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C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_slab_ocean.F,v 1.5 2006/04/09 14:47:25 heimbach Exp $ |
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C $Name: $ |
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#include "THSICE_OPTIONS.h" |
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CBOP |
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C !ROUTINE: THSICE_SLAB_OCEAN |
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C !INTERFACE: |
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SUBROUTINE THSICE_SLAB_OCEAN( |
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I aim_sWght0, aim_sWght1, |
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O dTsurf, |
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I bi, bj, myTime, myIter, myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R THSICE_SLAB_OCEAN |
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C | o Slab ocean for atmosphere (and sea-ice) model |
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C *==========================================================* |
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C | o add ocean-surface fluxes + restoring term |
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C | and step forward ocean mixed-layer Temp. & Salinity |
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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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C-- MITgcm |
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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 "FFIELDS.h" |
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C-- Sea-Ice package |
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#include "THSICE_PARAMS.h" |
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#include "THSICE_VARS.h" |
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C-- Physics package |
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#ifdef ALLOW_AIM |
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#include "AIM_FFIELDS.h" |
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#endif |
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine Arguments == |
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C aim_sWght0 :: weight for time interpolation of surface BC |
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C aim_sWght1 :: 0/1 = time period before/after the current time |
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C dTsurf :: diagnostics of slab-ocean temperature change [K/iter] |
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C bi,bj :: tile indices |
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C myTime :: Current time of simulation ( s ) |
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C myIter :: Current iteration number in simulation |
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C myThid :: my Thread number Id. |
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_RL aim_sWght0, aim_sWght1 |
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_RL dTsurf(sNx,sNy) |
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_RL myTime |
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INTEGER bi,bj |
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INTEGER myIter, myThid |
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CEOP |
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#ifdef ALLOW_THSICE |
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C == Local variables == |
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C i,j :: Loop counters |
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_RL dtFac, fwFac, heatFac |
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#ifdef ALLOW_AIM |
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_RL oceTfreez, locTemp, dtFacR |
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#endif |
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INTEGER i,j |
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cph the following structure is not supported by TAF |
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cph IF ( .NOT.stepFwd_oceMxL ) RETURN |
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IF ( stepFwd_oceMxL ) THEN |
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C-- add heat flux and fresh-water + salt flux : |
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dtFac = ocean_deltaT/rhosw |
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fwFac = ocean_deltaT*sMxL_default*rhofw/rhosw |
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heatFac = ocean_deltaT/(cpwater*rhosw) |
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DO j=1,sNy |
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DO i=1,sNx |
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IF ( hOceMxL(i,j,bi,bj).NE.0. _d 0 ) THEN |
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dTsurf(i,j) = tOceMxL(i,j,bi,bj) |
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tOceMxL(i,j,bi,bj) = tOceMxL(i,j,bi,bj) |
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& - heatFac*Qnet(i,j,bi,bj) / hOceMxL(i,j,bi,bj) |
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sOceMxL(i,j,bi,bj) = sOceMxL(i,j,bi,bj) |
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& + (fwFac*EmPmR(i,j,bi,bj) - dtFac*saltFlux(i,j,bi,bj)) |
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& / hOceMxL(i,j,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_AIM |
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IF ( tauRelax_MxL .GT. 0. _d 0 ) THEN |
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C-- add restoring (backward) toward climatological Temp. & fixed Salinity |
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dtFac = ocean_deltaT/tauRelax_MxL |
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dtFacR = 1. _d 0 /(1. _d 0 + dtFac) |
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oceTfreez = - 1.9 _d 0 |
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DO j=1,sNy |
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DO i=1,sNx |
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IF ( hOceMxL(i,j,bi,bj).NE.0. _d 0 ) THEN |
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sOceMxL(i,j,bi,bj) = |
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& (sOceMxL(i,j,bi,bj) + dtFac*sMxL_default)*dtFacR |
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oceTfreez = -mu_Tf*sOceMxL(i,j,bi,bj) |
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locTemp = ( aim_sWght0*aim_sst0(i,j,bi,bj) |
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& + aim_sWght1*aim_sst1(i,j,bi,bj) |
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& ) - celsius2K |
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locTemp = MAX( locTemp , oceTfreez ) |
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tOceMxL(i,j,bi,bj) = |
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& (tOceMxL(i,j,bi,bj) + dtFac*locTemp)*dtFacR |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_AIM */ |
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C- Diagnose surf. temp. change |
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DO j=1,sNy |
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DO i=1,sNx |
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IF ( hOceMxL(i,j,bi,bj).NE.0. _d 0 ) THEN |
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dTsurf(i,j) = tOceMxL(i,j,bi,bj) - dTsurf(i,j) |
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ENDIF |
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ENDDO |
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ENDDO |
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heimbach |
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c-- End of IF ( stepFwd_oceMxL ) THEN |
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ENDIF |
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#endif /* ALLOW_THSICE */ |
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RETURN |
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END |
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