Dynamics of Orographic Rain Associated with Landfalling Hurricanes over the Central and Southern Appalachian Mountains

与阿巴拉契亚山脉中部和南部登陆飓风相关的地形降雨动态

• 批准号: 1265783
• 负责人: Yuh-Lang Lin
• 金额: $ 39.95万
• 依托单位: North Carolina Agricultural & Technical State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-04-15 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1265783&HistoricalAwards=false
• 关键词: Dynamics; Orographic; Rain; Associated; Landfalling

The objectives of the research are to: 1) improve the understanding of dynamics of orographic and environmental influences on tropical cyclone (TC) track deflection over the Appalachians and other mesoscale mountain ranges; 2) determine major control parameters and moist flow regimes for orographic precipitation associated with TCs over mesoscale mountains; and 3) understand the interaction of microphysical and dynamical processes in enhancing precipitation associated with TCs over mesoscale mountains. To accomplish the above objectives, both idealized and real-case numerical simulations using the research version of Weather Research and Forecast model (WRF version 3) developed at National Center for Atmospheric Research (NCAR) will be performed.Intellectual Merit: The research will improve the fundamental understanding of the dynamics of orographic influences on TC track deflection over the Appalachians and other mesoscale mountain ranges, which, in turn, will improve the prediction of rainfall distribution. The studies of major control parameters, moist flow regimes, and interaction of microphysical and dynamical processes associated with TCs over mesoscale mountains will help improve the microphysics and planetary boundary-layer parameterization schemes, which, in turn, will help improve quantitative precipitation forecasts over the Appalachians as well as other mountains that share similar environments. All these research efforts are consistent with one of the major initiatives of the U.S. Weather Research Program.Broader Impacts: A fundamental understanding of heavy orographic precipitation associated with the passage of tropical cyclones should lead to improvements in the quantitative forecasts of precipitation and hydrological prediction of flooding and, thus, advance the protection of life and property in areas near mountains. The project will educate and train two graduate students and two undergraduate students at North Carolina A&T State University. Most of the students in the university come from underrepresented populations and the Co-PI is a female scientist. The students and faculty worked on the project will contribute information to local high-school teachers and students through various science programs. The research results derived from the project will be used to develop a new graduate course that fills the gap between mountain meteorology and hurricane dynamics. Offering of the course through UCAR's COMET virtual education program will be attempted to allow a large number of students and scientists to be impacted by it. Existing University-Government and international collaborations will be strengthened as students supported by the project will have opportunities to interact with atmospheric scientists in NCAR, NOAA, Taiwan, and Madagascar.

该研究的目标是：1）提高对阿巴拉契亚群岛和其他中尺度山脉的热带旋风（TC）轨道偏转的地形和环境影响动态的理解； 2）确定与中尺度上与TC相关的地形降水的主要控制参数和潮湿的流程度； 3）了解微物理和动态过程在增强与中尺度山脉TC相关的降水方面的相互作用。 To accomplish the above objectives, both idealized and real-case numerical simulations using the research version of Weather Research and Forecast model (WRF version 3) developed at National Center for Atmospheric Research (NCAR) will be performed.Intellectual Merit: The research will improve the fundamental understanding of the dynamics of orographic influences on TC track deflection over the Appalachians and other mesoscale mountain ranges, which, in turn, will improve the prediction of rainfall 分配。 对主要控制参数，潮湿流动状态以及与中尺度山脉TC相关的微物理和动力学过程相互作用的研究将有助于改善微观物理学和行星边界层层参数化方案，反过来，这将有助于改善Appalachians以及其他具有类似环境的量化定量降水预测。 所有这些研究工作都与美国天气研究计划的主要举措之一一致。BROADER的影响：对与热带气旋通过的大规模降水有关的基本了解应导致对洪水的降水和水文预测的定量预测，从而改善洪水和山区附近地区的生命和财产的保护。该项目将在北卡罗来纳州A＆T州立大学教育和培训两名研究生和两名本科生。 大学中的大多数学生都来自代表性不足的人群，Co-Pi是一位女科学家。该项目的学生和教职员工将通过各种科学课程向当地高中老师和学生提供信息。该项目得出的研究结果将用于开发新的研究生课程，以填补山区气象和飓风动态之间的空白。 通过UCAR的彗星虚拟教育计划提供课程，将尝试允许大量学生和科学家受到其影响。随着该项目的支持，将有机会与NCAR，NOAA，台湾和马达加斯加的大气科学家进行互动，将加强现有的大学政府和国际合作。