globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-016-3229-x
Scopus记录号: 2-s2.0-84976313970
论文题名:
Simulated decadal modes of the NH atmospheric circulation arising from intra-decadal variability, external forcing and slow-decadal climate processes
作者: Lou J.; Zheng X.; Frederiksen C.S.; Liu H.; Grainger S.; Ying K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期:2017-07-08
起始页码: 2635
结束页码: 2652
语种: 英语
英文关键词: 500-hPa geopotential height ; Decadal modes ; Intra-decadal variability ; Potential decadal predictability ; Sea level pressure
英文摘要: A decadal variance decomposition method is applied to the Northern Hemisphere (NH) 500-hPa geopotential height (GPH) and the sea level pressure (SLP) taken from the last millennium (850–1850 AD) experiment with the coupled climate model CCSM4, to estimate the contribution of the intra-decadal variability to the inter-decadal variability. By removing the intra-decadal variability from the total inter-decadal variability, the residual variability is more likely to be associated with slowly varying external forcings and slow-decadal climate processes, and therefore is referred to as slow-decadal variability. The results show that the (multi-)decadal changes of the NH 500-hPa GPH are primarily dominated by slow-decadal variability, whereas the NH SLP field is primarily dominated by the intra-decadal variability. At both pressure levels, the leading intra-decadal modes each have features related to the El Niño–southern oscillation, the intra-decadal variability of the Pacific decadal oscillation (PDO) and the Arctic oscillation (AO); while the leading slow-decadal modes are associated with external radiative forcing (mostly with volcanic aerosol loadings), the Atlantic multi-decadal oscillation and the slow-decadal variability of AO and PDO. Moreover, the radiative forcing has much weaker effect to the SLP than that to the 500-hPa GPH. © 2016, Springer-Verlag Berlin Heidelberg.
资助项目: Department of S and T for Social Development ; Department of S and T for Social Development
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53286
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作者单位: College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Key Laboratory of Regional Climate-Environment Research for East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; The Collaboration for Australian Weather and Climate Research, Bureau of Meteorology, Melbourne, Australia; CSIRO Oceans and Atmosphere, Hobart, Australia; Lamont-Doherty Earth Observatory, Columbia University, New York City, NY, United States

Recommended Citation:
Lou J.,Zheng X.,Frederiksen C.S.,et al. Simulated decadal modes of the NH atmospheric circulation arising from intra-decadal variability, external forcing and slow-decadal climate processes[J]. Climate Dynamics,2017-01-01,48(2017-07-08)
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