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First Measurements in Polar Regions
Atmospheric temperature profile and structure from Antarctica, figure 8 daytime, figure 9 nighttime showing a severe temperature inversion which is misrepresented in radiosonde data, is too coarse. I point out this implies surface cooling failure and is to be expected from a radiative regime which is contrary to the convective, scoured dayside. This also fits with the Leroux MPH which are more prevalent during polar night.
2003 paper
A New Microwave Temperature Profiler – First Measurements in Polar Regions
E. N. Kadygrov, A. V. Koldaev, and A. S. Viazankin
Central Aerological Observatory, Moscow, Russia
A. Argentini, and A. Conidi
Institute of Atmospheric Physics, CNR, Italy
“Temperature inversions are a ubiquitous feature of the high latitude atmospheric boundary layer (ABL). In Polar Regions, the temperature inversion is a complicated phenomenon involving interactions between surface radiative cooling, subsidence and warm air advection. …”
PDF here
The paper discusses the known shortcomings of radiosonde, the infrequent flights, lack of resolution, with polar region data severely affected.
Existing instruments were coarse so a much narrower beam is used 0.5 degree instead of 5.0 degree.
Previously Low Level Noctural Jets have been discussed, poor understood features of nightside. An excellent website was indicated
http://www.windwisdom.net/nllj.htm
Post by Tim Channon
2012-12-21 12:20:13
Source: http://tallbloke.wordpress.com/2012/12/21/first-measurements-in-polar-regions/
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