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C $Header: /u/gcmpack/models/MITgcmUV/model/src/ini_masks_etc.F,v 1.18.2.2 2001/01/26 16:57:19 jmc Exp $ |
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#include "CPP_OPTIONS.h" |
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CStartOfInterface |
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SUBROUTINE INI_MASKS_ETC( myThid ) |
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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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IMPLICIT NONE |
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|
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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 == 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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CEndOfInterface |
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C == Local variables == |
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C bi,bj - Loop counters |
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C I,J,K |
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INTEGER bi, bj |
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INTEGER I, J, K |
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INTEGER kadj_rf, klev_noH |
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#ifdef ALLOW_NONHYDROSTATIC |
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INTEGER Km1 |
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_RL hFacUpper,hFacLower |
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#endif |
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_RL hFacCtmp,topo_rkfac |
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_RL hFacMnSz |
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|
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IF (groundAtK1) THEN |
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topo_rkfac = -rkFac |
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kadj_rf = 1 |
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klev_noH = Nr+1 |
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ELSE |
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topo_rkfac = rkFac |
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kadj_rf = 0 |
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klev_noH = 1 |
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ENDIF |
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|
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C Calculate lopping factor hFacC |
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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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c IF (groundAtK1) THEN |
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C o Non-dimensional distance between grid boundary and model depth |
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C for case with "ground" at K=1 (i.e. like a good atmos model) |
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C e.g. rkfac=+1 => dR/dk<0 (eg. R=p): hFacCtmp=(H(x,y)-rF(k))/drF(K) |
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C e.g. rkfac=-1 => dR/dk>0 (eg. R=z): hFacCtmp=(rF(K)-H(x,y))/drF(K) |
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c hFacCtmp=rkFac*(H(I,J,bi,bj)-rF(K+1))*recip_drF(K) |
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c ELSE |
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C o Non-dimensional distance between grid boundary and model depth |
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C for case with "ground" at K=Nr (i.e. like original ocean model) |
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C e.g. rkfac=+1 => dR/dk<0 (eg. R=z): hFacCtmp=(rF(K)-H(x,y))/drF(K) |
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C e.g. rkfac=-1 => dR/dk>0 (eg. R=p): hFacCtmp=(H(x,y)-rF(k))/drF(K) |
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c hFacCtmp=rkFac*(rF(K)-H(I,J,bi,bj))*recip_drF(K) |
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c ENDIF |
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hFacCtmp=topo_rkfac*(rF(K+kadj_rf)-H(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 And there we have it, the fractional open cell volume |
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hFacC(I,J,K,bi,bj)=hFacCtmp |
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C o Impose minimum fraction and/or size (dimensional) |
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hFacMnSz=max( hFacMin , min(hFacMinDr*recip_drF(k),1. _d 0) ) |
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IF (hFacC(I,J,K,bi,bj).LT.hFacMnSz) THEN |
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IF (hFacC(I,J,K,bi,bj).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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ENDIF |
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IF (hFacC(I,J,K,bi,bj).NE.0.) |
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& depthInK(i,j,bi,bj) = depthInK(i,j,bi,bj) + 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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ENDDO |
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C _EXCH_XYZ_R4(hFacC , myThid ) |
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C _EXCH_XY_R4( depthInK, myThid ) |
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|
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CALL PLOT_FIELD_XYRS( depthInK, |
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& 'Model Depths K Index' , 1, myThid ) |
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C Re-calculate depth of ocean, taking into account hFacC |
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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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H(I,J,bi,bj)=rF(klev_noH) |
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DO K=1,Nr |
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H(I,J,bi,bj)=H(I,J,bi,bj)- |
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& topo_rkFac*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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ENDDO |
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ENDDO |
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C _EXCH_XY_R4(H , myThid ) |
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CALL PLOT_FIELD_XYRS(H,'Model depths (ini_masks_etc)',1,myThid) |
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CALL WRITE_FLD_XY_RS( 'Depth',' ',H,0,myThid) |
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CALL WRITE_FLD_XYZ_RS( 'hFacC',' ',hFacC,0,myThid) |
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C CALL MDSWRITEFIELD( 'Depth', writeBinaryPrec, .TRUE., |
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C & 'RS', 1, H, 1, -1, myThid ) |
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|
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C Calculate quantities derived from XY depth map |
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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 Inverse of depth |
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IF ( h(i,j,bi,bj) .EQ. 0. ) THEN |
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recip_H(i,j,bi,bj) = 0. |
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ELSE |
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recip_H(i,j,bi,bj) = 1. / abs( H(i,j,bi,bj) ) |
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ENDIF |
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depthInK(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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C _EXCH_XY_R4( recip_H, myThid ) |
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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,sNy |
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DO I=1,sNx |
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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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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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_EXCH_XYZ_R4(hFacW , myThid ) |
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_EXCH_XYZ_R4(hFacS , myThid ) |
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C Re-do 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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DO I=1-Olx+1,sNx+Olx ! Note range |
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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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DO J=1-Oly+1,sNy+Oly ! Note range |
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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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|
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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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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. / HFacC(I,J,K,bi,bj) |
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ELSE |
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recip_HFacC(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. / 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. / 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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ENDDO |
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ENDDO |
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C _EXCH_XYZ_R4(recip_HFacC , myThid ) |
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C _EXCH_XYZ_R4(recip_HFacW , myThid ) |
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C _EXCH_XYZ_R4(recip_HFacS , myThid ) |
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C _EXCH_XYZ_R4(maskW , myThid ) |
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C _EXCH_XYZ_R4(maskS , myThid ) |
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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.d0/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.d0/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.d0/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.d0/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.d0/dxF(I,J,bi,bj) |
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IF ( dyF(I,J,bi,bj) .NE. 0. ) |
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& recip_dyF(I,J,bi,bj)=1.d0/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.d0/dxV(I,J,bi,bj) |
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IF ( dyU(I,J,bi,bj) .NE. 0. ) |
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& recip_dyU(I,J,bi,bj)=1.d0/dyU(I,J,bi,bj) |
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IF ( rA(I,J,bi,bj) .NE. 0. ) |
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& recip_rA(I,J,bi,bj)=1.d0/rA(I,J,bi,bj) |
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IF ( rAs(I,J,bi,bj) .NE. 0. ) |
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& recip_rAs(I,J,bi,bj)=1.d0/rAs(I,J,bi,bj) |
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IF ( rAw(I,J,bi,bj) .NE. 0. ) |
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& recip_rAw(I,J,bi,bj)=1.d0/rAw(I,J,bi,bj) |
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IF ( rAz(I,J,bi,bj) .NE. 0. ) |
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& recip_rAz(I,J,bi,bj)=1.d0/rAz(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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C Do not need these since above denominators are valid over full range |
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C _EXCH_XY_R4(recip_dxG, myThid ) |
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C _EXCH_XY_R4(recip_dyG, myThid ) |
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C _EXCH_XY_R4(recip_dxC, myThid ) |
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C _EXCH_XY_R4(recip_dyC, myThid ) |
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C _EXCH_XY_R4(recip_dxF, myThid ) |
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C _EXCH_XY_R4(recip_dyF, myThid ) |
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C _EXCH_XY_R4(recip_dxV, myThid ) |
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C _EXCH_XY_R4(recip_dyU, myThid ) |
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C _EXCH_XY_R4(recip_rAw, myThid ) |
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C _EXCH_XY_R4(recip_rAs, myThid ) |
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|
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#ifdef ALLOW_NONHYDROSTATIC |
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C-- Calculate the reciprocal hfac distance/volume for W cells |
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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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Km1=max(K-1,1) |
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hFacUpper=drF(Km1)/(drF(Km1)+drF(K)) |
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IF (Km1.EQ.K) hFacUpper=0. |
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hFacLower=drF(K)/(drF(Km1)+drF(K)) |
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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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IF (hFacC(I,J,K,bi,bj).LE.0.5) THEN |
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recip_hFacU(I,J,K,bi,bj)= |
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& hFacUpper+hFacLower*hFacC(I,J,K,bi,bj) |
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ELSE |
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recip_hFacU(I,J,K,bi,bj)=1. |
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ENDIF |
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ELSE |
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recip_hFacU(I,J,K,bi,bj)=0. |
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ENDIF |
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IF (recip_hFacU(I,J,K,bi,bj).NE.0.) |
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& recip_hFacU(I,J,K,bi,bj)=1./recip_hFacU(I,J,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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C _EXCH_XY_R4(recip_hFacU, myThid ) |
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#endif |
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C |
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RETURN |
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END |
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