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C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_growth.F,v 1.109 2010/12/16 08:32:04 mlosch 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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CBOP |
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C !ROUTINE: SEAICE_GROWTH |
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C !INTERFACE: |
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SUBROUTINE SEAICE_GROWTH( myTime, myIter, myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE seaice_growth |
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C | o Updata ice thickness and snow depth |
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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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#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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#ifdef ALLOW_EXF |
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# include "EXF_OPTIONS.h" |
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# include "EXF_FIELDS.h" |
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# include "EXF_PARAM.h" |
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#endif |
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#ifdef ALLOW_SALT_PLUME |
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# include "SALT_PLUME.h" |
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#endif |
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#ifdef ALLOW_AUTODIFF_TAMC |
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# include "tamc.h" |
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#endif |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C === Routine arguments === |
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C 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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|
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C !FUNCTIONS: |
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#ifdef ALLOW_DIAGNOSTICS |
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LOGICAL DIAGNOSTICS_IS_ON |
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EXTERNAL DIAGNOSTICS_IS_ON |
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#endif |
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|
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C !LOCAL VARIABLES: |
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C === Local variables === |
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C |
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C unit/sign convention: |
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C Within the thermodynamic computation all stocks, except HSNOW, |
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C are in 'effective ice meters' units, and >0 implies more ice. |
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C This holds for stocks due to ocean and atmosphere heat, |
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C at the outset of 'PART 2: determine heat fluxes/stocks' |
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C and until 'PART 7: determine ocean model forcing' |
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C This strategy minimizes the need for multiplications/divisions |
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C by ice fraction, heat capacity, etc. The only conversions that |
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C occurs are for the HSNOW (in effective snow meters) and |
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C PRECIP (fresh water m/s). |
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C |
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C HEFF is effective Hice thickness (m3/m2) |
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C HSNOW is Heffective snow thickness (m3/m2) |
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C HSALT is Heffective salt content (g/m2) |
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C AREA is the seaice cover fraction (0<=AREA<=1) |
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C Q denotes heat stocks -- converted to ice stocks (m3/m2) early on |
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C |
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C For all other stocks/increments, such as d_HEFFbyATMonOCN |
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C or a_QbyATM_cover, the naming convention is as follows: |
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C The prefix 'a_' means available, the prefix 'd_' means delta |
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C (i.e. increment), and the prefix 'r_' means residual. |
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C The suffix '_cover' denotes a value for the ice covered fraction |
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C of the grid cell, whereas '_open' is for the open water fraction. |
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C The main part of the name states what ice/snow stock is concerned |
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C (e.g. QbyATM or HEFF), and how it is affected (e.g. d_HEFFbyATMonOCN |
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C is the increment of HEFF due to the ATMosphere extracting heat from the |
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C OCeaN surface, or providing heat to the OCeaN surface). |
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|
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CEOP |
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C i,j,bi,bj :: Loop counters |
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INTEGER i, j, bi, bj |
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C number of surface interface layer |
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INTEGER kSurface |
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C constants |
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_RL TBC, ICE2SNOW |
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_RL QI, QS |
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|
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C a_QbyATM_cover :: available heat (in W/m^2) due to the interaction of |
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C the atmosphere and the ocean surface - for ice covered water |
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C a_QbyATM_open :: same but for open water |
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C r_QbyATM_cover :: residual of a_QbyATM_cover after freezing/melting processes |
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C r_QbyATM_open :: same but for open water |
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_RL a_QbyATM_cover (1:sNx,1:sNy) |
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_RL a_QbyATM_open (1:sNx,1:sNy) |
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_RL r_QbyATM_cover (1:sNx,1:sNy) |
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_RL r_QbyATM_open (1:sNx,1:sNy) |
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C a_QSWbyATM_open - short wave heat flux over ocean in W/m^2 |
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C a_QSWbyATM_cover - short wave heat flux under ice in W/m^2 |
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_RL a_QSWbyATM_open (1:sNx,1:sNy) |
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_RL a_QSWbyATM_cover (1:sNx,1:sNy) |
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C a_QbyOCN :: available heat (in in W/m^2) due to the |
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C interaction of the ice pack and the ocean surface |
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C r_QbyOCN :: residual of a_QbyOCN after freezing/melting |
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C processes have been accounted for |
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_RL a_QbyOCN (1:sNx,1:sNy) |
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_RL r_QbyOCN (1:sNx,1:sNy) |
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|
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C conversion factors to go from Q (W/m2) to HEFF (ice meters) |
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_RL convertQ2HI, convertHI2Q |
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C conversion factors to go from precip (m/s) unit to HEFF (ice meters) |
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_RL convertPRECIP2HI, convertHI2PRECIP |
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|
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C ICE/SNOW stocks tendencies associated with the various melt/freeze processes |
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_RL d_AREAbyATM (1:sNx,1:sNy) |
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|
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_RL d_HEFFbyNEG (1:sNx,1:sNy) |
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_RL d_HEFFbyOCNonICE (1:sNx,1:sNy) |
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_RL d_HEFFbyATMonOCN (1:sNx,1:sNy) |
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_RL d_HEFFbyFLOODING (1:sNx,1:sNy) |
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|
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_RL d_HEFFbyATMonOCN_open(1:sNx,1:sNy) |
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|
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_RL d_HSNWbyNEG (1:sNx,1:sNy) |
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_RL d_HSNWbyATMonSNW (1:sNx,1:sNy) |
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_RL d_HSNWbyOCNonSNW (1:sNx,1:sNy) |
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_RL d_HSNWbyRAIN (1:sNx,1:sNy) |
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|
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_RL d_HFRWbyRAIN (1:sNx,1:sNy) |
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C |
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C a_FWbySublim :: fresh water flux implied by latent heat of |
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C sublimation to atmosphere, same sign convention |
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C as EVAP (positive upward) |
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_RL a_FWbySublim (1:sNx,1:sNy) |
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#ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET |
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_RL d_HEFFbySublim (1:sNx,1:sNy) |
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_RL d_HSNWbySublim (1:sNx,1:sNy) |
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_RL rodt, rrodt |
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#endif /* SEAICE_ADD_SUBLIMATION_TO_FWBUDGET */ |
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|
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C actual ice thickness with upper and lower limit |
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_RL heffActual (1:sNx,1:sNy) |
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C actual snow thickness |
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_RL hsnowActual (1:sNx,1:sNy) |
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|
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C AREA_PRE :: hold sea-ice fraction field before any seaice-thermo update |
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_RL AREApreTH (1:sNx,1:sNy) |
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_RL HEFFpreTH (1:sNx,1:sNy) |
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_RL HSNWpreTH (1:sNx,1:sNy) |
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|
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C wind speed |
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_RL UG (1:sNx,1:sNy) |
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#ifdef ALLOW_ATM_WIND |
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_RL SPEED_SQ |
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#endif |
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|
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C pathological cases thresholds |
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_RL heffTooThin, heffTooHeavy |
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|
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C temporary variables available for the various computations |
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#ifdef SEAICE_GROWTH_LEGACY |
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_RL tmpscal0 |
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#endif |
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_RL tmpscal1, tmpscal2, tmpscal3, tmpscal4 |
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_RL tmparr1 (1:sNx,1:sNy) |
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|
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#ifdef ALLOW_SEAICE_FLOODING |
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_RL hDraft |
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#endif /* ALLOW_SEAICE_FLOODING */ |
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|
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#ifdef SEAICE_SALINITY |
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_RL saltFluxAdjust (1:sNx,1:sNy) |
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#endif |
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|
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INTEGER nDim |
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#ifdef SEAICE_MULTICATEGORY |
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INTEGER ilockey |
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PARAMETER ( nDim = MULTDIM ) |
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INTEGER it |
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_RL pFac |
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_RL heffActualP (1:sNx,1:sNy) |
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_RL a_QbyATMmult_cover (1:sNx,1:sNy) |
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_RL a_QSWbyATMmult_cover(1:sNx,1:sNy) |
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_RL a_FWbySublimMult (1:sNx,1:sNy) |
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#else |
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PARAMETER ( nDim = 1 ) |
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#endif /* SEAICE_MULTICATEGORY */ |
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|
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#ifdef MCPHEE_OCEAN_ICE_HEAT_FLUX |
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C Mixed Layer factor (dimensionless) |
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_RL mlTurbFac |
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c Stanton number (dimensionless) |
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_RL STANTON_NUMBER |
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c Friction velocity (m/s) |
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_RL USTAR_BASE |
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#endif |
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|
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#ifdef ALLOW_DIAGNOSTICS |
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_RL DIAGarray (1:sNx,1:sNy) |
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#endif |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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C =================================================================== |
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C =================PART 0: constants and initializations============= |
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C =================================================================== |
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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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C Cutoff for very thin ice |
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heffTooThin=1. _d -5 |
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C Cutoff for iceload |
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heffTooHeavy=dRf(kSurface) / 5. _d 0 |
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|
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C FREEZING TEMP. OF SEA WATER (deg C) |
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TBC = SEAICE_freeze |
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|
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C RATIO OF SEA ICE DENSITY to SNOW DENSITY |
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ICE2SNOW = SEAICE_rhoIce/SEAICE_rhoSnow |
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|
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C HEAT OF FUSION OF ICE (J/m^3) |
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QI = SEAICE_rhoIce*SEAICE_lhFusion |
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C HEAT OF FUSION OF SNOW (J/m^3) |
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QS = SEAICE_rhoSnow*SEAICE_lhFusion |
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C |
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C note that QI/QS=ICE2SNOW -- except it wasnt in old code |
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|
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C conversion factors to go from Q (W/m2) to HEFF (ice meters) |
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convertQ2HI=SEAICE_deltaTtherm/QI |
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convertHI2Q=1/convertQ2HI |
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C conversion factors to go from precip (m/s) unit to HEFF (ice meters) |
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convertPRECIP2HI=SEAICE_deltaTtherm*rhoConstFresh/SEAICE_rhoIce |
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convertHI2PRECIP=1./convertPRECIP2HI |
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|
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#ifdef MCPHEE_OCEAN_ICE_HEAT_FLUX |
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STANTON_NUMBER = 0.0056 _d 0 |
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USTAR_BASE = 0.0125 _d 0 |
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#endif |
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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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|
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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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|
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|
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C array initializations |
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C ===================== |
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|
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DO J=1,sNy |
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DO I=1,sNx |
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a_QbyATM_cover (I,J) = 0.0 _d 0 |
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a_QbyATM_open(I,J) = 0.0 _d 0 |
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r_QbyATM_cover (I,J) = 0.0 _d 0 |
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r_QbyATM_open (I,J) = 0.0 _d 0 |
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|
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a_QSWbyATM_open (I,J) = 0.0 _d 0 |
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a_QSWbyATM_cover (I,J) = 0.0 _d 0 |
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|
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a_QbyOCN (I,J) = 0.0 _d 0 |
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r_QbyOCN (I,J) = 0.0 _d 0 |
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|
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d_AREAbyATM(I,J) = 0.0 _d 0 |
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|
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d_HEFFbyOCNonICE(I,J) = 0.0 _d 0 |
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d_HEFFbyATMonOCN(I,J) = 0.0 _d 0 |
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d_HEFFbyFLOODING(I,J) = 0.0 _d 0 |
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|
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d_HEFFbyATMonOCN_open(I,J) = 0.0 _d 0 |
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|
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d_HSNWbyATMonSNW(I,J) = 0.0 _d 0 |
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d_HSNWbyOCNonSNW(I,J) = 0.0 _d 0 |
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d_HSNWbyRAIN(I,J) = 0.0 _d 0 |
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a_FWbySublim(I,J) = 0.0 _d 0 |
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#ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET |
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d_HEFFbySublim(I,J) = 0.0 _d 0 |
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d_HSNWbySublim(I,J) = 0.0 _d 0 |
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#endif /* SEAICE_ADD_SUBLIMATION_TO_FWBUDGET */ |
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c |
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d_HFRWbyRAIN(I,J) = 0.0 _d 0 |
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|
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tmparr1(I,J) = 0.0 _d 0 |
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|
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#ifdef SEAICE_SALINITY |
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saltFluxAdjust(I,J) = 0.0 _d 0 |
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#endif |
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#ifdef SEAICE_MULTICATEGORY |
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a_QbyATMmult_cover(I,J) = 0.0 _d 0 |
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a_QSWbyATMmult_cover(I,J) = 0.0 _d 0 |
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a_FWbySublimMult(I,J) = 0.0 _d 0 |
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#endif /* SEAICE_MULTICATEGORY */ |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_MEAN_SFLUX_COST_CONTRIBUTION |
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DO J=1-oLy,sNy+oLy |
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DO I=1-oLx,sNx+oLx |
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frWtrAtm(I,J,bi,bj) = 0.0 _d 0 |
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ENDDO |
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ENDDO |
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#endif |
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|
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|
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C ===================================================================== |
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C ===========PART 1: treat pathological cases (post advdiff)=========== |
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C ===================================================================== |
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|
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#ifdef SEAICE_GROWTH_LEGACY |
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|
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DO J=1,sNy |
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DO I=1,sNx |
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HEFFpreTH(I,J)=HEFFNM1(I,J,bi,bj) |
| 331 |
HSNWpreTH(I,J)=HSNOW(I,J,bi,bj) |
| 332 |
AREApreTH(I,J)=AREANM1(I,J,bi,bj) |
| 333 |
d_HEFFbyNEG(I,J)=0. _d 0 |
| 334 |
d_HSNWbyNEG(I,J)=0. _d 0 |
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ENDDO |
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ENDDO |
| 337 |
|
| 338 |
#else /* SEAICE_GROWTH_LEGACY */ |
| 339 |
|
| 340 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 341 |
#ifdef SEAICE_MODIFY_GROWTH_ADJ |
| 342 |
Cgf no dependency through pathological cases treatment |
| 343 |
if ( SEAICEadjMODE.EQ.0 ) then |
| 344 |
#endif |
| 345 |
#endif |
| 346 |
|
| 347 |
C 1) treat the case of negative values: |
| 348 |
|
| 349 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 350 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 351 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 352 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 353 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 354 |
DO J=1,sNy |
| 355 |
DO I=1,sNx |
| 356 |
d_HEFFbyNEG(I,J)=MAX(-HEFF(I,J,bi,bj),0. _d 0) |
| 357 |
HEFF(I,J,bi,bj)=HEFF(I,J,bi,bj)+d_HEFFbyNEG(I,J) |
| 358 |
d_HSNWbyNEG(I,J)=MAX(-HSNOW(I,J,bi,bj),0. _d 0) |
| 359 |
HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)+d_HSNWbyNEG(I,J) |
| 360 |
AREA(I,J,bi,bj)=MAX(AREA(I,J,bi,bj),0. _d 0) |
| 361 |
ENDDO |
| 362 |
ENDDO |
| 363 |
|
| 364 |
C 1.25) treat the case of very thin ice: |
| 365 |
|
| 366 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 367 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 368 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 369 |
DO J=1,sNy |
| 370 |
DO I=1,sNx |
| 371 |
if (HEFF(I,J,bi,bj).LE.heffTooThin) then |
| 372 |
tmpscal2=-HEFF(I,J,bi,bj) |
| 373 |
tmpscal3=-HSNOW(I,J,bi,bj) |
| 374 |
TICE(I,J,bi,bj)=celsius2K |
| 375 |
else |
| 376 |
tmpscal2=0. _d 0 |
| 377 |
tmpscal3=0. _d 0 |
| 378 |
endif |
| 379 |
HEFF(I,J,bi,bj)=HEFF(I,J,bi,bj)+tmpscal2 |
| 380 |
d_HEFFbyNEG(I,J)=d_HEFFbyNEG(I,J)+tmpscal2 |
| 381 |
HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)+tmpscal3 |
| 382 |
d_HSNWbyNEG(I,J)=d_HSNWbyNEG(I,J)+tmpscal3 |
| 383 |
ENDDO |
| 384 |
ENDDO |
| 385 |
|
| 386 |
C 1.5) treat the case of area but no ice/snow: |
| 387 |
|
| 388 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 389 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 390 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 391 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 392 |
DO J=1,sNy |
| 393 |
DO I=1,sNx |
| 394 |
IF ((HEFF(i,j,bi,bj).EQ.0. _d 0).AND. |
| 395 |
& (HSNOW(i,j,bi,bj).EQ.0. _d 0)) AREA(I,J,bi,bj)=0. _d 0 |
| 396 |
ENDDO |
| 397 |
ENDDO |
| 398 |
|
| 399 |
C 2) treat the case of very small area: |
| 400 |
|
| 401 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 402 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 403 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 404 |
DO J=1,sNy |
| 405 |
DO I=1,sNx |
| 406 |
IF ((HEFF(i,j,bi,bj).GT.0).OR.(HSNOW(i,j,bi,bj).GT.0)) |
| 407 |
& AREA(I,J,bi,bj)=MAX(AREA(I,J,bi,bj),areaMin) |
| 408 |
ENDDO |
| 409 |
ENDDO |
| 410 |
|
| 411 |
C 2.5) treat case of excessive ice cover: |
| 412 |
|
| 413 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 414 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 415 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 416 |
DO J=1,sNy |
| 417 |
DO I=1,sNx |
| 418 |
AREA(I,J,bi,bj)=MIN(AREA(I,J,bi,bj),areaMax) |
| 419 |
ENDDO |
| 420 |
ENDDO |
| 421 |
|
| 422 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 423 |
#ifdef SEAICE_MODIFY_GROWTH_ADJ |
| 424 |
endif |
| 425 |
#endif |
| 426 |
#endif |
| 427 |
|
| 428 |
C 3) store regularized values of heff, hsnow, area at the onset of thermo. |
| 429 |
DO J=1,sNy |
| 430 |
DO I=1,sNx |
| 431 |
HEFFpreTH(I,J)=HEFF(I,J,bi,bj) |
| 432 |
HSNWpreTH(I,J)=HSNOW(I,J,bi,bj) |
| 433 |
AREApreTH(I,J)=AREA(I,J,bi,bj) |
| 434 |
ENDDO |
| 435 |
ENDDO |
| 436 |
|
| 437 |
C 4) treat sea ice salinity pathological cases |
| 438 |
#ifdef SEAICE_SALINITY |
| 439 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 440 |
CADJ STORE hsalt(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 441 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 442 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 443 |
DO J=1,sNy |
| 444 |
DO I=1,sNx |
| 445 |
IF ( (HSALT(I,J,bi,bj) .LT. 0.0).OR. |
| 446 |
& (HEFF(I,J,bi,bj) .EQ. 0.0) ) THEN |
| 447 |
saltFluxAdjust(I,J) = - HEFFM(I,J,bi,bj) * |
| 448 |
& HSALT(I,J,bi,bj) / SEAICE_deltaTtherm |
| 449 |
HSALT(I,J,bi,bj) = 0.0 _d 0 |
| 450 |
ENDIF |
| 451 |
ENDDO |
| 452 |
ENDDO |
| 453 |
#endif /* SEAICE_SALINITY */ |
| 454 |
|
| 455 |
C 5) treat sea ice age pathological cases |
| 456 |
C ... |
| 457 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 458 |
|
| 459 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 460 |
#ifdef SEAICE_MODIFY_GROWTH_ADJ |
| 461 |
Cgf no additional dependency of air-sea fluxes to ice |
| 462 |
if ( SEAICEadjMODE.GE.1 ) then |
| 463 |
DO J=1,sNy |
| 464 |
DO I=1,sNx |
| 465 |
HEFFpreTH(I,J) = 0. _d 0 |
| 466 |
HSNWpreTH(I,J) = 0. _d 0 |
| 467 |
AREApreTH(I,J) = 0. _d 0 |
| 468 |
ENDDO |
| 469 |
ENDDO |
| 470 |
endif |
| 471 |
#endif |
| 472 |
#endif |
| 473 |
|
| 474 |
C 4) COMPUTE ACTUAL ICE/SNOW THICKNESS; USE MIN/MAX VALUES |
| 475 |
C TO REGULARIZE SEAICE_SOLVE4TEMP/d_AREA COMPUTATIONS |
| 476 |
|
| 477 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 478 |
CADJ STORE AREApreTH = comlev1_bibj, key = iicekey, byte = isbyte |
| 479 |
CADJ STORE HEFFpreTH = comlev1_bibj, key = iicekey, byte = isbyte |
| 480 |
CADJ STORE HSNWpreTH = comlev1_bibj, key = iicekey, byte = isbyte |
| 481 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 482 |
DO J=1,sNy |
| 483 |
DO I=1,sNx |
| 484 |
tmpscal1 = MAX(areaMin,AREApreTH(I,J)) |
| 485 |
hsnowActual(I,J) = HSNWpreTH(I,J)/tmpscal1 |
| 486 |
tmpscal2 = HEFFpreTH(I,J)/tmpscal1 |
| 487 |
heffActual(I,J) = MAX(tmpscal2,hiceMin) |
| 488 |
Cgf do we need to keep this comment? |
| 489 |
C Capping the actual ice thickness effectively enforces a |
| 490 |
C minimum of heat flux through the ice and helps getting rid of |
| 491 |
C very thick ice. |
| 492 |
Cdm actually, this does exactly the opposite, i.e., ice is thicker |
| 493 |
Cdm when heffActual is capped, so I am commenting out |
| 494 |
Cdm heffActual(I,J) = MIN(heffActual(I,J),9.0 _d +00) |
| 495 |
ENDDO |
| 496 |
ENDDO |
| 497 |
|
| 498 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 499 |
#ifdef SEAICE_SIMPLIFY_GROWTH_ADJ |
| 500 |
CALL ZERO_ADJ_1D( sNx*sNy, heffActual, myThid) |
| 501 |
CALL ZERO_ADJ_1D( sNx*sNy, hsnowActual, myThid) |
| 502 |
#endif |
| 503 |
#endif |
| 504 |
|
| 505 |
|
| 506 |
C =================================================================== |
| 507 |
C ================PART 2: determine heat fluxes/stocks=============== |
| 508 |
C =================================================================== |
| 509 |
|
| 510 |
C determine available heat due to the atmosphere -- for open water |
| 511 |
C ================================================================ |
| 512 |
|
| 513 |
C ocean surface/mixed layer temperature |
| 514 |
DO J=1,sNy |
| 515 |
DO I=1,sNx |
| 516 |
TMIX(I,J,bi,bj)=theta(I,J,kSurface,bi,bj)+celsius2K |
| 517 |
ENDDO |
| 518 |
ENDDO |
| 519 |
|
| 520 |
C wind speed from exf |
| 521 |
DO J=1,sNy |
| 522 |
DO I=1,sNx |
| 523 |
UG(I,J) = MAX(SEAICE_EPS,wspeed(I,J,bi,bj)) |
| 524 |
ENDDO |
| 525 |
ENDDO |
| 526 |
|
| 527 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 528 |
CADJ STORE qnet(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 529 |
CADJ STORE qsw(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 530 |
cCADJ STORE UG = comlev1_bibj, key = iicekey,byte=isbyte |
| 531 |
cCADJ STORE TMIX(:,:,bi,bj) = comlev1_bibj, key = iicekey,byte=isbyte |
| 532 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 533 |
|
| 534 |
CALL SEAICE_BUDGET_OCEAN( |
| 535 |
I UG, |
| 536 |
U TMIX, |
| 537 |
O a_QbyATM_open, a_QSWbyATM_open, |
| 538 |
I bi, bj, myTime, myIter, myThid ) |
| 539 |
|
| 540 |
C determine available heat due to the atmosphere -- for ice covered water |
| 541 |
C ======================================================================= |
| 542 |
|
| 543 |
#ifdef ALLOW_ATM_WIND |
| 544 |
IF (useRelativeWind) THEN |
| 545 |
C Compute relative wind speed over sea ice. |
| 546 |
DO J=1,sNy |
| 547 |
DO I=1,sNx |
| 548 |
SPEED_SQ = |
| 549 |
& (uWind(I,J,bi,bj) |
| 550 |
& +0.5 _d 0*(uVel(i,j,kSurface,bi,bj) |
| 551 |
& +uVel(i+1,j,kSurface,bi,bj)) |
| 552 |
& -0.5 _d 0*(uice(i,j,bi,bj)+uice(i+1,j,bi,bj)))**2 |
| 553 |
& +(vWind(I,J,bi,bj) |
| 554 |
& +0.5 _d 0*(vVel(i,j,kSurface,bi,bj) |
| 555 |
& +vVel(i,j+1,kSurface,bi,bj)) |
| 556 |
& -0.5 _d 0*(vice(i,j,bi,bj)+vice(i,j+1,bi,bj)))**2 |
| 557 |
IF ( SPEED_SQ .LE. SEAICE_EPS_SQ ) THEN |
| 558 |
UG(I,J)=SEAICE_EPS |
| 559 |
ELSE |
| 560 |
UG(I,J)=SQRT(SPEED_SQ) |
| 561 |
ENDIF |
| 562 |
ENDDO |
| 563 |
ENDDO |
| 564 |
ENDIF |
| 565 |
#endif |
| 566 |
|
| 567 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 568 |
CADJ STORE tice = comlev1, key = ikey_dynamics, byte = isbyte |
| 569 |
CADJ STORE hsnowActual = comlev1_bibj, key = iicekey, byte = isbyte |
| 570 |
CADJ STORE heffActual = comlev1_bibj, key = iicekey, byte = isbyte |
| 571 |
CADJ STORE UG = comlev1_bibj, key = iicekey, byte = isbyte |
| 572 |
# ifdef SEAICE_MULTICATEGORY |
| 573 |
CADJ STORE tices = comlev1, key = ikey_dynamics, byte = isbyte |
| 574 |
# endif /* SEAICE_MULTICATEGORY */ |
| 575 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 576 |
|
| 577 |
C-- Start loop over multi-categories, if SEAICE_MULTICATEGORY is undefined |
| 578 |
C nDim = 1, and there is only one loop iteration |
| 579 |
#ifdef SEAICE_MULTICATEGORY |
| 580 |
DO IT=1,nDim |
| 581 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 582 |
C Why do we need this store directive when we have just stored |
| 583 |
C TICES before the loop? |
| 584 |
ilockey = (iicekey-1)*nDim + IT |
| 585 |
CADJ STORE tices(:,:,it,bi,bj) = comlev1_multdim, |
| 586 |
CADJ & key = ilockey, byte = isbyte |
| 587 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 588 |
pFac = (2.0 _d 0*real(IT)-1.0 _d 0)/nDim |
| 589 |
DO J=1,sNy |
| 590 |
DO I=1,sNx |
| 591 |
heffActualP(I,J)= heffActual(I,J)*pFac |
| 592 |
TICE(I,J,bi,bj)=TICES(I,J,IT,bi,bj) |
| 593 |
ENDDO |
| 594 |
ENDDO |
| 595 |
CALL SEAICE_SOLVE4TEMP( |
| 596 |
I UG, heffActualP, hsnowActual, |
| 597 |
U TICE, |
| 598 |
O a_QbyATMmult_cover, a_QSWbyATMmult_cover, |
| 599 |
O a_FWbySublimMult, |
| 600 |
I bi, bj, myTime, myIter, myThid ) |
| 601 |
DO J=1,sNy |
| 602 |
DO I=1,sNx |
| 603 |
C average over categories |
| 604 |
a_QbyATM_cover (I,J) = a_QbyATM_cover(I,J) |
| 605 |
& + a_QbyATMmult_cover(I,J)/nDim |
| 606 |
a_QSWbyATM_cover (I,J) = a_QSWbyATM_cover(I,J) |
| 607 |
& + a_QSWbyATMmult_cover(I,J)/nDim |
| 608 |
a_FWbySublim (I,J) = a_FWbySublim(I,J) |
| 609 |
& + a_FWbySublimMult(I,J)/nDim |
| 610 |
TICES(I,J,IT,bi,bj) = TICE(I,J,bi,bj) |
| 611 |
ENDDO |
| 612 |
ENDDO |
| 613 |
ENDDO |
| 614 |
#else |
| 615 |
CALL SEAICE_SOLVE4TEMP( |
| 616 |
I UG, heffActual, hsnowActual, |
| 617 |
U TICE, |
| 618 |
O a_QbyATM_cover, a_QSWbyATM_cover, a_FWbySublim, |
| 619 |
I bi, bj, myTime, myIter, myThid ) |
| 620 |
#endif /* SEAICE_MULTICATEGORY */ |
| 621 |
C-- End loop over multi-categories |
| 622 |
|
| 623 |
#ifdef ALLOW_DIAGNOSTICS |
| 624 |
IF ( useDiagnostics ) THEN |
| 625 |
IF ( DIAGNOSTICS_IS_ON('SIatmQnt',myThid) ) THEN |
| 626 |
DO J=1,sNy |
| 627 |
DO I=1,sNx |
| 628 |
CML If I consider the atmosphere above the ice, the surface flux |
| 629 |
CML which is relevant for the air temperature dT/dt Eq |
| 630 |
CML accounts for sensible and radiation (with different treatment |
| 631 |
CML according to wave-length) fluxes but not for "latent heat flux", |
| 632 |
CML since it does not contribute to heating the air. |
| 633 |
CML So this diagnostic is only good for heat budget calculations within |
| 634 |
CML the ice-ocean system. |
| 635 |
DIAGarray(I,J) = maskC(I,J,kSurface,bi,bj) * ( |
| 636 |
& a_QbyATM_cover(I,J) * AREApreTH(I,J) |
| 637 |
& + a_QbyATM_open(I,J) * ( ONE - AREApreTH(I,J) ) ) |
| 638 |
ENDDO |
| 639 |
ENDDO |
| 640 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIatmQnt',0,1,3,bi,bj,myThid) |
| 641 |
ENDIF |
| 642 |
IF ( DIAGNOSTICS_IS_ON('SIfwSubl',myThid) ) THEN |
| 643 |
DO J=1,sNy |
| 644 |
DO I=1,sNx |
| 645 |
DIAGarray(I,J) = maskC(I,J,kSurface,bi,bj) * |
| 646 |
& a_FWbySublim(I,J) * AREApreTH(I,J) |
| 647 |
ENDDO |
| 648 |
ENDDO |
| 649 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIfwSubl',0,1,3,bi,bj,myThid) |
| 650 |
ENDIF |
| 651 |
IF ( DIAGNOSTICS_IS_ON('SIatmFW ',myThid) ) THEN |
| 652 |
DO J=1,sNy |
| 653 |
DO I=1,sNx |
| 654 |
DIAGarray(I,J) = maskC(I,J,kSurface,bi,bj)*( |
| 655 |
& PRECIP(I,J,bi,bj) |
| 656 |
& - EVAP(I,J,bi,bj) |
| 657 |
& *( ONE - AREApreTH(I,J) ) |
| 658 |
#ifdef ALLOW_RUNOFF |
| 659 |
& + RUNOFF(I,J,bi,bj) |
| 660 |
#endif /* ALLOW_RUNOFF */ |
| 661 |
& )*rhoConstFresh |
| 662 |
#ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET |
| 663 |
& - a_FWbySublim(I,J)*AREApreTH(I,J) |
| 664 |
#endif /* SEAICE_ADD_SUBLIMATION_TO_FWBUDGET */ |
| 665 |
ENDDO |
| 666 |
ENDDO |
| 667 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIatmFW ',0,1,3,bi,bj,myThid) |
| 668 |
ENDIF |
| 669 |
ENDIF |
| 670 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 671 |
|
| 672 |
C switch heat fluxes from W/m2 to 'effective' ice meters |
| 673 |
DO J=1,sNy |
| 674 |
DO I=1,sNx |
| 675 |
a_QbyATM_cover(I,J) = a_QbyATM_cover(I,J) |
| 676 |
& * convertQ2HI * AREApreTH(I,J) |
| 677 |
a_QSWbyATM_cover(I,J) = a_QSWbyATM_cover(I,J) |
| 678 |
& * convertQ2HI * AREApreTH(I,J) |
| 679 |
a_QbyATM_open(I,J) = a_QbyATM_open(I,J) |
| 680 |
& * convertQ2HI * ( ONE - AREApreTH(I,J) ) |
| 681 |
a_QSWbyATM_open(I,J) = a_QSWbyATM_open(I,J) |
| 682 |
& * convertQ2HI * ( ONE - AREApreTH(I,J) ) |
| 683 |
C and initialize r_QbyATM_cover/r_QbyATM_open |
| 684 |
r_QbyATM_cover(I,J)=a_QbyATM_cover(I,J) |
| 685 |
r_QbyATM_open(I,J)=a_QbyATM_open(I,J) |
| 686 |
#ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET |
| 687 |
C Convert fresh water flux by sublimation to 'effective' ice meters. |
| 688 |
C Negative sublimation is resublimation and will be added as snow. |
| 689 |
a_FWbySublim(I,J) = SEAICE_deltaTtherm/SEAICE_rhoIce |
| 690 |
& * a_FWbySublim(I,J)*AREApreTH(I,J) |
| 691 |
#endif /* SEAICE_ADD_SUBLIMATION_TO_FWBUDGET */ |
| 692 |
ENDDO |
| 693 |
ENDDO |
| 694 |
|
| 695 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 696 |
#ifdef SEAICE_MODIFY_GROWTH_ADJ |
| 697 |
Cgf no additional dependency through ice cover |
| 698 |
if ( SEAICEadjMODE.GE.3 ) then |
| 699 |
DO J=1,sNy |
| 700 |
DO I=1,sNx |
| 701 |
a_QbyATM_cover(I,J) = 0. _d 0 |
| 702 |
r_QbyATM_cover(I,J) = 0. _d 0 |
| 703 |
a_QSWbyATM_cover(I,J) = 0. _d 0 |
| 704 |
ENDDO |
| 705 |
ENDDO |
| 706 |
endif |
| 707 |
#endif |
| 708 |
#endif |
| 709 |
|
| 710 |
C determine available heat due to the ice pack tying the |
| 711 |
C underlying surface water temperature to freezing point |
| 712 |
C ====================================================== |
| 713 |
|
| 714 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 715 |
CADJ STORE theta(:,:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 716 |
#endif |
| 717 |
|
| 718 |
DO J=1,sNy |
| 719 |
DO I=1,sNx |
| 720 |
#ifdef SEAICE_VARIABLE_FREEZING_POINT |
| 721 |
TBC = -0.0575 _d 0*salt(I,J,kSurface,bi,bj) + 0.0901 _d 0 |
| 722 |
#endif /* SEAICE_VARIABLE_FREEZING_POINT */ |
| 723 |
|
| 724 |
#ifdef MCPHEE_OCEAN_ICE_HEAT_FLUX |
| 725 |
# ifdef MCPHEE_STEP_FUNCTION |
| 726 |
mlTurbFac = 12.5 _d 0 |
| 727 |
IF (AREApreTH(I,J) .GT. 0. _d 0) mlTurbFac = 1. _d 0 |
| 728 |
# else |
| 729 |
mlTurbFac = 12.5 _d 0 - 11.5 _d 0 *AREApreTH(I,J) |
| 730 |
# endif /* GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR */ |
| 731 |
IF ( theta(I,J,kSurface,bi,bj) .GE. TBC ) THEN |
| 732 |
tmpscal1 = STANTON_NUMBER * USTAR_BASE * mlTurbFac |
| 733 |
ELSE |
| 734 |
tmpscal1 = 0. _d 0 |
| 735 |
ENDIF |
| 736 |
tmpscal1 = tmpscal1 |
| 737 |
& * SEAICE_deltaTtherm * hFacC(i,j,kSurface,bi,bj) |
| 738 |
#else /* MCPHEE_OCEAN_ICE_HEAT_FLUX */ |
| 739 |
IF ( theta(I,J,kSurface,bi,bj) .GE. TBC ) THEN |
| 740 |
tmpscal1 = SEAICE_availHeatFrac |
| 741 |
ELSE |
| 742 |
tmpscal1 = SEAICE_availHeatFracFrz |
| 743 |
ENDIF |
| 744 |
tmpscal1 = tmpscal1 |
| 745 |
& * dRf(kSurface) * hFacC(i,j,kSurface,bi,bj) |
| 746 |
#endif /* MCPHEE_OCEAN_ICE_HEAT_FLUX */ |
| 747 |
|
| 748 |
a_QbyOCN(i,j) = -tmpscal1 * (HeatCapacity_Cp*rhoConst/QI) |
| 749 |
& * (theta(I,J,kSurface,bi,bj)-TBC) |
| 750 |
r_QbyOCN(i,j) = a_QbyOCN(i,j) |
| 751 |
ENDDO |
| 752 |
ENDDO |
| 753 |
|
| 754 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 755 |
#ifdef SEAICE_SIMPLIFY_GROWTH_ADJ |
| 756 |
CALL ZERO_ADJ_1D( sNx*sNy, r_QbyOCN, myThid) |
| 757 |
#endif |
| 758 |
#endif |
| 759 |
|
| 760 |
|
| 761 |
C =================================================================== |
| 762 |
C =========PART 3: determine effective thicknesses increments======== |
| 763 |
C =================================================================== |
| 764 |
|
| 765 |
C compute ice thickness tendency due to ice-ocean interaction |
| 766 |
C =========================================================== |
| 767 |
|
| 768 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 769 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 770 |
CADJ STORE r_QbyOCN = comlev1_bibj,key=iicekey,byte=isbyte |
| 771 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 772 |
|
| 773 |
DO J=1,sNy |
| 774 |
DO I=1,sNx |
| 775 |
d_HEFFbyOCNonICE(I,J)=MAX(r_QbyOCN(i,j), -HEFF(I,J,bi,bj)) |
| 776 |
r_QbyOCN(I,J)=r_QbyOCN(I,J)-d_HEFFbyOCNonICE(I,J) |
| 777 |
HEFF(I,J,bi,bj)=HEFF(I,J,bi,bj) + d_HEFFbyOCNonICE(I,J) |
| 778 |
ENDDO |
| 779 |
ENDDO |
| 780 |
|
| 781 |
#ifdef SEAICE_GROWTH_LEGACY |
| 782 |
#ifdef ALLOW_DIAGNOSTICS |
| 783 |
IF ( useDiagnostics ) THEN |
| 784 |
IF ( DIAGNOSTICS_IS_ON('SIyneg ',myThid) ) THEN |
| 785 |
CALL DIAGNOSTICS_FILL(d_HEFFbyOCNonICE, |
| 786 |
& 'SIyneg ',0,1,1,bi,bj,myThid) |
| 787 |
ENDIF |
| 788 |
ENDIF |
| 789 |
#endif |
| 790 |
#endif |
| 791 |
|
| 792 |
C compute snow melt tendency due to snow-atmosphere interaction |
| 793 |
C ================================================================== |
| 794 |
|
| 795 |
#ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET |
| 796 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 797 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 798 |
CADJ STORE a_FWbySublim = comlev1_bibj,key=iicekey,byte=isbyte |
| 799 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 800 |
C First apply sublimation to snow |
| 801 |
rodt = ICE2SNOW |
| 802 |
rrodt = 1./rodt |
| 803 |
DO J=1,sNy |
| 804 |
DO I=1,sNx |
| 805 |
IF ( a_FWbySublim(I,J) .LT. 0. _d 0 ) THEN |
| 806 |
C resublimate as snow |
| 807 |
d_HSNWbySublim(I,J) = -a_FWbySublim(I,J)*rodt |
| 808 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj) + d_HSNWbySublim(I,J) |
| 809 |
a_FWbySublim(I,J) = 0. _d 0 |
| 810 |
ENDIF |
| 811 |
C sublimate snow first |
| 812 |
tmpscal1 = MIN(a_FWbySublim(I,J)*rodt,HSNOW(I,J,bi,bj)) |
| 813 |
tmpscal2 = MAX(tmpscal1,0. _d 0) |
| 814 |
d_HSNWbySublim(I,J) = - tmpscal2 |
| 815 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj) - tmpscal2 |
| 816 |
a_FWbySublim(I,J) = a_FWbySublim(I,J) - tmpscal2*rrodt |
| 817 |
ENDDO |
| 818 |
ENDDO |
| 819 |
#endif /* SEAICE_ADD_SUBLIMATION_TO_FWBUDGET */ |
| 820 |
|
| 821 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 822 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 823 |
CADJ STORE r_QbyATM_cover = comlev1_bibj,key=iicekey,byte=isbyte |
| 824 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 825 |
|
| 826 |
DO J=1,sNy |
| 827 |
DO I=1,sNx |
| 828 |
tmpscal1=MAX(r_QbyATM_cover(I,J)*ICE2SNOW,-HSNOW(I,J,bi,bj)) |
| 829 |
tmpscal2=MIN(tmpscal1,0. _d 0) |
| 830 |
#ifdef SEAICE_MODIFY_GROWTH_ADJ |
| 831 |
Cgf no additional dependency through snow |
| 832 |
if ( SEAICEadjMODE.GE.2 ) tmpscal2 = 0. _d 0 |
| 833 |
#endif |
| 834 |
d_HSNWbyATMonSNW(I,J)= tmpscal2 |
| 835 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj) + tmpscal2 |
| 836 |
r_QbyATM_cover(I,J)=r_QbyATM_cover(I,J) - tmpscal2/ICE2SNOW |
| 837 |
ENDDO |
| 838 |
ENDDO |
| 839 |
|
| 840 |
C compute ice thickness tendency due to the atmosphere |
| 841 |
C ==================================================== |
| 842 |
|
| 843 |
#ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET |
| 844 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 845 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 846 |
CADJ STORE a_FWbySublim = comlev1_bibj,key=iicekey,byte=isbyte |
| 847 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 848 |
C Apply sublimation to ice |
| 849 |
rodt = 1. _d 0 |
| 850 |
rrodt = 1./rodt |
| 851 |
DO J=1,sNy |
| 852 |
DO I=1,sNx |
| 853 |
C If anything is left, sublimate ice |
| 854 |
tmpscal1 = MIN(a_FWbySublim(I,J)*rodt,HEFF(I,J,bi,bj)) |
| 855 |
tmpscal2 = MAX(tmpscal1,0. _d 0) |
| 856 |
d_HEFFbySublim(I,J) = - tmpscal2 |
| 857 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj) - tmpscal2 |
| 858 |
a_FWbySublim(I,J) = a_FWbySublim(I,J) - tmpscal2*rrodt |
| 859 |
ENDDO |
| 860 |
ENDDO |
| 861 |
#endif /* SEAICE_ADD_SUBLIMATION_TO_FWBUDGET */ |
| 862 |
|
| 863 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 864 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 865 |
CADJ STORE r_QbyATM_cover = comlev1_bibj,key=iicekey,byte=isbyte |
| 866 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 867 |
|
| 868 |
Cgf note: this block is not actually tested by lab_sea |
| 869 |
Cgf where all experiments start in January. So even though |
| 870 |
Cgf the v1.81=>v1.82 revision would change results in |
| 871 |
Cgf warming conditions, the lab_sea results were not changed. |
| 872 |
|
| 873 |
DO J=1,sNy |
| 874 |
DO I=1,sNx |
| 875 |
tmpscal2 = MAX(-HEFF(I,J,bi,bj),r_QbyATM_cover(I,J)) |
| 876 |
d_HEFFbyATMonOCN(I,J)=d_HEFFbyATMonOCN(I,J)+tmpscal2 |
| 877 |
r_QbyATM_cover(I,J)=r_QbyATM_cover(I,J)-tmpscal2 |
| 878 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj) + tmpscal2 |
| 879 |
ENDDO |
| 880 |
ENDDO |
| 881 |
|
| 882 |
C attribute precip to fresh water or snow stock, |
| 883 |
C depending on atmospheric conditions. |
| 884 |
C ================================================= |
| 885 |
#ifdef ALLOW_ATM_TEMP |
| 886 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 887 |
CADJ STORE a_QbyATM_cover = comlev1_bibj,key=iicekey,byte=isbyte |
| 888 |
CADJ STORE PRECIP(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 889 |
CADJ STORE AREApreTH = comlev1_bibj,key=iicekey,byte=isbyte |
| 890 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 891 |
DO J=1,sNy |
| 892 |
DO I=1,sNx |
| 893 |
C possible alternatives to the a_QbyATM_cover criterium |
| 894 |
c IF (TICE(I,J,bi,bj) .LT. TMIX) THEN |
| 895 |
c IF (atemp(I,J,bi,bj) .LT. celsius2K) THEN |
| 896 |
IF ( a_QbyATM_cover(I,J).GE. 0. _d 0 ) THEN |
| 897 |
C add precip as snow |
| 898 |
d_HFRWbyRAIN(I,J)=0. _d 0 |
| 899 |
d_HSNWbyRAIN(I,J)=convertPRECIP2HI*ICE2SNOW* |
| 900 |
& PRECIP(I,J,bi,bj)*AREApreTH(I,J) |
| 901 |
ELSE |
| 902 |
C add precip to the fresh water bucket |
| 903 |
d_HFRWbyRAIN(I,J)=-convertPRECIP2HI* |
| 904 |
& PRECIP(I,J,bi,bj)*AREApreTH(I,J) |
| 905 |
d_HSNWbyRAIN(I,J)=0. _d 0 |
| 906 |
ENDIF |
| 907 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj) + d_HSNWbyRAIN(I,J) |
| 908 |
ENDDO |
| 909 |
ENDDO |
| 910 |
Cgf note: this does not affect air-sea heat flux, |
| 911 |
Cgf since the implied air heat gain to turn |
| 912 |
Cgf rain to snow is not a surface process. |
| 913 |
#ifdef ALLOW_DIAGNOSTICS |
| 914 |
IF ( useDiagnostics ) THEN |
| 915 |
IF ( DIAGNOSTICS_IS_ON('SIsnPrcp',myThid) ) THEN |
| 916 |
DO J=1,sNy |
| 917 |
DO I=1,sNx |
| 918 |
DIAGarray(I,J) = maskC(I,J,kSurface,bi,bj) |
| 919 |
& * d_HSNWbyRAIN(I,J)*SEAICE_rhoSnow/SEAICE_deltaTtherm |
| 920 |
ENDDO |
| 921 |
ENDDO |
| 922 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIsnPrcp',0,1,3,bi,bj,myThid) |
| 923 |
ENDIF |
| 924 |
ENDIF |
| 925 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 926 |
#endif /* ALLOW_ATM_TEMP */ |
| 927 |
|
| 928 |
C compute snow melt due to heat available from ocean. |
| 929 |
C ================================================================= |
| 930 |
|
| 931 |
Cgf do we need to keep this comment and cpp bracket? |
| 932 |
Cph( very sensitive bit here by JZ |
| 933 |
#ifndef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING |
| 934 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 935 |
CADJ STORE HSNOW(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 936 |
CADJ STORE r_QbyOCN = comlev1_bibj,key=iicekey,byte=isbyte |
| 937 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 938 |
DO J=1,sNy |
| 939 |
DO I=1,sNx |
| 940 |
tmpscal1=MAX(r_QbyOCN(i,j)*ICE2SNOW, -HSNOW(I,J,bi,bj)) |
| 941 |
tmpscal2=MIN(tmpscal1,0. _d 0) |
| 942 |
#ifdef SEAICE_MODIFY_GROWTH_ADJ |
| 943 |
Cgf no additional dependency through snow |
| 944 |
if ( SEAICEadjMODE.GE.2 ) tmpscal2 = 0. _d 0 |
| 945 |
#endif |
| 946 |
d_HSNWbyOCNonSNW(I,J) = tmpscal2 |
| 947 |
r_QbyOCN(I,J)=r_QbyOCN(I,J) |
| 948 |
& -d_HSNWbyOCNonSNW(I,J)/ICE2SNOW |
| 949 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj)+d_HSNWbyOCNonSNW(I,J) |
| 950 |
ENDDO |
| 951 |
ENDDO |
| 952 |
#endif /* SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING */ |
| 953 |
Cph) |
| 954 |
|
| 955 |
C gain of new ice over open water |
| 956 |
C =============================== |
| 957 |
#ifndef SEAICE_GROWTH_LEGACY |
| 958 |
#ifdef SEAICE_DO_OPEN_WATER_GROWTH |
| 959 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 960 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 961 |
CADJ STORE r_QbyATM_open = comlev1_bibj,key=iicekey,byte=isbyte |
| 962 |
CADJ STORE r_QbyOCN = comlev1_bibj,key=iicekey,byte=isbyte |
| 963 |
CADJ STORE a_QSWbyATM_cover = comlev1_bibj,key=iicekey,byte=isbyte |
| 964 |
CADJ STORE a_QSWbyATM_open = comlev1_bibj,key=iicekey,byte=isbyte |
| 965 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 966 |
DO J=1,sNy |
| 967 |
DO I=1,sNx |
| 968 |
if ( (r_QbyATM_open(I,J).GT.0. _d 0).AND. |
| 969 |
& (HEFF(I,J,bi,bj).GT.0. _d 0) ) then |
| 970 |
tmpscal1=r_QbyATM_open(I,J)+r_QbyOCN(i,j) |
| 971 |
C at this point r_QbyOCN(i,j)<=0 and represents the heat |
| 972 |
C that is still needed to get to the first layer to freezing point |
| 973 |
tmpscal2=SWFRACB*(a_QSWbyATM_cover(I,J) |
| 974 |
& +a_QSWbyATM_open(I,J)) |
| 975 |
C SWFRACB*tmpscal2<=0 is the heat (out of qnet) that is not |
| 976 |
C going to the first layer, which favors its freezing |
| 977 |
tmpscal3=MAX(0. _d 0, tmpscal1-tmpscal2) |
| 978 |
else |
| 979 |
tmpscal3=0. _d 0 |
| 980 |
endif |
| 981 |
d_HEFFbyATMonOCN_open(I,J)=tmpscal3 |
| 982 |
C The distinct d_HEFFbyATMonOCN_open array is only needed for d_AREA computation. |
| 983 |
C For the rest it is treated as another contribution to d_HEFFbyATMonOCN. |
| 984 |
d_HEFFbyATMonOCN(I,J)=d_HEFFbyATMonOCN(I,J)+tmpscal3 |
| 985 |
r_QbyATM_open(I,J)=r_QbyATM_open(I,J)-tmpscal3 |
| 986 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj) + tmpscal3 |
| 987 |
ENDDO |
| 988 |
ENDDO |
| 989 |
#endif /* SEAICE_DO_OPEN_WATER_GROWTH */ |
| 990 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 991 |
|
| 992 |
C convert snow to ice if submerged. |
| 993 |
C ================================= |
| 994 |
|
| 995 |
#ifndef SEAICE_GROWTH_LEGACY |
| 996 |
C note: in legacy, this process is done at the end |
| 997 |
#ifdef ALLOW_SEAICE_FLOODING |
| 998 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 999 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1000 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1001 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 1002 |
IF ( SEAICEuseFlooding ) THEN |
| 1003 |
DO J=1,sNy |
| 1004 |
DO I=1,sNx |
| 1005 |
hDraft = (HSNOW(I,J,bi,bj)*SEAICE_rhoSnow |
| 1006 |
& +HEFF(I,J,bi,bj)*SEAICE_rhoIce)/rhoConst |
| 1007 |
tmpscal1 = MAX( 0. _d 0, hDraft - HEFF(I,J,bi,bj)) |
| 1008 |
d_HEFFbyFLOODING(I,J)=tmpscal1 |
| 1009 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj)+d_HEFFbyFLOODING(I,J) |
| 1010 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj)- |
| 1011 |
& d_HEFFbyFLOODING(I,J)*ICE2SNOW |
| 1012 |
ENDDO |
| 1013 |
ENDDO |
| 1014 |
ENDIF |
| 1015 |
#endif /* ALLOW_SEAICE_FLOODING */ |
| 1016 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 1017 |
|
| 1018 |
|
| 1019 |
C =================================================================== |
| 1020 |
C ==========PART 4: determine ice cover fraction increments=========- |
| 1021 |
C =================================================================== |
| 1022 |
|
| 1023 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 1024 |
CADJ STORE d_HEFFbyATMonOCN = comlev1_bibj,key=iicekey,byte=isbyte |
| 1025 |
CADJ STORE d_HEFFbyOCNonICE = comlev1_bibj,key=iicekey,byte=isbyte |
| 1026 |
CADJ STORE d_HEFFbyATMonOCN_open=comlev1_bibj,key=iicekey,byte=isbyte |
| 1027 |
CADJ STORE a_QbyATM_open = comlev1_bibj,key=iicekey,byte=isbyte |
| 1028 |
CADJ STORE heffActual = comlev1_bibj,key=iicekey,byte=isbyte |
| 1029 |
CADJ STORE AREApreTH = comlev1_bibj,key=iicekey,byte=isbyte |
| 1030 |
CADJ STORE HEFF(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1031 |
CADJ STORE HSNOW(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1032 |
CADJ STORE AREA(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1033 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 1034 |
|
| 1035 |
DO J=1,sNy |
| 1036 |
DO I=1,sNx |
| 1037 |
C compute ice melt due to ATM (and OCN) heat stocks |
| 1038 |
#ifdef SEAICE_GROWTH_LEGACY |
| 1039 |
|
| 1040 |
C compute heff after ice melt by ocn: |
| 1041 |
tmpscal0=HEFF(I,J,bi,bj) |
| 1042 |
& - d_HEFFbyATMonOCN(I,J) - d_HEFFbyFLOODING(I,J) |
| 1043 |
C compute available heat left after snow melt by atm: |
| 1044 |
tmpscal1= a_QbyATM_open(I,J)+a_QbyATM_cover(I,J) |
| 1045 |
& - d_HSNWbyATMonSNW(I,J)/ICE2SNOW |
| 1046 |
C (cannot melt more than all the ice) |
| 1047 |
tmpscal2 = MAX(-tmpscal0,tmpscal1) |
| 1048 |
tmpscal3 = MIN(ZERO,tmpscal2) |
| 1049 |
#ifdef ALLOW_DIAGNOSTICS |
| 1050 |
DIAGarray(I,J) = tmpscal2 |
| 1051 |
#endif |
| 1052 |
C gain of new ice over open water |
| 1053 |
tmpscal4 = MAX(ZERO,a_QbyATM_open(I,J)) |
| 1054 |
|
| 1055 |
#else /* SEAICE_GROWTH_LEGACY */ |
| 1056 |
|
| 1057 |
# ifdef SEAICE_OCN_MELT_ACT_ON_AREA |
| 1058 |
C ice cover reduction by joint OCN+ATM melt |
| 1059 |
tmpscal3 = MIN( 0. _d 0 , |
| 1060 |
& d_HEFFbyATMonOCN(I,J)+d_HEFFbyOCNonICE(I,J) ) |
| 1061 |
# else |
| 1062 |
C ice cover reduction by ATM melt only -- as in legacy code |
| 1063 |
tmpscal3 = MIN( 0. _d 0 , d_HEFFbyATMonOCN(I,J) ) |
| 1064 |
# endif |
| 1065 |
C gain of new ice over open water |
| 1066 |
|
| 1067 |
# ifdef SEAICE_DO_OPEN_WATER_GROWTH |
| 1068 |
C the one effectively used to increment HEFF |
| 1069 |
tmpscal4 = d_HEFFbyATMonOCN_open(I,J) |
| 1070 |
# else |
| 1071 |
C the virtual one -- as in legcy code |
| 1072 |
tmpscal4 = MAX(ZERO,a_QbyATM_open(I,J)) |
| 1073 |
# endif |
| 1074 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 1075 |
|
| 1076 |
C compute cover fraction tendency |
| 1077 |
IF ( YC(I,J,bi,bj) .LT. ZERO ) THEN |
| 1078 |
d_AREAbyATM(I,J)=tmpscal4/HO_south |
| 1079 |
ELSE |
| 1080 |
d_AREAbyATM(I,J)=tmpscal4/HO |
| 1081 |
ENDIF |
| 1082 |
d_AREAbyATM(I,J)=d_AREAbyATM(I,J) |
| 1083 |
#ifdef SEAICE_GROWTH_LEGACY |
| 1084 |
& +HALF*tmpscal3*AREApreTH(I,J) |
| 1085 |
& /(tmpscal0+.00001 _d 0) |
| 1086 |
#else |
| 1087 |
& +HALF*tmpscal3/heffActual(I,J) |
| 1088 |
#endif |
| 1089 |
C apply tendency |
| 1090 |
IF ( (HEFF(i,j,bi,bj).GT.0. _d 0).OR. |
| 1091 |
& (HSNOW(i,j,bi,bj).GT.0. _d 0) ) THEN |
| 1092 |
AREA(I,J,bi,bj)=max(0. _d 0 , min( 1. _d 0, |
| 1093 |
& AREA(I,J,bi,bj)+d_AREAbyATM(I,J) ) ) |
| 1094 |
ELSE |
| 1095 |
AREA(I,J,bi,bj)=0. _d 0 |
| 1096 |
ENDIF |
| 1097 |
ENDDO |
| 1098 |
ENDDO |
| 1099 |
|
| 1100 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 1101 |
#ifdef SEAICE_MODIFY_GROWTH_ADJ |
| 1102 |
Cgf 'bulk' linearization of area=f(HEFF) |
| 1103 |
if ( SEAICEadjMODE.GE.1 ) then |
| 1104 |
DO J=1,sNy |
| 1105 |
DO I=1,sNx |
| 1106 |
C AREA(I,J,bi,bj) = 0.1 _d 0 * HEFF(I,J,bi,bj) |
| 1107 |
AREA(I,J,bi,bj) = AREApreTH(I,J) + 0.1 _d 0 * |
| 1108 |
& ( HEFF(I,J,bi,bj) - HEFFpreTH(I,J) ) |
| 1109 |
ENDDO |
| 1110 |
ENDDO |
| 1111 |
endif |
| 1112 |
#endif |
| 1113 |
#endif |
| 1114 |
|
| 1115 |
#ifdef SEAICE_GROWTH_LEGACY |
| 1116 |
#ifdef ALLOW_DIAGNOSTICS |
| 1117 |
IF ( useDiagnostics ) THEN |
| 1118 |
IF ( DIAGNOSTICS_IS_ON('SIfice ',myThid) ) THEN |
| 1119 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIfice ',0,1,3,bi,bj,myThid) |
| 1120 |
ENDIF |
| 1121 |
ENDIF |
| 1122 |
#endif |
| 1123 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 1124 |
|
| 1125 |
|
| 1126 |
C =================================================================== |
| 1127 |
C =============PART 5: determine ice salinity increments============= |
| 1128 |
C =================================================================== |
| 1129 |
|
| 1130 |
#ifndef SEAICE_SALINITY |
| 1131 |
# ifdef ALLOW_AUTODIFF_TAMC |
| 1132 |
# ifdef ALLOW_SALT_PLUME |
| 1133 |
CADJ STORE d_HEFFbyNEG = comlev1_bibj,key=iicekey,byte=isbyte |
| 1134 |
CADJ STORE d_HEFFbyOCNonICE = comlev1_bibj,key=iicekey,byte=isbyte |
| 1135 |
CADJ STORE d_HEFFbyATMonOCN = comlev1_bibj,key=iicekey,byte=isbyte |
| 1136 |
CADJ STORE d_HEFFbyFLOODING = comlev1_bibj,key=iicekey,byte=isbyte |
| 1137 |
CADJ STORE salt(:,:,kSurface,bi,bj) = comlev1_bibj, |
| 1138 |
CADJ & key = iicekey, byte = isbyte |
| 1139 |
# endif /* ALLOW_SALT_PLUME */ |
| 1140 |
# endif /* ALLOW_AUTODIFF_TAMC */ |
| 1141 |
DO J=1,sNy |
| 1142 |
DO I=1,sNx |
| 1143 |
Cgf note: flooding does count negatively |
| 1144 |
tmpscal1 = d_HEFFbyNEG(I,J) + d_HEFFbyOCNonICE(I,J) + |
| 1145 |
& d_HEFFbyATMonOCN(I,J) - d_HEFFbyFLOODING(I,J) |
| 1146 |
tmpscal2 = tmpscal1 * SIsal0 * HEFFM(I,J,bi,bj) |
| 1147 |
& /SEAICE_deltaTtherm * ICE2WATR * rhoConstFresh |
| 1148 |
saltFlux(I,J,bi,bj) = tmpscal2 |
| 1149 |
#ifdef ALLOW_SALT_PLUME |
| 1150 |
tmpscal3 = tmpscal1*salt(I,j,kSurface,bi,bj)*HEFFM(I,J,bi,bj) |
| 1151 |
& /SEAICE_deltaTtherm * ICE2WATR * rhoConstFresh |
| 1152 |
saltPlumeFlux(I,J,bi,bj) = MAX( tmpscal3-tmpscal2 , 0. _d 0) |
| 1153 |
#endif /* ALLOW_SALT_PLUME */ |
| 1154 |
ENDDO |
| 1155 |
ENDDO |
| 1156 |
#endif |
| 1157 |
|
| 1158 |
#ifdef ALLOW_ATM_TEMP |
| 1159 |
#ifdef SEAICE_SALINITY |
| 1160 |
|
| 1161 |
#ifdef SEAICE_GROWTH_LEGACY |
| 1162 |
# ifdef ALLOW_AUTODIFF_TAMC |
| 1163 |
CADJ STORE hsalt(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1164 |
# endif /* ALLOW_AUTODIFF_TAMC */ |
| 1165 |
DO J=1,sNy |
| 1166 |
DO I=1,sNx |
| 1167 |
C set HSALT = 0 if HSALT < 0 and compute salt to remove from ocean |
| 1168 |
IF ( HSALT(I,J,bi,bj) .LT. 0.0 ) THEN |
| 1169 |
saltFluxAdjust(I,J) = - HEFFM(I,J,bi,bj) * |
| 1170 |
& HSALT(I,J,bi,bj) / SEAICE_deltaTtherm |
| 1171 |
HSALT(I,J,bi,bj) = 0.0 _d 0 |
| 1172 |
ENDIF |
| 1173 |
ENDDO |
| 1174 |
ENDDO |
| 1175 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 1176 |
|
| 1177 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 1178 |
CADJ STORE hsalt(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1179 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 1180 |
|
| 1181 |
DO J=1,sNy |
| 1182 |
DO I=1,sNx |
| 1183 |
C sum up the terms that affect the salt content of the ice pack |
| 1184 |
tmpscal1=d_HEFFbyOCNonICE(I,J)+d_HEFFbyATMonOCN(I,J) |
| 1185 |
C recompute HEFF before thermodyncamic updates (which is not AREApreTH in legacy code) |
| 1186 |
tmpscal2=HEFF(I,J,bi,bj)-tmpscal1-d_HEFFbyFLOODING(I,J) |
| 1187 |
C tmpscal1 > 0 : m of sea ice that is created |
| 1188 |
IF ( tmpscal1 .GE. 0.0 ) THEN |
| 1189 |
saltFlux(I,J,bi,bj) = |
| 1190 |
& HEFFM(I,J,bi,bj)/SEAICE_deltaTtherm |
| 1191 |
& *SEAICE_salinity*salt(I,j,kSurface,bi,bj) |
| 1192 |
& *tmpscal1*ICE2WATR*rhoConstFresh |
| 1193 |
#ifdef ALLOW_SALT_PLUME |
| 1194 |
C saltPlumeFlux is defined only during freezing: |
| 1195 |
saltPlumeFlux(I,J,bi,bj)= |
| 1196 |
& HEFFM(I,J,bi,bj)/SEAICE_deltaTtherm |
| 1197 |
& *(1-SEAICE_salinity)*salt(I,j,kSurface,bi,bj) |
| 1198 |
& *tmpscal1*ICE2WATR*rhoConstFresh |
| 1199 |
C if SaltPlumeSouthernOcean=.FALSE. turn off salt plume in Southern Ocean |
| 1200 |
IF ( .NOT. SaltPlumeSouthernOcean ) THEN |
| 1201 |
IF ( YC(I,J,bi,bj) .LT. 0.0 _d 0 ) |
| 1202 |
& saltPlumeFlux(i,j,bi,bj) = 0.0 _d 0 |
| 1203 |
ENDIF |
| 1204 |
#endif /* ALLOW_SALT_PLUME */ |
| 1205 |
|
| 1206 |
C tmpscal1 < 0 : m of sea ice that is melted |
| 1207 |
ELSE |
| 1208 |
saltFlux(I,J,bi,bj) = |
| 1209 |
& HEFFM(I,J,bi,bj)/SEAICE_deltaTtherm |
| 1210 |
& *HSALT(I,J,bi,bj) |
| 1211 |
& *tmpscal1/tmpscal2 |
| 1212 |
#ifdef ALLOW_SALT_PLUME |
| 1213 |
saltPlumeFlux(i,j,bi,bj) = 0.0 _d 0 |
| 1214 |
#endif /* ALLOW_SALT_PLUME */ |
| 1215 |
ENDIF |
| 1216 |
C update HSALT based on surface saltFlux |
| 1217 |
HSALT(I,J,bi,bj) = HSALT(I,J,bi,bj) + |
| 1218 |
& saltFlux(I,J,bi,bj) * SEAICE_deltaTtherm |
| 1219 |
saltFlux(I,J,bi,bj) = |
| 1220 |
& saltFlux(I,J,bi,bj) + saltFluxAdjust(I,J) |
| 1221 |
#ifdef SEAICE_GROWTH_LEGACY |
| 1222 |
C set HSALT = 0 if HEFF = 0 and compute salt to dump into ocean |
| 1223 |
IF ( HEFF(I,J,bi,bj) .EQ. 0.0 ) THEN |
| 1224 |
saltFlux(I,J,bi,bj) = saltFlux(I,J,bi,bj) - |
| 1225 |
& HEFFM(I,J,bi,bj) * HSALT(I,J,bi,bj) / |
| 1226 |
& SEAICE_deltaTtherm |
| 1227 |
HSALT(I,J,bi,bj) = 0.0 _d 0 |
| 1228 |
#ifdef ALLOW_SALT_PLUME |
| 1229 |
saltPlumeFlux(i,j,bi,bj) = 0.0 _d 0 |
| 1230 |
#endif /* ALLOW_SALT_PLUME */ |
| 1231 |
ENDIF |
| 1232 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 1233 |
ENDDO |
| 1234 |
ENDDO |
| 1235 |
#endif /* SEAICE_SALINITY */ |
| 1236 |
#endif /* ALLOW_ATM_TEMP */ |
| 1237 |
|
| 1238 |
|
| 1239 |
C ======================================================================= |
| 1240 |
C =====LEGACY PART 5.5: treat pathological cases, then do flooding ====== |
| 1241 |
C ======================================================================= |
| 1242 |
|
| 1243 |
#ifdef SEAICE_GROWTH_LEGACY |
| 1244 |
|
| 1245 |
C treat values of ice cover fraction oustide |
| 1246 |
C the [0 1] range, and other such issues. |
| 1247 |
C =========================================== |
| 1248 |
|
| 1249 |
Cgf note: this part cannot be heat and water conserving |
| 1250 |
|
| 1251 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 1252 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 1253 |
CADJ & key = iicekey, byte = isbyte |
| 1254 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, |
| 1255 |
CADJ & key = iicekey, byte = isbyte |
| 1256 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 1257 |
DO J=1,sNy |
| 1258 |
DO I=1,sNx |
| 1259 |
C NOW SET AREA(I,J,bi,bj)=0 WHERE NO ICE IS |
| 1260 |
AREA(I,J,bi,bj)=MIN(AREA(I,J,bi,bj) |
| 1261 |
& ,HEFF(I,J,bi,bj)/.0001 _d 0) |
| 1262 |
ENDDO |
| 1263 |
ENDDO |
| 1264 |
|
| 1265 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 1266 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 1267 |
CADJ & key = iicekey, byte = isbyte |
| 1268 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 1269 |
DO J=1,sNy |
| 1270 |
DO I=1,sNx |
| 1271 |
C NOW TRUNCATE AREA |
| 1272 |
AREA(I,J,bi,bj)=MIN(ONE,AREA(I,J,bi,bj)) |
| 1273 |
ENDDO |
| 1274 |
ENDDO |
| 1275 |
|
| 1276 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 1277 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 1278 |
CADJ & key = iicekey, byte = isbyte |
| 1279 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, |
| 1280 |
CADJ & key = iicekey, byte = isbyte |
| 1281 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 1282 |
DO J=1,sNy |
| 1283 |
DO I=1,sNx |
| 1284 |
AREA(I,J,bi,bj) = MAX(ZERO,AREA(I,J,bi,bj)) |
| 1285 |
HSNOW(I,J,bi,bj) = MAX(ZERO,HSNOW(I,J,bi,bj)) |
| 1286 |
AREA(I,J,bi,bj) = AREA(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 1287 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 1288 |
#ifdef SEAICE_CAP_HEFF |
| 1289 |
C This is not energy conserving, but at least it conserves fresh water |
| 1290 |
tmpscal0 = -MAX(HEFF(I,J,bi,bj)-MAX_HEFF,0. _d 0) |
| 1291 |
d_HEFFbyNeg(I,J) = d_HEFFbyNeg(I,J) + tmpscal0 |
| 1292 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj) + tmpscal0 |
| 1293 |
#endif /* SEAICE_CAP_HEFF */ |
| 1294 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 1295 |
ENDDO |
| 1296 |
ENDDO |
| 1297 |
|
| 1298 |
#ifdef ALLOW_DIAGNOSTICS |
| 1299 |
IF ( useDiagnostics ) THEN |
| 1300 |
IF ( DIAGNOSTICS_IS_ON('SIthdgrh',myThid) ) THEN |
| 1301 |
DO J=1,sNy |
| 1302 |
DO I=1,sNx |
| 1303 |
tmparr1(I,J) = (HEFF(I,J,bi,bj)-HEFFpreTH(I,J)) |
| 1304 |
& /SEAICE_deltaTtherm |
| 1305 |
ENDDO |
| 1306 |
ENDDO |
| 1307 |
CALL DIAGNOSTICS_FILL(tmparr1,'SIthdgrh',0,1,3,bi,bj,myThid) |
| 1308 |
ENDIF |
| 1309 |
ENDIF |
| 1310 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 1311 |
|
| 1312 |
C convert snow to ice if submerged. |
| 1313 |
C ================================= |
| 1314 |
|
| 1315 |
#ifdef ALLOW_SEAICE_FLOODING |
| 1316 |
IF ( SEAICEuseFlooding ) THEN |
| 1317 |
DO J=1,sNy |
| 1318 |
DO I=1,sNx |
| 1319 |
hDraft = (HSNOW(I,J,bi,bj)*SEAICE_rhoSnow |
| 1320 |
& +HEFF(I,J,bi,bj)*SEAICE_rhoIce)/rhoConst |
| 1321 |
tmpscal1 = MAX( 0. _d 0, hDraft - HEFF(I,J,bi,bj)) |
| 1322 |
d_HEFFbyFLOODING(I,J)=tmpscal1 |
| 1323 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj)+d_HEFFbyFLOODING(I,J) |
| 1324 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj)- |
| 1325 |
& d_HEFFbyFLOODING(I,J)*ICE2SNOW |
| 1326 |
ENDDO |
| 1327 |
ENDDO |
| 1328 |
#ifdef ALLOW_DIAGNOSTICS |
| 1329 |
IF ( useDiagnostics ) THEN |
| 1330 |
IF ( DIAGNOSTICS_IS_ON('SIsnwice',myThid) ) THEN |
| 1331 |
DO J=1,sNy |
| 1332 |
DO I=1,sNx |
| 1333 |
tmparr1(I,J) = d_HEFFbyFLOODING(I,J)/SEAICE_deltaTtherm |
| 1334 |
ENDDO |
| 1335 |
ENDDO |
| 1336 |
CALL DIAGNOSTICS_FILL(tmparr1,'SIsnwice',0,1,3,bi,bj,myThid) |
| 1337 |
ENDIF |
| 1338 |
ENDIF |
| 1339 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 1340 |
ENDIF |
| 1341 |
#endif /* ALLOW_SEAICE_FLOODING */ |
| 1342 |
|
| 1343 |
#endif /* SEAICE_GROWTH_LEGACY */ |
| 1344 |
|
| 1345 |
|
| 1346 |
C =================================================================== |
| 1347 |
C ===============PART 6: determine ice age increments================ |
| 1348 |
C =================================================================== |
| 1349 |
|
| 1350 |
#ifdef SEAICE_AGE |
| 1351 |
# ifndef SEAICE_AGE_VOL |
| 1352 |
C Sources and sinks for sea ice age: |
| 1353 |
C assume that a) freezing: new ice fraction forms with zero age |
| 1354 |
C b) melting: ice fraction vanishes with current age |
| 1355 |
DO J=1,sNy |
| 1356 |
DO I=1,sNx |
| 1357 |
IF ( AREA(I,J,bi,bj) .GT. 0.15 ) THEN |
| 1358 |
IF ( AREA(i,j,bi,bj) .LT. AREApreTH(i,j) ) THEN |
| 1359 |
C-- scale effective ice-age to account for ice-age sink associated with melting |
| 1360 |
IceAge(i,j,bi,bj) = IceAge(i,j,bi,bj) |
| 1361 |
& *AREA(i,j,bi,bj)/AREApreTH(i,j) |
| 1362 |
ENDIF |
| 1363 |
C-- account for aging: |
| 1364 |
IceAge(i,j,bi,bj) = IceAge(i,j,bi,bj) |
| 1365 |
& + AREA(i,j,bi,bj) * SEAICE_deltaTtherm |
| 1366 |
ELSE |
| 1367 |
IceAge(i,j,bi,bj) = ZERO |
| 1368 |
ENDIF |
| 1369 |
ENDDO |
| 1370 |
ENDDO |
| 1371 |
# else /* ifdef SEAICE_AGE_VOL */ |
| 1372 |
C Sources and sinks for sea ice age: |
| 1373 |
C assume that a) freezing: new ice volume forms with zero age |
| 1374 |
C b) melting: ice volume vanishes with current age |
| 1375 |
DO J=1,sNy |
| 1376 |
DO I=1,sNx |
| 1377 |
C-- compute actual age from effective age: |
| 1378 |
IF (AREApreTH(i,j).GT.0. _d 0) THEN |
| 1379 |
tmpscal1=IceAge(i,j,bi,bj)/AREApreTH(i,j) |
| 1380 |
ELSE |
| 1381 |
tmpscal1=0. _d 0 |
| 1382 |
ENDIF |
| 1383 |
IF ( (HEFFpreTH(i,j).LT.HEFF(i,j,bi,bj)).AND. |
| 1384 |
& (AREA(i,j,bi,bj).GT.0.15) ) THEN |
| 1385 |
tmpscal2=tmpscal1*HEFFpreTH(i,j)/ |
| 1386 |
& HEFF(i,j,bi,bj)+SEAICE_deltaTtherm |
| 1387 |
ELSEIF (AREA(i,j,bi,bj).LE.0.15) THEN |
| 1388 |
tmpscal2=0. _d 0 |
| 1389 |
ELSE |
| 1390 |
tmpscal2=tmpscal1+SEAICE_deltaTtherm |
| 1391 |
ENDIF |
| 1392 |
C-- re-scale to effective age: |
| 1393 |
IceAge(i,j,bi,bj) = tmpscal2*AREA(i,j,bi,bj) |
| 1394 |
ENDDO |
| 1395 |
ENDDO |
| 1396 |
# endif /* SEAICE_AGE_VOL */ |
| 1397 |
#endif /* SEAICE_AGE */ |
| 1398 |
|
| 1399 |
|
| 1400 |
C =================================================================== |
| 1401 |
C ==============PART 7: determine ocean model forcing================ |
| 1402 |
C =================================================================== |
| 1403 |
|
| 1404 |
C compute net heat flux leaving/entering the ocean, |
| 1405 |
C accounting for the part used in melt/freeze processes |
| 1406 |
C ===================================================== |
| 1407 |
|
| 1408 |
DO J=1,sNy |
| 1409 |
DO I=1,sNx |
| 1410 |
QNET(I,J,bi,bj) = r_QbyATM_cover(I,J) + r_QbyATM_open(I,J) |
| 1411 |
& - ( d_HEFFbyOCNonICE(I,J) + |
| 1412 |
& d_HSNWbyOCNonSNW(I,J)/ICE2SNOW + |
| 1413 |
& d_HEFFbyNEG(I,J) + |
| 1414 |
& d_HSNWbyNEG(I,J)/ICE2SNOW ) |
| 1415 |
& * maskC(I,J,kSurface,bi,bj) |
| 1416 |
QSW(I,J,bi,bj) = a_QSWbyATM_cover(I,J) + a_QSWbyATM_open(I,J) |
| 1417 |
ENDDO |
| 1418 |
ENDDO |
| 1419 |
|
| 1420 |
#ifdef ALLOW_DIAGNOSTICS |
| 1421 |
IF ( useDiagnostics ) THEN |
| 1422 |
IF ( DIAGNOSTICS_IS_ON('SIqneto ',myThid) ) THEN |
| 1423 |
DO J=1,sNy |
| 1424 |
DO I=1,sNx |
| 1425 |
DIAGarray(I,J) = r_QbyATM_open(I,J) * convertHI2Q |
| 1426 |
ENDDO |
| 1427 |
ENDDO |
| 1428 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIqneto ',0,1,3,bi,bj,myThid) |
| 1429 |
ENDIF |
| 1430 |
IF ( DIAGNOSTICS_IS_ON('SIqneti ',myThid) ) THEN |
| 1431 |
DO J=1,sNy |
| 1432 |
DO I=1,sNx |
| 1433 |
DIAGarray(I,J) = r_QbyATM_cover(I,J) * convertHI2Q |
| 1434 |
ENDDO |
| 1435 |
ENDDO |
| 1436 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIqneti ',0,1,3,bi,bj,myThid) |
| 1437 |
ENDIF |
| 1438 |
ENDIF |
| 1439 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 1440 |
|
| 1441 |
C switch heat fluxes from 'effective' ice meters to W/m2 |
| 1442 |
C ====================================================== |
| 1443 |
|
| 1444 |
DO J=1,sNy |
| 1445 |
DO I=1,sNx |
| 1446 |
QNET(I,J,bi,bj) = QNET(I,J,bi,bj)*convertHI2Q |
| 1447 |
QSW(I,J,bi,bj) = QSW(I,J,bi,bj)*convertHI2Q |
| 1448 |
ENDDO |
| 1449 |
ENDDO |
| 1450 |
|
| 1451 |
C compute net fresh water flux leaving/entering |
| 1452 |
C the ocean, accounting for fresh/salt water stocks. |
| 1453 |
C ================================================== |
| 1454 |
|
| 1455 |
#ifdef ALLOW_ATM_TEMP |
| 1456 |
DO J=1,sNy |
| 1457 |
DO I=1,sNx |
| 1458 |
tmpscal1= d_HSNWbyATMonSNW(I,J)/ICE2SNOW |
| 1459 |
& +d_HFRWbyRAIN(I,J) |
| 1460 |
& +d_HSNWbyOCNonSNW(I,J)/ICE2SNOW |
| 1461 |
& +d_HEFFbyOCNonICE(I,J) |
| 1462 |
& +d_HEFFbyATMonOCN(I,J) |
| 1463 |
& +d_HEFFbyNEG(I,J) |
| 1464 |
& +d_HSNWbyNEG(I,J)/ICE2SNOW |
| 1465 |
#ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET |
| 1466 |
& +a_FWbySublim(I,J) |
| 1467 |
#endif /* SEAICE_ADD_SUBLIMATION_TO_FWBUDGET */ |
| 1468 |
EmPmR(I,J,bi,bj) = maskC(I,J,kSurface,bi,bj)*( |
| 1469 |
& ( EVAP(I,J,bi,bj)-PRECIP(I,J,bi,bj) ) |
| 1470 |
& * ( ONE - AREApreTH(I,J) ) |
| 1471 |
#ifdef ALLOW_RUNOFF |
| 1472 |
& - RUNOFF(I,J,bi,bj) |
| 1473 |
#endif /* ALLOW_RUNOFF */ |
| 1474 |
& + tmpscal1*convertHI2PRECIP |
| 1475 |
& )*rhoConstFresh |
| 1476 |
ENDDO |
| 1477 |
ENDDO |
| 1478 |
|
| 1479 |
#ifdef ALLOW_MEAN_SFLUX_COST_CONTRIBUTION |
| 1480 |
DO J=1,sNy |
| 1481 |
DO I=1,sNx |
| 1482 |
frWtrAtm(I,J,bi,bj) = maskC(I,J,kSurface,bi,bj)*( |
| 1483 |
& PRECIP(I,J,bi,bj) |
| 1484 |
& - EVAP(I,J,bi,bj) |
| 1485 |
& *( ONE - AREApreTH(I,J) ) |
| 1486 |
& + RUNOFF(I,J,bi,bj) |
| 1487 |
& )*rhoConstFresh |
| 1488 |
ENDDO |
| 1489 |
ENDDO |
| 1490 |
#endif |
| 1491 |
#endif /* ALLOW_ATM_TEMP */ |
| 1492 |
|
| 1493 |
#ifdef SEAICE_DEBUG |
| 1494 |
CALL PLOT_FIELD_XYRL( QSW,'Current QSW ', myIter, myThid ) |
| 1495 |
CALL PLOT_FIELD_XYRL( QNET,'Current QNET ', myIter, myThid ) |
| 1496 |
CALL PLOT_FIELD_XYRL( EmPmR,'Current EmPmR ', myIter, myThid ) |
| 1497 |
#endif /* SEAICE_DEBUG */ |
| 1498 |
|
| 1499 |
C Sea Ice Load on the sea surface. |
| 1500 |
C ================================= |
| 1501 |
|
| 1502 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 1503 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1504 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj,key=iicekey,byte=isbyte |
| 1505 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 1506 |
|
| 1507 |
IF ( useRealFreshWaterFlux ) THEN |
| 1508 |
DO J=1,sNy |
| 1509 |
DO I=1,sNx |
| 1510 |
#ifdef SEAICE_CAP_ICELOAD |
| 1511 |
tmpscal1 = HEFF(I,J,bi,bj)*SEAICE_rhoIce |
| 1512 |
& + HSNOW(I,J,bi,bj)*SEAICE_rhoSnow |
| 1513 |
tmpscal2 = min(tmpscal1,heffTooHeavy*rhoConst) |
| 1514 |
#else |
| 1515 |
tmpscal2 = HEFF(I,J,bi,bj)*SEAICE_rhoIce |
| 1516 |
& + HSNOW(I,J,bi,bj)*SEAICE_rhoSnow |
| 1517 |
#endif |
| 1518 |
sIceLoad(i,j,bi,bj) = tmpscal2 |
| 1519 |
ENDDO |
| 1520 |
ENDDO |
| 1521 |
ENDIF |
| 1522 |
|
| 1523 |
C close bi,bj loops |
| 1524 |
ENDDO |
| 1525 |
ENDDO |
| 1526 |
|
| 1527 |
RETURN |
| 1528 |
END |
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