Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL082883 |
The Role of the Stratospheric Polar Vortex for the Austral Jet Response to Greenhouse Gas Forcing | |
Ceppi, Paulo1,2; Shepherd, Theodore G.2 | |
2019-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:12页码:6972-6979 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Future shifts of the austral midlatitude jet are subject to large uncertainties in climate model projections. Here we show that, in addition to other previously identified sources of intermodel uncertainty, changes in the timing of the stratospheric polar vortex breakdown modulate the austral jet response to greenhouse gas forcing during summertime (December-February). The relationship is such that a larger delay in vortex breakdown favors a more poleward jet shift, with an estimated 0.7-0.8 degrees increase in jet shift per 10-day delay in vortex breakdown. The causality of the link between the timing of the vortex breakdown and the tropospheric jet response is demonstrated through climate modeling experiments with imposed changes in the seasonality of the stratospheric polar vortex. The vortex response is estimated to account for about 30% of the intermodel variance in the shift of the summertime austral jet and about 45% of the mean jet shift. |
英文关键词 | jet stream stratospheric polar vortex climate change |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616300090 |
WOS关键词 | CIRCULATION RESPONSE ; CLIMATE-CHANGE ; SOUTHERN ; VARIABILITY ; PERSISTENCE ; BREAKDOWN |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/184289 |
专题 | 气候变化 |
作者单位 | 1.Imperial Coll London, Grantham Inst Climate Change & Environm, London, England; 2.Univ Reading, Dept Meteorol, Reading, Berks, England |
推荐引用方式 GB/T 7714 | Ceppi, Paulo,Shepherd, Theodore G.. The Role of the Stratospheric Polar Vortex for the Austral Jet Response to Greenhouse Gas Forcing[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(12):6972-6979. |
APA | Ceppi, Paulo,&Shepherd, Theodore G..(2019).The Role of the Stratospheric Polar Vortex for the Austral Jet Response to Greenhouse Gas Forcing.GEOPHYSICAL RESEARCH LETTERS,46(12),6972-6979. |
MLA | Ceppi, Paulo,et al."The Role of the Stratospheric Polar Vortex for the Austral Jet Response to Greenhouse Gas Forcing".GEOPHYSICAL RESEARCH LETTERS 46.12(2019):6972-6979. |
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