Dear Jonathan:
(1)
Note that there are no quantities in the standard name table with units of degrees celsius..
(2)
Also note that I took a look at udunits 2 and degC is not in the XML...
- < unit > < def > K _at_ 273.15</ def > - < name > < singular > degree_Celsius</ singular > < plural > degrees_Celsius</ plural > </ name > < symbol > ?C</ symbol > - <!--
DEGREE SIGN --> </ unit >
Am I missing something regarding how to interpret and use udunits2?
very respectfully,
randy
----------------------------------------
From: "Jonathan Gregory" <j.m.gregory at reading.ac.uk>
Sent: Monday, June 10, 2013 5:27 PM
To: cf-metadata at cgd.ucar.edu
Subject: Re: [CF-metadata] new standard name: atmosphere_stability_k_index
Dear Jonathan
K and degC have the same dimensions and either is acceptable, I would say.
Cheers
Jonathan
----- Forwarded message from Jonathan Wrotny <jwrotny at aer.com> -----
> Date: Mon, 10 Jun 2013 13:47:45 -0400
> From: Jonathan Wrotny <jwrotny at aer.com>
> To: Jonathan Gregory <j.m.gregory at reading.ac.uk>
> CC: cf-metadata at cgd.ucar.edu
> Subject: Re: [CF-metadata] new standard name: atmosphere_stability_k_index
> User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130509
> Thunderbird/17.0.6
>
> Dear Jonathan Gregory,
>
> I would like to make one correction to the
> "atmosphere_stability_k_index" proposal. The GOES-R product that is
> motivating this submission will have units of degrees Celsius, but
> in order to have consistency with some of the other atmosphere
> stability indices, the canonical units should be Kelvins. So, the
> updated proposal is then:
>
> Standard Name:atmosphere_stability_k_index
>
> Definition:The atmosphere_stability_k_index is an index that
> indicates the potential of severe convection and is often referred
> to a simply the k index. The index is derived from the difference in
> air temperature between 850 and 500 hPa, the dew point temperature
> at 850 hPa, and the difference between the air temperature and the
> dew point temperature at 700 hPa.
>
> Canonical Units:K
>
>
> Sincerely,
>
> Jonathan Wrotny
>
> On 6/4/2013 5:33 AM, Jonathan Gregory wrote:
> >Dear Jonathan
> >
> >This appears to be a very ad-hoc quantity, and I agree it would not make sense
> >to try to devise a general physical name for it. Adding atmosphere_stability,
> >as with the total totals index, provides useful information on what sort of
> >quantity is it, taking a step towards making it self-explanatory.
> >
> >Thanks
> >
> >Jonathan
> >
> >
> >----- Forwarded message from Jonathan Wrotny <jwrotny at aer.com> -----
> >
> >>Date: Wed, 29 May 2013 15:42:05 -0400
> >>From: Jonathan Wrotny <jwrotny at aer.com>
> >>User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130509
> >> Thunderbird/17.0.6
> >>To: cf-metadata at cgd.ucar.edu
> >>Subject: [CF-metadata] new standard name: atmosphere_stability_k_index
> >>
> >>Dear CF board:
> >>
> >>I would like to propose the following standard name:
> >>
> >>atmosphere_stability_k_index
> >>
> >>with the associate definition:
> >>
> >>The atmosphere_stability_k_index is an index that indicates the
> >>potential of severe convection and is often referred to a simply the
> >>k index. The index is derived from the difference in air temperature
> >>between 850 and 500 hPa, the dew point temperature at 850 hPa, and
> >>the difference between the air temperature and the dew point
> >>temperature at 700 hPa.
> >>
> >>and the canonical units of:
> >>
> >>C
> >>
> >>NOTE: This proposed product using fixed pressure levels of 850,
> >>700, and 500 hPa for calculating the index which are unique to this
> >>product, thus these values are included in the definition.
> >>
> >>Sincerely,
> >>
> >>Jonathan
> >>_______________________________________________
> >>CF-metadata mailing list
> >>CF-metadata at cgd.ucar.edu
> >>http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
> >
> >----- End forwarded message -----
> >_______________________________________________
> >CF-metadata mailing list
> >CF-metadata at cgd.ucar.edu
> >http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
>
----- End forwarded message -----
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