Middle atmosphere (15-100 km) coupling processes: radar observations and collaborations using networks, CANDAC-PEARL laboratory, satellites, and general circulation models

中层大气（15-100 km）耦合过程：使用网络、CANDAC-PEARL 实验室、卫星和大气环流模型进行雷达观测和协作

• 批准号: 5380-2008
• 负责人: Manson, Alan
• 金额: $ 3.58万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=420055
• 关键词: Middle; atmosphere; 15; 100; km

Our focus is on dominant atmospheric phenomena that require extreme combinations of solar radiation, chemistry and especially dynamics: winds and waves. Objectives include understanding "stratospheric sudden winter warmings", when Canadian latitudes above tropopause heights (~15km) are dominated by winds typical of summer months, and chemical distributions are significantly changed; the cold summer middle atmosphere above 60km, at mid-high latitudes, when despite continuous solar heating the atmosphere is so cold that noctilucent clouds form; major oscillations eg. Quasi-Biennial and Arctic, which produce regional changes in weather, but also global changes throughout the atmosphere (up to 100km); and variations in the winter/spring polar vortex (15-100km), which modify the global distributions and 'holes' of ozone. All latitudes including the tropics must be studied due to global coupling. Our approach is to study the waves that are dominant in the above phenomena: tides (driven by solar heating of water vapor and ozone), planetary waves and gravity waves (related to and sourced in weather systems). Observationally we use Medium Frequency Radars to measure the winds (60-100km), including our UofS systems (Institute of Space and Atmospheric Studies) at Saskatoon 52N, Eureka 80N, Tromso 70N (Norway), & Platteville 40N (Colorado); global networks of radars and optical devices operated by international colleagues, with whom I establish collaborations; data from Canadian and International 'satellite systems'; and collaborations using major global atmospheric models.

我们的重点是主要的大气现象，需要太阳辐射，化学，特别是动力学的极端组合：风和波浪。目标包括了解“平流层冬季突然变暖”，当加拿大纬度以上对流层顶高度（~ 15公里）的风占主导地位的典型的夏季月份，化学分布显着改变;寒冷的夏季中大气层以上60公里，在中高纬度，当尽管持续的太阳能加热的大气是如此寒冷，冬冷云的形式;主要的振荡，如。准两年一次的极涡和北极的极涡，这不仅造成区域性天气变化，而且也造成整个大气层的全球性变化（最远达100公里）;冬/春极涡的变化（15- 100公里），这改变了臭氧的全球分布和“空洞”。由于全球耦合，必须研究包括热带在内的所有纬度。我们的方法是研究在上述现象中占主导地位的波：潮汐（由太阳加热水蒸气和臭氧驱动）、行星波和重力波（与天气系统相关并源于天气系统）。在观测上，我们使用中频雷达来测量风（60- 100公里），包括我们的UofS系统（空间和大气研究所），位于萨斯卡通52 N、尤里卡80 N、特罗姆瑟70 N（挪威）和普拉特维尔40 N（科罗拉多）;由国际同事运营的雷达和光学设备全球网络，我与他们建立了合作关系;来自加拿大和国际“卫星系统”的数据;以及使用主要全球大气模型的合作。