CAREER: The Atmospheric Energy Variability of Tropical-Extratropical Interactions Associated with the Madden–Julian Oscillation and Equatorial Waves

职业：与马登朱利安涛动和赤道波相关的热带-温带相互作用的大气能量变化

• 批准号: 2045542
• 负责人: Naoko Sakaeda
• 金额: $ 65.2万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-07-01 至 2026-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2045542&HistoricalAwards=false
• 关键词: CAREER; Atmospheric; Energy; Variability; Tropical

Organized tropical convection can produce modes of variability on the intraseasonal timescale. Two prominent tropical modes are the Madden-Julian Oscillation (MJO) and the convectively coupled equatorial waves (CCEWs). They can generate disturbances that influence the extratropical atmosphere (i.e., the mid-latitude storm track and extreme weather events). Conversely, midlatitude atmospheric disturbances can propagate into the tropics to influence the MJO and CCEWs. This project aims to improve our understanding of the tropical-extratropical interactions associated with the MJO and CCEWs. Emerging results have the potential to improve subseasonal-to-seasonal prediction, enhance the nation’s capability for weather forecasting, and advance our understanding of climate change. The project activities include the training of underrepresented students in research and broadening interests in atmospheric science among K-12 students in Oklahoma. These activities will inspire the next generation of diverse scientists.The underlying mechanisms of the tropical-extratropical interactions associated with the MJO and CCEWs are still unclear. The main research goal is to understand the physical processes underlying these interactions from the energetics perspectives. The project intends to reveal (1) the atmospheric energy variability associated with tropical-extratropical interactions, (2) the role of energy exchanges among weather-to-climate timescales, and (3) how much of the tropical and extratropical kinematic and thermodynamic variabilities are sustained by their interactions. The investigator will analyze reanalysis and satellite data using various diagnostic techniques to understand the mechanisms that maintain global energy anomalies associated with the MJO and CCEWs. The project will integrate a K-12 summer in-person course that blends art and science to educate about the global atmospheric circulation including tropical-extratropical interactions. The developed educational activity modules will be shared online and through K-12 teacher training workshops. These research and educational activities serve as the foundation of the investigator’s career-long vision to advance and broadly disseminate the knowledge of tropical-extratropical interactions.This project is jointly funded by the division of Atmosphere and Geospace Science (AGS) under the Climate and Large-Scale Dynamics (CLD) program 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.

有组织的热带结构可以在季节内时间尺度上产生可变性模式。两个突出的热带模式是Madden-Julian振荡（MJO）和对流耦合的等边波（CCEW）。他们可以产生影响再次内部气氛的灾难（即中纬度风暴轨迹和极端天气事件）。相反，中纬度大气灾害可以传播到热带地区，以影响MJO和CCEW。该项目旨在提高我们对与MJO和CCEW相关的热带界面相互作用的理解。新兴的结果有可能改善季节至季节的预测，增强国家的天气预报能力，并提高我们对气候变化的理解。项目活动包括培训俄克拉荷马州K-12学生大气科学的研究和扩大大气科学的兴趣的培训。这些活动将激发下一代不同的科学家。与MJO和CCEW相关的热带 - 肠道相互作用的基本机制尚不清楚。主要的研究目标是从能量角度了解这些相互作用的物理过程。该项目打算揭示（1）与热带 - 热带相互作用相关的大气能量变异性，（2）天气到气候时间标准之间能量交流的作用，以及（3）通过其相互作用来维持多少热带和热带运动学和热动力学的变化。研究人员将使用各种诊断技术分析重新分析和卫星数据，以了解维持与MJO和CCEW相关的全球能量异常的机制。该项目将整合K-12夏季面对面的课程，该课程将艺术与科学融合在一起，以教育包括热带 - 界面相互作用的全球大气循环。开发的教育活动模块将在线共享，并通过K-12教师培训讲习班共享。这些研究和教育活动是研究者职业生涯长期愿景的基础，以促进和广泛传播热带 - 界面相互作用的知识。该项目由气候和地理位置科学（AGS）共同资助，该项目在气候和大规模的计划（CLD）计划（CLD）计划（CLD）计划（CLD）计划（CLD）计划（CLD）的启发性研究（EPSCSSCSESTER）（EPSCSERENTER STATER STATER SERSE STER STARES COTUT SESF）。使用基金会的智力优点和更广泛的影响审查标准通过评估来支持。