Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084763 |
Quantifying the Timescale and Strength of Southern Hemisphere Intraseasonal Stratosphere-troposphere Coupling | |
Saggioro, Elena1; Shepherd, Theodore G.2 | |
2019-11-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:22页码:13479-13487 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The Southern Hemisphere zonal circulation manifests a downward influence of the stratosphere on the troposphere from late spring to early summer. However, the strength and timescale of the connection, given the stratospheric state, have not been explicitly quantified. Here, SH zonal wind reanalysis time series are analyzed with a methodology designed to detect the minimal set of statistical predictors of multiple interacting variables via conditional independence tests. Our results confirm from data that the variability of the stratospheric polar vortex is a predictor of the tropospheric eddy-driven jet between September and January. The vortex variability explains about 40% of monthly mean jet variability at a lead time of 1 month and can entirely account for the observed jet persistence. Our statistical model can quantitatively connect the multidecadal trends observed in the vortex and jet during the satellite era. This shows how short-term variability can help understand statistical links in long-term changes. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000505879600090 |
WOS关键词 | POLAR-NIGHT JET ; ANNULAR MODE ; INTERANNUAL VARIABILITY ; PART I ; CIRCULATION ; PERSISTENCE ; PREDICTION ; BREAKDOWN ; NORTHERN |
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/225125 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Reading, Dept Math & Stat, Reading, Berks, England; 2.Univ Reading, Dept Meteorol, Reading, Berks, England |
推荐引用方式 GB/T 7714 | Saggioro, Elena,Shepherd, Theodore G.. Quantifying the Timescale and Strength of Southern Hemisphere Intraseasonal Stratosphere-troposphere Coupling[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(22):13479-13487. |
APA | Saggioro, Elena,&Shepherd, Theodore G..(2019).Quantifying the Timescale and Strength of Southern Hemisphere Intraseasonal Stratosphere-troposphere Coupling.GEOPHYSICAL RESEARCH LETTERS,46(22),13479-13487. |
MLA | Saggioro, Elena,et al."Quantifying the Timescale and Strength of Southern Hemisphere Intraseasonal Stratosphere-troposphere Coupling".GEOPHYSICAL RESEARCH LETTERS 46.22(2019):13479-13487. |
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