Collaborative Research: Uncovering the Role of Land-Atmosphere Feedbacks on Flash Drought Intensification, Severity, and Expansion

合作研究：揭示陆地-大气反馈对突发干旱加剧、严重程度和扩大的作用

• 批准号: 2303458
• 负责人: Jason Otkin
• 金额: $ 26.29万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-15 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2303458&HistoricalAwards=false
• 关键词: Collaborative; Research; Uncovering; Role; Land; Collaborative; Research; Uncovering; Role; Land

Droughts can lead to massive economic, social, environmental, and agricultural impacts around the world. They occur across a wide range of total areas and duration. Flash droughts, which rapidly intensify over multi-week time periods, pose challenges for traditional drought monitoring and forecasting tools that are unable to capture rapid changes. Their rapid development has been linked to connections between the land and atmosphere that can make the land surface dry even faster, but these feedbacks and the conditions under which flash droughts occur are poorly understood. This project seeks to better understand the conditions in which land-atmosphere interactions contribute to rapid drought intensification and ways observations can be used to accurately describe these conditions. This project will develop a database that captures both slowly developing and flash drought events and will investigate metrics to assess coupling between the land and atmosphere to improve our understanding of flash drought development. The research tasks will increase our understanding of flash drought processes and characteristics, and their relationship to large-scale droughts, which will help answer whether flash droughts indeed present a separate class of drought. Through research conducted at James Madison University, an emerging research institution with primarily undergraduate students, this project will also train undergraduate students in environmental data science, including data analysis and visualization. The project will provide opportunities for capstone projects for students in the Integrated Science and Technology program to apply their systems analysis skills to the socially relevant topic of drought. Course materials will be developed to bring drought related materials into the university classroom.This project is jointly funded by the Climate and Large-Scale Dynamics Program and Division of Atmospheric and Geospace Sciences to support projects that increase research capabilities, capacity and infrastructure at a wide variety of institution types, as outlined in the GEO EMBRACE DCL.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.

干旱会导致全球巨大的经济，社会，环境和农业影响。它们发生在广泛的总面积和持续时间。在多周的时间段内迅速加剧的闪存干旱对无法捕获快速变化的传统干旱监测和预测工具构成了挑战。它们的迅速发展与土地和大气之间的联系有关，这可以使土地表面干燥得更快，但是这些反馈以及闪光干旱发生的状况知之甚少。该项目旨在更好地了解土地 - 大气相互作用有助于快速干旱加剧的条件，并可以使用观测来准确描述这些条件。该项目将开发一个数据库，该数据库既捕获慢慢发展和闪光干旱事件，并将调查指标，以评估土地和气氛之间的耦合，以提高我们对闪存干旱发展的理解。研究任务将提高我们对闪存干旱过程和特征的理解，以及它们与大规模干旱的关系，这将有助于回答闪存干旱是否确实呈现出单独的干旱类别。通过詹姆斯·麦迪逊大学（James Madison University）的研究，这是一家主要是本科生的新兴研究机构，该项目还将培训环境数据科学的本科生，包括数据分析和可视化。该项目将为综合科学和技术计划中的学生提供机遇项目，以将其系统分析技能应用于与社会相关的干旱主题。将开发课程材料以将与干旱相关的材料带入大学教室。该项目由气候和大规模动态计划以及大气和地理水平科学的划分共同资助，以支持增加研究能力，能力和基础架构的项目，这些机构在各种机构中使用了各种各样的机构，在Geo Embrace DCL中概述了dcl的奖励。智力优点和更广泛的影响审查标准。