| 1 |
C $Header: |
| 2 |
|
| 3 |
#include "SEAICE_OPTIONS.h" |
| 4 |
|
| 5 |
CStartOfInterface |
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SUBROUTINE dynsolver( myTime, myIter, myThid ) |
| 7 |
C /==========================================================\ |
| 8 |
C | SUBROUTINE dynsolver | |
| 9 |
C | o Ice dynamics solver | |
| 10 |
C |==========================================================| |
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C \==========================================================/ |
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IMPLICIT NONE |
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|
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C === Global variables === |
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#include "SIZE.h" |
| 16 |
#include "EEPARAMS.h" |
| 17 |
#include "PARAMS.h" |
| 18 |
#include "FFIELDS.h" |
| 19 |
#include "SEAICE.h" |
| 20 |
#include "SEAICE_GRID.h" |
| 21 |
#include "SEAICE_PARAMS.h" |
| 22 |
#include "SEAICE_FFIELDS.h" |
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|
| 24 |
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. |
| 28 |
_RL myTime |
| 29 |
INTEGER myIter |
| 30 |
INTEGER myThid |
| 31 |
CEndOfInterface |
| 32 |
|
| 33 |
#ifdef ALLOW_SEAICE |
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|
| 35 |
C === Local variables === |
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C i,j,k,bi,bj - Loop counters |
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|
| 38 |
INTEGER i, j, k, bi, bj, kii |
| 39 |
_RL DWAT, DAIR, RHOICE, RHOAIR, SINWIN, COSWIN, SINWAT, COSWAT |
| 40 |
_RL GRAV, ECCEN, ECM2, GMIN, RADIUS, DELT1, DELT2, PSTAR |
| 41 |
_RL AAA |
| 42 |
|
| 43 |
_RL PRESS (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 44 |
_RL DAIRN (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 45 |
_RL DWATN (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 46 |
_RL FORCEX0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 47 |
_RL FORCEY0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 48 |
_RL E11 (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
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_RL E22 (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 50 |
_RL E12 (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 51 |
_RL COR_ICE (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
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_RL ZMAX (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 53 |
_RL ZMIN (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
| 54 |
|
| 55 |
C FIRST SET UP BASIC CONSTANTS |
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DWAT=0.59 |
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DAIR=0.01462 |
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RHOICE=0.91D+03 |
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RHOAIR=1.3 |
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C 25 DEG GIVES SIN EQUAL TO 0.4226 |
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SINWIN=0.4226 |
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COSWIN=0.9063 |
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SINWAT=0.4226 |
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COSWAT=0.9063 |
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c do not introduce truning angle |
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SINWIN=0.0 |
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COSWIN=1.0 |
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SINWAT=0.0 |
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COSWAT=1.0 |
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|
| 71 |
GRAV=9.832 |
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|
| 73 |
ECCEN=2.0 |
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ECM2=1.0/(ECCEN**2) |
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GMIN=1.0D-20 |
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RADIUS=6370.E3 |
| 77 |
|
| 78 |
PSTAR=SEAICE_strength |
| 79 |
|
| 80 |
DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
| 82 |
DO j=1,sNy |
| 83 |
DO i=1,sNx |
| 84 |
|
| 85 |
C NOW SET UP MASS PER UNIT AREA AND CORIOLIS TERM |
| 86 |
AMASS(I,J,bi,bj)=RHOICE*0.25*(HEFF(i,j,1,bi,bj) |
| 87 |
& +HEFF(i+1,j,1,bi,bj) |
| 88 |
& +HEFF(i,j+1,1,bi,bj) |
| 89 |
& +HEFF(i+1,j+1,1,bi,bj)) |
| 90 |
COR_ICE(I,J,bi,bj)=AMASS(I,J,bi,bj) |
| 91 |
& *2.0*OMEGA*SINEICE(I,J,bi,bj) |
| 92 |
C NOW SET UP FORCING FIELD |
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C FIRST WIND |
| 94 |
C IF WIND ON B GRID |
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AAA=SQRT(GAIRX(I,J,bi,bj)**2+GAIRY(I,J,bi,bj)**2) |
| 96 |
C IF WIND ON C GRID |
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C AAA=SQRT((0.5*(GAIRX(I+1,J,bi,bj)+GAIRX(I+1,J+1,bi,bj)))**2 |
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C & +(0.5*(GAIRY(I,J+1,bi,bj)+GAIRY(I+1,J+1,bi,bj)))**2) |
| 99 |
|
| 100 |
DAIRN(I,J,bi,bj)=RHOAIR*SEAICE_drag* |
| 101 |
& (2.70+0.142*AAA+0.0764*AAA*AAA) |
| 102 |
|
| 103 |
C IF WIND ON B GRID |
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FORCEX(I,J,bi,bj)=DAIRN(I,J,bi,bj)*(COSWIN*GAIRX(I,J,bi,bj) |
| 105 |
& -SINWIN*GAIRY(I,J,bi,bj)) |
| 106 |
FORCEY(I,J,bi,bj)=DAIRN(I,J,bi,bj)*(SINWIN*GAIRX(I,J,bi,bj) |
| 107 |
& +COSWIN*GAIRY(I,J,bi,bj)) |
| 108 |
C IF WIND ON C GRID |
| 109 |
C FORCEX(I,J,bi,bj)=DAIRN(I,J,bi,bj)* |
| 110 |
C & (COSWIN*0.5*(GAIRX(I+1,J,bi,bj)+GAIRX(I+1,J+1,bi,bj)) |
| 111 |
C & -SINWIN*0.5*(GAIRY(I,J+1,bi,bj)+GAIRY(I+1,J+1,bi,bj))) |
| 112 |
C FORCEY(I,J,bi,bj)=DAIRN(I,J,bi,bj)* |
| 113 |
C & (SINWIN*0.5*(GAIRX(I+1,J,bi,bj)+GAIRX(I+1,J+1,bi,bj)) |
| 114 |
C & +COSWIN*0.5*(GAIRY(I,J+1,bi,bj)+GAIRY(I+1,J+1,bi,bj))) |
| 115 |
|
| 116 |
C STORE WIND ONLY STRESS |
| 117 |
WINDX(I,J,bi,bj)=FORCEX(I,J,bi,bj) |
| 118 |
WINDY(I,J,bi,bj)=FORCEY(I,J,bi,bj) |
| 119 |
|
| 120 |
C NOW ADD IN TILT |
| 121 |
FORCEX(I,J,bi,bj)=FORCEX(I,J,bi,bj) |
| 122 |
& -COR_ICE(I,J,bi,bj)*GWATY(I,J,bi,bj) |
| 123 |
FORCEY(I,J,bi,bj)=FORCEY(I,J,bi,bj) |
| 124 |
& +COR_ICE(I,J,bi,bj)*GWATX(I,J,bi,bj) |
| 125 |
C NOW SET UP ICE PRESSURE AND VISCOSITIES |
| 126 |
PRESS(I,J,bi,bj)=PSTAR*HEFF(I,J,1,bi,bj) |
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& *EXP(-20.0*(1.0-AREA(I,J,1,bi,bj))) |
| 128 |
ZMAX(I,J,bi,bj)=(5.0D+12/(2.0D+04))*PRESS(I,J,bi,bj) |
| 129 |
ZMIN(I,J,bi,bj)=4.0E+08 |
| 130 |
PRESS(I,J,bi,bj)=PRESS(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
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ENDDO |
| 132 |
ENDDO |
| 133 |
ENDDO |
| 134 |
ENDDO |
| 135 |
|
| 136 |
#ifdef SEAICE_ALLOW_DYNAMICS |
| 137 |
IF ( SEAICEuseDYNAMICS ) THEN |
| 138 |
|
| 139 |
C-- Update overlap regions for PRESS |
| 140 |
_EXCH_XY_R8(PRESS, myThid) |
| 141 |
|
| 142 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 143 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1,sNy |
| 145 |
DO i=1,sNx |
| 146 |
C NOW CALCULATE PRESSURE FORCE AND ADD TO EXTERNAL FORCE |
| 147 |
FORCEX(I,J,bi,bj)=FORCEX(I,J,bi,bj) |
| 148 |
& -(0.25/(DXUICE(I,J,bi,bj)*CSUICE(I,J,bi,bj))) |
| 149 |
& *(PRESS(I+1,J,bi,bj)+PRESS(I+1,J+1,bi,bj) |
| 150 |
& -PRESS(I,J,bi,bj)-PRESS(I,J+1,bi,bj)) |
| 151 |
FORCEY(I,J,bi,bj)=FORCEY(I,J,bi,bj)-0.25/DYUICE(I,J,bi,bj) |
| 152 |
& *(PRESS(I,J+1,bi,bj)+PRESS(I+1,J+1,bi,bj) |
| 153 |
& -PRESS(I,J,bi,bj)-PRESS(I+1,J,bi,bj)) |
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C NOW KEEP FORCEX0 |
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FORCEX0(I,J,bi,bj)=FORCEX(I,J,bi,bj) |
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FORCEY0(I,J,bi,bj)=FORCEY(I,J,bi,bj) |
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ENDDO |
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ENDDO |
| 159 |
ENDDO |
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ENDDO |
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|
| 162 |
C DO PSEUDO-TIMESTEPS TO OBTAIN AN ACCURATE VISCOUS-PLASTIC SOLUTION |
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C 10 PSEUDO-TIMESTEPS OR MORE ARE SUGGESTED FOR HIGH-RESOLUTION (~10KM) |
| 164 |
C 1 PSEUDO-TIMESTEP CAN BE USED FOR LOW-RESOLUTION GLOBAL MODELING |
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C NPSEUDO is now set in data.seaice input file |
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C TIMESTEP FOR PSEUDO-TIMESTEPPING |
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DELTAT=DELTAT/NPSEUDO |
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DO 5000 KII=1,NPSEUDO |
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|
| 170 |
C NOW DO PREDICTOR TIME STEP |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
| 174 |
DO i=1-OLx,sNx+OLx |
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UICE(I,J,2,bi,bj)=UICE(I,J,1,bi,bj) |
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VICE(I,J,2,bi,bj)=VICE(I,J,1,bi,bj) |
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UICEC(I,J,bi,bj)=UICE(I,J,1,bi,bj) |
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VICEC(I,J,bi,bj)=VICE(I,J,1,bi,bj) |
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ENDDO |
| 180 |
ENDDO |
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ENDDO |
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ENDDO |
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|
| 184 |
DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1,sNy |
| 187 |
DO i=1,sNx |
| 188 |
C NOW SET UP NON-LINEAR WATER DRAG |
| 189 |
DWATN(I,J,bi,bj)=SEAICE_waterDrag*SQRT((UICE(I,J,1,bi,bj) |
| 190 |
& -GWATX(I,J,bi,bj))**2 |
| 191 |
& +(VICE(I,J,1,bi,bj)-GWATY(I,J,bi,bj))**2) |
| 192 |
DWATN(I,J,bi,bj)=MAX(DWATN(I,J,bi,bj),0.25 d 0) |
| 193 |
C NOW SET UP SYMMETTRIC DRAG |
| 194 |
DRAGS(I,J,bi,bj)=DWATN(I,J,bi,bj)*COSWAT |
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C NOW SET UP ANTI SYMMETTRIC DRAG PLUS CORIOLIS |
| 196 |
DRAGA(I,J,bi,bj)=DWATN(I,J,bi,bj)*SINWAT+COR_ICE(I,J,bi,bj) |
| 197 |
C NOW ADD IN CURRENT FORCE |
| 198 |
FORCEX(I,J,bi,bj)=FORCEX0(I,J,bi,bj)+DWATN(I,J,bi,bj) |
| 199 |
& *(COSWAT*GWATX(I,J,bi,bj) |
| 200 |
& -SINWAT*GWATY(I,J,bi,bj)) |
| 201 |
FORCEY(I,J,bi,bj)=FORCEY0(I,J,bi,bj)+DWATN(I,J,bi,bj) |
| 202 |
& *(SINWAT*GWATX(I,J,bi,bj) |
| 203 |
& +COSWAT*GWATY(I,J,bi,bj)) |
| 204 |
ENDDO |
| 205 |
ENDDO |
| 206 |
ENDDO |
| 207 |
ENDDO |
| 208 |
|
| 209 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 210 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 211 |
DO j=1,sNy |
| 212 |
DO i=1,sNx |
| 213 |
C NOW EVALUATE STRAIN RATES |
| 214 |
E11(I,J,bi,bj)=0.5/(DXTICE(I,J,bi,bj)*CSTICE(I,J,bi,bj)) |
| 215 |
& *(UICE(I,J,1,bi,bj)+UICE(I,J-1,1,bi,bj) |
| 216 |
& -UICE(I-1,J,1,bi,bj)-UICE(I-1,J-1,1,bi,bj)) |
| 217 |
& -0.25*(VICE(I,J,1,bi,bj)+VICE(I-1,J,1,bi,bj) |
| 218 |
& +VICE(I-1,J-1,1,bi,bj)+VICE(I,J-1,1,bi,bj)) |
| 219 |
& *TNGTICE(I,J,bi,bj)/RADIUS |
| 220 |
E22(I,J,bi,bj)=0.5/DYTICE(I,J,bi,bj) |
| 221 |
& *(VICE(I,J,1,bi,bj)+VICE(I-1,J,1,bi,bj) |
| 222 |
& -VICE(I,J-1,1,bi,bj)-VICE(I-1,J-1,1,bi,bj)) |
| 223 |
E12(I,J,bi,bj)=0.5*(0.5/DYTICE(I,J,bi,bj) |
| 224 |
& *(UICE(I,J,1,bi,bj)+UICE(I-1,J,1,bi,bj) |
| 225 |
& -UICE(I,J-1,1,bi,bj)-UICE(I-1,J-1,1,bi,bj)) |
| 226 |
& +0.5/(DXTICE(I,J,bi,bj)*CSTICE(I,J,bi,bj)) |
| 227 |
& *(VICE(I,J,1,bi,bj)+VICE(I,J-1,1,bi,bj) |
| 228 |
& -VICE(I-1,J,1,bi,bj)-VICE(I-1,J-1,1,bi,bj)) |
| 229 |
& +0.25*(UICE(I,J,1,bi,bj)+UICE(I-1,J,1,bi,bj) |
| 230 |
& +UICE(I-1,J-1,1,bi,bj)+UICE(I,J-1,1,bi,bj)) |
| 231 |
& *TNGTICE(I,J,bi,bj)/RADIUS) |
| 232 |
C NOW EVALUATE VISCOSITIES |
| 233 |
DELT1=(E11(I,J,bi,bj)**2+E22(I,J,bi,bj)**2)*(1.0+ECM2) |
| 234 |
& +4.0*ECM2*E12(I,J,bi,bj)**2 |
| 235 |
1 +2.0*E11(I,J,bi,bj)*E22(I,J,bi,bj)*(1.0-ECM2) |
| 236 |
DELT2=SQRT(DELT1) |
| 237 |
DELT2=MAX(GMIN,DELT2) |
| 238 |
ZETA(I,J,bi,bj)=0.5*PRESS(I,J,bi,bj)/DELT2 |
| 239 |
C NOW PUT MIN AND MAX VISCOSITIES IN |
| 240 |
ZETA(I,J,bi,bj)=MIN(ZMAX(I,J,bi,bj),ZETA(I,J,bi,bj)) |
| 241 |
ZETA(I,J,bi,bj)=MAX(ZMIN(I,J,bi,bj),ZETA(I,J,bi,bj)) |
| 242 |
C NOW SET VISCOSITIES TO ZERO AT HEFFMFLOW PTS |
| 243 |
ZETA(I,J,bi,bj)=ZETA(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 244 |
ETA(I,J,bi,bj)=ECM2*ZETA(I,J,bi,bj) |
| 245 |
ENDDO |
| 246 |
ENDDO |
| 247 |
ENDDO |
| 248 |
ENDDO |
| 249 |
|
| 250 |
C-- Update overlap regions |
| 251 |
_EXCH_XY_R8(ETA, myThid) |
| 252 |
_EXCH_XY_R8(ZETA, myThid) |
| 253 |
|
| 254 |
C NOW ADI SCHEME (ZHANG-J/ROTHROCK 1999,bi,bj) |
| 255 |
IF ( SEAICEuseLSR ) THEN |
| 256 |
CALL LSR( myThid ) |
| 257 |
ELSE |
| 258 |
CALL ADI( myThid ) |
| 259 |
ENDIF |
| 260 |
|
| 261 |
C NOW DO MODIFIED EULER STEP |
| 262 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 263 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 264 |
DO j=1-OLy,sNy+OLy |
| 265 |
DO i=1-OLx,sNx+OLx |
| 266 |
UICE(I,J,1,bi,bj)=0.5*(UICE(I,J,1,bi,bj)+UICE(I,J,2,bi,bj)) |
| 267 |
VICE(I,J,1,bi,bj)=0.5*(VICE(I,J,1,bi,bj)+VICE(I,J,2,bi,bj)) |
| 268 |
UICEC(I,J,bi,bj)=UICE(I,J,1,bi,bj) |
| 269 |
VICEC(I,J,bi,bj)=VICE(I,J,1,bi,bj) |
| 270 |
ENDDO |
| 271 |
ENDDO |
| 272 |
ENDDO |
| 273 |
ENDDO |
| 274 |
|
| 275 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 276 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 277 |
DO j=1,sNy |
| 278 |
DO i=1,sNx |
| 279 |
C NOW SET UP NON-LINEAR WATER DRAG |
| 280 |
DWATN(I,J,bi,bj)=SEAICE_waterDrag*SQRT((UICE(I,J,1,bi,bj) |
| 281 |
& -GWATX(I,J,bi,bj))**2 |
| 282 |
& +(VICE(I,J,1,bi,bj)-GWATY(I,J,bi,bj))**2) |
| 283 |
DWATN(I,J,bi,bj)=MAX(DWATN(I,J,bi,bj),0.25 d 0) |
| 284 |
C NOW SET UP SYMMETTRIC DRAG |
| 285 |
DRAGS(I,J,bi,bj)=DWATN(I,J,bi,bj)*COSWAT |
| 286 |
C NOW SET UP ANTI SYMMETTRIC DRAG PLUS CORIOLIS |
| 287 |
DRAGA(I,J,bi,bj)=DWATN(I,J,bi,bj)*SINWAT+COR_ICE(I,J,bi,bj) |
| 288 |
C NOW ADD IN CURRENT FORCE |
| 289 |
FORCEX(I,J,bi,bj)=FORCEX0(I,J,bi,bj)+DWATN(I,J,bi,bj) |
| 290 |
& *(COSWAT*GWATX(I,J,bi,bj) |
| 291 |
& -SINWAT*GWATY(I,J,bi,bj)) |
| 292 |
FORCEY(I,J,bi,bj)=FORCEY0(I,J,bi,bj)+DWATN(I,J,bi,bj) |
| 293 |
& *(SINWAT*GWATX(I,J,bi,bj) |
| 294 |
& +COSWAT*GWATY(I,J,bi,bj)) |
| 295 |
ENDDO |
| 296 |
ENDDO |
| 297 |
ENDDO |
| 298 |
ENDDO |
| 299 |
|
| 300 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 301 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 302 |
DO j=1,sNy |
| 303 |
DO i=1,sNx |
| 304 |
C NOW EVALUATE STRAIN RATES |
| 305 |
E11(I,J,bi,bj)=0.5/(DXTICE(I,J,bi,bj)*CSTICE(I,J,bi,bj)) |
| 306 |
& *(UICE(I,J,1,bi,bj)+UICE(I,J-1,1,bi,bj) |
| 307 |
& -UICE(I-1,J,1,bi,bj)-UICE(I-1,J-1,1,bi,bj)) |
| 308 |
& -0.25*(VICE(I,J,1,bi,bj)+VICE(I-1,J,1,bi,bj) |
| 309 |
& +VICE(I-1,J-1,1,bi,bj)+VICE(I,J-1,1,bi,bj)) |
| 310 |
& *TNGTICE(I,J,bi,bj)/RADIUS |
| 311 |
E22(I,J,bi,bj)=0.5/DYTICE(I,J,bi,bj) |
| 312 |
& *(VICE(I,J,1,bi,bj)+VICE(I-1,J,1,bi,bj) |
| 313 |
& -VICE(I,J-1,1,bi,bj)-VICE(I-1,J-1,1,bi,bj)) |
| 314 |
E12(I,J,bi,bj)=0.5*(0.5/DYTICE(I,J,bi,bj) |
| 315 |
& *(UICE(I,J,1,bi,bj)+UICE(I-1,J,1,bi,bj) |
| 316 |
& -UICE(I,J-1,1,bi,bj)-UICE(I-1,J-1,1,bi,bj)) |
| 317 |
& +0.5/(DXTICE(I,J,bi,bj)*CSTICE(I,J,bi,bj)) |
| 318 |
& *(VICE(I,J,1,bi,bj)+VICE(I,J-1,1,bi,bj) |
| 319 |
& -VICE(I-1,J,1,bi,bj)-VICE(I-1,J-1,1,bi,bj)) |
| 320 |
& +0.25*(UICE(I,J,1,bi,bj)+UICE(I-1,J,1,bi,bj) |
| 321 |
& +UICE(I-1,J-1,1,bi,bj)+UICE(I,J-1,1,bi,bj)) |
| 322 |
& *TNGTICE(I,J,bi,bj)/RADIUS) |
| 323 |
C NOW EVALUATE VISCOSITIES |
| 324 |
DELT1=(E11(I,J,bi,bj)**2+E22(I,J,bi,bj)**2)*(1.0+ECM2) |
| 325 |
& +4.0*ECM2*E12(I,J,bi,bj)**2 |
| 326 |
1 +2.0*E11(I,J,bi,bj)*E22(I,J,bi,bj)*(1.0-ECM2) |
| 327 |
DELT2=SQRT(DELT1) |
| 328 |
DELT2=MAX(GMIN,DELT2) |
| 329 |
ZETA(I,J,bi,bj)=0.5*PRESS(I,J,bi,bj)/DELT2 |
| 330 |
C NOW PUT MIN AND MAX VISCOSITIES IN |
| 331 |
ZETA(I,J,bi,bj)=MIN(ZMAX(I,J,bi,bj),ZETA(I,J,bi,bj)) |
| 332 |
ZETA(I,J,bi,bj)=MAX(ZMIN(I,J,bi,bj),ZETA(I,J,bi,bj)) |
| 333 |
C NOW SET VISCOSITIES TO ZERO AT HEFFMFLOW PTS |
| 334 |
ZETA(I,J,bi,bj)=ZETA(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 335 |
ETA(I,J,bi,bj)=ECM2*ZETA(I,J,bi,bj) |
| 336 |
ENDDO |
| 337 |
ENDDO |
| 338 |
ENDDO |
| 339 |
ENDDO |
| 340 |
|
| 341 |
C-- Update overlap regions |
| 342 |
_EXCH_XY_R8(ETA, myThid) |
| 343 |
_EXCH_XY_R8(ZETA, myThid) |
| 344 |
|
| 345 |
C GET READY FOR SECOND CALL OF ADI |
| 346 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 347 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 348 |
DO j=1-OLy,sNy+OLy |
| 349 |
DO i=1-OLx,sNx+OLx |
| 350 |
UICE(I,J,2,bi,bj)=UICEC(I,J,bi,bj) |
| 351 |
VICE(I,J,2,bi,bj)=VICEC(I,J,bi,bj) |
| 352 |
ENDDO |
| 353 |
ENDDO |
| 354 |
ENDDO |
| 355 |
ENDDO |
| 356 |
|
| 357 |
C NOW ADI SCHEME (ZHANG-J/ROTHROCK 1999) |
| 358 |
IF ( SEAICEuseLSR ) THEN |
| 359 |
CALL LSR( myThid ) |
| 360 |
ELSE |
| 361 |
CALL ADI( myThid ) |
| 362 |
ENDIF |
| 363 |
|
| 364 |
5000 CONTINUE |
| 365 |
|
| 366 |
ENDIF |
| 367 |
#endif SEAICE_ALLOW_DYNAMICS |
| 368 |
|
| 369 |
C Calculate ocean surface stress |
| 370 |
CALL OSTRES ( DWATN, COR_ICE, myThid ) |
| 371 |
|
| 372 |
#ifdef SEAICE_ALLOW_DYNAMICS |
| 373 |
IF ( SEAICEuseDYNAMICS ) THEN |
| 374 |
|
| 375 |
C NOW BACK TO NORMAL TIMESTEP |
| 376 |
DELTAT=DELTAT*NPSEUDO |
| 377 |
|
| 378 |
c Put a cap on ice velocity |
| 379 |
c limit velocity to 0.40 m s-1 to avoid potential CFL violations |
| 380 |
c in open water areas (drift of zero thickness ice) |
| 381 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 382 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 383 |
DO j=1-OLy,sNy+OLy |
| 384 |
DO i=1-OLx,sNx+OLx |
| 385 |
#ifdef SEAICE_DEBUG |
| 386 |
c write(*,'(2i4,2i2,f7.1,7f12.3)') |
| 387 |
c & i,j,bi,bj,UVM(I,J,bi,bj),amass(i,j,bi,bj) |
| 388 |
c & ,gwatx(I,J,bi,bj),gwaty(i,j,bi,bj) |
| 389 |
c & ,forcex(I,J,bi,bj),forcey(i,j,bi,bj) |
| 390 |
c & ,uice(i,j,1,bi,bj) |
| 391 |
c & ,vice(i,j,1,bi,bj) |
| 392 |
#endif SEAICE_DEBUG |
| 393 |
UICE(i,j,1,bi,bj)=min(UICE(i,j,1,bi,bj),0.40D+00) |
| 394 |
VICE(i,j,1,bi,bj)=min(VICE(i,j,1,bi,bj),0.40D+00) |
| 395 |
UICE(i,j,1,bi,bj)=max(UICE(i,j,1,bi,bj),-0.40D+00) |
| 396 |
VICE(i,j,1,bi,bj)=max(VICE(i,j,1,bi,bj),-0.40D+00) |
| 397 |
ENDDO |
| 398 |
ENDDO |
| 399 |
ENDDO |
| 400 |
ENDDO |
| 401 |
|
| 402 |
ENDIF |
| 403 |
#endif SEAICE_ALLOW_DYNAMICS |
| 404 |
|
| 405 |
#endif ALLOW_SEAICE |
| 406 |
|
| 407 |
RETURN |
| 408 |
END |
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