Re: Interpolating between two curvilinear grids.

Dear Dennis,

Thank you very much for pointing me to this new development. I think its a
very useful and well-written function. I just want to reconfirm that the
weights file only depends on the properties of the two grids (dimensions,
lat/lon and projection) and not on the data/variable to be plotted? Since I
am using pre-defined NCEP grids to regrid daily meteorological data, it
would save me a lot of time if I use the same weights file for regridding
say, daily precipitation from multiple source files.

Thanks,
Nisha

On Tue, Sep 25, 2012 at 3:27 PM, Dennis Shea <shea@ucar.edu> wrote:

> There has been a lot of ncl-talk traffic about the ESMF regrid
> functionality that is in 6.1.0-beta. See
>
> See: http://www.ncl.ucar.edu/**Applications/<http://www.ncl.ucar.edu/Applications/>
>
> Under 'Data Analysis', click 'ESMF Regridding'
>
> There are numerous examples of regridding one curvilinear
> grid to another.
>
> The basic steps of NCL/ESMF regridding involve:
>
> Reading or generating the "source" grid.
> Reading or generating the "destination" grid.
> Creating special NetCDF files that describe these two grids.
> *Generating a NetCDF file that contains the weights.
> Applying the weights to data on the source grid,
> to interpolate the data to the destination grid.
> Copying over any metadata to the newly regridded data.
>
> *This is the most important step. Once you have a weights file, you can
> skip steps #1-4 if you are interpolating data on the same grids.
>
>
>
>
> On 09/25/2012 01:09 PM, Manisha Ganeshan wrote:
>
>> Hi,
>>
>> I have data on a polar stereographic projection, and I wish to remap it
>> with maximum accuracy onto a lambert conformal projection. Both grids
>> are roughly of the same resolution (5km and 4.7km). Can someone suggest
>> the best way to do this without introducing too many spatial errors?
>>
>> Thanks,
>> Nisha
>>
>>
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>

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Received on Wed Sep 26 09:42:35 2012