Tuesday, August 25, 2009

Comment Re: The Strange Flagstaff Sounding

Jimmy C. wrote:

Looks like the RAP website data are slightly different from the SPC archive:
http://www.spc.noaa.gov/exper/soundings/09082212_OBS/

perhaps due to missing data? Even the Wyoming radiosonde data web site has data for that layer. What isnt clear is if there is some quality control occurring at the RAP website.
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I should have mentioned the wind void on the RAP sounding plot - this gap was not a problem with the RRS data, as winds were observed through this layer.

There is some kind of software problem in the RAP plotting routine that sometimes causes winds not to be plotted through a layer - reason unknown, but I've seen many examples of this problem during last several years.

Good example of why, if something looks strange in a sounding, one should cross-check with the plots/data at other sounding access sites, e.g., SPC, Wyoming, FSL, etc.

Bob

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