DOI: 10.1016/j.accre.2016.05.001
Scopus记录号: 2-s2.0-84976475280
论文题名: Impact of ENSO events on the interannual variability of Hadley circulation extents in boreal winter
作者: Guo Y.-P. ; Li J.-P.
刊名: Advances in Climate Change Research
ISSN: 16749278
出版年: 2016
卷: 7, 期: 2017-01-02 起始页码: 46
结束页码: 53
语种: 英语
英文关键词: ENSO
; Extents
; Hadley circulation
; Meridional temperature gradient
英文摘要: The interannual variability of the boreal winter Hadley circulation extents during the period of 1979–2014 and its links to El Niño-Southern Oscillation (ENSO) were investigated by using reanalysis datasets. Results showed that the El Niño (La Niña) events can induce the shrinking (expansion) of Hadley circulation extent in the Southern Hemisphere. For the Northern Hemisphere, El Niño (La Niña) mainly leads to shrinking (expansion) of the Hadley circulation extent in the middle and lower troposphere and expansion (shrinking) of the Hadley circulation extent in the upper troposphere. The ENSO associated meridional temperature gradients have close relationship with the Hadley circulation extents in both Hemispheres. But in the Northern Hemisphere, the ENSO associated eddy momentum flux divergence plays more important role in affecting the Hadley circulation extent than the meridional temperature gradient because of the small local Rossby number. In the Southern Hemisphere, as the ENSO induced eddy momentum flux divergence is small, the meridional temperature gradient dominates the change of the Hadley circulation extent. © 2016 National Climate Center (China Meteorological Administration) 资助项目: National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/58859
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences, Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth Science, University of Chinese Academy of Sciences, Beijing, China; College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
Recommended Citation:
Guo Y.-P.,Li J.-P.. Impact of ENSO events on the interannual variability of Hadley circulation extents in boreal winter[J]. Advances in Climate Change Research,2016-01-01,7(2017-01-02)