/[MITgcm]/MITgcm/pkg/thsice/thsice_step_fwd.F
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revision 1.15 by jmc, Sun Mar 26 00:45:40 2006 UTC revision 1.18 by jmc, Wed Apr 4 02:40:42 2007 UTC
# Line 9  C     !INTERFACE: Line 9  C     !INTERFACE:
9        SUBROUTINE THSICE_STEP_FWD(        SUBROUTINE THSICE_STEP_FWD(
10       I             bi, bj, iMin, iMax, jMin, jMax,       I             bi, bj, iMin, iMax, jMin, jMax,
11       I             prcAtm,       I             prcAtm,
      U             evpAtm, flxSW,  
12       I             myTime, myIter, myThid )       I             myTime, myIter, myThid )
13  C     !DESCRIPTION: \bv  C     !DESCRIPTION: \bv
14  C     *==========================================================*  C     *==========================================================*
# Line 30  C     === Global variables === Line 29  C     === Global variables ===
29  #include "THSICE_PARAMS.h"  #include "THSICE_PARAMS.h"
30  #include "THSICE_VARS.h"  #include "THSICE_VARS.h"
31  #include "THSICE_TAVE.h"  #include "THSICE_TAVE.h"
32    #include "THSICE_2DYN.h"
33          INTEGER siLo, siHi, sjLo, sjHi
34          PARAMETER ( siLo = 1-OLx , siHi = sNx+OLx )
35          PARAMETER ( sjLo = 1-OLy , sjHi = sNy+OLy )
36    
37  C     !INPUT/OUTPUT PARAMETERS:  C     !INPUT/OUTPUT PARAMETERS:
38  C     === Routine arguments ===  C     === Routine arguments ===
39    C- input:
40  C     bi,bj   :: tile indices  C     bi,bj   :: tile indices
41  C   iMin,iMax :: computation domain: 1rst index range  C   iMin,iMax :: computation domain: 1rst index range
42  C   jMin,jMax :: computation domain: 2nd  index range  C   jMin,jMax :: computation domain: 2nd  index range
 C- input:  
43  C     prcAtm  :: total precip from the atmosphere [kg/m2/s]  C     prcAtm  :: total precip from the atmosphere [kg/m2/s]
44  C     evpAtm  :: (Inp) evaporation to the atmosphere [kg/m2/s] (>0 if evaporate)  C     myTime  :: current Time of simulation [s]
45  C     flxSW   :: (Inp) short-wave heat flux (+=down): downward comp. only  C     myIter  :: current Iteration number in simulation
46  C                      (part.1), becomes net SW flux into ocean (part.2).  C     myThid  :: my Thread Id number
47    C-- Use fluxes hold in commom blocks
48    C- input:
49    C     icFlxSW :: net short-wave heat flux (+=down) below sea-ice, into ocean
50    C     icFlxAtm  :: net Atmospheric surf. heat flux over sea-ice [W/m2], (+=down)
51    C     icFrwAtm  :: evaporation over sea-ice to the atmosphere [kg/m2/s] (+=up)
52  C- output  C- output
53  C     evpAtm  :: (Out) net fresh-water flux (E-P) from the atmosphere [m/s] (+=up)  C     icFlxAtm  :: net Atmospheric surf. heat flux over ice+ocean [W/m2], (+=down)
54  C     flxSW   :: (Out) net surf. heat flux from the atmosphere [W/m2], (+=down)  C     icFrwAtm  :: net fresh-water flux (E-P) from the atmosphere [m/s] (+=up)
 C     myTime  :: time counter for this thread  
 C     myIter  :: iteration counter for this thread  
 C     myThid  :: thread number for this instance of the routine.  
55        INTEGER bi,bj        INTEGER bi,bj
56        INTEGER iMin, iMax        INTEGER iMin, iMax
57        INTEGER jMin, jMax        INTEGER jMin, jMax
58        _RL prcAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL prcAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
       _RL evpAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)  
       _RL flxSW (1-OLx:sNx+OLx,1-OLy:sNy+OLy)  
59        _RL  myTime        _RL  myTime
60        INTEGER myIter        INTEGER myIter
61        INTEGER myThid        INTEGER myThid
# Line 61  CEOP Line 64  CEOP
64  #ifdef ALLOW_THSICE  #ifdef ALLOW_THSICE
65  C     !LOCAL VARIABLES:  C     !LOCAL VARIABLES:
66  C     === Local variables ===  C     === Local variables ===
67  C     snowPr    :: snow precipitation [kg/m2/s]  C     iceFrac   :: fraction of grid area covered in ice
 C     agingTime :: aging time scale (s)  
 C     ageFac    :: snow aging factor [1]  
 C     albedo    :: surface albedo [0-1]  
 C     flxAtm    :: net heat flux from the atmosphere (+=down) [W/m2]  
 C     frwAtm    :: net fresh-water flux (E-P) to the atmosphere  [kg/m2/s]  
 C     Fbot      :: the oceanic heat flux already incorporated (ice_therm)  
68  C     flx2oc    :: net heat flux from the ice to the ocean (+=down) [W/m2]  C     flx2oc    :: net heat flux from the ice to the ocean (+=down) [W/m2]
69  C     frw2oc    :: fresh-water flux from the ice to the ocean  C     frw2oc    :: fresh-water flux from the ice to the ocean
70  C     fsalt     :: mass salt flux to the ocean  C     fsalt     :: mass salt flux to the ocean
71  C     frzmltMxL :: ocean mixed-layer freezing/melting potential [W/m2]  C     frzmltMxL :: ocean mixed-layer freezing/melting potential [W/m2]
72  C     TFrzOce   :: sea-water freezing temperature [oC] (function of S)  C     tFrzOce   :: sea-water freezing temperature [oC] (function of S)
73  C     isIceFree :: true for ice-free grid-cell that remains ice-free  C     isIceFree :: true for ice-free grid-cell that remains ice-free
74        INTEGER i,j  C     ageFac    :: snow aging factor [1]
75        _RL snowPr  C     snowFac   :: snowing refreshing-age factor [units of 1/snowPr]
       _RL agingTime, ageFac  
       _RL albedo  
       _RL flxAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)  
       _RL frwAtm  
       _RL flx2oc  
       _RL frw2oc  
       _RL fsalt  
       _RL TFrzOce, cphm, frzmltMxL  
       _RL Fbot, esurp  
       _RL opFrac, icFrac  
       _RL oceV2s, oceTs  
       _RL compact, hIce, hSnow, Tsf, Tice(nlyr), qicen(nlyr)  
       _RL tmpflx(0:2), tmpdTs  
76        LOGICAL isIceFree(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        LOGICAL isIceFree(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
77          _RL     iceFrac  (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
78          _RL     flx2oc   (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
79          _RL     frw2oc   (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
80          _RL     fsalt    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
81          _RL     tFrzOce  (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
82          _RL     frzmltMxL(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
83          _RL ageFac
84          _RL snowFac
85          _RL cphm
86          _RL opFrac, icFrac
87  #ifdef ALLOW_DIAGNOSTICS  #ifdef ALLOW_DIAGNOSTICS
88        _RL tmpFac        _RL tmpFac
89  #endif  #endif
90          INTEGER i,j
91          LOGICAL dBugFlag
92    
93        LOGICAL dBug  C-    define grid-point location where to print debugging values
94    #include "THSICE_DEBUG.h"
95    
96   1010 FORMAT(A,1P4E14.6)   1010 FORMAT(A,1P4E14.6)
       dBug = .FALSE.  
 C-    Initialise flxAtm  
        DO j = 1-Oly, sNy+Oly  
         DO i = 1-Olx, sNx+Olx  
           flxAtm(i,j) = 0.  
           isIceFree(i,j) = .FALSE.  
         ENDDO  
        ENDDO  
   
       IF ( fluidIsWater ) THEN  
        DO j = jMin, jMax  
         DO i = iMin, iMax  
 c        dBug = ( bi.EQ.3 .AND. i.EQ.15 .AND. j.EQ.11 )  
97    
98  C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|  C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
 C    part.1 : ice-covered fraction ;  
 C     Solve for surface and ice temperature (implicitly) ; compute surf. fluxes  
 C-------  
          IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN  
           icFrac  = iceMask(i,j,bi,bj)  
           TFrzOce = -mu_Tf*sOceMxL(i,j,bi,bj)  
           hIce    = iceHeight(i,j,bi,bj)  
           hSnow   = snowHeight(i,j,bi,bj)  
           Tsf     = Tsrf(i,j,bi,bj)  
           qicen(1)= Qice1(i,j,bi,bj)  
           qicen(2)= Qice2(i,j,bi,bj)  
           IF ( dBug ) THEN  
            WRITE(6,'(A,2I4,2I2)') 'ThSI_FWD: i,j=',i,j,bi,bj  
            WRITE(6,1010) 'ThSI_FWD:-0- iceMask, hIc, hSn, Tsf  =',  
      &                                 icFrac, hIce,hSnow,Tsf  
           ENDIF  
   
           CALL THSICE_ALBEDO(  
      I               hIce, hSnow, Tsf, snowAge(i,j,bi,bj),  
      O               albedo,  
      I               myThid )  
           flxSW(i,j) = flxSW(i,j)*(1. _d 0 - albedo)  
           siceAlb(i,j,bi,bj) = albedo  
   
           CALL THSICE_SOLVE4TEMP(  
      I          useBulkForce, tmpflx, TFrzOce, hIce, hSnow,  
      U          flxSW(i,j), Tsf, qicen,  
      O          Tice, sHeating(i,j,bi,bj), flxCndBt(i,j,bi,bj),  
      O          tmpdTs, flxAtm(i,j), evpAtm(i,j),  
      I          i,j, bi,bj, myThid)  
99    
100  #ifdef SHORTWAVE_HEATING  C-    Initialise
101  C--    Update Fluxes :        dBugFlag = debugLevel.GE.debLevB
102            opFrac= 1. _d 0-icFrac        DO j = 1-OLy, sNy+OLy
103            Qsw(i,j,bi,bj)=-icFrac*flxSW(i,j) +opFrac*Qsw(i,j,bi,bj)          DO i = 1-OLx, sNx+OLx
104              isIceFree(i,j) = .FALSE.
105              saltFlux(i,j,bi,bj) = 0. _d 0
106    #ifdef ALLOW_AUTODIFF_TAMC
107              iceFrac(i,j) = 0.
108  #endif  #endif
 C--    Update Sea-Ice state :  
           Tsrf(i,j,bi,bj) =Tsf  
           Tice1(i,j,bi,bj)=Tice(1)  
           Tice2(i,j,bi,bj)=Tice(2)  
           Qice1(i,j,bi,bj)=qicen(1)  
           Qice2(i,j,bi,bj)=qicen(2)  
           IF ( dBug ) THEN  
            WRITE(6,1010) 'ThSI_FWD: Tsf, Tice(1,2), TFrzOce =',  
      &                              Tsf, Tice, TFrzOce  
            WRITE(6,1010) 'ThSI_FWD: sHeat,fxCndBt, fxAtm,evAtm=',  
      &                  sHeating(i,j,bi,bj), flxCndBt(i,j,bi,bj),  
      &                  flxAtm(i,j), evpAtm(i,j)  
           ENDIF  
          ENDIF  
109          ENDDO          ENDDO
110          ENDDO
111    
112          ageFac = 1. _d 0 - thSIce_deltaT/snowAgTime
113          snowFac = thSIce_deltaT/(rhos*hNewSnowAge)
114          DO j = jMin, jMax
115           DO i = iMin, iMax
116            IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN
117    C--  Snow aging :
118              snowAge(i,j,bi,bj) = thSIce_deltaT
119         &                       + snowAge(i,j,bi,bj)*ageFac
120              IF ( snowPrc(i,j,bi,bj).GT.0. _d 0 )
121         &      snowAge(i,j,bi,bj) = snowAge(i,j,bi,bj)
122         &          * EXP( - snowFac*snowPrc(i,j,bi,bj) )
123    c    &          * EXP( -(thSIce_deltaT*snowPrc(i,j,bi,bj)/rhos)
124    c    &                  /hNewSnowAge )
125    C-------
126    C note: Any flux of mass (here fresh water) that enter or leave the system
127    C       with a non zero energy HAS TO be counted: add snow precip.
128              icFlxAtm(i,j,bi,bj) = icFlxAtm(i,j,bi,bj)
129         &                        - Lfresh*snowPrc(i,j,bi,bj)
130    C--
131            ENDIF
132         ENDDO         ENDDO
133        ENDIF        ENDDO
       dBug = .FALSE.  
134    
135  #ifdef ALLOW_DIAGNOSTICS  #ifdef ALLOW_DIAGNOSTICS
136        IF ( useDiagnostics ) THEN        IF ( useDiagnostics ) THEN
# Line 189  C    part.2 : ice-covered fraction ; Line 154  C    part.2 : ice-covered fraction ;
154  C     change in ice/snow thickness and ice-fraction  C     change in ice/snow thickness and ice-fraction
155  C     note: can only reduce the ice-fraction but not increase it.  C     note: can only reduce the ice-fraction but not increase it.
156  C-------  C-------
       agingTime = 50. _d 0 * 86400. _d 0  
       ageFac = 1. _d 0 - thSIce_deltaT/agingTime  
157        DO j = jMin, jMax        DO j = jMin, jMax
158         DO i = iMin, iMax         DO i = iMin, iMax
 c       dBug = ( bi.EQ.3 .AND. i.EQ.15 .AND. j.EQ.11 )  
159    
160          TFrzOce = -mu_Tf*sOceMxL(i,j,bi,bj)          tFrzOce(i,j) = -mu_Tf*sOceMxL(i,j,bi,bj)
         oceTs   = tOceMxL(i,j,bi,bj)  
161          cphm    = cpwater*rhosw*hOceMxL(i,j,bi,bj)          cphm    = cpwater*rhosw*hOceMxL(i,j,bi,bj)
162          frzmltMxL = (TFrzOce-oceTs)*cphm/ocean_deltaT          frzmltMxL(i,j) = ( tFrzOce(i,j)-tOceMxL(i,j,bi,bj) )
163         &                 * cphm/ocean_deltaT
164          Fbot   = 0. _d 0          iceFrac(i,j) = iceMask(i,j,bi,bj)
165          saltFlux(i,j,bi,bj) = 0. _d 0          flx2oc(i,j)  = icFlxSW(i,j,bi,bj)
         compact= iceMask(i,j,bi,bj)  
166  C-------  C-------
167          IF (dBug .AND. (frzmltMxL.GT.0. .OR. compact.GT.0.) ) THEN  #ifdef ALLOW_DBUG_THSICE
168            IF ( dBug(i,j,bi,bj) ) THEN
169             IF (frzmltMxL(i,j).GT.0. .OR. iceFrac(i,j).GT.0.) THEN
170            WRITE(6,'(A,2I4,2I2)') 'ThSI_FWD: i,j=',i,j,bi,bj            WRITE(6,'(A,2I4,2I2)') 'ThSI_FWD: i,j=',i,j,bi,bj
171            WRITE(6,1010) 'ThSI_FWD:-1- iceMask, hIc, hSn, Tsf  =',            WRITE(6,1010) 'ThSI_FWD:-1- iceMask, hIc, hSn, Tsf  =',
172       &                  compact, iceHeight(i,j,bi,bj),       &                  iceFrac(i,j), iceHeight(i,j,bi,bj),
173       &                  snowHeight(i,j,bi,bj), Tsrf(i,j,bi,bj)       &                  snowHeight(i,j,bi,bj), Tsrf(i,j,bi,bj)
174            WRITE(6,1010) 'ThSI_FWD: ocTs,TFrzOce,frzmltMxL,Qnet=',            WRITE(6,1010) 'ThSI_FWD: ocTs,tFrzOce,frzmltMxL,Qnet=',
175       &                     oceTs, TFrzOce, frzmltMxL,Qnet(i,j,bi,bj)       &                     tOceMxL(i,j,bi,bj), tFrzOce(i,j),
176         &                     frzmltMxL(i,j), Qnet(i,j,bi,bj)
177             ENDIF
178             IF (iceFrac(i,j).GT.0.)
179         &    WRITE(6,1010) 'ThSI_FWD: icFrac,flxAtm,evpAtm,flxSnw=',
180         &      iceFrac(i,j), icFlxAtm(i,j,bi,bj),
181         &      icFrwAtm(i,j,bi,bj),-Lfresh*snowPrc(i,j,bi,bj)
182          ENDIF          ENDIF
183  C-------  #endif
184          IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN         ENDDO
185          ENDDO
           oceV2s  = v2ocMxL(i,j,bi,bj)  
           snowPr  = snowPrc(i,j,bi,bj)  
           hIce    = iceHeight(i,j,bi,bj)  
           hSnow   = snowHeight(i,j,bi,bj)  
           Tsf     = Tsrf(i,j,bi,bj)  
           qicen(1)= Qice1(i,j,bi,bj)  
           qicen(2)= Qice2(i,j,bi,bj)  
           flx2oc  = flxSW(i,j)  
   
           CALL THSICE_CALC_THICKN(  
      I          frzmltMxL, TFrzOce, oceTs, oceV2s, snowPr,  
      I          sHeating(i,j,bi,bj), flxCndBt(i,j,bi,bj), evpAtm(i,j),  
      U          compact, hIce, hSnow, Tsf, qicen, flx2oc,  
      O          frw2oc, fsalt, Fbot,  
      I          dBug, myThid)  
   
 C- note : snowPr was not supposed to be modified in THSICE_THERM ;  
 C         but to reproduce old results, is reset to zero if Tsf >= 0  
           snowPrc(i,j,bi,bj) = snowPr  
   
 C--  Snow aging :  
           snowAge(i,j,bi,bj) = thSIce_deltaT  
      &                       + snowAge(i,j,bi,bj)*ageFac  
           IF ( snowPr.GT.0. _d 0 )  
      &      snowAge(i,j,bi,bj) = snowAge(i,j,bi,bj)  
      &          * EXP( -(thSIce_deltaT*snowPr/rhos)/hNewSnowAge )  
 C--  
   
 C-- Diagnostic of Atmospheric Fluxes over sea-ice :  
           frwAtm = evpAtm(i,j) - prcAtm(i,j)  
 C note: Any flux of mass (here fresh water) that enter or leave the system  
 C       with a non zero energy HAS TO be counted: add snow precip.  
           flxAtm(i,j) = flxAtm(i,j) - Lfresh*snowPrc(i,j,bi,bj)  
   
 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|  
       IF (dBug) WRITE(6,1010) 'ThSI_FWD: icFrac,flxAtm,evpAtm,flxSnw=',  
      &  iceMask(i,j,bi,bj),flxAtm(i,j),evpAtm(i,j),-Lfresh*snowPr  
       IF (dBug) WRITE(6,1010) 'ThSI_FWD: compact,flx2oc,fsalt,frw2oc=',  
      &   compact,flx2oc,fsalt,frw2oc  
 #ifdef CHECK_ENERGY_CONSERV  
           icFrac = iceMask(i,j,bi,bj)  
           CALL THSICE_CHECK_CONSERV( dBug, i, j, bi, bj, 0,  
      I            icFrac, compact, hIce, hSnow, qicen,  
      I            flx2oc, frw2oc, fsalt, flxAtm(i,j), frwAtm,  
      I            myTime, myIter, myThid )  
 #endif /* CHECK_ENERGY_CONSERV */  
 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|  
186    
187  C--    Update Sea-Ice state :        CALL THSICE_CALC_THICKN(
188  c         iceMask(i,j,bi,bj)=compact       I          bi, bj, siLo, siHi, sjLo, sjHi,
189            iceHeight(i,j,bi,bj) = hIce       I          iMin,iMax, jMin,jMax, dBugFlag,
190            snowHeight(i,j,bi,bj)= hSnow       I          iceMask(siLo,sjLo,bi,bj), tFrzOce,
191            Tsrf(i,j,bi,bj) =Tsf       I          tOceMxL(siLo,sjLo,bi,bj), v2ocMxL(siLo,sjLo,bi,bj),
192            Qice1(i,j,bi,bj)=qicen(1)       I          snowPrc(siLo,sjLo,bi,bj), prcAtm,
193            Qice2(i,j,bi,bj)=qicen(2)       I          sHeating(siLo,sjLo,bi,bj), flxCndBt(siLo,sjLo,bi,bj),
194         U          iceFrac, iceHeight(siLo,sjLo,bi,bj),
195         U          snowHeight(siLo,sjLo,bi,bj), Tsrf(siLo,sjLo,bi,bj),
196         U          Qice1(siLo,sjLo,bi,bj), Qice2(siLo,sjLo,bi,bj),
197         U          icFrwAtm(siLo,sjLo,bi,bj), frzmltMxL, flx2oc,
198         O          frw2oc, fsalt,
199         I          myTime, myIter, myThid )
200    
201  C--    Net fluxes :  C--    Net fluxes :
202            frw2oc = frw2oc + (prcAtm(i,j)-snowPrc(i,j,bi,bj))        DO j = jMin, jMax
203           DO i = iMin, iMax
204            IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN
205  C-     weighted average net fluxes:  C-     weighted average net fluxes:
206            icFrac = iceMask(i,j,bi,bj)            icFrac = iceMask(i,j,bi,bj)
207            opFrac= 1. _d 0-icFrac            opFrac= 1. _d 0-icFrac
208            flxAtm(i,j) = icFrac*flxAtm(i,j) - opFrac*Qnet(i,j,bi,bj)            icFlxAtm(i,j,bi,bj) = icFrac*icFlxAtm(i,j,bi,bj)
209            frwAtm =     icFrac*frwAtm + opFrac*rhofw*EmPmR(i,j,bi,bj)       &                        - opFrac*Qnet(i,j,bi,bj)
210            Qnet(i,j,bi,bj)=-icFrac*flx2oc +opFrac*Qnet(i,j,bi,bj)            icFrwAtm(i,j,bi,bj) = icFrac*icFrwAtm(i,j,bi,bj)
211            EmPmR(i,j,bi,bj)=-icFrac*frw2oc/rhofw+opFrac*EmPmR(i,j,bi,bj)       &                        + opFrac*rhofw*EmPmR(i,j,bi,bj)
212            saltFlux(i,j,bi,bj)=-icFrac*fsalt            Qnet(i,j,bi,bj) = -icFrac*flx2oc(i,j) + opFrac*Qnet(i,j,bi,bj)
213              EmPmR(i,j,bi,bj)= -icFrac*frw2oc(i,j)/rhofw
214            IF (dBug) WRITE(6,1010)       &                    +  opFrac*EmPmR(i,j,bi,bj)
215       &          'ThSI_FWD:-3- compact, hIc, hSn, Qnet =',            saltFlux(i,j,bi,bj) = -icFrac*fsalt(i,j)
216       &                        compact,hIce,hSnow,Qnet(i,j,bi,bj)  
217    #ifdef ALLOW_DBUG_THSICE
218              IF (dBug(i,j,bi,bj)) WRITE(6,1010)
219         &          'ThSI_FWD:-3- iceFrac, hIc, hSn, Qnet =',
220         &           iceFrac(i,j), iceHeight(i,j,bi,bj),
221         &           snowHeight(i,j,bi,bj), Qnet(i,j,bi,bj)
222    #endif
223    
224          ELSEIF (hOceMxL(i,j,bi,bj).gt.0. _d 0) THEN          ELSEIF (hOceMxL(i,j,bi,bj).gt.0. _d 0) THEN
225            flxAtm(i,j) =  -Qnet(i,j,bi,bj)            icFlxAtm(i,j,bi,bj) = -Qnet(i,j,bi,bj)
226            frwAtm = rhofw*EmPmR(i,j,bi,bj)            icFrwAtm(i,j,bi,bj) = rhofw*EmPmR(i,j,bi,bj)
227          ELSE          ELSE
228            flxAtm(i,j) = 0. _d 0            icFlxAtm(i,j,bi,bj) = 0. _d 0
229            frwAtm      = 0. _d 0            icFrwAtm(i,j,bi,bj) = 0. _d 0
230          ENDIF          ENDIF
231           ENDDO
232          ENDDO
233    
234  C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|  C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
235  C    part.3 : freezing of sea-water  C    part.3 : freezing of sea-water
236  C     over ice-free fraction and what is left from ice-covered fraction  C     over ice-free fraction and what is left from ice-covered fraction
237  C-------  C-------
238  c       compact= iceMask(i,j,bi,bj)        CALL THSICE_EXTEND(
239          hIce   = iceHeight(i,j,bi,bj)       I          bi, bj, siLo, siHi, sjLo, sjHi,
240          hSnow  = snowHeight(i,j,bi,bj)       I          iMin,iMax, jMin,jMax, dBugFlag,
241         I          frzmltMxL, tFrzOce,
242          esurp  = frzmltMxL - Fbot*iceMask(i,j,bi,bj)       I          tOceMxL(siLo,sjLo,bi,bj),
243          IF (esurp.GT.0. _d 0) THEN       U          iceFrac, iceHeight(siLo,sjLo,bi,bj),
244            icFrac = compact       U          snowHeight(siLo,sjLo,bi,bj), Tsrf(siLo,sjLo,bi,bj),
245            qicen(1)= Qice1(i,j,bi,bj)       U          Tice1(siLo,sjLo,bi,bj), Tice2(siLo,sjLo,bi,bj),
246            qicen(2)= Qice2(i,j,bi,bj)       U          Qice1(siLo,sjLo,bi,bj), Qice2(siLo,sjLo,bi,bj),
247            CALL THSICE_EXTEND(       O          flx2oc, frw2oc, fsalt,
248       I               esurp, TFrzOce,       I          myTime, myIter, myThid )
249       U               oceTs, compact, hIce, hSnow, qicen,  
250       O               flx2oc, frw2oc, fsalt,        DO j = jMin, jMax
251       I               dBug, myThid )         DO i = iMin, iMax
252  C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|          IF (frzmltMxL(i,j).GT.0. _d 0) THEN
       IF (dBug) WRITE(6,1010) 'ThSI_FWD: compact,flx2oc,fsalt,frw2oc='  
      &                 ,compact,flx2oc,fsalt,frw2oc  
 #ifdef CHECK_ENERGY_CONSERV  
           tmpflx(1) = 0.  
           tmpflx(2) = 0.  
           CALL THSICE_CHECK_CONSERV( dBug, i, j, bi, bj, 1,  
      I            icFrac, compact, hIce, hSnow, qicen,  
      I            flx2oc, frw2oc, fsalt, tmpflx(1), tmpflx(2),  
      I            myTime, myIter, myThid )  
 #endif /* CHECK_ENERGY_CONSERV */  
 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|  
 C--    Update Sea-Ice state :  
           IF ( compact.GT.0. _d 0 .AND. icFrac.EQ.0. _d 0) THEN  
              Tsrf(i,j,bi,bj)  = TFrzOce  
              Tice1(i,j,bi,bj) = TFrzOce  
              Tice2(i,j,bi,bj) = TFrzOce  
              Qice1(i,j,bi,bj) = qicen(1)  
              Qice2(i,j,bi,bj) = qicen(2)  
           ENDIF  
           iceHeight(i,j,bi,bj) = hIce  
           snowHeight(i,j,bi,bj)= hSnow  
253  C--    Net fluxes :  C--    Net fluxes :
254            Qnet(i,j,bi,bj) = Qnet(i,j,bi,bj) - flx2oc            Qnet(i,j,bi,bj) = Qnet(i,j,bi,bj) - flx2oc(i,j)
255            EmPmR(i,j,bi,bj)= EmPmR(i,j,bi,bj)- frw2oc/rhofw            EmPmR(i,j,bi,bj)= EmPmR(i,j,bi,bj)- frw2oc(i,j)/rhofw
256            saltFlux(i,j,bi,bj)=saltFlux(i,j,bi,bj) - fsalt            saltFlux(i,j,bi,bj)=saltFlux(i,j,bi,bj) - fsalt(i,j)
257    
258            IF (dBug) WRITE(6,1010)  #ifdef ALLOW_DBUG_THSICE
259       &          'ThSI_FWD:-4- compact, hIc, hSn, Qnet =',            IF (dBug(i,j,bi,bj)) WRITE(6,1010)
260       &                        compact,hIce,hSnow,Qnet(i,j,bi,bj)       &         'ThSI_FWD:-4- iceFrac, hIc, hSn, Qnet =',
261  C--   - if esurp > 0 : end       &           iceFrac(i,j), iceHeight(i,j,bi,bj),
262         &           snowHeight(i,j,bi,bj), Qnet(i,j,bi,bj)
263    #endif
264          ENDIF          ENDIF
265    
266          IF ( hOceMxL(i,j,bi,bj).GT.0. _d 0 )          IF ( hOceMxL(i,j,bi,bj).GT.0. _d 0 )
267       &    isIceFree(i,j) = iceMask(i,j,bi,bj).LE.0. _d 0       &    isIceFree(i,j) = iceMask(i,j,bi,bj).LE.0. _d 0
268       &                       .AND.   compact .LE.0. _d 0       &                  .AND.   iceFrac(i,j) .LE.0. _d 0
269          IF ( compact .GT. 0. _d 0 ) THEN          IF ( iceFrac(i,j) .GT. 0. _d 0 ) THEN
270            iceMask(i,j,bi,bj)=compact            iceMask(i,j,bi,bj)=iceFrac(i,j)
271            IF ( hSnow .EQ. 0. _d 0 ) snowAge(i,j,bi,bj) = 0. _d 0            IF ( snowHeight(i,j,bi,bj).EQ.0. _d 0 )
272         &     snowAge(i,j,bi,bj) = 0. _d 0
273          ELSE          ELSE
274            iceMask(i,j,bi,bj)  = 0. _d 0            iceMask(i,j,bi,bj)  = 0. _d 0
275            iceHeight(i,j,bi,bj)= 0. _d 0            iceHeight(i,j,bi,bj)= 0. _d 0
276            snowHeight(i,j,bi,bj)=0. _d 0            snowHeight(i,j,bi,bj)=0. _d 0
277            snowAge(i,j,bi,bj)  = 0. _d 0            snowAge(i,j,bi,bj)  = 0. _d 0
278            Tsrf(i,j,bi,bj)     = oceTs            Tsrf(i,j,bi,bj)     = tOceMxL(i,j,bi,bj)
279            Tice1(i,j,bi,bj)    = 0. _d 0            Tice1(i,j,bi,bj)    = 0. _d 0
280            Tice2(i,j,bi,bj)    = 0. _d 0            Tice2(i,j,bi,bj)    = 0. _d 0
281            Qice1(i,j,bi,bj)    = 0. _d 0            Qice1(i,j,bi,bj)    = 0. _d 0
282            Qice2(i,j,bi,bj)    = 0. _d 0            Qice2(i,j,bi,bj)    = 0. _d 0
283          ENDIF          ENDIF
284    
 C--     Return atmospheric fluxes in evpAtm & flxSW (same sign and units):  
         evpAtm(i,j) = frwAtm  
         flxSW (i,j) = flxAtm(i,j)  
   
285  #ifdef ATMOSPHERIC_LOADING  #ifdef ATMOSPHERIC_LOADING
286  C--     Compute Sea-Ice Loading (= mass of sea-ice + snow / area unit)  C--     Compute Sea-Ice Loading (= mass of sea-ice + snow / area unit)
287          sIceLoad(i,j,bi,bj) = ( snowHeight(i,j,bi,bj)*rhos          sIceLoad(i,j,bi,bj) = ( snowHeight(i,j,bi,bj)*rhos
# Line 377  C--     Compute Sea-Ice Loading (= mass Line 292  C--     Compute Sea-Ice Loading (= mass
292         ENDDO         ENDDO
293        ENDDO        ENDDO
294    
295          IF ( thSIceAdvScheme.GT.0 ) THEN
296    C--   note: those fluxes should to be added directly to Qnet, EmPmR & saltFlux
297           DO j = jMin, jMax
298            DO i = iMin, iMax
299             IF ( hOceMxL(i,j,bi,bj).GT.0. _d 0 ) THEN
300              Qnet(i,j,bi,bj) = Qnet(i,j,bi,bj) - oceQnet(i,j,bi,bj)
301              EmPmR(i,j,bi,bj)= EmPmR(i,j,bi,bj)- oceFWfx(i,j,bi,bj)/rhofw
302              saltFlux(i,j,bi,bj)=saltFlux(i,j,bi,bj) - oceSflx(i,j,bi,bj)
303             ENDIF
304            ENDDO
305           ENDDO
306          ENDIF
307    
308  #ifdef ALLOW_BULK_FORCE  #ifdef ALLOW_BULK_FORCE
309        IF ( useBulkForce ) THEN        IF ( useBulkForce ) THEN
310          CALL BULKF_FLUX_ADJUST(          CALL BULKF_FLUX_ADJUST(
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