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DOI | 10.1029/2019JD030828 |
Middle- and High-Latitude Mesosphere and Lower Thermosphere Mean Winds and Tides in Response to Strong Polar-Night Jet Oscillations | |
Conte, J. Federico; Chau, Jorge L.; Peters, Dieter H. W. | |
2019-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:16页码:9262-9276 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | The dynamical behavior of the mesosphere and lower thermosphere (MLT) region during strongly disturbed wintertime conditions commonly known as polar-night jet oscillations (PJOs) is described in detail and compared to other wintertime conditions. For this purpose, wind measurements provided by two specular meteor radars located at Andenes (69 degrees N, 16 degrees E) and Juliusruh (54 degrees N, 13 degrees E) are used to estimate horizontal mean winds and tides as an observational basis. Winds and tidal main features are analyzed and compared for three different cases: major sudden stratospheric warming (SSW) with (a) strong PJO event, (b) non-PJO event, and (c) no major SSWs. We show that the distinction into strong PJOs, non-PJOs, and winters with no major SSWs is better suited to identify differences in the behavior of the mean winds and tides during the boreal winter. To assess the impact of the stratospheric disturbed conditions on the MLT region, we investigate the 30-year nudged simulation by the Extended Canadian Middle Atmosphere Model. Analysis of geopotential height disturbances suggests that changes in the location of the polar vortex at mesospheric heights are responsible for the jets observed in the MLT mean winds during strong PJOs, which in turn influence the evolution of semidiurnal tides by increasing or decreasing their amplitudes depending on the tidal component. |
英文关键词 | MLT solar tides meteor radar Ext-CMAM30 polar vortex PJO |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490762800021 |
WOS关键词 | STRATOSPHERIC SUDDEN WARMINGS ; DOWNWARD PROPAGATION ; ARCTIC OSCILLATION ; SEMIDIURNAL SOLAR ; TECHNICAL NOTE ; LUNAR TIDES ; CLIMATOLOGY ; ATMOSPHERE ; VARIABILITY ; METEOR |
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/186157 |
专题 | 气候变化 |
作者单位 | Univ Rostock, Leibniz Inst Atmospher Phys, Kuhlungsborn, Germany |
推荐引用方式 GB/T 7714 | Conte, J. Federico,Chau, Jorge L.,Peters, Dieter H. W.. Middle- and High-Latitude Mesosphere and Lower Thermosphere Mean Winds and Tides in Response to Strong Polar-Night Jet Oscillations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(16):9262-9276. |
APA | Conte, J. Federico,Chau, Jorge L.,&Peters, Dieter H. W..(2019).Middle- and High-Latitude Mesosphere and Lower Thermosphere Mean Winds and Tides in Response to Strong Polar-Night Jet Oscillations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(16),9262-9276. |
MLA | Conte, J. Federico,et al."Middle- and High-Latitude Mesosphere and Lower Thermosphere Mean Winds and Tides in Response to Strong Polar-Night Jet Oscillations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.16(2019):9262-9276. |
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