/[MITgcm]/MITgcm/model/src/calc_gt.F
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Annotation of /MITgcm/model/src/calc_gt.F

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Revision 1.37 - (hide annotations) (download)
Sat Jun 15 03:28:39 2002 UTC (22 years ago) by jmc
Branch: MAIN
Changes since 1.36: +16 -9 lines
Add new flags:
* T,S forcing outside Adams-Bashforh
* temp,salt Advection and Forcing (turn on/off)
* for each tracer: internal flag for multiDimAdvection & A-B

1 jmc 1.37 C $Header: /u/gcmpack/MITgcm/model/src/calc_gt.F,v 1.36 2001/09/26 18:09:14 cnh Exp $
2 adcroft 1.35 C $Name: $
3 cnh 1.1
4 cnh 1.19 #include "CPP_OPTIONS.h"
5 cnh 1.1
6 cnh 1.36 CBOP
7     C !ROUTINE: CALC_GT
8     C !INTERFACE:
9 cnh 1.1 SUBROUTINE CALC_GT(
10     I bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
11 adcroft 1.32 I xA,yA,uTrans,vTrans,rTrans,maskUp,
12 adcroft 1.25 I KappaRT,
13 adcroft 1.28 U fVerT,
14 adcroft 1.35 I myTime,myIter,myThid )
15 cnh 1.36 C !DESCRIPTION: \bv
16     C *==========================================================*
17     C | SUBROUTINE CALC_GT
18     C | o Calculate the temperature tendency terms.
19     C *==========================================================*
20     C | A procedure called EXTERNAL_FORCING_T is called from
21     C | here. These procedures can be used to add per problem
22     C | heat flux source terms.
23     C | Note: Although it is slightly counter-intuitive the
24     C | EXTERNAL_FORCING routine is not the place to put
25     C | file I/O. Instead files that are required to
26     C | calculate the external source terms are generally
27     C | read during the model main loop. This makes the
28     C | logisitics of multi-processing simpler and also
29     C | makes the adjoint generation simpler. It also
30     C | allows for I/O to overlap computation where that
31     C | is supported by hardware.
32     C | Aside from the problem specific term the code here
33     C | forms the tendency terms due to advection and mixing
34     C | The baseline implementation here uses a centered
35     C | difference form for the advection term and a tensorial
36     C | divergence of a flux form for the diffusive term. The
37     C | diffusive term is formulated so that isopycnal mixing and
38     C | GM-style subgrid-scale terms can be incorporated b simply
39     C | setting the diffusion tensor terms appropriately.
40     C *==========================================================*
41     C \ev
42    
43     C !USES:
44 cnh 1.1 IMPLICIT NONE
45     C == GLobal variables ==
46     #include "SIZE.h"
47     #include "DYNVARS.h"
48     #include "EEPARAMS.h"
49     #include "PARAMS.h"
50 adcroft 1.34 #include "GAD.h"
51 cnh 1.1
52 cnh 1.36 C !INPUT/OUTPUT PARAMETERS:
53 cnh 1.1 C == Routine arguments ==
54 cnh 1.36 C fVerT :: Flux of temperature (T) in the vertical
55     C direction at the upper(U) and lower(D) faces of a cell.
56     C maskUp :: Land mask used to denote base of the domain.
57     C xA :: Tracer cell face area normal to X
58     C yA :: Tracer cell face area normal to X
59     C uTrans :: Zonal volume transport through cell face
60     C vTrans :: Meridional volume transport through cell face
61     C rTrans :: Vertical volume transport through cell face
62     C bi, bj, iMin, iMax, jMin, jMax :: Range of points for which calculation
63     C results will be set.
64     C myThid :: Instance number for this innvocation of CALC_GT
65 cnh 1.1 _RL fVerT (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
66     _RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
67     _RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
68     _RL uTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
69     _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
70 cnh 1.14 _RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
71 cnh 1.1 _RS maskUp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
72 cnh 1.16 _RL KappaRT(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
73 adcroft 1.3 INTEGER k,kUp,kDown,kM1
74 cnh 1.1 INTEGER bi,bj,iMin,iMax,jMin,jMax
75 adcroft 1.35 _RL myTime
76     INTEGER myIter
77 cnh 1.1 INTEGER myThid
78 cnh 1.36 CEOP
79 heimbach 1.24
80 jmc 1.37 C === Local variables ===
81     LOGICAL calcAdvection
82    
83 heimbach 1.24 #ifdef ALLOW_AUTODIFF_TAMC
84     C-- only the kUp part of fverT is set in this subroutine
85     C-- the kDown is still required
86     fVerT(1,1,kDown) = fVerT(1,1,kDown)
87 adcroft 1.20 #endif
88 cnh 1.1
89 jmc 1.37 calcAdvection = tempAdvection .AND. .NOT.tempMultiDimAdvec
90 adcroft 1.34 CALL GAD_CALC_RHS(
91     I bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
92     I xA,yA,uTrans,vTrans,rTrans,maskUp,
93     I diffKhT, diffK4T, KappaRT, theta,
94 jmc 1.37 I GAD_TEMPERATURE, tempAdvScheme, calcAdvection,
95 adcroft 1.34 U fVerT, gT,
96     I myThid )
97 cnh 1.1
98 jmc 1.37 C-- External thermal forcing term(s) inside Adams-Bashforth:
99     IF ( tempForcing .AND. forcing_In_AB )
100     & CALL EXTERNAL_FORCING_T(
101 cnh 1.19 I iMin,iMax,jMin,jMax,bi,bj,k,
102 adcroft 1.35 I myTime,myThid)
103    
104 jmc 1.37 IF ( tempAdamsBashforth ) THEN
105 adcroft 1.35 CALL ADAMS_BASHFORTH2(
106     I bi, bj, K,
107     U gT, gTnm1,
108     I myIter, myThid )
109     ENDIF
110 jmc 1.37
111     C-- External thermal forcing term(s) outside Adams-Bashforth:
112     IF ( tempForcing .AND. .NOT.forcing_In_AB )
113     & CALL EXTERNAL_FORCING_T(
114     I iMin,iMax,jMin,jMax,bi,bj,k,
115     I myTime,myThid)
116 adcroft 1.35
117     #ifdef NONLIN_FRSURF
118     IF (nonlinFreeSurf.GT.0) THEN
119     CALL FREESURF_RESCALE_G(
120     I bi, bj, K,
121     U gT,
122     I myThid )
123     ENDIF
124     #endif /* NONLIN_FRSURF */
125 cnh 1.1
126     RETURN
127     END

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