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dgoldberg |
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C $Header: /u/gcmpack/MITgcm_contrib/verification_other/shelfice_remeshing/code/shelfice_massmin.F,v 1.2 2016/05/26 11:32:17 ksnow Exp $ |
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C $Name: $ |
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C KS_dens------ |
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#include "SHELFICE_OPTIONS.h" |
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CBOP |
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SUBROUTINE SHELFICE_MASSMIN( R_min, massMin, myThid ) |
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C *============================================================* |
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C | SUBROUTINE SHELFICE_MASSMIN |
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C | o Routine to determine the minimum mass based on MCWT |
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C *============================================================* |
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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 "SHELFICE.h" |
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#include "DYNVARS.h" |
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#ifdef ALLOW_COST |
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# include "SHELFICE_COST.h" |
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#endif /* ALLOW_COST */ |
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C === Routine arguments === |
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C myThid - Number of this instance |
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C |
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C This subroutine calculates the minimum mass to allow MWCT space |
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C under the grounded ice. |
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_RL massMin(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL R_min(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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INTEGER myThid |
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CEndOfInterface |
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#ifdef ALLOW_SHELFICE |
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C === Local variables === |
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C i,j,bi,bj - Loop counters |
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INTEGER i, j, k, bi, bj, k2 |
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_RL drho (Nr) |
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_RL phiHydF(Nr+1) |
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_RL phiHydC(Nr) |
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_RL vert_rho(Nr) |
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_RL drLoc, pLoad_min, sum_hFac |
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_RL SEALEVEL, ETA |
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CEOP |
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C Initialize variables |
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R_min = 0 _d 0 |
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drLoc = 0 _d 0 |
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pLoad_min = 0 _d 0 |
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DO k=1,Nr |
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vert_rho(k) = 0 _d 0 |
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ENDDO |
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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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massMin(i,j,bi,bj) = 0 _d 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 First need vertical profile of density anomaly; |
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CALL SHELFICE_VERT_DENS( vert_rho, myThid ) |
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C Get the average open ocean ssh |
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SEALEVEL = 0. _d 0 |
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ETA = 0. _d 0 |
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CALL SHELFICE_SEA_LEVEL_AVG( SEALEVEL,ETA, myThid ) |
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C calcaulte hydrostatic pressure based on density profile |
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DO k = 1,Nr |
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drho(k) = vert_rho(k) |
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IF (k.EQ.1) THEN |
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phiHydF(k) = 0. |
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C phiHydF(k) = SEALEVEL*gravity*drho(k)*recip_rhoConst |
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ENDIF |
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phiHydC(k)=phiHydF(k) + halfRL*drF(k)*gravity*drho(k) |
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& *recip_rhoConst |
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phiHydF(k+1)=phiHydC(k) + halfRL*drF(k)*gravity*drho(k) |
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& *recip_rhoConst |
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ENDDO |
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C calculate the level of minimum pressure and from that massMin |
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C based on R_MCWT |
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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_min(i,j,bi,bj)=R_Low(i,j,bi,bi)+R_MWCT(i,j,bi,bj) |
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DO k =1,Nr |
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IF ((R_min(i,j,bi,bj) .GT. rF(k+1)) .AND. |
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& (R_min(i,j,bi,bj) .LE. rF(k))) THEN |
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drLoc = (rF(k)-R_min(i,j,bi,bj))/drF(k) |
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pLoad_min = (phiHydF(k) + drLoc* |
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& (phiHydF(k+1)-phiHydF(k)))*rhoConst |
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& + gravity*rhoConst*(drLoc*drF(k)) |
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massMin(i,j,bi,bj) = pLoad_min*recip_gravity - |
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& rF(k)*rhoConst |
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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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#endif /* ALLOW_SHELFICE */ |
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RETURN |
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END |
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