1 |
adcroft |
1.2 |
C $Header: /u/gcmpack/models/MITgcmUV/model/src/timestep_tracer.F,v 1.1.2.1 2001/04/09 16:08:35 jmc Exp $ |
2 |
|
|
C $Name: $ |
3 |
adcroft |
1.1 |
|
4 |
|
|
#include "CPP_OPTIONS.h" |
5 |
|
|
|
6 |
adcroft |
1.2 |
SUBROUTINE TIMESTEP_TRACER( |
7 |
|
|
I bi, bj, iMin, iMax, jMin, jMax, K, tauAB, |
8 |
|
|
U tracer, gTracer, gTrNm1, |
9 |
|
|
I myIter, myThid ) |
10 |
adcroft |
1.1 |
C /==========================================================\ |
11 |
|
|
C | S/R TIMESTEP_TRACER | |
12 |
|
|
C | o Step model tracer field forward in time | |
13 |
|
|
C \==========================================================/ |
14 |
adcroft |
1.2 |
IMPLICIT NONE |
15 |
|
|
|
16 |
|
|
C == Global variables === |
17 |
adcroft |
1.1 |
#include "SIZE.h" |
18 |
|
|
#include "EEPARAMS.h" |
19 |
|
|
#include "PARAMS.h" |
20 |
adcroft |
1.2 |
|
21 |
adcroft |
1.1 |
C == Routine Arguments == |
22 |
adcroft |
1.2 |
C tauAB - Adams-Bashforth timestepping weight: 0=forward ; 1/2=Adams-Bashf. |
23 |
adcroft |
1.1 |
INTEGER bi,bj,iMin,iMax,jMin,jMax,K |
24 |
adcroft |
1.2 |
_RL tauAB |
25 |
adcroft |
1.1 |
_RL tracer (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
26 |
|
|
_RL gTracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
27 |
|
|
_RL gTrNm1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
28 |
|
|
INTEGER myIter, myThid |
29 |
|
|
C == Local variables == |
30 |
|
|
INTEGER i,j |
31 |
|
|
_RL ab15,ab05 |
32 |
|
|
|
33 |
|
|
C Adams-Bashforth timestepping weights |
34 |
adcroft |
1.2 |
ab15 = 1.+ tauAB |
35 |
|
|
ab05 = -tauAB |
36 |
adcroft |
1.1 |
|
37 |
|
|
C Step forward temperature |
38 |
|
|
DO j=jMin,jMax |
39 |
|
|
DO i=iMin,iMax |
40 |
|
|
gTrNm1(i,j,k,bi,bj)=tracer(i,j,k,bi,bj) |
41 |
|
|
& +deltaTtracer*( |
42 |
|
|
& ab15*gTracer(i,j,k,bi,bj) |
43 |
|
|
& +ab05*gTrNm1(i,j,k,bi,bj) ) |
44 |
|
|
ENDDO |
45 |
|
|
ENDDO |
46 |
|
|
|
47 |
|
|
RETURN |
48 |
|
|
END |