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heimbach |
1.23 |
C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_calc_thickn.F,v 1.22 2010/10/21 02:10:34 heimbach Exp $ |
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jmc |
1.1 |
C $Name: $ |
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#include "THSICE_OPTIONS.h" |
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CBOP |
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C !ROUTINE: THSICE_CALC_THICKN |
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C !INTERFACE: |
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SUBROUTINE THSICE_CALC_THICKN( |
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heimbach |
1.21 |
I bi, bj, |
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jmc |
1.6 |
I iMin,iMax, jMin,jMax, dBugFlag, |
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I iceMask, tFrz, tOce, v2oc, |
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I snowP, prcAtm, sHeat, flxCnB, |
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U icFrac, hIce, hSnow, tSrf, qIc1, qIc2, |
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U frwAtm, fzMlOc, flx2oc, |
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O frw2oc, fsalt, |
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I myTime, myIter, myThid ) |
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jmc |
1.1 |
C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R THSICE_CALC_THICKN |
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C | o Calculate ice & snow thickness changes |
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C *==========================================================* |
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C \ev |
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jmc |
1.6 |
C ADAPTED FROM: |
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C LANL CICE.v2.0.2 |
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C----------------------------------------------------------------------- |
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C.. thermodynamics (vertical physics) based on M. Winton 3-layer model |
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jmc |
1.17 |
C.. See Bitz, C. M. and W. H. Lipscomb, 1999: An energy-conserving |
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C.. thermodynamic sea ice model for climate study. |
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C.. J. Geophys. Res., 104, 15669 - 15677. |
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jmc |
1.6 |
C.. Winton, M., 1999: "A reformulated three-layer sea ice model." |
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C.. Submitted to J. Atmos. Ocean. Technol. |
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C.. authors Elizabeth C. Hunke and William Lipscomb |
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C.. Fluid Dynamics Group, Los Alamos National Laboratory |
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C----------------------------------------------------------------------- |
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Cc****subroutine thermo_winton(n,fice,fsnow,dqice,dTsfc) |
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C.. Compute temperature change using Winton model with 2 ice layers, of |
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C.. which only the top layer has a variable heat capacity. |
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jmc |
1.1 |
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jmc |
1.9 |
C--------------------------------- |
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C parameters that control the partitioning between lateral (ice area) and |
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C vertical (ice thickness) ice volume changes. |
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jmc |
1.13 |
C a) surface melting and bottom melting (runtime parameter: fracEnMelt): |
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jmc |
1.9 |
C frace is the fraction of available heat that is used for |
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C lateral melting (and 1-frace reduces the thickness ) when |
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jmc |
1.13 |
C o hi < hThinIce & frac > lowIcFrac2 : frace=1 (lateral melting only) |
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C o hThinIce < hi < hThickIce & frac > lowIcFrac1 : frace=fracEnMelt |
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C o hi > hThickIce or frac < lowIcFrac1 : frace=0 (thinning only) |
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jmc |
1.9 |
C b) ocean freezing (and ice forming): |
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jmc |
1.13 |
C - conductive heat flux (below sea-ice) always increases thickness. |
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C - under sea-ice, freezing potential (x iceFraction) is used to increase ice |
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C thickness or ice fraction (lateral growth), according to: |
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C o hi < hThinIce : use freezing potential to grow ice vertically; |
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C o hThinIce < hi < hThickIce : use partition factor fracEnFreez for lateral growth |
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c and (1-fracEnFreez) to increase thickness. |
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C o hi > hThickIce : use all freezing potential to grow ice laterally |
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C (up to areaMax) |
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C - over open ocean, use freezing potential [x(1-iceFraction)] to grow ice laterally |
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C - lateral growth forms ice of the same or =hNewIceMax thickness, the less of the 2. |
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C - starts to form sea-ice over fraction iceMaskMin, as minimum ice-volume is reached |
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1.9 |
C--------------------------------- |
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jmc |
1.1 |
C !USES: |
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IMPLICIT NONE |
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C == Global variables === |
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mlosch |
1.18 |
#include "SIZE.h" |
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jmc |
1.4 |
#include "EEPARAMS.h" |
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jmc |
1.1 |
#include "THSICE_SIZE.h" |
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#include "THSICE_PARAMS.h" |
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heimbach |
1.7 |
#ifdef ALLOW_AUTODIFF_TAMC |
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# include "tamc.h" |
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# include "tamc_keys.h" |
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#endif |
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1.1 |
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine Arguments == |
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jmc |
1.6 |
C bi,bj :: tile indices |
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C iMin,iMax :: computation domain: 1rst index range |
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C jMin,jMax :: computation domain: 2nd index range |
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C dBugFlag :: allow to print debugging stuff (e.g. on 1 grid point). |
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C--- Input: |
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C iceMask :: sea-ice fractional mask [0-1] |
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mlosch |
1.18 |
C tFrz :: sea-water freezing temperature [oC] (function of S) |
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C tOce :: surface level oceanic temperature [oC] |
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C v2oc :: square of ocean surface-level velocity [m2/s2] |
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C snowP :: snow precipitation [kg/m2/s] |
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C prcAtm :: total precip from the atmosphere [kg/m2/s] |
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C sHeat :: surf heating flux left to melt snow or ice (= Atmos-conduction) |
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C flxCnB :: heat flux conducted through the ice to bottom surface |
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jmc |
1.6 |
C--- Modified (input&output): |
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mlosch |
1.18 |
C icFrac :: fraction of grid area covered in ice |
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C hIce :: ice height [m] |
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C hSnow :: snow height [m] |
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C tSrf :: surface (ice or snow) temperature |
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jmc |
1.6 |
C qIc1 (qicen) :: ice enthalpy (J/kg), 1rst level |
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C qIc2 (qicen) :: ice enthalpy (J/kg), 2nd level |
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C frwAtm (evpAtm):: evaporation to the atmosphere [kg/m2/s] (>0 if evaporate) |
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mlosch |
1.18 |
C fzMlOc :: ocean mixed-layer freezing/melting potential [W/m2] |
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C flx2oc :: net heat flux to ocean [W/m2] (> 0 downward) |
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jmc |
1.6 |
C--- Output |
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mlosch |
1.18 |
C frw2oc :: Total fresh water flux to ocean [kg/m2/s] (> 0 downward) |
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C fsalt :: salt flux to ocean [g/m2/s] (> 0 downward) |
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jmc |
1.6 |
C--- Input: |
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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 Id number |
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INTEGER bi,bj |
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INTEGER iMin, iMax |
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INTEGER jMin, jMax |
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LOGICAL dBugFlag |
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heimbach |
1.21 |
_RL iceMask(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL tFrz (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL tOce (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL v2oc (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL snowP (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL prcAtm (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL sHeat (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL flxCnB (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL icFrac (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL hIce (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL hSnow (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL tSrf (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL qIc1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL qIc2 (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL frwAtm (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL fzMlOc (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL flx2oc (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL frw2oc (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL fsalt (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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jmc |
1.6 |
_RL myTime |
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INTEGER myIter |
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INTEGER 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--- local copy of input/output argument list variables (see description above) |
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mlosch |
1.18 |
_RL qicen(1-Olx:sNx+Olx,1-Oly:sNy+Oly,nlyr) |
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jmc |
1.16 |
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jmc |
1.1 |
C == Local Variables == |
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jmc |
1.16 |
C i,j,k :: loop indices |
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C rec_nlyr :: reciprocal of number of ice layers (real value) |
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mlosch |
1.18 |
C evapLoc :: evaporation over snow/ice [kg/m2/s] (>0 if evaporate) |
145 |
jmc |
1.16 |
C Fbot :: oceanic heat flux used to melt/form ice [W/m2] |
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C etop :: energy for top melting (J m-2) |
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C ebot :: energy for bottom melting (J m-2) |
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C etope :: energy (from top) for lateral melting (J m-2) |
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C ebote :: energy (from bottom) for lateral melting (J m-2) |
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C extend :: total energy for lateral melting (J m-2) |
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C hnew(nlyr) :: new ice layer thickness (m) |
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C hlyr :: individual ice layer thickness (m) |
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C dhi :: change in ice thickness |
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C dhs :: change in snow thickness |
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C rq :: rho * q for a layer |
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C rqh :: rho * q * h for a layer |
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C qbot :: enthalpy for new ice at bottom surf (J/kg) |
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C dt :: timestep |
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C esurp :: surplus energy from melting (J m-2) |
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C mwater0 :: fresh water mass gained/lost (kg/m^2) |
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C msalt0 :: salt gained/lost (kg/m^2) |
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C freshe :: fresh water gain from extension melting |
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C salte :: salt gained from extension melting |
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C lowIcFrac1 :: ice-fraction lower limit above which partial (lowIcFrac1) |
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C lowIcFrac2 :: or full (lowIcFrac2) lateral melting is allowed. |
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mlosch |
1.18 |
C from THSICE_RESHAPE_LAYERS |
167 |
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C f1 :: Fraction of upper layer ice in new layer |
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C qh1, qh2 :: qice*h for layers 1 and 2 |
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C qhtot :: qh1 + qh2 |
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C q2tmp :: Temporary value of qice for layer 2 |
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jmc |
1.16 |
INTEGER i,j,k |
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mlosch |
1.18 |
_RL rec_nlyr |
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_RL evapLoc(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL Fbot (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL etop (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL ebot (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL etope (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL ebote (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL esurp (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL extend |
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_RL hnew (1-Olx:sNx+Olx,1-Oly:sNy+Oly,nlyr) |
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_RL hlyr |
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_RL dhi |
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_RL dhs |
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_RL rq |
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_RL rqh |
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_RL qbot |
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_RL dt |
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_RL mwater0 (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL msalt0 (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL freshe |
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_RL salte |
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jmc |
1.16 |
_RL lowIcFrac1, lowIcFrac2 |
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mlosch |
1.18 |
_RL f1 |
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_RL qh1, qh2 |
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_RL qhtot |
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_RL q2tmp |
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#ifdef CHECK_ENERGY_CONSERV |
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_RL qaux(nlyr) |
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#endif /* CHECK_ENERGY_CONSERV */ |
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jmc |
1.1 |
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_RL ustar, cpchr |
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jmc |
1.16 |
_RL chi |
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jmc |
1.1 |
_RL frace, rs, hq |
205 |
jmc |
1.14 |
#ifdef THSICE_FRACEN_POWERLAW |
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INTEGER powerLaw |
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_RL rec_pLaw |
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_RL c1Mlt, c2Mlt, aMlt, hMlt |
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_RL c1Frz, c2Frz, aFrz, hFrz |
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mlosch |
1.18 |
_RL enFrcMlt(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL xxMlt, tmpMlt |
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_RL enFrcFrz(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL xxFrz, tmpFrz |
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jmc |
1.14 |
#endif |
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jmc |
1.6 |
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C- define grid-point location where to print debugging values |
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#include "THSICE_DEBUG.h" |
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jmc |
1.1 |
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1010 FORMAT(A,I3,3F8.3) |
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1020 FORMAT(A,1P4E11.3) |
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jmc |
1.6 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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224 |
heimbach |
1.20 |
#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 |
234 |
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& + act4*max1*max2*max3 |
235 |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
236 |
heimbach |
1.7 |
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237 |
jmc |
1.6 |
rec_nlyr = nlyr |
238 |
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rec_nlyr = 1. _d 0 / rec_nlyr |
239 |
jmc |
1.1 |
dt = thSIce_deltaT |
240 |
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241 |
jmc |
1.13 |
C for now, use hard coded threshold (iceMaskMin +1.% and +10.%) |
242 |
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lowIcFrac1 = iceMaskMin*1.01 _d 0 |
243 |
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lowIcFrac2 = iceMaskMin*1.10 _d 0 |
244 |
jmc |
1.14 |
#ifdef THSICE_FRACEN_POWERLAW |
245 |
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IF ( powerLawExp2 .GE. 1 ) THEN |
246 |
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powerLaw = 1 + 2**powerLawExp2 |
247 |
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rec_pLaw = powerLaw |
248 |
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rec_pLaw = 1. _d 0 / rec_pLaw |
249 |
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C- Coef for melting: |
250 |
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C lateral-melting energy fraction = fracEnMelt - [ aMlt*(hi-hMlt) ]^powerLaw |
251 |
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c1Mlt = fracEnMelt**rec_pLaw |
252 |
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c2Mlt = (1. _d 0 - fracEnMelt)**rec_pLaw |
253 |
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aMlt = (c1Mlt+c2Mlt)/(hThickIce-hThinIce) |
254 |
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hMlt = hThinIce+c2Mlt/aMlt |
255 |
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C- Coef for freezing: |
256 |
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C thickening energy fraction = fracEnFreez - [ aFrz*(hi-hFrz) ]^powerLaw |
257 |
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c1Frz = fracEnFreez**rec_pLaw |
258 |
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c2Frz = (1. _d 0 -fracEnFreez)**rec_pLaw |
259 |
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aFrz = (c1Frz+c2Frz)/(hThickIce-hThinIce) |
260 |
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hFrz = hThinIce+c2Frz/aFrz |
261 |
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ELSE |
262 |
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C- Linear relation |
263 |
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powerLaw = 1 |
264 |
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aMlt = -1. _d 0 /(hThickIce-hThinIce) |
265 |
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hMlt = hThickIce |
266 |
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aFrz = -1. _d 0 /(hThickIce-hThinIce) |
267 |
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hFrz = hThickIce |
268 |
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ENDIF |
269 |
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#endif /* THSICE_FRACEN_POWERLAW */ |
270 |
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271 |
jmc |
1.13 |
|
272 |
mlosch |
1.18 |
C initialise local arrays |
273 |
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DO j=1-Oly,sNy+Oly |
274 |
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DO i=1-Olx,sNx+Olx |
275 |
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evapLoc(i,j) = 0. _d 0 |
276 |
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Fbot (i,j) = 0. _d 0 |
277 |
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etop (i,j) = 0. _d 0 |
278 |
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ebot (i,j) = 0. _d 0 |
279 |
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etope (i,j) = 0. _d 0 |
280 |
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ebote (i,j) = 0. _d 0 |
281 |
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esurp (i,j) = 0. _d 0 |
282 |
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mwater0(i,j) = 0. _d 0 |
283 |
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msalt0 (i,j) = 0. _d 0 |
284 |
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#ifdef THSICE_FRACEN_POWERLAW |
285 |
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enFrcMlt(i,j)= 0. _d 0 |
286 |
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enFrcFrz(i,j)= 0. _d 0 |
287 |
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#endif |
288 |
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ENDDO |
289 |
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ENDDO |
290 |
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DO k = 1,nlyr |
291 |
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DO j=1-Oly,sNy+Oly |
292 |
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DO i=1-Olx,sNx+Olx |
293 |
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hnew(i,j,k) = 0. _d 0 |
294 |
|
|
ENDDO |
295 |
|
|
ENDDO |
296 |
|
|
ENDDO |
297 |
|
|
|
298 |
jmc |
1.6 |
DO j = jMin, jMax |
299 |
|
|
DO i = iMin, iMax |
300 |
mlosch |
1.18 |
CML#ifdef ALLOW_AUTODIFF_TAMC |
301 |
|
|
CML ikey_1 = i |
302 |
|
|
CML & + sNx*(j-1) |
303 |
|
|
CML & + sNx*sNy*act1 |
304 |
|
|
CML & + sNx*sNy*max1*act2 |
305 |
|
|
CML & + sNx*sNy*max1*max2*act3 |
306 |
|
|
CML & + sNx*sNy*max1*max2*max3*act4 |
307 |
|
|
CML#endif /* ALLOW_AUTODIFF_TAMC */ |
308 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
309 |
|
|
CMLCADJ STORE frwatm(i,j) = comlev1_thsice_1, key=ikey_1 |
310 |
|
|
CMLCADJ STORE fzmloc(i,j) = comlev1_thsice_1, key=ikey_1 |
311 |
|
|
CMLCADJ STORE hice(i,j) = comlev1_thsice_1, key=ikey_1 |
312 |
|
|
CMLCADJ STORE hsnow(i,j) = comlev1_thsice_1, key=ikey_1 |
313 |
|
|
CMLCADJ STORE icfrac(i,j) = comlev1_thsice_1, key=ikey_1 |
314 |
|
|
CMLCADJ STORE qic1(i,j) = comlev1_thsice_1, key=ikey_1 |
315 |
|
|
CMLCADJ STORE qic2(i,j) = comlev1_thsice_1, key=ikey_1 |
316 |
|
|
CML#endif |
317 |
heimbach |
1.7 |
|
318 |
jmc |
1.6 |
IF (iceMask(i,j).GT.0. _d 0) THEN |
319 |
mlosch |
1.18 |
qicen(i,j,1)= qIc1(i,j) |
320 |
|
|
qicen(i,j,2)= qIc2(i,j) |
321 |
jmc |
1.6 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
322 |
jmc |
1.1 |
C initialize energies |
323 |
mlosch |
1.18 |
esurp(i,j) = 0. _d 0 |
324 |
jmc |
1.1 |
|
325 |
mlosch |
1.18 |
c make a local copy of evaporation |
326 |
|
|
evapLoc(i,j) = frwAtm(i,j) |
327 |
jmc |
1.1 |
|
328 |
mlosch |
1.18 |
C------------------------------------------------------------------------ |
329 |
|
|
C-- Compute growth and/or melting at the top and bottom surfaces |
330 |
|
|
C------------------------------------------------------------------------ |
331 |
jmc |
1.1 |
|
332 |
jmc |
1.14 |
#ifdef THSICE_FRACEN_POWERLAW |
333 |
mlosch |
1.18 |
xxMlt = aMlt*(hIce(i,j)-hMlt) |
334 |
|
|
xxFrz = aFrz*(hIce(i,j)-hFrz) |
335 |
jmc |
1.14 |
c-- |
336 |
|
|
IF ( powerLawExp2 .GE. 1 ) THEN |
337 |
mlosch |
1.18 |
#ifdef TARGET_NEC_SX |
338 |
|
|
C avoid the short inner loop that cannot be vectorized |
339 |
|
|
xxMlt = xxMlt**powerLaw |
340 |
|
|
xxFrz = xxFrz**powerLaw |
341 |
|
|
#else |
342 |
|
|
tmpMlt = xxMlt |
343 |
|
|
tmpFrz = xxFrz |
344 |
|
|
DO k=1,powerLawExp2 |
345 |
|
|
tmpMlt = tmpMlt*tmpMlt |
346 |
|
|
tmpFrz = tmpFrz*tmpFrz |
347 |
|
|
ENDDO |
348 |
|
|
xxMlt = xxMlt*tmpMlt |
349 |
|
|
xxFrz = xxFrz*tmpFrz |
350 |
|
|
#endif /* TARGET_NEC_SX */ |
351 |
|
|
xxMlt = fracEnMelt -xxMlt |
352 |
|
|
xxFrz = fracEnFreez-xxFrz |
353 |
jmc |
1.14 |
ENDIF |
354 |
mlosch |
1.18 |
enFrcMlt(i,j) = MAX( 0. _d 0, MIN( xxMlt, 1. _d 0 ) ) |
355 |
|
|
enFrcFrz(i,j) = MAX( 0. _d 0, MIN( xxFrz, 1. _d 0 ) ) |
356 |
jmc |
1.14 |
#endif /* THSICE_FRACEN_POWERLAW */ |
357 |
|
|
|
358 |
mlosch |
1.18 |
IF (fzMlOc(i,j).GE. 0. _d 0) THEN |
359 |
jmc |
1.1 |
C !----------------------------------------------------------------- |
360 |
|
|
C ! freezing conditions |
361 |
|
|
C !----------------------------------------------------------------- |
362 |
mlosch |
1.18 |
Fbot(i,j) = fzMlOc(i,j) |
363 |
|
|
IF ( icFrac(i,j).LT.iceMaskMax ) THEN |
364 |
jmc |
1.14 |
#ifdef THSICE_FRACEN_POWERLAW |
365 |
mlosch |
1.18 |
Fbot(i,j) = enFrcFrz(i,j)*fzMlOc(i,j) |
366 |
jmc |
1.14 |
#else /* THSICE_FRACEN_POWERLAW */ |
367 |
mlosch |
1.18 |
IF (hIce(i,j).GT.hThickIce) THEN |
368 |
|
|
C if higher than hThickIce, use all fzMlOc energy to grow extra ice |
369 |
|
|
Fbot(i,j) = 0. _d 0 |
370 |
|
|
ELSEIF (hIce(i,j).GE.hThinIce) THEN |
371 |
jmc |
1.10 |
C between hThinIce & hThickIce, use partition factor fracEnFreez |
372 |
mlosch |
1.18 |
Fbot(i,j) = (1. _d 0 - fracEnFreez)*fzMlOc(i,j) |
373 |
|
|
ENDIF |
374 |
jmc |
1.14 |
#endif /* THSICE_FRACEN_POWERLAW */ |
375 |
mlosch |
1.18 |
ENDIF |
376 |
|
|
ELSE |
377 |
jmc |
1.1 |
C !----------------------------------------------------------------- |
378 |
|
|
C ! melting conditions |
379 |
|
|
C !----------------------------------------------------------------- |
380 |
jmc |
1.16 |
C for no currents: |
381 |
mlosch |
1.18 |
ustar = 5. _d -2 |
382 |
jmc |
1.1 |
C frictional velocity between ice and water |
383 |
heimbach |
1.22 |
IF (v2oc(i,j) .NE. 0.) |
384 |
|
|
& ustar = SQRT(0.00536 _d 0*v2oc(i,j)) |
385 |
mlosch |
1.18 |
ustar=max(5. _d -3,ustar) |
386 |
|
|
cpchr =cpWater*rhosw*bMeltCoef |
387 |
|
|
Fbot(i,j) = cpchr*(tFrz(i,j)-tOce(i,j))*ustar |
388 |
|
|
C fzMlOc < Fbot < 0 |
389 |
|
|
Fbot(i,j) = max(Fbot(i,j),fzMlOc(i,j)) |
390 |
|
|
Fbot(i,j) = min(Fbot(i,j),0. _d 0) |
391 |
|
|
ENDIF |
392 |
jmc |
1.1 |
|
393 |
|
|
C mass of fresh water and salt initially present in ice |
394 |
mlosch |
1.18 |
mwater0(i,j) = rhos*hSnow(i,j) + rhoi*hIce(i,j) |
395 |
|
|
msalt0 (i,j) = rhoi*hIce(i,j)*saltIce |
396 |
jmc |
1.1 |
|
397 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
398 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
399 |
jmc |
1.19 |
& 'ThSI_CALC_TH: evpAtm, fzMlOc, Fbot =', |
400 |
mlosch |
1.18 |
& frwAtm(i,j),fzMlOc(i,j),Fbot(i,j) |
401 |
jmc |
1.6 |
#endif |
402 |
jmc |
1.19 |
C endif iceMask > 0 |
403 |
mlosch |
1.18 |
ENDIF |
404 |
|
|
C end i/j-loops |
405 |
|
|
ENDDO |
406 |
|
|
ENDDO |
407 |
jmc |
1.1 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
408 |
mlosch |
1.18 |
DO j = jMin, jMax |
409 |
|
|
DO i = iMin, iMax |
410 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
411 |
jmc |
1.1 |
|
412 |
mlosch |
1.18 |
C Compute energy available for melting/growth. |
413 |
jmc |
1.1 |
|
414 |
jmc |
1.14 |
#ifdef THSICE_FRACEN_POWERLAW |
415 |
mlosch |
1.18 |
IF ( fracEnMelt.EQ.0. _d 0 ) THEN |
416 |
|
|
frace = 0. _d 0 |
417 |
|
|
ELSE |
418 |
|
|
frace = (icFrac(i,j) - lowIcFrac1)/(lowIcFrac2-iceMaskMin) |
419 |
|
|
frace = MIN( enFrcMlt(i,j), MAX( 0. _d 0, frace ) ) |
420 |
|
|
ENDIF |
421 |
jmc |
1.14 |
#else /* THSICE_FRACEN_POWERLAW */ |
422 |
mlosch |
1.18 |
IF ( hIce(i,j).GT.hThickIce .OR. fracEnMelt.EQ.0. _d 0 ) THEN |
423 |
jmc |
1.10 |
C above certain height (or when no ice fractionation), only melt from top |
424 |
mlosch |
1.18 |
frace = 0. _d 0 |
425 |
|
|
ELSEIF (hIce(i,j).LT.hThinIce) THEN |
426 |
jmc |
1.1 |
C below a certain height, all energy goes to changing ice extent |
427 |
mlosch |
1.18 |
frace = 1. _d 0 |
428 |
|
|
ELSE |
429 |
|
|
frace = fracEnMelt |
430 |
|
|
ENDIF |
431 |
jmc |
1.13 |
C Reduce lateral melting when ice fraction is low : the purpose is to avoid |
432 |
|
|
C disappearing of (up to hThinIce thick) sea-ice by over doing lateral melting |
433 |
mlosch |
1.18 |
C (which would bring icFrac below iceMaskMin). |
434 |
|
|
IF ( icFrac(i,j).LE.lowIcFrac1 ) THEN |
435 |
|
|
frace = 0. _d 0 |
436 |
|
|
ELSEIF (icFrac(i,j).LE.lowIcFrac2 ) THEN |
437 |
|
|
frace = MIN( frace, fracEnMelt ) |
438 |
|
|
ENDIF |
439 |
jmc |
1.14 |
#endif /* THSICE_FRACEN_POWERLAW */ |
440 |
jmc |
1.1 |
|
441 |
mlosch |
1.18 |
c IF (tSrf(i,j) .EQ. 0. _d 0 .AND. sHeat(i,j).GT.0. _d 0) THEN |
442 |
|
|
IF ( sHeat(i,j).GT.0. _d 0 ) THEN |
443 |
|
|
etop(i,j) = (1. _d 0-frace)*sHeat(i,j) * dt |
444 |
|
|
etope(i,j) = frace*sHeat(i,j) * dt |
445 |
|
|
ELSE |
446 |
|
|
etop(i,j) = 0. _d 0 |
447 |
|
|
etope(i,j) = 0. _d 0 |
448 |
|
|
C jmc: found few cases where tSrf=0 & sHeat < 0 : add this line to conserv energy: |
449 |
|
|
esurp(i,j) = sHeat(i,j) * dt |
450 |
|
|
ENDIF |
451 |
jmc |
1.6 |
C-- flux at the base of sea-ice: |
452 |
jmc |
1.1 |
C conduction H.flx= flxCnB (+ =down); oceanic turbulent H.flx= Fbot (+ =down). |
453 |
|
|
C- ==> energy available(+ => melt)= (flxCnB-Fbot)*dt |
454 |
mlosch |
1.18 |
c IF (fzMlOc(i,j).LT.0. _d 0) THEN |
455 |
|
|
c ebot(i,j) = (1. _d 0-frace)*(flxCnB-Fbot(i,j)) * dt |
456 |
|
|
c ebote(i,j) = frace*(flxCnB-Fbot(i,j)) * dt |
457 |
jmc |
1.5 |
c ELSE |
458 |
mlosch |
1.18 |
c ebot(i,j) = (flxCnB-Fbot(i,j)) * dt |
459 |
|
|
c ebote(i,j) = 0. _d 0 |
460 |
jmc |
1.5 |
c ENDIF |
461 |
jmc |
1.1 |
C- original formulation(above): Loose energy when flxCnB < Fbot < 0 |
462 |
mlosch |
1.18 |
ebot(i,j) = (flxCnB(i,j)-Fbot(i,j)) * dt |
463 |
|
|
IF (ebot(i,j).GT.0. _d 0) THEN |
464 |
|
|
ebote(i,j) = frace*ebot(i,j) |
465 |
|
|
ebot(i,j) = ebot(i,j)-ebote(i,j) |
466 |
|
|
ELSE |
467 |
|
|
ebote(i,j) = 0. _d 0 |
468 |
|
|
ENDIF |
469 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
470 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
471 |
|
|
& 'ThSI_CALC_TH: etop,etope,ebot,ebote=', |
472 |
|
|
& etop(i,j),etope(i,j),ebot(i,j),ebote(i,j) |
473 |
jmc |
1.6 |
#endif |
474 |
jmc |
1.19 |
C endif iceMask > 0 |
475 |
mlosch |
1.18 |
ENDIF |
476 |
|
|
C end i/j-loops |
477 |
|
|
ENDDO |
478 |
|
|
ENDDO |
479 |
jmc |
1.1 |
|
480 |
mlosch |
1.18 |
C Initialize layer thicknesses. Divide total thickness equally between |
481 |
|
|
C layers |
482 |
jmc |
1.5 |
DO k = 1, nlyr |
483 |
mlosch |
1.18 |
DO j = jMin, jMax |
484 |
|
|
DO i = iMin, iMax |
485 |
|
|
hnew(i,j,k) = hIce(i,j) * rec_nlyr |
486 |
|
|
ENDDO |
487 |
|
|
ENDDO |
488 |
jmc |
1.5 |
ENDDO |
489 |
jmc |
1.1 |
|
490 |
mlosch |
1.18 |
DO j = jMin, jMax |
491 |
|
|
DO i = iMin, iMax |
492 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
493 |
|
|
CMLCADJ STORE etop(i,j) = comlev1_thsice_1, key=ikey_1 |
494 |
|
|
CML#endif |
495 |
|
|
IF (iceMask(i,j) .GT. 0. _d 0 .AND. |
496 |
|
|
& etop(i,j) .GT. 0. _d 0 .AND. |
497 |
|
|
& hSnow(i,j) .GT. 0. _d 0) THEN |
498 |
|
|
|
499 |
|
|
C Make sure internal ice temperatures do not exceed Tmlt. |
500 |
|
|
C If they do, then eliminate the layer. (Dont think this will happen |
501 |
|
|
C for reasonable values of i0.) |
502 |
|
|
C Top melt: snow, then ice. |
503 |
|
|
rq = rhos * qsnow |
504 |
|
|
rqh = rq * hSnow(i,j) |
505 |
|
|
IF (etop(i,j) .LT. rqh) THEN |
506 |
|
|
hSnow(i,j) = hSnow(i,j) - etop(i,j)/rq |
507 |
|
|
etop(i,j) = 0. _d 0 |
508 |
|
|
ELSE |
509 |
|
|
etop(i,j) = etop(i,j) - rqh |
510 |
|
|
hSnow(i,j) = 0. _d 0 |
511 |
jmc |
1.5 |
ENDIF |
512 |
mlosch |
1.18 |
C endif iceMask > 0, etc. |
513 |
|
|
ENDIF |
514 |
|
|
C end i/j-loops |
515 |
|
|
ENDDO |
516 |
|
|
ENDDO |
517 |
|
|
C two layers of ice |
518 |
|
|
DO k = 1, nlyr |
519 |
|
|
DO j = jMin, jMax |
520 |
|
|
DO i = iMin, iMax |
521 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
522 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
523 |
|
|
CML ikey_2 = k |
524 |
|
|
CML & + nlyr*(i-1) |
525 |
|
|
CML & + nlyr*sNx*(j-1) |
526 |
|
|
CML & + nlyr*sNx*sNy*act1 |
527 |
|
|
CML & + nlyr*sNx*sNy*max1*act2 |
528 |
|
|
CML & + nlyr*sNx*sNy*max1*max2*act3 |
529 |
|
|
CML & + nlyr*sNx*sNy*max1*max2*max3*act4 |
530 |
|
|
CML#endif |
531 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
532 |
|
|
CMLCADJ STORE etop(i,j) = comlev1_thsice_2, key=ikey_2 |
533 |
|
|
CMLCADJ STORE hnew(i,j,k) = comlev1_thsice_2, key=ikey_2 |
534 |
|
|
CML#endif |
535 |
|
|
IF (etop(i,j) .GT. 0. _d 0) THEN |
536 |
|
|
rq = rhoi * qicen(i,j,k) |
537 |
|
|
rqh = rq * hnew(i,j,k) |
538 |
|
|
IF (etop(i,j) .LT. rqh) THEN |
539 |
|
|
hnew(i,j,k) = hnew(i,j,k) - etop(i,j) / rq |
540 |
|
|
etop(i,j) = 0. _d 0 |
541 |
|
|
ELSE |
542 |
|
|
etop(i,j) = etop(i,j) - rqh |
543 |
|
|
hnew(i,j,k) = 0. _d 0 |
544 |
|
|
ENDIF |
545 |
|
|
ELSE |
546 |
|
|
etop(i,j)=0. _d 0 |
547 |
|
|
ENDIF |
548 |
jmc |
1.1 |
C If ice is gone and melting energy remains |
549 |
mlosch |
1.18 |
c IF (etop(i,j) .GT. 0. _d 0) THEN |
550 |
jmc |
1.5 |
c WRITE (6,*) 'QQ All ice melts from top ', i,j |
551 |
mlosch |
1.18 |
c hIce(i,j)=0. _d 0 |
552 |
jmc |
1.1 |
c go to 200 |
553 |
jmc |
1.5 |
c ENDIF |
554 |
jmc |
1.1 |
|
555 |
jmc |
1.19 |
C endif iceMask > 0 |
556 |
mlosch |
1.18 |
ENDIF |
557 |
|
|
C end i/j-loops |
558 |
|
|
ENDDO |
559 |
|
|
ENDDO |
560 |
|
|
C end k-loop |
561 |
|
|
ENDDO |
562 |
jmc |
1.1 |
|
563 |
mlosch |
1.18 |
DO j = jMin, jMax |
564 |
|
|
DO i = iMin, iMax |
565 |
|
|
IF (iceMask(i,j).GT.0. _d 0 .AND. ebot(i,j) .LT. 0. _d 0) THEN |
566 |
jmc |
1.6 |
C Bottom melt/growth. |
567 |
jmc |
1.1 |
C Compute enthalpy of new ice growing at bottom surface. |
568 |
mlosch |
1.18 |
qbot = -cpIce *tFrz(i,j) + Lfresh |
569 |
|
|
dhi = -ebot(i,j) / (qbot * rhoi) |
570 |
|
|
ebot(i,j) = 0. _d 0 |
571 |
heimbach |
1.7 |
cph k = nlyr |
572 |
mlosch |
1.18 |
CML#ifdef ALLOW_AUTODIFF_TAMC |
573 |
|
|
CMLCADJ STORE hnew(i,j,:) = comlev1_thsice_1, key=ikey_1 |
574 |
|
|
CMLCADJ STORE qicen(i,j,:) = comlev1_thsice_1, key=ikey_1 |
575 |
|
|
CML#endif |
576 |
jmc |
1.19 |
qicen(i,j,nlyr) = |
577 |
mlosch |
1.18 |
& (hnew(i,j,nlyr)*qicen(i,j,nlyr)+dhi*qbot) / |
578 |
|
|
& (hnew(i,j,nlyr)+dhi) |
579 |
|
|
hnew(i,j,nlyr) = hnew(i,j,nlyr) + dhi |
580 |
|
|
|
581 |
|
|
C endif iceMask > 0 and ebot < 0 |
582 |
|
|
ENDIF |
583 |
|
|
C end i/j-loops |
584 |
|
|
ENDDO |
585 |
|
|
ENDDO |
586 |
heimbach |
1.20 |
|
587 |
|
|
#ifdef ALLOW_AUTODIFF_TAMC |
588 |
|
|
CADJ STORE etop(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
589 |
|
|
CADJ STORE ebot(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
590 |
|
|
CADJ STORE hnew(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
591 |
|
|
CADJ STORE qicen(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
592 |
|
|
#endif |
593 |
|
|
|
594 |
mlosch |
1.18 |
DO k = nlyr, 1, -1 |
595 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
596 |
|
|
CML ikey_2 = (nlyr-k+1) |
597 |
|
|
CML & + nlyr*(i-1) |
598 |
|
|
CML & + nlyr*sNx*(j-1) |
599 |
|
|
CML & + nlyr*sNx*sNy*act1 |
600 |
|
|
CML & + nlyr*sNx*sNy*max1*act2 |
601 |
|
|
CML & + nlyr*sNx*sNy*max1*max2*act3 |
602 |
|
|
CML & + nlyr*sNx*sNy*max1*max2*max3*act4 |
603 |
|
|
CML#endif |
604 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
605 |
|
|
CMLCADJ STORE ebot(i,j) = comlev1_thsice_2, key=ikey_2 |
606 |
|
|
CMLCADJ STORE hnew(i,j,k) = comlev1_thsice_2, key=ikey_2 |
607 |
|
|
CMLCADJ STORE qicen(i,j,k) = comlev1_thsice_2, key=ikey_2 |
608 |
|
|
CML#endif |
609 |
|
|
DO j = jMin, jMax |
610 |
|
|
DO i = iMin, iMax |
611 |
|
|
IF (iceMask(i,j) .GT. 0. _d 0 .AND. |
612 |
jmc |
1.19 |
& ebot(i,j) .GT. 0. _d 0 .AND. |
613 |
mlosch |
1.18 |
& hnew(i,j,k) .GT. 0. _d 0) THEN |
614 |
|
|
rq = rhoi * qicen(i,j,k) |
615 |
|
|
rqh = rq * hnew(i,j,k) |
616 |
|
|
IF (ebot(i,j) .LT. rqh) THEN |
617 |
|
|
hnew(i,j,k) = hnew(i,j,k) - ebot(i,j) / rq |
618 |
|
|
ebot(i,j) = 0. _d 0 |
619 |
|
|
ELSE |
620 |
|
|
ebot(i,j) = ebot(i,j) - rqh |
621 |
|
|
hnew(i,j,k) = 0. _d 0 |
622 |
|
|
ENDIF |
623 |
|
|
C endif iceMask > 0 etc. |
624 |
|
|
ENDIF |
625 |
|
|
C end i/j-loops |
626 |
|
|
ENDDO |
627 |
|
|
ENDDO |
628 |
|
|
C end k-loop |
629 |
|
|
ENDDO |
630 |
|
|
C If ice melts completely and snow is left, remove the snow with |
631 |
|
|
C energy from the mixed layer |
632 |
|
|
DO j = jMin, jMax |
633 |
|
|
DO i = iMin, iMax |
634 |
jmc |
1.19 |
IF (iceMask(i,j) .GT. 0. _d 0 .AND. |
635 |
|
|
& ebot(i,j) .GT. 0. _d 0 .AND. |
636 |
mlosch |
1.18 |
& hSnow(i,j) .GT. 0. _d 0) THEN |
637 |
|
|
rq = rhos * qsnow |
638 |
|
|
rqh = rq * hSnow(i,j) |
639 |
|
|
IF (ebot(i,j) .LT. rqh) THEN |
640 |
|
|
hSnow(i,j) = hSnow(i,j) - ebot(i,j) / rq |
641 |
|
|
ebot(i,j) = 0. _d 0 |
642 |
|
|
ELSE |
643 |
|
|
ebot(i,j) = ebot(i,j) - rqh |
644 |
|
|
hSnow(i,j) = 0. _d 0 |
645 |
jmc |
1.5 |
ENDIF |
646 |
mlosch |
1.18 |
c IF (ebot(i,j) .GT. 0. _d 0) THEN |
647 |
jmc |
1.1 |
c IF (dBug) WRITE(6,*) 'All ice (& snow) melts from bottom' |
648 |
mlosch |
1.18 |
c hIce(i,j)=0. _d 0 |
649 |
jmc |
1.1 |
c go to 200 |
650 |
jmc |
1.5 |
c ENDIF |
651 |
jmc |
1.1 |
|
652 |
mlosch |
1.18 |
C endif iceMask > 0, etc. |
653 |
|
|
ENDIF |
654 |
|
|
C end i/j-loops |
655 |
|
|
ENDDO |
656 |
|
|
ENDDO |
657 |
|
|
DO j = jMin, jMax |
658 |
|
|
DO i = iMin, iMax |
659 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
660 |
jmc |
1.1 |
C Compute new total ice thickness. |
661 |
mlosch |
1.18 |
hIce(i,j) = hnew(i,j,1) + hnew(i,j,2) |
662 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
663 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
664 |
jmc |
1.19 |
& 'ThSI_CALC_TH: etop, ebot, hIce, hSnow =', |
665 |
mlosch |
1.18 |
& etop(i,j), ebot(i,j), hIce(i,j), hSnow(i,j) |
666 |
jmc |
1.6 |
#endif |
667 |
jmc |
1.1 |
|
668 |
mlosch |
1.18 |
C If hIce < hIceMin, melt the ice. |
669 |
jmc |
1.19 |
IF ( hIce(i,j).LT.hIceMin |
670 |
mlosch |
1.18 |
& .AND. (hIce(i,j)+hSnow(i,j)).GT.0. _d 0 ) THEN |
671 |
|
|
esurp(i,j) = esurp(i,j) - rhos*qsnow*hSnow(i,j) |
672 |
|
|
& - rhoi*qicen(i,j,1)*hnew(i,j,1) |
673 |
|
|
& - rhoi*qicen(i,j,2)*hnew(i,j,2) |
674 |
|
|
hIce(i,j) = 0. _d 0 |
675 |
|
|
hSnow(i,j) = 0. _d 0 |
676 |
|
|
tSrf(i,j) = 0. _d 0 |
677 |
|
|
icFrac(i,j) = 0. _d 0 |
678 |
|
|
qicen(i,j,1) = 0. _d 0 |
679 |
|
|
qicen(i,j,2) = 0. _d 0 |
680 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
681 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
682 |
|
|
& 'ThSI_CALC_TH: -1 : esurp=',esurp(i,j) |
683 |
jmc |
1.6 |
#endif |
684 |
mlosch |
1.18 |
ENDIF |
685 |
|
|
|
686 |
jmc |
1.19 |
C endif iceMask > 0 |
687 |
mlosch |
1.18 |
ENDIF |
688 |
|
|
C end i/j-loops |
689 |
|
|
ENDDO |
690 |
|
|
ENDDO |
691 |
heimbach |
1.20 |
|
692 |
mlosch |
1.18 |
DO j = jMin, jMax |
693 |
|
|
DO i = iMin, iMax |
694 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
695 |
jmc |
1.1 |
|
696 |
|
|
C-- do a mass-budget of sea-ice to compute "fresh" = the fresh-water flux |
697 |
|
|
C that is returned to the ocean ; needs to be done before snow/evap |
698 |
jmc |
1.19 |
frw2oc(i,j) = (mwater0(i,j) |
699 |
mlosch |
1.18 |
& - (rhos*hSnow(i,j)+rhoi*hIce(i,j)))/dt |
700 |
jmc |
1.1 |
|
701 |
mlosch |
1.18 |
IF ( hIce(i,j) .LE. 0. _d 0 ) THEN |
702 |
jmc |
1.5 |
C- return snow to the ocean (account for Latent heat of freezing) |
703 |
mlosch |
1.18 |
frw2oc(i,j) = frw2oc(i,j) + snowP(i,j) |
704 |
|
|
flx2oc(i,j) = flx2oc(i,j) - snowP(i,j)*Lfresh |
705 |
|
|
ENDIF |
706 |
jmc |
1.19 |
|
707 |
|
|
C endif iceMask > 0 |
708 |
mlosch |
1.18 |
ENDIF |
709 |
|
|
C end i/j-loops |
710 |
|
|
ENDDO |
711 |
|
|
ENDDO |
712 |
|
|
C- else: hIce > 0 |
713 |
|
|
DO j = jMin, jMax |
714 |
|
|
DO i = iMin, iMax |
715 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
716 |
jmc |
1.1 |
|
717 |
mlosch |
1.18 |
IF ( hIce(i,j) .GT. 0. _d 0 ) THEN |
718 |
jmc |
1.1 |
C Let it snow |
719 |
mlosch |
1.18 |
hSnow(i,j) = hSnow(i,j) + dt*snowP(i,j)/rhos |
720 |
jmc |
1.1 |
C If ice evap is used to sublimate surface snow/ice or |
721 |
|
|
C if no ice pass on to ocean |
722 |
mlosch |
1.18 |
CML#ifdef ALLOW_AUTODIFF_TAMC |
723 |
|
|
CMLCADJ STORE evapLoc(i,j) = comlev1_thsice_1, key=ikey_1 |
724 |
|
|
CMLCADJ STORE hSnow(i,j) = comlev1_thsice_1, key=ikey_1 |
725 |
|
|
CML#endif |
726 |
|
|
IF (hSnow(i,j).GT.0. _d 0) THEN |
727 |
|
|
IF (evapLoc(i,j)/rhos *dt.GT.hSnow(i,j)) THEN |
728 |
|
|
evapLoc(i,j)=evapLoc(i,j)-hSnow(i,j)*rhos/dt |
729 |
|
|
hSnow(i,j)=0. _d 0 |
730 |
|
|
ELSE |
731 |
|
|
hSnow(i,j) = hSnow(i,j) - evapLoc(i,j)/rhos *dt |
732 |
|
|
evapLoc(i,j)=0. _d 0 |
733 |
|
|
ENDIF |
734 |
|
|
ENDIF |
735 |
|
|
C endif hice > 0 |
736 |
jmc |
1.5 |
ENDIF |
737 |
jmc |
1.19 |
C endif iceMask > 0 |
738 |
mlosch |
1.18 |
ENDIF |
739 |
|
|
C end i/j-loops |
740 |
|
|
ENDDO |
741 |
|
|
ENDDO |
742 |
heimbach |
1.20 |
|
743 |
|
|
#ifdef ALLOW_AUTODIFF_TAMC |
744 |
|
|
CADJ STORE evaploc(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
745 |
|
|
CADJ STORE hnew(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
746 |
|
|
#endif |
747 |
|
|
|
748 |
mlosch |
1.18 |
C- else: hIce > 0 |
749 |
|
|
DO k = 1, nlyr |
750 |
|
|
DO j = jMin, jMax |
751 |
|
|
DO i = iMin, iMax |
752 |
|
|
IF (iceMask(i,j).GT.0. _d 0 ) THEN |
753 |
|
|
|
754 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
755 |
|
|
CMLCADJ STORE evapLoc(i,j) = comlev1_thsice_1, key=ikey_1 |
756 |
|
|
CMLCADJ STORE hIce(i,j) = comlev1_thsice_1, key=ikey_1 |
757 |
|
|
CMLCADJ STORE hnew(i,j,:) = comlev1_thsice_1, key=ikey_1 |
758 |
|
|
CMLCADJ STORE qicen(i,j,:) = comlev1_thsice_1, key=ikey_1 |
759 |
|
|
CML#endif |
760 |
|
|
IF (hIce(i,j).GT.0. _d 0.AND.evapLoc(i,j).GT.0. _d 0) THEN |
761 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
762 |
|
|
CML ikey_2 = k |
763 |
|
|
CML & + nlyr*(i-1) |
764 |
|
|
CML & + nlyr*sNx*(j-1) |
765 |
|
|
CML & + nlyr*sNx*sNy*act1 |
766 |
|
|
CML & + nlyr*sNx*sNy*max1*act2 |
767 |
|
|
CML & + nlyr*sNx*sNy*max1*max2*act3 |
768 |
|
|
CML & + nlyr*sNx*sNy*max1*max2*max3*act4 |
769 |
|
|
CML#endif |
770 |
|
|
CMLC-- |
771 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
772 |
|
|
CMLCADJ STORE evapLoc(i,j) = comlev1_thsice_2, key=ikey_2 |
773 |
|
|
CMLCADJ STORE hnew(i,j,k) = comlev1_thsice_2, key=ikey_2 |
774 |
|
|
CMLCADJ STORE qicen(i,j,k) = comlev1_thsice_2, key=ikey_2 |
775 |
|
|
CML#endif |
776 |
|
|
C IF (evapLoc(i,j) .GT. 0. _d 0) THEN |
777 |
jmc |
1.1 |
C-- original scheme, does not care about ice temp. |
778 |
|
|
C- this can produce small error (< 1.W/m2) in the Energy budget |
779 |
mlosch |
1.18 |
c IF (evapLoc(i,j)/rhoi *dt.GT.hnew(i,j,k)) THEN |
780 |
|
|
c evapLoc(i,j)=evapLoc(i,j)-hnew(i,j,k)*rhoi/dt |
781 |
|
|
c hnew(i,j,k)=0. _d 0 |
782 |
jmc |
1.5 |
c ELSE |
783 |
mlosch |
1.18 |
c hnew(i,j,k) = hnew(i,j,k) - evapLoc(i,j)/rhoi *dt |
784 |
|
|
c evapLoc(i,j)=0. _d 0 |
785 |
jmc |
1.5 |
c ENDIF |
786 |
jmc |
1.1 |
C-- modified scheme. taking into account Ice enthalpy |
787 |
mlosch |
1.18 |
dhi = evapLoc(i,j)/rhoi*dt |
788 |
|
|
IF (dhi.GE.hnew(i,j,k)) THEN |
789 |
|
|
evapLoc(i,j)=evapLoc(i,j)-hnew(i,j,k)*rhoi/dt |
790 |
jmc |
1.19 |
esurp(i,j) = esurp(i,j) |
791 |
mlosch |
1.18 |
& - hnew(i,j,k)*rhoi*(qicen(i,j,k)-Lfresh) |
792 |
|
|
hnew(i,j,k)=0. _d 0 |
793 |
|
|
ELSE |
794 |
|
|
CML#ifdef ALLOW_AUTODIFF_TAMC |
795 |
|
|
CMLCADJ STORE hnew(i,j,k) = comlev1_thsice_2, key=ikey_2 |
796 |
|
|
CML#endif |
797 |
|
|
hq = hnew(i,j,k)*qicen(i,j,k)-dhi*Lfresh |
798 |
|
|
hnew(i,j,k) = hnew(i,j,1) - dhi |
799 |
|
|
qicen(i,j,k)=hq/hnew(i,j,k) |
800 |
|
|
evapLoc(i,j)=0. _d 0 |
801 |
|
|
ENDIF |
802 |
jmc |
1.1 |
C------- |
803 |
mlosch |
1.18 |
c IF (evapLoc(i,j) .GT. 0. _d 0) THEN |
804 |
jmc |
1.5 |
c WRITE (6,*) 'BB All ice sublimates', i,j |
805 |
mlosch |
1.18 |
c hIce(i,j)=0. _d 0 |
806 |
jmc |
1.1 |
c go to 200 |
807 |
jmc |
1.5 |
c ENDIF |
808 |
mlosch |
1.18 |
C endif hice > 0 and evaploc > 0 |
809 |
|
|
ENDIF |
810 |
jmc |
1.19 |
C endif iceMask > 0 |
811 |
mlosch |
1.18 |
ENDIF |
812 |
|
|
C end i/j-loops |
813 |
|
|
ENDDO |
814 |
|
|
ENDDO |
815 |
|
|
C end k-loop |
816 |
|
|
ENDDO |
817 |
heimbach |
1.20 |
|
818 |
|
|
#ifdef ALLOW_AUTODIFF_TAMC |
819 |
|
|
CADJ STORE etop(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
820 |
|
|
CADJ STORE icemask(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
821 |
|
|
CADJ STORE hice(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
822 |
|
|
CADJ STORE hnew(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
823 |
|
|
CADJ STORE qicen(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
824 |
|
|
#endif |
825 |
|
|
|
826 |
jmc |
1.19 |
C still else: hice > 0 |
827 |
mlosch |
1.18 |
DO j = jMin, jMax |
828 |
|
|
DO i = iMin, iMax |
829 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
830 |
|
|
IF (hIce(i,j) .GT. 0. _d 0) THEN |
831 |
jmc |
1.1 |
C Compute new total ice thickness. |
832 |
jmc |
1.19 |
hIce(i,j) = hnew(i,j,1) + hnew(i,j,2) |
833 |
mlosch |
1.18 |
C If hIce < hIceMin, melt the ice. |
834 |
|
|
IF ( hIce(i,j).GT.0. _d 0 .AND. hIce(i,j).LT.hIceMin ) THEN |
835 |
jmc |
1.19 |
frw2oc(i,j) = frw2oc(i,j) |
836 |
mlosch |
1.18 |
& + (rhos*hSnow(i,j) + rhoi*hIce(i,j))/dt |
837 |
|
|
esurp(i,j) = esurp(i,j) - rhos*qsnow*hSnow(i,j) |
838 |
|
|
& - rhoi*qicen(i,j,1)*hnew(i,j,1) |
839 |
|
|
& - rhoi*qicen(i,j,2)*hnew(i,j,2) |
840 |
|
|
hIce(i,j) = 0. _d 0 |
841 |
|
|
hSnow(i,j) = 0. _d 0 |
842 |
|
|
tSrf(i,j) = 0. _d 0 |
843 |
|
|
icFrac(i,j) = 0. _d 0 |
844 |
|
|
qicen(i,j,1) = 0. _d 0 |
845 |
|
|
qicen(i,j,2) = 0. _d 0 |
846 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
847 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
848 |
jmc |
1.19 |
& 'ThSI_CALC_TH: -2 : esurp,frw2oc=', |
849 |
mlosch |
1.18 |
& esurp(i,j), frw2oc(i,j) |
850 |
jmc |
1.6 |
#endif |
851 |
mlosch |
1.18 |
ENDIF |
852 |
jmc |
1.5 |
|
853 |
mlosch |
1.18 |
C-- else hIce > 0: end |
854 |
|
|
ENDIF |
855 |
|
|
|
856 |
jmc |
1.19 |
C endif iceMask > 0 |
857 |
mlosch |
1.18 |
ENDIF |
858 |
|
|
C end i/j-loops |
859 |
|
|
ENDDO |
860 |
|
|
ENDDO |
861 |
heimbach |
1.20 |
|
862 |
|
|
#ifdef ALLOW_AUTODIFF_TAMC |
863 |
|
|
CADJ STORE icemask(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
864 |
|
|
CADJ STORE hice(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
865 |
|
|
CADJ STORE hnew(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
866 |
|
|
CADJ STORE hsnow(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
867 |
|
|
CADJ STORE qicen(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
868 |
|
|
#endif |
869 |
|
|
|
870 |
mlosch |
1.18 |
DO j = jMin, jMax |
871 |
|
|
DO i = iMin, iMax |
872 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
873 |
jmc |
1.5 |
|
874 |
mlosch |
1.18 |
IF ( hIce(i,j) .GT. 0. _d 0 ) THEN |
875 |
jmc |
1.1 |
|
876 |
jmc |
1.6 |
C If there is enough snow to lower the ice/snow interface below |
877 |
|
|
C freeboard, convert enough snow to ice to bring the interface back |
878 |
dfer |
1.15 |
C to sea-level OR if snow height is larger than hsMax, snow is |
879 |
mlosch |
1.18 |
C converted to ice to bring hSnow down to hsMax. Largest change is |
880 |
dfer |
1.15 |
C applied and enthalpy of top ice layer adjusted accordingly. |
881 |
jmc |
1.1 |
|
882 |
heimbach |
1.23 |
#ifdef ALLOW_AUTODIFF_TAMC |
883 |
|
|
ikey_1 = i |
884 |
|
|
& + sNx*(j-1) |
885 |
|
|
& + sNx*sNy*act1 |
886 |
|
|
& + sNx*sNy*max1*act2 |
887 |
|
|
& + sNx*sNy*max1*max2*act3 |
888 |
|
|
& + sNx*sNy*max1*max2*max3*act4 |
889 |
|
|
#endif /* ALLOW_AUTODIFF_TAMC */ |
890 |
|
|
|
891 |
|
|
#ifdef ALLOW_AUTODIFF_TAMC |
892 |
|
|
CADJ STORE hIce(i,j) = comlev1_thsice_1, key=ikey_1 |
893 |
|
|
CADJ STORE hSnow(i,j) = comlev1_thsice_1, key=ikey_1 |
894 |
|
|
CADJ STORE hnew(i,j,:) = comlev1_thsice_1, key=ikey_1 |
895 |
|
|
CADJ STORE qicen(i,j,:) = comlev1_thsice_1, key=ikey_1 |
896 |
|
|
#endif |
897 |
jmc |
1.19 |
IF ( hSnow(i,j) .GT. hIce(i,j)*floodFac |
898 |
mlosch |
1.18 |
& .OR. hSnow(i,j) .GT. hsMax ) THEN |
899 |
jmc |
1.5 |
cBB WRITE (6,*) 'Freeboard adjusts' |
900 |
mlosch |
1.18 |
c dhi = (hSnow(i,j) * rhos - hIce(i,j) * rhoiw) / rhosw |
901 |
|
|
c dhs = dhi * rhoi / rhos |
902 |
heimbach |
1.23 |
#ifdef ALLOW_AUTODIFF_TAMC |
903 |
|
|
CADJ STORE hnew(i,j,:) = comlev1_thsice_1, key=ikey_1 |
904 |
|
|
#endif |
905 |
mlosch |
1.18 |
dhs = (hSnow(i,j) - hIce(i,j)*floodFac) * rhoi / rhosw |
906 |
|
|
dhs = MAX( hSnow(i,j) - hsMax, dhs ) |
907 |
|
|
dhi = dhs * rhos / rhoi |
908 |
|
|
rqh = rhoi*qicen(i,j,1)*hnew(i,j,1) + rhos*qsnow*dhs |
909 |
|
|
hnew(i,j,1) = hnew(i,j,1) + dhi |
910 |
|
|
qicen(i,j,1) = rqh / (rhoi*hnew(i,j,1)) |
911 |
|
|
hIce(i,j) = hIce(i,j) + dhi |
912 |
|
|
hSnow(i,j) = hSnow(i,j) - dhs |
913 |
|
|
ENDIF |
914 |
jmc |
1.1 |
|
915 |
|
|
|
916 |
|
|
C limit ice height |
917 |
|
|
C- NOTE: this part does not conserve Energy ; |
918 |
|
|
C but surplus of fresh water and salt are taken into account. |
919 |
mlosch |
1.18 |
IF (hIce(i,j).GT.hiMax) THEN |
920 |
|
|
cBB print*,'BBerr, hIce>hiMax',i,j,hIce(i,j) |
921 |
|
|
chi=hIce(i,j)-hiMax |
922 |
|
|
hnew(i,j,1)=hnew(i,j,1)-chi/2. _d 0 |
923 |
|
|
hnew(i,j,2)=hnew(i,j,2)-chi/2. _d 0 |
924 |
|
|
frw2oc(i,j) = frw2oc(i,j) + chi*rhoi/dt |
925 |
|
|
ENDIF |
926 |
|
|
c IF (hSnow(i,j).GT.hsMax) THEN |
927 |
|
|
cc print*,'BBerr, hSnow>hsMax',i,j,hSnow(i,j) |
928 |
|
|
c chs=hSnow(i,j)-hsMax |
929 |
|
|
c hSnow(i,j)=hsMax |
930 |
|
|
c frw2oc(i,j) = frw2oc(i,j) + chs*rhos/dt |
931 |
dfer |
1.15 |
c ENDIF |
932 |
jmc |
1.1 |
|
933 |
|
|
C Compute new total ice thickness. |
934 |
mlosch |
1.18 |
hIce(i,j) = hnew(i,j,1) + hnew(i,j,2) |
935 |
jmc |
1.1 |
|
936 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
937 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
938 |
jmc |
1.19 |
& 'ThSI_CALC_TH: b-Winton: hnew, qice =', |
939 |
|
|
& hnew(i,j,1), hnew(i,j,2), |
940 |
|
|
& qicen(i,j,1), qicen(i,j,2) |
941 |
jmc |
1.6 |
#endif |
942 |
|
|
|
943 |
mlosch |
1.18 |
hlyr = hIce(i,j) * rec_nlyr |
944 |
|
|
CML CALL THSICE_RESHAPE_LAYERS( |
945 |
|
|
CML U qicen(i,j,:), |
946 |
|
|
CML I hlyr, hnew(i,j,:), myThid ) |
947 |
|
|
C inlined version of S/R THSICE_RESHAPE_LAYERS |
948 |
|
|
C | Repartition into equal-thickness layers, conserving energy. |
949 |
|
|
C *==========================================================* |
950 |
jmc |
1.19 |
C | This is the 2-layer version (formerly "NEW_LAYERS_WINTON") |
951 |
mlosch |
1.18 |
C | from M. Winton 1999, JAOT, sea-ice model. |
952 |
|
|
if (hnew(i,j,1).gt.hnew(i,j,2)) then |
953 |
|
|
C-- Layer 1 gives ice to layer 2 |
954 |
|
|
f1 = (hnew(i,j,1)-hlyr)/hlyr |
955 |
|
|
q2tmp = f1*qicen(i,j,1) + (1. _d 0-f1)*qicen(i,j,2) |
956 |
|
|
if (q2tmp.gt.Lfresh) then |
957 |
|
|
qicen(i,j,2) = q2tmp |
958 |
|
|
else |
959 |
|
|
C- Keep q2 fixed to avoid q2<Lfresh and T2>0 |
960 |
|
|
qh2 = hlyr*qicen(i,j,2) |
961 |
|
|
qhtot = hnew(i,j,1)*qicen(i,j,1) + hnew(i,j,2)*qicen(i,j,2) |
962 |
|
|
qh1 = qhtot - qh2 |
963 |
|
|
qicen(i,j,1) = qh1/hlyr |
964 |
|
|
endif |
965 |
|
|
else |
966 |
|
|
C- Layer 2 gives ice to layer 1 |
967 |
|
|
f1 = hnew(i,j,1)/hlyr |
968 |
|
|
qicen(i,j,1) = f1*qicen(i,j,1) + (1. _d 0-f1)*qicen(i,j,2) |
969 |
|
|
endif |
970 |
|
|
C end of inlined S/R THSICE_RESHAPE_LAYERS |
971 |
jmc |
1.1 |
|
972 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
973 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
974 |
jmc |
1.19 |
& 'ThSI_CALC_TH: icFrac,hIce, qtot, hSnow =', |
975 |
|
|
& icFrac(i,j),hIce(i,j), (qicen(i,j,1)+qicen(i,j,2))*0.5, |
976 |
mlosch |
1.18 |
& hSnow(i,j) |
977 |
jmc |
1.6 |
#endif |
978 |
jmc |
1.1 |
|
979 |
mlosch |
1.18 |
C- if hIce > 0 : end |
980 |
|
|
ENDIF |
981 |
|
|
200 CONTINUE |
982 |
jmc |
1.1 |
|
983 |
jmc |
1.19 |
C endif iceMask > 0 |
984 |
mlosch |
1.18 |
ENDIF |
985 |
|
|
C end i/j-loops |
986 |
|
|
ENDDO |
987 |
|
|
ENDDO |
988 |
heimbach |
1.20 |
|
989 |
mlosch |
1.18 |
DO j = jMin, jMax |
990 |
|
|
DO i = iMin, iMax |
991 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
992 |
jmc |
1.1 |
C- Compute surplus energy left over from melting. |
993 |
|
|
|
994 |
mlosch |
1.18 |
IF (hIce(i,j).LE.0. _d 0) icFrac(i,j)=0. _d 0 |
995 |
jmc |
1.1 |
|
996 |
|
|
C.. heat fluxes left over for ocean |
997 |
jmc |
1.19 |
flx2oc(i,j) = flx2oc(i,j) |
998 |
mlosch |
1.18 |
& + (Fbot(i,j)+(esurp(i,j)+etop(i,j)+ebot(i,j))/dt) |
999 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
1000 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
1001 |
|
|
& 'ThSI_CALC_TH: [esurp,etop+ebot]/dt =', |
1002 |
|
|
& esurp(i,j)/dt,etop(i,j)/dt,ebot(i,j)/dt |
1003 |
jmc |
1.6 |
#endif |
1004 |
jmc |
1.1 |
|
1005 |
mlosch |
1.18 |
C-- Evaporation left to the ocean : |
1006 |
|
|
frw2oc(i,j) = frw2oc(i,j) - evapLoc(i,j) |
1007 |
|
|
C-- Correct Atmos. fluxes for this different latent heat: |
1008 |
|
|
C evap was computed over freezing surf.(tSrf<0), latent heat = Lvap+Lfresh |
1009 |
|
|
C but should be Lvap only for the fraction "evap" that is left to the ocean. |
1010 |
|
|
flx2oc(i,j) = flx2oc(i,j) + evapLoc(i,j)*Lfresh |
1011 |
jmc |
1.1 |
|
1012 |
|
|
C fresh and salt fluxes |
1013 |
jmc |
1.19 |
c frw2oc(i,j) = (mwater0(i,j) - (rhos*(hSnow(i,j)) |
1014 |
mlosch |
1.18 |
c & + rhoi*(hIce(i,j))))/dt-evapLoc(i,j) |
1015 |
|
|
c fsalt = (msalt0(i,j) - rhoi*hIce(i,j)*saltIce)/35. _d 0/dt ! for same units as frw2oc |
1016 |
|
|
C note (jmc): frw2oc is computed from a sea-ice mass budget that already |
1017 |
|
|
C contains, at this point, snow & evaporation (of snow & ice) |
1018 |
|
|
C but are not meant to be part of ice/ocean fresh-water flux. |
1019 |
|
|
C fix: a) like below or b) by making the budget before snow/evap is added |
1020 |
|
|
c frw2oc(i,j) = (mwater0(i,j) - (rhos*(hSnow(i,j)) + rhoi*(hIce(i,j))))/dt |
1021 |
jmc |
1.6 |
c & + snow(i,j,bi,bj)*rhos - frwAtm |
1022 |
mlosch |
1.18 |
fsalt(i,j) = (msalt0(i,j) - rhoi*hIce(i,j)*saltIce)/dt |
1023 |
jmc |
1.1 |
|
1024 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
1025 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) THEN |
1026 |
|
|
WRITE(6,1020)'ThSI_CALC_TH:dH2O,Ev[kg],frw2oc,fsalt', |
1027 |
|
|
& (mwater0(i,j)-(rhos*hSnow(i,j)+rhoi*hIce(i,j)))/dt, |
1028 |
|
|
& evapLoc(i,j),frw2oc(i,j),fsalt(i,j) |
1029 |
|
|
WRITE(6,1020)'ThSI_CALC_TH: flx2oc,Fbot,extend/dt =', |
1030 |
|
|
& flx2oc(I,J),Fbot(i,j),(etope(i,j)+ebote(i,j))/dt |
1031 |
|
|
ENDIF |
1032 |
jmc |
1.6 |
#endif |
1033 |
jmc |
1.1 |
|
1034 |
mlosch |
1.18 |
C-- add remaining liquid Precip (rain+RunOff) directly to ocean: |
1035 |
|
|
frw2oc(i,j) = frw2oc(i,j) + (prcAtm(i,j)-snowP(i,j)) |
1036 |
jmc |
1.6 |
|
1037 |
jmc |
1.19 |
C endif iceMask > 0 |
1038 |
mlosch |
1.18 |
ENDIF |
1039 |
|
|
C end i/j-loops |
1040 |
|
|
ENDDO |
1041 |
|
|
ENDDO |
1042 |
heimbach |
1.20 |
|
1043 |
|
|
#ifdef ALLOW_AUTODIFF_TAMC |
1044 |
|
|
CADJ STORE icemask(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
1045 |
|
|
CADJ STORE icfrac(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
1046 |
|
|
CADJ STORE hnew(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
1047 |
|
|
CADJ STORE hsnow(:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
1048 |
|
|
CADJ STORE qicen(:,:,:) = comlev1_bibj, key=iicekey, byte=isbyte |
1049 |
|
|
#endif |
1050 |
|
|
|
1051 |
mlosch |
1.18 |
DO j = jMin, jMax |
1052 |
|
|
DO i = iMin, iMax |
1053 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
1054 |
|
|
C-- note: at this point, icFrac has not been changed (unless reset to zero) |
1055 |
|
|
C and it can only be reduced by lateral melting in the following part: |
1056 |
jmc |
1.1 |
|
1057 |
mlosch |
1.18 |
C calculate extent changes |
1058 |
|
|
extend=etope(i,j)+ebote(i,j) |
1059 |
|
|
IF (icFrac(i,j).GT.0. _d 0.AND.extend.GT.0. _d 0) THEN |
1060 |
|
|
rq = rhoi * 0.5 _d 0*(qicen(i,j,1)+qicen(i,j,2)) |
1061 |
|
|
rs = rhos * qsnow |
1062 |
|
|
rqh = rq * hIce(i,j) + rs * hSnow(i,j) |
1063 |
|
|
freshe=(rhos*hSnow(i,j)+rhoi*hIce(i,j))/dt |
1064 |
|
|
salte=(rhoi*hIce(i,j)*saltIce)/dt |
1065 |
|
|
IF ( extend.LT.rqh ) THEN |
1066 |
|
|
icFrac(i,j)=(1. _d 0-extend/rqh)*icFrac(i,j) |
1067 |
|
|
ENDIF |
1068 |
|
|
IF ( extend.LT.rqh .AND. icFrac(i,j).GE.iceMaskMin ) THEN |
1069 |
|
|
frw2oc(i,j)=frw2oc(i,j)+extend/rqh*freshe |
1070 |
jmc |
1.6 |
fsalt(i,j)=fsalt(i,j)+extend/rqh*salte |
1071 |
mlosch |
1.18 |
ELSE |
1072 |
|
|
icFrac(i,j)=0. _d 0 |
1073 |
|
|
hIce(i,j) =0. _d 0 |
1074 |
|
|
hSnow(i,j) =0. _d 0 |
1075 |
|
|
flx2oc(i,j)=flx2oc(i,j)+(extend-rqh)/dt |
1076 |
|
|
frw2oc(i,j)=frw2oc(i,j)+freshe |
1077 |
jmc |
1.6 |
fsalt(i,j)=fsalt(i,j)+salte |
1078 |
mlosch |
1.18 |
ENDIF |
1079 |
|
|
ELSEIF (extend.GT.0. _d 0) THEN |
1080 |
|
|
flx2oc(i,j)=flx2oc(i,j)+extend/dt |
1081 |
jmc |
1.5 |
ENDIF |
1082 |
jmc |
1.19 |
C endif iceMask > 0 |
1083 |
mlosch |
1.18 |
ENDIF |
1084 |
|
|
C end i/j-loops |
1085 |
|
|
ENDDO |
1086 |
|
|
ENDDO |
1087 |
|
|
DO j = jMin, jMax |
1088 |
|
|
DO i = iMin, iMax |
1089 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
1090 |
jmc |
1.6 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
1091 |
mlosch |
1.18 |
C-- Update output variables : |
1092 |
jmc |
1.6 |
|
1093 |
mlosch |
1.18 |
C-- Diagnostic of Atmos. fresh water flux (E-P) over sea-ice : |
1094 |
jmc |
1.6 |
C substract precip from Evap (<- stored in frwAtm array) |
1095 |
mlosch |
1.18 |
frwAtm(i,j) = frwAtm(i,j) - prcAtm(i,j) |
1096 |
jmc |
1.6 |
|
1097 |
mlosch |
1.18 |
C-- update Mixed-Layer Freezing potential heat flux by substracting the |
1098 |
|
|
C part which has already been accounted for (Fbot): |
1099 |
|
|
fzMlOc(i,j) = fzMlOc(i,j) - Fbot(i,j)*iceMask(i,j) |
1100 |
jmc |
1.6 |
|
1101 |
mlosch |
1.18 |
C-- Update Sea-Ice state output: |
1102 |
|
|
qIc1(i,j) = qicen(i,j,1) |
1103 |
|
|
qIc2(i,j) = qicen(i,j,2) |
1104 |
jmc |
1.6 |
#ifdef ALLOW_DBUG_THSICE |
1105 |
mlosch |
1.18 |
IF (dBug(i,j,bi,bj) ) WRITE(6,1020) |
1106 |
|
|
& 'ThSI_CALC_TH: icFrac,flx2oc,fsalt,frw2oc=', |
1107 |
|
|
& icFrac(i,j), flx2oc(i,j), fsalt(i,j), frw2oc(i,j) |
1108 |
jmc |
1.6 |
#endif |
1109 |
mlosch |
1.18 |
C endif iceMask > 0 |
1110 |
|
|
ENDIF |
1111 |
|
|
ENDDO |
1112 |
|
|
ENDDO |
1113 |
jmc |
1.19 |
|
1114 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
1115 |
jmc |
1.6 |
#ifdef CHECK_ENERGY_CONSERV |
1116 |
mlosch |
1.18 |
DO j = jMin, jMax |
1117 |
|
|
DO i = iMin, iMax |
1118 |
|
|
IF (iceMask(i,j).GT.0. _d 0) THEN |
1119 |
|
|
qaux(1)=qIc1(i,j) |
1120 |
|
|
qaux(2)=qIc2(i,j) |
1121 |
|
|
CALL THSICE_CHECK_CONSERV( dBugFlag, i, j, bi, bj, 0, |
1122 |
jmc |
1.19 |
I iceMask(i,j), icFrac(i,j), hIce(i,j), hSnow(i,j), |
1123 |
mlosch |
1.18 |
I qaux, |
1124 |
|
|
I flx2oc(i,j), frw2oc(i,j), fsalt, |
1125 |
|
|
I myTime, myIter, myThid ) |
1126 |
jmc |
1.19 |
C endif iceMask > 0 |
1127 |
jmc |
1.6 |
ENDIF |
1128 |
mlosch |
1.18 |
C end i/j-loops |
1129 |
jmc |
1.6 |
ENDDO |
1130 |
|
|
ENDDO |
1131 |
mlosch |
1.18 |
#endif /* CHECK_ENERGY_CONSERV */ |
1132 |
|
|
|
1133 |
jmc |
1.1 |
#endif /* ALLOW_THSICE */ |
1134 |
|
|
|
1135 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
1136 |
|
|
|
1137 |
|
|
RETURN |
1138 |
|
|
END |