/[MITgcm]/MITgcm/pkg/ptracers/ptracers_integrate.F
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Revision 1.21 - (hide annotations) (download)
Tue Nov 23 20:21:13 2004 UTC (19 years, 6 months ago) by mlosch
Branch: MAIN
CVS Tags: checkpoint56b_post, checkpoint56a_post, checkpoint56c_post
Changes since 1.20: +3 -36 lines 
  - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
    this flag is now only visible within GCHEM-pkg routines.
  - moved gchem_forcing_int temporarily into ptracers_forcing, this will
    be replaced by a 3D array that is computed before thermodynamics; for
    this, the tracer ID iTracer had to be included into the parameter list
    of ptracers_forcing
  - cleaning up
1 mlosch 1.21 C $Header: /u/gcmpack/MITgcm/pkg/ptracers/ptracers_integrate.F,v 1.20 2004/11/19 01:34:27 mlosch Exp $
2 adcroft 1.2 C $Name: $
3 adcroft 1.1
4     #include "PTRACERS_OPTIONS.h"
5    
6     CBOP
7 heimbach 1.7 C !ROUTINE: PTRACERS_INTEGRATE
8 adcroft 1.1
9     C !INTERFACE: ==========================================================
10 heimbach 1.7 SUBROUTINE PTRACERS_INTEGRATE(
11 adcroft 1.1 I bi,bj,k,
12 jmc 1.13 I xA,yA,uTrans,vTrans,rTrans,
13     I rTransKp1,maskUp,
14 heimbach 1.11 X rFlx,KappaRtr,
15 adcroft 1.1 I myIter,myTime,myThid )
16    
17     C !DESCRIPTION:
18     C Calculates tendancy for passive tracers and integrates forward
19     C in time.
20    
21     C !USES: ===============================================================
22     IMPLICIT NONE
23     #include "SIZE.h"
24     #include "EEPARAMS.h"
25 adcroft 1.5 #include "PARAMS.h"
26 jmc 1.13 #include "DYNVARS.h"
27 jmc 1.15 #include "PTRACERS_SIZE.h"
28 adcroft 1.1 #include "PTRACERS.h"
29     #include "GAD.h"
30    
31     C !INPUT PARAMETERS: ===================================================
32     C bi,bj :: tile indices
33     C k :: vertical level number
34     C xA :: face area at U points in level k
35     C yA :: face area at V points in level k
36     C uTrans :: zonal transport in level k
37     C vTrans :: meridional transport in level k
38 jmc 1.13 C rTrans :: vertical volume transport at interface k
39     C rTransKp1 :: vertical volume transport at interface k+1
40 adcroft 1.1 C maskUp :: mask for vertical transport
41 jmc 1.12 C rFlx :: vertical flux
42 jmc 1.18 C KappaRtr :: vertical diffusion of passive tracers, interf k
43 adcroft 1.1 C myIter :: time-step number
44     C myTime :: model time
45     C myThid :: thread number
46     INTEGER bi,bj,k
47     _RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
48     _RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
49     _RL uTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
50     _RL vTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
51     _RL rTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
52 jmc 1.13 _RL rTransKp1(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
53 adcroft 1.1 _RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
54 jmc 1.12 _RL rFlx(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2,PTRACERS_num)
55 jmc 1.19 _RL KappaRtr(1-Olx:sNx+Olx,1-Oly:sNy+Oly,PTRACERS_num)
56 adcroft 1.1 INTEGER myIter
57     _RL myTime
58     INTEGER myThid
59    
60     C !OUTPUT PARAMETERS: ==================================================
61     C none
62    
63     #ifdef ALLOW_PTRACERS
64    
65     C !LOCAL VARIABLES: ====================================================
66     C i,j,k,bi,bj,iTracer :: loop indices
67     C iMin,iMax,jMin,jMax :: loop ranges
68     C kUp,kDown :: toggle indices for even/odd level fluxes
69     C km1 :: =min(1,k-1)
70 dimitri 1.8 C GAD_TR :: passive tracer id (GAD_TR1+iTracer-1)
71 adcroft 1.1 INTEGER i,j,iTracer
72     INTEGER iMin,iMax,jMin,jMax
73     INTEGER kUp,kDown,km1
74 dimitri 1.8 INTEGER GAD_TR
75 jmc 1.3 LOGICAL calcAdvection
76 adcroft 1.1 CEOP
77    
78     C Loop over tracers
79     DO iTracer=1,PTRACERS_numInUse
80    
81     C Loop ranges for daughter routines
82     iMin = 1-OLx+2
83     iMax = sNx+OLx-1
84     jMin = 1-OLy+2
85     jMax = sNy+OLy-1
86    
87     km1 = MAX(1,k-1)
88     kUp = 1+MOD(k+1,2)
89     kDown= 1+MOD(k,2)
90    
91     C Calculate active tracer tendencies (gPtr) due to internal processes
92     C (advection, [explicit] diffusion, parameterizations,...)
93 jmc 1.3 calcAdvection = .NOT.multiDimAdvection
94     & .OR. PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_2ND
95     & .OR. PTRACERS_advScheme(iTracer).EQ.ENUM_UPWIND_3RD
96     & .OR. PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_4TH
97 dimitri 1.8 GAD_TR = GAD_TR1 + iTracer - 1
98 jmc 1.13 CALL GAD_CALC_RHS(
99     I bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
100     I xA,yA,uTrans,vTrans,rTrans,rTransKp1,maskUp,
101     I uVel, vVel, wVel,
102     I PTRACERS_diffKh(iTracer),
103     I PTRACERS_diffK4(iTracer),
104 jmc 1.19 I KappaRtr(1-Olx,1-Oly,iTracer),
105 jmc 1.13 I pTracer(1-Olx,1-Oly,1,1,1,iTracer),
106     I GAD_TR,
107     I PTRACERS_advScheme(iTracer),
108 jmc 1.14 I PTRACERS_advScheme(iTracer),
109 jmc 1.13 I calcAdvection, .FALSE.,
110     U rFlx(1-Olx,1-Oly,1,iTracer),
111     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
112 jmc 1.17 I myTime, myIter, myThid )
113 adcroft 1.1
114     C External forcing term(s)
115 jmc 1.3 IF ( forcing_In_AB )
116     & CALL PTRACERS_FORCING(
117 mlosch 1.21 I bi,bj,iMin,iMax,jMin,jMax,k,iTracer,
118 heimbach 1.11 U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
119 jmc 1.16 I surfaceForcingPtr(1-Olx,1-Oly,1,1,iTracer),
120 heimbach 1.11 I myIter,myTime,myThid)
121 adcroft 1.1
122     C If using Adams-Bashforth II, then extrapolate tendancies
123     IF ( PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_2ND
124     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_UPWIND_3RD
125     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_4TH ) THEN
126     CALL ADAMS_BASHFORTH2(
127     I bi,bj,K,
128     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
129     U gPtrNm1(1-Olx,1-Oly,1,1,1,iTracer),
130     I myIter,myThid )
131     ENDIF
132 jmc 1.3
133     C External forcing term(s)
134     IF ( .NOT.forcing_In_AB )
135     & CALL PTRACERS_FORCING(
136 mlosch 1.21 I bi,bj,iMin,iMax,jMin,jMax,k,iTracer,
137 heimbach 1.11 U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
138 jmc 1.16 I surfaceForcingPtr(1-Olx,1-Oly,1,1,iTracer),
139 heimbach 1.11 I myIter,myTime,myThid)
140 adcroft 1.1
141     #ifdef NONLIN_FRSURF
142     C Account for change in level thickness
143     IF (nonlinFreeSurf.GT.0) THEN
144     CALL FREESURF_RESCALE_G(
145     I bi,bj,K,
146     U gPtr(1-Olx,1-Oly,1,1,1,iTracer),
147 jmc 1.4 I myThid )
148     IF ( PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_2ND
149     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_UPWIND_3RD
150     & .OR.PTRACERS_advScheme(iTracer).EQ.ENUM_CENTERED_4TH )
151     & CALL FREESURF_RESCALE_G(
152     I bi,bj,K,
153     U gPtrNm1(1-Olx,1-Oly,1,1,1,iTracer),
154 adcroft 1.1 I myThid )
155     ENDIF
156     #endif /* NONLIN_FRSURF */
157    
158     C Integrate forward in time, storing in gPtr: G=T+dt*G
159     CALL TIMESTEP_TRACER(
160     I bi,bj,iMin,iMax,jMin,jMax,k,
161     I PTRACERS_advScheme(iTracer),
162     I pTracer(1-Olx,1-Oly,1,1,1,iTracer),
163     I gPtr(1-Olx,1-Oly,1,1,1,iTracer),
164     I myIter,myThid )
165    
166     C end of tracer loop
167     ENDDO
168    
169     #endif /* ALLOW_PTRACERS */
170    
171     RETURN
172     END
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