Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-19-0269.1 |
Are Sudden Stratospheric Warmings Preceded by Anomalous Tropospheric Wave Activity? | |
De La Camara, Alvaro1,2,3; Birner, Thomas4; Albers, John R.5,6 | |
2019-11-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:21页码:7173-7189 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Germany; USA |
英文摘要 | A combination of 240 years of output from a state-of-the-art chemistry-climate model and a twentieth-century reanalysis product is used to investigate to what extent sudden stratospheric warmings are preceded by anomalous tropospheric wave activity. To this end we study the fate of lower tropospheric wave events (LTWEs) and their interaction with the stratospheric mean flow. These LTWEs are contrasted with sudden stratospheric deceleration events (SSDs), which are similar to sudden stratospheric warmings but place more emphasis on the explosive dynamical nature of such events. Reanalysis and model output provide very similar statistics: Around one-third of the identified SSDs are preceded by wave events in the lower troposphere, while two-thirds of the SSDs are not preceded by a tropospheric wave event. In addition, only 20% of all anomalous tropospheric wave events are followed by an SSD in the stratosphere. This constitutes statistically robust evidence that the anomalous amplification of wave activity in the stratosphere that drives SSDs is not necessarily due to an anomalous amplification of the waves in the source region (i.e., the lower troposphere). The results suggest that the dynamics in the lowermost stratosphere and the vortex geometry are essential, and should be carefully analyzed in the search for precursors of SSDs. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496227000002 |
WOS关键词 | ROSSBY WAVES ; VORTEX ; VACILLATIONS ; WEATHER ; MODEL ; PROPAGATION ; VARIABILITY ; CIRCULATION ; PLANETARY ; BLOCKING |
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/225620 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Complutense Madrid, Dept Earth Phys & Astrophys, Madrid, Spain; 2.CSIC, Inst Geosci, Ctr Mixto, Madrid, Spain; 3.Univ Complutense Madrid, Madrid, Spain; 4.Ludwig Maximilians Univ Munchen, Meteorol Inst, Munich, Germany; 5.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 6.NOAA, Phys Sci Div, Earth Syst Res Lab, Boulder, CO USA |
推荐引用方式 GB/T 7714 | De La Camara, Alvaro,Birner, Thomas,Albers, John R.. Are Sudden Stratospheric Warmings Preceded by Anomalous Tropospheric Wave Activity?[J]. JOURNAL OF CLIMATE,2019,32(21):7173-7189. |
APA | De La Camara, Alvaro,Birner, Thomas,&Albers, John R..(2019).Are Sudden Stratospheric Warmings Preceded by Anomalous Tropospheric Wave Activity?.JOURNAL OF CLIMATE,32(21),7173-7189. |
MLA | De La Camara, Alvaro,et al."Are Sudden Stratospheric Warmings Preceded by Anomalous Tropospheric Wave Activity?".JOURNAL OF CLIMATE 32.21(2019):7173-7189. |
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