Dual-wavelength Doppler Radar Studies of Thunderstorms

本研究的目的是探讨 闪电放电和云微物理过程 垂直指向、共线、UHF和VHF多普勒雷达。 在 雷暴，在UHF和VHF多普勒频谱 雷达在雷暴中，在超高频拍摄的多普勒频谱提供了 降水粒子的速度信息，而多普勒 在甚高频上取得的光谱提供了额外的速度信息 关于清新的空气 同时从这两个雷达获取数据将 完全解决了 多普勒功率谱到颗粒尺寸描述和 从这些分布导出的积分参数将是 检查闪电前后的显著变化是 在雷达波束中被探测到此外，假设 闪电通道作为一个完美的空气运动的示踪剂， 得到考验 最后，如果两者的绝对校准 雷达可以获得，然后两者的波长依赖性 闪电的体积反射率和湍流强度 将被确定。

The objective of this research is the relationship between lightning discharges and cloud micro.physical processes using vertically pointing, co.linear, UHF and VHF Doppler radars. In thunderstorms, Doppler spectra taken at UHF and VHF Doppler radars. In thunderstorms, Doppler spectra taken at UHF provide velocity information about precipitation particles, while Doppler spectra taken at VHF provide additional velocity information about the clear air. Simultaneous acquisition of data from these two radars will allow for a complete solution to the problem of transforming Doppler power spectra into particle size descriptions and integral parameters derived from these distributions will be examined for significant changes before and after lightning is detected in the radar beam. Further, the hypothesis that the lightning channel acts as a perfect tracer of the air motion will be tested. And, finally if an absolute calibration of both radars can be obtained, then the wavelength dependence of both the volume reflectivity of lightning and the turbulent intensity will be determined.