,Nr |
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tmpRatio = 0. |
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IF ( (rC(k)-rF(k+1)) .NE. 0. ) |
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& tmpRatio = (rF(k)-rC(k)) / (rC(k)-rF(k+1)) |
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IF ( tmpRatio.LT.checkRatio1 .OR. tmpRatio.GT.checkRatio2 ) THEN |
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c write(0,*) 'drF=',drF |
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c write(0,*) 'drC=',drC |
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c write(0,*) 'rF=',rF |
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c write(0,*) 'rC=',rC |
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WRITE(msgBuf,'(A,I4,A,E16.8)') |
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& 'S/R INI_VERTICAL_GRID: Invalid relative position, level k=', |
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& k, ' :', tmpRatio |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE(msgBuf,'(A,1PE14.6,A,2E14.6)') |
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& 'S/R INI_VERTICAL_GRID: rC=', rC(k), |
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& ' , rF(k,k+1)=',rF(k),rF(k+1) |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R INI_VERTICAL_GRID' |
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ENDIF |
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ENDDO |
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C- Calculate reciprol vertical grid spacing : |
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DO k=1,Nr |
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recip_drC(k) = 1. _d 0/drC(k) |
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recip_drF(k) = 1. _d 0/drF(k) |
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ENDDO |
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_END_MASTER(myThid) |
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_BARRIER |
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RETURN |
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END |
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