Dear Alison, > I think these names all follow the pattern of existing names and their > meanings are generally clear. One question - in your products, are > 'infrared' and 'near_infrared' separate ranges of wavelengths/frequencies? Please could you tell me the ranges so that I can include at least indicative values in the explanations of the names.
Indicative values would be: by using infrared radiances (4-20 micrometer). by using near-infrared radiances (1-4 micrometer). > For the three status flag names, I suggest that the units should be '1', > i.e. a dimensionless value, assuming that the variables will be accompanied > by flag_values and flag_meanings attributes. Yes, this is true indeed, these flags will be: liquid, ice and mixed. >If we can clarify these points then I think the names can be accepted for >inclusion in the standard name table. That would be great :) Best regards, Maarten Plieger On 01/24/2011 03:03 PM, [email protected] wrote: > Dear Maarten and Jonathan, > > Maarten has reminded me that the following names were discussed a few weeks > ago: > > - platform_zenith_angle (degree): "Platform zenith angle is the the angle > between the line of sight to the platform and the local vertical"; > - angle_of_rotation_from_solar_azimuth_to_platform_azimuth (degree): > "The angle of rotation between the solar azimuth angle and the platform > azimuth angle"; > - thickness_of_liquid_water_cloud (m): "Cloud thickness (cloud top height > minus cloud base)"; > - effective_radius_of_cloud_condensed_water_particles_at_cloud_top (m): > "Particle effective radius for both liquid and ice water particles"; > - thermodynamic_phase_of_cloud_water_particles_at_cloud_top (status_flag > liquid, ice and mixed): "The thermodynamic phase of particles at the top of > the cloud"; > - > thermodynamic_phase_of_cloud_water_particles_at_cloud_top_defined_by_infrared_radiance > (status_flag liquid, ice and mixed): "The thermodynamic phase of particles at > the top of the cloud derived by using infrared radiances"; > - > thermodynamic_phase_of_cloud_water_particles_at_cloud_top_defined_by_near_infrared_radiance > (status_flag liquid, ice and mixed):" The thermodynamic phase of particles at > the top of the cloud derived by using near-infrared radiances". > > I think these names all follow the pattern of existing names and their > meanings are generally clear. One question - in your products, are > 'infrared' and 'near_infrared' separate ranges of wavelengths/frequencies? > Please could you tell me the ranges so that I can include at least indicative > values in the explanations of the names. For the three status flag names, I > suggest that the units should be '1', i.e. a dimensionless value, assuming > that the variables will be accompanied by flag_values and flag_meanings > attributes. If we can clarify these points then I think the names can be > accepted for inclusion in the standard name table. > > Best wishes, > Alison > > ------ > Alison Pamment Tel: +44 1235 778065 > NCAS/British Atmospheric Data Centre Fax: +44 1235 446314 > STFC Rutherford Appleton Laboratory Email: [email protected] > R25, 2.22 > Harwell Oxford, Didcot, OX11 0QX, U.K. > > > From: [email protected] > [mailto:[email protected]] On Behalf Of Maarten Plieger > Sent: 30 November 2010 16:49 > To: Jonathan Gregory > Cc: [email protected] > Subject: Re: [CF-metadata] MSG Cloud physical properties codification > > Dear Jonathan, > > Good point. That is OK with us, off course. Thanks again! > > Regards, Maarten > > Jonathan Gregory schreef: > Dear Maarten > > Yesterday I didn't notice that these don't have _radiance on the end. I think > that would make them clearer, if OK with you. > > > thermodynamic_phase_of_cloud_water_particles_at_cloud_top_defined_by_infrared > thermodynamic_phase_of_cloud_water_particles_at_cloud_top_defined_by_near_infrared > > > When everybody agrees with these standard names, units and descriptions: > what would be the next step? > > Alison will consider them. She is responsible for moderating discussions and > updating the standard name table with agreed additions. > > Best wishes > > Jonathan > > > > -- Maarten Plieger KNMI, R&D Information and Observation Technology, De Bilt (t) +31 30 2206330 _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
