Re: Need suggestions on regridding

From: Mary Haley <haley_at_nyahnyahspammersnyahnyah>
Date: Fri Nov 02 2012 - 09:43:09 MDT

Hi Xin,

I'm CC ESMF support on this message, as they are experts in this department.

--Mary

On Oct 31, 2012, at 1:47 PM, Xin Xi wrote:

> Hi there,
>
> I have followed recent discussions on regriding, and I happen to be dealing with this issue recently. I need to compare two soil moisture (unit: m^3/m^3) fields, one is on a coarse rectilinear grid (1x1 degree) and the other is on a curvilinear (from WRF model) grid at 40 km resolution. I could regrid from 1x1 grid to wrf domain, or from wrf domain to 1x1 grid. Which way and which regrid method can better suit my needs here?
> To avoid interpolation errors, I guess it is better to go from fine to coarse resolutions. If so, I can do the interpolation myself by looping over the coarse grid, and assigning the average value (or weighted average, and other methods) of all fine pixels that fall within each coarse cell. What are the differences of doing this compared to the NCL regrid methods? Can someone explain this to me?
>
> Thanks a lot !
> Xin
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Received on Fri Nov 2 09:43:19 2012

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