Dear Alejandro,

just one small comment.

We had recently a long discussion concerning wording of a few aerosol variables,
and some results of that discussion would also be relevant for your proposed
variable. You should probably substitute "cloud" with "cloud_particles".
Otherwise, it isn't clear whether you refer only to the cloud particle phase, or
to the whole system of particles and air. Also, you probably want to require a
co-ordinate variable "wavelength" in the definition.

Best regards,
Markus

Am 06.02.2014 10:54, schrieb Bodas-Salcedo, Alejandro:
> Dear CF list,
>
> I'd like to propose the following standard name:
>
> volume_extinction_coefficient_in_air_due_to_cloud
> Units: m-1
>
> Definition, following the aerosol extinction coefficient:
> The volume extinction coefficient is the fractional change of radiative flux 
> per unit path length. Extinction is the sum of absorption and scattering, 
> sometimes called "attenuation". "Extinction" is the term most commonly used 
> at optical wavelengths whereas "attenuation" is more often used at radio and 
> radar wavelengths. "Cloud" means suspended liquid or ice water droplets. 
>
> Regards,
>
> Alejandro
>

-- 
Dr. Markus Fiebig
Senior Scientist
Dept. Atmospheric and Climate Research (ATMOS)
Norwegian Institute for Air Research (NILU)
P.O. Box 100
N-2027 Kjeller
Norway

Tel.: +47 6389-8235
Fax : +47 6389-8050
e-mail: [email protected]
skype: markus.fiebig

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