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 <lists at hilboll.de> 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.
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>
Received on Fri Mar 15 2013 - 16:12:27 GMT
