pkg/thsice/thsice_ini_vars.F

C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_ini_vars.F,v 1.15 2008/05/23 21:24:41 dimitri Exp $
C $Name:  $

#include "THSICE_OPTIONS.h"
#ifdef ALLOW_AIM
# include "AIM_OPTIONS.h"
#endif

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

C     !DESCRIPTION: \bv
C     *==========================================================*
C     | S/R THSICE_INI_VARS
C     | o initialize THermo_SeaICE variables
C     *==========================================================*
C     \ev

C     !USES:
      IMPLICIT NONE

C     === Global variables ===
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "FFIELDS.h"
#include "THSICE_PARAMS.h"
#include "THSICE_VARS.h"
#ifdef ALLOW_AIM
# include "AIM_FFIELDS.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     bi,bj  :: Loop counters
C     i,j    :: Loop counters
      INTEGER bi, bj
      INTEGER i, j
      INTEGER prec
c     CHARACTER*(MAX_LEN_FNAM) fn
      _RL v2Loc
      _RL Tf

c     set up ice arrays to zero if starting ice
      DO bj = myByLo(myThid), myByHi(myThid)
        DO bi = myBxLo(myThid), myBxHi(myThid)
C-        state variables :
          DO j=1-OLy,sNy+OLy
           DO i=1-OLx,sNx+OLx
            iceMask(i,j,bi,bj)  = 0. _d 0
            iceHeight(i,j,bi,bj)= 0. _d 0
            snowHeight(i,j,bi,bj)=0. _d 0
            Tsrf(i,j,bi,bj)     = 0. _d 0
            Tice1(i,j,bi,bj)    = 0. _d 0
            Tice2(i,j,bi,bj)    = 0. _d 0
            Qice1(i,j,bi,bj)    = 0. _d 0
            Qice2(i,j,bi,bj)    = 0. _d 0
            snowAge(i,j,bi,bj)  = 0. _d 0
           ENDDO
          ENDDO
C-        fluxes :
          DO j=1-OLy,sNy+OLy
           DO i=1-OLx,sNx+OLx
            sHeating(i,j,bi,bj) = 0. _d 0
            flxCndBt(i,j,bi,bj) = 0. _d 0
            snowPrc(i,j,bi,bj)  = 0. _d 0
            siceAlb(i,j,bi,bj)  = 0. _d 0
            icFlxSW (i,j,bi,bj) = 0. _d 0
            icFlxAtm(i,j,bi,bj) = 0. _d 0
            icFrwAtm(i,j,bi,bj) = 0. _d 0
C-        needed when using advection/diffusion:
            oceFWfx(i,j,bi,bj)  = 0. _d 0
            oceSflx(i,j,bi,bj)  = 0. _d 0
            oceQnet(i,j,bi,bj)  = 0. _d 0
           ENDDO
          ENDDO
C-        oceanic mixed layer state :
          v2Loc = vMxL_default*vMxL_default
          DO j=1-OLy,sNy+OLy
           DO i=1-OLx,sNx+OLx
             hOceMxL(i,j,bi,bj) = hMxL_default
             tOceMxL(i,j,bi,bj) = 0. _d 0
             sOceMxL(i,j,bi,bj) = sMxL_default
             v2ocMxL(i,j,bi,bj) = v2Loc
           ENDDO
          ENDDO
#ifdef ALLOW_AIM
          IF ( useAIM ) THEN
C-        Mask mixed layer depth : depth is used in thsice slab_ocean
C         and this mask is used in thsice_advdiff and if coupled
           DO j=1-OLy,sNy+OLy
            DO i=1-OLx,sNx+OLx
             IF ( aim_landFr(i,j,bi,bj).EQ.1. _d 0 )
     &       hOceMxL(i,j,bi,bj) = 0.
            ENDDO
           ENDDO
          ENDIF
#endif /* ALLOW_AIM */
        ENDDO
      ENDDO

C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|

      IF ( startIceModel.LE.0 .AND. nIter0.NE.0 ) THEN
C--     Read ice pickup fields
       _BARRIER
        prec=precFloat64
        CALL THSICE_READ_PICKUP( prec, nIter0, myThid )

      ELSE
C--     Read initial conditions:
        _BEGIN_MASTER( myThid )
        IF ( thSIceFract_InitFile .NE. ' ' ) THEN
         CALL READ_REC_XY_RL(thSIceFract_InitFile,iceMask,1,0,myThid)
        ENDIF
        IF ( thSIceThick_InitFile .NE. ' ' ) THEN
         CALL READ_REC_XY_RL(thSIceThick_InitFile,iceHeight,1,0,myThid)
        ENDIF
        IF ( thSIceSnowH_InitFile .NE. ' ' ) THEN
         CALL READ_REC_XY_RL(thSIceSnowH_InitFile,snowHeight,1,0,myThid)
        ENDIF
        IF ( thSIceSnowA_InitFile .NE. ' ' ) THEN
         CALL READ_REC_XY_RL(thSIceSnowA_InitFile,snowAge,1,0,myThid)
        ENDIF
        IF ( thSIceEnthp_InitFile .NE. ' ' ) THEN
         CALL READ_REC_XY_RL(thSIceEnthp_InitFile,Qice1,1,0,myThid)
         CALL READ_REC_XY_RL(thSIceEnthp_InitFile,Qice2,2,0,myThid)
        ENDIF
        IF ( thSIceTsurf_InitFile .NE. ' ' ) THEN
         CALL READ_REC_XY_RS(thSIceTsurf_InitFile,Tsrf,1,0,myThid)
        ENDIF
        _END_MASTER(myThid)
        IF ( thSIceEnthp_InitFile .EQ. ' ' ) THEN
C-    enthalpy of new ice in J/kg, taken from thsice_extend.F with Tf beeing
C     the freezing Temp of seawater computed from a fixed salinity (31.5 psu)
C     Tf = -mu_Tf*salinity = -1.70 deg C;  Qice1 ~ 3.2e5;  Qice2 ~ 3.4e5
         Tf = -1.70 _d 0
         DO bj = myByLo(myThid), myByHi(myThid)
          DO bi = myBxLo(myThid), myBxHi(myThid)
           DO j=1-OLy,sNy+OLy
            DO i=1-OLx,sNx+OLx
             IF (iceMask(i,j,bi,bj) .NE. 0. _d 0) THEN
              Qice1(i,j,bi,bj) = -cpWater*Tmlt1
     &             + cpIce *(Tmlt1-Tf) + Lfresh*(1. _d 0-Tmlt1/Tf)
              Qice2(i,j,bi,bj) = -cpIce *Tf + Lfresh
             ENDIF
            ENDDO
           ENDDO
          ENDDO
         ENDDO
        ENDIF
      ENDIF

      _EXCH_XY_R8(iceMask,myThid)
      _EXCH_XY_R8(iceHeight, myThid)
      _EXCH_XY_R8(snowHeight,myThid)
      _EXCH_XY_R8(Tsrf,   myThid)
      _EXCH_XY_R8(Tice1,  myThid)
      _EXCH_XY_R8(Tice2,  myThid)
      _EXCH_XY_R8(Qice1,  myThid)
      _EXCH_XY_R8(Qice2,  myThid)
      _EXCH_XY_R8(snowAge,myThid)

C--     Initialise Sea-Ice Loading for SeaIce-Dynamics :
      IF ( useSEAICE ) THEN
       DO bj = myByLo(myThid), myByHi(myThid)
        DO bi = myBxLo(myThid), myBxHi(myThid)
         DO j=1-OLy,sNy+OLy
          DO i=1-OLx,sNx+OLx
           sIceLoad(i,j,bi,bj) = ( snowHeight(i,j,bi,bj)*rhos
     &          + iceHeight(i,j,bi,bj)*rhoi
     &          )*iceMask(i,j,bi,bj)
          ENDDO
         ENDDO
        ENDDO
       ENDDO
      ENDIF

#endif /* ALLOW_THSICE */

      RETURN
      END
1	dimitri	1.16	C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_ini_vars.F,v 1.15 2008/05/23 21:24:41 dimitri Exp $
2	jmc	1.1	C $Name: $
3
4			#include "THSICE_OPTIONS.h"
5	jmc	1.8	#ifdef ALLOW_AIM
6			# include "AIM_OPTIONS.h"
7			#endif
8	jmc	1.1
9	jmc	1.2	CBOP
10			C !ROUTINE: THSICE_INI_VARS
11			C !INTERFACE:
12	jmc	1.1	SUBROUTINE THSICE_INI_VARS( myThid )
13	jmc	1.2
14			C !DESCRIPTION: \bv
15	jmc	1.1	C ==========================================================
16	jmc	1.2	C \| S/R THSICE_INI_VARS
17	jmc	1.1	C \| o initialize THermo_SeaICE variables
18			C ==========================================================
19	jmc	1.2	C \ev
20
21			C !USES:
22	jmc	1.1	IMPLICIT NONE
23
24			C === Global variables ===
25			#include "SIZE.h"
26			#include "EEPARAMS.h"
27			#include "PARAMS.h"
28	jmc	1.7	#include "FFIELDS.h"
29	jmc	1.1	#include "THSICE_PARAMS.h"
30	jmc	1.2	#include "THSICE_VARS.h"
31	jmc	1.8	#ifdef ALLOW_AIM
32			# include "AIM_FFIELDS.h"
33			#endif
34	jmc	1.1
35	jmc	1.2	C !INPUT/OUTPUT PARAMETERS:
36	jmc	1.1	C == Routine arguments ==
37	jmc	1.8	C myThid :: My Thread Id. number
38	jmc	1.1	INTEGER myThid
39	jmc	1.2	CEOP
40	jmc	1.1
41			#ifdef ALLOW_THSICE
42			C == Local variables ==
43	jmc	1.2	C bi,bj :: Loop counters
44			C i,j :: Loop counters
45	jmc	1.1	INTEGER bi, bj
46	jmc	1.8	INTEGER i, j
47	jmc	1.1	INTEGER prec
48	jmc	1.5	c CHARACTER*(MAX_LEN_FNAM) fn
49	jmc	1.2	_RL v2Loc
50	dimitri	1.15	_RL Tf
51	jmc	1.1
52			c set up ice arrays to zero if starting ice
53	jmc	1.8	DO bj = myByLo(myThid), myByHi(myThid)
54			DO bi = myBxLo(myThid), myBxHi(myThid)
55	jmc	1.2	C- state variables :
56	jmc	1.6	DO j=1-OLy,sNy+OLy
57			DO i=1-OLx,sNx+OLx
58	jmc	1.2	iceMask(i,j,bi,bj) = 0. _d 0
59			iceHeight(i,j,bi,bj)= 0. _d 0
60	jmc	1.1	snowHeight(i,j,bi,bj)=0. _d 0
61	jmc	1.2	Tsrf(i,j,bi,bj) = 0. _d 0
62			Tice1(i,j,bi,bj) = 0. _d 0
63			Tice2(i,j,bi,bj) = 0. _d 0
64			Qice1(i,j,bi,bj) = 0. _d 0
65			Qice2(i,j,bi,bj) = 0. _d 0
66			snowAge(i,j,bi,bj) = 0. _d 0
67			ENDDO
68			ENDDO
69			C- fluxes :
70	jmc	1.6	DO j=1-OLy,sNy+OLy
71			DO i=1-OLx,sNx+OLx
72	jmc	1.2	sHeating(i,j,bi,bj) = 0. _d 0
73			flxCndBt(i,j,bi,bj) = 0. _d 0
74			snowPrc(i,j,bi,bj) = 0. _d 0
75	jmc	1.4	siceAlb(i,j,bi,bj) = 0. _d 0
76	jmc	1.6	icFlxSW (i,j,bi,bj) = 0. _d 0
77			icFlxAtm(i,j,bi,bj) = 0. _d 0
78			icFrwAtm(i,j,bi,bj) = 0. _d 0
79	jmc	1.11	C- needed when using advection/diffusion:
80	heimbach	1.9	oceFWfx(i,j,bi,bj) = 0. _d 0
81			oceSflx(i,j,bi,bj) = 0. _d 0
82			oceQnet(i,j,bi,bj) = 0. _d 0
83	jmc	1.2	ENDDO
84			ENDDO
85			C- oceanic mixed layer state :
86			v2Loc = vMxL_default*vMxL_default
87	jmc	1.6	DO j=1-OLy,sNy+OLy
88			DO i=1-OLx,sNx+OLx
89	jmc	1.2	hOceMxL(i,j,bi,bj) = hMxL_default
90			tOceMxL(i,j,bi,bj) = 0. _d 0
91			sOceMxL(i,j,bi,bj) = sMxL_default
92			v2ocMxL(i,j,bi,bj) = v2Loc
93	jmc	1.1	ENDDO
94			ENDDO
95	jmc	1.8	#ifdef ALLOW_AIM
96			IF ( useAIM ) THEN
97			C- Mask mixed layer depth : depth is used in thsice slab_ocean
98			C and this mask is used in thsice_advdiff and if coupled
99			DO j=1-OLy,sNy+OLy
100			DO i=1-OLx,sNx+OLx
101			IF ( aim_landFr(i,j,bi,bj).EQ.1. _d 0 )
102			& hOceMxL(i,j,bi,bj) = 0.
103			ENDDO
104			ENDDO
105			ENDIF
106			#endif /* ALLOW_AIM */
107	jmc	1.1	ENDDO
108	jmc	1.8	ENDDO
109	jmc	1.1
110	jmc	1.3	C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-\|--+----\|
111
112	jmc	1.2	IF ( startIceModel.LE.0 .AND. nIter0.NE.0 ) THEN
113	jmc	1.1	C-- Read ice pickup fields
114			_BARRIER
115			prec=precFloat64
116	jmc	1.2	CALL THSICE_READ_PICKUP( prec, nIter0, myThid )
117	jmc	1.1
118	jmc	1.3	ELSE
119			C-- Read initial conditions:
120			_BEGIN_MASTER( myThid )
121	dimitri	1.15	IF ( thSIceFract_InitFile .NE. ' ' ) THEN
122			CALL READ_REC_XY_RL(thSIceFract_InitFile,iceMask,1,0,myThid)
123			ENDIF
124	dimitri	1.12	IF ( thSIceThick_InitFile .NE. ' ' ) THEN
125			CALL READ_REC_XY_RL(thSIceThick_InitFile,iceHeight,1,0,myThid)
126			ENDIF
127	jmc	1.3	IF ( thSIceSnowH_InitFile .NE. ' ' ) THEN
128			CALL READ_REC_XY_RL(thSIceSnowH_InitFile,snowHeight,1,0,myThid)
129			ENDIF
130			IF ( thSIceSnowA_InitFile .NE. ' ' ) THEN
131			CALL READ_REC_XY_RL(thSIceSnowA_InitFile,snowAge,1,0,myThid)
132			ENDIF
133			IF ( thSIceEnthp_InitFile .NE. ' ' ) THEN
134			CALL READ_REC_XY_RL(thSIceEnthp_InitFile,Qice1,1,0,myThid)
135			CALL READ_REC_XY_RL(thSIceEnthp_InitFile,Qice2,2,0,myThid)
136	dimitri	1.15	ENDIF
137			IF ( thSIceTsurf_InitFile .NE. ' ' ) THEN
138			CALL READ_REC_XY_RS(thSIceTsurf_InitFile,Tsrf,1,0,myThid)
139			ENDIF
140			_END_MASTER(myThid)
141			IF ( thSIceEnthp_InitFile .EQ. ' ' ) THEN
142			C- enthalpy of new ice in J/kg, taken from thsice_extend.F with Tf beeing
143			C the freezing Temp of seawater computed from a fixed salinity (31.5 psu)
144	dimitri	1.16	C Tf = -mu_Tf*salinity = -1.70 deg C; Qice1 ~ 3.2e5; Qice2 ~ 3.4e5
145	dimitri	1.15	Tf = -1.70 _d 0
146	dimitri	1.12	DO bj = myByLo(myThid), myByHi(myThid)
147			DO bi = myBxLo(myThid), myBxHi(myThid)
148			DO j=1-OLy,sNy+OLy
149			DO i=1-OLx,sNx+OLx
150			IF (iceMask(i,j,bi,bj) .NE. 0. _d 0) THEN
151	dimitri	1.15	Qice1(i,j,bi,bj) = -cpWater*Tmlt1
152			& + cpIce (Tmlt1-Tf) + Lfresh(1. _d 0-Tmlt1/Tf)
153			Qice2(i,j,bi,bj) = -cpIce *Tf + Lfresh
154	dimitri	1.12	ENDIF
155			ENDDO
156			ENDDO
157			ENDDO
158			ENDDO
159	jmc	1.3	ENDIF
160			ENDIF
161
162	dimitri	1.15	_EXCH_XY_R8(iceMask,myThid)
163			_EXCH_XY_R8(iceHeight, myThid)
164			_EXCH_XY_R8(snowHeight,myThid)
165			_EXCH_XY_R8(Tsrf, myThid)
166			_EXCH_XY_R8(Tice1, myThid)
167			_EXCH_XY_R8(Tice2, myThid)
168			_EXCH_XY_R8(Qice1, myThid)
169			_EXCH_XY_R8(Qice2, myThid)
170			_EXCH_XY_R8(snowAge,myThid)
171	jmc	1.1
172	jmc	1.7	C-- Initialise Sea-Ice Loading for SeaIce-Dynamics :
173	dimitri	1.15	IF ( useSEAICE ) THEN
174			DO bj = myByLo(myThid), myByHi(myThid)
175			DO bi = myBxLo(myThid), myBxHi(myThid)
176			DO j=1-OLy,sNy+OLy
177			DO i=1-OLx,sNx+OLx
178			sIceLoad(i,j,bi,bj) = ( snowHeight(i,j,bi,bj)*rhos
179			& + iceHeight(i,j,bi,bj)*rhoi
180			& )*iceMask(i,j,bi,bj)
181	jmc	1.7	ENDDO
182	dimitri	1.15	ENDDO
183			ENDDO
184			ENDDO
185			ENDIF
186	jmc	1.7
187	jmc	1.1	#endif /* ALLOW_THSICE */
188
189			RETURN
190			END