Dear CF Board:
I'd like to follow up on the definition of the standard name,
tropical_cyclone_eye_brightness_temperature,
based on discussions that we have been having in recent days concerning
certain standard name
definitions related to hurricane-related metrics.
To summarize:
standard name: tropical_cyclone_eye_brightness_temperature
Canonical Units: K
Definition:
The warmest brightness temperature value in the eye region of a tropical
cyclone derived using the
Advanced Dvorak Technique, based on satellite observations.
Brightness_temperature of a body
is the temperature of a black body which radiates the same power per
unit solid angle per unit area.
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 2/25/2014 6:44 AM, Gary Meehan wrote:
> One clarification on the units of this proposed standard name, and
> that is that the units should be
> Kelvin, not Celsius.
>
> Thanks and regards,
>
> Gary
>
> On 2/24/2014 6:42 AM, Gary Meehan wrote:
>> Dear Jonathan,
>>
>> Just to summarize, then, the proposed standard name would thus be
>> tropical_cyclone_eye_brightness_temperature
>>
>> Units: Celsius
>>
>> Definition:
>> "tropical_cyclone_eye_brightness_temperature" means the warmest
>> brightness temperature value in the eye region
>> of a tropical cyclone (0 - 24 km from the storm center) derived using
>> the Advanced Dvorak Technique, based on
>> satellite observations.
>>
>> Thanks and regards,
>>
>> Gary
>>
>> On 2/21/2014 5:36 PM, Jonathan Gregory wrote:
>>> Dear Gary
>>>
>>>> It is actually the pixel with the warmest brightness temperature as
>>>> measured in a single IR band.
>>>> Beyond that, I do not think that one could specifically identify it
>>>> as SST, air temperature, etc.
>>> OK. It would be all right, and more informative, to say
>>> brightness_temperature
>>> in your new name. brightness_temperature is an existing stdname.
>>>
>>> Cheers
>>>
>>> Jonathan
>>> _______________________________________________
>>> CF-metadata mailing list
>>> CF-metadata at cgd.ucar.edu
>>> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
>>
>>
>
>
--
Gary Meehan
Senior Staff Scientist
Atmospheric and Environmental Research
131 Hartwell Avenue, Lexington, MA 02421-3126
Tel (781) 761-2228 ? Fax (781) 761-2299
e-mail: gmeehan at aer.com
Received on Fri Apr 25 2014 - 08:03:59 BST
