Jonathan, Regarding using area vs latitude or longitude, I was following the third paragraph of section 7.3.4:
… For longitude, the domain is indicated according to this provision by the string "longitude" (rather than the name of a longitude coordinate variable), and this implies that the method applies to all possible longitudes … Am I right in thinking that your suggestion of using area instead would depend on how we are calculating the longitude and latitude? Grace and peace, Jim Visit us on Facebook Jim Biard Research Scholar Cooperative Institute for Climate and Satellites NC North Carolina State University NOAA's National Climatic Data Center 151 Patton Ave, Asheville, NC 28801 e: [email protected] o: +1 828 271 4900 On Mar 5, 2014, at 4:00 AM, Jonathan Gregory <[email protected]> wrote: > Dear Jim > >> We are attempting to follow section 9. The centroid of the weather system >> is calculated at each time step, and we are planning to use the longitude >> and latitude calculated as the coordinates of the system. So, for example, >> would the variables below be OK? (I?ve left out time and numerous other >> variables.) >> >> float lat(trajectory, obs) >> :standard_name = ?latitude? >> :axis = ?Y? >> :cell_methods = ?latitude:mean (over system)? >> >> float lon(trajectory, obs) >> :standard_name = ?longitude? >> :axis = ?X? >> :cell_methods = ?longitude:mean (over system)? >> >> float maxlat(trajectory, obs) >> :cell_methods = ?latitude:maximum (over system)" >> >> float mtpwv(trajectory, obs) >> :long_name = ?mean total precipitable water vapor? >> :cell_methods = ?area:mean (over system)? > > I think the approach is OK but I would suggest for latitude and longitude > "area: mean (over system)" and for maxlat "area: maximum (over system)". These > indicate statistics of lat and lon which are calculated from the variation > over > the area of the system. Is that what you intend? The cell_methods is a blank- > separated list of words, so there's a space after ":". > > Cheers > > Jonathan > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
_______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
