On Thu, Nov 21, 2013 at 1:03 PM, Jim Biard <jbiard at cicsnc.org> wrote:
> The data is a global grid that has a value for every cell. The values
> were obtained by fitting a function to a set of irregularly spaced points
> and then sampling the function at the center of each cell.
>
>
got it -- sorry for the confusion, that is pretty much what you said the
first time...
But: at a theoretical level you have a continuous field -- it was sampled
at irregular discrete points. You then constructed a regular grid of points
by fitting the sample points. So the values you have for each cell is an
estimate of the value at the point it was computed. Do its lat-lon is that
point, i.e. the lat-lon of the center of the cell.
If that's essentially a point value, then you're done. If that's say, a
average of the cell, then you would want cell_method: mean
But the original points are irrelevant to the this. Of course, you probably
want to express that these are results from an interpolation, but I don't
know that there's a way to do that in CF -- but it's not cell_methods.
-Chris
> Jim
>
> [image: CICS-NC] <http://www.cicsnc.org/>Visit us on
> Facebook <http://www.facebook.com/cicsnc>*Jim Biard*
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>
>
> On Nov 21, 2013, at 3:59 PM, Chris Barker <Chris.Barker at noaa.gov> wrote:
>
> On Thu, Nov 21, 2013 at 9:05 AM, Jim Biard <jbiard at cicsnc.org> wrote:
>
>> I have a variable that contains a time average of gridded temperature
>> measurements. The grid is produced by a fit of irregularly-spaced point
>> data (weather stations), and any given cell might not contain an actual
>> measurement point. I understand that I should have a cell_method of ?time:
>> mean? for the time axis, but what should I do for the lat/lon dimensions?
>>
>
> Maybe I misunderstand your data, but I think that for this purpose, the
> "cell" is only in the time dimension -- it is still point data in the
> lat/lon dimensions. So each value of a given variable is still associated
> with a single lat and long. So you do the same thing as usual for that.
>
> HTH,
> -Chris
>
>
>
>
>
>
>
>
>
>>
>> Grace and peace,
>>
>> Jim
>>
>> [image: CICS-NC] <http://www.cicsnc.org/>Visit us on
>> Facebook <http://www.facebook.com/cicsnc>*Jim Biard*
>> *Research Scholar*
>> Cooperative Institute for Climate and Satellites NC <http://cicsnc.org/>
>> North Carolina State University <http://ncsu.edu/>
>> NOAA's National Climatic Data Center <http://ncdc.noaa.gov/>
>> 151 Patton Ave, Asheville, NC 28801
>> e: jbiard at cicsnc.org
>> o: +1 828 271 4900
>>
>>
>>
>>
>>
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>
>
> --
>
> Christopher Barker, Ph.D.
> Oceanographer
>
> Emergency Response Division
> NOAA/NOS/OR&R (206) 526-6959 voice
> 7600 Sand Point Way NE (206) 526-6329 fax
> Seattle, WA 98115 (206) 526-6317 main reception
>
> Chris.Barker at noaa.gov
>
>
>
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker at noaa.gov
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