Dear Jonathan W., All,
The following standard names have been discussed and agreed. They will be added to the standard name table at the next update.
geopotential_height_at_volcanic_ash_cloud_top (m)
'Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name "height", which is relative to the surface. "Volcanic_ash" means the fine-grained products of explosive volcanic eruptions, such as minerals or crystals, older fragmented rock (e.g. andesite), and glass. Particles within a volcanic ash cloud have diameters less than 2 mm. "Volcanic_ash" does not include non-volcanic dust.'
atmosphere_mass_content_of_volcanic_ash (kg m-2)
'"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. "Volcanic_ash" means the fine-grained products of explosive volcanic eruptions, such as minerals or crystals, older fragmented rock (e.g. andesite), and glass. Particles within a volcanic ash cloud have diameters less than 2 mm. "Volcanic_ash" does not include non-volcanic dust.'
Best wishes,
Alison
------
Alison Pamment Tel: +44 1235 778065
NCAS/British Atmospheric Data Centre Email: alison.pamment at stfc.ac.uk
STFC Rutherford Appleton Laboratory
R25, 2.22
Harwell Oxford, Didcot, OX11 0QX, U.K.
> -----Original Message-----
> From: CF-metadata [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf
> Of Jonathan Wrotny
> Sent: 10 June 2013 14:36
> To: Jonathan Gregory
> Cc: cf-metadata at cgd.ucar.edu
> Subject: Re: [CF-metadata] new standard name:
> volcanic_ash_cloud_geopotential_height
>
> Dear Jonathan Gregory,
>
> This name works perfectly fine for me. Thanks,
>
> Jonathan Wrotny
>
> On 6/7/2013 3:49 AM, Jonathan Gregory wrote:
> > Dear Jonathan
> >
> >> Standard Name: volcanic_ash_cloud_top_geopotential_height
> > I agree with Andreas's clarification that it refers to the cloud top. This now
> > makes quite a long phrase which could be prone to incorrect parsing. What
> about
> > geopotential_height_at_volcanic_ash_cloud_top
> > which is analogous, for instance, to the existing name
> > air_pressure_at_convective_cloud_top
> >
> > Cheers
> >
> > Jonathan
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>
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Received on Tue Nov 05 2013 - 07:49:20 GMT
