Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD032137 |
Influence of Enhanced Planetary Wave Activity on the Polar Vortex Enhancement Related to Energetic Electron Precipitation | |
Asikainen, Timo1; Salminen, Antti1; Maliniemi, Ville2; Mursula, Kalevi1 | |
2020-05-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
![]() |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland; Norway |
英文摘要 | The Northern polar vortex experiences considerable interannual variability, which is also reflected to tropospheric weather. Recent research has established a link between polar vortex variations and energetic electron precipitation (EEP) from the near-Earth space into the polar atmosphere, which is mediated by EEP-induced chemical changes causing ozone loss in the mesosphere and stratosphere. The most dramatic changes in the polar vortex are due to sudden stratospheric warmings (SSWs). Enhanced planetary wave convergence and meridional circulation may cause an SSW, a temporary breakdown of the polar vortex. Here we study the relation of SSWs to the atmospheric response to EEP in 1957-2017 using combined ERA-40 and ERA-Interim reanalysis data and geomagnetic activity as a proxy of EEP. We find that the EEP-related enhancement of the polar vortex and other associated dynamical responses are seen only during winters when an SSW occurs and that the EEP-related changes are observed systematically slightly before the SSW onset. We show that during these times, the planetary wave activity into the stratosphere is systematically increased, thus favoring enhanced wave-mean-flow interaction, which can dynamically amplify the initial polar vortex enhancement caused by ozone loss. These results highlight the importance of considering planetary wave activity as a necessary condition for observing the effects of EEP on the polar vortex. |
英文关键词 | stratosphere energetic electron precipitation sudden stratospheric warming polar vortex |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000536605500013 |
WOS关键词 | QUASI-BIENNIAL OSCILLATION ; PARTICLE-PRECIPITATION ; GEOMAGNETIC-ACTIVITY ; OZONE ; STRATOSPHERE ; CIRCULATION ; TEMPERATURE ; VARIABILITY ; MODEL ; SOLAR |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/280208 |
专题 | 气候变化 |
作者单位 | 1.Univ Oulu, Space Phys & Astron Res Unit, Oulu, Finland; 2.Univ Bergen, Birkeland Ctr Space Sci, Dept Phys & Technol, Bergen, Norway |
推荐引用方式 GB/T 7714 | Asikainen, Timo,Salminen, Antti,Maliniemi, Ville,et al. Influence of Enhanced Planetary Wave Activity on the Polar Vortex Enhancement Related to Energetic Electron Precipitation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(9). |
APA | Asikainen, Timo,Salminen, Antti,Maliniemi, Ville,&Mursula, Kalevi.(2020).Influence of Enhanced Planetary Wave Activity on the Polar Vortex Enhancement Related to Energetic Electron Precipitation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(9). |
MLA | Asikainen, Timo,et al."Influence of Enhanced Planetary Wave Activity on the Polar Vortex Enhancement Related to Energetic Electron Precipitation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.9(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论