The Potential Effect the Inflow Boundary Layer has on Hurricane Intensity

流入边界层对飓风强度的潜在影响

• 批准号: 9714410
• 负责人: Gary Barnes
• 金额: $ 14.42万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-15 至 2002-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9714410&HistoricalAwards=false
• 关键词: Potential; Effect; Inflow; Boundary; Layer

9714410Barnes The U.S. Weather Research Program (USWRP) is an interagency activity designed to perform and implement the research necessary to improve the delivery of weather services to the nation. Under this Program, the National Science Foundation, the National Oceanic and Atmospheric Administration (NOAA), the National Aeronautics and Space Administration (NASA) and the Office of Naval Research are jointly evaluating and supporting research of high priority to the USWRP. One of the primary goals of the USWRP is to perform the research necessary to improve track and intensity forecasts of hurricanes. It has been known for some time that sensible and latent heat fluxes from the sea surface are the energy source for hurricanes. Due to the difficulty, however, of obtaining data in the atmospheric boundary layer of a hurricane, data is scarce and the processes by which heat and moment fluxes occur are not well-known. Under this award and in cooperation with the National Oceanic and Atmospheric Administration, the Principal Investigator will conduct field experiments designed to collect data in the boundary layer of hurricanes. The experiments will concentrate on the inflow to the hurricane eyewall utilizing new high resolution dropwindsondes and sensors on a NOAA research aircraft that measure turbulent-scale fluxes. The experiments will provide an estimate of the depth and the energy content of the inflow that fuels the eyewall which is one factor that affects the intensity of the hurricane; they will also provide estimates of the sensible and latent heat fluxes in the inflow layer. Inflows with differing histories will be examined to determine how the inflow responds to passage over land, or warmer or cooler seas. Real time information can also be transmitted to the National Hurricane Forecast Center appraising them of the likelihood of a change in the intensity of hurricane prior to landfall. Successful completion of this research could lead to improved methods for predicting the intensity of hurricanes.***

9714410Barnes美国天气研究计划（USWRP）是一项跨部门活动，旨在执行和实施必要的研究，以改善向国家提供的天气服务。根据该计划，国家科学基金会、国家海洋和大气管理局（NOAA）、国家航空航天局（NASA）和海军研究办公室将联合评估和支持USWRP的高优先级研究。USWRP的主要目标之一是进行必要的研究，以改进飓风的轨迹和强度预报。一段时间以来，人们已经知道来自海面的感热通量和潜热通量是飓风的能量来源。然而，由于难以获得飓风大气边界层的数据，数据很少，热量和力矩通量发生的过程也不为人所知。根据该奖项，在与国家海洋和大气管理局的合作下，首席研究员将进行旨在收集飓风边界层数据的实地实验。实验将集中于飓风眼壁的流入，利用NOAA研究飞机上的新型高分辨率落风探空仪和传感器来测量湍流尺度的通量。这些实验将提供对流入流的深度和能量含量的估计，流入流为眼壁提供燃料，这是影响飓风强度的一个因素；它们还将提供入流层感热通量和潜热通量的估计。将研究具有不同历史的流入，以确定流入对陆地或温暖或凉爽的海洋的反应。实时信息也可以传送到国家飓风预报中心，在登陆前评估飓风强度变化的可能性。这项研究的成功完成可能会改进预测飓风强度的方法