Physics – Geophysics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3720802y&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 20, CiteID L20802
Physics
Geophysics
Radio Science: Radar Atmospheric Physics (1220), History Of Geophysics: Atmospheric Sciences, Atmospheric Processes: Precipitation (1854), Biogeosciences: Remote Sensing
Scientific paper
We examine the vertical structure of the raindrop size distribution (DSD) in the lower atmospheric boundary layer (ABL) below altitudes of 300 m, where conventional radars typically do not observe. The DSD in the lower ABL is retrieved using Ku-band broadband radar (BBR) having an observational range of 50 m to 15 km, and a high range resolution of several meters and a 3-dB beam width of 3 deg. The radar-retrieved DSD are in excellent agreement with the DSD measured with a co-located, 2 dimensional video disdrometer with correlation coefficients over 0.96 in both stratiform and convective rain events. While the DSD reveals no significant change in the stratiform event, the growth process increases about 2 times in the number of raindrops larger than 0.5 mm in diameter in the convective event. This growth process in the ABL is important when we discuss the rainfall rate from radar reflectivity factor.
Kawasaki Zen
Kida Satoshi
Morimoto Takeshi
Ushio Tomo-o.
Yoshida Satoru
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