Re: [CF-metadata] new standard name requests

2014-02-13 Thread Bedka, Kristopher M. (LARC-E302)[SCIENCE SYSTEMS AND APPLICATIONS, INC]
Charlie and John: Thanks for the discussion, this is really good background information for the list. The effective or radiative center height that we retrieve can be at least 1 km below the true cloud top as measured by a lidar. We also produce a cloud top height product that matches well

Re: [CF-metadata] new standard name requests

2014-02-13 Thread Jonathan Gregory
Dear Kris, John, et al. If you go this route, a perhaps clearer option for the name is suggested by an existing pattern: height_at_cloud_top_defined_by_infrared_radiation (or _infrared_reflection, or something similar) This has the added benefit that it puts the emphasis on what is

Re: [CF-metadata] Vertical datums (again)

2014-02-13 Thread Jonathan Gregory
Dear Karl I seem to recall that the normal to a geoid surface does not in general point in the same direction as the normal to the ellipsoid surface at the same place. If that is true, would that be added justification for giving different standard names to heights relative to those

[CF-metadata] Vertical datums (again)

2014-02-13 Thread Jonathan Gregory
Dear Balaji I understand it's blurry, and I suppose all I'm arguing for is some general vigilance against proliferation of names. I completely agree with that sentiment! The blurriness comes in places where coordinates are discrete, from a permissible set, such as area_types. This was done to

Re: [CF-metadata] new standard name requests

2014-02-13 Thread Charlie Zender
I think that the name should encode the method if the result is sensitive to the method. Here there be dragons. Can it be said that this is not a different measurement of the same thing, but a measurement of a different property? Yes. Kris says it is not adjusted to be a true cloud-top