Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL080051 |
Estimating Subseasonal Variability and Trends in Global Atmosphere Using Reanalysis Data | |
Zagar, N.1; Jelic, D.1,2; Alexander, M. J.3; Manzini, E.4 | |
2018-12-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:23页码:12999-13007 |
文章类型 | Article |
语种 | 英语 |
国家 | Slovenia; Croatia; USA; Germany |
英文摘要 | A new measure of subseasonal variability is introduced that provides a scale-dependent estimation of vertically and meridionally integrated atmospheric variability in terms of the normal modes of linearized primitive equations. Applied to the ERA-Interim data, the new measure shows that subseasonal variability decreases for larger zonal wave numbers. Most of variability is due to balanced (Rossby mode) dynamics but the portion associated with the inertio-gravity (IG) modes increases as the scale reduces. Time series of globally integrated variability anomalies in ERA-Interim show an increase in variability after year 2000. In recent years the anomalies have been about 2% above the 1981-2010 average. The relative increase in variability projecting on the IG modes is larger and more persistent than for the Rossby modes. Although the IG part is a small component of the subseasonal variability, it is an important effect likely reflecting the observed increase in the tropical precipitation variability. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454296600040 |
WOS关键词 | PLANETARY-WAVES ; CIRCULATION ; REPRESENTATION ; ENERGY ; FREQUENCY ; FLUXES ; TIME |
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/25821 |
专题 | 气候变化 |
作者单位 | 1.Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia; 2.Univ Zagreb, Fac Sci, Zagreb, Croatia; 3.NWRA Colorado Res Associates, Boulder, CO USA; 4.Max Planck Inst Meteorol, Hamburg, Germany |
推荐引用方式 GB/T 7714 | Zagar, N.,Jelic, D.,Alexander, M. J.,et al. Estimating Subseasonal Variability and Trends in Global Atmosphere Using Reanalysis Data[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(23):12999-13007. |
APA | Zagar, N.,Jelic, D.,Alexander, M. J.,&Manzini, E..(2018).Estimating Subseasonal Variability and Trends in Global Atmosphere Using Reanalysis Data.GEOPHYSICAL RESEARCH LETTERS,45(23),12999-13007. |
MLA | Zagar, N.,et al."Estimating Subseasonal Variability and Trends in Global Atmosphere Using Reanalysis Data".GEOPHYSICAL RESEARCH LETTERS 45.23(2018):12999-13007. |
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