The Dynamics of Jets and Waves in the Atmosphere and Southern Ocean

大气和南大洋中的急流和波浪的动力学

• 批准号: 1455577
• 负责人: Sukyoung Lee
• 金额: $ 50万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2019-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1455577&HistoricalAwards=false
• 关键词: Dynamics; Jets; Waves; Atmosphere; Southern

The results of this project will help to reduce the uncertainties in long-term climate prediction of the global-scale surface temperature and circulation patterns. Two high school teachers with backgrounds in advanced earth science and computer science, and two high school students will engage with the team to use and analyze climate science data sets. The scientific objectives of this project are to advance knowledge of (1) how mid latitude waves and jets are linked to tropical and high-latitude processes, and (2) how the atmospheric jet variability influences Antarctic Circumpolar Current (ACC), jets, eddies, and jet-scale overturning circulations. For the first objective, the investigation will be focused on how poleward heat transport by atmospheric waves is influenced by tropical heating and the background state of the atmosphere. The improved knowledge of the underlying physical processes can enhance understanding of the general circulation of both the atmosphere and the Southern Ocean. In addition, this knowledge can help us to evaluate how high-latitude surface temperatures and the Southern Ocean circulation, two of the most sensitive aspects of climate variability, respond to external forcings.

该项目的结果将有助于减少全球尺度地表温度和环流模式长期气候预测的不确定性。两名具有高级地球科学和计算机科学背景的高中教师以及两名高中生将与该团队合作，使用和分析气候科学数据集。该项目的科学目标是促进以下方面的知识：(1)中纬度波和急流如何与热带和高纬度过程联系在一起；(2)大气急流的变化如何影响南极环极流（ACC）、急流、涡流和急流尺度的翻转环流。对于第一个目标，调查将侧重于热带加热和大气背景状态如何影响大气波向极地的热输送。对潜在物理过程的认识的提高，可以加强对大气和南大洋环流的了解。此外，这些知识可以帮助我们评估高纬度地表温度和南大洋环流（气候变率的两个最敏感的方面）如何对外部强迫作出反应。