C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/thsice/thsice_readparms.F,v 1.16 2009/07/08 23:35:05 jmc Exp $
C $Name:  $

#include "THSICE_OPTIONS.h"

CBOP
C     !ROUTINE: THSICE_READPARMS
C     !INTERFACE:
      SUBROUTINE THSICE_READPARMS( myThid )

C     !DESCRIPTION: \bv
C     *==========================================================*
C     | S/R THSICE_READPARMS
C     | o Routine to initialize THSICE parameters and constants
C     *==========================================================*
C     | Initialize Th-Sea-ICE parameters, read in data.ice
C     *==========================================================*
C     \ev

C     !USES:
      IMPLICIT NONE

C     === Global variables ===
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "THSICE_PARAMS.h"
#ifdef ALLOW_MNC
#include "MNC_PARAMS.h"
#endif

C     !INPUT/OUTPUT PARAMETERS:
C     === Routine arguments ===
C     myThid    :: My Thread Id. number
      INTEGER myThid
CEOP

#ifdef ALLOW_THSICE

C     === Local variables ===
C     msgBuf    :: Informational/error message buffer
C     iUnit     :: Work variable for IO unit number
      CHARACTER*(MAX_LEN_MBUF) msgBuf
      INTEGER iUnit

C--   Th-Sea-ICE parameter
      NAMELIST /THSICE_CONST/
     &  rhos, rhoi, rhosw, rhofw,
     &  cpIce, cpWater,
     &  kIce, kSnow,
     &  bMeltCoef, Lfresh, qsnow,
     &  albColdSnow, albWarmSnow, tempSnowAlb,
     &  albOldSnow, hNewSnowAge, snowAgTime,
     &  albIceMax, albIceMin, hAlbIce, hAlbSnow,
     &  i0swFrac, ksolar, dhSnowLin,
     &  saltIce, S_winton, mu_Tf,
     &  Tf0kel, Terrmax, nitMaxTsf,
     &  hIceMin, hiMax, hsMax, iceMaskMax, iceMaskMin,
     &  fracEnMelt, fracEnFreez, hThinIce, hThickIce, hNewIceMax

      NAMELIST /THSICE_PARM01/
     &     startIceModel, stepFwd_oceMxL, thSIce_calc_albNIR,
     &     thSIce_deltaT, thSIce_dtTemp,
     &     ocean_deltaT, tauRelax_MxL,
     &     hMxL_default, sMxL_default, vMxL_default,
     &     thSIce_diffK, thSIceAdvScheme, stressReduction,
     &     thSIce_taveFreq, thSIce_diagFreq, thSIce_monFreq,
     &     thSIce_tave_mnc, thSIce_snapshot_mnc, thSIce_mon_mnc,
     &     thSIce_pickup_read_mnc, thSIce_pickup_write_mnc,
     &     thSIceFract_InitFile, thSIceThick_InitFile,
     &     thSIceSnowH_InitFile, thSIceSnowA_InitFile,
     &     thSIceEnthp_InitFile, thSIceTsurf_InitFile

      _BEGIN_MASTER(myThid)

      WRITE(msgBuf,'(A)') ' THSICE_READPARMS: opening data.ice'
      CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
     &                    SQUEEZE_RIGHT , 1)

      CALL OPEN_COPY_DATA_FILE(
     I                          'data.ice', 'THSICE_READPARMS',
     O                          iUnit,
     I                          myThid )

C--   Default values (constants)
      rhos     = 330. _d 0
      rhoi     = 900. _d 0
      rhosw    = rhoConst
      rhofw    = rhoConstFresh
      cpIce    = 2106. _d 0
      cpWater  = HeatCapacity_Cp
      kIce     = 2.03 _d 0
      kSnow    = 0.30 _d 0
      bMeltCoef=0.006 _d 0
      Lfresh   = 3.34 _d 5
      qsnow    = Lfresh
      albColdSnow= 0.85 _d 0
      albWarmSnow= 0.70 _d 0
      tempSnowAlb= -10. _d 0
      albOldSnow = 0.55 _d 0
      albIceMax  = 0.65 _d 0
      albIceMin  = 0.20 _d 0
      hAlbIce    = 0.50 _d 0
      hAlbSnow   = 0.30 _d 0
      hNewSnowAge= 2. _d -3
      snowAgTime = 50. _d 0 * 86400. _d 0
      i0swFrac = 0.3 _d 0
      ksolar   = 1.5 _d 0
      dhSnowLin= 0. _d 0
      saltIce  = 4. _d 0
      S_winton = 1. _d 0
      mu_Tf    = 0.054 _d 0
      Tf0kel   = celsius2K
      Terrmax  = 5.0 _d -1
      nitMaxTsf= 20
      hIceMin    = 1. _d -2
      hiMax      = 10. _d 0
      hsMax      = 10. _d 0
      iceMaskMax =  1. _d 0
      iceMaskMin = 0.1 _d 0
      fracEnMelt = 0.4 _d 0
      fracEnFreez=  0. _d 0
      hThinIce   = 0.2 _d 0
      hThickIce  = 2.5 _d 0
      hNewIceMax = UNSET_RL

C--   Default values (parameters)
      stepFwd_oceMxL  = .FALSE.
      thSIce_calc_albNIR  = .FALSE.
      startIceModel   = 0
      thSIce_deltaT   = dTtracerLev(1)
      thSIce_dtTemp  = UNSET_RL
      ocean_deltaT    = dTtracerLev(1)
      tauRelax_MxL    = 0. _d 0
      hMxL_default    = 50. _d 0
      sMxL_default    = 35. _d 0
      vMxL_default    = 5. _d -2
      thSIce_diffK    = 0. _d 0
      thSIceAdvScheme = 0
      stressReduction = 1. _d 0
      IF ( useSEAICE ) stressReduction = 0. _d 0
      thSIce_taveFreq = taveFreq
      thSIce_diagFreq = dumpFreq
      thSIce_monFreq  = monitorFreq
#ifdef ALLOW_MNC
      thSIce_tave_mnc     = timeave_mnc
      thSIce_snapshot_mnc = snapshot_mnc
      thSIce_mon_mnc      = monitor_mnc
      thSIce_pickup_read_mnc  = pickup_read_mnc
      thSIce_pickup_write_mnc = pickup_write_mnc
#else
      thSIce_tave_mnc     = .FALSE.
      thSIce_snapshot_mnc = .FALSE.
      thSIce_mon_mnc      = .FALSE.
      thSIce_pickup_read_mnc  = .FALSE.
      thSIce_pickup_write_mnc = .FALSE.
#endif
      thSIceFract_InitFile = ' '
      thSIceThick_InitFile = ' '
      thSIceSnowH_InitFile = ' '
      thSIceSnowA_InitFile = ' '
      thSIceEnthp_InitFile = ' '
      thSIceTsurf_InitFile = ' '


C--   Read parameters from open data file
      READ(UNIT=iUnit,NML=THSICE_CONST)
      WRITE(msgBuf,'(A)') ' THSICE_READPARMS: read THSICE_CONST'
      CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
     &                    SQUEEZE_RIGHT , 1)

      READ(UNIT=iUnit,NML=THSICE_PARM01)
      WRITE(msgBuf,'(A)') ' THSICE_READPARMS: read THSICE_PARM01'
      CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
     &                    SQUEEZE_RIGHT , 1)

C--   Close the open data file
      CLOSE(iUnit)

C-    neutral default:
      IF ( hNewIceMax .EQ. UNSET_RL ) hNewIceMax = hiMax

C     If using the same time step for both icetop temp solver
C     and ice thickness/growth, use thSIce_deltaT value
      IF ( thSIce_dtTemp .EQ. UNSET_RL ) thSIce_dtTemp=thSIce_deltaT

C-    Define other constants (from previous ones):
      Tmlt1=-mu_Tf*S_winton
      floodFac = (rhosw - rhoi)/rhos

C     Set I/O parameters
      thSIce_tave_mdsio     = .TRUE.
      thSIce_snapshot_mdsio = .TRUE.
      thSIce_mon_stdio      = .TRUE.
      thSIce_pickup_write_mdsio = .TRUE.
#ifdef ALLOW_MNC
      IF (useMNC) THEN
        IF ( .NOT.outputTypesInclusive
     &       .AND. thSIce_tave_mnc ) thSIce_tave_mdsio = .FALSE.
        IF ( .NOT.outputTypesInclusive
     &       .AND. thSIce_snapshot_mnc )
     &       thSIce_snapshot_mdsio = .FALSE.
        IF ( .NOT.outputTypesInclusive
     &       .AND. thSIce_mon_mnc  ) thSIce_mon_stdio  = .FALSE.
        IF ( .NOT.outputTypesInclusive
     &       .AND. thSIce_pickup_write_mnc  )
     &       thSIce_pickup_write_mdsio = .FALSE.
      ENDIF
#endif

C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
C--   Check parameter consistency:
      IF ( thSIceAdvScheme.EQ.0 .AND. thSIce_diffK.NE.0. ) THEN
        WRITE(msgBuf,'(2A)')
     &   'THSICE_READPARMS: to use thSIce_diffK, needs to select',
     &   ' one advection scheme (thSIceAdvScheme<>0)'
        CALL PRINT_ERROR( msgBuf , myThid )
        STOP 'ABNORMAL END: THSICE_READPARMS'
      ENDIF
#ifndef ALLOW_GENERIC_ADVDIFF
      IF ( thSIceAdvScheme.NE.0 ) THEN
        WRITE(msgBuf,'(2A)')
     &   'THSICE_READPARMS: Need to compile "generic_advdiff" pkg',
     &   ' in order to use thSIceAdvScheme'
        CALL PRINT_ERROR( msgBuf , myThid )
        STOP 'ABNORMAL END: THSICE_READPARMS'
      ENDIF
#endif /* ndef ALLOW_GENERIC_ADVDIFF */

      IF ( useSEAICE .AND. stressReduction.NE.0. _d 0 ) THEN
C--     If useSEAICE=.true., the stress is computed in seaice_model,
C--     so that it does not need any further reduction
        WRITE(msgBuf,'(2A)')
     &   'THSICE_READPARMS: if useSEAICE, stress will be computed',
     &   ' by SEAICE pkg => no reduction'
        CALL PRINT_MESSAGE( msgBuf, errorMessageUnit,
     &                    SQUEEZE_RIGHT , myThid)
        WRITE(msgBuf,'(A)')
     &   'THSICE_READPARMS: WARNING: reset stressReduction to zero'
        CALL PRINT_MESSAGE( msgBuf, errorMessageUnit,
     &                    SQUEEZE_RIGHT , myThid)
        stressReduction = 0. _d 0
      ENDIF

C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
      iUnit = standardMessageUnit
c     CALL MDSFINDUNIT( iUnit, mythid )
c     OPEN(iUnit,file='thsice_check_params',status='unknown')
      WRITE(iUnit,*) 'ThSI: rhos      =',rhos
      WRITE(iUnit,*) 'ThSI: rhoi      =',rhoi
      WRITE(iUnit,*) 'ThSI: rhosw     =',rhosw
      WRITE(iUnit,*) 'ThSI: rhofw     =',rhofw
      WRITE(iUnit,*) 'ThSI: floodFac  =',floodFac
      WRITE(iUnit,*) 'ThSI: cpIce     =',cpIce
      WRITE(iUnit,*) 'ThSI: cpWater   =',cpWater
      WRITE(iUnit,*) 'ThSI: kIce      =',kIce
      WRITE(iUnit,*) 'ThSI: kSnow     =',kSnow
      WRITE(iUnit,*) 'ThSI: bMeltCoef =',bMeltCoef
      WRITE(iUnit,*) 'ThSI: Lfresh    =',Lfresh
      WRITE(iUnit,*) 'ThSI: qsnow     =',qsnow
      WRITE(iUnit,*) 'ThSI: albColdSnow=',albColdSnow
      WRITE(iUnit,*) 'ThSI: albWarmSnow=',albWarmSnow
      WRITE(iUnit,*) 'ThSI: tempSnowAlb=',tempSnowAlb
      WRITE(iUnit,*) 'ThSI: albOldSnow =',albOldSnow
      WRITE(iUnit,*) 'ThSI: hNewSnowAge=',hNewSnowAge
      WRITE(iUnit,*) 'ThSI: snowAgTime =',snowAgTime
      WRITE(iUnit,*) 'ThSI: albIceMax =',albIceMax
      WRITE(iUnit,*) 'ThSI: albIceMin =',albIceMin
      WRITE(iUnit,*) 'ThSI: hAlbIce   =',hAlbIce
      WRITE(iUnit,*) 'ThSI: hAlbSnow  =',hAlbSnow
      WRITE(iUnit,*) 'ThSI: i0swFrac  =',i0swFrac
      WRITE(iUnit,*) 'ThSI: ksolar    =',ksolar
      WRITE(iUnit,*) 'ThSI: dhSnowLin =',dhSnowLin
      WRITE(iUnit,*) 'ThSI: saltIce   =',saltIce
      WRITE(iUnit,*) 'ThSI: S_winton  =',S_winton
      WRITE(iUnit,*) 'ThSI: mu_Tf     =',mu_Tf
      WRITE(iUnit,*) 'ThSI: Tf0kel    =',Tf0kel
      WRITE(iUnit,*) 'ThSI: Tmlt1     =',Tmlt1
      WRITE(iUnit,*) 'ThSI: Terrmax   =',Terrmax
      WRITE(iUnit,*) 'ThSI: nitMaxTsf =',nitMaxTsf
      WRITE(iUnit,*) 'ThSI: hIceMin   =',hIceMin
      WRITE(iUnit,*) 'ThSI: hiMax     =',hiMax
      WRITE(iUnit,*) 'ThSI: hsMax     =',hsMax
      WRITE(iUnit,*) 'ThSI: iceMaskMax =',iceMaskMax
      WRITE(iUnit,*) 'ThSI: iceMaskMin =',iceMaskMin
      WRITE(iUnit,*) 'ThSI: fracEnMelt =',fracEnMelt
      WRITE(iUnit,*) 'ThSI: fracEnFreez=',fracEnFreez
      WRITE(iUnit,*) 'ThSI: hThinIce   =',hThinIce
      WRITE(iUnit,*) 'ThSI: hThickIce  =',hThickIce
      WRITE(iUnit,*) 'ThSI: hNewIceMax =',hNewIceMax
      WRITE(iUnit,*) 'ThSI: stressReduction =',stressReduction
      WRITE(iUnit,*) 'ThSI: thSIceAdvScheme =',thSIceAdvScheme
      WRITE(iUnit,*) 'ThSI: thSIce_diffK  =',thSIce_diffK
      WRITE(iUnit,*) 'ThSI: thSIce_deltaT =',thSIce_deltaT
      WRITE(iUnit,*) 'ThSI: ocean_deltaT  =',ocean_deltaT
      WRITE(iUnit,*) 'ThSI: stepFwd_oceMxL=',stepFwd_oceMxL
      WRITE(iUnit,*) 'ThSI: tauRelax_MxL  =',tauRelax_MxL
      WRITE(iUnit,*) 'ThSI: hMxL_default  =',hMxL_default
      WRITE(iUnit,*) 'ThSI: sMxL_default  =',sMxL_default
      WRITE(iUnit,*) 'ThSI: vMxL_default  =',vMxL_default
      WRITE(iUnit,*) 'ThSI: thSIce_taveFreq=',thSIce_taveFreq
      WRITE(iUnit,*) 'ThSI: thSIce_diagFreq=',thSIce_diagFreq
      WRITE(iUnit,*) 'ThSI: thSIce_monFreq =',thSIce_monFreq
      WRITE(iUnit,*) 'ThSI: startIceModel =',startIceModel
      IF (iUnit.NE.standardMessageUnit) CLOSE(iUnit)
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|

      _END_MASTER(myThid)

C--   Everyone else must wait for the parameters to be loaded
      _BARRIER

#endif /* ALLOW_THSICE */

      RETURN
      END