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Title: Xバンド偏波レーダーを用いた雨滴粒径分布とその時空間構造及び降水量の推定手法の開発
Other Titles: DEVELOPING SPACE-TIME STRUCTURE OF RAINDROP SIZE DISTRIBUTION AND QPE METHOD FROM NEW DSD RETRIEVING METHOD USING X-BAND POLARIMETRIC RADAR
Authors: 山口, 弘誠  KAKEN_name
金原, 知穂  KAKEN_name
中北, 英一  kyouindb  KAKEN_id
Author's alias: YAMAGUCHI, Kosei
KIMPARA, Chiho
NAKAKITA, Eiichi
Keywords: 偏波レーダー
雨滴粒径分布
位相差変化率
降水量推定
polarimetric radar
raindrop size distribution
specific differential phase
QPE
Issue Date: 2012
Publisher: 公益社団法人 土木学会
Journal title: 土木学会論文集B1(水工学)
Volume: 68
Issue: 4
Start page: I_367
End page: I_372
Abstract: In Japan, test operating of X-band polarimetric radar network started in July, 2010 by Ministry of Land, Infrastructure, Transportation and Tourism. Polarimetric radar has an advantage over conventional non-polarimetric systems because they measure some parameters related to raindrop shape. In this research, a retrieval method of raindrop size distribution (DSD) is developed to improve accuracy of rainfall estimation. The new developed DSD retrieving method was superior to previous method when heavy rainfall occurs. Then, the method was used to figure out the characteristics of DSD in a convective storm. After retrieving DSD parameters, rainfall estimation for non-polarimetric radar is directly estimated from the retrieved DSD parameters. Two methods are used, and both are evaluated using disdrometer, and it is shown that both are well estimated when compared with previous studies.
Description: 水工学論文集第56巻
Rights: © 2012公益社団法人 土木学会
URI: http://hdl.handle.net/2433/194047
DOI(Published Version): 10.2208/jscejhe.68.I_367
Appears in Collections:Journal Articles

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