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[IDV #RWC-894290]: IDV v2.9u4: Computing surface temperature advection from NAM analysis

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  • Subject: [IDV #RWC-894290]: IDV v2.9u4: Computing surface temperature advection from NAM analysis
  • Date: Mon, 09 May 2011 11:25:54 -0600
> 
> On May 9, 2011, at 9:28 AM, Unidata IDV Support wrote:
> 
> > Hi Dave,
> >   The problem here is the difference in the height, the advection formula 
> > in the derived does not work in this case.
> > You can add a local formula to do this:
> >
> > def surfaceHorizontalAdvection(aFF, uFF, vFF):
> >    udtdx=GridMath.multiply(GridMath.ddx(aFF),uFF);
> >    vdtdy=GridMath.multiply(GridMath.ddy(aFF),vFF);
> >    advgrid=GridMath.add(udtdx,vdtdy);
> >    return advgrid.negate();
> >
> > I tested this in my machine and worked. I will probably make some changes 
> > in the source code, so you will not need to do this in the future.
> 
> Yuan,
> 
> I'll certainly appreciate having the code built into the advection 
> formula--thanks!
> 
> -- Dave
> 
> 

I checked in the changes, you can try the nightly tomorrow.


Yuan
> ************************************************************
> *   Dr. Dave Dempsey                        |       ^   ___       \|/     *
> *   Dept. of Geosciences                    |  ) ^     /||_||\    --0--  *
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> 
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: RWC-894290
Department: Support IDV
Priority: Normal
Status: Closed