ailer: CommuniGate Pro WebUser v6.0.1
> Date: Mon, 18 Mar 2013 15:21:44 -0600
> Subject: Re: [CF-metadata] how to specify time dimension for monthly averages
>
> Um, I don't think that's true, actually. That's probably a sensible
> convention
> to follow in many cas
Um, I don't think that's true, actually. That's probably a sensible convention
to follow in many cases, but I don't believe it's a CF requirement. (Or at
least, I never noticed it. If it is in there, we need to edit the spec to make
it more prominent!)
Cheers,
--Seth
On Mon, 18 Mar 2013 08:2
office.gov.uk
>
>
>-Original Message-
>From: CF-metadata [mailto:cf-metadata-boun...@cgd.ucar.edu] On Behalf Of Seth
>McGinnis
>Sent: 15 March 2013 22:01
>To: Andreas Hilboll; CF-metadata@cgd.ucar.edu
>Subject: Re: [CF-metadata] how to specify time dimension for
Andreas,
The other thing to keep in mind regarding the time bounds (and other bounds
variables, such as for X and Y or longitude and latitude) is that the upper
bound is exclusive. The upper bound value is greater than the values in the
interval.
Grace and peace,
Jim
Jim Biard
Research Scho
> I'm not sure if you noticed my post to the CF mailing list last week about
> the tropospheric/stratospheric trace gas standard names you proposed back in
> December: http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2013/056207.html.
> There is just one question remaining to be resolved about
ucar.edu
Subject: Re: [CF-metadata] how to specify time dimension for monthly averages
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
Thanks again, Seth, now it's clear.
Cheers, Andreas.
> If your intervals are contiguous, time_bounds[i,1] should equal
> time_bounds[i+1,0] (See the beginning of section 7.1 in the CF spec.) So for
> January 2013, you should set the endpoint to 2013-02-01 00:00:00.
>
> (The resulting potential
If your intervals are contiguous, time_bounds[i,1] should equal
time_bounds[i+1,0] (See the beginning of section 7.1 in the CF spec.) So for
January 2013, you should set the endpoint to 2013-02-01 00:00:00.
(The resulting potential for confusion is why I think it's best practice to put
the time
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, Andrea
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) S
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 a
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