RUI: Stratospheric Warming and Its Relationship to Surface Climate

RUI：平流层变暖及其与地表气候的关系

• 批准号: 0213248
• 负责人: Varavut Limpasuvan
• 金额: $ 17.98万
• 依托单位: Coastal Carolina University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0213248&HistoricalAwards=false
• 关键词: RUI; Stratospheric; Warming; Its; Relationship

The Research in Undergraduate Institutions (RUI) project will investigate interaction of the stratosphere and troposphere in context of the stratospheric sudden warming phenomenon. Interest in the stratospheric circulation, including sudden warming, has recently been rekindled by observational analysis that suggests that a primary mode of tropospheric variability in polar latitudes - the Northern Hemisphere Annular Mode - is influenced by the downward migration of annular anomalies from the stratosphere. Variations in stratospheric polar vortex have been linked to seasonal anomalies in the tropospheric zonal-mean zonal winds and circulation patterns such as the Arctic Oscillation/North Atlantic Oscillation. These patterns have profound impact on European and North American climate and weather. Dr. Limpasuvan will conduct a dynamically oriented objective analysis of the mechanisms coupling the troposphere and stratosphere, including wave propagation. Diagnosis of heat and momentum fluxes associated with sudden warming will also be undertaken. The project will advance the understanding of mechanisms responsible for stratosphere's influence on surface weather and climate. The project will involve undergraduate students at Coastal Carolina University in an effort to integrate research into the school's science education, and strengthen the institution's new Applied Physics program. It will provide valuable and unique research experience to undergraduates in South Carolina and the greater southeastern region.

本科院校研究项目将调查平流层和对流层在平流层突然变暖现象背景下的相互作用。 观测分析表明，极纬地区对流层变化的一个主要模式----北方半球环形模式----受到平流层环形异常向下迁移的影响，这一分析最近重新激起了人们对平流层环流，包括突然变暖的兴趣。 平流层极涡的变化与对流层纬向平均纬向风和北极涛动/北大西洋涛动等环流模式的季节性异常有关。 这些模式对欧洲和北美的气候和天气有着深远的影响。 Limpasuvan博士将对对流层和平流层的耦合机制，包括波的传播，进行动态定向的客观分析。 还将对与突然变暖有关的热量和动量通量进行诊断。 该项目将促进对平流层影响地面天气和气候的机制的了解。 该项目将涉及沿海卡罗莱纳大学的本科生，努力将研究融入学校的科学教育，并加强该机构的新应用物理学计划。 它将为南卡罗来纳州和大东南地区的本科生提供宝贵而独特的研究经验。