[NARCCAP-discuss] Common Grid for NARCCAP?

[Darrin Sharp]

Just to close the loop on this … I discovered that the IDL function "griddata" does exactly what I needed.

-Darrin

======================================
Darrin Sharp
Faculty Research Assistant
Oregon Climate Change Research Inst. (OCCRI)
dsharp at coas.oregonstate.edu
970-219-6713

On Jul 18, 2013, at 9:40 AM, Ethan Bodnaruk <ebodnaruk at gmail.com> wrote:

> Hi Seth,
> 
> Thanks so much for your help.  I'm just starting to take a look at your
> code.  Originally I imagined a situation in which I have a location of
> interest surrounded by 4 actual domain coordinates or grids.  A program
> could take those 4 locations and interpolate to create data corresponding
> to the desired location.
> 
> It looks like your program requires one input file plus the gridfile,
> though.  So if I only want to regrid for one particular location (i.e. a
> certain city) does the gridfile I feed your program just need to contain
> the lat/lon of that one city?  Your code would then take the .nc file for
> all of North America and find the closest locations to my lat/lon and do
> the interpolation from there?  Is that how it would work?
> 
> Thanks so much!
> Ethan
> 
> On Wed, Jun 19, 2013 at 4:44 PM, Seth McGinnis <mcginnis at ucar.edu> wrote:
> 
>> Hi Ethan,
>> 
>> It regrids to whatever set of locations you've got in the gridfile.  It is
>> a
>> pretty slow program, and fewer output locations does go faster, so it's
>> good to
>> reduce it just to the specific locations you need if you can.
>> 
>> Cheers,
>> 
>> --Seth
>> 
>> 
>> 
>> On Wed, 19 Jun 2013 15:42:36 -0400
>> Ethan Bodnaruk <ebodnaruk at gmail.com> wrote:
>>> Hi Seth,
>>> 
>>> Does your code regrid for the entire North America region or can it regrid
>>> for just a specific location (which would be much faster I would think)?
>>> 
>>> Thanks!
>>> Ethan
>>> 
>>> On Tue, Jun 18, 2013 at 7:30 PM, Seth McGinnis <mcginnis at ucar.edu> wrote:
>>> 
>>>> Hi Darrin,
>>>> 
>>>> I have been using kriging functions from the R library "fields" to
>> regrid
>>>> the
>>>> data.  (Fancy interpolation methods like kriging preserve the spatial
>>>> variability better than averaging-based methods like
>>>> inverse-distance-weighting
>>>> in mountainous and coastal regions.)
>>>> 
>>>> You can find my code here:
>> http://www.narccap.ucar.edu/contrib/tools/R/
>>>> 
>>>> (I've regridded a bunch of time-average data for temp and precip, and
>> have
>>>> plans to publish it as part of the NARCCAP archive, but it's not quite
>>>> polished
>>>> enough to make it available to the general public just yet.)
>>>> 
>>>> Cheers,
>>>> 
>>>> --Seth
>>>> 
>>>> 
>>>> 
>>>> On Fri, 14 Jun 2013 11:42:56 -0600
>>>> Darrin Sharp <dsharp at coas.oregonstate.edu> wrote:
>>>>> What's the easiest way to put all the NARCCAP results on a common grid
>>>> (i.e.
>>>>> with the same lat/lon points for all the models)? Is there a tool
>>>> specifically
>>>>> for this? Has somebody already done it?
>>>>> 
>>>>> Trying to avoid writing this code myself - I know I'm not the first
>>>> person to
>>>>> need this.
>>>>> 
>>>>> -Darrin
>>>>> 
>>>>> ======================================
>>>>> Darrin Sharp
>>>>> Faculty Research Assistant
>>>>> Oregon Climate Change Research Inst. (OCCRI)
>>>>> dsharp at coas.oregonstate.edu
>>>>> 970-219-6713
>>>>> 
>>>>> _______________________________________________
>>>>> narccap-discuss mailing list
>>>>> narccap-discuss at mailman.ucar.edu
>>>>> http://mailman.ucar.edu/mailman/listinfo/narccap-discuss
>>>> 
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>>> 
>>> 
>>> 
>>> --
>>> Ethan Bodnaruk
>>> M.S. Nuclear Engineering
>>> Ph.D. Student, Ecological Engineering
>>> Author, *Beyond Religion: Science and Spirituality Aligned*
>>> www.ethanbodnaruk.com
>>> _______________________________________________
>>> narccap-discuss mailing list
>>> narccap-discuss at mailman.ucar.edu
>>> http://mailman.ucar.edu/mailman/listinfo/narccap-discuss
>> 
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> 
> 
> 
> -- 
> Ethan Bodnaruk
> M.S. Nuclear Engineering
> Ph.D. Student, Ecological Engineering
> Author, *Beyond Religion: Science and Spirituality Aligned*
> www.ethanbodnaruk.com
> _______________________________________________
> narccap-discuss mailing list
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> http://mailman.ucar.edu/mailman/listinfo/narccap-discuss