Austral Mid-Latitude Atmospheric Dynamics

南方中纬度大气动力学

• 批准号: 0639718
• 负责人: Gonzalo Hernandez
• 金额: $ 62.77万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0639718&HistoricalAwards=false
• 关键词: Austral; Mid; Latitude; Atmospheric; Dynamics

The centerpiece of this project is the continuation of year-round operations and calibration of a high resolution Fabry-Perot spectrometer at the University of Canterbury's Mount John Astronomical Observatory, NZ (44 deg S) that the PI has been conducting for the last 14 years. These observations will lay the foundation for the derivation of a statistically meaningful long-term mesospheric and lower thermospheric climatology including both winds and temperatures for the Mid-latitude Southern hemisphere atmosphere. Comparison between Mount John (southern hemisphere) and Fritz Peak (northern hemisphere) wind and temperature climatologies will be used to investigate inter-hemispherical differences in atmospheric dynamical behavior. Additional objectives that will be explored as part of this project include: comparison between simultaneous common volume observations of winds with the optical technique and both meteor and MF radar techniques at and near Mount John; combining radar and optical techniques to determine and characterize airglow altitude dependencies; and comparison with planned optical imager investigations at Mount John to investigate short-periodicity wind and temperature oscillations that have recently been discovered in the observations. The planned activities will be conducted as part of an established U.S.-New Zealand international cooperative project. In addition, through international cooperation and collaboration under the aegis of the Antarctic Aeronomy Consortium the observations in New Zealand (Mount John, Birdlings Flat) will be combined with observations in Australia (Adelaide, Beveridge), Argentina (El Leoncito, Buenos Aires) and Antarctica (Scott Base, Arrival Heights, Mawson, Davis, South Pole) to extend the climatological studies of planetary-scale and tidal wave activity to cover large fractions of both the midlatitude and high-latitude Southern Hemisphere. Collaboration with a theoretical modeling scientist to further interpret and investigate the implications of the observational findings has also been established. Graduate and undergraduate students will participate both in the observational and data analysis parts of the planned research program. Knowledge of atmospheric behavior at Southern Hemisphere latitudes is an important ingredient in fully understanding Global Climate Change and its human implications.

该项目的核心是继续在坎特伯雷大学约翰山天文台全年运行和校准高分辨率法布里-佩罗光谱仪，新西兰（南经44度），PI已经进行了14年。这些观测将为推导具有统计意义的长期中间层和低层热层气候学奠定基础，包括南半球中纬度大气的风和温度。比较约翰山（南半球）和弗里茨峰（北半球）的风和温度气候学将用于研究半球间大气动力行为的差异。作为该项目的一部分，将探索的其他目标包括：比较在约翰山及其附近使用光学技术和流星和中频雷达技术同时进行的风的共同体积观测；结合雷达和光学技术来确定和表征气辉高度依赖性；并与计划在约翰山进行的光学成像仪调查进行比较，以调查最近在观测中发现的短周期风和温度振荡。计划中的活动将作为美国-新西兰国际合作项目的一部分进行。此外，在南极航空联合会的支持下，通过国际合作和协作，在新西兰（约翰山，鸟坪）的观测将与在澳大利亚（阿德莱德，贝弗里奇），阿根廷（埃尔莱昂西托，布宜诺斯艾利斯）和南极洲(斯科特基地，到达高地，莫森，戴维斯，将行星尺度和潮汐波活动的气候学研究扩展到南半球中纬度和高纬度的大部分地区。与理论建模科学家合作，进一步解释和调查观测结果的含义也已建立。研究生和本科生将参与计划研究项目的观察和数据分析部分。了解南半球纬度的大气行为是充分了解全球气候变化及其对人类影响的一个重要因素。