1 |
C $Header: /u/gcmpack/MITgcm/verification/aim.5l_cs/code/shap_filt_uv_s2.F,v 1.1 2002/01/09 00:28:55 jmc Exp $ |
2 |
C $Name: checkpoint43a-release1mods $ |
3 |
|
4 |
#include "SHAP_FILT_OPTIONS.h" |
5 |
|
6 |
SUBROUTINE SHAP_FILT_UV_S2( |
7 |
U uFld, vFld, |
8 |
I myTime, myThid ) |
9 |
C /==========================================================\ |
10 |
C | S/R SHAP_FILT_UV_S2 | |
11 |
C | Applies Shapiro filter to U,V field over one XY slice | |
12 |
C | of one tile at a time. | |
13 |
C \==========================================================/ |
14 |
IMPLICIT NONE |
15 |
|
16 |
C == Global variables === |
17 |
#include "SIZE.h" |
18 |
#include "EEPARAMS.h" |
19 |
#include "PARAMS.h" |
20 |
#include "GRID.h" |
21 |
#include "SHAP_FILT.h" |
22 |
#include "SHAP_FILT_UV.h" |
23 |
|
24 |
C == Routine arguments |
25 |
_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
26 |
_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
27 |
_RL myTime |
28 |
INTEGER myThid |
29 |
|
30 |
#ifdef ALLOW_SHAP_FILT |
31 |
C------ |
32 |
C Combine computational Filter of Div & Vorticity |
33 |
C and Physical Filter of U,V field |
34 |
C nShapUVPhys = 0 ==> use only computational Filter |
35 |
C nShapUVPhys = 1 ==> compute Div & Vort. with Grid factors, |
36 |
C Filter Div & Vort. Numerically (power nShapUV-1) |
37 |
C and return filtered U.V in physical space |
38 |
C nShapUVPhys = nShapUV ==> Filter in Physical space only (power nShapUV) |
39 |
C------ |
40 |
|
41 |
C == Local variables == |
42 |
INTEGER bi,bj,K,I,J,N |
43 |
_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
44 |
_RS r_hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
45 |
_RL hDiv(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
46 |
_RL vort3(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
47 |
_RS maskZ |
48 |
|
49 |
IF (nShapUV.GT.0 .AND. Shap_uvtau.GT.0.) THEN |
50 |
|
51 |
DO bj=myByLo(myThid),myByHi(myThid) |
52 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
53 |
DO K=1,Nr |
54 |
DO J=1-Oly,sNy+Oly |
55 |
DO I=1-Olx,sNx+Olx |
56 |
tmpFldU(i,j,k,bi,bj)=uFld(i,j,k,bi,bj) |
57 |
& *_maskW(i,j,k,bi,bj) |
58 |
tmpFldV(i,j,k,bi,bj)=vFld(i,j,k,bi,bj) |
59 |
& *_maskS(i,j,k,bi,bj) |
60 |
ENDDO |
61 |
ENDDO |
62 |
ENDDO |
63 |
ENDDO |
64 |
ENDDO |
65 |
|
66 |
c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
67 |
|
68 |
C [d_xx+d_yy]^n tmpFld |
69 |
|
70 |
DO N=1,nShapUV |
71 |
|
72 |
CALL EXCH_UV_XYZ_RL(tmpFldU,tmpFldV,.TRUE.,myThid) |
73 |
|
74 |
DO bj=myByLo(myThid),myByHi(myThid) |
75 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
76 |
DO K=1,Nr |
77 |
|
78 |
C [d_xx+d_yy] tmpFld |
79 |
IF (N.LE.nShapUVPhys) THEN |
80 |
CALL MOM_CALC_HFACZ(bi,bj,k,hFacZ,r_hFacZ,myThid) |
81 |
CALL MOM_VI_CALC_HDIV(bi,bj,k, |
82 |
I tmpFldU(1-OLx,1-OLy,k,bi,bj), |
83 |
I tmpFldV(1-OLx,1-OLy,k,bi,bj), |
84 |
& hDiv,myThid) |
85 |
c CALL MOM_VI_CALC_RELVORT3(bi,bj,k, |
86 |
CALL SHAP_FILT_RELVORT3(bi,bj,k, |
87 |
I tmpFldU(1-OLx,1-OLy,k,bi,bj), |
88 |
I tmpFldV(1-OLx,1-OLy,k,bi,bj), |
89 |
& hFacZ,vort3,myThid) |
90 |
ELSE |
91 |
C- replace Physical calc Div & Vort by computational one : |
92 |
DO J=0,sNy+1 |
93 |
DO I=0,sNx+1 |
94 |
hDiv(i,j)=tmpFldU(i+1,j,k,bi,bj)-tmpFldU(i,j,k,bi,bj) |
95 |
& +tmpFldV(i,j+1,k,bi,bj)-tmpFldV(i,j,k,bi,bj) |
96 |
ENDDO |
97 |
ENDDO |
98 |
DO J=1,sNy+1 |
99 |
DO I=1,sNx+1 |
100 |
vort3(i,j)=(tmpFldV(i,j,k,bi,bj)-tmpFldV(i-1,j,k,bi,bj) |
101 |
& -tmpFldU(i,j,k,bi,bj)+tmpFldU(i,j-1,k,bi,bj) |
102 |
& ) |
103 |
maskZ = (maskW(i,j,k,bi,bj)+maskW(i,j-1,k,bi,bj)) |
104 |
& *(maskS(i,j,k,bi,bj)+maskS(i-1,j,k,bi,bj)) |
105 |
IF (maskZ.LT.1.) vort3(i,j)=0. |
106 |
ENDDO |
107 |
ENDDO |
108 |
|
109 |
C Special stuff for Cubed Sphere |
110 |
IF (useCubedSphereExchange) THEN |
111 |
c--- |
112 |
I=1 |
113 |
J=1 |
114 |
maskZ = maskW(i,j,k,bi,bj)+maskW(i,j-1,k,bi,bj) |
115 |
& +maskS(i,j,k,bi,bj) |
116 |
IF (maskZ.GE.2.) THEN |
117 |
vort3(I,J)= |
118 |
& tmpFldV(I,J,k,bi,bj) |
119 |
c & -tmpFldV(I-1,J,k,bi,bj) |
120 |
& -tmpFldU(I,J,k,bi,bj) |
121 |
& +tmpFldU(I,J-1,k,bi,bj) |
122 |
vort3(I,J)=vort3(I,J)*4.d0/3.d0 |
123 |
ELSE |
124 |
vort3(I,J)=0. |
125 |
ENDIF |
126 |
c--- |
127 |
I=sNx+1 |
128 |
J=1 |
129 |
maskZ = maskW(i,j,k,bi,bj)+maskW(i,j-1,k,bi,bj) |
130 |
& +maskS(i-1,j,k,bi,bj) |
131 |
IF (maskZ.GE.2.) THEN |
132 |
vort3(I,J)= |
133 |
c & tmpFldV(I,J,k,bi,bj) |
134 |
& -tmpFldV(I-1,J,k,bi,bj) |
135 |
& -tmpFldU(I,J,k,bi,bj) |
136 |
& +tmpFldU(I,J-1,k,bi,bj) |
137 |
vort3(I,J)=vort3(I,J)*4.d0/3.d0 |
138 |
ELSE |
139 |
vort3(I,J)=0. |
140 |
ENDIF |
141 |
c--- |
142 |
I=1 |
143 |
J=sNy+1 |
144 |
maskZ = maskW(i,j,k,bi,bj)+maskW(i,j-1,k,bi,bj) |
145 |
& +maskS(i,j,k,bi,bj) |
146 |
IF (maskZ.GE.2.) THEN |
147 |
vort3(I,J)= |
148 |
& tmpFldV(I,J,k,bi,bj) |
149 |
c & -tmpFldV(I-1,J,k,bi,bj) |
150 |
& -tmpFldU(I,J,k,bi,bj) |
151 |
& +tmpFldU(I,J-1,k,bi,bj) |
152 |
vort3(I,J)=vort3(I,J)*4.d0/3.d0 |
153 |
ELSE |
154 |
vort3(I,J)=0. |
155 |
ENDIF |
156 |
c--- |
157 |
I=sNx+1 |
158 |
J=sNy+1 |
159 |
maskZ = maskW(i,j,k,bi,bj)+maskW(i,j-1,k,bi,bj) |
160 |
& +maskS(i-1,j,k,bi,bj) |
161 |
IF (maskZ.GE.2.) THEN |
162 |
vort3(I,J)= |
163 |
c & tmpFldV(I,J,k,bi,bj) |
164 |
& -tmpFldV(I-1,J,k,bi,bj) |
165 |
& -tmpFldU(I,J,k,bi,bj) |
166 |
& +tmpFldU(I,J-1,k,bi,bj) |
167 |
vort3(I,J)=vort3(I,J)*4.d0/3.d0 |
168 |
ELSE |
169 |
vort3(I,J)=0. |
170 |
ENDIF |
171 |
c--- |
172 |
ENDIF |
173 |
ENDIF |
174 |
|
175 |
c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
176 |
|
177 |
IF (N.GT.nShapUV-nShapUVPhys) THEN |
178 |
CALL MOM_CALC_HFACZ(bi,bj,k,hFacZ,r_hFacZ,myThid) |
179 |
CALL MOM_VI_DEL2UV( |
180 |
I bi,bj,k,hDiv,vort3,hFacZ, |
181 |
O tmpFldU(1-OLx,1-OLy,k,bi,bj), |
182 |
O tmpFldV(1-OLx,1-OLy,k,bi,bj), |
183 |
I myThid) |
184 |
IF (Shap_uvLength.EQ.0.) THEN |
185 |
DO J=1,sNy+1 |
186 |
DO I=1,sNx+1 |
187 |
tmpFldU(i,j,k,bi,bj) = -0.125*tmpFldU(i,j,k,bi,bj) |
188 |
& *rAw(i,j,bi,bj)*_maskW(i,j,k,bi,bj) |
189 |
tmpFldV(i,j,k,bi,bj) = -0.125*tmpFldV(i,j,k,bi,bj) |
190 |
& *rAs(i,j,bi,bj)*_maskS(i,j,k,bi,bj) |
191 |
ENDDO |
192 |
ENDDO |
193 |
ELSE |
194 |
DO J=1,sNy+1 |
195 |
DO I=1,sNx+1 |
196 |
tmpFldU(i,j,k,bi,bj) = -0.125*tmpFldU(i,j,k,bi,bj) |
197 |
& *Shap_uvLength*Shap_uvLength*_maskW(i,j,k,bi,bj) |
198 |
tmpFldV(i,j,k,bi,bj) = -0.125*tmpFldV(i,j,k,bi,bj) |
199 |
& *Shap_uvLength*Shap_uvLength*_maskS(i,j,k,bi,bj) |
200 |
ENDDO |
201 |
ENDDO |
202 |
ENDIF |
203 |
ELSE |
204 |
DO J=1,sNy |
205 |
DO I=1,sNx+1 |
206 |
tmpFldU(i,j,k,bi,bj) = -0.125* |
207 |
& ( hDiv(i,j)-hDiv(i-1,j) |
208 |
& -vort3(i,j+1)+vort3(i,j) |
209 |
& )*maskW(i,j,k,bi,bj) |
210 |
ENDDO |
211 |
ENDDO |
212 |
DO J=1,sNy+1 |
213 |
DO I=1,sNx |
214 |
tmpFldV(i,j,k,bi,bj) = -0.125* |
215 |
& ( vort3(i+1,j)-vort3(i,j) |
216 |
& +hDiv(i,j)-hDiv(i,j-1) |
217 |
& )*maskS(i,j,k,bi,bj) |
218 |
ENDDO |
219 |
ENDDO |
220 |
|
221 |
ENDIF |
222 |
|
223 |
ENDDO |
224 |
ENDDO |
225 |
ENDDO |
226 |
C end loop N=1,nShapUV |
227 |
ENDDO |
228 |
|
229 |
c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
230 |
|
231 |
C F <- [1 - (d_xx+d_yy)^n *deltat/tau].F |
232 |
DO bj=myByLo(myThid),myByHi(myThid) |
233 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
234 |
DO K=1,Nr |
235 |
DO J=1,sNy+1 |
236 |
DO I=1,sNx |
237 |
uFld(i,j,k,bi,bj)=uFld(i,j,k,bi,bj) |
238 |
& -tmpFldU(i,j,k,bi,bj)*deltaTmom/Shap_uvtau |
239 |
ENDDO |
240 |
ENDDO |
241 |
DO J=1,sNy+1 |
242 |
DO I=1,sNx |
243 |
vFld(i,j,k,bi,bj)=vFld(i,j,k,bi,bj) |
244 |
& -tmpFldV(i,j,k,bi,bj)*deltaTmom/Shap_uvtau |
245 |
ENDDO |
246 |
ENDDO |
247 |
ENDDO |
248 |
ENDDO |
249 |
ENDDO |
250 |
|
251 |
CALL EXCH_UV_XYZ_RL(uFld,vFld,.TRUE.,myThid) |
252 |
|
253 |
ENDIF |
254 |
#endif /* ALLOW_SHAP_FILT */ |
255 |
|
256 |
RETURN |
257 |
END |