On Fri, Mar 22, 2013 at 11:05 AM, Jonathan Gregory
<j.m.gregory at reading.ac.uk> wrote:
> The cell_methods would indicate standard deviation. This allows you to say
> whether you mean standard deviation over time, latitude, longitude or whatever
> dimension, so it's more precise - which one do you mean, in fact?
I think you need a definition of the cell boundaries also:
http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#cell-boundaries
>> float t_an(time, depth, lat, lon) ;
>> t_an:standard_name = "sea_water_temperature" ;
>> t_an:long_name = "Objectively Analyzed Mean" ;
>> t_an:comment = "Objectively analyzed climatologies are the objectively interpolated mean fields for an oceanographic variable at standard depth levels for the World Ocean." ;
>> t_an:cell_methods = "area:mean depth:mean time:mean" ;
>> t_an:grid_mapping = "crs" ;
>> t_an:units = "degrees_celsius" ;
>> t_an:FillValue = 9.96921e+36f ;
from this, I can tell that the value is a mean over area, depth and
time -- but what area? what depths? what time?
I'd probably assume the area of a single grid box (though that's not
totaly defined here, and probaly the full water depth, but I'm not at
all sure about time: mean over one time step?> monthly mean? yearly?
this brings u sa question for me: how would one define a cell bounds
that was "the full water depth".
-Chris
--
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
Received on Fri Mar 22 2013 - 13:38:47 GMT
