Dear Jonathan,
Thank you for your insight.
Here is how I would like to propose the definition for this new standard
name. Summarizing:
Standard_Name: radius_of_tropical_cyclone_central_dense_overcast_region
Canonical_Units: m
Definition:
The average radius of a central region of clouds in tropical cyclones
lacking well-defined eye features,
which is computed by averaging the great circle distance in four
cardinal directions. The radius in
each direction is measured from the estimated storm center position to a
warm point that exceeds a
threshold brightness temperature at top of atmosphere limit. The
threshold applied should be recorded
in a coordinate variable having the standard_name of
toa_brightness_temperature. A coordinate
variable of radiation_wavelength,
sensor_band_central_radiation_wavelength, or radiation_frequency
may be specified to indicate that the brightness temperature applies at
specific wavelengths or frequencies.
Sincerely,
Gary
On 4/23/2014 11:30 AM, Jonathan Gregory wrote:
Dear Gary
In your new definition, the threshold is not stated, and I agree that it better
in principle. However it would be informative to record the threshold used, I
imagine. This could be done like this:
The average radius of a central region of clouds in tropical
cyclones lacking well-defined eye features
which is computed by averaging the great circle distance in four
cardinal directions. The radius
in each direction is measured from the estimated storm center
position to a warm point that exceeds
a threshold temperature limit.
The threshold applied should be recorded in a coordinate variable having the
standard_name of air_temperature_threshold.
It could be a scalar or a size-one coordinate variable.
Best wishes
Jonathan
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Atmospheric and Environmental Research
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