Wave dynamics of the mesosphere

中间层的波动动力学

• 批准号: NE/H009760/1
• 负责人: Nicholas John Mitchell
• 金额: $ 47.95万
• 依托单位: University of Bath
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FH009760%2F1
• 关键词: Wave; dynamics; mesosphere

Waves in the atmosphere are able to transport energy and momentum between different layers of the atmosphere. Understanding these waves is thus very important if we want to understand the atmosphere as a whole system in which the layers are coupled together. In this project we will use five radars to measure waves in the mesosphere, which is that part of the atmosphere at heights of between about 55 to 100 km. The radars are located at sites ranging from the Arctic to the Antarctic. We are particularly interested in detecting and measuring waves generated when strong winds blow over the Southern Andes and the Antarctic Peninsula - so-called 'mountain waves'. We are interested in understanding the conditions under which these waves can ascend to the mesosphere and plan to determine the effect they have on the large-scale winds of the mesosphere. We will also study how the intense, cold winter circulation system known as the stratospheric polar vortex filters and controls waves ascending into the mesosphere. We plan to take part in a major international experiment, SAANGRIA, to study these phenomena in collaboration with other instruments. Finally, we will study how the winds of the equatorial mesosphere control the cross-equator propagation of planetary-scale waves

大气中的波能够在大气层的不同层之间传输能量和动量。因此，如果我们想要了解大气作为一个完整的系统，其中各层耦合在一起，了解这些波是非常重要的。在这个项目中，我们将使用五个雷达来测量中间层中的波，中间层是大气中高度在55到100公里之间的那部分。雷达位于从北极到南极的各个地点。我们特别感兴趣的是探测和测量当强风吹过南安第斯山脉和南极半岛时产生的波浪--所谓的‘山波’。我们有兴趣了解这些波可以上升到中间层的条件，并计划确定它们对中间层大尺度风的影响。我们还将研究被称为平流层极涡的紧张、寒冷的冬季环流系统如何过滤和控制上升到中间层的波。我们计划参加一个名为SAANGRIA的重大国际实验，与其他仪器合作研究这些现象。最后，我们将研究赤道中间层风如何控制行星尺度波的跨赤道传播。

项目成果

Mean winds, temperatures and the 16- and 5-day planetary waves in the mesosphere and lower thermosphere over Bear Lake Observatory (42° N, 111° W)

• DOI: 10.5194/acp-12-1571-2012
• 发表时间: 2011-11
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: K. Day;M. Taylor;N. Mitchell

Assessment of gravity wave momentum flux measurement capabilities by meteor radars having different transmitter power and antenna configurations

• DOI: 10.1029/2011jd017174
• 发表时间: 2012-05
• 期刊: Journal of Geophysical Research
• 作者: D. Fritts;D. Janches;W. Hocking;N. Mitchell;M. Taylor

Quantifying gravity wave momentum fluxes with Mesosphere Temperature Mappers and correlative instrumentation

使用中层温度测绘仪和相关仪器量化重力波动量通量

• DOI: 10.1002/2014jd022150
• 发表时间: 2014
• 期刊: Atmospheres
• 作者: Fritts D

Interannual variability of mesopause zonal winds over Ascension Island: Coupling to the stratospheric QBO

阿森松岛中层顶纬向风的年际变化：与平流层 QBO 的耦合

• DOI: 10.1002/2013jd020203
• 发表时间: 2013
• 期刊: Atmospheres
• 作者: De Wit R

The climatology, propagation and excitation of ultra-fast Kelvin waves as observed by meteor radar, Aura MLS, TRMM and in the Kyushu-GCM

流星雷达、Aura MLS、TRMM 和九州 GCM 观测到的超快开尔文波的气候学、传播和激发

• DOI: 10.5194/acp-12-1865-2012
• 发表时间: 2012
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: Davis R