Dear Alison and CF community,
Please could you let me know what's the status of these names? Are they ready to go into the next update of the standard names table?
Thanks,
Alejandro
> -----Original Message-----
> From: CF-metadata [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf Of
> Jonathan Gregory
> Sent: 25 February 2015 20:15
> To: cf-metadata at cgd.ucar.edu
> Subject: [CF-metadata] Fwd: Re: Proposal for standard names: liquid and ice cloud
> fractions
>
> Dear Alejandro
>
> That looks good to me. Thanks. Yes, I agree, you might see "ice" used for
> other frozen substances than water (including "dry ice") but I don't believe
> we use it in that more general sense in CF standard names.
>
> Best wishes
>
> Jonathan
>
> ----- Forwarded message from "Bodas-Salcedo, Alejandro"
> <alejandro.bodas at metoffice.gov.uk> -----
>
> > Date: Tue, 24 Feb 2015 10:14:21 +0000
> > From: "Bodas-Salcedo, Alejandro" <alejandro.bodas at metoffice.gov.uk>
> > To: "Gregory, Jonathan" <j.m.gregory at reading.ac.uk>,
> > "cf-metadata at cgd.ucar.edu" <cf-metadata at cgd.ucar.edu>
> > Subject: RE: [CF-metadata] Fwd: Re: Proposal for standard names: liquid and
> > ice cloud fractions
> >
> > Dear Jonathan,
> >
> > Thanks for your comment. When I proposed ice_water_cloud I was trying to keep
> the same format for both phases, but I ice_cloud seems fine to me (I've seen 'ice'
> used for other compounds, but perhaps it's not correct).
> > With this change, the names would be:
> >
> > - liquid_water_cloud_area_fraction
> > - ice_cloud_area_fraction
> > - liquid_water_cloud_area_fraction_in_atmosphere_layer
> > - ice_cloud_area_fraction_in_atmosphere_layer
> >
> > Regards,
> >
> > Alejandro
> >
> > > -----Original Message-----
> > > From: CF-metadata [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf Of
> > > Jonathan Gregory
> > > Sent: 24 February 2015 06:47
> > > To: cf-metadata at cgd.ucar.edu
> > > Subject: [CF-metadata] Fwd: Re: Proposal for standard names: liquid and ice
> cloud
> > > fractions
> > >
> > > Dear Alejandro
> > >
> > > I think that liquid_water_cloud would be preferable to liquid_cloud, on
> > > grounds of consistency as you say, and also clarity. liquid_water is a phrase
> > > used in many standard names to refer to cloud composition e.g.
> > > atmosphere_mass_content_of_convective_cloud_liquid_water
> > > to give just one example. What would ice_water_cloud mean? The phrase
> > > ice_cloud is used in the existing standard_name
> > > number_concentration_of_ice_crystals_in_air_at_ice_cloud_top
> > > so I think ice_cloud would be OK to use if that's what you mean.
> > >
> > > Best wishes
> > >
> > > Jonathan
> > >
> > >
> > > ----- Forwarded message from "Bodas-Salcedo, Alejandro"
> > > <alejandro.bodas at metoffice.gov.uk> -----
> > >
> > > > Date: Mon, 23 Feb 2015 11:25:21 +0000
> > > > From: "Bodas-Salcedo, Alejandro" <alejandro.bodas at metoffice.gov.uk>
> > > > To: 'Martin Raspaud' <martin.raspaud at smhi.se>, "cf-
> metadata at cgd.ucar.edu"
> > > > <cf-metadata at cgd.ucar.edu>
> > > > Subject: Re: [CF-metadata] Proposal for standard names: liquid and ice cloud
> > > > fractions
> > > >
> > > > Dear Martin,
> > > >
> > > > Thanks for pointing me to that thread, it was very useful. The standard names
> I
> > > am proposing are similar in concept to the existing
> > > 'thickness_of_liquid_water_cloud', so I guess the proposed names make sense.
> > > > I can think of two possible options:
> > > >
> > > > The one that I originally proposed:
> > > >
> > > > - liquid_cloud_area_fraction
> > > > - ice_cloud_area_fraction
> > > > - liquid_cloud_area_fraction_in_atmosphere_layer
> > > > - ice_cloud_area_fraction_in_atmosphere_layer
> > > >
> > > > Or
> > > >
> > > > - liquid_water_cloud_area_fraction
> > > > - ice_water _cloud_area_fraction
> > > > - liquid_water _cloud_area_fraction_in_atmosphere_layer
> > > > - ice_water_cloud_area_fraction_in_atmosphere_layer
> > > >
> > > > The second set of names seems to be more consistent with existing names.
> > > >
> > > > Regards,
> > > >
> > > > Alejandro
> > > >
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: CF-metadata [mailto:cf-metadata-bounces at cgd.ucar.edu] On
> Behalf Of
> > > > > Martin Raspaud
> > > > > Sent: 21 February 2015 21:24
> > > > > To: cf-metadata at cgd.ucar.edu
> > > > > Subject: Re: [CF-metadata] Proposal for standard names: liquid and ice
> cloud
> > > > > fractions
> > > > >
> > > > > -----BEGIN PGP SIGNED MESSAGE-----
> > > > > Hash: SHA1
> > > > >
> > > > > Alejandro,
> > > > >
> > > > > Not sure it's related, but there was a thread on cloud physical
> > > > > properties a few year ago:
> > > > > http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2011/048566.html
> > > > >
> > > > > Best regards,
> > > > > Martin
> > > > >
> > > > >
> > > > > On 2015-02-20 17:59, Bodas-Salcedo, Alejandro wrote:
> > > > > > Dear All,
> > > > > >
> > > > > > I would like to propose new standard names for liquid and ice cloud
> > > > > > fractions (as far as I can see, they don't exist). I am not sure if
> > > > > > they follow the spirit of the CF conventions because cloud phase is
> > > > > > not a well defined concept. I would appreciate your comments on
> > > > > > this.
> > > > > >
> > > > > > Regards,
> > > > > >
> > > > > > Alejandro
> > > > > >
> > > > > > ** liquid_cloud_area_fraction
> > > > > >
> > > > > > "X_area_fraction" means the fraction of horizontal area occupied by
> > > > > > X. "X_area" means the horizontal area occupied by X within the grid
> > > > > > cell. Cloud area fraction is also called "cloud amount" and "cloud
> > > > > > cover". The cloud area fraction is for the whole atmosphere column,
> > > > > > as seen from the surface or the top of the atmosphere. The cloud
> > > > > > area fraction in a layer of the atmosphere has the standard name
> > > > > > cloud_area_fraction_in_atmosphere_layer.
> > > > > >
> > > > > > Units: 1
> > > > > >
> > > > > > ** ice_cloud_area_fraction
> > > > > >
> > > > > > "X_area_fraction" means the fraction of horizontal area occupied by
> > > > > > X. "X_area" means the horizontal area occupied by X within the grid
> > > > > > cell. Cloud area fraction is also called "cloud amount" and "cloud
> > > > > > cover". The cloud area fraction is for the whole atmosphere column,
> > > > > > as seen from the surface or the top of the atmosphere. The cloud
> > > > > > area fraction in a layer of the atmosphere has the standard name
> > > > > > cloud_area_fraction_in_atmosphere_layer.
> > > > > >
> > > > > > Units: 1
> > > > > >
> > > > > > ** liquid_cloud_area_fraction_in_atmosphere_layer
> > > > > >
> > > > > > "Layer" means any layer with upper and lower boundaries that have
> > > > > > constant values in some vertical coordinate. There must be a
> > > > > > vertical coordinate variable indicating the extent of the layer(s).
> > > > > > If the layers are model layers, the vertical coordinate can be
> > > > > > model_level_number, but it is recommended to specify a physical
> > > > > > coordinate (in a scalar or auxiliary coordinate variable) as well.
> > > > > > "X_area_fraction" means the fraction of horizontal area occupied by
> > > > > > X. "X_area" means the horizontal area occupied by X within the grid
> > > > > > cell. Cloud area fraction is also called "cloud amount" and "cloud
> > > > > > cover".
> > > > > >
> > > > > > Units: 1
> > > > > >
> > > > > > ** ice_cloud_area_fraction_in_atmosphere_layer
> > > > > >
> > > > > > "Layer" means any layer with upper and lower boundaries that have
> > > > > > constant values in some vertical coordinate. There must be a
> > > > > > vertical coordinate variable indicating the extent of the layer(s).
> > > > > > If the layers are model layers, the vertical coordinate can be
> > > > > > model_level_number, but it is recommended to specify a physical
> > > > > > coordinate (in a scalar or auxiliary coordinate variable) as well.
> > > > > > "X_area_fraction" means the fraction of horizontal area occupied by
> > > > > > X. "X_area" means the horizontal area occupied by X within the grid
> > > > > > cell. Cloud area fraction is also called "cloud amount" and "cloud
> > > > > > cover".
> > > > > >
> > > > > > Units: 1
> > > > > >
> > > > > >
> > > > >
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> > > > > Version: GnuPG v2.0.22 (GNU/Linux)
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> > > > >
> > >
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> > > > >
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> > >
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> > >
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> > > > >
> > >
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> > >
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Received on Wed Mar 09 2016 - 04:16:01 GMT
