/[MITgcm]/MITgcm/pkg/generic_advdiff/gad_dst3_adv_y.F
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Revision 1.3 - (hide annotations) (download)
Wed Mar 6 01:29:36 2002 UTC (22 years, 2 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint46n_post, checkpoint51k_post, checkpoint47e_post, checkpoint52l_pre, hrcube4, hrcube5, checkpoint46l_post, checkpoint46g_pre, checkpoint47c_post, checkpoint50c_post, checkpoint46f_post, checkpoint52d_pre, checkpoint48e_post, checkpoint50c_pre, checkpoint46b_post, checkpoint52j_pre, checkpoint51o_pre, checkpoint54d_post, checkpoint54e_post, checkpoint51l_post, checkpoint48i_post, checkpoint46l_pre, checkpoint52l_post, checkpoint52k_post, checkpoint55, checkpoint54, checkpoint51, checkpoint50, checkpoint53, checkpoint52, checkpoint50d_post, checkpoint52f_post, checkpoint50b_pre, checkpoint54f_post, checkpoint51f_post, checkpoint48b_post, checkpoint51d_post, checkpoint48c_pre, checkpoint47d_pre, checkpoint51t_post, checkpoint51n_post, checkpoint52i_pre, hrcube_1, hrcube_2, hrcube_3, checkpoint51s_post, checkpoint47a_post, checkpoint55c_post, checkpoint48d_pre, checkpoint51j_post, checkpoint47i_post, checkpoint52e_pre, checkpoint52e_post, checkpoint51n_pre, checkpoint47d_post, checkpoint53d_post, checkpoint46d_pre, checkpoint48d_post, checkpoint48f_post, checkpoint45d_post, checkpoint52b_pre, checkpoint54b_post, checkpoint46j_pre, checkpoint51l_pre, checkpoint52m_post, checkpoint44h_pre, checkpoint48h_post, checkpoint51q_post, checkpoint51b_pre, checkpoint46a_post, checkpoint47g_post, checkpoint52b_post, checkpoint52c_post, checkpoint46j_post, checkpoint51h_pre, checkpoint46k_post, checkpoint48a_post, checkpoint45a_post, checkpoint50f_post, checkpoint50a_post, checkpoint50f_pre, checkpoint52f_pre, checkpoint47j_post, checkpoint54a_pre, checkpoint53c_post, branch-exfmods-tag, branchpoint-genmake2, checkpoint54a_post, checkpoint46e_pre, checkpoint51r_post, checkpoint48c_post, checkpoint45b_post, checkpoint46b_pre, checkpoint51i_post, checkpoint55b_post, checkpoint51b_post, checkpoint51c_post, checkpoint46c_pre, checkpoint53a_post, checkpoint46, checkpoint47b_post, checkpoint46h_pre, checkpoint52d_post, checkpoint53g_post, checkpoint46m_post, checkpoint46a_pre, checkpoint50g_post, checkpoint45c_post, checkpoint44h_post, checkpoint46g_post, checkpoint52a_pre, checkpoint50h_post, checkpoint52i_post, checkpoint50e_pre, checkpoint50i_post, checkpoint51i_pre, checkpoint52h_pre, checkpoint53f_post, checkpoint52j_post, checkpoint47f_post, checkpoint50e_post, checkpoint46i_post, checkpoint46c_post, branch-netcdf, checkpoint50d_pre, checkpoint52n_post, checkpoint53b_pre, checkpoint46e_post, checkpoint51e_post, checkpoint55a_post, checkpoint47, checkpoint45, checkpoint48, checkpoint49, checkpoint46h_post, checkpoint51o_post, checkpoint51f_pre, checkpoint48g_post, checkpoint53b_post, checkpoint47h_post, checkpoint52a_post, checkpoint51g_post, ecco_c52_e35, checkpoint46d_post, checkpoint50b_post, checkpoint51m_post, checkpoint53d_pre, checkpoint54c_post, checkpoint51a_post, checkpoint51p_post, checkpoint51u_post
Branch point for: branch-exfmods-curt, branch-genmake2, branch-nonh, tg2-branch, netcdf-sm0, checkpoint51n_branch
Changes since 1.2: +8 -3 lines 
re-compute velocity (uFld,vFld,wFld) from uTrans,vTrans,rTrans
1 jmc 1.3 C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/gad_dst3_adv_y.F,v 1.2 2001/09/10 00:14:05 adcroft Exp $
2     C $Name: $
3 adcroft 1.1
4     #include "GAD_OPTIONS.h"
5    
6     SUBROUTINE GAD_DST3_ADV_Y(
7     I bi,bj,k,deltaT,
8     I vTrans, vVel,
9     I tracer,
10     O vT,
11     I myThid )
12     C /==========================================================\
13     C | SUBROUTINE GAD_DST3_ADV_Y |
14     C | o Compute Meridional advective Flux of Tracer using |
15     C | 3rd Order DST Sceheme |
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 vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
28     _RL vVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
29     _RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
30     _RL vT (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
31     INTEGER myThid
32    
33     C == Local variables ==
34 jmc 1.3 C vFld :: velocity [m/s], meridional component
35 adcroft 1.1 INTEGER i,j
36     _RL Rjm,Rj,Rjp,cfl,d0,d1
37 adcroft 1.2 _RL psiP,psiM,thetaP,thetaM
38 jmc 1.3 _RL vFld
39 adcroft 1.1
40     DO i=1-Olx,sNx+Olx
41     vT(i,1-Oly)=0.
42     vT(i,2-Oly)=0.
43     vT(i,sNy+Oly)=0.
44     ENDDO
45     DO j=1-Oly+2,sNy+Oly-1
46     DO i=1-Olx,sNx+Olx
47     Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj)
48     Rj =(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj)
49     Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj)
50    
51 jmc 1.3 c vFld = vVel(i,j,k,bi,bj)
52     vFld = vTrans(i,j)*recip_dxG(i,j,bi,bj)
53     & *recip_drF(k)*recip_hFacS(i,j,k,bi,bj)
54     cfl=abs(vFld*deltaT*recip_dyC(i,j,bi,bj))
55 adcroft 1.2 d0=(2.-cfl)*(1.-cfl)*oneSixth
56     d1=(1.-cfl*cfl)*oneSixth
57     c thetaP=0.
58     c IF (Rj.NE.0.) thetaP=Rjm/Rj
59     thetaP=Rjm/(1.D-20+Rj)
60     psiP=d0+d1*thetaP
61     c psiP=max(0.,min(min(1.,psiP),(1.-cfl)/(1.D-20+cfl)*thetaP))
62     thetaM=Rjp/(1.D-20+Rj)
63     c thetaM=0.
64     c IF (Rj.NE.0.) thetaM=Rjp/Rj
65     psiM=d0+d1*thetaM
66     c psiM=max(0.,min(min(1.,psiM),(1.-cfl)/(1.D-20+cfl)*thetaM))
67 adcroft 1.1 vT(i,j)=
68     & 0.5*(vTrans(i,j)+abs(vTrans(i,j)))
69 adcroft 1.2 & *( Tracer(i,j-1) + psiP*Rj )
70 adcroft 1.1 & +0.5*(vTrans(i,j)-abs(vTrans(i,j)))
71 adcroft 1.2 & *( Tracer(i, j ) - psiM*Rj )
72 adcroft 1.1
73     ENDDO
74     ENDDO
75    
76     RETURN
77     END
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