/[MITgcm]/MITgcm/pkg/ptracers/ptracers_integrate.F
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Revision 1.19 - (hide annotations) (download)
Thu Oct 28 00:33:56 2004 UTC (19 years, 7 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint56, checkpoint55i_post, checkpoint55j_post
Changes since 1.18: +3 -7 lines
each ptracer uses its own background vertical diffusivity

1 jmc 1.19 C $Header: /u/gcmpack/MITgcm/pkg/ptracers/ptracers_integrate.F,v 1.18 2004/10/21 21:26:58 jmc Exp $
2 adcroft 1.2 C $Name: $
3 adcroft 1.1
4     #include "PTRACERS_OPTIONS.h"
5 stephd 1.6 cswdptr -- add ---
6 heimbach 1.7 #ifdef ALLOW_GCHEM
7     # include "GCHEM_OPTIONS.h"
8     #endif
9 stephd 1.6 cswdptr -- end add ---
10 adcroft 1.1
11     CBOP
12 heimbach 1.7 C !ROUTINE: PTRACERS_INTEGRATE
13 adcroft 1.1
14     C !INTERFACE: ==========================================================
15 heimbach 1.7 SUBROUTINE PTRACERS_INTEGRATE(
16 adcroft 1.1 I bi,bj,k,
17 jmc 1.13 I xA,yA,uTrans,vTrans,rTrans,
18     I rTransKp1,maskUp,
19 heimbach 1.11 X rFlx,KappaRtr,
20 adcroft 1.1 I myIter,myTime,myThid )
21    
22     C !DESCRIPTION:
23     C Calculates tendancy for passive tracers and integrates forward
24     C in time.
25    
26     C !USES: ===============================================================
27     IMPLICIT NONE
28     #include "SIZE.h"
29     #include "EEPARAMS.h"
30 adcroft 1.5 #include "PARAMS.h"
31 jmc 1.13 #include "DYNVARS.h"
32 jmc 1.15 #include "PTRACERS_SIZE.h"
33 adcroft 1.1 #include "PTRACERS.h"
34     #include "GAD.h"
35    
36     C !INPUT PARAMETERS: ===================================================
37     C bi,bj :: tile indices
38     C k :: vertical level number
39     C xA :: face area at U points in level k
40     C yA :: face area at V points in level k
41     C uTrans :: zonal transport in level k
42     C vTrans :: meridional transport in level k
43 jmc 1.13 C rTrans :: vertical volume transport at interface k
44     C rTransKp1 :: vertical volume transport at interface k+1
45 adcroft 1.1 C maskUp :: mask for vertical transport
46 jmc 1.12 C rFlx :: vertical flux
47 jmc 1.18 C KappaRtr :: vertical diffusion of passive tracers, interf k
48 adcroft 1.1 C myIter :: time-step number
49     C myTime :: model time
50     C myThid :: thread number
51     INTEGER bi,bj,k
52     _RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
53     _RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
54     _RL uTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
55     _RL vTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
56     _RL rTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
57 jmc 1.13 _RL rTransKp1(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
58 adcroft 1.1 _RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
59 jmc 1.12 _RL rFlx(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2,PTRACERS_num)
60 jmc 1.19 _RL KappaRtr(1-Olx:sNx+Olx,1-Oly:sNy+Oly,PTRACERS_num)
61 adcroft 1.1 INTEGER myIter
62     _RL myTime
63     INTEGER myThid
64    
65     C !OUTPUT PARAMETERS: ==================================================
66     C none
67    
68     #ifdef ALLOW_PTRACERS
69    
70     C !LOCAL VARIABLES: ====================================================
71     C i,j,k,bi,bj,iTracer :: loop indices
72     C iMin,iMax,jMin,jMax :: loop ranges
73     C kUp,kDown :: toggle indices for even/odd level fluxes
74     C km1 :: =min(1,k-1)
75 dimitri 1.8 C GAD_TR :: passive tracer id (GAD_TR1+iTracer-1)
76 adcroft 1.1 INTEGER i,j,iTracer
77     INTEGER iMin,iMax,jMin,jMax
78     INTEGER kUp,kDown,km1
79 dimitri 1.8 INTEGER GAD_TR
80 jmc 1.3 LOGICAL calcAdvection
81 adcroft 1.1 CEOP
82    
83     C Loop over tracers
84     DO iTracer=1,PTRACERS_numInUse
85    
86     C Loop ranges for daughter routines
87     iMin = 1-OLx+2
88     iMax = sNx+OLx-1
89     jMin = 1-OLy+2
90     jMax = sNy+OLy-1
91    
92     km1 = MAX(1,k-1)
93     kUp = 1+MOD(k+1,2)
94     kDown= 1+MOD(k,2)
95    
96     C Calculate active tracer tendencies (gPtr) due to internal processes
97     C (advection, [explicit] diffusion, parameterizations,...)
98 jmc 1.3 calcAdvection = .NOT.multiDimAdvection
99     & .OR. PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_2ND
100     & .OR. PTRACERS_advScheme(iTracer).EQ.ENUM_UPWIND_3RD
101     & .OR. PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_4TH
102 dimitri 1.8 GAD_TR = GAD_TR1 + iTracer - 1
103 jmc 1.13 CALL GAD_CALC_RHS(
104     I bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
105     I xA,yA,uTrans,vTrans,rTrans,rTransKp1,maskUp,
106     I uVel, vVel, wVel,
107     I PTRACERS_diffKh(iTracer),
108     I PTRACERS_diffK4(iTracer),
109 jmc 1.19 I KappaRtr(1-Olx,1-Oly,iTracer),
110 jmc 1.13 I pTracer(1-Olx,1-Oly,1,1,1,iTracer),
111     I GAD_TR,
112     I PTRACERS_advScheme(iTracer),
113 jmc 1.14 I PTRACERS_advScheme(iTracer),
114 jmc 1.13 I calcAdvection, .FALSE.,
115     U rFlx(1-Olx,1-Oly,1,iTracer),
116     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
117 jmc 1.17 I myTime, myIter, myThid )
118 adcroft 1.1
119     C External forcing term(s)
120 stephd 1.10 cswdptr --add --
121     #ifdef ALLOW_GCHEM
122     #ifndef PTRACERS_SEPARATE_FORCING
123     IF ( forcing_In_AB )
124     & CALL GCHEM_FORCING_INT(
125     I bi,bj,iMin,iMax,jMin,jMax,k,
126     I iTracer,
127     I myTime,myIter, myThid)
128     #endif
129     #else
130 stephd 1.6 cswdptr - end add ---
131 jmc 1.3 IF ( forcing_In_AB )
132     & CALL PTRACERS_FORCING(
133 heimbach 1.11 I bi,bj,iMin,iMax,jMin,jMax,k,
134     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
135 jmc 1.16 I surfaceForcingPtr(1-Olx,1-Oly,1,1,iTracer),
136 heimbach 1.11 I myIter,myTime,myThid)
137 stephd 1.6 cswdptr --add---
138     #endif
139     cswdptr -- end add ---
140 adcroft 1.1
141     C If using Adams-Bashforth II, then extrapolate tendancies
142     IF ( PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_2ND
143     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_UPWIND_3RD
144     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_4TH ) THEN
145     CALL ADAMS_BASHFORTH2(
146     I bi,bj,K,
147     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
148     U gPtrNm1(1-Olx,1-Oly,1,1,1,iTracer),
149     I myIter,myThid )
150     ENDIF
151 jmc 1.3
152     C External forcing term(s)
153 stephd 1.6 cswdptr - add--
154 stephd 1.10 #ifdef ALLOW_GCHEM
155     #ifndef PTRACERS_SEPARATE_FORCING
156     IF ( .NOT.forcing_In_AB )
157     & CALL GCHEM_FORCING_INT(
158     I bi,bj,iMin,iMax,jMin,jMax,k,
159     I iTracer,
160     I myTime,myIter, myThid)
161     #endif
162     #else
163 stephd 1.6 cswdptr - end add ---
164 jmc 1.3 IF ( .NOT.forcing_In_AB )
165     & CALL PTRACERS_FORCING(
166 heimbach 1.11 I bi,bj,iMin,iMax,jMin,jMax,k,
167     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
168 jmc 1.16 I surfaceForcingPtr(1-Olx,1-Oly,1,1,iTracer),
169 heimbach 1.11 I myIter,myTime,myThid)
170 stephd 1.6 cswdptr - add--
171     #endif
172     cswdptr -- end add ---
173 adcroft 1.1
174     #ifdef NONLIN_FRSURF
175     C Account for change in level thickness
176     IF (nonlinFreeSurf.GT.0) THEN
177     CALL FREESURF_RESCALE_G(
178     I bi,bj,K,
179     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
180 jmc 1.4 I myThid )
181     IF ( PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_2ND
182     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_UPWIND_3RD
183     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_4TH )
184     & CALL FREESURF_RESCALE_G(
185     I bi,bj,K,
186     U gPtrNm1(1-Olx,1-Oly,1,1,1,iTracer),
187 adcroft 1.1 I myThid )
188     ENDIF
189     #endif /* NONLIN_FRSURF */
190    
191     C Integrate forward in time, storing in gPtr: G=T+dt*G
192     CALL TIMESTEP_TRACER(
193     I bi,bj,iMin,iMax,jMin,jMax,k,
194     I PTRACERS_advScheme(iTracer),
195     I pTracer(1-Olx,1-Oly,1,1,1,iTracer),
196     I gPtr(1-Olx,1-Oly,1,1,1,iTracer),
197     I myIter,myThid )
198    
199     C end of tracer loop
200     ENDDO
201    
202     #endif /* ALLOW_PTRACERS */
203    
204     RETURN
205     END

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