Study on atmospheric radar scattering mechanism based on comparison with direct measurements using unmanned aerial vehicles

• Project/Area Number: 15K13568
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Kyoto University
• Principal Investigator: Hashiguchi Hiroyuki 京都大学, 生存圏研究所, 准教授 (90293943)
• Research Collaborator: Kantha Lakshmi 米・コロラド大学, 教授 ; Lawrence Dale A. 米・コロラド大学, 教授 ; Luce Hubert 仏・トゥーロン大学, 準教授 ; Wilson Richard 仏・LATMOS, CNRS, 准教授 ; 矢吹 正教 京都大学, 生存圏研究所, 助教 (80390590) ; 津田 敏隆 京都大学, 生存圏研究所, 教授 (30115886)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 小型無人航空機 / 大気レーダー / 大気乱流 / MUレーダー / ウィンドプロファイラー

Outline of Final Research Achievements

An atmospheric radar (wind profiling radar) can continuously observe the height profiles of wind velocities with high temporal resolution. It is widely used for meteorological research, operational forecasting, and so on. Scattering targets of the atmospheric radar in the clear air conditions are fluctuations of radio refractive index due to atmospheric turbulence. Although the relation between temperature and humidity fluctuations and radar echoes has been discussed from the simultaneous observation with the radiosondes and has been generally explained, the difference between them is due to the difference between the observation volumes of radar and radiosonde. In this study, we measured directly over the MU radar with a small unmanned aerial vehicle (UAV) equipped with a meteorological sensor and simultaneously observed the same region. Observation field campaigns called the Shigaraki UAV-Radar Experiment (ShUREX) were carried out in 2015 and 2016.

Research Products

• [Int'l Joint Research] University of Colorado Boulder(米国)
• [Int'l Joint Research] Toulon University/Pierre et Marie Curie University/LATMOS(フランス)
• [Int'l Joint Research] University of Colorado Boulder(米国)
• [Int'l Joint Research] Toulon University/Pierre et Marie Curie University/LATMOS(フランス)
• [Journal Article] Comparisons between high-resolution profiles of squared refractive index gradient M2 measured by the Middle and Upper Atmosph ere Radar and unmanned aerial vehicles (UAVs) during the Shigaraki UAV-Radar Experiment 2015 campaign (2017)
  • Author(s): Hubert Luce, Lakshmi Kantha, Hiroyuki Hashiguchi, Dale Lawrence, Masanori Yabuki, Toshitaka Tsuda, and Tyler Mixa
  • Journal Title: Ann. Geophys. Volume: 35 Issue: 3 Pages: 423-441
  • DOI: 10.5194/angeo-35-423-2017
  • NAID: 120006313625
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Spectral parameters estimation in precipitation for 50-MHz band atmospheric radars (2015)
  • Author(s): Tong Gan, Masayuki K. Yamamoto, Hiroyuki Hashiguchi, Hajime Okamoto, and Mamoru Yamamoto
  • Journal Title: Radio Sci. Volume: 50 Issue: 8 Pages: 789-803
  • DOI: 10.1002/2014rs005643
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] 小型無人航空機・MUレーダー同時観測実験 (2016)
  • Author(s): 森昂志・橋口浩之・Lakshmi Kantha・Dale Lawrence・Tyler Mixa・Hubert Luce・Richard Wilson・津田敏隆・矢吹正教
  • Organizer: 日本気象学会
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2016-10-26
• [Presentation] 小型無人航空機・MUレーダー同時観測実験 (2016)
  • Author(s): 森昂志・橋口浩之・Lakshmi Kantha・Dale Lawrence・Tyler Mixa・Hubert Luce・Richard Wilson・津田敏隆・矢吹正教
  • Organizer: 第10回MUレーダー・赤道大気レーダーシンポジウム
  • Place of Presentation: 京都大学宇治キャンパス（京都府宇治市）
  • Year and Date: 2016-09-08
• [Presentation] 小型無人航空機・MUレーダー同時観測実験 (2016)
  • Author(s): 橋口浩之・森昂志・Lakshmi Kantha・Dale Lawrence・Tyler Mixa・Hubert Luce・Richard Wilson・津田敏隆・矢吹正教
  • Organizer: 日本地球惑星科学連合
  • Place of Presentation: 幕張メッセ国際会議場（千葉県幕張市）
  • Year and Date: 2016-05-22
• [Presentation] 小型無人航空機・MUレーダー同時観測実験 (2016)
  • Author(s): 森昂志・橋口浩之・Lakshmi Kantha・Dale Lawrence・Tyler Mixa・Hubert Luce・Richard Wilson・津田敏隆・矢吹正教
  • Organizer: 日本気象学会
  • Place of Presentation: 国立オリンピック記念青少年総合センター(東京都渋谷区)
  • Year and Date: 2016-05-18
• [Presentation] Shigaraki UAV-Radar Experiment (ShUREX 2015) (2016)
  • Author(s): 森昂志・橋口浩之・Lakshmi Kantha・Dale Lawrence・Mixa Tyler・Hubert Luce・Richard Wilson・津田敏隆 ・矢吹正教
  • Organizer: 第29回大気圏シンポジウム
  • Place of Presentation: 宇宙航空研究開発機構（神奈川県相模原市）
  • Year and Date: 2016-03-08
• [Presentation] Shigaraki UAV-Radar Experiment (ShUREX 2015) (2015)
  • Author(s): 橋口浩之・Lakshmi Kantha・Dale Lawrence・Mixa Tyler・Hubert Luce・Richard Wilson・津田敏隆・矢吹正 教・森昂志
  • Organizer: 第9回MUレーダー・赤道大気レーダーシンポジウム
  • Place of Presentation: 京都大学宇治キャンパス（京都府宇治市）
  • Year and Date: 2015-09-10