CAREER: Improved Knowledge on Precipitation Microphysics for Advancing Radar Rainfall Estimation and Quantitative Precipitation Forecasting.

职业：提高降水微物理知识，推进雷达降雨估算和定量降水预报。

• 批准号: 0132942
• 负责人: Emmanouil Anagnostou
• 金额: $ 22.48万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-02-01 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0132942&HistoricalAwards=false
• 关键词: CAREER; Improved; Knowledge; Precipitation; Microphysics

0132942AnagnostouOur understanding and ability to predict and respond to changes in the hydrologic environment cannot be properly addressed in the absence of reliable precipitation information. Proposed research aims at investigating the following questions: What are the quantitative limitations and uncertainty of current operational single polarization radar (e.g., WSR-88D) in rainfall estimation, and what are the advantages/disadvantages of X-band polarimetric measurements over current S-band systems for various space and time scales? Those questions will be investigated based on multi-instrument specialized field campaigns associated with warm season convective storms and winter precipitation systems. This research includes participation in two field projects (i.e., Wallops Area Cold season Project, WACP, and the International H2O Project, IHOP) by deploying mobile X-band polarimetric radar and a two-dimensional (2D) video disdrometer in coordination with the other research instruments brought into the field. The synergy of rainfall observations from multiple sensors available from the experiments will be the fundamental building block to support the proposed investigations on precipitation microphysics and rainfall estimation (and validation) associated with different radar systems (i.e., X-band vs. S-band and single vs. dual polarization measurements). Successful completion of the research may provide compelling evidence of the advantages of X-band polarimetric measurements against operational remote sensing systems for support of local flood forecasting. This new remote sensing tool, if proven reliable, would be an attractive and economically affordable solution to the problem of monitoring remote basins and urban areas that are poorly covered by the National radar network, and are prone to flash flooding.

0132942 Anagnostou我们的理解和能力，预测和应对水文环境的变化，不能适当地解决在缺乏可靠的降水信息。 拟议的研究旨在调查以下问题：目前运行的单极化雷达的定量限制和不确定性是什么（例如，WSR-88 D）在降雨估计中的应用，以及在不同的空间和时间尺度上，X波段极化测量相对于目前的S波段系统有哪些优点/缺点？ 这些问题将根据与暖季对流风暴和冬季降水系统有关的多仪器专业实地活动进行调查。 这项研究包括参与两个实地项目（即，Wallops地区冷季项目（WACP）和国际H2O项目（IHOP），通过部署移动的X波段偏振雷达和二维（2D）视频测距仪，与其他研究仪器协调进入该领域。 从实验中获得的多个传感器的降雨观测的协同作用将是支持与不同雷达系统（即，X波段与S波段以及单偏振与双偏振测量）。 研究的成功完成可能会提供令人信服的证据，证明X波段偏振测量相对于业务遥感系统在支持当地洪水预报方面的优势。 这种新的遥感工具，如果被证明是可靠的，将是一个有吸引力的和经济上负担得起的解决方案，监测偏远流域和城市地区的问题，是由国家雷达网络覆盖不足，容易发生山洪暴发。