Validation and Meteorological Applications of Quantitative Radar Rain Measurements

定量雷达雨量测量的验证和气象应用

• 批准号: 9419523
• 负责人: Arthur Jameson
• 金额: $ 24.01万
• 依托单位: RJH Scientific Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-04-01 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9419523&HistoricalAwards=false
• 关键词: Validation; Meteorological; Applications; Quantitative; Radar

Jameson/Abstract ATM-9419523 The objectives of this research are: (1) to validate recent advances in radar techniques for estimating the rainfall rate (R) and rain water content (W) by comparing independent estimates of R, W and the mass weighted mean drop diameter Dm computed using VHF (and sometimes coincident UHF) profiler measurements of the drop size distribution to simultaneous estimates in the same sampling volumes calculated using measurements form the Bureau of Meteorological Research Centre (BMRC) C-band polarization radar located near Darwin, Australia; (2) to explore the merit of using measurements of the differential phase between horizontal and vertical polarizations to correct for the effects of attenuation on C-band radar power measurements, to compare theoretical and experimental relations between the specific differential phase and attenuation coefficients, and to look for the effect of cloud attenuation by using C-ban polarization radar measurements in storms near Darwin.

Jameson/Abstract ATM-9419523 这项研究的目标是：(1) 通过比较 R、W 和质量加权的独立估计，验证用于估计降雨率 (R) 和雨水含量 (W) 的雷达技术的最新进展使用 VHF（有时是同时发生的 UHF）轮廓仪测量液滴尺寸分布，计算平均液滴直径 Dm，以使用气象研究中心 (BMRC) 的测量数据计算相同采样体积中的同步估计值C波段偏振雷达位于澳大利亚达尔文附近； (2) 探索使用水平和垂直极化之间的相位差测量来校正衰减对 C 波段雷达功率测量的影响的优点，比较特定相位差和衰减系数之间的理论和实验关系，以及通过在达尔文附近的风暴中使用 C-ban 偏振雷达测量来寻找云衰减的影响。