/[MITgcm]/MITgcm/pkg/thsice/thsice_step_temp.F
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Annotation of /MITgcm/pkg/thsice/thsice_step_temp.F

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Revision 1.2 - (hide annotations) (download)
Tue May 30 22:48:59 2006 UTC (18 years ago) by mlosch
Branch: MAIN
CVS Tags: checkpoint58l_post, mitgcm_mapl_00, checkpoint58u_post, checkpoint58w_post, checkpoint58r_post, checkpoint58n_post, checkpoint58x_post, checkpoint58t_post, checkpoint58h_post, checkpoint58q_post, checkpoint58j_post, checkpoint58f_post, checkpoint58i_post, checkpoint58g_post, checkpoint58o_post, checkpoint58y_post, checkpoint58k_post, checkpoint58v_post, checkpoint58s_post, checkpoint58p_post, checkpoint58m_post
Changes since 1.1: +3 -2 lines 
o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
  to pkg/seaice):
  - new routines thsice_map_exf and thsice_get_exf provide the interface
  - add an additional formal parameter to thsice_solve4temp
1 mlosch 1.2 C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_step_temp.F,v 1.1 2006/05/25 18:01:50 jmc Exp $
2 jmc 1.1 C $Name: $
3    
4     #include "THSICE_OPTIONS.h"
5    
6     CBOP
7     C !ROUTINE: THSICE_STEP_TEMP
8     C !INTERFACE:
9     SUBROUTINE THSICE_STEP_TEMP(
10     I bi, bj, iMin, iMax, jMin, jMax,
11     I myTime, myIter, myThid )
12     C !DESCRIPTION: \bv
13     C *==========================================================*
14     C | S/R THSICE_STEP_TEMP
15     C | o Step Forward Surface and SeaIce Temperature.
16     C *==========================================================*
17     C \ev
18    
19     C !USES:
20     IMPLICIT NONE
21    
22     C === Global variables ===
23     #include "SIZE.h"
24     #include "EEPARAMS.h"
25     #include "PARAMS.h"
26     #include "FFIELDS.h"
27     #include "THSICE_SIZE.h"
28     #include "THSICE_PARAMS.h"
29     #include "THSICE_VARS.h"
30     #include "THSICE_TAVE.h"
31     INTEGER siLo, siHi, sjLo, sjHi
32     PARAMETER ( siLo = 1-OLx , siHi = sNx+OLx )
33     PARAMETER ( sjLo = 1-OLy , sjHi = sNy+OLy )
34    
35     C !INPUT/OUTPUT PARAMETERS:
36     C === Routine arguments ===
37     C- input:
38     C bi,bj :: tile indices
39     C iMin,iMax :: computation domain: 1rst index range
40     C jMin,jMax :: computation domain: 2nd index range
41     C myTime :: time counter for this thread
42     C myIter :: iteration counter for this thread
43     C myThid :: thread number for this instance of the routine.
44     C-- Modify fluxes hold in commom blocks
45     C- input:
46     C icFlxSW :: (Inp) short-wave heat flux (+=down): downward comp. only
47     C- output
48     C icFlxSW :: (Out) net SW flux into ocean (+=down)
49     C icFlxAtm:: net flux of energy from the atmosphere [W/m2] (+=down)
50     C icFrwAtm:: evaporation to the atmosphere (kg/m2/s) (>0 if evaporate)
51     C--
52     INTEGER bi,bj
53     INTEGER iMin, iMax
54     INTEGER jMin, jMax
55     _RL myTime
56     INTEGER myIter
57     INTEGER myThid
58     CEOP
59    
60     #ifdef ALLOW_THSICE
61     C !LOCAL VARIABLES:
62     C === Local variables ===
63     C tFrzOce :: sea-water freezing temperature [oC] (function of S)
64     C dTsrf :: surf. temp adjusment: Ts^n+1 - Ts^n
65     INTEGER i,j
66     _RL tFrzOce(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
67     c _RL dTsrf (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
68     _RL tmpflx(1:2), tmpdTs(1:2)
69     #ifdef SHORTWAVE_HEATING
70     _RL opFrac, icFrac
71     #endif
72     LOGICAL dBugFlag
73    
74     C- define grid-point location where to print debugging values
75     #include "THSICE_DEBUG.h"
76    
77     1010 FORMAT(A,1P4E14.6)
78    
79     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
80    
81     dBugFlag = debugLevel.GE.debLevB
82     C- Initialise flxAtm,evpAtm
83     DO j = 1-OLy, sNy+OLy
84     DO i = 1-OLx, sNx+OLx
85     icFlxAtm(i,j,bi,bj) = 0.
86     icFrwAtm(i,j,bi,bj) = 0.
87     ENDDO
88     ENDDO
89    
90     c IF ( fluidIsWater ) THEN
91     CALL THSICE_ALBEDO(
92     I bi, bj, siLo, siHi, sjLo, sjHi,
93     I iMin,iMax, jMin,jMax,
94     I iceMask(siLo,sjLo,bi,bj), iceHeight(siLo,sjLo,bi,bj),
95     I snowHeight(siLo,sjLo,bi,bj), Tsrf(siLo,sjLo,bi,bj),
96     I snowAge(siLo,sjLo,bi,bj),
97     O siceAlb(siLo,sjLo,bi,bj),
98     I myTime, myIter, myThid )
99    
100     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
101     C part.1 : ice-covered fraction ;
102     C Solve for surface and ice temperature (implicitly) ; compute surf. fluxes
103     C-------
104     DO j = jMin, jMax
105     DO i = iMin, iMax
106     IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN
107     #ifdef ALLOW_DBUG_THSICE
108     IF ( dBug(i,j,bi,bj) ) THEN
109     WRITE(6,'(A,2I4,2I2)') 'ThSI_STEP_T: i,j=',i,j,bi,bj
110     WRITE(6,1010) 'ThSI_STEP_T: iceMask, hIc, hSn, Tsf =',
111     & iceMask(i,j,bi,bj), iceHeight(i,j,bi,bj),
112     & snowHeight(i,j,bi,bj), Tsrf(i,j,bi,bj)
113     ENDIF
114     #endif
115     C- surface net SW flux:
116     icFlxSW(i,j,bi,bj) = icFlxSW(i,j,bi,bj)
117     & *(1. _d 0 - siceAlb(i,j,bi,bj))
118     tFrzOce(i,j) = -mu_Tf*sOceMxL(i,j,bi,bj)
119     ELSE
120     tFrzOce(i,j) = 0. _d 0
121     ENDIF
122     ENDDO
123     ENDDO
124    
125     CALL THSICE_SOLVE4TEMP(
126     I bi, bj, siLo, siHi, sjLo, sjHi,
127 mlosch 1.2 I iMin,iMax, jMin,jMax, dBugFlag,
128     I useBulkForce, useEXF,
129 jmc 1.1 I iceMask(siLo,sjLo,bi,bj), iceHeight(siLo,sjLo,bi,bj),
130     I snowHeight(siLo,sjLo,bi,bj), tFrzOce, tmpflx,
131     U icFlxSW(siLo,sjLo,bi,bj), Tsrf(siLo,sjLo,bi,bj),
132     U Qice1(siLo,sjLo,bi,bj), Qice2(siLo,sjLo,bi,bj),
133     O Tice1(siLo,sjLo,bi,bj), Tice2(siLo,sjLo,bi,bj), tmpdTs,
134     O sHeating(siLo,sjLo,bi,bj), flxCndBt(siLo,sjLo,bi,bj),
135     O icFlxAtm(siLo,sjLo,bi,bj), icFrwAtm(siLo,sjLo,bi,bj),
136     I myTime, myIter, myThid )
137    
138     #ifdef SHORTWAVE_HEATING
139     DO j = jMin, jMax
140     DO i = iMin, iMax
141     IF (iceMask(i,j,bi,bj).GT.0. _d 0) THEN
142     icFrac = iceMask(i,j,bi,bj)
143     opFrac = 1. _d 0 - icFrac
144     C-- Update Fluxes :
145     Qsw(i,j,bi,bj) = opFrac*Qsw(i,j,bi,bj)
146     & - icFrac*icFlxSW(i,j,bi,bj)
147     ENDIF
148     ENDDO
149     ENDDO
150     #endif /* SHORTWAVE_HEATING */
151     c ENDIF
152    
153     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
154     #endif /* ALLOW_THSICE */
155    
156     RETURN
157     END
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