Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0692.1 |
Wave Events: Climatology, Trends, and Relationship to Northern Hemisphere Winter Blocking and Weather Extremes | |
Martineau, Patrick1; Chen, Gang1; Burrows, D. Alex2 | |
2017-08-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Diagnostics of finite-amplitude local wave activity (LWA) are applied to the 500-hPa geopotential height field to diagnose persistent synoptic weather events of anomalously large wave activity in the Northern Hemisphere. By considering the cyclonic and anticyclonic components of LWA separately, persistent weather systems associated with large-amplitude troughs and ridges are detected. While anticyclonic wave events are predominantly found over Europe and Alaska, cyclonic wave events usually occur over East Asia and northeastern Canada. Those preferred regions correspond to the location of planetary-scale ridges and troughs, which contribute, together with transient anomalies, to the formation of wave events. Although wave events are not blocking events per definition, they are typically associated with increased blocking in their vicinity. Their spatial relationship to blocking, however, varies depending on their cyclonic or anticyclonic nature and the type of wave-breaking signatures. Wave events are also shown to be accompanied by warm or cold temperature extremes, whose spatial pattern depends on the type of events, cyclonic or anticyclonic, and the sector affected. Trends in the frequency of wave events indicate that cyclonic wave events and the associated cold extremes affecting East Asia have become more frequent in recent decades and could be linked to recent trends toward La Ni (n) over tildea-like conditions in the Pacific and trends toward the negative phase of Arctic Oscillation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405470400005 |
WOS关键词 | SCALE ROSSBY WAVES ; ATMOSPHERIC BLOCKING ; BREAKING CHARACTERISTICS ; ARCTIC AMPLIFICATION ; SOUTHERN-HEMISPHERE ; MIDLATITUDE WEATHER ; POTENTIAL VORTICITY ; AMPLITUDE ; FLOW ; VARIABILITY |
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/19422 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 2.Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY USA |
推荐引用方式 GB/T 7714 | Martineau, Patrick,Chen, Gang,Burrows, D. Alex. Wave Events: Climatology, Trends, and Relationship to Northern Hemisphere Winter Blocking and Weather Extremes[J]. JOURNAL OF CLIMATE,2017,30(15). |
APA | Martineau, Patrick,Chen, Gang,&Burrows, D. Alex.(2017).Wave Events: Climatology, Trends, and Relationship to Northern Hemisphere Winter Blocking and Weather Extremes.JOURNAL OF CLIMATE,30(15). |
MLA | Martineau, Patrick,et al."Wave Events: Climatology, Trends, and Relationship to Northern Hemisphere Winter Blocking and Weather Extremes".JOURNAL OF CLIMATE 30.15(2017). |
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