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Evaluation of the rainfall nowcasting system for a dense radar network over dallas-fort worth (DFW)

机译：达拉斯-沃思（DFW）上密集雷达网络的降雨临近预报系统的评估

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Urban flash floods can occur immediately after heavy rainfall due to urban characteristics including impervious surface and complex drainage systems. Early warnings of such events, even by 5-10 min, are crucial in terms of protecting personal and property safety. Since 2012, the center for Collaborative Adaptive Sensing of Atmosphere (CASA), in collaboration with the National Weather Service (NWS) and North Central Texas Council of Governments (NCTCOG), has initiated the effort to deploy a dense radar network in Dallas-Fort Worth (DFW) for urban weather disaster detection and mitigation [1, 2]. The DFW Metroplex is one of the largest inland metropolitan areas in the U.S., and is also among the fastest growing major urban areas in the country. Every year the DFW area experiences a wide range of natural hazardous weather events including high wind, flash flood, tornado, and hail, etc. [2]. It is an ideal location to demonstrate the application of dense radar network for urban weather sensing and disaster management. As shown in Figure 1, centered in the DFW urban remote sensing network is the deployment of a NWS S-band radar system and eight dual-polarization X-band radars that can provide coverage to most of the 6.5 million people in this region. Based primarily on these radars, a number of product systems have been developed for real time warning operations, including the real-time multiple Doppler wind retrieval system [3], quantitative precipitation estimation (QPE) [4, 5, 6] and nowcast system.
机译：由于城市特征（包括不透水的地面和复杂的排水系统），在暴雨过后，可能会立即发生城市山洪。就保护人身和财产安全而言，即使在5-10分钟之内，此类事件的预警也至关重要。自2012年以来，大气协同自适应感测中心（CASA）与美国国家气象局（NWS）和北中德克萨斯州政府理事会（NCTCOG）合作，启动了在达拉斯堡部署密集雷达网络的工作价值（DFW）用于城市天气灾害的检测和缓解[1，2]。 DFW大都会区是美国最大的内陆大都市区之一，也是美国增长最快的主要城市地区之一。每年，DFW地区都会经历各种自然灾害天气事件，包括强风，山洪，龙卷风和冰雹等[2]。这是演示密集雷达网络在城市天气传感和灾害管理中的应用的理想场所。如图1所示，以DFW城市遥感网络为中心的是，部署了NWS S波段雷达系统和八个双极化X波段雷达，可以覆盖该地区650万人中的大多数。主要基于这些雷达，已经开发出了用于实时预警操作的许多产品系统，包括实时多普勒测风系统[3]，定量降水估算（QPE）[4、5、6]和临近预报系统。

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