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C $Header: /u/gcmpack/MITgcm_contrib/lab_sea_test/growth.F,v 1.1 2004/07/11 06:19:16 dimitri Exp $ |
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C $Name: $ |
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|
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#include "SEAICE_OPTIONS.h" |
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|
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CStartOfInterface |
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SUBROUTINE growth( myTime, myIter, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE growth | |
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C | o Updata ice thickness and snow depth | |
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C |==========================================================| |
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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 "DYNVARS.h" |
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#include "GRID.h" |
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#include "FFIELDS.h" |
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#include "SEAICE_PARAMS.h" |
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#include "SEAICE.h" |
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#include "SEAICE_FFIELDS.h" |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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# include "tamc.h" |
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#endif |
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C === Routine arguments === |
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C myTime - Simulation time |
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C myIter - Simulation timestep number |
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C myThid - Thread no. that called this routine. |
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_RL myTime |
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INTEGER myIter, myThid |
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CEndOfInterface |
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|
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#ifdef ALLOW_SEAICE |
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|
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C === Local variables === |
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C i,j,bi,bj - Loop counters |
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|
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INTEGER i, j, bi, bj |
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_RL TBC, salinity_ice, SDF, Q0, QS |
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_RL GAREA( 1-OLx:sNx+OLx, 1-OLy:sNy+OLy ) |
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_RL GHEFF( 1-OLx:sNx+OLx, 1-OLy:sNy+OLy ) |
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_RL AR ( 1-OLx:sNx+OLx, 1-OLy:sNy+OLy, nSx, nSy ) |
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|
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C number of surface interface layer |
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INTEGER kSurface |
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|
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_RL mymin_R8, mymax_R8 |
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external mymin_R8, mymax_R8 |
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|
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if ( buoyancyRelation .eq. 'OCEANICP' ) then |
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kSurface = Nr |
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else |
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kSurface = 1 |
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endif |
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|
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salinity_ice=4.0 _d 0 ! ICE SALINITY |
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TBC=271.2 _d 0-273.16 _d 0 ! FREEZING TEMP. OF SEA WATER |
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SDF=1000.0 _d 0/330.0 _d 0 ! RATIO OF WATER DESITY AND SNOW DENSITY |
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Q0=1.0D-06/302.0 _d +00 ! INVERSE HEAT OF FUSION OF ICE |
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QS=1.1 _d +08 ! HEAT OF FUSION OF SNOW |
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|
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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c |
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cph( |
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#ifdef ALLOW_AUTODIFF_TAMC |
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act1 = bi - myBxLo(myThid) |
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max1 = myBxHi(myThid) - myBxLo(myThid) + 1 |
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act2 = bj - myByLo(myThid) |
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max2 = myByHi(myThid) - myByLo(myThid) + 1 |
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act3 = myThid - 1 |
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max3 = nTx*nTy |
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act4 = ikey_dynamics - 1 |
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iicekey = (act1 + 1) + act2*max1 |
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& + act3*max1*max2 |
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& + act4*max1*max2*max3 |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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c |
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#ifdef ALLOW_AUTODIFF_TAMC |
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CADJ STORE theta(:,:,:,bi,bj)= comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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CADJ STORE atemp(:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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cph) |
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DO J=1,sNy |
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DO I=1,sNx |
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SEAICE_SALT(I,J,bi,bj)=ZERO |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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CADJ STORE heff(:,:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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DO J=1,sNy |
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DO I=1,sNx |
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AR(I,J,bi,bj)=MYMIN_R8(AREA(I,J,2,bi,bj), |
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& HEFF(I,J,2,bi,bj)*1.0 _d +04) |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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CADJ STORE heff(:,:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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DO J=1,sNy |
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DO I=1,sNx |
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C-- Create or melt sea-ice so that first-level oceanic temperature |
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C is approximately at the freezing point when there is sea-ice. |
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C Initially the units of YNEG are m of sea-ice. |
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C The factor dRf(1)/72.0764, used to convert temperature |
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C change in deg K to m of sea-ice, is approximately: |
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C dRf(1) * (sea water heat capacity = 3996 J/kg/K) |
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C * (density of sea-water = 1026 kg/m^3) |
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C / (latent heat of fusion of sea-ice = 334000 J/kg) |
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C / (density of sea-ice = 910 kg/m^3) |
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C Negative YNEG leads to ice growth. |
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C Positive YNEG leads to ice melting. |
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YNEG(I,J,bi,bj)=(theta(I,J,1,bi,bj)-TBC)*.01 |
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& *dRf(1)/72.0764 _d 0 |
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GHEFF(I,J)=HEFF(I,J,1,bi,bj) |
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HEFF(I,J,1,bi,bj)=MYMAX_R8(ZERO,HEFF(I,J,1,bi,bj)-YNEG(I,J,bi,bj)) |
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YNEG(I,J,bi,bj)=GHEFF(I,J)-HEFF(I,J,1,bi,bj) |
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SEAICE_SALT(I,J,bi,bj)=SEAICE_SALT(I,J,bi,bj)-YNEG(I,J,bi,bj) |
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C-- Now convert YNEG back to deg K. |
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YNEG(I,J,bi,bj)=YNEG(I,J,bi,bj)*recip_dRf(1)*72.0764 _d 0 |
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ENDDO |
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ENDDO |
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c |
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ENDDO |
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ENDDO |
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|
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cph( |
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#ifdef ALLOW_AUTODIFF_TAMC |
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CADJ STORE area = comlev1, key = ikey_dynamics |
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CADJ STORE atemp = comlev1, key = ikey_dynamics |
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CADJ STORE heff = comlev1, key = ikey_dynamics |
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CADJ STORE hsnow = comlev1, key = ikey_dynamics |
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CADJ STORE lwdown = comlev1, key = ikey_dynamics |
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CADJ STORE tice = comlev1, key = ikey_dynamics |
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CADJ STORE uwind = comlev1, key = ikey_dynamics |
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CADJ STORE vwind = comlev1, key = ikey_dynamics |
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# ifdef SEAICE_MULTILEVEL |
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CADJ STORE tices = comlev1, key = ikey_dynamics |
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# endif |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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cph) |
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C GROWTH SUBROUTINE CALCULATES TOTAL GROWTH TENDENCIES, |
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C INCLUDING SNOWFALL |
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CALL GROATB(A22,myThid) |
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|
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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cph( |
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#ifdef ALLOW_AUTODIFF_TAMC |
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act1 = bi - myBxLo(myThid) |
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max1 = myBxHi(myThid) - myBxLo(myThid) + 1 |
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act2 = bj - myByLo(myThid) |
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max2 = myByHi(myThid) - myByLo(myThid) + 1 |
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act3 = myThid - 1 |
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max3 = nTx*nTy |
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act4 = ikey_dynamics - 1 |
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iicekey = (act1 + 1) + act2*max1 |
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& + act3*max1*max2 |
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& + act4*max1*max2*max3 |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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c |
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#ifdef ALLOW_AUTODIFF_TAMC |
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CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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CADJ STORE heff(:,:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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CADJ STORE fo(:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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CADJ STORE fice(:,:,bi,bj) = comlev1_bibj, |
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CADJ & key = iicekey, byte = isbyte |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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cph) |
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C NOW CALCULATE CORRECTED GROWTH |
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DO J=1,sNy |
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DO I=1,sNx |
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GHEFF(I,J)=-SEAICE_deltaTtherm*FICE(I,J,bi,bj) |
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GAREA(I,J)=HSNOW(I,J,bi,bj)*QS |
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IF(GHEFF(I,J).GT.ZERO.AND.GHEFF(I,J).LE.GAREA(I,J)) THEN |
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HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)-GHEFF(I,J)/QS |
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C SNOW CONVERTED INTO WATER AND THEN INTO ICE |
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C The factor 0.920 is used to convert m of sea-ice to m of freshwater |
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SEAICE_SALT(I,J,bi,bj)=SEAICE_SALT(I,J,bi,bj) |
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& -(GHEFF(I,J)/QS)/SDF/0.920 _d 0*AR(I,J,bi,bj) |
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FICE(I,J,bi,bj)=ZERO |
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ELSE IF(GHEFF(I,J).GT.GAREA(I,J)) THEN |
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FICE(I,J,bi,bj)=-(GHEFF(I,J)-GAREA(I,J))/SEAICE_deltaTtherm |
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SEAICE_SALT(I,J,bi,bj)=SEAICE_SALT(I,J,bi,bj) |
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& -HSNOW(I,J,bi,bj)/SDF/0.920 _d 0*AR(I,J,bi,bj) |
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HSNOW(I,J,bi,bj)=0.0 |
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END IF |
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|
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ENDDO |
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ENDDO |
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|
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C NOW GET TOTAL GROWTH RATE |
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DO J=1,sNy |
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DO I=1,sNx |
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FHEFF(I,J,bi,bj)=FICE(I,J,bi,bj)*AR(I,J,bi,bj) |
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& +(ONE-AR(I,J,bi,bj))*FO(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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|
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|
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C NOW UPDATE AREA |
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DO J=1,sNy |
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DO I=1,sNx |
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GHEFF(I,J)=-SEAICE_deltaTtherm*FHEFF(I,J,bi,bj)*Q0 |
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GAREA(I,J)=SEAICE_deltaTtherm*FO(I,J,bi,bj)*Q0 |
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GHEFF(I,J)=-ONE*MYMIN_R8(HEFF(I,J,1,bi,bj),GHEFF(I,J)) |
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GAREA(I,J)=MYMAX_R8(ZERO,GAREA(I,J)) |
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HCORR(I,J,bi,bj)=MYMIN_R8(ZERO,GHEFF(I,J)) |
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ENDDO |
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ENDDO |
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DO J=1,sNy |
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DO I=1,sNx |
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GAREA(I,J)=TWO*(ONE-AREA(I,J,2,bi,bj))*GAREA(I,J)/HO |
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& +HALF*HCORR(I,J,bi,bj)*AREA(I,J,2,bi,bj) |
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& /(HEFF(I,J,1,bi,bj)+.00001 _d 0) |
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AREA(I,J,1,bi,bj)=AREA(I,J,1,bi,bj)+GAREA(I,J) |
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ENDDO |
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ENDDO |
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|
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C NOW UPDATE HEFF |
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DO J=1,sNy |
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DO I=1,sNx |
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GHEFF(I,J)=-SEAICE_deltaTtherm* |
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& FICE(I,J,bi,bj)*Q0*AR(I,J,bi,bj) |
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GHEFF(I,J)=-ONE*MYMIN_R8(HEFF(I,J,1,bi,bj),GHEFF(I,J)) |
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HEFF(I,J,1,bi,bj)=HEFF(I,J,1,bi,bj)+GHEFF(I,J) |
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SEAICE_SALT(I,J,bi,bj)=SEAICE_SALT(I,J,bi,bj)+GHEFF(I,J) |
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C NOW CALCULATE QNETI UNDER ICE IF ANY |
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QNETI(I,J,bi,bj)=(GHEFF(I,J)-SEAICE_deltaTtherm* |
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& FICE(I,J,bi,bj)*Q0*AR(I,J,bi,bj))/Q0/SEAICE_deltaTtherm |
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ENDDO |
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ENDDO |
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|
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C NOW GET TOTAL QNET AND QSW |
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DO J=1,sNy |
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DO I=1,sNx |
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QNET(I,J,bi,bj)=QNETI(I,J,bi,bj)*AR(I,J,bi,bj) |
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& +(ONE-AR(I,J,bi,bj))*QNETO(I,J,bi,bj) |
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QSW(I,J,bi,bj)=QSWI(I,J,bi,bj)*AR(I,J,bi,bj) |
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& +(ONE-AR(I,J,bi,bj))*QSWO(I,J,bi,bj) |
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#ifndef SHORTWAVE_HEATING |
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QNET(I,J,bi,bj)=QNET(I,J,bi,bj)+QSW(I,J,bi,bj) |
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#endif |
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C Add YNEG contribution to QNET |
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QNET(I,J,bi,bj)=QNET(I,J,bi,bj) |
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& +YNEG(I,J,bi,bj)/SEAICE_deltaTtherm*maskC(I,J,1,bi,bj) |
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& *HeatCapacity_Cp*recip_horiVertRatio*rhoConst |
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& *drF(kSurface)*hFacC(i,j,kSurface,bi,bj) |
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ENDDO |
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ENDDO |
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|
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C NOW UPDATE OTHER THINGS |
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DO J=1,sNy |
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DO I=1,sNx |
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IF(FICE(I,J,bi,bj).GT.ZERO) THEN |
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C FREEZING, PRECIP ADDED AS SNOW |
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HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)+SEAICE_deltaTtherm* |
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& PRECIP(I,J,bi,bj)*AREA(I,J,2,bi,bj)*SDF |
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ELSE |
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C ADD PRECIP AS RAIN, WATER CONVERTED INTO ICE BY /0.920 _d 0 |
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SEAICE_SALT(I,J,bi,bj)=SEAICE_SALT(I,J,bi,bj) |
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& -PRECIP(I,J,bi,bj)*AREA(I,J,2,bi,bj)* |
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& SEAICE_deltaTtherm/0.920 _d 0 |
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ENDIF |
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c Now add in precip over open water directly into ocean as negative salt |
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SEAICE_SALT(I,J,bi,bj)=SEAICE_SALT(I,J,bi,bj) |
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& -PRECIP(I,J,bi,bj)*(ONE-AREA(I,J,2,bi,bj)) |
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& *SEAICE_deltaTtherm/0.920 _d 0 |
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C NOW GET FRESH WATER FLUX |
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EmPmR(I,J,bi,bj)= maskC(I,J,1,bi,bj)*( |
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& EVAP(I,J,bi,bj)-RUNOFF(I,J,bi,bj) |
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& +SEAICE_SALT(I,J,bi,bj)*0.92 _d 0/SEAICE_deltaTtherm |
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& ) |
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ENDDO |
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ENDDO |
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|
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#ifdef SEAICE_DEBUG |
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c CALL PLOT_FIELD_XYRS( UWIND,'Current UWIND ', myIter, myThid ) |
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c CALL PLOT_FIELD_XYRS( VWIND,'Current VWIND ', myIter, myThid ) |
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CALL PLOT_FIELD_XYRS( GWATX,'Current GWATX ', myIter, myThid ) |
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CALL PLOT_FIELD_XYRS( GWATY,'Current GWATY ', myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( FO,'Current FO ', myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( FHEFF,'Current FHEFF ', myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( QSW,'Current QSW ', myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( QNET,'Current QNET ', myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( EmPmR,'Current EmPmR ', myIter, 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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GHEFF(I,J)=SQRT(UICE(I,J,1,bi,bj)**2+VICE(I,J,1,bi,bj)**2) |
308 |
GAREA(I,J)=HEFF(I,J,1,bi,bj) |
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print*,'I J QNET:',I, J, QNET(i,j,bi,bj), QSW(I,J,bi,bj) |
310 |
ENDDO |
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ENDDO |
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CALL PLOT_FIELD_XYRL( GHEFF,'Current UICE ', myIter, myThid ) |
313 |
CALL PLOT_FIELD_XYRL( GAREA,'Current HEFF ', myIter, myThid ) |
314 |
DO j=1-OLy,sNy+OLy |
315 |
DO i=1-OLx,sNx+OLx |
316 |
if(HEFF(i,j,1,bi,bj).gt.1.) then |
317 |
print '(A,2i4,3f10.2)','#### i j heff theta yneg',i,j, |
318 |
& HEFF(i,j,1,bi,bj),theta(I,J,1,bi,bj),yneg(I,J,bi,bj) |
319 |
print '(A,3f10.2)','QSW, QNET before/after correction', |
320 |
& QSW(I,J,bi,bj),QNETI(I,J,bi,bj)*AR(I,J,bi,bj) |
321 |
& +(ONE-AR(I,J,bi,bj))*QNETO(I,J,bi,bj), QNET(I,J,bi,bj) |
322 |
endif |
323 |
ENDDO |
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ENDDO |
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#endif /* SEAICE_DEBUG */ |
326 |
|
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crg Added by Ralf Giering: do we need DO_WE_NEED_THIS ? |
328 |
#define DO_WE_NEED_THIS |
329 |
C NOW ZERO OUTSIDE POINTS |
330 |
DO J=1,sNy |
331 |
DO I=1,sNx |
332 |
C NOW SET AREA(I,J,1,bi,bj)=0 WHERE NO ICE IS |
333 |
AREA(I,J,1,bi,bj)=MYMIN_R8(AREA(I,J,1,bi,bj) |
334 |
& ,HEFF(I,J,1,bi,bj)/.0001 _d 0) |
335 |
ENDDO |
336 |
ENDDO |
337 |
#ifdef ALLOW_AUTODIFF_TAMC |
338 |
CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj, |
339 |
CADJ & key = iicekey, byte = isbyte |
340 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
341 |
DO J=1,sNy |
342 |
DO I=1,sNx |
343 |
C NOW TRUNCATE AREA |
344 |
#ifdef DO_WE_NEED_THIS |
345 |
AREA(I,J,1,bi,bj)=MYMIN_R8(ONE,AREA(I,J,1,bi,bj)) |
346 |
ENDDO |
347 |
ENDDO |
348 |
#ifdef ALLOW_AUTODIFF_TAMC |
349 |
CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj, |
350 |
CADJ & key = iicekey, byte = isbyte |
351 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
352 |
DO J=1,sNy |
353 |
DO I=1,sNx |
354 |
AREA(I,J,1,bi,bj)=MYMAX_R8(ZERO,AREA(I,J,1,bi,bj)) |
355 |
HSNOW(I,J,bi,bj)=MYMAX_R8(ZERO,HSNOW(I,J,bi,bj)) |
356 |
#endif |
357 |
AREA(I,J,1,bi,bj)=AREA(I,J,1,bi,bj)*HEFFM(I,J,bi,bj) |
358 |
HEFF(I,J,1,bi,bj)=HEFF(I,J,1,bi,bj)*HEFFM(I,J,bi,bj) |
359 |
#ifdef DO_WE_NEED_THIS |
360 |
c HEFF(I,J,1,bi,bj)=MYMIN_R8(MAX_HEFF,HEFF(I,J,1,bi,bj)) |
361 |
#endif |
362 |
HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
363 |
ENDDO |
364 |
ENDDO |
365 |
|
366 |
ENDDO |
367 |
ENDDO |
368 |
|
369 |
#endif /* ALLOW_SEAICE */ |
370 |
|
371 |
RETURN |
372 |
END |