VALIDATION OF RAINFALL INTENSITY ESTIMATED USING THE LATEST C-BAND POLARIMETRIC RADAR

• NAKAKITA Eiichi

  京都大学 防災研究所

• TAKEHATA Hidenobu

  京都大学 工学研究科

• NAKAGAWA Katsuhiro

  情報通信研究機構

Bibliographic Information

Other Title

• 最新型Cバンド偏波レーダを用いた降雨量推定精度の検証

Abstract

Dual polarimetric radar has been developed and partly utilizedinmeteorology and hydrology in these twenty years because of its potential ability in estimating drop size distribution (DSD) and in discriminating precipitation type. Ministryof Infrastructure, Land and Transportation (MILT) in Japan put Shakadake operational C band Radar to practical use in 1992. However, large improvement had not been realized because of its initial technical stage. Under these circumstances, this study investigates observation precision of the latest C band polarimetric radar for promoting replacement of Japanese operational radars into operational polarimetric radars. As results, this study shows Z_HH Z_DR and K_DP observed bythe polarization radar well fit to non-parametricallycomputed Z_HH, Z_DR and K_DP using observed DSD, respectively. Also, this study shows “Radar observed ZDR-Dm of observed DSD” relation is consistent with observed DSD. Especially, K_DP, which is free from attenuation problem, is suitable to estimate the strong rainfall. Parameter from the polarimetric radar has high possibility to improve real-time rainfall estimation.

Journal

• PROCEEDINGS OF HYDRAULIC ENGINEERING

  PROCEEDINGS OF HYDRAULIC ENGINEERING 51 325-330, 2007

  Japan Society of Civil Engineers

Keywords

• C-bandpolarimetric radar
• rainfall estimation
• differential reflectivity
• specific differential phase

Details

• CRID: 1390001205170959744
• NII Article ID: 130003842464
• DOI: 10.2208/prohe.51.325
• ISSN: 18849172
• ISSN: 09167374
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed