| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_growth.F,v 1.70 2010/09/23 22:46:24 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "SEAICE_OPTIONS.h" |
| 5 |
|
| 6 |
CBOP |
| 7 |
C !ROUTINE: SEAICE_GROWTH |
| 8 |
C !INTERFACE: |
| 9 |
SUBROUTINE SEAICE_GROWTH( myTime, myIter, myThid ) |
| 10 |
C !DESCRIPTION: \bv |
| 11 |
C *==========================================================* |
| 12 |
C | SUBROUTINE seaice_growth |
| 13 |
C | o Updata ice thickness and snow depth |
| 14 |
C *==========================================================* |
| 15 |
C \ev |
| 16 |
|
| 17 |
C !USES: |
| 18 |
IMPLICIT NONE |
| 19 |
C === Global variables === |
| 20 |
#include "SIZE.h" |
| 21 |
#include "EEPARAMS.h" |
| 22 |
#include "PARAMS.h" |
| 23 |
#include "DYNVARS.h" |
| 24 |
#include "GRID.h" |
| 25 |
#include "FFIELDS.h" |
| 26 |
#include "SEAICE_PARAMS.h" |
| 27 |
#include "SEAICE.h" |
| 28 |
#ifdef ALLOW_EXF |
| 29 |
# include "EXF_OPTIONS.h" |
| 30 |
# include "EXF_FIELDS.h" |
| 31 |
# include "EXF_PARAM.h" |
| 32 |
#endif |
| 33 |
#ifdef ALLOW_SALT_PLUME |
| 34 |
# include "SALT_PLUME.h" |
| 35 |
#endif |
| 36 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 37 |
# include "tamc.h" |
| 38 |
#endif |
| 39 |
|
| 40 |
C !INPUT/OUTPUT PARAMETERS: |
| 41 |
C === Routine arguments === |
| 42 |
C myTime :: Simulation time |
| 43 |
C myIter :: Simulation timestep number |
| 44 |
C myThid :: Thread no. that called this routine. |
| 45 |
_RL myTime |
| 46 |
INTEGER myIter, myThid |
| 47 |
CEOP |
| 48 |
|
| 49 |
C !LOCAL VARIABLES: |
| 50 |
C === Local variables === |
| 51 |
C i,j,bi,bj :: Loop counters |
| 52 |
INTEGER i, j, bi, bj |
| 53 |
C number of surface interface layer |
| 54 |
INTEGER kSurface |
| 55 |
C constants |
| 56 |
_RL TBC, SDF, ICE2SNOW |
| 57 |
_RL QI, recip_QI, QS |
| 58 |
C auxillary variables |
| 59 |
_RL snowEnergy |
| 60 |
_RL growthHEFF, growthNeg |
| 61 |
#ifdef ALLOW_SEAICE_FLOODING |
| 62 |
_RL hDraft |
| 63 |
#endif /* ALLOW_SEAICE_FLOODING */ |
| 64 |
_RL GHEFF (1:sNx,1:sNy) |
| 65 |
|
| 66 |
#ifdef SEAICE_SALINITY |
| 67 |
_RL saltFluxAdjust(1:sNx,1:sNy) |
| 68 |
#endif |
| 69 |
|
| 70 |
cgf new variables: |
| 71 |
_RL d_HSNWbyATMonSNW (1:sNx,1:sNy) |
| 72 |
_RL d_HFRWbyATMonSNW (1:sNx,1:sNy) |
| 73 |
_RL d_QbyATMonSNW (1:sNx,1:sNy) |
| 74 |
c |
| 75 |
_RL d_AREAbyATM (1:sNx,1:sNy) |
| 76 |
c |
| 77 |
_RL tmpscal1, tmpscal2, tmpscal3, tmpscal4 |
| 78 |
c |
| 79 |
_RL a_QbyICE (1:sNx,1:sNy) |
| 80 |
_RL r_QbyICE (1:sNx,1:sNy) |
| 81 |
_RL d_QbyICE (1:sNx,1:sNy) |
| 82 |
_RL d_QbySNW (1:sNx,1:sNy) |
| 83 |
_RL d_HEFFbyICEonOCN (1:sNx,1:sNy) |
| 84 |
_RL d_HEFFbySNWonOCN (1:sNx,1:sNy) |
| 85 |
|
| 86 |
|
| 87 |
|
| 88 |
C a_QbyATM_cover - thermodynamic ice growth rate over sea ice in W/m^2 |
| 89 |
C >0 causes ice growth, <0 causes snow and sea ice melt |
| 90 |
C a_QbyATM - effective thermodynamic ice growth rate over sea ice in W/m^2 |
| 91 |
C >0 causes ice growth, <0 causes snow and sea ice melt |
| 92 |
C a_QbyATM_open - thermodynamic ice growth rate over open water in W/m^2 |
| 93 |
C ( = surface heat flux ) |
| 94 |
C >0 causes ice growth, <0 causes snow and sea ice melt |
| 95 |
C QNETI - net surface heat flux under ice in W/m^2 |
| 96 |
C a_QSWbyATM_open - short wave heat flux over ocean in W/m^2 |
| 97 |
C a_QSWbyATM_cover - short wave heat flux under ice in W/m^2 |
| 98 |
_RL a_QbyATM (1:sNx,1:sNy) |
| 99 |
_RL a_QbyATM_cover (1:sNx,1:sNy) |
| 100 |
_RL a_QbyATM_open (1:sNx,1:sNy) |
| 101 |
_RL QNETI (1:sNx,1:sNy) |
| 102 |
_RL a_QSWbyATM_open (1:sNx,1:sNy) |
| 103 |
_RL a_QSWbyATM_cover (1:sNx,1:sNy) |
| 104 |
C |
| 105 |
C actual ice thickness with upper and lower limit |
| 106 |
_RL HICE (1:sNx,1:sNy) |
| 107 |
C actual snow thickness |
| 108 |
_RL hSnwLoc (1:sNx,1:sNy) |
| 109 |
C wind speed |
| 110 |
_RL UG (1:sNx,1:sNy) |
| 111 |
_RL SPEED_SQ |
| 112 |
C local copy of AREA |
| 113 |
_RL areaLoc |
| 114 |
|
| 115 |
#ifdef SEAICE_MULTICATEGORY |
| 116 |
INTEGER it |
| 117 |
INTEGER ilockey |
| 118 |
_RL RK |
| 119 |
_RL HICEP (1:sNx,1:sNy) |
| 120 |
_RL a_QbyATMmult_cover (1:sNx,1:sNy) |
| 121 |
_RL a_QSWbyATMmult_cover (1:sNx,1:sNy) |
| 122 |
#endif |
| 123 |
|
| 124 |
#ifdef SEAICE_AGE |
| 125 |
C old_AREA :: hold sea-ice fraction field before any seaice-thermo update |
| 126 |
_RL old_AREA (1:sNx,1:sNy) |
| 127 |
# ifdef SEAICE_AGE_VOL |
| 128 |
C old_HEFF :: hold sea-ice effective thicness field before any seaice-thermo update |
| 129 |
_RL old_HEFF (1:sNx,1:sNy) |
| 130 |
_RL age_actual |
| 131 |
# endif /* SEAICE_AGE_VOL */ |
| 132 |
#endif /* SEAICE_AGE */ |
| 133 |
|
| 134 |
#ifdef ALLOW_DIAGNOSTICS |
| 135 |
_RL DIAGarray (1:sNx,1:sNy) |
| 136 |
LOGICAL DIAGNOSTICS_IS_ON |
| 137 |
EXTERNAL DIAGNOSTICS_IS_ON |
| 138 |
#endif |
| 139 |
|
| 140 |
IF ( buoyancyRelation .EQ. 'OCEANICP' ) THEN |
| 141 |
kSurface = Nr |
| 142 |
ELSE |
| 143 |
kSurface = 1 |
| 144 |
ENDIF |
| 145 |
|
| 146 |
C FREEZING TEMP. OF SEA WATER (deg C) |
| 147 |
TBC = SEAICE_freeze |
| 148 |
C RATIO OF WATER DESITY TO SNOW DENSITY |
| 149 |
SDF = 1000.0 _d 0/SEAICE_rhoSnow |
| 150 |
C RATIO OF SEA ICE DENSITY to SNOW DENSITY |
| 151 |
ICE2SNOW = SDF * ICE2WATR |
| 152 |
C HEAT OF FUSION OF ICE (J/m^3) |
| 153 |
QI = 302.0 _d +06 |
| 154 |
recip_QI = 1.0 _d 0 / QI |
| 155 |
C HEAT OF FUSION OF SNOW (J/m^3) |
| 156 |
QS = 1.1 _d +08 |
| 157 |
|
| 158 |
|
| 159 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 160 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 161 |
c |
| 162 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 163 |
act1 = bi - myBxLo(myThid) |
| 164 |
max1 = myBxHi(myThid) - myBxLo(myThid) + 1 |
| 165 |
act2 = bj - myByLo(myThid) |
| 166 |
max2 = myByHi(myThid) - myByLo(myThid) + 1 |
| 167 |
act3 = myThid - 1 |
| 168 |
max3 = nTx*nTy |
| 169 |
act4 = ikey_dynamics - 1 |
| 170 |
iicekey = (act1 + 1) + act2*max1 |
| 171 |
& + act3*max1*max2 |
| 172 |
& + act4*max1*max2*max3 |
| 173 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 174 |
C |
| 175 |
C initialise a few fields |
| 176 |
C |
| 177 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 178 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 179 |
CADJ & key = iicekey, byte = isbyte |
| 180 |
CADJ STORE qnet(:,:,bi,bj) = comlev1_bibj, |
| 181 |
CADJ & key = iicekey, byte = isbyte |
| 182 |
CADJ STORE qsw(:,:,bi,bj) = comlev1_bibj, |
| 183 |
CADJ & key = iicekey, byte = isbyte |
| 184 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 185 |
DO J=1,sNy |
| 186 |
DO I=1,sNx |
| 187 |
a_QbyATM(I,J) = 0.0 _d 0 |
| 188 |
a_QbyATM_cover (I,J) = 0.0 _d 0 |
| 189 |
a_QbyATM_open(I,J) = 0.0 _d 0 |
| 190 |
QNETI(I,J) = 0.0 _d 0 |
| 191 |
a_QSWbyATM_open (I,J) = 0.0 _d 0 |
| 192 |
a_QSWbyATM_cover (I,J) = 0.0 _d 0 |
| 193 |
#ifdef SEAICE_SALINITY |
| 194 |
saltFluxAdjust(I,J) = 0.0 _d 0 |
| 195 |
#endif |
| 196 |
#ifdef SEAICE_MULTICATEGORY |
| 197 |
a_QbyATMmult_cover(I,J) = 0.0 _d 0 |
| 198 |
a_QSWbyATMmult_cover(I,J) = 0.0 _d 0 |
| 199 |
#endif |
| 200 |
cgf new variables: |
| 201 |
d_HSNWbyATMonSNW(I,J) = 0.0 _d 0 |
| 202 |
d_HFRWbyATMonSNW(I,J) = 0.0 _d 0 |
| 203 |
d_QbyATMonSNW(I,J) = 0.0 _d 0 |
| 204 |
c |
| 205 |
d_AREAbyATM(I,J) = 0.0 _d 0 |
| 206 |
c |
| 207 |
d_HEFFbyICEonOCN(I,J) = 0.0 _d 0 |
| 208 |
d_HEFFbySNWonOCN(I,J) = 0.0 _d 0 |
| 209 |
ENDDO |
| 210 |
ENDDO |
| 211 |
DO J=1-oLy,sNy+oLy |
| 212 |
DO I=1-oLx,sNx+oLx |
| 213 |
saltWtrIce(I,J,bi,bj) = 0.0 _d 0 |
| 214 |
frWtrIce(I,J,bi,bj) = 0.0 _d 0 |
| 215 |
#ifdef ALLOW_MEAN_SFLUX_COST_CONTRIBUTION |
| 216 |
frWtrAtm(I,J,bi,bj) = 0.0 _d 0 |
| 217 |
#endif |
| 218 |
ENDDO |
| 219 |
ENDDO |
| 220 |
|
| 221 |
#ifdef SEAICE_AGE |
| 222 |
C store the initial ice fraction over the domain |
| 223 |
DO J=1,sNy |
| 224 |
DO I=1,sNx |
| 225 |
old_AREA(i,j) = AREA(I,J,bi,bj) |
| 226 |
# ifdef SEAICE_AGE_VOL |
| 227 |
old_HEFF(i,j) = HEFF(I,J,bi,bj) |
| 228 |
# endif |
| 229 |
ENDDO |
| 230 |
ENDDO |
| 231 |
#endif /* SEAICE_AGE */ |
| 232 |
|
| 233 |
|
| 234 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 235 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, |
| 236 |
CADJ & key = iicekey, byte = isbyte |
| 237 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, |
| 238 |
CADJ & key = iicekey, byte = isbyte |
| 239 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 240 |
DO J=1,sNy |
| 241 |
DO I=1,sNx |
| 242 |
C COMPUTE ACTUAL ICE THICKNESS AND PUT MINIMUM/MAXIMUM |
| 243 |
C ON ICE THICKNESS FOR BUDGET COMPUTATION |
| 244 |
C The default of A22 = 0.15 is a common threshold for defining |
| 245 |
C the ice edge. This ice concentration usually does not occur |
| 246 |
C due to thermodynamics but due to advection. |
| 247 |
areaLoc = MAX(A22,AREANm1(I,J,bi,bj)) |
| 248 |
HICE(I,J) = HEFFNm1(I,J,bi,bj)/areaLoc |
| 249 |
C Do we know what this is for? |
| 250 |
HICE(I,J) = MAX(HICE(I,J),0.05 _d +00) |
| 251 |
C Capping the actual ice thickness effectively enforces a |
| 252 |
C minimum of heat flux through the ice and helps getting rid of |
| 253 |
C very thick ice. |
| 254 |
cdm actually, this does exactly the opposite, i.e., ice is thicker |
| 255 |
cdm when HICE is capped, so I am commenting out |
| 256 |
cdm HICE(I,J) = MIN(HICE(I,J),9.0 _d +00) |
| 257 |
hSnwLoc(I,J) = HSNOW(I,J,bi,bj)/areaLoc |
| 258 |
ENDDO |
| 259 |
ENDDO |
| 260 |
|
| 261 |
C NOW DETERMINE MIXED LAYER TEMPERATURE |
| 262 |
DO J=1,sNy |
| 263 |
DO I=1,sNx |
| 264 |
TMIX(I,J,bi,bj)=theta(I,J,kSurface,bi,bj)+273.16 _d +00 |
| 265 |
#ifdef SEAICE_DEBUG |
| 266 |
TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00) |
| 267 |
#endif |
| 268 |
ENDDO |
| 269 |
ENDDO |
| 270 |
|
| 271 |
C THERMAL WIND OF ATMOSPHERE |
| 272 |
DO J=1,sNy |
| 273 |
DO I=1,sNx |
| 274 |
C copy the wind speed computed in exf_wind.F to UG |
| 275 |
UG(I,J) = MAX(SEAICE_EPS,wspeed(I,J,bi,bj)) |
| 276 |
CML this is the old code, which does the same |
| 277 |
CML SPEED_SQ = UWIND(I,J,bi,bj)**2 + VWIND(I,J,bi,bj)**2 |
| 278 |
CML IF ( SPEED_SQ .LE. SEAICE_EPS_SQ ) THEN |
| 279 |
CML UG(I,J)=SEAICE_EPS |
| 280 |
CML ELSE |
| 281 |
CML UG(I,J)=SQRT(SPEED_SQ) |
| 282 |
CML ENDIF |
| 283 |
ENDDO |
| 284 |
ENDDO |
| 285 |
|
| 286 |
|
| 287 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 288 |
cphCADJ STORE heff = comlev1, key = ikey_dynamics, byte = isbyte |
| 289 |
cphCADJ STORE hsnow = comlev1, key = ikey_dynamics, byte = isbyte |
| 290 |
cphCADJ STORE uwind = comlev1, key = ikey_dynamics, byte = isbyte |
| 291 |
cphCADJ STORE vwind = comlev1, key = ikey_dynamics, byte = isbyte |
| 292 |
c |
| 293 |
CADJ STORE tice = comlev1, key = ikey_dynamics, byte = isbyte |
| 294 |
# ifdef SEAICE_MULTICATEGORY |
| 295 |
CADJ STORE tices = comlev1, key = ikey_dynamics, byte = isbyte |
| 296 |
# endif |
| 297 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 298 |
|
| 299 |
C NOW DETERMINE GROWTH RATES |
| 300 |
C FIRST DO OPEN WATER |
| 301 |
CALL SEAICE_BUDGET_OCEAN( |
| 302 |
I UG, |
| 303 |
U TMIX, |
| 304 |
O a_QbyATM_open, a_QSWbyATM_open, |
| 305 |
I bi, bj, myTime, myIter, myThid ) |
| 306 |
|
| 307 |
C NOW DO ICE |
| 308 |
IF (useRelativeWind) THEN |
| 309 |
C Compute relative wind speed over sea ice. |
| 310 |
DO J=1,sNy |
| 311 |
DO I=1,sNx |
| 312 |
SPEED_SQ = |
| 313 |
& (uWind(I,J,bi,bj) |
| 314 |
& +0.5 _d 0*(uVel(i,j,kSurface,bi,bj) |
| 315 |
& +uVel(i+1,j,kSurface,bi,bj)) |
| 316 |
& -0.5 _d 0*(uice(i,j,bi,bj)+uice(i+1,j,bi,bj)))**2 |
| 317 |
& +(vWind(I,J,bi,bj) |
| 318 |
& +0.5 _d 0*(vVel(i,j,kSurface,bi,bj) |
| 319 |
& +vVel(i,j+1,kSurface,bi,bj)) |
| 320 |
& -0.5 _d 0*(vice(i,j,bi,bj)+vice(i,j+1,bi,bj)))**2 |
| 321 |
IF ( SPEED_SQ .LE. SEAICE_EPS_SQ ) THEN |
| 322 |
UG(I,J)=SEAICE_EPS |
| 323 |
ELSE |
| 324 |
UG(I,J)=SQRT(SPEED_SQ) |
| 325 |
ENDIF |
| 326 |
ENDDO |
| 327 |
ENDDO |
| 328 |
ENDIF |
| 329 |
#ifdef SEAICE_MULTICATEGORY |
| 330 |
C-- Start loop over muli-categories |
| 331 |
DO IT=1,MULTDIM |
| 332 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 333 |
ilockey = (iicekey-1)*MULTDIM + IT |
| 334 |
CADJ STORE tices(:,:,it,bi,bj) = comlev1_multdim, |
| 335 |
CADJ & key = ilockey, byte = isbyte |
| 336 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 337 |
RK=REAL(IT) |
| 338 |
DO J=1,sNy |
| 339 |
DO I=1,sNx |
| 340 |
HICEP(I,J)=(HICE(I,J)/MULTDIM)*((2.0 _d 0*RK)-1.0 _d 0) |
| 341 |
TICE(I,J,bi,bj)=TICES(I,J,IT,bi,bj) |
| 342 |
ENDDO |
| 343 |
ENDDO |
| 344 |
CALL SEAICE_SOLVE4TEMP( |
| 345 |
I UG, HICEP, hSnwLoc, |
| 346 |
U TICE, |
| 347 |
O a_QbyATMmult_cover, a_QSWbyATMmult_cover, |
| 348 |
I bi, bj, myTime, myIter, myThid ) |
| 349 |
DO J=1,sNy |
| 350 |
DO I=1,sNx |
| 351 |
C average surface heat fluxes/growth rates |
| 352 |
a_QbyATM_cover (I,J) = |
| 353 |
& a_QbyATM_cover(I,J) + a_QbyATMmult_cover(I,J)/MULTDIM |
| 354 |
a_QSWbyATM_cover (I,J) = |
| 355 |
& a_QSWbyATM_cover(I,J) + a_QSWbyATMmult_cover(I,J)/MULTDIM |
| 356 |
TICES(I,J,IT,bi,bj) = TICE(I,J,bi,bj) |
| 357 |
ENDDO |
| 358 |
ENDDO |
| 359 |
ENDDO |
| 360 |
C-- End loop over multi-categories |
| 361 |
#else /* SEAICE_MULTICATEGORY */ |
| 362 |
CALL SEAICE_SOLVE4TEMP( |
| 363 |
I UG, HICE, hSnwLoc, |
| 364 |
U TICE, |
| 365 |
O a_QbyATM_cover, a_QSWbyATM_cover, |
| 366 |
I bi, bj, myTime, myIter, myThid ) |
| 367 |
#endif /* SEAICE_MULTICATEGORY */ |
| 368 |
|
| 369 |
#ifdef ALLOW_DIAGNOSTICS |
| 370 |
IF ( useDiagnostics ) THEN |
| 371 |
IF ( DIAGNOSTICS_IS_ON('SIatmQnt',myThid) ) THEN |
| 372 |
DO J=1,sNy |
| 373 |
DO I=1,sNx |
| 374 |
DIAGarray(I,J) = maskC(I,J,kSurface,bi,bj) * ( |
| 375 |
& a_QbyATM_cover(I,J) * areaNm1(I,J,bi,bj) + |
| 376 |
& a_QbyATM_open(I,J) * ( ONE - areaNm1(I,J,bi,bj) ) ) |
| 377 |
ENDDO |
| 378 |
ENDDO |
| 379 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIatmQnt',0,1,3,bi,bj,myThid) |
| 380 |
ENDIF |
| 381 |
ENDIF |
| 382 |
#endif |
| 383 |
|
| 384 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 385 |
CADJ STORE theta(:,:,:,bi,bj) = comlev1_bibj, |
| 386 |
CADJ & key = iicekey, byte = isbyte |
| 387 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, |
| 388 |
CADJ & key = iicekey, byte = isbyte |
| 389 |
#endif |
| 390 |
C |
| 391 |
C-- compute and apply ice growth due to oceanic heat flux from below |
| 392 |
C |
| 393 |
|
| 394 |
c a_QbyICE: available heat that may be extracted by the ICE acting |
| 395 |
c on the OCN surface/mixed layer to bring it back to freezig point |
| 396 |
c (in m, negative out of the ocean -- different convention than a_QbyATM) |
| 397 |
cgf unit change that breaks lab_sea (in W/m2, positive out of the ocean -- same convention as a_QbyATM) |
| 398 |
DO J=1,sNy |
| 399 |
DO I=1,sNx |
| 400 |
IF ( .NOT. inAdMode ) THEN |
| 401 |
#ifdef SEAICE_VARIABLE_FREEZING_POINT |
| 402 |
TBC = -0.0575 _d 0*salt(I,J,kSurface,bi,bj) + 0.0901 _d 0 |
| 403 |
#endif /* SEAICE_VARIABLE_FREEZING_POINT */ |
| 404 |
IF ( theta(I,J,kSurface,bi,bj) .GE. TBC ) THEN |
| 405 |
a_QbyICE(i,j) = SEAICE_availHeatFrac |
| 406 |
& * (theta(I,J,kSurface,bi,bj)-TBC) * dRf(kSurface) |
| 407 |
& * hFacC(i,j,kSurface,bi,bj) / 72.0764 _d 0 |
| 408 |
#ifdef SEAICE_QBYICE_IS_WPERM2 |
| 409 |
cgf using W/m2 as the Q unit changes lab_sea results... |
| 410 |
& * ( - QI / SEAICE_deltaTtherm ) |
| 411 |
#endif |
| 412 |
ELSE |
| 413 |
a_QbyICE(i,j) = SEAICE_availHeatFracFrz |
| 414 |
& * (theta(I,J,kSurface,bi,bj)-TBC) * dRf(kSurface) |
| 415 |
& * hFacC(i,j,kSurface,bi,bj) / 72.0764 _d 0 |
| 416 |
#ifdef SEAICE_QBYICE_IS_WPERM2 |
| 417 |
& * ( - QI / SEAICE_deltaTtherm ) |
| 418 |
#endif |
| 419 |
ENDIF |
| 420 |
ELSE |
| 421 |
a_QbyICE(i,j) = 0. |
| 422 |
ENDIF |
| 423 |
ENDDO |
| 424 |
ENDDO |
| 425 |
|
| 426 |
DO J=1,sNy |
| 427 |
DO I=1,sNx |
| 428 |
tmpscal1=a_QbyICE(i,j) |
| 429 |
#ifdef SEAICE_QBYICE_IS_WPERM2 |
| 430 |
& / ( - QI / SEAICE_deltaTtherm ) |
| 431 |
#endif |
| 432 |
d_HEFFbyICEonOCN(I,J) = |
| 433 |
& MAX(ZERO, HEFF(I,J,bi,bj)-tmpscal1)- HEFF(I,J,bi,bj) |
| 434 |
d_QbyICE(I,J)=-d_HEFFbyICEonOCN(I,J) |
| 435 |
#ifdef SEAICE_QBYICE_IS_WPERM2 |
| 436 |
& * ( - QI / SEAICE_deltaTtherm ) |
| 437 |
#endif |
| 438 |
r_QbyICE(I,J)=a_QbyICE(I,J)-d_QbyICE(I,J) |
| 439 |
c |
| 440 |
HEFF(I,J,bi,bj)=HEFF(I,J,bi,bj) + d_HEFFbyICEonOCN(I,J) |
| 441 |
saltWtrIce(I,J,bi,bj) = saltWtrIce(I,J,bi,bj) |
| 442 |
& + d_HEFFbyICEonOCN(I,J) |
| 443 |
C d_HEFFbyICEonOCN now contains m of ice melted (>0) or created (<0) |
| 444 |
C saltWtrIce contains m of ice melted (<0) or created (>0) |
| 445 |
C r_QbyICE is residual heat above freezing in equivalent m of ice |
| 446 |
ENDDO |
| 447 |
ENDDO |
| 448 |
|
| 449 |
#ifdef ALLOW_DIAGNOSTICS |
| 450 |
IF ( useDiagnostics ) THEN |
| 451 |
IF ( DIAGNOSTICS_IS_ON('SIyneg ',myThid) ) THEN |
| 452 |
CALL DIAGNOSTICS_FILL(d_HEFFbyICEonOCN, |
| 453 |
& 'SIyneg ',0,1,1,bi,bj,myThid) |
| 454 |
ENDIF |
| 455 |
ENDIF |
| 456 |
#endif |
| 457 |
|
| 458 |
cph( |
| 459 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 460 |
cphCADJ STORE heff = comlev1, key = ikey_dynamics, byte = isbyte |
| 461 |
cphCADJ STORE hsnow = comlev1, key = ikey_dynamics, byte = isbyte |
| 462 |
#endif |
| 463 |
cph) |
| 464 |
c |
| 465 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 466 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 467 |
CADJ & key = iicekey, byte = isbyte |
| 468 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, |
| 469 |
CADJ & key = iicekey, byte = isbyte |
| 470 |
CADJ STORE a_QbyATM_cover(:,:) = comlev1_bibj, |
| 471 |
CADJ & key = iicekey, byte = isbyte |
| 472 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 473 |
cph) |
| 474 |
C |
| 475 |
C-- compute and apply ice growth due to atmospheric fluxes from above |
| 476 |
C |
| 477 |
DO J=1,sNy |
| 478 |
DO I=1,sNx |
| 479 |
C NOW CALCULATE CORRECTED effective growth in J/m^2 (>0=melt) |
| 480 |
GHEFF(I,J)=-SEAICE_deltaTtherm* |
| 481 |
& a_QbyATM_cover(I,J)*AREANm1(I,J,bi,bj) |
| 482 |
ENDDO |
| 483 |
ENDDO |
| 484 |
|
| 485 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 486 |
CADJ STORE a_QbyATM_cover(:,:) = comlev1_bibj, |
| 487 |
CADJ & key = iicekey, byte = isbyte |
| 488 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 489 |
|
| 490 |
DO J=1,sNy |
| 491 |
DO I=1,sNx |
| 492 |
IF(a_QbyATM_cover(I,J).LT.ZERO.AND. |
| 493 |
& AREANm1(I,J,bi,bj).GT.ZERO) THEN |
| 494 |
C use a_QbyATM_cover to melt snow and CALCULATE CORRECTED GROWTH |
| 495 |
C effective snow thickness in J/m^2 |
| 496 |
snowEnergy=HSNOW(I,J,bi,bj)*QS |
| 497 |
IF(GHEFF(I,J).LE.snowEnergy) THEN |
| 498 |
C not enough heat to melt all snow; use up all heat flux a_QbyATM_cover |
| 499 |
d_HSNWbyATMonSNW(I,J)=-GHEFF(I,J)/QS |
| 500 |
C SNOW CONVERTED INTO WATER AND THEN INTO equivalent m of ICE melt |
| 501 |
C The factor 1/ICE2SNOW converts m of snow to m of sea-ice |
| 502 |
d_HFRWbyATMonSNW(I,J)= - GHEFF(I,J)/(QS*ICE2SNOW) |
| 503 |
d_QbyATMonSNW(I,J) = -a_QbyATM_cover(I,J) |
| 504 |
ELSE |
| 505 |
C enought heat to melt snow completely; |
| 506 |
C compute remaining heat flux that will melt ice |
| 507 |
d_QbyATMonSNW(I,J)=-(GHEFF(I,J)-snowEnergy)/ |
| 508 |
& SEAICE_deltaTtherm/AREANm1(I,J,bi,bj)-a_QbyATM_cover(I,J) |
| 509 |
C convert all snow to melt water (fresh water flux) |
| 510 |
d_HFRWbyATMonSNW(I,J)=-HSNOW(I,J,bi,bj)/ICE2SNOW |
| 511 |
d_HSNWbyATMonSNW(I,J)=-HSNOW(I,J,bi,bj) |
| 512 |
END IF |
| 513 |
END IF |
| 514 |
frWtrIce(I,J,bi,bj) = frWtrIce(I,J,bi,bj) + |
| 515 |
& d_HFRWbyATMonSNW(I,J) |
| 516 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj) + d_HSNWbyATMonSNW(I,J) |
| 517 |
a_QbyATM_cover(I,J)= a_QbyATM_cover(I,J) + d_QbyATMonSNW(I,J) |
| 518 |
ENDDO |
| 519 |
ENDDO |
| 520 |
|
| 521 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 522 |
CADJ STORE a_QbyATM_cover(:,:) = comlev1_bibj, |
| 523 |
CADJ & key = iicekey, byte = isbyte |
| 524 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 525 |
|
| 526 |
DO J=1,sNy |
| 527 |
DO I=1,sNx |
| 528 |
C now get cell averaged growth rate in W/m^2, >0 causes ice growth |
| 529 |
a_QbyATM(I,J)= a_QbyATM_cover(I,J) * AREANm1(I,J,bi,bj) |
| 530 |
& + a_QbyATM_open(I,J) * (ONE-AREANm1(I,J,bi,bj)) |
| 531 |
ENDDO |
| 532 |
ENDDO |
| 533 |
cph( |
| 534 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 535 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, |
| 536 |
CADJ & key = iicekey, byte = isbyte |
| 537 |
CADJ STORE a_QbyATM_cover(:,:) = comlev1_bibj, |
| 538 |
CADJ & key = iicekey, byte = isbyte |
| 539 |
CADJ STORE a_QbyATM(:,:) = comlev1_bibj, |
| 540 |
CADJ & key = iicekey, byte = isbyte |
| 541 |
CADJ STORE a_QbyATM_open(:,:) = comlev1_bibj, |
| 542 |
CADJ & key = iicekey, byte = isbyte |
| 543 |
CADJ STORE a_QSWbyATM_cover(:,:) = comlev1_bibj, |
| 544 |
CADJ & key = iicekey, byte = isbyte |
| 545 |
CADJ STORE a_QSWbyATM_open(:,:) = comlev1_bibj, |
| 546 |
CADJ & key = iicekey, byte = isbyte |
| 547 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 548 |
cph) |
| 549 |
C |
| 550 |
C First update (freeze or melt) ice area |
| 551 |
C |
| 552 |
DO J=1,sNy |
| 553 |
DO I=1,sNx |
| 554 |
C negative growth in meters of ice (>0 for melting) |
| 555 |
tmpscal1 = -SEAICE_deltaTtherm*a_QbyATM(I,J)*recip_QI |
| 556 |
C negative growth must not exceed effective ice thickness (=volume) |
| 557 |
C (that is, cannot melt more than all the ice) |
| 558 |
tmpscal2 = -ONE*MIN(HEFF(I,J,bi,bj),tmpscal1) |
| 559 |
#ifdef ALLOW_DIAGNOSTICS |
| 560 |
DIAGarray(I,J) = tmpscal2 |
| 561 |
#endif |
| 562 |
C tmpscal2 < 0 means melting |
| 563 |
tmpscal3 = MIN(ZERO,tmpscal2) |
| 564 |
C gain of new effective ice thickness over open water (>0 by definition) |
| 565 |
tmpscal4 = MAX(ZERO,SEAICE_deltaTtherm* |
| 566 |
& a_QbyATM_open(I,J)*recip_QI) |
| 567 |
CML removed these loops and moved TAMC store directive up |
| 568 |
CML ENDDO |
| 569 |
CML ENDDO |
| 570 |
CML#ifdef ALLOW_AUTODIFF_TAMC |
| 571 |
CMLCADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 572 |
CMLCADJ & key = iicekey, byte = isbyte |
| 573 |
CML#endif |
| 574 |
CML DO J=1,sNy |
| 575 |
CML DO I=1,sNx |
| 576 |
C Here we finally compute the new AREA |
| 577 |
IF ( YC(I,J,bi,bj) .LT. ZERO ) THEN |
| 578 |
d_AREAbyATM(I,J)= |
| 579 |
& (ONE-AREANm1(I,J,bi,bj))*tmpscal4/HO_south |
| 580 |
& +HALF*tmpscal3*AREANm1(I,J,bi,bj) |
| 581 |
& /(HEFF(I,J,bi,bj)+.00001 _d 0) |
| 582 |
ELSE |
| 583 |
d_AREAbyATM(I,J)= |
| 584 |
& (ONE-AREANm1(I,J,bi,bj))*tmpscal4/HO |
| 585 |
& +HALF*tmpscal3*AREANm1(I,J,bi,bj) |
| 586 |
& /(HEFF(I,J,bi,bj)+.00001 _d 0) |
| 587 |
ENDIF |
| 588 |
AREA(I,J,bi,bj)=AREA(I,J,bi,bj)+d_AREAbyATM(I,J) |
| 589 |
ENDDO |
| 590 |
ENDDO |
| 591 |
|
| 592 |
#ifdef ALLOW_DIAGNOSTICS |
| 593 |
IF ( useDiagnostics ) THEN |
| 594 |
IF ( DIAGNOSTICS_IS_ON('SIfice ',myThid) ) THEN |
| 595 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIfice ',0,1,3,bi,bj,myThid) |
| 596 |
ENDIF |
| 597 |
ENDIF |
| 598 |
#endif |
| 599 |
|
| 600 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 601 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 602 |
CADJ & key = iicekey, byte = isbyte |
| 603 |
#endif |
| 604 |
C |
| 605 |
C now update (freeze or melt) HEFF |
| 606 |
C |
| 607 |
DO J=1,sNy |
| 608 |
DO I=1,sNx |
| 609 |
C negative growth (>0 for melting) of existing ice in meters |
| 610 |
growthNeg = -SEAICE_deltaTtherm* |
| 611 |
& a_QbyATM_cover(I,J)*recip_QI*AREANm1(I,J,bi,bj) |
| 612 |
C negative growth must not exceed effective ice thickness (=volume) |
| 613 |
C (that is, cannot melt more than all the ice) |
| 614 |
growthHEFF = -ONE*MIN(HEFF(I,J,bi,bj),growthNeg) |
| 615 |
C growthHEFF < 0 means melting |
| 616 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj) + growthHEFF |
| 617 |
C add effective growth to fresh water of ice |
| 618 |
saltWtrIce(I,J,bi,bj) = saltWtrIce(I,J,bi,bj) + growthHEFF |
| 619 |
|
| 620 |
C now calculate QNETI under ice (if any) as the difference between |
| 621 |
C the available "heat flux" growthNeg and the actual growthHEFF; |
| 622 |
C keep in mind that growthNeg and growthHEFF have different signs |
| 623 |
C by construction |
| 624 |
QNETI(I,J) = (growthHEFF + growthNeg)*QI/SEAICE_deltaTtherm |
| 625 |
|
| 626 |
C now update other things |
| 627 |
|
| 628 |
#ifdef ALLOW_ATM_TEMP |
| 629 |
IF(a_QbyATM_cover(I,J).GT.ZERO) THEN |
| 630 |
C freezing, add precip as snow |
| 631 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj)+SEAICE_deltaTtherm* |
| 632 |
& PRECIP(I,J,bi,bj)*AREANm1(I,J,bi,bj)*SDF |
| 633 |
ELSE |
| 634 |
C add precip as rain, water converted into equivalent m of |
| 635 |
C ice by 1/ICE2WATR. |
| 636 |
C Do not get confused by the sign: |
| 637 |
C precip > 0 for downward flux of fresh water |
| 638 |
C frWtrIce > 0 for more ice (corresponds to an upward "fresh water flux"), |
| 639 |
C so that here the rain is added *as if* it is melted ice (which is not |
| 640 |
C true, but just a trick; physically the rain just runs as water |
| 641 |
C through the ice into the ocean) |
| 642 |
frWtrIce(I,J,bi,bj) = frWtrIce(I,J,bi,bj) |
| 643 |
& -PRECIP(I,J,bi,bj)*AREANm1(I,J,bi,bj)* |
| 644 |
& SEAICE_deltaTtherm/ICE2WATR |
| 645 |
ENDIF |
| 646 |
#endif /* ALLOW_ATM_TEMP */ |
| 647 |
|
| 648 |
ENDDO |
| 649 |
ENDDO |
| 650 |
|
| 651 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 652 |
cphCADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, |
| 653 |
cphCADJ & key = iicekey, byte = isbyte |
| 654 |
#endif |
| 655 |
|
| 656 |
cph( very sensitive bit here by JZ |
| 657 |
#ifndef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING |
| 658 |
DO J=1,sNy |
| 659 |
DO I=1,sNx |
| 660 |
C Now melt snow if there is residual heat left in surface level |
| 661 |
C Note that units of d_HEFFbyICEonOCN and frWtrIce are m of ice |
| 662 |
|
| 663 |
tmpscal1=r_QbyICE(i,j) |
| 664 |
#ifdef SEAICE_QBYICE_IS_WPERM2 |
| 665 |
& / ( - QI / SEAICE_deltaTtherm ) |
| 666 |
#endif |
| 667 |
IF( tmpscal1 .GT. ZERO .AND. |
| 668 |
& HSNOW(I,J,bi,bj) .GT. ZERO ) THEN |
| 669 |
d_HEFFbySNWonOCN(I,J) = |
| 670 |
& - MIN( HSNOW(I,J,bi,bj)/SDF/ICE2WATR , tmpscal1 ) |
| 671 |
ELSE |
| 672 |
d_HEFFbySNWonOCN(I,J) = 0. _d 0 |
| 673 |
ENDIF |
| 674 |
d_QbySNW(I,J)=-d_HEFFbySNWonOCN(I,J) |
| 675 |
#ifdef SEAICE_QBYICE_IS_WPERM2 |
| 676 |
& * ( - QI / SEAICE_deltaTtherm ) |
| 677 |
#endif |
| 678 |
r_QbyICE(I,J)=a_QbyICE(I,J)-d_QbySNW(I,J) |
| 679 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj) |
| 680 |
& +d_HEFFbySNWonOCN(I,J)*SDF*ICE2WATR |
| 681 |
frWtrIce(I,J,bi,bj) = frWtrIce(I,J,bi,bj) |
| 682 |
& +d_HEFFbySNWonOCN(I,J) |
| 683 |
ENDDO |
| 684 |
ENDDO |
| 685 |
#endif |
| 686 |
cph) |
| 687 |
|
| 688 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 689 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 690 |
CADJ & key = iicekey, byte = isbyte |
| 691 |
# ifdef SEAICE_SALINITY |
| 692 |
CADJ STORE hsalt(:,:,bi,bj) = comlev1_bibj, |
| 693 |
CADJ & key = iicekey, byte = isbyte |
| 694 |
# endif /* SEAICE_SALINITY */ |
| 695 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 696 |
|
| 697 |
#ifdef ALLOW_ATM_TEMP |
| 698 |
DO J=1,sNy |
| 699 |
DO I=1,sNx |
| 700 |
C NOW GET FRESH WATER FLUX |
| 701 |
EmPmR(I,J,bi,bj) = maskC(I,J,kSurface,bi,bj)*( |
| 702 |
& ( EVAP(I,J,bi,bj)-PRECIP(I,J,bi,bj) ) |
| 703 |
& * ( ONE - AREANm1(I,J,bi,bj) ) |
| 704 |
#ifdef ALLOW_RUNOFF |
| 705 |
& - RUNOFF(I,J,bi,bj) |
| 706 |
#endif |
| 707 |
& + frWtrIce(I,J,bi,bj)*ICE2WATR/SEAICE_deltaTtherm |
| 708 |
& + saltWtrIce(I,J,bi,bj)*ICE2WATR/SEAICE_deltaTtherm |
| 709 |
& )*rhoConstFresh |
| 710 |
ENDDO |
| 711 |
ENDDO |
| 712 |
|
| 713 |
#ifdef ALLOW_DIAGNOSTICS |
| 714 |
IF ( useDiagnostics ) THEN |
| 715 |
IF ( DIAGNOSTICS_IS_ON('SIatmFW ',myThid) ) THEN |
| 716 |
DO J=1,sNy |
| 717 |
DO I=1,sNx |
| 718 |
DIAGarray(I,J) = maskC(I,J,kSurface,bi,bj)*( |
| 719 |
& PRECIP(I,J,bi,bj) |
| 720 |
& - EVAP(I,J,bi,bj) |
| 721 |
& *( ONE - AREANm1(I,J,bi,bj) ) |
| 722 |
& + RUNOFF(I,J,bi,bj) |
| 723 |
& )*rhoConstFresh |
| 724 |
ENDDO |
| 725 |
ENDDO |
| 726 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIatmFW ',0,1,3,bi,bj,myThid) |
| 727 |
ENDIF |
| 728 |
ENDIF |
| 729 |
#endif |
| 730 |
#ifdef ALLOW_MEAN_SFLUX_COST_CONTRIBUTION |
| 731 |
DO J=1,sNy |
| 732 |
DO I=1,sNx |
| 733 |
frWtrAtm(I,J,bi,bj) = maskC(I,J,kSurface,bi,bj)*( |
| 734 |
& PRECIP(I,J,bi,bj) |
| 735 |
& - EVAP(I,J,bi,bj) |
| 736 |
& *( ONE - AREANm1(I,J,bi,bj) ) |
| 737 |
& + RUNOFF(I,J,bi,bj) |
| 738 |
& )*rhoConstFresh |
| 739 |
ENDDO |
| 740 |
ENDDO |
| 741 |
#endif |
| 742 |
|
| 743 |
C COMPUTE SURFACE SALT FLUX AND ADJUST ICE SALINITY |
| 744 |
|
| 745 |
#ifdef SEAICE_SALINITY |
| 746 |
|
| 747 |
DO J=1,sNy |
| 748 |
DO I=1,sNx |
| 749 |
C set HSALT = 0 if HSALT < 0 and compute salt to remove from ocean |
| 750 |
IF ( HSALT(I,J,bi,bj) .LT. 0.0 ) THEN |
| 751 |
saltFluxAdjust(I,J) = - HEFFM(I,J,bi,bj) * |
| 752 |
& HSALT(I,J,bi,bj) / SEAICE_deltaTtherm |
| 753 |
HSALT(I,J,bi,bj) = 0.0 _d 0 |
| 754 |
ENDIF |
| 755 |
ENDDO |
| 756 |
ENDDO |
| 757 |
|
| 758 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 759 |
CADJ STORE hsalt(:,:,bi,bj) = comlev1_bibj, |
| 760 |
CADJ & key = iicekey, byte = isbyte |
| 761 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 762 |
|
| 763 |
DO J=1,sNy |
| 764 |
DO I=1,sNx |
| 765 |
C saltWtrIce > 0 : m of sea ice that is created |
| 766 |
IF ( saltWtrIce(I,J,bi,bj) .GE. 0.0 ) THEN |
| 767 |
saltFlux(I,J,bi,bj) = |
| 768 |
& HEFFM(I,J,bi,bj)*saltWtrIce(I,J,bi,bj)* |
| 769 |
& ICE2WATR*rhoConstFresh*SEAICE_salinity* |
| 770 |
& salt(I,j,kSurface,bi,bj)/SEAICE_deltaTtherm |
| 771 |
#ifdef ALLOW_SALT_PLUME |
| 772 |
C saltPlumeFlux is defined only during freezing: |
| 773 |
saltPlumeFlux(I,J,bi,bj)= |
| 774 |
& HEFFM(I,J,bi,bj)*saltWtrIce(I,J,bi,bj)* |
| 775 |
& ICE2WATR*rhoConstFresh*(1-SEAICE_salinity)* |
| 776 |
& salt(I,j,kSurface,bi,bj)/SEAICE_deltaTtherm |
| 777 |
C if SaltPlumeSouthernOcean=.FALSE. turn off salt plume in Southern Ocean |
| 778 |
IF ( .NOT. SaltPlumeSouthernOcean ) THEN |
| 779 |
IF ( YC(I,J,bi,bj) .LT. 0.0 _d 0 ) |
| 780 |
& saltPlumeFlux(i,j,bi,bj) = 0.0 _d 0 |
| 781 |
ENDIF |
| 782 |
|
| 783 |
#endif /* ALLOW_SALT_PLUME */ |
| 784 |
C saltWtrIce < 0 : m of sea ice that is melted |
| 785 |
ELSE |
| 786 |
saltFlux(I,J,bi,bj) = |
| 787 |
& HEFFM(I,J,bi,bj)*saltWtrIce(I,J,bi,bj)* |
| 788 |
& HSALT(I,J,bi,bj)/ |
| 789 |
& (HEFF(I,J,bi,bj)-saltWtrIce(I,J,bi,bj))/ |
| 790 |
& SEAICE_deltaTtherm |
| 791 |
#ifdef ALLOW_SALT_PLUME |
| 792 |
saltPlumeFlux(i,j,bi,bj) = 0.0 _d 0 |
| 793 |
#endif /* ALLOW_SALT_PLUME */ |
| 794 |
ENDIF |
| 795 |
C update HSALT based on surface saltFlux |
| 796 |
HSALT(I,J,bi,bj) = HSALT(I,J,bi,bj) + |
| 797 |
& saltFlux(I,J,bi,bj) * SEAICE_deltaTtherm |
| 798 |
saltFlux(I,J,bi,bj) = |
| 799 |
& saltFlux(I,J,bi,bj) + saltFluxAdjust(I,J) |
| 800 |
C set HSALT = 0 if HEFF = 0 and compute salt to dump into ocean |
| 801 |
IF ( HEFF(I,J,bi,bj) .EQ. 0.0 ) THEN |
| 802 |
saltFlux(I,J,bi,bj) = saltFlux(I,J,bi,bj) - |
| 803 |
& HEFFM(I,J,bi,bj) * HSALT(I,J,bi,bj) / |
| 804 |
& SEAICE_deltaTtherm |
| 805 |
HSALT(I,J,bi,bj) = 0.0 _d 0 |
| 806 |
#ifdef ALLOW_SALT_PLUME |
| 807 |
saltPlumeFlux(i,j,bi,bj) = 0.0 _d 0 |
| 808 |
#endif /* ALLOW_SALT_PLUME */ |
| 809 |
ENDIF |
| 810 |
ENDDO |
| 811 |
ENDDO |
| 812 |
#endif /* SEAICE_SALINITY */ |
| 813 |
#endif /* ALLOW_ATM_TEMP */ |
| 814 |
|
| 815 |
DO J=1,sNy |
| 816 |
DO I=1,sNx |
| 817 |
C NOW GET TOTAL QNET AND QSW |
| 818 |
QNET(I,J,bi,bj) = QNETI(I,J) * AREANm1(I,J,bi,bj) |
| 819 |
& +a_QbyATM_open(I,J) * (ONE-AREANm1(I,J,bi,bj)) |
| 820 |
QSW(I,J,bi,bj) = a_QSWbyATM_cover(I,J) * AREANm1(I,J,bi,bj) |
| 821 |
& +a_QSWbyATM_open(I,J) * (ONE-AREANm1(I,J,bi,bj)) |
| 822 |
ENDDO |
| 823 |
ENDDO |
| 824 |
|
| 825 |
#ifdef ALLOW_DIAGNOSTICS |
| 826 |
IF ( useDiagnostics ) THEN |
| 827 |
IF ( DIAGNOSTICS_IS_ON('SIqneto ',myThid) ) THEN |
| 828 |
DO J=1,sNy |
| 829 |
DO I=1,sNx |
| 830 |
DIAGarray(I,J) = a_QbyATM_open(I,J) * |
| 831 |
& (ONE-areaNm1(I,J,bi,bj)) |
| 832 |
ENDDO |
| 833 |
ENDDO |
| 834 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIqneto ',0,1,3,bi,bj,myThid) |
| 835 |
ENDIF |
| 836 |
IF ( DIAGNOSTICS_IS_ON('SIqneti ',myThid) ) THEN |
| 837 |
DO J=1,sNy |
| 838 |
DO I=1,sNx |
| 839 |
DIAGarray(I,J) = QNETI(I,J) * areaNm1(I,J,bi,bj) |
| 840 |
ENDDO |
| 841 |
ENDDO |
| 842 |
CALL DIAGNOSTICS_FILL(DIAGarray,'SIqneti ',0,1,3,bi,bj,myThid) |
| 843 |
ENDIF |
| 844 |
ENDIF |
| 845 |
#endif |
| 846 |
|
| 847 |
|
| 848 |
DO J=1,sNy |
| 849 |
DO I=1,sNx |
| 850 |
|
| 851 |
C Add d_HEFFbyICEonOCN contribution to QNET |
| 852 |
#ifdef SEAICE_QBYICE_IS_WPERM2 |
| 853 |
tmpscal1= |
| 854 |
& -maskC(I,J,kSurface,bi,bj) |
| 855 |
& *(HeatCapacity_Cp*rUnit2mass/QI) |
| 856 |
& *72.0764 _d 0 |
| 857 |
QNET(I,J,bi,bj) = QNET(I,J,bi,bj) |
| 858 |
& + ( d_QbyICE(I,J) + d_QbySNW(I,J) ) |
| 859 |
& * tmpscal1 |
| 860 |
#else |
| 861 |
tmpscal1 = |
| 862 |
& - ( d_HEFFbyICEonOCN(I,J)+d_HEFFbySNWonOCN(I,J) ) |
| 863 |
& *recip_dRf(kSurface)*recip_hFacC(i,j,kSurface,bi,bj) |
| 864 |
& *72.0764 _d 0 |
| 865 |
QNET(I,J,bi,bj) = QNET(I,J,bi,bj) |
| 866 |
& +tmpscal1 |
| 867 |
& /SEAICE_deltaTtherm*maskC(I,J,kSurface,bi,bj) |
| 868 |
& *HeatCapacity_Cp*rUnit2mass |
| 869 |
& *drF(kSurface)*hFacC(i,j,kSurface,bi,bj) |
| 870 |
#endif |
| 871 |
|
| 872 |
ENDDO |
| 873 |
ENDDO |
| 874 |
|
| 875 |
#ifdef SEAICE_DEBUG |
| 876 |
CALL PLOT_FIELD_XYRL( QSW,'Current QSW ', myIter, myThid ) |
| 877 |
CALL PLOT_FIELD_XYRL( QNET,'Current QNET ', myIter, myThid ) |
| 878 |
CALL PLOT_FIELD_XYRL( EmPmR,'Current EmPmR ', myIter, myThid ) |
| 879 |
#endif /* SEAICE_DEBUG */ |
| 880 |
|
| 881 |
crg Added by Ralf Giering: do we need DO_WE_NEED_THIS ? |
| 882 |
#define DO_WE_NEED_THIS |
| 883 |
C NOW ZERO OUTSIDE POINTS |
| 884 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 885 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 886 |
CADJ & key = iicekey, byte = isbyte |
| 887 |
CADJ STORE heff(:,:,bi,bj) = comlev1_bibj, |
| 888 |
CADJ & key = iicekey, byte = isbyte |
| 889 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 890 |
DO J=1,sNy |
| 891 |
DO I=1,sNx |
| 892 |
C NOW SET AREA(I,J,bi,bj)=0 WHERE NO ICE IS |
| 893 |
AREA(I,J,bi,bj)=MIN(AREA(I,J,bi,bj) |
| 894 |
& ,HEFF(I,J,bi,bj)/.0001 _d 0) |
| 895 |
ENDDO |
| 896 |
ENDDO |
| 897 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 898 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 899 |
CADJ & key = iicekey, byte = isbyte |
| 900 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 901 |
DO J=1,sNy |
| 902 |
DO I=1,sNx |
| 903 |
C NOW TRUNCATE AREA |
| 904 |
#ifdef DO_WE_NEED_THIS |
| 905 |
AREA(I,J,bi,bj)=MIN(ONE,AREA(I,J,bi,bj)) |
| 906 |
ENDDO |
| 907 |
ENDDO |
| 908 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 909 |
CADJ STORE area(:,:,bi,bj) = comlev1_bibj, |
| 910 |
CADJ & key = iicekey, byte = isbyte |
| 911 |
CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj, |
| 912 |
CADJ & key = iicekey, byte = isbyte |
| 913 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 914 |
DO J=1,sNy |
| 915 |
DO I=1,sNx |
| 916 |
AREA(I,J,bi,bj) = MAX(ZERO,AREA(I,J,bi,bj)) |
| 917 |
HSNOW(I,J,bi,bj) = MAX(ZERO,HSNOW(I,J,bi,bj)) |
| 918 |
#endif /* DO_WE_NEED_THIS */ |
| 919 |
AREA(I,J,bi,bj) = AREA(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 920 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 921 |
#ifdef SEAICE_CAP_HEFF |
| 922 |
HEFF(I,J,bi,bj)=MIN(MAX_HEFF,HEFF(I,J,bi,bj)) |
| 923 |
#endif /* SEAICE_CAP_HEFF */ |
| 924 |
HSNOW(I,J,bi,bj) = HSNOW(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 925 |
ENDDO |
| 926 |
ENDDO |
| 927 |
|
| 928 |
#ifdef ALLOW_DIAGNOSTICS |
| 929 |
IF ( useDiagnostics ) THEN |
| 930 |
IF ( DIAGNOSTICS_IS_ON('SIthdgrh',myThid) ) THEN |
| 931 |
C use (abuse) GHEFF to diagnose the total thermodynamic growth rate |
| 932 |
DO J=1,sNy |
| 933 |
DO I=1,sNx |
| 934 |
GHEFF(I,J) = (HEFF(I,J,bi,bj)-HEFFNm1(I,J,bi,bj)) |
| 935 |
& /SEAICE_deltaTtherm |
| 936 |
ENDDO |
| 937 |
ENDDO |
| 938 |
CALL DIAGNOSTICS_FILL(GHEFF,'SIthdgrh',0,1,3,bi,bj,myThid) |
| 939 |
ENDIF |
| 940 |
ENDIF |
| 941 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 942 |
|
| 943 |
#ifdef ALLOW_SEAICE_FLOODING |
| 944 |
IF ( SEAICEuseFlooding ) THEN |
| 945 |
C convert snow to ice if submerged |
| 946 |
DO J=1,sNy |
| 947 |
DO I=1,sNx |
| 948 |
hDraft = (HSNOW(I,J,bi,bj)*SEAICE_rhoSnow |
| 949 |
& +HEFF(I,J,bi,bj)*SEAICE_rhoIce)/1000. _d 0 |
| 950 |
C here GEFF is the gain of ice due to flooding |
| 951 |
GHEFF(I,J) = hDraft - MIN(hDraft,HEFF(I,J,bi,bj)) |
| 952 |
HEFF(I,J,bi,bj) = HEFF(I,J,bi,bj) + GHEFF(I,J) |
| 953 |
HSNOW(I,J,bi,bj) = MAX(0. _d 0, |
| 954 |
& HSNOW(I,J,bi,bj)-GHEFF(I,J)*ICE2SNOW) |
| 955 |
ENDDO |
| 956 |
ENDDO |
| 957 |
#ifdef ALLOW_DIAGNOSTICS |
| 958 |
IF ( useDiagnostics ) THEN |
| 959 |
IF ( DIAGNOSTICS_IS_ON('SIsnwice',myThid) ) THEN |
| 960 |
C turn GHEFF into a rate |
| 961 |
DO J=1,sNy |
| 962 |
DO I=1,sNx |
| 963 |
GHEFF(I,J) = GHEFF(I,J)/SEAICE_deltaTtherm |
| 964 |
ENDDO |
| 965 |
ENDDO |
| 966 |
CALL DIAGNOSTICS_FILL(GHEFF,'SIsnwice',0,1,3,bi,bj,myThid) |
| 967 |
ENDIF |
| 968 |
ENDIF |
| 969 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 970 |
ENDIF |
| 971 |
#endif /* ALLOW_SEAICE_FLOODING */ |
| 972 |
|
| 973 |
IF ( useRealFreshWaterFlux ) THEN |
| 974 |
DO J=1,sNy |
| 975 |
DO I=1,sNx |
| 976 |
sIceLoad(i,j,bi,bj) = HEFF(I,J,bi,bj)*SEAICE_rhoIce |
| 977 |
& + HSNOW(I,J,bi,bj)*SEAICE_rhoSnow |
| 978 |
ENDDO |
| 979 |
ENDDO |
| 980 |
ENDIF |
| 981 |
|
| 982 |
#ifdef SEAICE_AGE |
| 983 |
# ifndef SEAICE_AGE_VOL |
| 984 |
C Sources and sinks for sea ice age: |
| 985 |
C assume that a) freezing: new ice fraction forms with zero age |
| 986 |
C b) melting: ice fraction vanishes with current age |
| 987 |
DO J=1,sNy |
| 988 |
DO I=1,sNx |
| 989 |
IF ( AREA(I,J,bi,bj) .GT. 0.15 ) THEN |
| 990 |
IF ( AREA(i,j,bi,bj) .LT. old_AREA(i,j) ) THEN |
| 991 |
C-- scale effective ice-age to account for ice-age sink associated with melting |
| 992 |
IceAge(i,j,bi,bj) = IceAge(i,j,bi,bj) |
| 993 |
& *AREA(i,j,bi,bj)/old_AREA(i,j) |
| 994 |
ENDIF |
| 995 |
C-- account for aging: |
| 996 |
IceAge(i,j,bi,bj) = IceAge(i,j,bi,bj) |
| 997 |
& + AREA(i,j,bi,bj) * SEAICE_deltaTtherm |
| 998 |
ELSE |
| 999 |
IceAge(i,j,bi,bj) = ZERO |
| 1000 |
ENDIF |
| 1001 |
ENDDO |
| 1002 |
ENDDO |
| 1003 |
# else /* ifdef SEAICE_AGE_VOL */ |
| 1004 |
C Sources and sinks for sea ice age: |
| 1005 |
C assume that a) freezing: new ice volume forms with zero age |
| 1006 |
C b) melting: ice volume vanishes with current age |
| 1007 |
DO J=1,sNy |
| 1008 |
DO I=1,sNx |
| 1009 |
C-- compute actual age from effective age: |
| 1010 |
IF (OLD_AREA(i,j).GT.0. _d 0) THEN |
| 1011 |
age_actual=IceAge(i,j,bi,bj)/OLD_AREA(i,j) |
| 1012 |
ELSE |
| 1013 |
age_actual=0. _d 0 |
| 1014 |
ENDIF |
| 1015 |
IF ( (OLD_HEFF(i,j).LT.HEFF(i,j,bi,bj)).AND. |
| 1016 |
& (AREA(i,j,bi,bj).GT.0.15) ) THEN |
| 1017 |
age_actual=age_actual*OLD_HEFF(i,j)/ |
| 1018 |
& HEFF(i,j,bi,bj)+SEAICE_deltaTtherm |
| 1019 |
ELSEIF (AREA(i,j,bi,bj).LE.0.15) THEN |
| 1020 |
age_actual=0. _d 0 |
| 1021 |
ELSE |
| 1022 |
age_actual=age_actual+SEAICE_deltaTtherm |
| 1023 |
ENDIF |
| 1024 |
C-- re-scale to effective age: |
| 1025 |
IceAge(i,j,bi,bj) = age_actual*AREA(i,j,bi,bj) |
| 1026 |
ENDDO |
| 1027 |
ENDDO |
| 1028 |
# endif /* SEAICE_AGE_VOL */ |
| 1029 |
#endif /* SEAICE_AGE */ |
| 1030 |
|
| 1031 |
ENDDO |
| 1032 |
ENDDO |
| 1033 |
|
| 1034 |
RETURN |
| 1035 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph