CAREER: A Comprehensive Assessment of Over-Ocean Tropical Cyclone Weakening

职业：对海洋热带气旋减弱的综合评估

• 批准号: 2237545
• 负责人: Kimberly Wood
• 金额: $ 52.97万
• 依托单位: Mississippi State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-15 至 2023-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2237545&HistoricalAwards=false
• 关键词: CAREER; Comprehensive; Assessment; Over; Ocean

The expanding population along U.S. coastlines who are at risk from hurricanes makes it essential to accurately predict the future behavior of these storms with sufficient lead time to enact appropriate, cost-effective actions that protect life and property. Much work has investigated hurricane intensification, but comparatively little effort has been invested in studying hurricanes that weaken while still over the ocean despite public perception of expected impacts being tied to hurricane category, such as Hurricane Florence in 2018. This project will explore the nature of hurricanes that weaken away from land, as well as characteristics of the near-storm environment, to quantify how over-ocean weakening varies across all tropical basins. The research will then investigate hurricanes that weaken on approach to land in order to evaluate how nearby land modifies these weakening pathways and facilitate advances in forecasting such events. Open-source programming tools developed by this project will be shared to ensure scientific transparency and expand accessibility to more users.Vertical wind shear can weaken a tropical cyclone, yet a range of shear magnitudes is associated with tropical cyclone weakening. Enhanced atmospheric moisture supports deep convection, but the location of this enhanced moisture relative to the storm center appears to affect the storm’s intensity. To interrogate the physical processes responsible for tropical cyclone weakening in these varied environments, this study will assess the spatial distribution of near-storm environmental characteristics and the relative timing of changes in those characteristics within a storm-relative framework for over-ocean weakening events in all tropical basins. The latest global reanalysis will be investigated for environmental fields, and spatial assessment of convection and its evolution over time—revealed by geostationary infrared imagery—will highlight the tropical cyclone’s response to its environment. Beyond advancing fundamental understanding of these storms, this project will craft a tropical cyclone analysis toolkit comprised of open-source Python tools to accelerate time-to-science for the broader research community. Toolkit examples will be developed and tested in the classroom to support teaching of tropical cyclone dynamics and programming practices, leading to modules that can be incorporated into existing curricula across institutions.This project is jointly funded by NSF Physical and Dynamic Meteorological program (PDM), and the Established Program to Stimulate Competitive Research (EPSCoR).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

处于危险中的美国海岸线的扩大使高管以足够的方式存放MS至关重要，导致采取适当的，具有成本效益的行动来保护生命和财产，但比较的飓风虽然是公众，但仍有很少的飓风被私人与飓风类别相关，例如佛罗伦萨在2018年。该项目探索了飓风飓风的性质，以及近态环境的特征，以量化过度偏弱的弱化量如何变化。然后，该研究将调查飓风削弱着陆的方法，以评估附近的土地如何修改这些弱化的途径，并促进预测此类事件的进步。风暴中心在这些多样化的环境中造成了风暴中心。随着时间的流逝，将对环境领域的最新肾分析进行调查（由地理红外图像进行重新研究），以推进这些Stolms CE的基本牵引力，为您提供更广泛的研究社区。动态实践。 SF Sfly Mission，并通过Toundation的智力优点和更广泛的影响评估标准来评估您的支持。