RAPID: Study of Landfalling Tropical Cyclones

这项研究是为了收集数据，质量控制，存档和初步分析飓风哈维和伊尔玛期间收集的数据。 飓风哈维是自2005年以来第一个登陆美国的大型飓风，也是现代天气雷达时代为数不多的四级飓风之一。 研究人员计划利用这些飓风前所未有的观测结果来解决与飓风动力学如何影响登陆期间的风和降雨有关的问题。 该研究通过向预报员、应急管理人员和工程师提供数据，与改善公共安全直接相关。 这项拨款是对NSF关于飓风哈维研究的亲爱同事信（NSF 17-128）的回应。 研究团队将开始对哈维飓风数据进行质量控制、存档和初步分析，并在飓风厄玛登陆时部署双极化SMART-R雷达和其他地面仪器。 Harvey和Irma的研究重点将是涡旋Rossby波（VRW）和螺旋雨带的作用。 研究小组将讨论四个主题：1）收集观测数据，以解决飓风登陆期间边界层和高空环流之间的耦合，2）确定登陆期间涡旋Rossby波驱动雨带对降雨的贡献，3）提供额外的观察，以检查向内传播的不对称性对中-和味-的发展和演变的作用。在登陆飓风的眼墙内区域的尺度涡; 4）收集记录外部雨带环境所需的观测数据，以改善登陆热带气旋内龙卷风的预报。

This research is for data collection, quality control, archive and preliminary analysis of data collected during Hurricanes Harvey and Irma. Hurricane Harvey was the first major hurricane landfall in the United States since 2005 and is one of the very few Category 4 hurricane landfalls in the modern weather radar era. The researchers plan to use the unprecedented observations from these hurricanes to address questions related to how hurricane dynamics impact wind and rainfall during landfall. The research has direct relevance to improving public safety by providing data to forecasters, emergency managers and engineers. The grant is in response to the NSF Dear Colleague Letter on Hurricane Harvey research (NSF 17-128). The research team will begin quality control, archiving and initial analysis of Hurricane Harvey data and to deploy the dual-polarimetric SMART-R radar and additional surface instrumentation to the landfall of Hurricane Irma. The focus of the research from Harvey and Irma will be on the role of Vortex Rossby Waves (VRWs) and spiral rainbands. The research team will address four topics: 1) Collect observations to address the coupling between the boundary layer and circulations aloft during hurricane landfall, 2) Determine the contribution of vortex Rossby wave-driven rain bands to rainfall during landfall, 3) Provide additional observations to examine the role of inward propagating asymmetries on the development and evolution of meso- and miso-scale vortices in the inner eyewall region of landfalling hurricanes, and 4) Collect observations needed to document the environment of outer rainbands to improve forecasts of tornadic storms within landfalling tropical cyclones.