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C $Header: /u/gcmpack/MITgcm/model/src/ini_masks_etc.F,v 1.32 2006/07/23 23:32:33 jmc Exp $ |
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C $Name: $ |
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|
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: INI_MASKS_ETC |
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C !INTERFACE: |
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SUBROUTINE INI_MASKS_ETC( myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE INI_MASKS_ETC |
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C | o Initialise masks and topography factors |
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C *==========================================================* |
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C | These arrays are used throughout the code and describe |
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C | the topography of the domain through masks (0s and 1s) |
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C | and fractional height factors (0<hFac<1). The latter |
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C | distinguish between the lopped-cell and full-step |
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C | topographic representations. |
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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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#ifdef ALLOW_SHELFICE |
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# include "SHELFICE.h" |
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#endif /* ALLOW_SHELFICE */ |
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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_MASKS_ETC |
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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 bi,bj :: tile indices |
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C I,J,K :: Loop counters |
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C tmpfld :: Temporary array used to compute & write Total Depth |
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_RS tmpfld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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INTEGER bi, bj |
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INTEGER I, J, K |
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_RL hFacCtmp |
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_RL hFacMnSz |
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_RL tileArea |
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CEOP |
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|
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C- Calculate lopping factor hFacC : over-estimate the part inside of the domain |
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C taking into account the lower_R Boundary (Bathymetrie / Top of Atmos) |
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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 K=1, Nr |
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hFacMnSz=max( hFacMin, min(hFacMinDr*recip_drF(k),1. _d 0) ) |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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C o Non-dimensional distance between grid bound. and domain lower_R bound. |
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hFacCtmp = (rF(K)-R_low(I,J,bi,bj))*recip_drF(K) |
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C o Select between, closed, open or partial (0,1,0-1) |
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hFacCtmp=min( max( hFacCtmp, 0. _d 0) , 1. _d 0) |
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C o Impose minimum fraction and/or size (dimensional) |
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IF (hFacCtmp.LT.hFacMnSz) THEN |
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IF (hFacCtmp.LT.hFacMnSz*0.5) THEN |
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hFacC(I,J,K,bi,bj)=0. |
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ELSE |
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hFacC(I,J,K,bi,bj)=hFacMnSz |
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ENDIF |
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ELSE |
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hFacC(I,J,K,bi,bj)=hFacCtmp |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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C- Re-calculate lower-R Boundary position, taking into account hFacC |
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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) = rF(1) |
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DO K=Nr,1,-1 |
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R_low(I,J,bi,bj) = R_low(I,J,bi,bj) |
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& - drF(k)*hFacC(I,J,K,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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C - end bi,bj loops. |
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ENDDO |
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ENDDO |
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|
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C- Calculate lopping factor hFacC : Remove part outside of the domain |
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C taking into account the Reference (=at rest) Surface Position Ro_surf |
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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 K=1, Nr |
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hFacMnSz=max( hFacMin, min(hFacMinDr*recip_drF(k),1. _d 0) ) |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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C o Non-dimensional distance between grid boundary and model surface |
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hFacCtmp = (rF(k)-Ro_surf(I,J,bi,bj))*recip_drF(K) |
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C o Reduce the previous fraction : substract the outside part. |
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hFacCtmp = hFacC(I,J,K,bi,bj) - max( hFacCtmp, 0. _d 0) |
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C o set to zero if empty Column : |
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hFacCtmp = max( hFacCtmp, 0. _d 0) |
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C o Impose minimum fraction and/or size (dimensional) |
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IF (hFacCtmp.LT.hFacMnSz) THEN |
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IF (hFacCtmp.LT.hFacMnSz*0.5) THEN |
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hFacC(I,J,K,bi,bj)=0. |
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ELSE |
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hFacC(I,J,K,bi,bj)=hFacMnSz |
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ENDIF |
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ELSE |
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hFacC(I,J,K,bi,bj)=hFacCtmp |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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#ifdef ALLOW_SHELFICE |
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C-- compute contributions of shelf ice to looping factors |
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IF ( useShelfIce ) THEN |
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DO K=1, Nr |
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hFacMnSz=max( hFacMin, min(hFacMinDr*recip_drF(k),1. _d 0) ) |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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C o Non-dimensional distance between grid boundary and model surface |
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hFacCtmp = (rF(k)-R_shelfIce(I,J,bi,bj))*recip_drF(K) |
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C o Reduce the previous fraction : substract the outside part. |
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hFacCtmp = hFacC(I,J,K,bi,bj) - max( hFacCtmp, 0. _d 0) |
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C o set to zero if empty Column : |
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hFacCtmp = max( hFacCtmp, 0. _d 0) |
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C o Impose minimum fraction and/or size (dimensional) |
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IF (hFacCtmp.LT.hFacMnSz) THEN |
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IF (hFacCtmp.LT.hFacMnSz*0.5) THEN |
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hFacC(I,J,K,bi,bj)=0. |
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ELSE |
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hFacC(I,J,K,bi,bj)=hFacMnSz |
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ENDIF |
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ELSE |
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hFacC(I,J,K,bi,bj)=hFacCtmp |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_SHELFICE */ |
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|
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C- Re-calculate Reference surface position, taking into account hFacC |
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C initialize Total column fluid thickness and surface k index |
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C Note: if no fluid (continent) ==> ksurf = Nr+1 |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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tmpfld(I,J,bi,bj) = 0. |
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ksurfC(I,J,bi,bj) = Nr+1 |
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maskH(I,J,bi,bj) = 0. |
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Ro_surf(I,J,bi,bj) = R_low(I,J,bi,bj) |
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DO K=Nr,1,-1 |
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Ro_surf(I,J,bi,bj) = Ro_surf(I,J,bi,bj) |
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& + drF(k)*hFacC(I,J,K,bi,bj) |
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IF (hFacC(I,J,K,bi,bj).NE.0.) THEN |
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ksurfC(I,J,bi,bj) = k |
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maskH(I,J,bi,bj) = 1. |
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tmpfld(I,J,bi,bj) = tmpfld(I,J,bi,bj) + 1. |
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ENDIF |
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ENDDO |
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kLowC(I,J,bi,bj) = 0 |
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DO K= 1, Nr |
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IF (hFacC(I,J,K,bi,bj).NE.0) THEN |
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kLowC(I,J,bi,bj) = K |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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C - end bi,bj loops. |
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ENDDO |
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ENDDO |
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|
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C CALL PLOT_FIELD_XYRS( tmpfld, |
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C & 'Model Depths K Index' , 1, myThid ) |
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CALL PLOT_FIELD_XYRS(R_low, |
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& 'Model R_low (ini_masks_etc)', 1, myThid) |
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CALL PLOT_FIELD_XYRS(Ro_surf, |
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& 'Model Ro_surf (ini_masks_etc)', 1, myThid) |
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|
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C Calculate quantities derived from XY depth map |
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globalArea = 0. _d 0 |
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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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C Total fluid column thickness (r_unit) : |
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c Rcolumn(i,j,bi,bj)= Ro_surf(i,j,bi,bj) - R_low(i,j,bi,bj) |
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tmpfld(i,j,bi,bj) = Ro_surf(i,j,bi,bj) - R_low(i,j,bi,bj) |
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C Inverse of fluid column thickness (1/r_unit) |
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IF ( tmpfld(i,j,bi,bj) .LE. 0. ) THEN |
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recip_Rcol(i,j,bi,bj) = 0. |
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ELSE |
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recip_Rcol(i,j,bi,bj) = 1. _d 0 / tmpfld(i,j,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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C- Compute the domain Area: |
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tileArea = 0. _d 0 |
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DO j=1,sNy |
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DO i=1,sNx |
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tileArea = tileArea + rA(i,j,bi,bj)*maskH(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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globalArea = globalArea + tileArea |
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ENDDO |
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ENDDO |
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C _EXCH_XY_R4( recip_Rcol, myThid ) |
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_GLOBAL_SUM_R8( globalArea, myThid ) |
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|
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C hFacW and hFacS (at U and V points) |
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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 K=1, Nr |
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DO J=1-Oly,sNy+Oly |
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hFacW(1-OLx,J,K,bi,bj)= 0. |
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DO I=2-Olx,sNx+Olx |
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hFacW(I,J,K,bi,bj)= |
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& MIN(hFacC(I,J,K,bi,bj),hFacC(I-1,J,K,bi,bj)) |
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ENDDO |
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ENDDO |
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DO I=1-Olx,sNx+Olx |
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hFacS(I,1-OLy,K,bi,bj)= 0. |
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ENDDO |
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DO J=2-Oly,sNy+oly |
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DO I=1-Olx,sNx+Olx |
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hFacS(I,J,K,bi,bj)= |
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& MIN(hFacC(I,J,K,bi,bj),hFacC(I,J-1,K,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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ENDDO |
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CALL EXCH_UV_XYZ_RS(hFacW,hFacS,.FALSE.,myThid) |
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C The following block allows thin walls representation of non-periodic |
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C boundaries such as happen on the lat-lon grid at the N/S poles. |
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C We should really supply a flag for doing this. |
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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 K=1, Nr |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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IF (DYG(I,J,bi,bj).EQ.0.) hFacW(I,J,K,bi,bj)=0. |
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IF (DXG(I,J,bi,bj).EQ.0.) hFacS(I,J,K,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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ENDDO |
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|
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C- Write to disk: Total Column Thickness & hFac(C,W,S): |
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_BARRIER |
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c _BEGIN_MASTER( myThid ) |
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C This I/O is now done in write_grid.F |
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C CALL MDSWRITEFIELD( 'Depth', writeBinaryPrec, .TRUE., |
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C & 'RS', 1, tmpfld, 1, -1, myThid ) |
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c CALL WRITE_FLD_XY_RS( 'Depth',' ',tmpfld,0,myThid) |
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c CALL WRITE_FLD_XYZ_RS( 'hFacC',' ',hFacC,0,myThid) |
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c CALL WRITE_FLD_XYZ_RS( 'hFacW',' ',hFacW,0,myThid) |
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c CALL WRITE_FLD_XYZ_RS( 'hFacS',' ',hFacS,0,myThid) |
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c _END_MASTER(myThid) |
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|
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CALL PLOT_FIELD_XYZRS( hFacC, 'hFacC' , Nr, 1, myThid ) |
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CALL PLOT_FIELD_XYZRS( hFacW, 'hFacW' , Nr, 1, myThid ) |
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CALL PLOT_FIELD_XYZRS( hFacS, 'hFacS' , Nr, 1, myThid ) |
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|
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C Masks and reciprocals of hFac[CWS] |
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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 K=1,Nr |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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IF (hFacC(I,J,K,bi,bj) .NE. 0. ) THEN |
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recip_hFacC(I,J,K,bi,bj) = 1. _d 0 / hFacC(I,J,K,bi,bj) |
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maskC(I,J,K,bi,bj) = 1. |
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ELSE |
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recip_hFacC(I,J,K,bi,bj) = 0. |
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maskC(I,J,K,bi,bj) = 0. |
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ENDIF |
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IF (hFacW(I,J,K,bi,bj) .NE. 0. ) THEN |
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recip_hFacW(I,J,K,bi,bj) = 1. _d 0 / hFacW(I,J,K,bi,bj) |
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maskW(I,J,K,bi,bj) = 1. |
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ELSE |
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recip_hFacW(I,J,K,bi,bj) = 0. |
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maskW(I,J,K,bi,bj) = 0. |
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ENDIF |
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IF (hFacS(I,J,K,bi,bj) .NE. 0. ) THEN |
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recip_hFacS(I,J,K,bi,bj) = 1. _d 0 / hFacS(I,J,K,bi,bj) |
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maskS(I,J,K,bi,bj) = 1. |
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ELSE |
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recip_hFacS(I,J,K,bi,bj) = 0. |
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maskS(I,J,K,bi,bj) = 0. |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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C- Calculate surface k index for interface W & S (U & V points) |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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ksurfW(I,J,bi,bj) = Nr+1 |
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ksurfS(I,J,bi,bj) = Nr+1 |
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DO k=Nr,1,-1 |
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IF (hFacW(I,J,K,bi,bj).NE.0.) ksurfW(I,J,bi,bj) = k |
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IF (hFacS(I,J,K,bi,bj).NE.0.) ksurfS(I,J,bi,bj) = k |
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ENDDO |
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ENDDO |
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ENDDO |
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C - end bi,bj loops. |
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ENDDO |
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ENDDO |
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|
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C Calculate recipricols grid lengths |
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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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IF ( dxG(I,J,bi,bj) .NE. 0. ) |
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& recip_dxG(I,J,bi,bj)=1. _d 0/dxG(I,J,bi,bj) |
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IF ( dyG(I,J,bi,bj) .NE. 0. ) |
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& recip_dyG(I,J,bi,bj)=1. _d 0/dyG(I,J,bi,bj) |
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IF ( dxC(I,J,bi,bj) .NE. 0. ) |
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& recip_dxC(I,J,bi,bj)=1. _d 0/dxC(I,J,bi,bj) |
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IF ( dyC(I,J,bi,bj) .NE. 0. ) |
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& recip_dyC(I,J,bi,bj)=1. _d 0/dyC(I,J,bi,bj) |
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IF ( dxF(I,J,bi,bj) .NE. 0. ) |
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& recip_dxF(I,J,bi,bj)=1. _d 0/dxF(I,J,bi,bj) |
| 334 |
IF ( dyF(I,J,bi,bj) .NE. 0. ) |
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& recip_dyF(I,J,bi,bj)=1. _d 0/dyF(I,J,bi,bj) |
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IF ( dxV(I,J,bi,bj) .NE. 0. ) |
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& recip_dxV(I,J,bi,bj)=1. _d 0/dxV(I,J,bi,bj) |
| 338 |
IF ( dyU(I,J,bi,bj) .NE. 0. ) |
| 339 |
& recip_dyU(I,J,bi,bj)=1. _d 0/dyU(I,J,bi,bj) |
| 340 |
IF ( rA(I,J,bi,bj) .NE. 0. ) |
| 341 |
& recip_rA(I,J,bi,bj)=1. _d 0/rA(I,J,bi,bj) |
| 342 |
IF ( rAs(I,J,bi,bj) .NE. 0. ) |
| 343 |
& recip_rAs(I,J,bi,bj)=1. _d 0/rAs(I,J,bi,bj) |
| 344 |
IF ( rAw(I,J,bi,bj) .NE. 0. ) |
| 345 |
& recip_rAw(I,J,bi,bj)=1. _d 0/rAw(I,J,bi,bj) |
| 346 |
IF ( rAz(I,J,bi,bj) .NE. 0. ) |
| 347 |
& recip_rAz(I,J,bi,bj)=1. _d 0/rAz(I,J,bi,bj) |
| 348 |
ENDDO |
| 349 |
ENDDO |
| 350 |
ENDDO |
| 351 |
ENDDO |
| 352 |
|
| 353 |
c #ifdef ALLOW_NONHYDROSTATIC |
| 354 |
C-- Calculate "recip_hFacU" = reciprocal hfac distance/volume for W cells |
| 355 |
C NOTE: not used ; computed locally in CALC_GW |
| 356 |
c #endif |
| 357 |
|
| 358 |
RETURN |
| 359 |
END |
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