Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0462.1 |
A Dynamical Perspective on Atmospheric Temperature Variability and Its Response to Climate Change | |
Tamarin-Brodsky, Talia1; Hodges, Kevin1,2; Hoskins, Brian J.1; Shepherd, Theodore G.1 | |
2019-03-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:6页码:1707-1724 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The atmospheric temperature distribution is typically described by its mean and variance, while higher-order moments, such as skewness, have received less attention. Skewness is a measure of the asymmetry between the positive and negative tails of the distribution, which has implications for extremes. It was recently shown that near-surface temperature in the Southern Hemisphere is positively skewed on the poleward side of the storm tracks and negatively skewed on the equatorward side. Here we take a dynamical approach to further study what controls the spatial structure of the near-surface temperature distribution in this region. We employ a tracking algorithm to study the formation, intensity, and movement of warm and cold temperature anomalies. We show that warm anomalies are generated on the equatorward side of the storm tracks and propagate poleward, while cold anomalies are generated on the poleward side and propagate equatorward. We further show that while the perturbation growth is mainly achieved through linear meridional advection, it is the nonlinear meridional advection that is responsible for the meridional movement of the temperature anomalies and therefore to the differential skewness. The projected poleward shift and increase of the temperature variance maximum in the Southern Hemisphere under global warming is shown to be composed of a poleward shift and increase in the maximum intensity of both warm and cold anomalies, and a decrease in their meridional displacements. An analytic expression is derived for the nonlinear meridional temperature tendency, which captures the spatial structure of the skewness and its projected changes. |
英文关键词 | Atmospheric circulation Dynamics Eddies Advection Climate change Temperature |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459544500001 |
WOS关键词 | ARCTIC AMPLIFICATION ; BAROCLINIC INSTABILITY ; EXTREMES ; SKEWNESS ; INCREASE ; HEAT |
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/20308 |
专题 | 气候变化 |
作者单位 | 1.Univ Reading, Dept Meteorol, Reading, Berks, England; 2.Univ Reading, Natl Ctr Atmospher Sci, Reading, Berks, England |
推荐引用方式 GB/T 7714 | Tamarin-Brodsky, Talia,Hodges, Kevin,Hoskins, Brian J.,et al. A Dynamical Perspective on Atmospheric Temperature Variability and Its Response to Climate Change[J]. JOURNAL OF CLIMATE,2019,32(6):1707-1724. |
APA | Tamarin-Brodsky, Talia,Hodges, Kevin,Hoskins, Brian J.,&Shepherd, Theodore G..(2019).A Dynamical Perspective on Atmospheric Temperature Variability and Its Response to Climate Change.JOURNAL OF CLIMATE,32(6),1707-1724. |
MLA | Tamarin-Brodsky, Talia,et al."A Dynamical Perspective on Atmospheric Temperature Variability and Its Response to Climate Change".JOURNAL OF CLIMATE 32.6(2019):1707-1724. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论