Improvement of the humidity estimation method by applying radar imaging method

应用雷达成像法改进湿度估算方法

• 批准号: 24740321
• 负责人: FURUMOTO Jun-ichi
• 金额: $ 2.91万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24740321/
• 关键词: 水蒸気; レーダー; イメージング; 干渉計; RASS; MUレーダー; 気球観測; 極端気象; ゲリラ豪雨; 大気レーダー; 突風災害; ウインドプロファイラ; リモートセンシング; 降雨; 豪雨

This study aims to improve the vertical resolution of radar measurement by applying variational assimilation method to the oversampled radar data to implement the humidity estimation with the wind profiling radar with the higher precision. The conventional method to improve vertical resolution of radar measurement does not consider the radar parameter conservativeness, which is essential for the quantitative evaluation of radar data. Our newly developed algorithm is tested by the quasi-radar data generated from data of balloon measurement, showing the excellent performance of our method. We also aimed the improvement of humidity estimation with the radar in the aspect of the elucidation of generation mechanism in clear-air echo. The hyper-high-resolution radiosonde observation is conducted simultaneously with the radar measurement. The preliminary results shows the good coincide, and the further analysis is very promising to improve humidity estimation with the wind profiling radar

本研究旨在利用变分同化方法对过采样雷达资料进行处理，以提高雷达测量的垂直分辨率，实现风廓线雷达高精度的湿度估计。传统的提高雷达测量垂直分辨率的方法没有考虑雷达参数的保守性，而雷达参数的保守性是定量评价雷达数据的必要条件。我们的新开发的算法进行了测试，从气球测量数据产生的准雷达数据，显示了我们的方法的优良性能。在阐明晴空回波产生机理方面，对雷达测湿方法进行了改进。超高分辨率无线电探空仪观测与雷达测量同时进行。初步结果表明，两者吻合较好，进一步的分析对于改进风廓线雷达的湿度估计非常有希望

项目成果

Improved Performance in Horizontal Wind Estimation Using a Spaced Antenna Drift Technique and Signal Processing Approaches.

使用间隔天线漂移技术和信号处理方法提高水平风估计的性能。

• DOI: 10.1109/tgrs.2012.2214442
• 发表时间: 2013
• 期刊: IEEE Trans. on Remote Sens. Geo. Sci.
• 作者: Kumar;S.;V.K. Anandan;T. Tsuda;J. Furumoto;and Ch. G. Reddy
• 通讯作者: and Ch. G. Reddy

Observations of migrating katabatic winds using a dense monitoring network

使用密集监测网络观测移动下降风

• 发表时间: 2014
• 期刊: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
• 影响因子: 5.5
• 作者: Furumoto;J.;H. Sakamoto;K. Higashi;H. Tsuboya;K. Kano;Y.Kikkawa;J. Ishihama;Y. Kaneko;H. Hashiguchi;and M. Yamamoto
• 通讯作者: and M. Yamamoto

Three-dimensional radar imaging of atmospheric layer and turbulence structures using multiple receivers and multiple frequencies

使用多个接收器和多个频率对大气层和湍流结构进行三维雷达成像

• 发表时间: 2014
• 期刊: Annales Geophysicae
• 影响因子: 1.9
• 作者: J. S. Chen;J. Furumoto;and M. Yamamoto
• 通讯作者: and M. Yamamoto

Improvement of Vertical Resolutions in Wind Profiling Radars to Detect Detailed

提高风廓线雷达的垂直分辨率以检测详细信息

• 发表时间: 2013
• 作者: Kouketsu;T.;M. Oue;T. Ohigashi;K. Tsuboki;H. Minda;H. Uyeda;K. Suzuki;Y. Wakazuki;and E. Nakakita;Jun-ichi Furumoto
• 通讯作者: Jun-ichi Furumoto

ウィンドプロファイラの側方放射を利用した水蒸気推定手法に関する研究

利用风廓线仪侧向辐射的水汽估算方法研究

• 作者: 伊中茂;古本淳一;瀬古弘;津田敏隆;橋口浩之;石原正仁
• 通讯作者: 石原正仁