DOI: 10.1175/JCLI-D-16-0663.1
Scopus记录号: 2-s2.0-85020742392
论文题名: Dynamics of the disrupted 2015/16 quasi-biennial oscillation
作者: Coy L. ; Newman P.A. ; Pawson S. ; Lait L.R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 15 起始页码: 5661
结束页码: 5674
语种: 英语
Scopus关键词: Momentum
; Oscillators (mechanical)
; Uncertainty analysis
; Upper atmosphere
; Data assimilation
; Global climate system
; Lower stratosphere
; Northern hemisphere
; Quasi-biennial oscillation
; Stratospheric circulations
; Wind variabilities
; Zonal-mean zonal winds
; Tropics
英文摘要: A significant disruption of the quasi-biennial oscillation (QBO) occurred during the Northern Hemisphere (NH) winter of 2015/16. Since the QBO is the major wind variability source in the tropical lower stratosphere and influences the rate of ascent of air entering the stratosphere, understanding the cause of this singular disruption may provide new insights into the variability and sensitivity of the global climate system. Here this disruptive event is examined using global reanalysis winds and temperatures from 1980 to 2016. Results reveal record maxima in tropical horizontal momentum fluxes and wave forcing of the tropical zonal mean zonal wind over the NH 2015/16 winter. The Rossby waves responsible for these record tropical values appear to originate in the NH and were focused strongly into the tropics at the 40-hPa level. Two additional NH winters, 1987/88 and 2010/11, were also found to have large tropical lower-stratospheric momentum flux divergences; however, the QBO westerlies did not change to easterlies in those cases. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48740
Appears in Collections: 气候减缓与适应 气候变化与战略
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作者单位: NASA Goddard Space Flight Center, Greenbelt, MD, United States; Science Systems and Applications, Inc., Lanham, MD, United States; Goddard Earth Sciences Technology and Research, Morgan State University, Baltimore, MD, United States
Recommended Citation:
Coy L.,Newman P.A.,Pawson S.,et al. Dynamics of the disrupted 2015/16 quasi-biennial oscillation[J]. Journal of Climate,2017-01-01,30(15)