C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/gad_c2_adv_r.F,v 1.5 2014/08/18 12:22:46 jmc Exp $
C $Name: $
#include "GAD_OPTIONS.h"
CBOP
C !ROUTINE: GAD_C2_ADV_R
C !INTERFACE: ==========================================================
SUBROUTINE GAD_C2_ADV_R(
I bi, bj, k,
I rTrans,
I tracer,
O wT,
I myThid )
C !DESCRIPTION:
C Calculates the area integrated vertical flux due to advection of a tracer
C using centered second-order interpolation:
C \begin{equation*}
C F^r_{adv} = W \overline{\theta}^k
C \end{equation*}
C !USES: ===============================================================
IMPLICIT NONE
#include "SIZE.h"
#include "GRID.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
C !INPUT PARAMETERS: ===================================================
C bi,bj :: tile indices
C k :: vertical level
C rTrans :: vertical volume transport
C tracer :: tracer field
C myThid :: thread number
INTEGER bi,bj,k
_RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
INTEGER myThid
C !OUTPUT PARAMETERS: ==================================================
C wT :: vertical advective flux
_RL wT (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
C !LOCAL VARIABLES: ====================================================
C i,j :: loop indices
C km1 :: =k+1 for k=Nr
INTEGER i,j,km1
CEOP
km1=max(1,k-1)
IF ( k.EQ.1 .OR. k.GT.Nr) THEN
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
wT(i,j) = 0.
ENDDO
ENDDO
ELSE
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
wT(i,j) = maskC(i,j,km1,bi,bj)*
& rTrans(i,j)*
& (tracer(i,j,k)+tracer(i,j,km1))*0.5 _d 0
ENDDO
ENDDO
ENDIF
RETURN
END