[ncl-talk] Retrieving number of observations used in regridding

[Mary Haley]

Hi Archana,

That's a good question.  I assume you are talking about ESMF regridding
here, since you mentioned weights files.

I'm not sure of the answer, so I'll CC the ESMF support folks here to see
if they know.

--Mary

On Mon, Mar 2, 2015 at 12:29 PM, Archana Dayalu <adayalu at seas.harvard.edu>
wrote:

> Hi,
> I am using NCL to regrid various datasets (MODIS Sinusoidal grid source,
> 500m, to a rectangular grid destination, coarser resolution, e.g., 3km),
> and was wondering if there is a way to retrieve the number of non-missing
> observations used in the regridding. For instance: if a gridcell in my
> final regridded dataset involved a bilinear interpolation of n gridcells in
> the grid source file, only m of which contained non-missing observations,
> is there a way to retrieve the m quantity? Is this saved in any of the
> regridding weights files? (I'm trying to retrieve that quantity so that the
> uncertainty bounds of the values in my final regridded product could be
> linked to the number of actual observations used in the calculation of each
> regridded value).
> Thanks very much for any help.
> Regards
> Archana
>
> --
> ____________________________________________________
> *Archana Dayalu*
> Graduate Student
> Dept. of Earth and Planetary Sciences
> Harvard University
> 24 Oxford Street #402
> Cambridge, MA 02138
> (617) 384-8206
>
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