Dear Randy
I would favour the use of new standard names with difference_ in them, unless
there is such a large number of them that we require something general.
Standard name modifiers appear problematic in general, and their intention is
to name fields of metadata for a single quantity, which isn't what you need,
I would say.
Cheers
Jonathan
----- Forwarded message from "rhorne at excaliburlabs.com" <rhorne at excaliburlabs.com> -----
> From: "rhorne at excaliburlabs.com" <rhorne at excaliburlabs.com>
> To: cf-metadata at cgd.ucar.edu
> Date: Tue, 11 Jun 2013 11:33:27 -0400
> Subject: [CF-metadata] differences between collocated values of the same type
> of quantity (and standard_name)
>
>
>
> Folks:
>
>
>
> a few of our products include statistics (min, max, mean, std dev)
> associated with quantities that are the difference between the
> toa_brightness_temperature or sea_surface_skin_temperature obtained or
> calculated using two different methods at the same location in space and
> time.
>
>
>
> In the standard name table there is one standard name that is related to
> this scenario: "difference_of_air_pressure_from_model_reference". It would
> seem that establishing a new standard name for these difference values
> seems like an unnecessary expansion of the standard name table.
>
>
>
> Maybe adding a new standard_name modifier "difference" is a better idea.
>
> For example:
>
>
>
> float mean_of_temp_diff ;
>
> standard_name = "toa_brightness_temperature difference"
>
> units = "K" ;
>
> coordinates = "lat_range lon_range" ;
>
> cell methods = "area: mean (interval: 0.1 degree) " ;
>
>
>
> (Note that lat_range and lon_range are scalar coordinate variables with
> boundary variables that define the latitude and longitude extents. Also
> note that the spacing of the data from the source cells in 0.1 degrees in
> lat and lon.)
>
>
>
>
>
> Any thoughts on this ?
>
>
>
>
>
> very respectfully,
>
>
>
> randy
>
>
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----- End forwarded message -----
Received on Thu Jun 13 2013 - 11:31:03 BST
