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[CF-metadata] udunits handling of fuzzy time units

From: Benno Blumenthal <benno>
Date: Wed, 16 Mar 2011 12:44:56 -0400

While wikipedia does use the word "accuracy", it is clear in the context
that it does not really mean it, and that "resolution" is more appropriate.

Benno

On Wed, Mar 16, 2011 at 11:52 AM, Nan Galbraith <ngalbraith at whoi.edu> wrote:

>
> On 3/16/11 10:21 AM, Hedley, Mark wrote:
>
>> I think one the important factors, implied if not stated is what is
>> meant by accuracy.
>>
> Sorry, it should really be "resolution"; we also use accuracy with our
> time variable (for real-time data) to describe clock drift.
>
> In our previous discussion on this, we did use the term accuracy:
> mailman.cgd.ucar.edu/pipermail/cf-metadata/2010/thread.html,
> 'New standard names for satellite obs data (time as ISO strings)'
> Jon quoted the wikipedia description of ISO 8601:
>
> /> From Wikipedia (http://en.wikipedia.org/wiki/ISO_8601):
> />/
> />/ "For reduced accuracy, any number of values may be dropped from any of
> />/ the date and time representations, but in the order from the least to
> />/ the most significant. For example, "2004-05" is a valid ISO 8601 date,
> />/ which indicates May (the fifth month) 2004.//
> /
> Udunits should really treat the reference date this way.
>
> Nan
> //
>
>
>
>> --
Dr. M. Benno Blumenthal benno at iri.columbia.edu
International Research Institute for climate and society
The Earth Institute at Columbia University
Lamont Campus, Palisades NY 10964-8000 (845) 680-4450
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