/[MITgcm]/MITgcm/model/src/dynamics.F
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Revision 1.75 - (hide annotations) (download)
Fri Aug 3 19:06:11 2001 UTC (22 years, 9 months ago) by adcroft
Branch: MAIN
Changes since 1.74: +16 -467 lines
Split dynamics.F into dynamics.F and thermodynamics.F
 - idea is to make algorithm more transparent???
 - probably less efficient
 - has exchanges at end of thermodynamics.F (which are needed
   if using staggered time-stepping with the cube OR using AIM.

1 adcroft 1.75 C $Header: /u/gcmpack/models/MITgcmUV/model/src/dynamics.F,v 1.74 2001/07/30 20:37:45 heimbach 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     C xA, yA - Per block temporaries holding face areas
62 cnh 1.38 C uTrans, vTrans, rTrans - Per block temporaries holding flow
63     C transport
64 jmc 1.61 C o uTrans: Zonal transport
65 cnh 1.1 C o vTrans: Meridional transport
66 cnh 1.30 C o rTrans: Vertical transport
67 adcroft 1.68 C maskUp o maskUp: land/water mask for W points
68 adcroft 1.58 C fVer[STUV] o fVer: Vertical flux term - note fVer
69 cnh 1.1 C is "pipelined" in the vertical
70     C so we need an fVer for each
71     C variable.
72 adcroft 1.58 C rhoK, rhoKM1 - Density at current level, and level above
73 cnh 1.31 C phiHyd - Hydrostatic part of the potential phiHydi.
74 cnh 1.38 C In z coords phiHydiHyd is the hydrostatic
75 jmc 1.65 C Potential (=pressure/rho0) anomaly
76 cnh 1.38 C In p coords phiHydiHyd is the geopotential
77 jmc 1.65 C surface height anomaly.
78 jmc 1.63 C phiSurfX, - gradient of Surface potentiel (Pressure/rho, ocean)
79     C phiSurfY or geopotentiel (atmos) in X and Y direction
80 cnh 1.30 C KappaRT, - Total diffusion in vertical for T and S.
81 cnh 1.38 C KappaRS (background + spatially varying, isopycnal term).
82 cnh 1.30 C iMin, iMax - Ranges and sub-block indices on which calculations
83     C jMin, jMax are applied.
84 cnh 1.1 C bi, bj
85 heimbach 1.53 C k, kup, - Index for layer above and below. kup and kDown
86     C kDown, km1 are switched with layer to be the appropriate
87 cnh 1.38 C index into fVerTerm.
88 adcroft 1.68 C tauAB - Adams-Bashforth timestepping weight: 0=forward ; 1/2=Adams-Bashf.
89 cnh 1.30 _RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
90     _RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
91     _RL uTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
92     _RL vTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
93     _RL rTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
94     _RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
95     _RL fVerT (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
96     _RL fVerS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
97 heimbach 1.72 _RL fVerTr1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
98 cnh 1.30 _RL fVerU (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
99     _RL fVerV (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
100 cnh 1.31 _RL phiHyd (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
101 cnh 1.30 _RL rhokm1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
102     _RL rhok (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
103 jmc 1.63 _RL phiSurfX(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
104     _RL phiSurfY(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
105 cnh 1.31 _RL KappaRT (1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr)
106     _RL KappaRS (1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr)
107 adcroft 1.42 _RL KappaRU (1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr)
108     _RL KappaRV (1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr)
109 adcroft 1.50 _RL sigmaX (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
110     _RL sigmaY (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
111     _RL sigmaR (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
112 adcroft 1.68 _RL tauAB
113 adcroft 1.12
114 jmc 1.62 C This is currently used by IVDC and Diagnostics
115 adcroft 1.45 _RL ConvectCount (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
116    
117 cnh 1.1 INTEGER iMin, iMax
118     INTEGER jMin, jMax
119     INTEGER bi, bj
120     INTEGER i, j
121 heimbach 1.53 INTEGER k, km1, kup, kDown
122 cnh 1.1
123 jmc 1.62 Cjmc : add for phiHyd output <- but not working if multi tile per CPU
124     c CHARACTER*(MAX_LEN_MBUF) suff
125     c LOGICAL DIFFERENT_MULTIPLE
126     c EXTERNAL DIFFERENT_MULTIPLE
127     Cjmc(end)
128    
129 adcroft 1.11 C--- The algorithm...
130     C
131     C "Correction Step"
132     C =================
133     C Here we update the horizontal velocities with the surface
134     C pressure such that the resulting flow is either consistent
135     C with the free-surface evolution or the rigid-lid:
136     C U[n] = U* + dt x d/dx P
137     C V[n] = V* + dt x d/dy P
138     C
139     C "Calculation of Gs"
140     C ===================
141     C This is where all the accelerations and tendencies (ie.
142 heimbach 1.53 C physics, parameterizations etc...) are calculated
143 adcroft 1.11 C rho = rho ( theta[n], salt[n] )
144 cnh 1.27 C b = b(rho, theta)
145 adcroft 1.11 C K31 = K31 ( rho )
146 jmc 1.61 C Gu[n] = Gu( u[n], v[n], wVel, b, ... )
147     C Gv[n] = Gv( u[n], v[n], wVel, b, ... )
148     C Gt[n] = Gt( theta[n], u[n], v[n], wVel, K31, ... )
149     C Gs[n] = Gs( salt[n], u[n], v[n], wVel, K31, ... )
150 adcroft 1.11 C
151 adcroft 1.12 C "Time-stepping" or "Prediction"
152 adcroft 1.11 C ================================
153     C The models variables are stepped forward with the appropriate
154     C time-stepping scheme (currently we use Adams-Bashforth II)
155     C - For momentum, the result is always *only* a "prediction"
156     C in that the flow may be divergent and will be "corrected"
157     C later with a surface pressure gradient.
158     C - Normally for tracers the result is the new field at time
159     C level [n+1} *BUT* in the case of implicit diffusion the result
160     C is also *only* a prediction.
161     C - We denote "predictors" with an asterisk (*).
162     C U* = U[n] + dt x ( 3/2 Gu[n] - 1/2 Gu[n-1] )
163     C V* = V[n] + dt x ( 3/2 Gv[n] - 1/2 Gv[n-1] )
164     C theta[n+1] = theta[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
165     C salt[n+1] = salt[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
166 adcroft 1.12 C With implicit diffusion:
167 adcroft 1.11 C theta* = theta[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
168     C salt* = salt[n] + dt x ( 3/2 Gt[n] - 1/2 atG[n-1] )
169 adcroft 1.12 C (1 + dt * K * d_zz) theta[n] = theta*
170     C (1 + dt * K * d_zz) salt[n] = salt*
171 adcroft 1.11 C---
172    
173 cnh 1.1 DO bj=myByLo(myThid),myByHi(myThid)
174     DO bi=myBxLo(myThid),myBxHi(myThid)
175 adcroft 1.75 Ccs-
176 heimbach 1.49
177 jmc 1.63 C-- Start computation of dynamics
178     iMin = 1-OLx+2
179     iMax = sNx+OLx-1
180     jMin = 1-OLy+2
181     jMax = sNy+OLy-1
182    
183 jmc 1.65 C-- Explicit part of the Surface Potentiel Gradient (add in TIMESTEP)
184 jmc 1.63 C (note: this loop will be replaced by CALL CALC_GRAD_ETA)
185     IF (implicSurfPress.NE.1.) THEN
186 jmc 1.65 CALL CALC_GRAD_PHI_SURF(
187     I bi,bj,iMin,iMax,jMin,jMax,
188     I etaN,
189     O phiSurfX,phiSurfY,
190     I myThid )
191 jmc 1.63 ENDIF
192 adcroft 1.58
193     C-- Start of dynamics loop
194     DO k=1,Nr
195    
196     C-- km1 Points to level above k (=k-1)
197     C-- kup Cycles through 1,2 to point to layer above
198     C-- kDown Cycles through 2,1 to point to current layer
199    
200     km1 = MAX(1,k-1)
201     kup = 1+MOD(k+1,2)
202     kDown= 1+MOD(k,2)
203    
204     C-- Integrate hydrostatic balance for phiHyd with BC of
205     C phiHyd(z=0)=0
206     C distinguishe between Stagger and Non Stagger time stepping
207     IF (staggerTimeStep) THEN
208     CALL CALC_PHI_HYD(
209     I bi,bj,iMin,iMax,jMin,jMax,k,
210     I gTnm1, gSnm1,
211     U phiHyd,
212     I myThid )
213     ELSE
214     CALL CALC_PHI_HYD(
215     I bi,bj,iMin,iMax,jMin,jMax,k,
216     I theta, salt,
217     U phiHyd,
218     I myThid )
219     ENDIF
220 adcroft 1.75
221     #ifdef ALLOW_AUTODIFF_TAMC
222     CADJ STORE KappaRT(:,:,k) = comlev1_bibj_k, key=kkey, byte=isbyte
223     CADJ STORE KappaRS(:,:,k) = comlev1_bibj_k, key=kkey, byte=isbyte
224     #endif /* ALLOW_AUTODIFF_TAMC */
225    
226     #ifdef INCLUDE_CALC_DIFFUSIVITY_CALL
227     C-- Calculate the total vertical diffusivity
228     CALL CALC_DIFFUSIVITY(
229     I bi,bj,iMin,iMax,jMin,jMax,k,
230     I maskUp,
231     O KappaRT,KappaRS,KappaRU,KappaRV,
232     I myThid)
233     #endif
234 adcroft 1.58
235     C-- Calculate accelerations in the momentum equations (gU, gV, ...)
236     C and step forward storing the result in gUnm1, gVnm1, etc...
237     IF ( momStepping ) THEN
238     CALL CALC_MOM_RHS(
239     I bi,bj,iMin,iMax,jMin,jMax,k,kup,kDown,
240     I phiHyd,KappaRU,KappaRV,
241     U fVerU, fVerV,
242     I myTime, myThid)
243     CALL TIMESTEP(
244 jmc 1.63 I bi,bj,iMin,iMax,jMin,jMax,k,
245     I phiHyd, phiSurfX, phiSurfY,
246 adcroft 1.58 I myIter, myThid)
247    
248     #ifdef ALLOW_OBCS
249     C-- Apply open boundary conditions
250     IF (useOBCS) THEN
251     CALL OBCS_APPLY_UV( bi, bj, k, gUnm1, gVnm1, myThid )
252     END IF
253     #endif /* ALLOW_OBCS */
254    
255     #ifdef ALLOW_AUTODIFF_TAMC
256     #ifdef INCLUDE_CD_CODE
257     ELSE
258     DO j=1-OLy,sNy+OLy
259     DO i=1-OLx,sNx+OLx
260     guCD(i,j,k,bi,bj) = 0.0
261     gvCD(i,j,k,bi,bj) = 0.0
262     END DO
263     END DO
264     #endif /* INCLUDE_CD_CODE */
265     #endif /* ALLOW_AUTODIFF_TAMC */
266     ENDIF
267    
268    
269     C-- end of dynamics k loop (1:Nr)
270     ENDDO
271    
272    
273    
274 adcroft 1.44 C-- Implicit viscosity
275 adcroft 1.58 IF (implicitViscosity.AND.momStepping) THEN
276     #ifdef ALLOW_AUTODIFF_TAMC
277     idkey = iikey + 3
278 heimbach 1.66 CADJ STORE gUNm1(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
279 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
280 adcroft 1.42 CALL IMPLDIFF(
281     I bi, bj, iMin, iMax, jMin, jMax,
282     I deltaTmom, KappaRU,recip_HFacW,
283     U gUNm1,
284     I myThid )
285 adcroft 1.58 #ifdef ALLOW_AUTODIFF_TAMC
286     idkey = iikey + 4
287 heimbach 1.66 CADJ STORE gVNm1(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
288 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
289 adcroft 1.42 CALL IMPLDIFF(
290     I bi, bj, iMin, iMax, jMin, jMax,
291     I deltaTmom, KappaRV,recip_HFacS,
292     U gVNm1,
293     I myThid )
294 heimbach 1.49
295 adcroft 1.58 #ifdef ALLOW_OBCS
296     C-- Apply open boundary conditions
297     IF (useOBCS) THEN
298     DO K=1,Nr
299     CALL OBCS_APPLY_UV( bi, bj, k, gUnm1, gVnm1, myThid )
300     ENDDO
301     END IF
302     #endif /* ALLOW_OBCS */
303 heimbach 1.49
304 adcroft 1.58 #ifdef INCLUDE_CD_CODE
305     #ifdef ALLOW_AUTODIFF_TAMC
306     idkey = iikey + 5
307 heimbach 1.66 CADJ STORE vVelD(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
308 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
309 adcroft 1.42 CALL IMPLDIFF(
310     I bi, bj, iMin, iMax, jMin, jMax,
311     I deltaTmom, KappaRU,recip_HFacW,
312     U vVelD,
313     I myThid )
314 adcroft 1.58 #ifdef ALLOW_AUTODIFF_TAMC
315     idkey = iikey + 6
316 heimbach 1.66 CADJ STORE uVelD(:,:,:,bi,bj) = comlev1_bibj , key=ikey, byte=isbyte
317 adcroft 1.58 #endif /* ALLOW_AUTODIFF_TAMC */
318 adcroft 1.42 CALL IMPLDIFF(
319     I bi, bj, iMin, iMax, jMin, jMax,
320     I deltaTmom, KappaRV,recip_HFacS,
321     U uVelD,
322     I myThid )
323 adcroft 1.58 #endif /* INCLUDE_CD_CODE */
324     C-- End If implicitViscosity.AND.momStepping
325 heimbach 1.53 ENDIF
326 cnh 1.1
327 jmc 1.62 Cjmc : add for phiHyd output <- but not working if multi tile per CPU
328     c IF ( DIFFERENT_MULTIPLE(dumpFreq,myTime+deltaTClock,myTime)
329     c & .AND. buoyancyRelation .eq. 'ATMOSPHERIC' ) THEN
330     c WRITE(suff,'(I10.10)') myIter+1
331     c CALL WRITE_FLD_XYZ_RL('PH.',suff,phiHyd,myIter+1,myThid)
332     c ENDIF
333     Cjmc(end)
334    
335 jmc 1.64 #ifdef ALLOW_TIMEAVE
336 jmc 1.62 IF (taveFreq.GT.0.) THEN
337 adcroft 1.68 CALL TIMEAVE_CUMUL_1T(phiHydtave, phiHyd, Nr,
338 jmc 1.64 I deltaTclock, bi, bj, myThid)
339 jmc 1.62 IF (ivdc_kappa.NE.0.) THEN
340 jmc 1.64 CALL TIMEAVE_CUMULATE(ConvectCountTave, ConvectCount, Nr,
341     I deltaTclock, bi, bj, myThid)
342 jmc 1.62 ENDIF
343     ENDIF
344 jmc 1.64 #endif /* ALLOW_TIMEAVE */
345 jmc 1.62
346 cnh 1.1 ENDDO
347     ENDDO
348 adcroft 1.69
349     #ifndef EXCLUDE_DEBUGMODE
350 adcroft 1.70 If (debugMode) THEN
351 adcroft 1.69 CALL DEBUG_STATS_RL(1,EtaN,'EtaN (DYNAMICS)',myThid)
352 adcroft 1.73 CALL DEBUG_STATS_RL(Nr,uVel,'Uvel (DYNAMICS)',myThid)
353 adcroft 1.69 CALL DEBUG_STATS_RL(Nr,vVel,'Vvel (DYNAMICS)',myThid)
354     CALL DEBUG_STATS_RL(Nr,wVel,'Wvel (DYNAMICS)',myThid)
355     CALL DEBUG_STATS_RL(Nr,theta,'Theta (DYNAMICS)',myThid)
356     CALL DEBUG_STATS_RL(Nr,salt,'Salt (DYNAMICS)',myThid)
357     CALL DEBUG_STATS_RL(Nr,Gu,'Gu (DYNAMICS)',myThid)
358     CALL DEBUG_STATS_RL(Nr,Gv,'Gv (DYNAMICS)',myThid)
359     CALL DEBUG_STATS_RL(Nr,Gt,'Gt (DYNAMICS)',myThid)
360     CALL DEBUG_STATS_RL(Nr,Gs,'Gs (DYNAMICS)',myThid)
361     CALL DEBUG_STATS_RL(Nr,GuNm1,'GuNm1 (DYNAMICS)',myThid)
362     CALL DEBUG_STATS_RL(Nr,GvNm1,'GvNm1 (DYNAMICS)',myThid)
363     CALL DEBUG_STATS_RL(Nr,GtNm1,'GtNm1 (DYNAMICS)',myThid)
364     CALL DEBUG_STATS_RL(Nr,GsNm1,'GsNm1 (DYNAMICS)',myThid)
365 adcroft 1.70 ENDIF
366 adcroft 1.69 #endif
367 cnh 1.1
368     RETURN
369     END

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