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C $Header: /u/gcmpack/MITgcm/pkg/aim_v23/aim_sice2aim.F,v 1.1 2004/04/08 00:14:09 jmc Exp $ |
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C $Name: $ |
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|
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#include "AIM_OPTIONS.h" |
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#ifdef ALLOW_THSICE |
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#include "THSICE_OPTIONS.h" |
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#endif |
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|
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CBOP |
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C !ROUTINE: AIM_SICE2AIM |
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C !INTERFACE: |
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SUBROUTINE AIM_SICE2AIM( |
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I land_frc, |
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U aimTsoce, aimSIfrc, |
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O aimTsice, aimAlb, |
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I myTime, myIter, bi, bj, myThid ) |
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|
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C !DESCRIPTION: \bv |
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C *================================================================* |
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C | S/R AIM_SICE2AIM |
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C | provide surface Boundary Conditions over sea-ice |
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C | (from thsice pkg) to atmospheric physics package AIM |
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C *================================================================* |
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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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|
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C == Global variables === |
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C-- size for MITgcm & Physics package : |
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#include "AIM_SIZE.h" |
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|
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C-- MITgcm |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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|
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C-- Physics package |
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#include "AIM_PARAMS.h" |
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#include "com_forcon.h" |
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|
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#ifdef ALLOW_THSICE |
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C-- Sea-Ice package |
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#include "THSICE_SIZE.h" |
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#include "THSICE_PARAMS.h" |
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#include "THSICE_VARS.h" |
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#include "THSICE_TAVE.h" |
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#endif |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C land_frc :: land fraction [0-1] |
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C aimTsoce :: sea surface temp [K], used in AIM |
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C aimSIfrc :: sea-ice fraction [0-1] |
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C aimTsice :: sea-ice (or snow) surface temp (K), used in AIM |
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C aimAlb :: sea-ice albedo [0-1], used in AIM |
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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 bi,bj :: Tile index |
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C myThid :: Number of this instance of the routine |
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_RS land_frc(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL aimTsoce(sNx,sNy) |
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_RL aimSIfrc(sNx,sNy) |
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_RL aimTsice(sNx,sNy) |
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_RL aimAlb(sNx,sNy) |
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INTEGER myIter, bi, bj, myThid |
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_RL myTime |
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CEOP |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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#ifdef ALLOW_AIM |
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#ifdef ALLOW_THSICE |
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|
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C == Local variables == |
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C i,j :: Loop counters |
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INTEGER i,j |
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|
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IF ( .TRUE. ) THEN |
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C- Use thsice-pkg output instead of prescribed Temp & ice fraction |
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DO j=1,sNy |
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DO i=1,sNx |
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aimTsice(i,j) = Tsrf(i,j,bi,bj)+celsius2K |
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aimSIfrc(i,j) = iceMask(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ELSE |
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C- Fill in thsice-pkg Temp. using AIM surf. fields |
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DO j=1,sNy |
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DO i=1,sNx |
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Tsrf (i,j,bi,bj) = aimTsice(i,j)-celsius2K |
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Tice1(i,j,bi,bj) = Tsrf (i,j,bi,bj) |
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Tice2(i,j,bi,bj) = Tsrf (i,j,bi,bj) |
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iceMask(i,j,bi,bj) = aimSIfrc(i,j) |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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IF ( .TRUE. ) THEN |
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C- Compute albedo over sea-ice |
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DO j=1,sNy |
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DO i=1,sNx |
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IF ( iceMask(i,j,bi,bj) .GT. 0. _d 0 ) THEN |
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CALL THSICE_ALBEDO( |
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I snowHeight(i,j,bi,bj), iceHeight(i,j,bi,bj), |
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I Tsrf(i,j,bi,bj), snowAge(i,j,bi,bj), |
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O aimAlb(i,j), |
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I myThid) |
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ELSE |
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aimAlb(i,j) = ALBICE |
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ENDIF |
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#ifdef ALLOW_TIMEAVE |
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ice_albedo_Ave(i,j,bi,bj) = ice_albedo_Ave(i,j,bi,bj) |
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& + iceMask(i,j,bi,bj)*aimAlb(i,j)*thSIce_deltaT |
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#endif /*ALLOW_TIMEAVE*/ |
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ENDDO |
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ENDDO |
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ELSE |
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C- Surface Albedo : (from F.M. FORDATE S/R) |
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DO j=1,sNy |
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DO i=1,sNx |
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aimAlb(i,j) = ALBICE |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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C-- fill in ocean mixed layer variables |
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C notes: this replace reading initial conditions from files. |
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C needs to be done before call to phy_driver (since freezing |
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C temp. is fct of salinity) ; but would be better somewhere else. |
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IF ( tauRelax_MxL .EQ. -1. _d 0 |
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& .OR. ( stepFwd_oceMxL .AND. StartIceModel.NE.0 |
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& .AND. myIter.EQ.nIter0 ) |
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& .OR. ( myIter.EQ.0 .AND. myTime .EQ. 0. ) |
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& ) THEN |
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DO j=1,sNy |
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DO i=1,sNx |
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IF ( land_frc(i,j,bi,bj) .LT. 1. _d 0 ) THEN |
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tOceMxL(i,j,bi,bj) = aimTsoce(i,j)-celsius2K |
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sOceMxL(i,j,bi,bj) = sMxL_default |
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ENDIF |
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ENDDO |
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ENDDO |
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ELSE |
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C-- Use ocean mixed layer Temp as Atmos. SST (instead of prescribed Temp) |
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DO j=1,sNy |
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DO i=1,sNx |
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IF ( land_frc(i,j,bi,bj) .LT. 1. _d 0 ) THEN |
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aimTsoce(i,j) = tOceMxL(i,j,bi,bj)+celsius2K |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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#endif /* ALLOW_THSICE */ |
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#endif /* ALLOW_AIM */ |
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|
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RETURN |
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END |
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