Dear David,
Thanks for the update. The Dobson Unit is also commonly defined as (from
Wikipedia):
"One Dobson unit refers to a layer of gas that would be 10 µm thick
under standard temperature and pressure
<http://en.wikipedia.org/wiki/Standard_temperature_and_pressure>^[1]
<http://en.wikipedia.org/wiki/Dobson_unit#cite_note-0> , sometimes
referred to as a 'milli-atmo-centimeter.' For example, 300 DU of ozone
brought down to the surface of the Earth at 0 °C
<http://en.wikipedia.org/wiki/Degree_Celsius> would occupy a layer only
3 mm thick"
That would match better the variable name. So the unit description
should maybe be adapted...
Best regards,
Christophe
On 19/09/2012 16:30, David Hassell wrote:
Dear Christophe,
Thinking ahead, I tried to put dobson into cf-python's CF Udunits data
base, but couldn't since it was already there (at Udunits version
2.1.24):
<unit>
<def>446.2 micromoles/meter^2</def>
<aliases>
<name> <singular>dobson</singular> </name>
<symbol>DU</symbol>
</aliases>
</unit>
Would it be too unexpected to give units of "mole/area" to a standard
name which started "equivalent_thickness_"?
All the best,
David
---- Original message from Christophe Lerot (09AM 19 Sep 12)
Date: Wed, 19 Sep 2012 09:03:35 +0200
From: Christophe Lerot <[email protected]>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20120614
Thunderbird/13.0.1
To: "Cameron-smith, Philip" <[email protected]>
CC: "[email protected]" <[email protected]>
Subject: Re: [CF-metadata] request for new standard name
Dear Philip,
Thank you for your reply. In the meantime, I indeed found the
variable you propose. Dobson Unit would be much more convenient
instead of m, as it is much more used in the scientific community.
Best regards
Christophe
--
David Hassell
National Centre for Atmospheric Science (NCAS)
Department of Meteorology, University of Reading,
Earley Gate, PO Box 243,
Reading RG6 6BB, U.K.
Tel : 0118 3785613
Fax : 0118 3788316
E-mail: [email protected]
--
-----------------------------------------------------
Dr. Christophe LEROT
Belgian Institute for Space Aeronomy
Chemistry & Physics of Atmospheres
Avenue circulaire, 3
1180 Brussels
Belgium
phone: +32/(0)2-3730-407
mobile: +32/(0)472-81.87.00
mail: [email protected]
url: http://uv-vis.aeronomie.be/
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