/[MITgcm]/MITgcm_contrib/jscott/igsm/src_chem/chemshap2d.F
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Revision 1.1 - (show annotations) (download)
Thu Sep 17 17:40:33 2009 UTC (15 years, 10 months ago) by jscott
Branch: MAIN
CVS Tags: HEAD
chem module archive

1
2 #include "ctrparam.h"
3
4 ! ============================================================
5 !
6 ! CHEMSHAP2D.F: A revised version of SHAP2D.F which is a
7 ! subroutine for applying Shapiro (2d)
8 ! smoothing of MIT Global Chemistry Model
9 !
10 ! ------------------------------------------------------------
11 !
12 ! Author: Chien Wang
13 ! MIT Joint Program on Science and Policy
14 ! of Global Change
15 !
16 ! ----------------------------------------------------------
17 !
18 ! Revision History:
19 !
20 ! When Who What
21 ! ---- ---------- -------
22 ! 080494 Chien Wang rev.
23 ! 080200 Chien Wang repack based on CliChem3 & add cpp
24 !
25 ! ==========================================================
26
27 subroutine chemshap2d (MFILTR,NORDER,XXX,IM,JM,J1,ITYPE) 8590.
28
29 COMMON/WORK2/X1JI(72,46),X2JI(72,46),X3JI(72,46),X1(72),X2(72),
30 * X3(72),X4(72),XM1(72),XJMP1(72)
31
32 ! ----------------------------------------------------------
33
34 #if ( defined CPL_CHEM )
35
36 C VARIABLE ITYPE DETERMINES TYPE OF BOUNDARY CONDITIONS
37 C ITYPE=1 FOR PS,T AND Q ( XM1=X2)
38 C ITYPE=2 FOR U (XM1=X1)
39 C ITYPE=3 FOR V (XM1=-X1)
40
41 JMM1=JM-1
42 J2=J1+1
43 IMBY2=1
44 DO 145 N=1,NORDER
45
46 DO 146 K=1,IM
47 X1(K)=X1JI(K,J1)
48 X2(K)=X1JI(K,J2)
49 X3(K)=X1JI(K,JMM1)
50 X4(K)=X1JI(K,JM)
51 IF(ITYPE.EQ.1)THEN
52 XM1(K)=X1JI(K,J2)
53 XJMP1(K)=X1JI(K,JMM1)
54 ELSEIF(ITYPE.EQ.2)THEN
55 XM1(K)=X1JI(K,J1)
56 XJMP1(K)=X1JI(K,JM)
57 ELSE
58 XM1(K)=-X1JI(K,J1)
59 XJMP1(K)=-X1JI(K,JM)
60 ENDIF
61 146 CONTINUE
62
63 DO 142 I=1,IM
64 X1IM1=X1JI(I,J1)
65 DO 142 J=J2,JMM1
66 X1I=X1JI(I,J)
67 X1JI(I,J)=X1IM1-X1I-X1I+X1JI(I,J+1)
68 X1IM1=X1I
69 142 CONTINUE
70
71 SUM1=0.
72 SUMJM=0.
73 DO 144 K=1,IMBY2
74 ccc SUM1 =SUM1 +X2(K)-X1(K)-X1(K)+X2(K)
75 SUM1 =SUM1 +XM1(K)-X1(K)-X1(K)+X2(K)
76 ccc SUMJM=SUMJM+X3(K)-X4(K)-X4(K)+X3(K)
77 SUMJM=SUMJM+X3(K)-X4(K)-X4(K)+XJMP1(K)
78 144 CONTINUE
79
80 X1SUM =SUM1 /IMBY2
81 XJMSUM =SUMJM/IMBY2
82 c DO 147 K=1,IM
83 c X1JI(K,JM)=XJMSUM
84 c 147 X1JI(K,J1)= X1SUM
85
86 145 CONTINUE
87
88 DO 160 I=1,IM
89 c DO 160 J=J1,JM
90 do 160 j=j2,jmm1
91 X1JI(I,J)=(X3JI(I,J)-X1JI(I,J)/XXX)
92 160 CONTINUE
93
94 #endif
95
96 RETURN
97 END

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