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Re: [cf-satellite] Proposal for band dimension and coordinate variable

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CF-SAT Listers-
Based on the various ways that bands/channels can be differentiated, I lean toward the first solution that Tom described (shown below).

On 7/20/2011 3:37 PM, Tom Whittaker wrote:
One simply used a name like
"band" solely as a dimension and defined a standard_name for this so
that code could recognize it as such.  Several other variables were
then used to define wavelength, etc., again using standard_names to
alert applications as to what they were.

The problem with the other is that there so many ways to differentiate channels. Rudi brought up polarization. Other issues include: - You'd also need frequency as a std variable (since microwave channels are generally titled that way). - Channels with same frequency but variable widths [where the center frequency is the same, but the range od sensitivity changes, like with SSMIS (http://en.wikipedia.org/wiki/SSMIS) and AMSU which is even more complex (http://en.wikipedia.org/wiki/Advanced_Microwave_Sounding_Unit) -Similar frequency but with differing optical path cell pressure (something sits in the optical path on the satellite ... a la SSU) http://www2.ncdc.noaa.gov/docs/podug/html/c4/sec4-2.htm


So I would recommend not creating coordinate axis types because there are so many ways to differentiate "bands".

Thoughts?
-Ken


--

Ken Knapp
Remote Sensing and Applications Division
National Climatic Data Center
151 Patton Ave
Asheville, NC 28801
828-271-4339 (voice) 828-271-4328 (fax)
IBTrACS:  http://www.ncdc.noaa.gov/oa/ibtracs/
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HURSAT:   http://www.ncdc.noaa.gov/oa/rsad/hursat/

"Studies show that 4 out of 3 people have trouble with fractions."
                                                          -Unknown



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