Radar system network at high resolution

高分辨率雷达系统网络

• 批准号: 19201036
• 负责人: KAWASAKI Zenichiro
• 金额: $ 31.2万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-19201036/
• 关键词: レーダ; 大気電気学; 気象学; 観測ネットワーク; 雷放電; 自然災害予測・分析・対策; 積乱雲; 雷; 自然現象観測

A high-resolution precipitation and lightning monitoring system was developed and operated. This monitoring is mainly utilized the Ku-band broadband radar (BBR) and the VHF broadband digital interferometer (DITF). The BBR can accurately measure the radar reflectivity factor and the mean Doppler velocity with 5 m resolution over a range from 40 m to several kilometers for 10 W power using a pulse compression technique. Two or more DITFs make us visualize lightning channel propagations in three dimensions. Moreover, we add new functions that integrate these observation data and disclose integration analyses results with the quasi real-time information disclosure system. Initial observations for severe storms with lightning during summer and winter thunderstorm season by these monitoring instruments indicate that we obtain detailed precipitation distribution and detect active convective cells with lightning discharges.

开发并运行了高分辨率降水和闪电监测系统。这种监测主要利用Ku波段宽带雷达（BBR）和VHF宽带数字干涉仪（DITF）。 BBR 可以使用脉冲压缩技术，以 5 m 的分辨率在 40 m 到几公里的范围内以 10 W 功率精确测量雷达反射率和平均多普勒速度。两个或多个 DITF 使我们能够在三个维度上可视化闪电通道传播。此外，我们还添加了新的功能，可以整合这些观测数据，并通过准实时信息披露系统披露整合分析结果。这些监测仪器对夏季和冬季雷暴季节雷电强风暴的初步观测表明，我们获得了详细的降水分布，并检测到具有闪电放电的活跃对流单体。

项目成果

ENSO and convective activities in Southeast Asia and western Pacific

• DOI: 10.1029/2007gl030758
• 发表时间: 2007-11
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: S. Yoshida;T. Morimoto;T. Ushio;Z. Kawasaki

Initial Observation Results for Precipitation on the Ku-band Broadband Radar Network

Ku波段宽带雷达网降水初步观测结果

• 发表时间: 2010
• 作者: Eiichi Yoshikawa;Satoru Yoshida;Takeshi Morimoto;Tomoo Ushio;Zen Kawasaki
• 通讯作者: Zen Kawasaki

Three-dimensional VHF Observations of positive cloud-to-ground flashes in summer thunderstorm

夏季雷暴云地正闪光的三维甚高频观测

• 发表时间: 2009
• 作者: Nakamura;et al.
• 通讯作者: et al.

The bi-directional leader observation in positive cloud-to-ground lightning flashes during summer thunderstorm season

夏季雷暴季节正云地闪的双向先导观测

• 发表时间: 2009
• 作者: Y.Nakamura;M.Akita;T.Morimoto;T.Ushio;Z.Kawasaki;M.Shimizu;M.Miki
• 通讯作者: M.Miki

Effects of charge distribution in thunderstorms on lightning progression paths in Darwin, Australia

雷暴中电荷分布对澳大利亚达尔文闪电进展路径的影响

• 发表时间: 2011
• 期刊: J.Atmos.Sci. Vol.68, No.4
• 作者: Akita M.;Y.Nakamura;S.Yoshida;T.Morimoto;T.Ushio;Z-I.Kawsaki;D.Wang
• 通讯作者: D.Wang