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C $Header: /u/gcmpack/MITgcm_contrib/verification_other/offline_cheapaml/code/cheapaml_seaice.F,v 1.2 2013/05/25 18:19:06 jmc Exp $ |
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C $Name: $ |
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|
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#include "CHEAPAML_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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#ifdef ALLOW_SEAICE |
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# include "SEAICE_OPTIONS.h" |
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#endif |
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|
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CBOP |
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C !ROUTINE: CHEAPAML_SEAICE |
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C !INTERFACE: |
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SUBROUTINE CHEAPAML_SEAICE( |
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I swDown, lwDown, uWind, vWind, LVapor, |
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O fsha, flha, evp, xolw, ssqt, q100, cdq, |
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O Tsurf, iceFrac, sw2oce, |
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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 CHEAPAML_SEAICE |
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C | o Compute fluxes over seaice by calling seaice routine |
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C | to solve for surface temperature. |
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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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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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#ifdef ALLOW_THSICE |
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#include "THSICE_PARAMS.h" |
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#include "THSICE_SIZE.h" |
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#include "THSICE_VARS.h" |
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#endif |
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#ifdef ALLOW_SEAICE |
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# include "SEAICE_SIZE.h" |
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# include "SEAICE.h" |
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#endif |
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|
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INTEGER siLo, siHi, sjLo, sjHi |
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PARAMETER ( siLo = 1-OLx , siHi = sNx+OLx ) |
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PARAMETER ( sjLo = 1-OLy , sjHi = sNy+OLy ) |
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|
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C !INPUT PARAMETERS: |
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C == Routine Arguments == |
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C swDown :: incoming short-wave radiation (+=dw) [W/m2] |
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C lwDown :: incoming long-wave radiation (+=dw) [W/m2] |
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C uRelWind :: relative wind speed, u-component [m/s] |
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C vRelWind :: relative wind speed, v-component [m/s] |
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C LVapor :: latent heat of vaporisation |
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C bi, bj :: tile indices |
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C myIter :: current iteration number |
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C myTime :: current time in simulation |
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C myThid :: my Thread Id number |
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_RL swDown(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL lwDown(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL uWind(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vWind(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL LVapor |
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_RL myTime |
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INTEGER bi, bj, myIter, myThid |
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|
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C !OUTPUT PARAMETERS: |
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C fsha :: sensible heat-flux over seaice (+=up) [W/m2] |
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C flha :: latent heat-flux over seaice (+=up) [W/m2] |
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C evp :: evaporation over seaice (+=up) [kg/m2/s] |
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C xolw :: upward long-wave over seaice (+=up) [W/m2] |
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C ssqt :: |
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C q100 :: |
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C cdq :: |
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C Tsurf :: updated seaice/snow surface temperature [deg.C] |
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C iceFrac :: ice fraction [0-1] |
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C sw2oce :: short-wave over seaice into the ocean (+=dw) [W/m2] |
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_RL fsha(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL flha(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL evp (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL xolw(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL ssqt(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL q100(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL cdq (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL Tsurf(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL iceFrac(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS sw2oce (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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c _RL prcAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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|
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#ifdef ALLOW_THSICE |
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C uRelWind :: relative wind speed, u-component [m/s], (C-grid) |
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C vRelWind :: relative wind speed, v-component [m/s], (C-grid) |
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C windSq :: relative wind speed squared (grid-cell center) |
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INTEGER i, j |
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INTEGER iceOrNot |
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INTEGER iMin, iMax |
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INTEGER jMin, jMax |
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_RL LatentHeat |
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_RL icFrac, opFrac |
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_RL netSW (1:sNx,1:sNy) |
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_RL sFlx (1:sNx,1:sNy,0:2) |
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c _RL tFrzOce(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL dTsurf(1:sNx,1:sNy) |
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|
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_RL uRelWind(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vRelWind(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL windSq(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL cdu, dumArg(4) |
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_RL fsha0(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL evp_0(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL xolw0(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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c _RL ssqt0(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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c _RL q10_0(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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c _RL cdq_0(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL dShdTs(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL dEvdTs(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL dLwdTs(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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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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iMin = 1 |
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iMax = sNx |
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jMin = 1 |
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jMax = sNy |
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LatentHeat = Lfresh + LVapor |
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|
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c DO bj=myByLo(myThid),myByHi(myThid) |
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c DO bi=myBxLo(myThid),myBxHi(myThid) |
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|
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CALL THSICE_GET_OCEAN( |
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I bi, bj, myTime, myIter, myThid ) |
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|
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DO j = 1-OLy, sNy+OLy |
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DO i = 1-OLx, sNx+OLx |
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uRelWind(i,j) = uWind(i,j) |
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vRelWind(i,j) = vWind(i,j) |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_SEAICE |
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IF ( useSEAICE ) THEN |
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DO j = 1-OLy, sNy+OLy |
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DO i = 1-OLx, sNx+OLx |
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uRelWind(i,j) = uRelWind(i,j)-uIce(i,j,bi,bj) |
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vRelWind(i,j) = vRelWind(i,j)-vIce(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_SEAICE */ |
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DO j = jMin,jMax |
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DO i = iMin,iMax |
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windSq(i,j) = ( uRelWind( i ,j)*uRelWind( i ,j) |
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& + uRelWind(i+1,j)*uRelWind(i+1,j) |
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& + vRelWind(i, j )*vRelWind(i, j ) |
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& + vRelWind(i,j+1)*vRelWind(i,j+1) |
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& )*0.5 _d 0 |
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ENDDO |
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ENDDO |
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|
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C 1) compute albedo ; compute netSW |
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CALL THSICE_ALBEDO( |
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I bi, bj, siLo, siHi, sjLo, sjHi, |
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I iMin,iMax, jMin,jMax, |
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I iceMask(siLo,sjLo,bi,bj), iceHeight(siLo,sjLo,bi,bj), |
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I snowHeight(siLo,sjLo,bi,bj), Tsrf(siLo,sjLo,bi,bj), |
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I snowAge(siLo,sjLo,bi,bj), |
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O siceAlb(siLo,sjLo,bi,bj), icAlbNIR(siLo,sjLo,bi,bj), |
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I myTime, myIter, myThid ) |
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|
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DO j = jMin, jMax |
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DO i = iMin, iMax |
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IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN |
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C- surface net SW flux: |
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netSW(i,j) = swDown(i,j) |
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& *(1. _d 0 - siceAlb(i,j,bi,bj)) |
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ELSE |
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netSW(i,j) = swDown(i,j) |
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ENDIF |
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ENDDO |
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ENDDO |
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|
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|
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C 2) compute other flx over seaice, over melting surf |
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C 3) compute other flx over seaice & derivative vs Tsurf, using previous Tsurf |
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DO j = jMin, jMax |
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DO i = iMin, iMax |
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|
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IF ( snowHeight(i,j,bi,bj).GT.3. _d -1 ) THEN |
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iceornot=2 |
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ELSE |
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iceornot=1 |
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ENDIF |
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Tsurf(i,j) = 0. |
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CALL CHEAPAML_COARE3_FLUX( |
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I i, j, bi, bj, iceOrNot, |
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I Tsurf, windSq, |
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O fsha0(i,j), flha(i,j), evp_0(i,j), xolw0(i,j), |
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O ssqt(i,j), q100(i,j), cdq(i,j), cdu, |
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O dumArg(1), dumArg(2), dumArg(3), dumArg(4), |
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I myIter, myThid ) |
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sFlx(i,j,0) = lwDown(i,j)- xolw0(i,j) |
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& - fsha0(i,j) - evp_0(i,j)*LatentHeat |
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|
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Tsurf(i,j) = Tsrf(i,j,bi,bj) |
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CALL CHEAPAML_COARE3_FLUX( |
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I i, j, bi, bj, iceOrNot, |
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I Tsurf, windSq, |
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O fsha(i,j), flha(i,j), evp(i,j), xolw(i,j), |
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O ssqt(i,j), q100(i,j), cdq(i,j), cdu, |
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O dShdTs(i,j), dEvdTs(i,j), dLwdTs(i,j), dumArg(4), |
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I myIter, myThid ) |
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sFlx(i,j,1) = lwDown(i,j)- xolw(i,j) |
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& - fsha(i,j) - evp(i,j)*LatentHeat |
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sFlx(i,j,2) = -dLwdTs(i,j) |
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& - dShdTs(i,j) - dEvdTs(i,j)*LatentHeat |
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ENDDO |
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ENDDO |
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|
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C 4) solve for surf & seaice temp |
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C-- needs to fill in snowPrc, ( & prcAtm ? ) |
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C-- note: this S/R assumes No overlap |
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CALL THSICE_IMPL_TEMP( |
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I netSW, sFlx, |
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O dTsurf, |
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I bi, bj, myTime, myIter, myThid ) |
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|
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C 5) update surf fluxes |
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DO j = jMin, jMax |
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DO i = iMin, iMax |
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iceFrac(i,j) = iceMask(i,j,bi,bj) |
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sw2oce (i,j) = icFlxSW(i,j,bi,bj) |
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IF ( dTsurf(i,j) .GT. 999. ) THEN |
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c dTsurf(J)= tFreeze - Tsurf(J) |
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Tsurf(i,j)= 0. |
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fsha(i,j) = fsha0(i,j) |
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flha(i,j) = evp_0(i,j)*LatentHeat |
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evp(i,j) = evp_0(i,j) |
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xolw(i,j) = xolw0(i,j) |
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ELSE |
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Tsurf(i,j)= Tsurf(i,j)+ dTsurf(i,j) |
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fsha(i,j) = fsha(i,j) + dTsurf(i,j)*dShdTs(i,j) |
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evp(i,j) = evp(i,j) + dTsurf(i,j)*dEvdTs(i,j) |
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flha(i,j) = evp(i,j)*LatentHeat |
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xolw(i,j) = xolw(i,j) + dTsurf(i,j)*dLwdTs(i,j) |
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ENDIF |
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ENDDO |
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ENDDO |
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|
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DO j = jMin, jMax |
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DO i = iMin, iMax |
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c IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN |
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icFrac = iceMask(i,j,bi,bj) |
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opFrac = 1. _d 0 - icFrac |
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C-- Update Fluxes : |
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icFlxAtm(i,j,bi,bj) = netSW(i,j) |
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& + lwDown(i,j)- xolw(i,j) |
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& - fsha(i,j) - evp(i,j)*LVapor |
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icFrwAtm(i,j,bi,bj) = evp(i,j) |
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c ENDIF |
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ENDDO |
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ENDDO |
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|
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c ENDDO |
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c ENDDO |
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|
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#endif /* ALLOW_THSICE */ |
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RETURN |
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END |
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