Coordinated Analysis of Fully Polarimetric CSU-CHILL Radar Signatures with Surface and Airborne Hydrometeor Images

全偏振 CSU-CHILL 雷达特征与地面和机载水凝物图像的协调分析

• 批准号: 9730231
• 负责人: Viswanathan Bringi
• 金额: $ 33.62万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-15 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9730231&HistoricalAwards=false
• 关键词: Coordinated; Analysis; Fully; Polarimetric; CSU

AbstractATM-9730231Bringi, V. N.Colorado State UniversityTitle: Coordinated Analysis of Fully Polarmetric CSU-CHILL Radar Signatures with Surface and Airborne Hydrometeor ImagesCoordinated analysis of CSU-CHILL polarimetric radar data and insitu hydrometeor measurements from two instrumented chase vans, airborne imaging probe, and other auxiliary surface observations is proposed for evaluating and improving bulk-hydrometeor classification schemes and precipitation estimation algorithms. The T-28 aircraft equipped with the High Volume Particle Spectrometer (HVPS) obtained high quality hydrometeor images in three convective storms and one bright-band event during a deployment in June 1995. One chase van was instrumented with the 2D-video disdrometer obtained on lease from Joanneum Research, Graz, Austria. Numerous storm cell intercepts were made with this van providing high quality image data (front and side views, vertical speed) in intense rain mixed at times with hail. During the 1996/97 winter season, the disdrometer was located for one period at the CSU campus site, and for another period at the NCAR Marshall field site where a variety of winter precipitation was sampled in conjunction with other auxiliary measurements (snow gauge, formvar replication). A second chase van was equipped with a roof-mounted hail catcher net (of NCAR design) and a capacitance rain gauge. Numerous hail intercepts were made enabling the determination of time-resolved hail rates and size distributions. Recently developed optimal area algorithms which address the problem of comparing radar measurements aloft with surface instruments will be further refined and evaluated. This proposal seeks funding for a comprehensive analysis of these insitu hydrometeor data to advance polarimetric-based hydrometeor classification schemes and more fully evaluate polarimetric rainrate algorithms in mixed phase precipitation.

科罗拉多州立大学，ATM-9730231 Bringi，V.N.，题目：全极化CSU-CHILL雷达信号与地面和 机载水凝物图像CSU-CHILL偏振雷达数据和来自两辆装有仪器的追逐车、机载成像探测器和其他辅助地面观测的现场水凝物测量数据的协调分析，被提出用于评估和改进批量水凝物分类方案和降水估计算法。 装有高容量粒子分光仪的T-28飞机在1995年6月的一次部署中获得了三次对流风暴和一次亮波段事件的高质量水凝物图像。 一辆追逐货车装有从奥地利格拉兹的Joanneum Research租赁获得的2D视频测距仪。 这辆货车在大雨和冰雹中提供了高质量的图像数据（正面和侧面视图，垂直速度）。 在1996/97年冬季，disdrometer位于一个时期的CSU校园网站，另一个时期在NCAR马歇尔现场的各种冬季降水与其他辅助测量（雪规，formvar复制）结合进行采样。 第二辆追逐货车配备了一个安装在车顶上的冰雹捕捉网（NCAR设计）和一个电容式雨量计。许多冰雹拦截，使时间分辨冰雹率和大小分布的确定。 最近开发的最佳区域算法，解决了比较雷达测量与地面仪器的问题，将进一步完善和评价。 该提案寻求资金，对这些现场水文气象数据进行全面分析，以推进基于偏振的水文气象分类计划，并更充分地评估混合相降水中的偏振降雨率算法。