| 1 |
cnh |
1.3 |
C $Header: /u/gcmpack/models/MITgcmUV/pkg/shap_filt/shap_filt_v.F,v 1.2 2001/02/02 21:36:30 adcroft Exp $ |
| 2 |
|
|
C $Name: $ |
| 3 |
adcroft |
1.2 |
|
| 4 |
|
|
#include "SHAP_FILT_OPTIONS.h" |
| 5 |
|
|
|
| 6 |
|
|
SUBROUTINE SHAP_FILT_V( vVel,bi,bj,K,myCurrentTime,myThid ) |
| 7 |
|
|
C /==========================================================\ |
| 8 |
|
|
C | S/R SHAP_FILT_V | |
| 9 |
|
|
C | Applies Shapiro filter to V field over one XY slice | |
| 10 |
|
|
C | of one tile at a time. | |
| 11 |
|
|
C \==========================================================/ |
| 12 |
|
|
IMPLICIT NONE |
| 13 |
|
|
|
| 14 |
|
|
C == Global variables === |
| 15 |
|
|
#include "SIZE.h" |
| 16 |
|
|
#include "EEPARAMS.h" |
| 17 |
|
|
#include "PARAMS.h" |
| 18 |
|
|
#include "GRID.h" |
| 19 |
|
|
|
| 20 |
|
|
C == Routine arguments |
| 21 |
|
|
_RL vVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
| 22 |
|
|
INTEGER myThid |
| 23 |
|
|
_RL myCurrentTime |
| 24 |
|
|
INTEGER bi, bj, K |
| 25 |
|
|
|
| 26 |
|
|
#ifdef ALLOW_SHAP_FILT |
| 27 |
|
|
|
| 28 |
|
|
C == Local variables == |
| 29 |
|
|
_RL tmpFldX(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) |
| 30 |
|
|
_RL tmpFldY(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) |
| 31 |
|
|
_RS maskZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 32 |
|
|
INTEGER I,J,N,N1,N2 |
| 33 |
|
|
|
| 34 |
|
|
C Create temporary Zeta mask (accounting for thin walls) |
| 35 |
|
|
DO J=1-OLy+1,sNy+OLy |
| 36 |
|
|
DO I=1-OLx,sNx+OLx |
| 37 |
|
|
maskZ(i,j) = _maskW(i,j-1,k,bi,bj) |
| 38 |
|
|
& *_maskW(i, j ,k,bi,bj) |
| 39 |
|
|
ENDDO |
| 40 |
|
|
ENDDO |
| 41 |
|
|
|
| 42 |
|
|
DO J=1-OLy,sNy+OLy |
| 43 |
|
|
DO I=1-OLx,sNx+OLx |
| 44 |
|
|
tmpFldX(i,j,1) = vVel(i,j,k,bi,bj) |
| 45 |
|
|
& *_maskS(i,j,k,bi,bj) |
| 46 |
|
|
ENDDO |
| 47 |
|
|
ENDDO |
| 48 |
|
|
|
| 49 |
|
|
C Extract small-scale noise from tmpFldX (delta_ii^n) |
| 50 |
|
|
DO N=1,nShap |
| 51 |
|
|
N1=1+mod(N+1,2) |
| 52 |
|
|
N2=1+mod( N ,2) |
| 53 |
|
|
DO J=1-OLy+1,sNy+OLy |
| 54 |
|
|
DO I=1-OLx+1,sNx+OLx-1 |
| 55 |
|
|
tmpFldX(i,j,N2) = -0.25*( |
| 56 |
|
|
& (tmpFldX(i+1,j,N1)-tmpFldX( i ,j,N1))*maskZ(i+1,j) |
| 57 |
|
|
& -(tmpFldX( i ,j,N1)-tmpFldX(i-1,j,N1))*maskZ( i ,j) |
| 58 |
|
|
#ifdef NO_SLIP_SHAP |
| 59 |
|
|
& -2.*(2.-maskZ(i,j)-maskZ(i+1,j))*tmpFldX(i,j,N1) |
| 60 |
|
|
#endif |
| 61 |
|
|
& )*_maskS(i,j,k,bi,bj) |
| 62 |
|
|
ENDDO |
| 63 |
|
|
ENDDO |
| 64 |
|
|
ENDDO |
| 65 |
|
|
|
| 66 |
|
|
#ifdef SEQUENTIAL_2D_SHAP |
| 67 |
|
|
DO J=1-OLy,sNy+OLy |
| 68 |
|
|
DO I=1-OLx,sNx+OLx |
| 69 |
|
|
tmpFldX(i,j,N2) = vVel(i,j,k,bi,bj) - tmpFldX(i,j,N2) |
| 70 |
|
|
tmpFldY(i,j,1) = tmpFldX(i,j,N2) |
| 71 |
|
|
ENDDO |
| 72 |
|
|
ENDDO |
| 73 |
|
|
#else |
| 74 |
|
|
DO J=1-OLy,sNy+OLy |
| 75 |
|
|
DO I=1-OLx,sNx+OLx |
| 76 |
|
|
tmpFldY(i,j,1) = vVel(i,j,k,bi,bj) |
| 77 |
|
|
& *_maskS(i,j,k,bi,bj) |
| 78 |
|
|
ENDDO |
| 79 |
|
|
ENDDO |
| 80 |
|
|
#endif /* SEQUENTIAL_2D_SHAP */ |
| 81 |
|
|
|
| 82 |
|
|
C Extract small-scale noise from tmpFldY (delta_jj^n) |
| 83 |
|
|
DO N=1,nShap |
| 84 |
|
|
N1=1+mod(N+1,2) |
| 85 |
|
|
N2=1+mod( N ,2) |
| 86 |
|
|
DO J=1-OLy+1,sNy+OLy-1 |
| 87 |
|
|
DO I=1-OLx,sNx+OLx |
| 88 |
|
|
tmpFldY(i,j,N2) = -0.25*( |
| 89 |
|
|
& tmpFldY(i,j-1,N1) + tmpFldY(i,j+1,N1) |
| 90 |
|
|
& - 2.*tmpFldY(i,j,N1) |
| 91 |
|
|
& )*_maskS(i,j,k,bi,bj) |
| 92 |
|
|
ENDDO |
| 93 |
|
|
ENDDO |
| 94 |
|
|
ENDDO |
| 95 |
|
|
|
| 96 |
|
|
C Subtract small-scale noise from field |
| 97 |
|
|
#ifdef SEQUENTIAL_2D_SHAP |
| 98 |
|
|
DO J=1-OLy,sNy+OLy |
| 99 |
|
|
DO I=1-OLx,sNx+OLx |
| 100 |
|
|
vVel(i,j,k,bi,bj) = tmpFldX(i,j,N2) - tmpFldY(i,j,N2) |
| 101 |
|
|
ENDDO |
| 102 |
|
|
ENDDO |
| 103 |
|
|
#else |
| 104 |
|
|
DO J=1-OLy,sNy+OLy |
| 105 |
|
|
DO I=1-OLx,sNx+OLx |
| 106 |
|
|
vVel(i,j,k,bi,bj) = vVel(i,j,k,bi,bj) |
| 107 |
|
|
& -0.5*( tmpFldX(i,j,N2)+tmpFldY(i,j,N2) ) |
| 108 |
|
|
ENDDO |
| 109 |
|
|
ENDDO |
| 110 |
|
|
#endif /* SEQUENTIAL_2D_SHAP */ |
| 111 |
|
|
|
| 112 |
|
|
#endif /* ALLOW_SHAP_FILT */ |
| 113 |
|
|
|
| 114 |
|
|
RETURN |
| 115 |
|
|
END |
Parent Directory
| 
Revision Log
| 
Revision Graph