/[MITgcm]/MITgcm/pkg/seaice/seaice_growth.F
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Contents of /MITgcm/pkg/seaice/seaice_growth.F

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Revision 1.1 - (show annotations) (download)
Thu Dec 14 08:36:20 2006 UTC (17 years, 4 months ago) by mlosch
Branch: MAIN
 overhaul of thermodynamics
- growth.F and groatb.F are replaced by new routine seaice_growth.F
- budget.F is replaced by two new routines seaice_budget_ocean/ice.F
- move a few global fields out of SEAICE.h into seaice_growth.F and
  make them 2D (FICE/QNETO/ ...)
- remove FO (it is the same as QNETO)
- introduce a few local fields to avoid modifying external fields such
  as atemp, etc.

  lab_sea does not change, but hopefully it will be easier for Patrick
  do the adjoint

1 C $Header: $
2 C $Name: $
3
4 #include "SEAICE_OPTIONS.h"
5
6 CStartOfInterface
7 SUBROUTINE SEAICE_GROWTH( myTime, myIter, myThid )
8 C /==========================================================\
9 C | SUBROUTINE seaice_growth |
10 C | o Updata ice thickness and snow depth |
11 C |==========================================================|
12 C \==========================================================/
13 IMPLICIT NONE
14
15 C === Global variables ===
16 #include "SIZE.h"
17 #include "EEPARAMS.h"
18 #include "PARAMS.h"
19 #include "DYNVARS.h"
20 #include "GRID.h"
21 #include "FFIELDS.h"
22 #include "SEAICE_PARAMS.h"
23 #include "SEAICE.h"
24 #include "SEAICE_FFIELDS.h"
25
26 #ifdef ALLOW_AUTODIFF_TAMC
27 # include "tamc.h"
28 #endif
29 C === Routine arguments ===
30 C myTime - Simulation time
31 C myIter - Simulation timestep number
32 C myThid - Thread no. that called this routine.
33 _RL myTime
34 INTEGER myIter, myThid
35 CEndOfInterface
36
37 C === Local variables ===
38 C i,j,bi,bj - Loop counters
39
40 INTEGER i, j, bi, bj
41 _RL TBC, salinity_ice, SDF, ICE_DENS, Q0, QS
42 #ifdef ALLOW_SEAICE_FLOODING
43 _RL hDraft, hFlood
44 #endif /* ALLOW_SEAICE_FLOODING */
45 _RL GAREA ( 1-OLx:sNx+OLx, 1-OLy:sNy+OLy )
46 _RL GHEFF ( 1-OLx:sNx+OLx, 1-OLy:sNy+OLy )
47 C RESID_HEAT is residual heat above freezing in equivalent m of ice
48 _RL RESID_HEAT ( 1-OLx:sNx+OLx, 1-OLy:sNy+OLy )
49
50 C FICE - thermodynamic ice growth rate over sea ice in W/m^2
51 C >0 causes ice growth, <0 causes snow and sea ice melt
52 C FHEFF - effective thermodynamic ice growth rate over sea ice in W/m^2
53 C >0 causes ice growth, <0 causes snow and sea ice melt
54 C QNETO - thermodynamic ice growth rate over open water in W/m^2
55 C ( = surface heat flux )
56 C >0 causes ice growth, <0 causes snow and sea ice melt
57 C QNETI - net surface heat flux under ice in W/m^2
58 C QSWO - short wave heat flux over ocean in W/m^2
59 C QSWI - short wave heat flux under ice in W/m^2
60 _RL FHEFF (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
61 _RL FICE (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
62 _RL QNETO (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
63 _RL QNETI (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
64 _RL QSWO (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
65 _RL QSWI (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
66 C
67 _RL HCORR (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
68 C SEAICE_SALT contains m of ice melted (<0) or created (>0)
69 _RL SEAICE_SALT(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
70 C actual ice thickness
71 _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
72 C actual snow thickness
73 _RL hSnwLoc(1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
74 C wind speed
75 _RL UG (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
76 _RL SPEED_SQ
77
78 #ifdef SEAICE_MULTILEVEL
79 INTEGER it
80 INTEGER ilockey
81 _RL RK
82 _RL HICEP(1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
83 _RL FICEP(1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
84 #endif
85
86 C number of surface interface layer
87 INTEGER kSurface
88
89 if ( buoyancyRelation .eq. 'OCEANICP' ) then
90 kSurface = Nr
91 else
92 kSurface = 1
93 endif
94
95 salinity_ice=4.0 _d 0 ! ICE SALINITY (g/kg)
96 TBC=SEAICE_freeze ! FREEZING TEMP. OF SEA WATER (deg C)
97 SDF=1000.0 _d 0/330.0 _d 0 ! RATIO OF WATER DESITY TO SNOW DENSITY
98 ICE_DENS=0.920 _d 0 ! RATIO OF SEA ICE DESITY TO WATER DENSITY
99 Q0=1.0D-06/302.0 _d +00 ! INVERSE HEAT OF FUSION OF ICE (m^3/J)
100 QS=1.1 _d +08 ! HEAT OF FUSION OF SNOW (J/m^3)
101
102 DO bj=myByLo(myThid),myByHi(myThid)
103 DO bi=myBxLo(myThid),myBxHi(myThid)
104 c
105 cph(
106 #ifdef ALLOW_AUTODIFF_TAMC
107 act1 = bi - myBxLo(myThid)
108 max1 = myBxHi(myThid) - myBxLo(myThid) + 1
109 act2 = bj - myByLo(myThid)
110 max2 = myByHi(myThid) - myByLo(myThid) + 1
111 act3 = myThid - 1
112 max3 = nTx*nTy
113 act4 = ikey_dynamics - 1
114 iicekey = (act1 + 1) + act2*max1
115 & + act3*max1*max2
116 & + act4*max1*max2*max3
117 #endif /* ALLOW_AUTODIFF_TAMC */
118 C
119 C initialise a few fields
120 C
121 DO J=1,sNy
122 DO I=1,sNx
123 AREA(I,J,3,bi,bj) = MAX(A22,AREA(I,J,2,bi,bj))
124 HICE(I,J) = HEFF(I,J,2,bi,bj)/AREA(I,J,3,bi,bj)
125 hSnwLoc(I,J) = HSNOW(I,J,bi,bj)/AREA(I,J,3,bi,bj)
126 FHEFF(I,J) = 0.0 _d 0
127 FICE (I,J) = 0.0 _d 0
128 #ifdef SEAICE_MULTILEVEL
129 FICEP(I,J) = 0.0 _d 0
130 #endif
131 FHEFF(I,J) = 0.0 _d 0
132 FICE (I,J) = 0.0 _d 0
133 QNETO(I,J) = 0.0 _d 0
134 QNETI(I,J) = 0.0 _d 0
135 QSWO (I,J) = 0.0 _d 0
136 QSWI (I,J) = 0.0 _d 0
137 HCORR(I,J) = 0.0 _d 0
138 SEAICE_SALT(I,J) = 0.0 _d 0
139 RESID_HEAT (I,J) = 0.0 _d 0
140 ENDDO
141 ENDDO
142 #ifdef ALLOW_AUTODIFF_TAMC
143 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
144 CADJ & key = iicekey, byte = isbyte
145 #endif /* ALLOW_AUTODIFF_TAMC */
146
147 C NOW DETERMINE MIXED LAYER TEMPERATURE
148 DO J=1,sNy
149 DO I=1,sNx
150 TMIX(I,J,bi,bj)=theta(I,J,kSurface,bi,bj)+273.16 _d +00
151 #ifdef SEAICE_DEBUG
152 TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00)
153 #endif
154 ENDDO
155 ENDDO
156
157 C THERMAL WIND OF ATMOSPHERE
158 DO J=1,sNy
159 DO I=1,sNx
160 CML#ifdef SEAICE_EXTERNAL_FORCING
161 CMLC this seems to be more natural as we do compute the wind speed in
162 CMLC pkg/exf/exf_wind.F, but it changes the results
163 CML UG(I,J) = MAX(SEAICE_EPS,wspeed(I,J,bi,bj))
164 CML#else
165 SPEED_SQ = UWIND(I,J,bi,bj)**2 + VWIND(I,J,bi,bj)**2
166 IF ( SPEED_SQ .LE. SEAICE_EPS_SQ ) THEN
167 UG(I,J)=SEAICE_EPS
168 ELSE
169 UG(I,J)=SQRT(SPEED_SQ)
170 ENDIF
171 CML#endif /* SEAICE_EXTERNAL_FORCING */
172 ENDDO
173 ENDDO
174
175 #ifdef ALLOW_AUTODIFF_TAMC
176 CADJ STORE theta(:,:,:,bi,bj)= comlev1_bibj,
177 CADJ & key = iicekey, byte = isbyte
178 CADJ STORE heff(:,:,:,bi,bj) = comlev1_bibj,
179 CADJ & key = iicekey, byte = isbyte
180 #endif /* ALLOW_AUTODIFF_TAMC */
181 DO J=1,sNy
182 DO I=1,sNx
183 C-- Create or melt sea-ice so that first-level oceanic temperature
184 C is approximately at the freezing point when there is sea-ice.
185 C Initially the units of YNEG are m of sea-ice.
186 C The factor dRf(1)/72.0764, used to convert temperature
187 C change in deg K to m of sea-ice, is approximately:
188 C dRf(1) * (sea water heat capacity = 3996 J/kg/K)
189 C * (density of sea-water = 1026 kg/m^3)
190 C / (latent heat of fusion of sea-ice = 334000 J/kg)
191 C / (density of sea-ice = 910 kg/m^3)
192 C Negative YNEG leads to ice growth.
193 C Positive YNEG leads to ice melting.
194 if ( .NOT. inAdMode ) then
195 #ifdef SEAICE_VARIABLE_FREEZING_POINT
196 TBC = -0.0575 _d 0*salt(I,J,kSurface,bi,bj) + 0.0901 _d 0
197 #endif /* SEAICE_VARIABLE_FREEZING_POINT */
198 YNEG(I,J,bi,bj)=(theta(I,J,kSurface,bi,bj)-TBC)
199 & *dRf(1)/72.0764 _d 0
200 else
201 YNEG(I,J,bi,bj)= 0.
202 endif
203 GHEFF(I,J)=HEFF(I,J,1,bi,bj)
204 C Melt (YNEG>0) or create (YNEG<0) sea ice
205 HEFF(I,J,1,bi,bj)=MAX(ZERO,HEFF(I,J,1,bi,bj)-YNEG(I,J,bi,bj))
206 RESID_HEAT(I,J) =YNEG(I,J,bi,bj)
207 YNEG(I,J,bi,bj) =GHEFF(I,J)-HEFF(I,J,1,bi,bj)
208 SEAICE_SALT(I,J) =SEAICE_SALT(I,J)-YNEG(I,J,bi,bj)
209 RESID_HEAT(I,J) =RESID_HEAT(I,J)-YNEG(I,J,bi,bj)
210 C YNEG now contains m of ice melted (>0) or created (<0)
211 C SEAICE_SALT contains m of ice melted (<0) or created (>0)
212 C RESID_HEAT is residual heat above freezing in equivalent m of ice
213 ENDDO
214 ENDDO
215
216 cph(
217 #ifdef ALLOW_AUTODIFF_TAMC
218 CADJ STORE heff = comlev1, key = ikey_dynamics
219 CADJ STORE hsnow = comlev1, key = ikey_dynamics
220 CADJ STORE tice = comlev1, key = ikey_dynamics
221 CADJ STORE uwind = comlev1, key = ikey_dynamics
222 CADJ STORE vwind = comlev1, key = ikey_dynamics
223 # ifdef SEAICE_MULTILEVEL
224 CADJ STORE tices = comlev1, key = ikey_dynamics
225 # endif
226 #endif /* ALLOW_AUTODIFF_TAMC */
227 cph)
228
229 C GROWTH SUBROUTINE CALCULATES TOTAL GROWTH TENDENCIES,
230 C INCLUDING SNOWFALL
231 CML beginning of groatb code
232
233 C NOW DETERMINE GROWTH RATES
234 C FIRST DO OPEN WATER
235 CALL SEAICE_BUDGET_OCEAN(
236 I UG,
237 U TMIX,
238 O QNETO, QSWO,
239 I bi, bj)
240
241 C NOW DO ICE
242 #ifdef SEAICE_MULTILEVEL
243 C-- Start loop over muli-levels
244 DO IT=1,MULTDIM
245 #ifdef ALLOW_AUTODIFF_TAMC
246 ilockey = (iicekey-1)*MULTDIM + IT
247 CADJ STORE tices(:,:,it,bi,bj) = comlev1_multdim,
248 CADJ & key = ilockey, byte = isbyte
249 #endif /* ALLOW_AUTODIFF_TAMC */
250 DO J=1,sNy
251 DO I=1,sNx
252 RK=IT*1.0
253 HICEP(I,J)=(HICE(I,J)/7.0 _d 0)*((2.0 _d 0*RK)-1.0 _d 0)
254 TICE(I,J,bi,bj)=TICES(I,J,IT,bi,bj)
255 ENDDO
256 ENDDO
257 CALL SEAICE_BUDGET_ICE(
258 I UG, HICE, hSnwLoc,
259 U TICE,
260 O FICE, QSWI,
261 I bi, bj)
262 DO J=1,sNy
263 DO I=1,sNx
264 FICEP(I,J)=(FICE(I,J)/7.0 _d 0)+FICEP(I,J)
265 TICES(I,J,IT,bi,bj)=TICE(I,J,bi,bj)
266 ENDDO
267 ENDDO
268 ENDDO
269 C-- End loop over muli-levels
270 DO J=1,sNy
271 DO I=1,sNx
272 FICE(I,J)=FICEP(I,J)
273 ENDDO
274 ENDDO
275 #else /* SEAICE_MULTILEVEL */
276 CALL SEAICE_BUDGET_ICE(
277 I UG, HICE, hSnwLoc,
278 U TICE,
279 O FICE, QSWI,
280 I bi, bj)
281 #endif /* SEAICE_MULTILEVEL */
282 CML end of groatb code
283
284 cph(
285 #ifdef ALLOW_AUTODIFF_TAMC
286 cphCADJ STORE heff = comlev1, key = ikey_dynamics
287 cphCADJ STORE hsnow = comlev1, key = ikey_dynamics
288 #endif
289 cph)
290 c
291 #ifdef ALLOW_AUTODIFF_TAMC
292 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
293 CADJ & key = iicekey, byte = isbyte
294 CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj,
295 CADJ & key = iicekey, byte = isbyte
296 CADJ STORE fice(:,:,bi,bj) = comlev1_bibj,
297 CADJ & key = iicekey, byte = isbyte
298 #endif /* ALLOW_AUTODIFF_TAMC */
299 cph)
300
301 DO J=1,sNy
302 DO I=1,sNx
303 C NOW CALCULATE CORRECTED GROWTH
304 GHEFF(I,J)=-SEAICE_deltaTtherm*FICE(I,J)
305 & *AREA(I,J,2,bi,bj) ! effective growth in J/m^2 (>0=melt)
306 ENDDO
307 ENDDO
308 #ifdef ALLOW_AUTODIFF_TAMC
309 CADJ STORE fice(:,:) = comlev1_bibj,
310 CADJ & key = iicekey, byte = isbyte
311 #endif /* ALLOW_AUTODIFF_TAMC */
312
313 DO J=1,sNy
314 DO I=1,sNx
315
316 IF(FICE(I,J).LT.ZERO.AND.AREA(I,J,2,bi,bj).GT.ZERO) THEN
317 C use FICE to melt snow and CALCULATE CORRECTED GROWTH
318 GAREA(I,J)=HSNOW(I,J,bi,bj)*QS ! effective snow thickness in J/m^2
319 IF(GHEFF(I,J).LE.GAREA(I,J)) THEN
320 C not enough heat to melt all snow; use up all heat flux FICE
321 HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)-GHEFF(I,J)/QS
322 C SNOW CONVERTED INTO WATER AND THEN INTO equivalent m of ICE melt
323 C The factor 1/SDF/ICE_DENS converts m of snow to m of sea-ice
324 SEAICE_SALT(I,J)=SEAICE_SALT(I,J)
325 & -GHEFF(I,J)/QS/SDF/ICE_DENS
326 FICE(I,J)=ZERO
327 ELSE
328 C enought heat to melt snow completely;
329 C compute remaining heat flux that will melt ice
330 FICE(I,J)=-(GHEFF(I,J)-GAREA(I,J))/
331 & SEAICE_deltaTtherm/AREA(I,J,2,bi,bj)
332 C convert all snow to melt water (fresh water flux)
333 SEAICE_SALT(I,J)=SEAICE_SALT(I,J)
334 & -HSNOW(I,J,bi,bj)/SDF/ICE_DENS
335 HSNOW(I,J,bi,bj)=0.0
336 END IF
337 END IF
338
339 C NOW GET TOTAL GROWTH RATE in W/m^2, >0 causes ice growth
340 FHEFF(I,J)= FICE(I,J) * AREA(I,J,2,bi,bj)
341 & + QNETO(I,J) * (ONE-AREA(I,J,2,bi,bj))
342
343 ENDDO
344 ENDDO
345 cph(
346 #ifdef ALLOW_AUTODIFF_TAMC
347 CADJ STORE heff(:,:,:,bi,bj) = comlev1_bibj,
348 CADJ & key = iicekey, byte = isbyte
349 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
350 CADJ & key = iicekey, byte = isbyte
351 CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj,
352 CADJ & key = iicekey, byte = isbyte
353 CADJ STORE fice(:,:) = comlev1_bibj,
354 CADJ & key = iicekey, byte = isbyte
355 CADJ STORE fheff(:,:) = comlev1_bibj,
356 CADJ & key = iicekey, byte = isbyte
357 CADJ STORE qneto(:,:) = comlev1_bibj,
358 CADJ & key = iicekey, byte = isbyte
359 CADJ STORE qswi(:,:) = comlev1_bibj,
360 CADJ & key = iicekey, byte = isbyte
361 CADJ STORE qswo(:,:) = comlev1_bibj,
362 CADJ & key = iicekey, byte = isbyte
363 #endif /* ALLOW_AUTODIFF_TAMC */
364 cph)
365 DO J=1,sNy
366 DO I=1,sNx
367 C NOW UPDATE AREA
368 GHEFF(I,J)=-SEAICE_deltaTtherm*FHEFF(I,J)*Q0
369 GAREA(I,J)=SEAICE_deltaTtherm*QNETO(I,J)*Q0
370 GHEFF(I,J)=-ONE*MIN(HEFF(I,J,1,bi,bj),GHEFF(I,J))
371 GAREA(I,J)=MAX(ZERO,GAREA(I,J))
372 HCORR(I,J)=MIN(ZERO,GHEFF(I,J))
373 ENDDO
374 ENDDO
375 #ifdef ALLOW_AUTODIFF_TAMC
376 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
377 CADJ & key = iicekey, byte = isbyte
378 #endif
379 DO J=1,sNy
380 DO I=1,sNx
381 GAREA(I,J)=(ONE-AREA(I,J,2,bi,bj))*GAREA(I,J)/HO
382 & +HALF*HCORR(I,J)*AREA(I,J,2,bi,bj)
383 & /(HEFF(I,J,1,bi,bj)+.00001 _d 0)
384 AREA(I,J,1,bi,bj)=AREA(I,J,1,bi,bj)+GAREA(I,J)
385 ENDDO
386 ENDDO
387 #ifdef ALLOW_AUTODIFF_TAMC
388 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
389 CADJ & key = iicekey, byte = isbyte
390 CADJ STORE garea(:,:) = comlev1_bibj,
391 CADJ & key = iicekey, byte = isbyte
392 #endif
393 DO J=1,sNy
394 DO I=1,sNx
395
396 C NOW UPDATE HEFF
397 GHEFF(I,J)=-SEAICE_deltaTtherm*
398 & FICE(I,J)*Q0*AREA(I,J,2,bi,bj)
399 GHEFF(I,J)=-ONE*MIN(HEFF(I,J,1,bi,bj),GHEFF(I,J))
400 HEFF(I,J,1,bi,bj)=HEFF(I,J,1,bi,bj)+GHEFF(I,J)
401 SEAICE_SALT(I,J)=SEAICE_SALT(I,J)+GHEFF(I,J)
402
403 C NOW CALCULATE QNETI UNDER ICE IF ANY
404 QNETI(I,J)=(GHEFF(I,J)-SEAICE_deltaTtherm*
405 & FICE(I,J)*Q0*AREA(I,J,2,bi,bj))/Q0/SEAICE_deltaTtherm
406
407 C NOW UPDATE OTHER THINGS
408
409 IF(FICE(I,J).GT.ZERO) THEN
410 C FREEZING, PRECIP ADDED AS SNOW
411 HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)+SEAICE_deltaTtherm*
412 & PRECIP(I,J,bi,bj)*AREA(I,J,2,bi,bj)*SDF
413 ELSE
414 C ADD PRECIP AS RAIN, WATER CONVERTED INTO equivalent m of ICE BY 1/ICE_DENS
415 SEAICE_SALT(I,J)=SEAICE_SALT(I,J)
416 & -PRECIP(I,J,bi,bj)*AREA(I,J,2,bi,bj)*
417 & SEAICE_deltaTtherm/ICE_DENS
418 ENDIF
419
420 C Now add in precip over open water directly into ocean as negative salt
421 SEAICE_SALT(I,J)=SEAICE_SALT(I,J)
422 & -PRECIP(I,J,bi,bj)*(ONE-AREA(I,J,2,bi,bj))
423 & *SEAICE_deltaTtherm/ICE_DENS
424
425 C Now melt snow if there is residual heat left in surface level
426 C Note that units of YNEG and SEAICE_SALT are m of ice
427 IF(RESID_HEAT(I,J).GT.ZERO.AND.
428 & HSNOW(I,J,bi,bj).GT.ZERO) THEN
429 GHEFF(I,J)=MIN(HSNOW(I,J,bi,bj)/SDF/ICE_DENS,
430 & RESID_HEAT(I,J))
431 YNEG(I,J,bi,bj)=YNEG(I,J,bi,bj)+GHEFF(I,J)
432 HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)-GHEFF(I,J)*SDF*ICE_DENS
433 SEAICE_SALT(I,J)=SEAICE_SALT(I,J)-GHEFF(I,J)
434 ENDIF
435
436 C NOW GET FRESH WATER FLUX
437 EmPmR(I,J,bi,bj)= maskC(I,J,kSurface,bi,bj)*(
438 & EVAP(I,J,bi,bj)*(ONE-AREA(I,J,2,bi,bj))
439 & -RUNOFF(I,J,bi,bj)
440 & +SEAICE_SALT(I,J)*ICE_DENS/SEAICE_deltaTtherm
441 & )
442
443 C NOW GET TOTAL QNET AND QSW
444 QNET(I,J,bi,bj)=QNETI(I,J) *AREA(I,J,2,bi,bj)
445 & +QNETO(I,J) *(ONE-AREA(I,J,2,bi,bj))
446 QSW(I,J,bi,bj) =QSWI(I,J) *AREA(I,J,2,bi,bj)
447 & +QSWO(I,J) *(ONE-AREA(I,J,2,bi,bj))
448 c #ifndef SHORTWAVE_HEATING
449 c QNET(I,J,bi,bj)=QNET(I,J,bi,bj)+QSW(I,J,bi,bj)
450 c #endif
451
452 C Now convert YNEG back to deg K.
453 YNEG(I,J,bi,bj)=YNEG(I,J,bi,bj)*recip_dRf(1)*72.0764 _d 0
454
455 C Add YNEG contribution to QNET
456 QNET(I,J,bi,bj)=QNET(I,J,bi,bj)
457 & +YNEG(I,J,bi,bj)/SEAICE_deltaTtherm
458 & *maskC(I,J,kSurface,bi,bj)
459 & *HeatCapacity_Cp*recip_horiVertRatio*rhoConst
460 & *drF(kSurface)*hFacC(i,j,kSurface,bi,bj)
461
462 ENDDO
463 ENDDO
464
465 #ifdef SEAICE_DEBUG
466 c CALL PLOT_FIELD_XYRS( UWIND,'Current UWIND ', myIter, myThid )
467 c CALL PLOT_FIELD_XYRS( VWIND,'Current VWIND ', myIter, myThid )
468 CALL PLOT_FIELD_XYRS( GWATX,'Current GWATX ', myIter, myThid )
469 CALL PLOT_FIELD_XYRS( GWATY,'Current GWATY ', myIter, myThid )
470 CML CALL PLOT_FIELD_XYRL( FO,'Current FO ', myIter, myThid )
471 CML CALL PLOT_FIELD_XYRL( FHEFF,'Current FHEFF ', myIter, myThid )
472 CALL PLOT_FIELD_XYRL( QSW,'Current QSW ', myIter, myThid )
473 CALL PLOT_FIELD_XYRL( QNET,'Current QNET ', myIter, myThid )
474 CALL PLOT_FIELD_XYRL( EmPmR,'Current EmPmR ', myIter, myThid )
475 DO j=1-OLy,sNy+OLy
476 DO i=1-OLx,sNx+OLx
477 GHEFF(I,J)=SQRT(UICE(I,J,1,bi,bj)**2+VICE(I,J,1,bi,bj)**2)
478 GAREA(I,J)=HEFF(I,J,1,bi,bj)
479 print*,'I J QNET:',I, J, QNET(i,j,bi,bj), QSW(I,J,bi,bj)
480 ENDDO
481 ENDDO
482 CALL PLOT_FIELD_XYRL( GHEFF,'Current UICE ', myIter, myThid )
483 CALL PLOT_FIELD_XYRL( GAREA,'Current HEFF ', myIter, myThid )
484 DO j=1-OLy,sNy+OLy
485 DO i=1-OLx,sNx+OLx
486 if(HEFF(i,j,1,bi,bj).gt.1.) then
487 print '(A,2i4,3f10.2)','#### i j heff theta yneg',i,j,
488 & HEFF(i,j,1,bi,bj),theta(I,J,1,bi,bj),yneg(I,J,bi,bj)
489 print '(A,3f10.2)','QSW, QNET before/after correction',
490 & QSW(I,J,bi,bj),QNETI(I,J)*AREA(I,J,2,bi,bj)+
491 & (ONE-AREA(I,J,2,bi,bj))*QNETO(I,J), QNET(I,J,bi,bj)
492 endif
493 ENDDO
494 ENDDO
495 #endif /* SEAICE_DEBUG */
496
497 crg Added by Ralf Giering: do we need DO_WE_NEED_THIS ?
498 #define DO_WE_NEED_THIS
499 C NOW ZERO OUTSIDE POINTS
500 #ifdef ALLOW_AUTODIFF_TAMC
501 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
502 CADJ & key = iicekey, byte = isbyte
503 CADJ STORE heff(:,:,:,bi,bj) = comlev1_bibj,
504 CADJ & key = iicekey, byte = isbyte
505 #endif /* ALLOW_AUTODIFF_TAMC */
506 DO J=1,sNy
507 DO I=1,sNx
508 C NOW SET AREA(I,J,1,bi,bj)=0 WHERE NO ICE IS
509 AREA(I,J,1,bi,bj)=MIN(AREA(I,J,1,bi,bj)
510 & ,HEFF(I,J,1,bi,bj)/.0001 _d 0)
511 ENDDO
512 ENDDO
513 #ifdef ALLOW_AUTODIFF_TAMC
514 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
515 CADJ & key = iicekey, byte = isbyte
516 #endif /* ALLOW_AUTODIFF_TAMC */
517 DO J=1,sNy
518 DO I=1,sNx
519 C NOW TRUNCATE AREA
520 #ifdef DO_WE_NEED_THIS
521 AREA(I,J,1,bi,bj)=MIN(ONE,AREA(I,J,1,bi,bj))
522 ENDDO
523 ENDDO
524 #ifdef ALLOW_AUTODIFF_TAMC
525 CADJ STORE area(:,:,:,bi,bj) = comlev1_bibj,
526 CADJ & key = iicekey, byte = isbyte
527 CADJ STORE hsnow(:,:,bi,bj) = comlev1_bibj,
528 CADJ & key = iicekey, byte = isbyte
529 #endif /* ALLOW_AUTODIFF_TAMC */
530 DO J=1,sNy
531 DO I=1,sNx
532 AREA(I,J,1,bi,bj)=MAX(ZERO,AREA(I,J,1,bi,bj))
533 HSNOW(I,J,bi,bj)=MAX(ZERO,HSNOW(I,J,bi,bj))
534 #endif
535 AREA(I,J,1,bi,bj)=AREA(I,J,1,bi,bj)*HEFFM(I,J,bi,bj)
536 HEFF(I,J,1,bi,bj)=HEFF(I,J,1,bi,bj)*HEFFM(I,J,bi,bj)
537 #ifdef DO_WE_NEED_THIS
538 c HEFF(I,J,1,bi,bj)=MIN(MAX_HEFF,HEFF(I,J,1,bi,bj))
539 #endif
540 HSNOW(I,J,bi,bj)=HSNOW(I,J,bi,bj)*HEFFM(I,J,bi,bj)
541 ENDDO
542 ENDDO
543
544 #ifdef ALLOW_SEAICE_FLOODING
545 IF ( SEAICEuseFlooding ) THEN
546 C convert snow to ice if submerged
547 DO J=1,sNy
548 DO I=1,sNx
549 hDraft = (HSNOW(I,J,bi,bj)*330. _d 0
550 & +HEFF(I,J,1,bi,bj)*SEAICE_rhoIce)/1000. _d 0
551 hFlood = hDraft - MIN(hDraft,HEFF(I,J,1,bi,bj))
552 HEFF(I,J,1,bi,bj) = HEFF(I,J,1,bi,bj) + hFlood
553 HSNOW(I,J,bi,bj) = MAX(0. _d 0,HSNOW(I,J,bi,bj)-hFlood/SDF)
554 ENDDO
555 ENDDO
556 ENDIF
557 #endif /* ALLOW_SEAICE_FLOODING */
558
559 #ifdef ATMOSPHERIC_LOADING
560 IF ( useRealFreshWaterFlux ) THEN
561 DO J=1,sNy
562 DO I=1,sNx
563 sIceLoad(i,j,bi,bj) = HEFF(I,J,1,bi,bj)*SEAICE_rhoIce
564 & + HSNOW(I,J,bi,bj)* 330. _d 0
565 ENDDO
566 ENDDO
567 ENDIF
568 #endif
569
570 ENDDO
571 ENDDO
572
573 RETURN
574 END

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