Dear Gary

This version seems fine to me. Many thanks

Jonathan

> 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.
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