| 1 |
C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/shelfice/shelfice_thermodynamics.F,v 1.47 2015/12/17 01:52:05 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "SHELFICE_OPTIONS.h" |
| 5 |
#ifdef ALLOW_AUTODIFF |
| 6 |
# include "AUTODIFF_OPTIONS.h" |
| 7 |
#endif |
| 8 |
#ifdef ALLOW_CTRL |
| 9 |
# include "CTRL_OPTIONS.h" |
| 10 |
#endif |
| 11 |
|
| 12 |
CBOP |
| 13 |
C !ROUTINE: SHELFICE_THERMODYNAMICS |
| 14 |
C !INTERFACE: |
| 15 |
SUBROUTINE SHELFICE_THERMODYNAMICS( |
| 16 |
I myTime, myIter, myThid ) |
| 17 |
C !DESCRIPTION: \bv |
| 18 |
C *=============================================================* |
| 19 |
C | S/R SHELFICE_THERMODYNAMICS |
| 20 |
C | o shelf-ice main routine. |
| 21 |
C | compute temperature and (virtual) salt flux at the |
| 22 |
C | shelf-ice ocean interface |
| 23 |
C | |
| 24 |
C | stresses at the ice/water interface are computed in separate |
| 25 |
C | routines that are called from mom_fluxform/mom_vecinv |
| 26 |
|
| 27 |
CIGF | ASSUMES |
| 28 |
C--- | * SHELFICEconserve = true |
| 29 |
C *=============================================================* |
| 30 |
C \ev |
| 31 |
|
| 32 |
C !USES: |
| 33 |
IMPLICIT NONE |
| 34 |
|
| 35 |
C === Global variables === |
| 36 |
#include "SIZE.h" |
| 37 |
#include "EEPARAMS.h" |
| 38 |
#include "PARAMS.h" |
| 39 |
#include "GRID.h" |
| 40 |
#include "DYNVARS.h" |
| 41 |
#include "FFIELDS.h" |
| 42 |
#include "SHELFICE.h" |
| 43 |
#include "SHELFICE_COST.h" |
| 44 |
#ifdef ALLOW_AUTODIFF |
| 45 |
# include "CTRL_SIZE.h" |
| 46 |
# include "ctrl.h" |
| 47 |
# include "ctrl_dummy.h" |
| 48 |
#endif /* ALLOW_AUTODIFF */ |
| 49 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 50 |
# ifdef SHI_ALLOW_GAMMAFRICT |
| 51 |
# include "tamc.h" |
| 52 |
# include "tamc_keys.h" |
| 53 |
# endif /* SHI_ALLOW_GAMMAFRICT */ |
| 54 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 55 |
|
| 56 |
C !INPUT/OUTPUT PARAMETERS: |
| 57 |
C === Routine arguments === |
| 58 |
C myIter :: iteration counter for this thread |
| 59 |
C myTime :: time counter for this thread |
| 60 |
C myThid :: thread number for this instance of the routine. |
| 61 |
_RL myTime |
| 62 |
INTEGER myIter |
| 63 |
INTEGER myThid |
| 64 |
|
| 65 |
#ifdef ALLOW_SHELFICE |
| 66 |
C !LOCAL VARIABLES : |
| 67 |
C === Local variables === |
| 68 |
C I,J,K,Kp1,bi,bj :: loop counters |
| 69 |
C tLoc, sLoc, pLoc :: local potential temperature, salinity, pressure |
| 70 |
C theta/saltFreeze :: temperature and salinity of water at the |
| 71 |
C ice-ocean interface (at the freezing point) |
| 72 |
C freshWaterFlux :: local variable for fresh water melt flux due |
| 73 |
C to melting in kg/m^2/s |
| 74 |
C (negative density x melt rate) |
| 75 |
C iceFrontCellThickness :: the ratio of the horizontal length |
| 76 |
C of the ice front in each model grid cell |
| 77 |
C divided by the grid cell area. The "thickness" |
| 78 |
C of the colum perpendicular to the front |
| 79 |
C iceFrontWidth :: the width of the ice front. |
| 80 |
|
| 81 |
INTEGER I,J,K,Kp1 |
| 82 |
INTEGER bi,bj |
| 83 |
INTEGER CURI, CURJ, FRONT_K |
| 84 |
|
| 85 |
_RL tLoc |
| 86 |
_RL sLoc |
| 87 |
_RL pLoc |
| 88 |
_RL uLoc |
| 89 |
_RL vLoc |
| 90 |
_RL wLoc |
| 91 |
_RL speedLoc |
| 92 |
|
| 93 |
C#ifndef SHI_USTAR_WETPOINT |
| 94 |
C _RL uLoc(1-olx:snx+olx,1-oly:sny+oly) |
| 95 |
C _RL vLoc(1-olx:snx+olx,1-oly:sny+oly) |
| 96 |
C#endif |
| 97 |
C _RL velSq(1-olx:snx+olx,1-oly:sny+oly) |
| 98 |
|
| 99 |
_RL freshWaterFlux |
| 100 |
|
| 101 |
_RL ice_bottom_Z_C, seafloor_N |
| 102 |
_RL wet_top_Z_N, wet_bottom_Z_N |
| 103 |
_RL iceFrontWetContact_Z_max, iceFrontContact_Z_min |
| 104 |
_RL iceFrontContact_H |
| 105 |
_RL iceFrontVertContactFrac, iceFrontCellThickness |
| 106 |
_RL iceFrontWidth, iceFrontFaceArea |
| 107 |
_RL thermalConductionDistance, thermalConductionTemp |
| 108 |
_RL tmpHeatFlux, tmpFWFLX |
| 109 |
_RL tmpForcingT, tmpForcingS |
| 110 |
_RL tmpFac, icfgridareaFrac |
| 111 |
INTEGER SI |
| 112 |
|
| 113 |
#ifdef ALLOW_DIAGNOSTICS |
| 114 |
_RL uStarDiag(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 115 |
#endif /* ALLOW_DIAGNOSTICS */ |
| 116 |
|
| 117 |
_RL epsilon_H |
| 118 |
|
| 119 |
#ifdef ALLOW_SHIFWFLX_CONTROL |
| 120 |
_RL xx_shifwflx_loc(1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 121 |
#endif |
| 122 |
|
| 123 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 124 |
|
| 125 |
C-- minimum fraction of a cell adjacent to an ice front that must be |
| 126 |
C-- wet for exchange to happen |
| 127 |
epsilon_H = 1. _d -03 |
| 128 |
|
| 129 |
C-- hard coded for now. |
| 130 |
thermalConductionDistance = 100.0 _d 0 |
| 131 |
thermalConductionTemp = -20.0 _d 0 |
| 132 |
icfgridareaFrac = 1.0 _d 0 |
| 133 |
|
| 134 |
C heat flux into the ice shelf, default is diffusive flux |
| 135 |
C (Holland and Jenkins, 1999, eq.21) |
| 136 |
|
| 137 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 138 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 139 |
DO J = 1-OLy,sNy+OLy |
| 140 |
DO I = 1-OLx,sNx+OLx |
| 141 |
shelfIceHeatFlux (I,J,bi,bj) = 0. _d 0 |
| 142 |
shelfIceFreshWaterFlux(I,J,bi,bj) = 0. _d 0 |
| 143 |
SHIICFHeatFlux (I,J,bi,bj) = 0. _d 0 |
| 144 |
SHIICFFreshWaterFlux(I,J,bi,bj) = 0. _d 0 |
| 145 |
shelficeForcingT (I,J,bi,bj) = 0. _d 0 |
| 146 |
shelficeForcingS (I,J,bi,bj) = 0. _d 0 |
| 147 |
shelficeForcingTR (I,J,bi,bj) = 0. _d 0 |
| 148 |
|
| 149 |
DO K = 1, NR |
| 150 |
iceFrontHeatFlux(I,J,K,bi,bj) = 0. _d 0 |
| 151 |
iceFrontFreshWaterFlux(I,J,K,bi,bj) = 0. _d 0 |
| 152 |
iceFrontForcingT(I,J,K,bi,bj) = 0. _d 0 |
| 153 |
iceFrontForcingS(I,J,K,bi,bj) = 0. _d 0 |
| 154 |
iceFrontForcingTR(I,J,K,bi,bj) = 0. _d 0 |
| 155 |
ENDDO /* K */ |
| 156 |
|
| 157 |
ENDDO /* I */ |
| 158 |
ENDDO /* J */ |
| 159 |
|
| 160 |
C 3-D velocity-dependent turbulent transfer coefficients |
| 161 |
|
| 162 |
DO J = 1-OLy,sNy+OLy |
| 163 |
DO I = 1-OLx,sNx+OLx |
| 164 |
DO K = 1, NR |
| 165 |
|
| 166 |
C make local copies of velocity |
| 167 |
uLoc = 0.5*(uVel(I,J,K,bi,bj)+uVel(I+1,J,K,bi,bj)) |
| 168 |
vLoc = 0.5*(vVel(I,J,K,bi,bj)+vVel(I,J+1,K,bi,bj)) |
| 169 |
wLoc = 0.5*(wVel(I,J,K,bi,bj)+wVel(I,J,K+1,bi,bj)) |
| 170 |
speedLoc = SQRT(uLoc*uLoc + vLoc*vLoc + wLoc*wLoc) |
| 171 |
|
| 172 |
#ifdef ALLOW_shiTransCoeff_3d |
| 173 |
shiTransCoeffT(I,J,K,bi,bj) = 1.1 _d -3 * |
| 174 |
& abs(speedLoc) + 1. _d -4 |
| 175 |
|
| 176 |
shiTransCoeffS(I,J,K,bi,bj) = 3.1 _d -5 * |
| 177 |
& abs(speedLoc) + 5.05 _d -7 |
| 178 |
#endif |
| 179 |
ENDDO /* K */ |
| 180 |
ENDDO /* I */ |
| 181 |
ENDDO /* J */ |
| 182 |
|
| 183 |
C-- First ice front then ice shelf. Loop through each i,j point |
| 184 |
C-- process ice fronts in k, then process ice shelf. |
| 185 |
DO J = 1, sNy |
| 186 |
DO I = 1, sNx |
| 187 |
|
| 188 |
C-- The K index where the ice front ends (0 if no ice front) |
| 189 |
FRONT_K = K_icefront(I,J,bi,bj) |
| 190 |
|
| 191 |
C-- If there is an ice front at this (I,J) continue |
| 192 |
IF (FRONT_K .GT. 0) THEN |
| 193 |
|
| 194 |
C-- Loop through all depths where the ice front is fround |
| 195 |
DO K = 1, FRONT_K |
| 196 |
C-- Loop around the four laterally neighboring cells of the ice front. |
| 197 |
C-- If any neighboring points has wet volume in contact with the ice |
| 198 |
C-- front at (I,J) then calculate ice-ocean exchanges. |
| 199 |
C-- The four laterally neighboring point are at (CURI,CURJ) |
| 200 |
DO SI = 1,4 |
| 201 |
IF (SI .EQ. 1) THEN |
| 202 |
C-- Looking to right |
| 203 |
CURI = I+1 |
| 204 |
CURJ = J |
| 205 |
|
| 206 |
iceFrontWidth = dyG(I+1,J,bi,bj) |
| 207 |
|
| 208 |
ELSEIF (SI .EQ. 2) THEN |
| 209 |
C-- Looking to LEFT |
| 210 |
CURI = I-1 |
| 211 |
CURJ = J |
| 212 |
|
| 213 |
iceFrontWidth = dyG(I,J,bi,bj) |
| 214 |
ELSEIF (SI .EQ. 3) THEN |
| 215 |
C-- Looking to NORTH |
| 216 |
CURI = I |
| 217 |
CURJ = J+1 |
| 218 |
|
| 219 |
iceFrontWidth = dxG(I,J+1,bi,bj) |
| 220 |
ELSEIF (SI .EQ. 4) THEN |
| 221 |
C-- Looking to south |
| 222 |
CURI = I |
| 223 |
CURJ = J-1 |
| 224 |
|
| 225 |
iceFrontWidth = dxG(I,J,bi,bj) |
| 226 |
endif |
| 227 |
|
| 228 |
C-- cell depth describes the average distance |
| 229 |
C-- perpendicular to the ice front fact |
| 230 |
|
| 231 |
iceFrontCellThickness = 0. _d 0 |
| 232 |
IF(iceFrontWidth.NE.0. _d 0) |
| 233 |
& iceFrontCellThickness = RA(CURI,CURJ,bi,bj) |
| 234 |
& /iceFrontWidth |
| 235 |
iceFrontFaceArea = DRF(K)*iceFrontWidth |
| 236 |
|
| 237 |
C-- First, make sure the adjacent point has at least some water in it. |
| 238 |
IF (_hFacC(CURI,CURJ,K,bi,bj) .GT. zeroRL) THEN |
| 239 |
|
| 240 |
C-- we need to determine how much of the ice front is in contact with |
| 241 |
C-- water in the neighboring grid cell at this depth level. |
| 242 |
|
| 243 |
C-- 1. Determine the top depth with water in the current cell |
| 244 |
C-- 2. Determine the top depth with water in the neighbor cell |
| 245 |
C-- 3. Determine the depth where water gap between (1) and (2). |
| 246 |
C-- 4. If there is a gap then ice front is in contact with water in |
| 247 |
C-- the neighboring cell |
| 248 |
|
| 249 |
C-- ice_bottom_Z_C: the depth (m) of the bottom of the ice in the |
| 250 |
C-- current cell. Bounded between rF(K) and rF(K+1). |
| 251 |
C-- * If the ice extends past the bottom of the cell then |
| 252 |
C-- ice_bottom_Z_C = rF(K+1) |
| 253 |
C-- [rF(k) >= ice_bottom_Z_C >= rF(K+1)] (rF is negative) |
| 254 |
ice_bottom_Z_C = max(rF(K+1), |
| 255 |
& min(Ro_surf(I,J, bi,bj), rF(K))) |
| 256 |
|
| 257 |
C-- wet_top_Z_N: the depth (m) of the bottom of the ice in the |
| 258 |
C-- neighboring grid. If the neighboring cell has ice in |
| 259 |
C-- (in the form of a shelf or front) then wet_top_Z_N is |
| 260 |
C-- the depth of this neighboring ice. |
| 261 |
C-- |
| 262 |
C-- * If neighbor cell has no ice, then Ro_surf = 0 and |
| 263 |
C-- wet_top_Z_N = rF(K) |
| 264 |
C-- [rF(k) >= wet_top_Z_N >= rF(K+1)] (rF is negative) |
| 265 |
|
| 266 |
wet_top_Z_N = max(rF(K+1), |
| 267 |
& min(Ro_surf(CURI,CURJ, bi,bj), rF(K))) |
| 268 |
|
| 269 |
C-- wet_bottom_Z_N: the depth (m) of the bottom of the wet part of the |
| 270 |
C-- neighboring cell. If the seafloor reaches into |
| 271 |
C-- the grid cell then the bottom of the wet part of the |
| 272 |
C-- grid cell is at the seafloor. |
| 273 |
C-- |
| 274 |
C-- * If the seafloor is deeper than this grid cell then |
| 275 |
C-- wet_bottom_Z = rF(K+1) |
| 276 |
C-- * If the seafloor is shallower than this grid cell then |
| 277 |
C-- wet_bottom_Z = rF(K) |
| 278 |
C-- * If the seafloor reaches partly into this grid cell |
| 279 |
C-- then wet_bottom_Z = R_low |
| 280 |
|
| 281 |
C-- [rF(k) >= wet_bottom_Z >= rF(K+1)] (rF is negative) |
| 282 |
|
| 283 |
wet_bottom_Z_N = min(rF(K), |
| 284 |
& max(R_low(CURI,CURJ, bi,bj), rF(K+1))) |
| 285 |
|
| 286 |
C-- iceFrontWetContact_Z_max: The deepest point where the |
| 287 |
C-- the ice front at (I,J) is in contact with water |
| 288 |
C-- in the neighboring cell. The shallower of |
| 289 |
C-- wet_bottom_Z_N (seafloor depth of neighboring point) and |
| 290 |
C-- ice_bottom_Z_C (bottom of ice front in this center cell). |
| 291 |
|
| 292 |
C-- * wet_bottom_Z_N if the seafloor of the neighboring |
| 293 |
C-- cell is shallower than the ice draft at (I,J). |
| 294 |
C-- * ice_bottom_Z_C if the ice draft at (I,J) is shallower |
| 295 |
C-- than the seafloor of the neighboring cell. |
| 296 |
|
| 297 |
IF (ice_bottom_Z_C .GT. wet_bottom_Z_N) THEN |
| 298 |
iceFrontWetContact_Z_max = ice_bottom_Z_C |
| 299 |
ELSE |
| 300 |
iceFrontWetContact_Z_max = wet_bottom_Z_N |
| 301 |
ENDIF |
| 302 |
|
| 303 |
C-- The shallowest depth where the ice front at (I,J) is in contact |
| 304 |
C-- with water in the neighboring cell. If the neighboring cell has |
| 305 |
C-- no ice draft then wet_top_Z_N = rF(k), the top of the cell. |
| 306 |
C-- Otherwise, the shallowest depth where the ice front at (I,J) can |
| 307 |
C-- be in in contact with water (not ice) in (CURI, CURJ) |
| 308 |
C-- is wet_top_Z_N. |
| 309 |
|
| 310 |
C-- the fraction of the grid cell height that has ice draft in contact |
| 311 |
C-- with water in the neighboring cell. |
| 312 |
iceFrontVertContactFrac = |
| 313 |
& (wet_top_Z_N - iceFrontWetContact_Z_max)/ DRF(K) |
| 314 |
|
| 315 |
|
| 316 |
C-- Only proceed if iceFrontVertContactFrac is > 0, the |
| 317 |
C-- ice draft at (I,J) |
| 318 |
C-- is in contact with some water in the neighboring grid cell. |
| 319 |
IF (iceFrontVertContactFrac .GT. epsilon_H) THEN |
| 320 |
tLoc = theta(CURI,CURJ,K,bi,bj) |
| 321 |
sLoc = MAX(salt(CURI,CURJ,K,bi,bj), zeroRL) |
| 322 |
|
| 323 |
C-- use pressure at the halfway point between the top and bottom of |
| 324 |
C-- points of the ice front where the ice front is in contact with |
| 325 |
C-- open water. |
| 326 |
pLoc = 0.5 _d 0 * ABS(wet_top_Z_N + |
| 327 |
& iceFrontWetContact_Z_max) |
| 328 |
|
| 329 |
CALL SHELFICE_SOLVE4FLUXES( |
| 330 |
I tLoc, sLoc, pLoc, |
| 331 |
#ifndef ALLOW_shiTransCoeff_3d |
| 332 |
I shiTransCoeffT(CURI,CURJ,bi,bj), |
| 333 |
I shiTransCoeffS(CURI,CURJ,bi,bj), |
| 334 |
#else |
| 335 |
I shiTransCoeffT(CURI,CURJ,K,bi,bj), |
| 336 |
I shiTransCoeffS(CURI,CURJ,K,bi,bj), |
| 337 |
#endif |
| 338 |
I thermalConductionDistance, |
| 339 |
I thermalConductionTemp, |
| 340 |
O tmpHeatFlux, tmpFWFLX, |
| 341 |
O tmpForcingT, tmpForcingS, |
| 342 |
I bi, bj, myTime, myIter, myThid ) |
| 343 |
|
| 344 |
C-- fluxes and forcing must be scaled by iceFrontVertContactFract and |
| 345 |
C-- iceFrontContactFrac some fraction of the heigth and width of the |
| 346 |
C-- grid cell face may not ice in contact with water. |
| 347 |
|
| 348 |
C tmpHeatFlux and tmpFWFLX come as W/m^2 and kg/m^2/s respectively |
| 349 |
C-- but these rates only apply to the |
| 350 |
C-- fraction of the grid cell that has ice in contact with seawater. |
| 351 |
C-- we must scale by iceFrontVertContactFrac to get to the average |
| 352 |
C-- fluxes in this grid cell. |
| 353 |
|
| 354 |
C-- In units W/m^2 |
| 355 |
iceFrontHeatFlux(CURI,CURJ,K,bi,bj) = |
| 356 |
& iceFrontHeatFlux(CURI,CURJ,K,bi,bj) + |
| 357 |
& tmpHeatFlux*iceFrontVertContactFrac |
| 358 |
|
| 359 |
C In units of kg/m^2/s |
| 360 |
iceFrontFreshWaterFlux(CURI,CURJ,K,bi,bj) = |
| 361 |
& iceFrontFreshWaterFlux(CURI,CURJ,K,bi,bj) + |
| 362 |
& tmpFWFLX*iceFrontVertContactFrac |
| 363 |
|
| 364 |
iceFrontForcingTR(CURI,CURJ,K,bi,bj) = |
| 365 |
& iceFrontFreshWaterFlux(CURI,CURJ,K,bi,bj) * |
| 366 |
& mass2rUnit |
| 367 |
|
| 368 |
C ow - 06/29/2018 |
| 369 |
C ow - Verticallly sum up the 3D icefront heat and freshwater fluxes to |
| 370 |
C ow - compute the total flux for the water column. The shelfice fluxes, |
| 371 |
C ow - which are 2D, will be added later. NOTE that only |
| 372 |
C ow - ice-front melts below shelf-ice are included to be consistent |
| 373 |
C ow - with Rignot's data |
| 374 |
if(k.GE.kTopC(I,J,bi,bj))then |
| 375 |
if(RA(CURI,CURJ,bi,bj).NE.0. _d 0)then |
| 376 |
icfgridareaFrac = |
| 377 |
& iceFrontFaceArea/RA(CURI,CURJ,bi,bj) |
| 378 |
SHIICFHeatFlux(CURI,CURJ,bi,bj) = |
| 379 |
& SHIICFHeatFlux(CURI,CURJ,bi,bj) + |
| 380 |
& iceFrontHeatFlux(CURI,CURJ,K,bi,bj) |
| 381 |
& * icfgridareaFrac |
| 382 |
SHIICFFreshWaterFlux(CURI,CURJ,bi,bj) = |
| 383 |
& SHIICFFreshWaterFlux(CURI,CURJ,bi,bj) + |
| 384 |
& iceFrontFreshWaterFlux(CURI,CURJ,K,bi,bj) |
| 385 |
& * icfgridareaFrac |
| 386 |
endif |
| 387 |
endif |
| 388 |
C iceFrontForcing[T,S] X m/s but these rates only apply to the |
| 389 |
C-- fraction of the grid cell that has ice in contact with seawater. |
| 390 |
C-- we must scale by iceFrontVertContactFrac to get to the average |
| 391 |
C-- fluxes in this grid cell. We must also divide the by the length |
| 392 |
C-- of the grid cell perpendicular to the face. |
| 393 |
|
| 394 |
IF (iceFrontCellThickness .NE. 0. _d 0) THEN |
| 395 |
C In units of K / s |
| 396 |
iceFrontForcingT(CURI,CURJ,K,bi,bj) = |
| 397 |
& iceFrontForcingT(CURI,CURJ,K,bi,bj) + |
| 398 |
& tmpForcingT/iceFrontCellThickness* |
| 399 |
& iceFrontVertContactFrac |
| 400 |
|
| 401 |
C In units of psu /s |
| 402 |
iceFrontForcingS(CURI,CURJ,K,bi,bj) = |
| 403 |
& iceFrontForcingS(CURI,CURJ,K,bi,bj) + |
| 404 |
& tmpForcingS/iceFrontCellThickness* |
| 405 |
& iceFrontVertContactFrac |
| 406 |
|
| 407 |
ENDIF /* iceFrontCellThickness */ |
| 408 |
C In units of kg /s |
| 409 |
addMass(CURI,CURJ,K,bi,bj) = |
| 410 |
& addMass(CURI,CURJ,K,bi,bj) - |
| 411 |
& tmpFWFLX*iceFrontFaceArea* |
| 412 |
& iceFrontVertContactFrac |
| 413 |
ENDIF /* iceFrontVertContactFrac */ |
| 414 |
ENDIF /* hFacC(CURI,CURJ,K,bi,bj) */ |
| 415 |
ENDDO /* SI loop for adjacent cells */ |
| 416 |
ENDDO /* K LOOP */ |
| 417 |
ENDIF /* FRONT K */ |
| 418 |
|
| 419 |
C-- ice shelf |
| 420 |
K = kTopC(I,J,bi,bj) |
| 421 |
|
| 422 |
C-- If there is an ice front at this (I,J) continue |
| 423 |
C-- I am assuming K is only .GT. when there is at least some |
| 424 |
C-- nonzero wet point below the shelf in the grid cell. |
| 425 |
IF (K .GT. 0) THEN |
| 426 |
C-- Initialize these values to zero |
| 427 |
pLoc = 0 _d 0 |
| 428 |
tLoc = 0 _d 0 |
| 429 |
sLoc = 0 _d 0 |
| 430 |
|
| 431 |
C-- make local copies of temperature, salinity and depth |
| 432 |
C-- (pressure in deci-bar) underneath the ice |
| 433 |
C-- for the ice shelf case we use hydrostatic pressure at the ice |
| 434 |
C-- base of the ice shelf, top of the cavity. |
| 435 |
|
| 436 |
pLoc = ABS(R_shelfIce(I,J,bi,bj)) |
| 437 |
tLoc = theta(I,J,K,bi,bj) |
| 438 |
sLoc = MAX(salt(I,J,K,bi,bj), zeroRL) |
| 439 |
|
| 440 |
CALL SHELFICE_SOLVE4FLUXES( |
| 441 |
I tLoc, sLoc, pLoc, |
| 442 |
#ifndef ALLOW_shiTransCoeff_3d |
| 443 |
I shiTransCoeffT(I,J,bi,bj), |
| 444 |
I shiTransCoeffS(I,J,bi,bj), |
| 445 |
#else |
| 446 |
I shiTransCoeffT(I,J,K,bi,bj), |
| 447 |
I shiTransCoeffS(I,J,K,bi,bj), |
| 448 |
#endif |
| 449 |
I pLoc, thermalConductionTemp, |
| 450 |
O tmpHeatFlux, tmpFWFLX, |
| 451 |
O tmpForcingT, tmpForcingS, |
| 452 |
I bi, bj, myTime, myIter, myThid ) |
| 453 |
|
| 454 |
C In units of W/m^2 |
| 455 |
shelficeHeatFlux(I,J,bi,bj) = tmpHeatFlux |
| 456 |
C In units of kg/m^2/s |
| 457 |
shelfIceFreshWaterFlux(I,J,bi,bj) = tmpFWFLX |
| 458 |
|
| 459 |
shelficeForcingTR(I,J,bi,bj) = |
| 460 |
& shelfIceFreshWaterFlux(I,J,bi,bj) * mass2rUnit |
| 461 |
|
| 462 |
C ow - 06/29/2018 |
| 463 |
C ow - Now add shelfice heat and freshwater fluxes |
| 464 |
SHIICFHeatFlux(i,j,bi,bj) = |
| 465 |
& SHIICFHeatFlux(i,j,bi,bj) + |
| 466 |
& shelficeHeatFlux(i,j,bi,bj) |
| 467 |
SHIICFFreshWaterFlux(i,j,bi,bj) = |
| 468 |
& SHIICFFreshWaterFlux(i,j,bi,bj) + |
| 469 |
& shelfIceFreshWaterFlux(i,j,bi,bj) |
| 470 |
C In units of K/s -- division by drF required first |
| 471 |
shelficeForcingT(I,J,bi,bj) = tmpForcingT* |
| 472 |
& recip_drF(K)* _recip_hFacC(i,j,K,bi,bj) |
| 473 |
C In units of psu/s -- division by drF required first |
| 474 |
shelficeForcingS(I,J,bi,bj) = tmpForcingS* |
| 475 |
& recip_drF(K)* _recip_hFacC(i,j,K,bi,bj) |
| 476 |
C In units of kg/s -- multiplication of area required first |
| 477 |
addMass(I,J,K, bi,bj) = addMass(I,J,K, bi,bj) - |
| 478 |
& tmpFWFLX*RA(I,J,bi,bj) |
| 479 |
ENDIF /* SHELF K > 0 */ |
| 480 |
ENDDO /* i */ |
| 481 |
ENDDO /* j */ |
| 482 |
ENDDO /* bi */ |
| 483 |
ENDDO /* bj */ |
| 484 |
|
| 485 |
|
| 486 |
C-- Calculate new loading anomaly (in case the ice-shelf mass was updated) |
| 487 |
#ifndef ALLOW_AUTODIFF |
| 488 |
c IF ( SHELFICEloadAnomalyFile .EQ. ' ' ) THEN |
| 489 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 490 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 491 |
DO j = 1-OLy, sNy+OLy |
| 492 |
DO i = 1-OLx, sNx+OLx |
| 493 |
shelficeLoadAnomaly(i,j,bi,bj) = gravity |
| 494 |
& *( shelficeMass(i,j,bi,bj) + rhoConst*Ro_surf(i,j,bi,bj) ) |
| 495 |
ENDDO |
| 496 |
ENDDO |
| 497 |
ENDDO |
| 498 |
ENDDO |
| 499 |
c ENDIF |
| 500 |
#endif /* ndef ALLOW_AUTODIFF */ |
| 501 |
|
| 502 |
#ifdef ALLOW_DIAGNOSTICS |
| 503 |
IF ( useDiagnostics ) THEN |
| 504 |
CALL DIAGNOSTICS_FILL_RS(shelfIceFreshWaterFlux,'SHIfwFlx', |
| 505 |
& 0,1,0,1,1,myThid) |
| 506 |
CALL DIAGNOSTICS_FILL_RS(shelfIceHeatFlux, 'SHIhtFlx', |
| 507 |
& 0,1,0,1,1,myThid) |
| 508 |
|
| 509 |
CALL DIAGNOSTICS_FILL_RS(SHIICFFreshWaterFlux,'SHIICFfwFlx', |
| 510 |
& 0,1,0,1,1,myThid) |
| 511 |
CALL DIAGNOSTICS_FILL_RS(SHIICFHeatFlux, 'SHIICFhtFlx', |
| 512 |
& 0,1,0,1,1,myThid) |
| 513 |
|
| 514 |
CALL DIAGNOSTICS_FILL(iceFrontFreshWaterFlux, 'ICFfwFlx', |
| 515 |
& 0,Nr,0,1,1,myThid) |
| 516 |
CALL DIAGNOSTICS_FILL(iceFrontHeatFlux, 'ICFhtFlx', |
| 517 |
& 0,Nr,0,1,1,myThid) |
| 518 |
|
| 519 |
CALL DIAGNOSTICS_FILL(shelfIceForcingTR, 'SHITR ', |
| 520 |
& 0,Nr,0,1,1,myThid) |
| 521 |
|
| 522 |
CALL DIAGNOSTICS_FILL(iceFrontForcingTR, 'ICFTR ', |
| 523 |
& 0,Nr,0,1,1,myThid) |
| 524 |
|
| 525 |
C SHIForcT (Ice shelf forcing for theta [W/m2], >0 increases theta) |
| 526 |
tmpFac = HeatCapacity_Cp*rUnit2mass |
| 527 |
CALL DIAGNOSTICS_SCALE_FILL(shelficeForcingT,tmpFac,1, |
| 528 |
& 'SHIForcT',0,1,0,1,1,myThid) |
| 529 |
C SHIForcS (Ice shelf forcing for salt [g/m2/s], >0 increases salt) |
| 530 |
tmpFac = rUnit2mass |
| 531 |
CALL DIAGNOSTICS_SCALE_FILL(shelficeForcingS,tmpFac,1, |
| 532 |
& 'SHIForcS',0,1,0,1,1,myThid) |
| 533 |
|
| 534 |
C ICFForcT (Ice front forcing for theta [W/m2], >0 increases theta) |
| 535 |
tmpFac = HeatCapacity_Cp*rUnit2mass |
| 536 |
CALL DIAGNOSTICS_SCALE_FILL(iceFrontForcingT,tmpFac,1, |
| 537 |
& 'ICFForcT',0,Nr,0,1,1,myThid) |
| 538 |
C ICFForcS (Ice front forcing for salt [g/m2/s], >0 increases salt) |
| 539 |
tmpFac = rUnit2mass |
| 540 |
CALL DIAGNOSTICS_SCALE_FILL(iceFrontForcingS,tmpFac,1, |
| 541 |
& 'ICFForcS',0,Nr,0,1,1,myThid) |
| 542 |
|
| 543 |
C Transfer coefficients |
| 544 |
#ifndef ALLOW_shiTransCoeff_3d |
| 545 |
CALL DIAGNOSTICS_FILL(shiTransCoeffT,'SHIgammT', |
| 546 |
& 0,1,0,1,1,myThid) |
| 547 |
CALL DIAGNOSTICS_FILL(shiTransCoeffS,'SHIgammS', |
| 548 |
& 0,1,0,1,1,myThid) |
| 549 |
#else |
| 550 |
CALL DIAGNOSTICS_FILL(shiTransCoeffT,'SHIgammT', |
| 551 |
& 0,Nr,0,1,1,myThid) |
| 552 |
CALL DIAGNOSTICS_FILL(shiTransCoeffS,'SHIgammS', |
| 553 |
& 0,Nr,0,1,1,myThid) |
| 554 |
#endif |
| 555 |
C Friction velocity |
| 556 |
#ifdef SHI_ALLOW_GAMMAFRICT |
| 557 |
IF ( SHELFICEuseGammaFrict ) |
| 558 |
& CALL DIAGNOSTICS_FILL(uStarDiag,'SHIuStar',0,1,0,1,1,myThid) |
| 559 |
#endif /* SHI_ALLOW_GAMMAFRICT */ |
| 560 |
ENDIF |
| 561 |
#endif |
| 562 |
|
| 563 |
#endif /* ALLOW_SHELFICE */ |
| 564 |
RETURN |
| 565 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph