globalchange  > 气候减缓与适应
DOI: 10.1175/JCLI-D-17-0286.1
Scopus记录号: 2-s2.0-85041695406
论文题名:
Daily to decadal modulation of jet variability
作者: Woollings T.; Barnes E.; Hoskins B.; Kwon Y.-O.; Lee R.W.; Li C.; Madonna E.; McGraw M.; Parker T.; Rodrigues R.; Spensberger C.; Williams K.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期:4
起始页码: 1297
结束页码: 1314
语种: 英语
英文关键词: Atmospheric circulation ; Baroclinic models ; Decadal variability ; Jets ; North Atlantic Oscillation
Scopus关键词: Atmospheric pressure ; Jets ; Mechanical waves ; Atmospheric circulation ; Average speed ; Baroclinic models ; Decadal timescale ; Decadal variability ; North Atlantic ; North Atlantic oscillations ; Refractive properties ; Modulation ; atmospheric circulation ; baroclinic motion ; decadal variation ; jet stream ; North Atlantic Oscillation ; Rossby wave ; wave breaking
英文摘要: The variance of a jet's position in latitude is found to be related to its average speed: when a jet becomes stronger, its variability in latitude decreases. This relationship is shown to hold for observed midlatitude jets around the world and also across a hierarchy of numerical models. North Atlantic jet variability is shown to be modulated on decadal time scales, with decades of a strong, steady jet being interspersed with decades of a weak, variable jet. These modulations are also related to variations in the basinwide occurrence of high-impact blocking events. A picture emerges of complex multidecadal jet variability in which recent decades do not appear unusual. An underlying barotropic mechanism is proposed to explain this behavior, related to the change in refractive properties of a jet as it strengthens, and the subsequent effect on the distribution of Rossby wave breaking. © 2018 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111665
Appears in Collections:气候减缓与适应

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作者单位: Department of Physics, University of Oxford, Oxford, United Kingdom; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; University of Reading, Reading, United Kingdom; Imperial College, London, United Kingdom; Woods Hole Oceanographic Institution, Woods Hole, MA, United States; National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, United Kingdom; Geophysical Institute, University of Bergen, Bergen, Norway; Bjerknes Centre for Climate Research, Bergen, Norway; Department of Geosciences, Federal University of Santa Catarina, Santa Catarina, Brazil; Met Office, Exeter, United Kingdom

Recommended Citation:
Woollings T.,Barnes E.,Hoskins B.,et al. Daily to decadal modulation of jet variability[J]. Journal of Climate,2018-01-01,31(4)
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