Modeling of raindrop size distributions from multiwavelength rain attenuation measurements
نویسندگان
چکیده
منابع مشابه
Measurements of raindrop-size distributions from dual- polarization spectral observations
Rainfall radar observations depend on underlying raindropsize distributions. Since rain rates retrieval from radar measurements is problem of current interest there is great importance in independent measurements of naturally occurring drop-size distributions. Often in situ measurements of raindrop size distributions are performed using disdrometers (Bringi et al. 2003). Despite wide acceptance...
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The conversion of the radar reflectivity factor Z (mm6 m-3) to rain rate R (mm h-1) is a crucial step in the hydrological application of weather radar measurements. It has been common practice for over 50 years now to take for this conversion a simple power law relationship between Z and R. It is the purpose of this paper to explain that the fundamental reason for the existence of such power la...
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Estimation of raindrop size distribution over large spatial and temporal scales has been a long-standing goal of polarimetric radar. Algorithms to estimate the parameters of a gamma raindrop size distribution model from polarimetric radar observations of reflectivity, differential reflectivity, and specific differential phase are developed. Differential reflectivity is the most closely related ...
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This study presents a two-dimensional variational approach to retrieving raindrop size distributions (DSDs) from polarimetric radar data in the presence of attenuation. A two-parameter DSD model, the constrained-gamma model, is used to represent rain DSDs. Three polarimetric radar measurements, reflectivity (ZH), differential reflectivity (ZDR) and specific differential phase (KDP), are optimal...
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Tomoaki Mega, Hiroshi Hanado, Ken'ichi Okamoto (3) , (4) and Tomoo Ushio (1) Osaka Prefecture University, 1-1, Gakuen-Cho, Sakai, 599-8531, Osaka, Japan, E-mail:mega @aero.osakafu-u.ac.jp (2)Communications Research Laboratory, 4-2-1, Nukui-Kitamachi, Tokyo, 184-8795, Japan, E-mail:[email protected] (3) As (1) above, but E-mail: [email protected] (4) Earth Observation Research Center, ...
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ژورنال
عنوان ژورنال: Radio Science
سال: 1999
ISSN: 0048-6604
DOI: 10.1029/1998rs900045