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
>
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> 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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Received on Mon Feb 23 2015 - 04:25:21 GMT
