Doppler Radar Studies of Meteorological Phenomena

多普勒雷达已被证明是研究许多气象现象的宝贵工具。首席研究员将综合运用多普勒雷达数据、理论研究和数值模拟来解决一系列的气象研究问题，包括：(1)利用简单的数值模型和美国国家科学基金会资助的两个野外项目收集的多普勒雷达数据，研究液滴破碎在强下沉气流（微暴）增强和形成中的作用；(2)利用高分辨率飞机数据验证了确定边界层湍流动能和动量通量的多普勒雷达新技术；(3)理论研究和实际数据将用于开发和测试新的多普勒速度谱宽度估计方法。最后一个目标将利用一个独特的、最先进的处理器收集的数据，该处理器最近才安装在CHILL国家雷达设施上

Doppler radar has proven to be an invaluable tool for the study of many meteorological phenomena. The Principal Investigator will use a combination of Doppler radar data, theoretical studies and numerical modelling to attack a broad range of meteorological research problems including: (1) Simple numerical models and previously collected Doppler radar data from two NSF sponsored field projects will be used to study the role of drop breakup in the intensification and formation of severe downdrafts (microbursts); (2) New techniques for determining Doppler radar derived turbulent kinetic energy and momentum fluxes in the boundary layer will be verified with high resolution aircraft data; (3) Theoretical studies and actual data will be used to develop and test new estimators of the width of Doppler velocity spectrum. This last goal will utilize data collected with a unique, state-of-the-art processor which has only recently been installed on the CHILL National Radar Facility