/[MITgcm]/MITgcm/pkg/generic_advdiff/gad_dst3fl_adv_x.F
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Contents of /MITgcm/pkg/generic_advdiff/gad_dst3fl_adv_x.F

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Revision 1.3.2.1 - (show annotations) (download)
Tue Feb 26 16:04:48 2002 UTC (22 years, 2 months ago) by adcroft
Branch: release1
CVS Tags: release1_p13_pre, release1_p13, release1_p8, release1_p9, release1_p1, release1_p2, release1_p3, release1_p4, release1_p5, release1_p6, release1_p7, release1_chkpt44d_post, release1_p11, release1_p12, release1_p10, release1_p16, release1_p17, release1_p14, release1_p15, release1_p12_pre
Branch point for: release1_50yr
Changes since 1.3: +14 -12 lines 
Merging changes on MAIN between checkpoint43 and checkpoint43a-release1mods
Command: cvs -q update -jcheckpoint43 -jcheckpoint43a-release1mods -d -P

These changes are most of the changes between c43 and c44 except those
that occured after "12:45 11 Jan 2002". As far as I can tell it is
checkpoint43 with the following mods:

  o fix bug in mom_vi_del2uv
  o select when filters are applied ; add options to zonal_filter (data.zonfilt)  o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
  o update AIM experiments (NCEP input files)
  o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
  o added some stuff for AD
  o Jamar wet-points

This update does not contain the following mods that are in checkpoint44

  o bug fix in pkg/generic_advdiff/
    - thread related bug, bi,bj arguments in vertical advection routines
  o some changes to pkg/autodiff, pkg/cost, pkg/exf, pkg/ecco,
    verification/carbon and model/src/ related to adjoint
  o some new Matlab scripts for diagnosing model density
    - utils/matlab/dens_poly3.m and ini_poly3.m

The list of exclusions is accurate based on a "cvs diff". The list of
inclusions is based on the record in doc/tag-index which may not be complete.
1 C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/gad_dst3fl_adv_x.F,v 1.4 2001/11/08 23:39:34 heimbach Exp $
2 C $Name: $
3
4 #include "GAD_OPTIONS.h"
5
6 SUBROUTINE GAD_DST3FL_ADV_X(
7 I bi,bj,k,deltaT,
8 I uTrans, uVel,
9 I tracer,
10 O uT,
11 I myThid )
12 C /==========================================================\
13 C | SUBROUTINE GAD_DST3FL_ADV_X |
14 C | o Compute Zonal advective Flux of Tracer using |
15 C | 3rd Order DST Sceheme with flux limiting |
16 C |==========================================================|
17 IMPLICIT NONE
18
19 C == GLobal variables ==
20 #include "SIZE.h"
21 #include "GRID.h"
22 #include "GAD.h"
23
24 C == Routine arguments ==
25 INTEGER bi,bj,k
26 _RL deltaT
27 _RL uTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
28 _RL uVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
29 _RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
30 _RL uT (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
31 INTEGER myThid
32
33 C == Local variables ==
34 INTEGER i,j
35 _RL Rjm,Rj,Rjp,cfl,d0,d1,psiP,psiM,thetaP,thetaM
36
37 DO j=1-Oly,sNy+Oly
38 uT(1-Olx,j)=0.D0
39 uT(2-Olx,j)=0.D0
40 uT(sNx+Olx,j)=0.D0
41 DO i=1-Olx+2,sNx+Olx-1
42 Rjp=(tracer(i+1,j)-tracer(i,j))*maskW(i+1,j,k,bi,bj)
43 Rj =(tracer(i,j)-tracer(i-1,j))*maskW(i,j,k,bi,bj)
44 Rjm=(tracer(i-1,j)-tracer(i-2,j))*maskW(i-1,j,k,bi,bj)
45
46 cfl=abs(uVel(i,j,k,bi,bj)*deltaT*recip_dxc(i,j,bi,bj))
47 d0=(2.D0-cfl)*(1.D0-cfl)*oneSixth
48 d1=(1.D0-cfl*cfl)*oneSixth
49 c thetaP=0.D0
50 c IF (Rj.NE.0.D0) thetaP=Rjm/Rj
51 thetaP=Rjm/(1.D-20+Rj)
52 psiP=d0+d1*thetaP
53 psiP=max(0.D0, min(min(1.D0,psiP),
54 & (1.D0-cfl)/(1.D-20+cfl)*thetaP))
55 thetaM=Rjp/(1.D-20+Rj)
56 c thetaM=0.D0
57 c IF (Rj.NE.0.D0) thetaM=Rjp/Rj
58 psiM=d0+d1*thetaM
59 psiM=max(0.D0, min(min(1.D0,psiM),
60 & (1.D0-cfl)/(1.D-20+cfl)*thetaM))
61 uT(i,j)=
62 & 0.5*(uTrans(i,j)+abs(uTrans(i,j)))
63 & *( Tracer(i-1,j) + psiP*Rj )
64 & +0.5*(uTrans(i,j)-abs(uTrans(i,j)))
65 & *( Tracer( i ,j) - psiM*Rj )
66
67 ENDDO
68 ENDDO
69
70 RETURN
71 END
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