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DOI | 10.5194/acp-17-911-2017 |
Short-period mesospheric gravity waves and their sources at the South Pole | |
Mehta, Dhvanit1; Gerrard, Andrew J.1; Ebihara, Yusuke2; Weatherwax, Allan T.3; Lanzerotti, Louis J.1 | |
2017-01-20 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Japan |
英文摘要 | The sourcing locations and mechanisms for short-period, upward-propagating gravity waves at high polar latitudes remain largely unknown. Using all-sky imager data from the Amundsen-Scott South Pole Station, we determine the spatial and temporal characteristics of 94 observed small-scale waves in 3 austral winter months in 2003 and 2004. These data, together with background atmospheres from synoptic and/or climatological empirical models, are used to model gravity wave propagation from the polar mesosphere to each wave's source using a ray-tracing model. Our results provide a compelling case that a significant proportion of the observed waves are launched in several discrete layers in the tropopause and/or stratosphere. Analyses of synoptic geopotentials and temperatures indicate that wave formation is a result of baroclinic instability processes in the stratosphere and the interaction of planetary waves with the background wind fields in the tropopause. These results are significant for defining the influences of the polar vortex on the production of these small-scale, upward-propagating gravity waves at the highest polar latitudes. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394594500004 |
WOS关键词 | MIDDLE ATMOSPHERE ; BAROCLINIC INSTABILITY ; LIDAR OBSERVATIONS ; VORTEX ; JET ; STRATOSPHERE ; GENERATION ; MODEL ; PROPAGATION ; ANTARCTICA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/18355 |
专题 | 地球科学 |
作者单位 | 1.New Jersey Inst Technol, Ctr Solar Terr Res, 323 Martin Luther King Jr Blvd,101 Tiernan Hall, Newark, NJ 07102 USA; 2.Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Kyoto, Japan; 3.Merrimack Coll, 315 Turnpike St, N Andover, MA 01845 USA |
推荐引用方式 GB/T 7714 | Mehta, Dhvanit,Gerrard, Andrew J.,Ebihara, Yusuke,et al. Short-period mesospheric gravity waves and their sources at the South Pole[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(2). |
APA | Mehta, Dhvanit,Gerrard, Andrew J.,Ebihara, Yusuke,Weatherwax, Allan T.,&Lanzerotti, Louis J..(2017).Short-period mesospheric gravity waves and their sources at the South Pole.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(2). |
MLA | Mehta, Dhvanit,et al."Short-period mesospheric gravity waves and their sources at the South Pole".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.2(2017). |
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