Seth, thanks for this nice walkthrough! I still have one question, regarding 3):
for Jan 2013, I would chose 2013-01-01 00:00:00 as the start point, but what about the end point? - 2013-01-31 23:59:59 - 2013-01-31 00:00:00 - ... Is it possible to somehow set the time 'resolution' Cheers, Andreas. > 1) Set the time values to the midpoint of the time interval.* > > 2) Set a "cell_methods" attribute on the data variable with a > value of "time: mean (interval: 1 month)". > > 3) Create a time_bounds variable with dimensions (time,2) > whose values are the start and end points of each time interval. > > 4) Set a "bounds" attribute on the time coordinate variable > equal to the name of your time_bounds variable. > > *CF allows you to put the time coordinate anywhere in the > interval, but in my experience at the midpoint is the best option, > as it is the most intuitively obvious and least likely to cause > problems if you ever create aggregations over longer periods. > > Cheers, > > --Seth > > On Fri, 15 Mar 2013 22:45:39 +0100 > Andreas Hilboll <[email protected]> wrote: >> Hi, >> >> I want to store monthly averages of gridded satellite measurements of >> atmospheric trace gas columns. I'm wondering how I should specify the >> time axis, i.e. set the time for each monthly aggregate to the first, or >> the central, or the last day of the month. How should I specify that the >> values are actually monthly averages? >> >> Thanks for your ideas! >> Cheers, Andreas. >> _______________________________________________ >> 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
