/[MITgcm]/MITgcm/model/src/forward_step.F
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revision 1.32 by heimbach, Thu May 30 02:32:14 2002 UTC revision 1.90 by molod, Tue Mar 30 18:26:09 2004 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
2  C $Name$  C $Name$
3    
4    #include "PACKAGES_CONFIG.h"
5  #include "CPP_OPTIONS.h"  #include "CPP_OPTIONS.h"
6    
7    cswdptr -- add --
8    #ifdef ALLOW_GCHEM
9    # include "GCHEM_OPTIONS.h"
10    #endif
11    cswdptr -- end add ---
12    
13  CBOP  CBOP
14  C     !ROUTINE: FORWARD_STEP  C     !ROUTINE: FORWARD_STEP
15  C     !INTERFACE:  C     !INTERFACE:
# Line 49  C     == Global variables == Line 56  C     == Global variables ==
56  # include "ctrl.h"  # include "ctrl.h"
57  # include "ctrl_dummy.h"  # include "ctrl_dummy.h"
58  # include "cost.h"  # include "cost.h"
59  # ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE  # include "EOS.h"
60    # ifdef ALLOW_EXF
61  #  include "exf_fields.h"  #  include "exf_fields.h"
62    #  include "exf_clim_fields.h"
63  #  ifdef ALLOW_BULKFORMULAE  #  ifdef ALLOW_BULKFORMULAE
64  #   include "exf_constants.h"  #   include "exf_constants.h"
65  #  endif  #  endif
# Line 58  C     == Global variables == Line 67  C     == Global variables ==
67  # ifdef ALLOW_OBCS  # ifdef ALLOW_OBCS
68  #  include "OBCS.h"  #  include "OBCS.h"
69  # endif  # endif
70  #endif  # ifdef ALLOW_PTRACERS
71    #  include "PTRACERS.h"
72    # endif
73    # ifdef ALLOW_CD_CODE
74    #  include "CD_CODE_VARS.h"
75    # endif
76    #endif /* ALLOW_AUTODIFF_TAMC */
77    
78  C     !LOCAL VARIABLES:  C     !LOCAL VARIABLES:
79  C     == Routine arguments ==  C     == Routine arguments ==
# Line 74  C     mythid - thread number for this in Line 89  C     mythid - thread number for this in
89        integer mythid        integer mythid
90        integer myiter        integer myiter
91        _RL     mytime        _RL     mytime
       INTEGER bi,bj  
92    
93          integer i,L
94  CEOP  CEOP
95    
96    #ifdef ALLOW_DEBUG
97          IF ( debugLevel .GE. debLevB )
98         &    CALL DEBUG_ENTER('FORWARD_STEP',myThid)
99    #endif
100    
101  #ifdef ALLOW_AUTODIFF_TAMC  #ifdef ALLOW_AUTODIFF_TAMC
102  C--     Reset the model iteration counter and the model time.  C--   Reset the model iteration counter and the model time.
103          myiter = nIter0 + (iloop-1)        myiter = nIter0 + (iloop-1)
104          mytime = startTime + float(iloop-1)*deltaTclock        mytime = startTime + float(iloop-1)*deltaTclock
105  #endif  #endif
106    
107  #if (defined (ALLOW_AUTODIFF_TAMC) && defined (ALLOW_AUTODIFF_MONITOR))  #if (defined (ALLOW_AUTODIFF_TAMC) && defined (ALLOW_AUTODIFF_MONITOR))
108  C       Include call to a dummy routine. Its adjoint will be  C     Include call to a dummy routine. Its adjoint will be
109  C       called at the proper place in the adjoint code.  C     called at the proper place in the adjoint code.
110  C       The adjoint routine will print out adjoint values  C     The adjoint routine will print out adjoint values
111  C       if requested. The location of the call is important,  C     if requested. The location of the call is important,
112  C       it has to be after the adjoint of the exchanges  C     it has to be after the adjoint of the exchanges
113  C       (DO_GTERM_BLOCKING_EXCHANGES).  C     (DO_GTERM_BLOCKING_EXCHANGES).
114          CALL DUMMY_IN_STEPPING( myTime, myIter, myThid )        CALL DUMMY_IN_STEPPING( myTime, myIter, myThid )
115          CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )  cph   I've commented this line since it may conflict with MITgcm's adjoint
116    cph   However, need to check whether that's still consistent
117    cph   with the ecco-branch (it should).
118    cph      CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )
119  #endif  #endif
120    
121  #ifdef EXACT_CONSERV  #ifdef EXACT_CONSERV
122        IF (exactConserv) THEN        IF (exactConserv) THEN
123  C--   Update etaH(n+1) :  C--   Update etaH(n+1) :
124          DO bj=myByLo(myThid),myByHi(myThid)           CALL TIMER_START('UPDATE_ETAH        [FORWARD_STEP]',mythid)
125           DO bi=myBxLo(myThid),myBxHi(myThid)           CALL UPDATE_ETAH( myTime, myIter, myThid )
126             CALL CALC_EXACT_ETA( .FALSE., bi,bj, uVel,vVel,           CALL TIMER_STOP ('UPDATE_ETAH        [FORWARD_STEP]',mythid)
      I                          myTime, myIter, myThid )  
          ENDDO  
         ENDDO  
         IF (implicDiv2Dflow .NE. 1. _d 0 .OR. useOBCS )  
      &     _EXCH_XY_R8(etaH, myThid )  
127        ENDIF        ENDIF
128  #endif /* EXACT_CONSERV */  #endif /* EXACT_CONSERV */
129    
130  #ifdef NONLIN_FRSURF  #ifdef NONLIN_FRSURF
131  C--   compute the future surface level thickness        IF ( select_rStar.NE.0 ) THEN
132  C      according to etaH(n+1)  C--   r* : compute the future level thickness according to etaH(n+1)
133          IF ( nonlinFreeSurf.GT.0) THEN            CALL TIMER_START('CALC_R_STAR       [FORWARD_STEP]',mythid)
134              CALL CALC_R_STAR(etaH, myTime, myIter, myThid )
135              CALL TIMER_STOP ('CALC_R_STAR       [FORWARD_STEP]',mythid)
136          ELSEIF ( nonlinFreeSurf.GT.0) THEN
137    C--   compute the future surface level thickness according to etaH(n+1)
138              CALL TIMER_START('CALC_SURF_DR      [FORWARD_STEP]',mythid)
139            CALL CALC_SURF_DR(etaH, myTime, myIter, myThid )            CALL CALC_SURF_DR(etaH, myTime, myIter, myThid )
140          ENDIF            CALL TIMER_STOP ('CALC_SURF_DR      [FORWARD_STEP]',mythid)
141          ENDIF
142  #endif /* NONLIN_FRSURF */  #endif /* NONLIN_FRSURF */
143    
 C--     Load forcing/external data fields.  
 #ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE  
 C       NOTE, that although the exf package is part of the  
 C       distribution, it is not currently maintained, i.e.  
 C       exf is disabled by default in genmake.  
144  #ifdef ALLOW_AUTODIFF_TAMC  #ifdef ALLOW_AUTODIFF_TAMC
145  c**************************************  c**************************************
146  #include "checkpoint_lev1_directives.h"  #include "checkpoint_lev1_directives.h"
147  c**************************************  c**************************************
148  #endif  #endif
149          CALL EXF_GETFORCING( mytime, myiter, mythid )  
150  #else  C--   Call external forcing package
151          CALL TIMER_START('EXTERNAL_FIELDS_LOAD[THE_MAIN_LOOP]',mythid)  #ifdef ALLOW_BULK_FORCE
152          CALL EXTERNAL_FIELDS_LOAD( mytime, myiter, mythid )        IF ( useBulkForce ) THEN
153          CALL TIMER_STOP ('EXTERNAL_FIELDS_LOAD[THE_MAIN_LOOP]',mythid)  #ifdef ALLOW_DEBUG
154           IF ( debugLevel .GE. debLevB )
155         &    CALL DEBUG_CALL('BULKF_FIELDS_LOAD',myThid)
156    #endif
157           CALL TIMER_START('BULKF_FORCING      [FORWARD_STEP]',mythid)
158    C-    load all forcing fields at current time
159           CALL BULKF_FIELDS_LOAD( myTime, myIter, myThid )
160    C-    calculate qnet and empmr (and wind stress)
161           CALL BULKF_FORCING( myTime, myIter, myThid )
162           CALL TIMER_STOP ('BULKF_FORCING      [FORWARD_STEP]',mythid)
163          ELSE
164    #endif /* ALLOW_BULK_FORCE */
165    
166    # ifdef ALLOW_EXF
167    #  ifdef ALLOW_DEBUG
168          IF ( debugLevel .GE. debLevB )
169         &    CALL DEBUG_CALL('EXF_GETFORCING',myThid)
170    #  endif
171          CALL TIMER_START('EXF_GETFORCING     [FORWARD_STEP]',mythid)
172          CALL EXF_GETFORCING( mytime, myiter, mythid )
173          CALL TIMER_STOP ('EXF_GETFORCING     [FORWARD_STEP]',mythid)
174    # else /* ALLOW_EXF undef */
175    cph The following IF-statement creates an additional dependency
176    cph for the forcing fields requiring additional storing.
177    cph Therefore, the IF-statement will be put between CPP-OPTIONS,
178    cph assuming that ALLOW_SEAICE has not yet been differentiated.
179    #  ifdef ALLOW_SEAICE
180          IF ( .NOT. useSEAICE ) THEN
181    #  endif
182    #ifdef ALLOW_DEBUG
183           IF ( debugLevel .GE. debLevB )
184         &    CALL DEBUG_CALL('EXTERNAL_FIELDS_LOAD',myThid)
185    #endif
186           CALL TIMER_START('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid)
187           CALL EXTERNAL_FIELDS_LOAD( mytime, myiter, mythid )
188           CALL TIMER_STOP ('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid)
189    #  ifdef ALLOW_SEAICE
190          ENDIF
191    #  endif
192    # endif /* ALLOW_EXF */
193    #ifdef ALLOW_BULK_FORCE
194    C--   end of if/else block useBulfforce --
195          ENDIF
196    #endif /* ALLOW_BULK_FORCE */
197    
198    #ifdef ALLOW_AUTODIFF
199    c--   Add control vector for forcing and parameter fields
200          if ( myiter .EQ. nIter0 )
201         &     CALL CTRL_MAP_FORCING (mythid)
202    #endif
203    
204    #ifdef ALLOW_THSICE
205          IF (useThSIce) THEN
206    #ifdef ALLOW_DEBUG
207            IF ( debugLevel .GE. debLevB )
208         &    CALL DEBUG_CALL('THSICE_MAIN',myThid)
209    #endif
210    C--     Step forward Therm.Sea-Ice variables
211    C       and modify forcing terms including effects from ice
212            CALL TIMER_START('THSICE_MAIN        [FORWARD_STEP]', myThid)
213            CALL THSICE_MAIN( myTime, myIter, myThid )
214            CALL TIMER_STOP( 'THSICE_MAIN        [FORWARD_STEP]', myThid)
215          ENDIF
216    #endif /* ALLOW_THSICE */
217    
218    # ifdef ALLOW_SEAICE
219    C--   Call sea ice model to compute forcing/external data fields.  In
220    C     addition to computing prognostic sea-ice variables and diagnosing the
221    C     forcing/external data fields that drive the ocean model, SEAICE_MODEL
222    C     also sets theta to the freezing point under sea-ice.  The implied
223    C     surface heat flux is then stored in variable surfaceTendencyTice,
224    C     which is needed by KPP package (kpp_calc.F and kpp_transport_t.F)
225    C     to diagnose surface buoyancy fluxes and for the non-local transport
226    C     term.  Because this call precedes model thermodynamics, temperature
227    C     under sea-ice may not be "exactly" at the freezing point by the time
228    C     theta is dumped or time-averaged.
229          IF ( useSEAICE ) THEN
230    #ifdef ALLOW_DEBUG
231             IF ( debugLevel .GE. debLevB )
232         &    CALL DEBUG_CALL('SEAICE_MODEL',myThid)
233    #endif
234             CALL TIMER_START('SEAICE_MODEL       [FORWARD_STEP]',myThid)
235             CALL SEAICE_MODEL( myTime, myIter, myThid )
236             CALL TIMER_STOP ('SEAICE_MODEL       [FORWARD_STEP]',myThid)
237          ENDIF
238    # endif /* ALLOW_SEAICE */
239    
240    C--   Freeze water at the surface
241    #ifdef ALLOW_AUTODIFF_TAMC
242    CADJ STORE theta = comlev1, key = ikey_dynamics
243    #endif
244          IF ( allowFreezing .AND. .NOT. useSEAICE
245         &                   .AND. .NOT. useThSIce ) THEN
246            CALL FREEZE_SURFACE(  myTime, myIter, myThid )
247          ENDIF
248    
249    #ifdef ALLOW_AUTODIFF_TAMC
250    # ifdef ALLOW_PTRACERS
251    cph this replaces _bibj storing of ptracer within thermodynamics
252    CADJ STORE ptracer  = comlev1, key = ikey_dynamics
253    # endif
254  #endif  #endif
255    
256    #ifdef ALLOW_PTRACERS
257    # ifdef ALLOW_GCHEM
258             CALL GCHEM_FIELDS_LOAD( mytime, myiter, mythid )
259    # endif
260    #endif
261    
262    #ifdef COMPONENT_MODULE
263           IF ( useCoupler ) THEN
264    C      Post coupling data that I export.
265    C      Read in coupling data that I import.
266             CALL TIMER_START('CPL_EXPORT-IMPORT  [FORWARD_STEP]',myThid)
267             CALL CPL_EXPORT_MY_DATA(       myIter, myTime, myThid )
268             CALL CPL_IMPORT_EXTERNAL_DATA( myIter, myTime, myThid )
269             CALL TIMER_STOP ('CPL_EXPORT-IMPORT  [FORWARD_STEP]',myThid)
270           ENDIF
271    #endif /* COMPONENT_MODULE */
272    
273    #ifdef COMPONENT_MODULE
274    # ifndef ALLOW_AIM
275    C jmc: don't know precisely where to put this call. leave it here for now.
276           IF ( useCoupler ) THEN
277             CALL OCN_APPLY_IMPORT( myTime, myIter, myThid )
278           ENDIF
279    # endif
280    #endif /* COMPONENT_MODULE */
281    
282  C--     Step forward fields and calculate time tendency terms.  C--     Step forward fields and calculate time tendency terms.
283          CALL TIMER_START('THERMODYNAMICS      [THE_MAIN_LOOP]',mythid)  
284    C AMM
285    #ifdef ALLOW_FIZHI
286            if( useFIZHI) then
287             CALL TIMER_START('FIZHI               [FORWARD_STEP]',mythid)
288             CALL UPDATE_OCEAN_EXPORTS ( myTime, myIter, myThid )
289             CALL UPDATE_EARTH_EXPORTS ( myTime, myIter, myThid )
290             CALL UPDATE_CHEMISTRY_EXPORTS ( myTime, myIter, myThid )
291             CALL FIZHI_WRAPPER ( myTime, myIter, myThid )
292             CALL STEP_FIZHI_FG ( myTime, myIter, myThid, deltaTtracer )
293             CALL TIMER_STOP ('FIZHI               [FORWARD_STEP]',mythid)
294            endif
295    #endif
296    C AMM
297    
298    #ifdef ALLOW_DEBUG
299          IF ( debugLevel .GE. debLevB )
300         &    CALL DEBUG_CALL('THERMODYNAMICS',myThid)
301    #endif
302            CALL TIMER_START('THERMODYNAMICS      [FORWARD_STEP]',mythid)
303          CALL THERMODYNAMICS( myTime, myIter, myThid )          CALL THERMODYNAMICS( myTime, myIter, myThid )
304          CALL TIMER_STOP ('THERMODYNAMICS      [THE_MAIN_LOOP]',mythid)          CALL TIMER_STOP ('THERMODYNAMICS      [FORWARD_STEP]',mythid)
305    
306    C--   do exchanges (needed for DYNAMICS) when using stagger time-step :
307    #ifdef ALLOW_DEBUG
308          IF ( debugLevel .GE. debLevB )
309         &    CALL DEBUG_CALL('DO_STAGGER_FIELDS_EXCH.',myThid)
310    #endif
311            CALL TIMER_START('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
312            CALL DO_STAGGER_FIELDS_EXCHANGES( myTime, myIter, myThid )
313            CALL TIMER_STOP ('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
314    
315  #ifdef ALLOW_SHAP_FILT  #ifdef ALLOW_SHAP_FILT
316         IF (useSHAP_FILT .AND.        IF (useSHAP_FILT .AND.
317       &     staggerTimeStep .AND. shap_filt_TrStagg ) THEN       &     staggerTimeStep .AND. shap_filt_TrStagg ) THEN
318          CALL TIMER_START('SHAP_FILT           [THE_MAIN_LOOP]',myThid)  #ifdef ALLOW_DEBUG
319          CALL SHAP_FILT_APPLY_TS( gT, gS, myTime, myIter, myThid )          IF ( debugLevel .GE. debLevB )
320          CALL TIMER_STOP ('SHAP_FILT           [THE_MAIN_LOOP]',myThid)       &    CALL DEBUG_CALL('SHAP_FILT_APPLY_TS',myThid)
321         ENDIF  #endif
322            CALL TIMER_START('SHAP_FILT           [FORWARD_STEP]',myThid)
323            CALL SHAP_FILT_APPLY_TS(gT,gS,myTime+deltaT,myIter+1,myThid)
324            CALL TIMER_STOP ('SHAP_FILT           [FORWARD_STEP]',myThid)
325          ENDIF
326  #endif  #endif
327    
328  #ifdef ALLOW_ZONAL_FILT  #ifdef ALLOW_ZONAL_FILT
329         IF (useZONAL_FILT .AND.        IF (useZONAL_FILT .AND.
330       &     staggerTimeStep .AND. zonal_filt_TrStagg ) THEN       &     staggerTimeStep .AND. zonal_filt_TrStagg ) THEN
331          CALL TIMER_START('ZONAL_FILT_APPLY    [THE_MAIN_LOOP]',myThid)  #ifdef ALLOW_DEBUG
332            IF ( debugLevel .GE. debLevB )
333         &    CALL DEBUG_CALL('ZONAL_FILT_APPLY_TS',myThid)
334    #endif
335            CALL TIMER_START('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)
336          CALL ZONAL_FILT_APPLY_TS( gT, gS, myThid )          CALL ZONAL_FILT_APPLY_TS( gT, gS, myThid )
337          CALL TIMER_STOP ('ZONAL_FILT_APPLY    [THE_MAIN_LOOP]',myThid)          CALL TIMER_STOP ('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)
338        ENDIF        ENDIF
339  #endif    #endif  
340    
341  C--     Step forward fields and calculate time tendency terms.  C--   Step forward fields and calculate time tendency terms.
342          IF ( momStepping ) THEN  #ifndef ALLOW_AUTODIFF_TAMC
343          CALL TIMER_START('DYNAMICS            [THE_MAIN_LOOP]',mythid)        IF ( momStepping ) THEN
344    #endif
345    #ifdef ALLOW_DEBUG
346            IF ( debugLevel .GE. debLevB )
347         &    CALL DEBUG_CALL('DYNAMICS',myThid)
348    #endif
349            CALL TIMER_START('DYNAMICS            [FORWARD_STEP]',mythid)
350          CALL DYNAMICS( myTime, myIter, myThid )          CALL DYNAMICS( myTime, myIter, myThid )
351          CALL TIMER_STOP ('DYNAMICS            [THE_MAIN_LOOP]',mythid)          CALL TIMER_STOP ('DYNAMICS            [FORWARD_STEP]',mythid)
352          ENDIF  #ifndef ALLOW_AUTODIFF_TAMC
353          ENDIF
354    #endif
355    
356  #ifdef ALLOW_NONHYDROSTATIC  #ifdef ALLOW_NONHYDROSTATIC
357  C--   Step forward W field in N-H algorithm  C--   Step forward W field in N-H algorithm
358          IF ( momStepping .AND. nonHydrostatic ) THEN        IF ( momStepping .AND. nonHydrostatic ) THEN
359            CALL TIMER_START('CALC_GW          [THE_MAIN_LOOP]',myThid)  #ifdef ALLOW_DEBUG
360            CALL CALC_GW(myThid)            IF ( debugLevel .GE. debLevB )
361            CALL TIMER_STOP ('CALC_GW          [THE_MAIN_LOOP]',myThid)       &     CALL DEBUG_CALL('CALC_GW',myThid)
362          ENDIF  #endif
363             CALL TIMER_START('CALC_GW          [FORWARD_STEP]',myThid)
364             CALL CALC_GW(myThid)
365             CALL TIMER_STOP ('CALC_GW          [FORWARD_STEP]',myThid)
366          ENDIF
367  #endif  #endif
368    
369  #ifdef NONLIN_FRSURF  #ifdef NONLIN_FRSURF
370  C--   update hfacC,W,S and recip_hFac according to etaH(n+1) :  C--   update hfacC,W,S and recip_hFac according to etaH(n+1) :
       IF ( momStepping ) THEN  
371        IF ( nonlinFreeSurf.GT.0) THEN        IF ( nonlinFreeSurf.GT.0) THEN
372           IF ( select_rStar.GT.0 ) THEN
373            CALL TIMER_START('UPDATE_R_STAR      [FORWARD_STEP]',myThid)
374            CALL UPDATE_R_STAR( myTime, myIter, myThid )
375            CALL TIMER_STOP ('UPDATE_R_STAR      [FORWARD_STEP]',myThid)
376           ELSE
377            CALL TIMER_START('UPDATE_SURF_DR     [FORWARD_STEP]',myThid)
378          CALL UPDATE_SURF_DR( myTime, myIter, myThid )          CALL UPDATE_SURF_DR( myTime, myIter, myThid )
379            CALL TIMER_STOP ('UPDATE_SURF_DR     [FORWARD_STEP]',myThid)
380           ENDIF
381        ENDIF        ENDIF
382  C-    update also CG2D matrix (and preconditioner)  C-    update also CG2D matrix (and preconditioner)
383        IF ( nonlinFreeSurf.GT.2) THEN        IF ( momStepping .AND. nonlinFreeSurf.GT.2 ) THEN
384            CALL TIMER_START('UPDATE_CG2D        [FORWARD_STEP]',myThid)
385          CALL UPDATE_CG2D( myTime, myIter, myThid )          CALL UPDATE_CG2D( myTime, myIter, myThid )
386        ENDIF          CALL TIMER_STOP ('UPDATE_CG2D        [FORWARD_STEP]',myThid)
387        ENDIF        ENDIF
388  #endif  #endif
389    
390  C--   Apply Filters to u*,v* before SOLVE_FOR_PRESSURE  C--   Apply Filters to u*,v* before SOLVE_FOR_PRESSURE
391  #ifdef ALLOW_SHAP_FILT  #ifdef ALLOW_SHAP_FILT
392        IF (useSHAP_FILT .AND. shap_filt_uvStar) THEN        IF (useSHAP_FILT .AND. shap_filt_uvStar) THEN
393          CALL TIMER_START('SHAP_FILT           [THE_MAIN_LOOP]',myThid)          CALL TIMER_START('SHAP_FILT           [FORWARD_STEP]',myThid)
         CALL SHAP_FILT_APPLY_UV( gUnm1,gVnm1, myTime,myIter,myThid )  
394          IF (implicDiv2Dflow.LT.1.) THEN          IF (implicDiv2Dflow.LT.1.) THEN
395  C--   Explicit+Implicit part of the Barotropic Flow Divergence  C--   Explicit+Implicit part of the Barotropic Flow Divergence
396  C      => Filtering of uVel,vVel is necessary  C      => Filtering of uVel,vVel is necessary
397            CALL SHAP_FILT_APPLY_UV( uVel,vVel, myTime,myIter,myThid )            CALL SHAP_FILT_APPLY_UV( uVel,vVel,
398         &                             myTime+deltaT, myIter+1, myThid )
399          ENDIF          ENDIF
400          CALL TIMER_STOP ('SHAP_FILT           [THE_MAIN_LOOP]',myThid)          CALL SHAP_FILT_APPLY_UV( gU,gV,myTime+deltaT,myIter+1,myThid)
401            CALL TIMER_STOP ('SHAP_FILT           [FORWARD_STEP]',myThid)
402        ENDIF        ENDIF
403  #endif  #endif
404  #ifdef ALLOW_ZONAL_FILT  #ifdef ALLOW_ZONAL_FILT
405        IF (useZONAL_FILT .AND. zonal_filt_uvStar) THEN        IF (useZONAL_FILT .AND. zonal_filt_uvStar) THEN
406          CALL TIMER_START('ZONAL_FILT_APPLY    [THE_MAIN_LOOP]',myThid)          CALL TIMER_START('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)
         CALL ZONAL_FILT_APPLY_UV( gUnm1, gVnm1, myThid )  
407          IF (implicDiv2Dflow.LT.1.) THEN          IF (implicDiv2Dflow.LT.1.) THEN
408  C--   Explicit+Implicit part of the Barotropic Flow Divergence  C--   Explicit+Implicit part of the Barotropic Flow Divergence
409  C      => Filtering of uVel,vVel is necessary  C      => Filtering of uVel,vVel is necessary
410            CALL ZONAL_FILT_APPLY_UV( uVel, vVel, myThid )            CALL ZONAL_FILT_APPLY_UV( uVel, vVel, myThid )
411          ENDIF          ENDIF
412          CALL TIMER_STOP ('ZONAL_FILT_APPLY    [THE_MAIN_LOOP]',myThid)          CALL ZONAL_FILT_APPLY_UV( gU, gV, myThid )
413            CALL TIMER_STOP ('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)
414        ENDIF        ENDIF
415  #endif    #endif  
416    
# Line 216  C--   Solve elliptic equation(s). Line 418  C--   Solve elliptic equation(s).
418  C     Two-dimensional only for conventional hydrostatic or  C     Two-dimensional only for conventional hydrostatic or
419  C     three-dimensional for non-hydrostatic and/or IGW scheme.  C     three-dimensional for non-hydrostatic and/or IGW scheme.
420        IF ( momStepping ) THEN        IF ( momStepping ) THEN
421        CALL TIMER_START('SOLVE_FOR_PRESSURE  [THE_MAIN_LOOP]',myThid)        CALL TIMER_START('SOLVE_FOR_PRESSURE  [FORWARD_STEP]',myThid)
422        CALL SOLVE_FOR_PRESSURE(myTime, myIter, myThid)        CALL SOLVE_FOR_PRESSURE(myTime, myIter, myThid)
423        CALL TIMER_STOP ('SOLVE_FOR_PRESSURE  [THE_MAIN_LOOP]',myThid)        CALL TIMER_STOP ('SOLVE_FOR_PRESSURE  [FORWARD_STEP]',myThid)
424        ENDIF        ENDIF
425    
426    #ifdef ALLOW_AUTODIFF_TAMC
427    cph This is needed because convective_adjustment calls
428    cph find_rho which may use pressure()
429    CADJ STORE totphihyd  = comlev1, key = ikey_dynamics
430    #endif
431  C--   Correct divergence in flow field and cycle time-stepping  C--   Correct divergence in flow field and cycle time-stepping
432  C     arrays (for all fields) ; update time-counter  C     arrays (for all fields) ; update time-counter
433        myIter = nIter0 + iLoop        myIter = nIter0 + iLoop
434        myTime = startTime + deltaTClock * float(iLoop)        myTime = startTime + deltaTClock * float(iLoop)
435        CALL TIMER_START('THE_CORRECTION_STEP [THE_MAIN_LOOP]',myThid)        CALL TIMER_START('THE_CORRECTION_STEP [FORWARD_STEP]',myThid)
436        CALL THE_CORRECTION_STEP(myTime, myIter, myThid)        CALL THE_CORRECTION_STEP(myTime, myIter, myThid)
437        CALL TIMER_STOP ('THE_CORRECTION_STEP [THE_MAIN_LOOP]',myThid)        CALL TIMER_STOP ('THE_CORRECTION_STEP [FORWARD_STEP]',myThid)
438    
439  C--   Do "blocking" sends and receives for tendency "overlap" terms  C--   Do "blocking" sends and receives for tendency "overlap" terms
440  c     CALL TIMER_START('BLOCKING_EXCHANGES  [THE_MAIN_LOOP]',myThid)  c     CALL TIMER_START('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
441  c     CALL DO_GTERM_BLOCKING_EXCHANGES( myThid )  c     CALL DO_GTERM_BLOCKING_EXCHANGES( myThid )
442  c     CALL TIMER_STOP ('BLOCKING_EXCHANGES  [THE_MAIN_LOOP]',myThid)  c     CALL TIMER_STOP ('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
443    
444  C--   Do "blocking" sends and receives for field "overlap" terms  C--   Do "blocking" sends and receives for field "overlap" terms
445        CALL TIMER_START('BLOCKING_EXCHANGES  [THE_MAIN_LOOP]',myThid)        CALL TIMER_START('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
446        CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )        CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )
447        CALL TIMER_STOP ('BLOCKING_EXCHANGES  [THE_MAIN_LOOP]',myThid)        CALL TIMER_STOP ('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
448    
449    cswdptr -- add for seperate timestepping of chemical/biological/forcing
450    cswdptr    of ptracers ---
451    #ifdef ALLOW_GCHEM
452    ceh3 This is broken -- this ifdef should not be visible!
453    #ifdef PTRACERS_SEPARATE_FORCING
454    ceh3 needs an IF ( use GCHEM ) THEN
455            call GCHEM_FORCING_SEP( myTime,myIter,myThid )
456    #endif /* PTRACERS_SEPARATE_FORCING */
457    #endif /* ALLOW_GCHEM */
458    cswdptr -- end add ---
459    
460    C AMM
461    #ifdef ALLOW_GRIDALT
462            if (useGRIDALT) then
463             CALL GRIDALT_UPDATE(myThid)
464            endif
465    #endif
466    C AMM
467    
468    C AMM
469    #ifdef ALLOW_FIZHI
470            if( useFIZHI) then
471             CALL TIMER_START('FIZHI               [FORWARD_STEP]',mythid)
472             CALL STEP_FIZHI_CORR ( myTime, myIter, myThid )
473             CALL TIMER_STOP('FIZHI               [FORWARD_STEP]',mythid)
474            endif
475    #endif
476    C AMM
477    
478  #ifdef ALLOW_FLT  #ifdef ALLOW_FLT
479  C--   Calculate float trajectories  C--   Calculate float trajectories
480        IF (useFLT) THEN        IF (useFLT) THEN
481          CALL TIMER_START('FLOATS            [THE_MAIN_LOOP]',myThid)          CALL TIMER_START('FLOATS            [FORWARD_STEP]',myThid)
482          CALL FLT_MAIN(myIter,myTime, myThid)          CALL FLT_MAIN(myIter,myTime, myThid)
483          CALL TIMER_STOP ('FLOATS            [THE_MAIN_LOOP]',myThid)          CALL TIMER_STOP ('FLOATS            [FORWARD_STEP]',myThid)
484        ENDIF        ENDIF
485  #endif  #endif
486    
487  #ifndef EXCLUDE_MONITOR  #ifdef ALLOW_MONITOR
488  C--   Check status of solution (statistics, cfl, etc...)  C--   Check status of solution (statistics, cfl, etc...)
489          CALL TIMER_START('MONITOR             [FORWARD_STEP]',myThid)
490        CALL MONITOR( myIter, myTime, myThid )        CALL MONITOR( myIter, myTime, myThid )
491  #endif /* EXCLUDE_MONITOR */        CALL TIMER_STOP ('MONITOR             [FORWARD_STEP]',myThid)
492    #endif /* ALLOW_MONITOR */
493    
494    C AMM  -- Diagnostics package
495    #ifdef ALLOW_DIAGNOSTICS
496    
497           if(usediagnostics)then
498            call diagnostics_fill_state(myThid)
499           endif
500    
501    # ifdef ALLOW_PTRACERS
502          if(useptracers)then
503           call diagnostics_fill_ptracers(myThid)
504          endif
505    # endif
506    
507    #endif
508    C AMM
509    
 #ifndef ALLOW_AUTODIFF_TAMC  
510  C--   Do IO if needed.  C--   Do IO if needed.
511        CALL TIMER_START('DO_THE_MODEL_IO     [THE_MAIN_LOOP]',myThid)        CALL TIMER_START('DO_THE_MODEL_IO     [FORWARD_STEP]',myThid)
512        CALL DO_THE_MODEL_IO( myTime, myIter, myThid )        CALL DO_THE_MODEL_IO( myTime, myIter, myThid )
513        CALL TIMER_STOP ('DO_THE_MODEL_IO     [THE_MAIN_LOOP]',myThid)        CALL TIMER_STOP ('DO_THE_MODEL_IO     [FORWARD_STEP]',myThid)
514    
515  C--   Save state for restarts  C--   Save state for restarts
516  C     Note:    (jmc: is it still the case after ckp35 ?)  C     Note:    (jmc: is it still the case after ckp35 ?)
# Line 272  C     Thus a checkpoint contains U.00000 Line 525  C     Thus a checkpoint contains U.00000
525  C     etaN.0000000001 in the indexing scheme used for the model  C     etaN.0000000001 in the indexing scheme used for the model
526  C     "state" files. This example is referred to as a checkpoint  C     "state" files. This example is referred to as a checkpoint
527  C     at time level 1  C     at time level 1
528        CALL TIMER_START('WRITE_CHECKPOINT    [THE_MAIN_LOOP]',myThid)        CALL TIMER_START('WRITE_CHECKPOINT    [FORWARD_STEP]',myThid)
529          CALL PACKAGES_WRITE_PICKUP(
530         I               .FALSE., myTime, myIter, myThid )
531        CALL WRITE_CHECKPOINT(        CALL WRITE_CHECKPOINT(
532       &        .FALSE., myTime, myIter, myThid )       I               .FALSE., myTime, myIter, myThid )  
533        CALL TIMER_STOP ('WRITE_CHECKPOINT    [THE_MAIN_LOOP]',myThid)        CALL TIMER_STOP ('WRITE_CHECKPOINT    [FORWARD_STEP]',myThid)
534    
535  #endif /* ALLOW_AUTODIFF_TAMC */  #ifdef ALLOW_DEBUG
536          IF ( debugLevel .GE. debLevB )
537         &    CALL DEBUG_LEAVE('FORWARD_STEP',myThid)
538    #endif
539    
540          RETURN
541        END        END
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