| 1 |
adcroft |
1.3 |
C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_calc_tension.F,v 1.2 2004/05/24 18:44:27 adcroft Exp $ |
| 2 |
adcroft |
1.2 |
C $Name: $ |
| 3 |
adcroft |
1.1 |
|
| 4 |
|
|
#include "MOM_COMMON_OPTIONS.h" |
| 5 |
|
|
|
| 6 |
|
|
CBOP |
| 7 |
|
|
C !ROUTINE: MOM_CALC_TENSION |
| 8 |
|
|
|
| 9 |
|
|
C !INTERFACE: ========================================================== |
| 10 |
|
|
SUBROUTINE MOM_CALC_TENSION( |
| 11 |
|
|
I bi,bj,k, |
| 12 |
|
|
I uFld, vFld, |
| 13 |
|
|
O tension, |
| 14 |
|
|
I myThid) |
| 15 |
|
|
C !DESCRIPTION: |
| 16 |
|
|
C Calculates the tension of the horizontal flow field (at tracer points): |
| 17 |
|
|
C \begin{equation*} |
| 18 |
|
|
C D_T = \frac{\Delta y_f}{\Delta x_f} \delta_i \frac{u}{\Delta y_g} |
| 19 |
|
|
C - \frac{\Delta x_f}{\Delta y_f} \delta_j \frac{v}{\Delta x_g} |
| 20 |
|
|
C \end{equation*} |
| 21 |
|
|
|
| 22 |
|
|
C !USES: =============================================================== |
| 23 |
|
|
IMPLICIT NONE |
| 24 |
|
|
#include "SIZE.h" |
| 25 |
|
|
#include "EEPARAMS.h" |
| 26 |
|
|
#include "PARAMS.h" |
| 27 |
|
|
#include "GRID.h" |
| 28 |
|
|
|
| 29 |
|
|
C !INPUT PARAMETERS: =================================================== |
| 30 |
|
|
C bi,bj :: tile indices |
| 31 |
|
|
C k :: vertical level |
| 32 |
|
|
C uFld :: zonal flow |
| 33 |
|
|
C vFld :: meridional flow |
| 34 |
|
|
C myThid :: thread number |
| 35 |
|
|
INTEGER bi,bj,k |
| 36 |
|
|
_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 37 |
|
|
_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 38 |
|
|
INTEGER myThid |
| 39 |
|
|
|
| 40 |
|
|
C !OUTPUT PARAMETERS: ================================================== |
| 41 |
|
|
C tension :: tension of horizontal flow |
| 42 |
|
|
_RL tension(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 43 |
|
|
|
| 44 |
|
|
C !LOCAL VARIABLES: ==================================================== |
| 45 |
|
|
C i,j :: loop indices |
| 46 |
|
|
INTEGER i,j |
| 47 |
|
|
CEOP |
| 48 |
|
|
|
| 49 |
|
|
DO j=1-Oly,sNy+Oly-1 |
| 50 |
|
|
DO i=1-Olx,sNx+Olx-1 |
| 51 |
|
|
|
| 52 |
|
|
C Calculate tension of horizontal flow (ignoring lopping factors) |
| 53 |
|
|
C *NOTE* that masking is implicit in the contents of the (u,v) fields. |
| 54 |
|
|
tension(i,j)= |
| 55 |
adcroft |
1.3 |
& ( dyg(i+1, j ,bi,bj)*uFld(i+1, j ) |
| 56 |
|
|
& -dyg( i , j ,bi,bj)*uFld( i , j ) |
| 57 |
|
|
& -dxg( i ,j+1,bi,bj)*vFld( i ,j+1) |
| 58 |
|
|
& +dxg( i , j ,bi,bj)*vFld( i , j ) )*recip_rA(i,j,bi,bj) |
| 59 |
adcroft |
1.2 |
c & (dyf(i,j,bi,bj)*recip_dxf(i,j,bi,bj)) |
| 60 |
|
|
c & *( uFld(i+1, j )*recip_dyg(i+1, j ,bi,bj) |
| 61 |
|
|
c & -uFld( i , j )*recip_dyg( i , j ,bi,bj) ) |
| 62 |
|
|
c & -(dxf(i,j,bi,bj)*recip_dyf(i,j,bi,bj)) |
| 63 |
|
|
c & *( vFld( i ,j+1)*recip_dxg( i ,j+1,bi,bj) |
| 64 |
|
|
c & -vFld( i , j )*recip_dxg( i , j ,bi,bj) ) |
| 65 |
adcroft |
1.1 |
|
| 66 |
|
|
ENDDO |
| 67 |
|
|
ENDDO |
| 68 |
|
|
|
| 69 |
|
|
RETURN |
| 70 |
|
|
END |
Parent Directory
| 
Revision Log
| 
Revision Graph