Journal of the Meteorological Society of Japan. Ser. II
Online ISSN : 2186-9057
Print ISSN : 0026-1165
ISSN-L : 0026-1165
Notes and Correspondence
Re-Evaluation of the Collection Efficiency of the Hydrometeor Videosonde for Dry Snow Particles
Narihiro ORIKASAMasataka MURAKAMIMizuho HOSHIMOTOYoshinori YAMADA
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2005 Volume 83 Issue 3 Pages 439-448

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Abstract

The collection efficiency of a hydrometeor videosonde (HYVIS) for dry snow particles is re-evaluated. This is estimated from comparisons with simultaneous aircraft data taken from a warm frontal cloud. The observed cloud is relatively uniform below an altitude of 5.5 km, where the standard deviation of ice particle concentrations is less than 40%. Comparing both size spectra measured with the balloonborne HYVIS and the airborne two-dimensional optical array probe within comparable size ranges (300 to 1500 μm) reveals that the collection efliciency of the HYVIS for dry snow particles is approximately 0.5, with an uncertainty of 50%, assuming that the airborne probe provides reference concentrations in these size ranges.

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© 2005 by Meteorological Society of Japan
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