/[MITgcm]/MITgcm/model/src/dynamics.F
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Revision 1.76 - (hide annotations) (download)
Mon Aug 13 18:05:26 2001 UTC (22 years, 9 months ago) by heimbach
Branch: MAIN
CVS Tags: checkpoint40pre6
Changes since 1.75: +76 -27 lines
Modifications related to split into thermodynamics.F, dynamics.F
o missing initialisations in dynamics.F added
o some fields no longer needed in dynamics/thermodynamics deleted
o split of calc_diffusivity.F into calc_viscosity.F
  (plus split of kpp_calc_diff.F into kpp_calc_visc.F)
o Modifications of some store directives for TAF

1 heimbach 1.76 C $Header: /u/gcmpack/models/MITgcmUV/model/src/dynamics.F,v 1.75 2001/08/03 19:06:11 adcroft Exp $
2 adcroft 1.73 C $Name: $
3 cnh 1.1
4 adcroft 1.24 #include "CPP_OPTIONS.h"
5 cnh 1.1
6 cnh 1.8 SUBROUTINE DYNAMICS(myTime, myIter, myThid)
7 cnh 1.1 C /==========================================================\
8     C | SUBROUTINE DYNAMICS |
9     C | o Controlling routine for the explicit part of the model |
10     C | dynamics. |
11     C |==========================================================|
12     C | This routine evaluates the "dynamics" terms for each |
13     C | block of ocean in turn. Because the blocks of ocean have |
14     C | overlap regions they are independent of one another. |
15     C | If terms involving lateral integrals are needed in this |
16     C | routine care will be needed. Similarly finite-difference |
17     C | operations with stencils wider than the overlap region |
18     C | require special consideration. |
19     C | Notes |
20     C | ===== |
21     C | C*P* comments indicating place holders for which code is |
22     C | presently being developed. |
23     C \==========================================================/
24 adcroft 1.40 IMPLICIT NONE
25 cnh 1.1
26     C == Global variables ===
27     #include "SIZE.h"
28     #include "EEPARAMS.h"
29 adcroft 1.6 #include "PARAMS.h"
30 adcroft 1.3 #include "DYNVARS.h"
31 adcroft 1.42 #include "GRID.h"
32 heimbach 1.74 #ifdef ALLOW_PASSIVE_TRACER
33 heimbach 1.72 #include "TR1.h"
34 heimbach 1.74 #endif
35 heimbach 1.49
36     #ifdef ALLOW_AUTODIFF_TAMC
37 heimbach 1.53 # include "tamc.h"
38     # include "tamc_keys.h"
39 heimbach 1.67 # include "FFIELDS.h"
40     # ifdef ALLOW_KPP
41     # include "KPP.h"
42     # endif
43     # ifdef ALLOW_GMREDI
44     # include "GMREDI.h"
45     # endif
46 heimbach 1.53 #endif /* ALLOW_AUTODIFF_TAMC */
47 heimbach 1.49
48 jmc 1.64 #ifdef ALLOW_TIMEAVE
49     #include "TIMEAVE_STATV.h"
50 jmc 1.62 #endif
51    
52 cnh 1.1 C == Routine arguments ==
53 cnh 1.8 C myTime - Current time in simulation
54     C myIter - Current iteration number in simulation
55 cnh 1.1 C myThid - Thread number for this instance of the routine.
56 cnh 1.8 _RL myTime
57     INTEGER myIter
58 adcroft 1.47 INTEGER myThid
59 cnh 1.1
60     C == Local variables
61 adcroft 1.68 C maskUp o maskUp: land/water mask for W points
62 adcroft 1.58 C fVer[STUV] o fVer: Vertical flux term - note fVer
63 cnh 1.1 C is "pipelined" in the vertical
64     C so we need an fVer for each
65     C variable.
66 adcroft 1.58 C rhoK, rhoKM1 - Density at current level, and level above
67 cnh 1.31 C phiHyd - Hydrostatic part of the potential phiHydi.
68 cnh 1.38 C In z coords phiHydiHyd is the hydrostatic
69 jmc 1.65 C Potential (=pressure/rho0) anomaly
70 cnh 1.38 C In p coords phiHydiHyd is the geopotential
71 jmc 1.65 C surface height anomaly.
72 jmc 1.63 C phiSurfX, - gradient of Surface potentiel (Pressure/rho, ocean)
73     C phiSurfY or geopotentiel (atmos) in X and Y direction
74 cnh 1.30 C iMin, iMax - Ranges and sub-block indices on which calculations
75     C jMin, jMax are applied.
76 cnh 1.1 C bi, bj
77 heimbach 1.53 C k, kup, - Index for layer above and below. kup and kDown
78     C kDown, km1 are switched with layer to be the appropriate
79 cnh 1.38 C index into fVerTerm.
80 adcroft 1.68 C tauAB - Adams-Bashforth timestepping weight: 0=forward ; 1/2=Adams-Bashf.
81 cnh 1.30 _RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
82     _RL fVerU (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
83     _RL fVerV (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
84 cnh 1.31 _RL phiHyd (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
85 cnh 1.30 _RL rhokm1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
86     _RL rhok (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
87 jmc 1.63 _RL phiSurfX(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
88     _RL phiSurfY(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
89 adcroft 1.42 _RL KappaRU (1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr)
90     _RL KappaRV (1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr)
91 adcroft 1.50 _RL sigmaX (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
92     _RL sigmaY (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
93     _RL sigmaR (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
94 adcroft 1.68 _RL tauAB
95 adcroft 1.12
96 jmc 1.62 C This is currently used by IVDC and Diagnostics
97 adcroft 1.45 _RL ConvectCount (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
98    
99 cnh 1.1 INTEGER iMin, iMax
100     INTEGER jMin, jMax
101     INTEGER bi, bj
102     INTEGER i, j
103 heimbach 1.53 INTEGER k, km1, kup, kDown
104 cnh 1.1
105 jmc 1.62 Cjmc : add for phiHyd output <- but not working if multi tile per CPU
106     c CHARACTER*(MAX_LEN_MBUF) suff
107     c LOGICAL DIFFERENT_MULTIPLE
108     c EXTERNAL DIFFERENT_MULTIPLE
109     Cjmc(end)
110    
111 adcroft 1.11 C--- The algorithm...
112     C
113     C "Correction Step"
114     C =================
115     C Here we update the horizontal velocities with the surface
116     C pressure such that the resulting flow is either consistent
117     C with the free-surface evolution or the rigid-lid:
118     C U[n] = U* + dt x d/dx P
119     C V[n] = V* + dt x d/dy P
120     C
121     C "Calculation of Gs"
122     C ===================
123     C This is where all the accelerations and tendencies (ie.
124 heimbach 1.53 C physics, parameterizations etc...) are calculated
125 adcroft 1.11 C rho = rho ( theta[n], salt[n] )
126 cnh 1.27 C b = b(rho, theta)
127 adcroft 1.11 C K31 = K31 ( rho )
128 jmc 1.61 C Gu[n] = Gu( u[n], v[n], wVel, b, ... )
129     C Gv[n] = Gv( u[n], v[n], wVel, b, ... )
130     C Gt[n] = Gt( theta[n], u[n], v[n], wVel, K31, ... )
131     C Gs[n] = Gs( salt[n], u[n], v[n], wVel, K31, ... )
132 adcroft 1.11 C
133 adcroft 1.12 C "Time-stepping" or "Prediction"
134 adcroft 1.11 C ================================
135     C The models variables are stepped forward with the appropriate
136     C time-stepping scheme (currently we use Adams-Bashforth II)
137     C - For momentum, the result is always *only* a "prediction"
138     C in that the flow may be divergent and will be "corrected"
139     C later with a surface pressure gradient.
140     C - Normally for tracers the result is the new field at time
141     C level [n+1} *BUT* in the case of implicit diffusion the result
142     C is also *only* a prediction.
143     C - We denote "predictors" with an asterisk (*).
144     C U* = U[n] + dt x ( 3/2 Gu[n] - 1/2 Gu[n-1] )
145     C V* = V[n] + dt x ( 3/2 Gv[n] - 1/2 Gv[n-1] )
146     C theta[n+1] = theta[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
147     C salt[n+1] = salt[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
148 adcroft 1.12 C With implicit diffusion:
149 adcroft 1.11 C theta* = theta[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
150     C salt* = salt[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
151 adcroft 1.12 C (1 + dt * K * d_zz) theta[n] = theta*
152     C (1 + dt * K * d_zz) salt[n] = salt*
153 adcroft 1.11 C---
154    
155 heimbach 1.76 C-- Set up work arrays with valid (i.e. not NaN) values
156     C These inital values do not alter the numerical results. They
157     C just ensure that all memory references are to valid floating
158     C point numbers. This prevents spurious hardware signals due to
159     C uninitialised but inert locations.
160     DO j=1-OLy,sNy+OLy
161     DO i=1-OLx,sNx+OLx
162     DO k=1,Nr
163     phiHyd(i,j,k) = 0. _d 0
164     KappaRU(i,j,k) = 0. _d 0
165     KappaRV(i,j,k) = 0. _d 0
166     sigmaX(i,j,k) = 0. _d 0
167     sigmaY(i,j,k) = 0. _d 0
168     sigmaR(i,j,k) = 0. _d 0
169     ENDDO
170     rhoKM1 (i,j) = 0. _d 0
171     rhok (i,j) = 0. _d 0
172     phiSurfX(i,j) = 0. _d 0
173     phiSurfY(i,j) = 0. _d 0
174     ENDDO
175     ENDDO
176    
177     #ifdef ALLOW_AUTODIFF_TAMC
178     C-- HPF directive to help TAMC
179     CHPF$ INDEPENDENT
180     #endif /* ALLOW_AUTODIFF_TAMC */
181    
182 cnh 1.1 DO bj=myByLo(myThid),myByHi(myThid)
183 heimbach 1.76
184     #ifdef ALLOW_AUTODIFF_TAMC
185     C-- HPF directive to help TAMC
186     CHPF$ INDEPENDENT, NEW (fVerU,fVerV
187     CHPF$& ,phiHyd
188     CHPF$& ,KappaRU,KappaRV
189     CHPF$& )
190     #endif /* ALLOW_AUTODIFF_TAMC */
191    
192 cnh 1.1 DO bi=myBxLo(myThid),myBxHi(myThid)
193 heimbach 1.76
194     #ifdef ALLOW_AUTODIFF_TAMC
195     act1 = bi - myBxLo(myThid)
196     max1 = myBxHi(myThid) - myBxLo(myThid) + 1
197    
198     act2 = bj - myByLo(myThid)
199     max2 = myByHi(myThid) - myByLo(myThid) + 1
200    
201     act3 = myThid - 1
202     max3 = nTx*nTy
203    
204     act4 = ikey_dynamics - 1
205    
206     ikey = (act1 + 1) + act2*max1
207     & + act3*max1*max2
208     & + act4*max1*max2*max3
209     #endif /* ALLOW_AUTODIFF_TAMC */
210    
211     C-- Set up work arrays that need valid initial values
212     DO j=1-OLy,sNy+OLy
213     DO i=1-OLx,sNx+OLx
214     fVerU (i,j,1) = 0. _d 0
215     fVerU (i,j,2) = 0. _d 0
216     fVerV (i,j,1) = 0. _d 0
217     fVerV (i,j,2) = 0. _d 0
218     ENDDO
219     ENDDO
220 heimbach 1.49
221 jmc 1.63 C-- Start computation of dynamics
222     iMin = 1-OLx+2
223     iMax = sNx+OLx-1
224     jMin = 1-OLy+2
225     jMax = sNy+OLy-1
226    
227 heimbach 1.76 #ifdef ALLOW_AUTODIFF_TAMC
228     CADJ STORE uvel (:,:,:,bi,bj) = comlev1_bibj, key = ikey, byte = isbyte
229     CADJ STORE vvel (:,:,:,bi,bj) = comlev1_bibj, key = ikey, byte = isbyte
230     CADJ STORE wvel (:,:,:,bi,bj) = comlev1_bibj, key = ikey, byte = isbyte
231     #endif /* ALLOW_AUTODIFF_TAMC */
232    
233 jmc 1.65 C-- Explicit part of the Surface Potentiel Gradient (add in TIMESTEP)
234 jmc 1.63 C (note: this loop will be replaced by CALL CALC_GRAD_ETA)
235     IF (implicSurfPress.NE.1.) THEN
236 jmc 1.65 CALL CALC_GRAD_PHI_SURF(
237     I bi,bj,iMin,iMax,jMin,jMax,
238     I etaN,
239     O phiSurfX,phiSurfY,
240     I myThid )
241 jmc 1.63 ENDIF
242 adcroft 1.58
243     C-- Start of dynamics loop
244     DO k=1,Nr
245    
246     C-- km1 Points to level above k (=k-1)
247     C-- kup Cycles through 1,2 to point to layer above
248     C-- kDown Cycles through 2,1 to point to current layer
249    
250     km1 = MAX(1,k-1)
251     kup = 1+MOD(k+1,2)
252     kDown= 1+MOD(k,2)
253    
254 heimbach 1.76 #ifdef ALLOW_AUTODIFF_TAMC
255     kkey = (ikey-1)*Nr + k
256     #endif /* ALLOW_AUTODIFF_TAMC */
257    
258 adcroft 1.58 C-- Integrate hydrostatic balance for phiHyd with BC of
259     C phiHyd(z=0)=0
260     C distinguishe between Stagger and Non Stagger time stepping
261     IF (staggerTimeStep) THEN
262     CALL CALC_PHI_HYD(
263     I bi,bj,iMin,iMax,jMin,jMax,k,
264     I gTnm1, gSnm1,
265     U phiHyd,
266     I myThid )
267     ELSE
268     CALL CALC_PHI_HYD(
269     I bi,bj,iMin,iMax,jMin,jMax,k,
270     I theta, salt,
271     U phiHyd,
272     I myThid )
273     ENDIF
274 adcroft 1.75
275     #ifdef INCLUDE_CALC_DIFFUSIVITY_CALL
276     C-- Calculate the total vertical diffusivity
277 heimbach 1.76 CALL CALC_VISCOSITY(
278 adcroft 1.75 I bi,bj,iMin,iMax,jMin,jMax,k,
279     I maskUp,
280 heimbach 1.76 O KappaRU,KappaRV,
281 adcroft 1.75 I myThid)
282     #endif
283 adcroft 1.58
284     C-- Calculate accelerations in the momentum equations (gU, gV, ...)
285     C and step forward storing the result in gUnm1, gVnm1, etc...
286     IF ( momStepping ) THEN
287     CALL CALC_MOM_RHS(
288     I bi,bj,iMin,iMax,jMin,jMax,k,kup,kDown,
289     I phiHyd,KappaRU,KappaRV,
290     U fVerU, fVerV,
291     I myTime, myThid)
292     CALL TIMESTEP(
293 jmc 1.63 I bi,bj,iMin,iMax,jMin,jMax,k,
294     I phiHyd, phiSurfX, phiSurfY,
295 adcroft 1.58 I myIter, myThid)
296    
297     #ifdef ALLOW_OBCS
298     C-- Apply open boundary conditions
299     IF (useOBCS) THEN
300     CALL OBCS_APPLY_UV( bi, bj, k, gUnm1, gVnm1, myThid )
301     END IF
302     #endif /* ALLOW_OBCS */
303    
304     #ifdef ALLOW_AUTODIFF_TAMC
305     #ifdef INCLUDE_CD_CODE
306     ELSE
307     DO j=1-OLy,sNy+OLy
308     DO i=1-OLx,sNx+OLx
309     guCD(i,j,k,bi,bj) = 0.0
310     gvCD(i,j,k,bi,bj) = 0.0
311     END DO
312     END DO
313     #endif /* INCLUDE_CD_CODE */
314     #endif /* ALLOW_AUTODIFF_TAMC */
315     ENDIF
316    
317    
318     C-- end of dynamics k loop (1:Nr)
319     ENDDO
320    
321    
322    
323 adcroft 1.44 C-- Implicit viscosity
324 adcroft 1.58 IF (implicitViscosity.AND.momStepping) THEN
325     #ifdef ALLOW_AUTODIFF_TAMC
326     idkey = iikey + 3
327 heimbach 1.66 CADJ STORE gUNm1(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
328 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
329 adcroft 1.42 CALL IMPLDIFF(
330     I bi, bj, iMin, iMax, jMin, jMax,
331     I deltaTmom, KappaRU,recip_HFacW,
332     U gUNm1,
333     I myThid )
334 adcroft 1.58 #ifdef ALLOW_AUTODIFF_TAMC
335     idkey = iikey + 4
336 heimbach 1.66 CADJ STORE gVNm1(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
337 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
338 adcroft 1.42 CALL IMPLDIFF(
339     I bi, bj, iMin, iMax, jMin, jMax,
340     I deltaTmom, KappaRV,recip_HFacS,
341     U gVNm1,
342     I myThid )
343 heimbach 1.49
344 adcroft 1.58 #ifdef ALLOW_OBCS
345     C-- Apply open boundary conditions
346     IF (useOBCS) THEN
347     DO K=1,Nr
348     CALL OBCS_APPLY_UV( bi, bj, k, gUnm1, gVnm1, myThid )
349     ENDDO
350     END IF
351     #endif /* ALLOW_OBCS */
352 heimbach 1.49
353 adcroft 1.58 #ifdef INCLUDE_CD_CODE
354     #ifdef ALLOW_AUTODIFF_TAMC
355     idkey = iikey + 5
356 heimbach 1.66 CADJ STORE vVelD(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
357 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
358 adcroft 1.42 CALL IMPLDIFF(
359     I bi, bj, iMin, iMax, jMin, jMax,
360     I deltaTmom, KappaRU,recip_HFacW,
361     U vVelD,
362     I myThid )
363 adcroft 1.58 #ifdef ALLOW_AUTODIFF_TAMC
364     idkey = iikey + 6
365 heimbach 1.66 CADJ STORE uVelD(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
366 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
367 adcroft 1.42 CALL IMPLDIFF(
368     I bi, bj, iMin, iMax, jMin, jMax,
369     I deltaTmom, KappaRV,recip_HFacS,
370     U uVelD,
371     I myThid )
372 adcroft 1.58 #endif /* INCLUDE_CD_CODE */
373     C-- End If implicitViscosity.AND.momStepping
374 heimbach 1.53 ENDIF
375 cnh 1.1
376 jmc 1.62 Cjmc : add for phiHyd output <- but not working if multi tile per CPU
377     c IF ( DIFFERENT_MULTIPLE(dumpFreq,myTime+deltaTClock,myTime)
378     c & .AND. buoyancyRelation .eq. 'ATMOSPHERIC' ) THEN
379     c WRITE(suff,'(I10.10)') myIter+1
380     c CALL WRITE_FLD_XYZ_RL('PH.',suff,phiHyd,myIter+1,myThid)
381     c ENDIF
382     Cjmc(end)
383    
384 jmc 1.64 #ifdef ALLOW_TIMEAVE
385 jmc 1.62 IF (taveFreq.GT.0.) THEN
386 adcroft 1.68 CALL TIMEAVE_CUMUL_1T(phiHydtave, phiHyd, Nr,
387 jmc 1.64 I deltaTclock, bi, bj, myThid)
388 jmc 1.62 IF (ivdc_kappa.NE.0.) THEN
389 jmc 1.64 CALL TIMEAVE_CUMULATE(ConvectCountTave, ConvectCount, Nr,
390     I deltaTclock, bi, bj, myThid)
391 jmc 1.62 ENDIF
392     ENDIF
393 jmc 1.64 #endif /* ALLOW_TIMEAVE */
394 jmc 1.62
395 cnh 1.1 ENDDO
396     ENDDO
397 adcroft 1.69
398     #ifndef EXCLUDE_DEBUGMODE
399 adcroft 1.70 If (debugMode) THEN
400 adcroft 1.69 CALL DEBUG_STATS_RL(1,EtaN,'EtaN (DYNAMICS)',myThid)
401 adcroft 1.73 CALL DEBUG_STATS_RL(Nr,uVel,'Uvel (DYNAMICS)',myThid)
402 adcroft 1.69 CALL DEBUG_STATS_RL(Nr,vVel,'Vvel (DYNAMICS)',myThid)
403     CALL DEBUG_STATS_RL(Nr,wVel,'Wvel (DYNAMICS)',myThid)
404     CALL DEBUG_STATS_RL(Nr,theta,'Theta (DYNAMICS)',myThid)
405     CALL DEBUG_STATS_RL(Nr,salt,'Salt (DYNAMICS)',myThid)
406     CALL DEBUG_STATS_RL(Nr,Gu,'Gu (DYNAMICS)',myThid)
407     CALL DEBUG_STATS_RL(Nr,Gv,'Gv (DYNAMICS)',myThid)
408     CALL DEBUG_STATS_RL(Nr,Gt,'Gt (DYNAMICS)',myThid)
409     CALL DEBUG_STATS_RL(Nr,Gs,'Gs (DYNAMICS)',myThid)
410     CALL DEBUG_STATS_RL(Nr,GuNm1,'GuNm1 (DYNAMICS)',myThid)
411     CALL DEBUG_STATS_RL(Nr,GvNm1,'GvNm1 (DYNAMICS)',myThid)
412     CALL DEBUG_STATS_RL(Nr,GtNm1,'GtNm1 (DYNAMICS)',myThid)
413     CALL DEBUG_STATS_RL(Nr,GsNm1,'GsNm1 (DYNAMICS)',myThid)
414 adcroft 1.70 ENDIF
415 adcroft 1.69 #endif
416 cnh 1.1
417     RETURN
418     END

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