C $Header: /u/gcmpack/MITgcm/pkg/cheapaml/gad_c2_2d_adv_x.F,v 1.3 2011/02/24 16:11:41 wienders Exp $ C $Name: $ #include "GAD_OPTIONS.h" CBOP C !ROUTINE: GAD_C2_2d_ADV_X C !INTERFACE: ========================================================== SUBROUTINE GAD_C2_2D_ADV_X( I bi,bj, I uVel, I tracer, O uT, I myThid ) C !DESCRIPTION: C Calculates the area integrated zonal flux due to advection of a tracer using C centered second-order interpolation: C \begin{equation*} C F^x_{adv} = U \overline{\theta}^i C \end{equation*} C !USES: =============================================================== IMPLICIT NONE #include "SIZE.h" #include "GRID.h" C !INPUT PARAMETERS: =================================================== C bi,bj :: tile indices C uvel :: zonal velocity C tracer :: tracer field C myThid :: thread number INTEGER bi,bj _RL uvel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy) INTEGER myThid C !OUTPUT PARAMETERS: ================================================== C uT :: zonal advective flux _RL uT (1-OLx:sNx+OLx,1-OLy:sNy+OLy) C !LOCAL VARIABLES: ==================================================== C i,j :: loop indices INTEGER i,j CEOP DO j=1-Oly,sNy+Oly uT(1-Olx,j)=0. DO i=1-Olx+1,sNx+Olx uT(i,j) = & uVel(i,j,bi,bj)*(Tracer(i,j)+Tracer(i-1,j))*0.5 _d 0 ENDDO ENDDO RETURN END