Validation and Meteorological Applications of Quantitative Radar Rain Measurements

Jameson/Abstract ATM-9419523 本研究的目标是：（1）通过比较独立的降雨率（R）估计值和雨水含量（W）估计值，验证雷达技术的最新进展，W和使用VHF计算的质量加权平均液滴直径Dm（有时候是UHF）液滴大小分布的剖面仪测量值与使用气象研究中心的测量值计算的相同采样体积的同时估计值（BMRC）位于澳大利亚达尔文附近的C波段极化雷达;（2）探讨了利用水平和垂直极化之间的微分相位测量来校正衰减对C波段雷达功率测量的影响的优点，比较了微分相位与衰减系数之间的理论和实验关系，并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。

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.