DOI: 10.1175/JCLI-D-16-0793.1
Scopus记录号: 2-s2.0-85027268568
论文题名: Decadal modulation of precipitation patterns over eastern China by sea surface temperature anomalies
作者: Yang Q. ; Ma Z. ; Fan X. ; Yang Z.-L. ; Xu Z. ; Wu P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 17 起始页码: 7017
结束页码: 7033
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Atmospheric thermodynamics
; Climate change
; Climatology
; Coastal zones
; Drought
; Earth atmosphere
; Floods
; Submarine geophysics
; Surface properties
; Surface waters
; Atlantic multidecadal oscillations
; Atmospheric circulation anomaly
; Atmospheric general circulation models
; ENSO
; Flood event
; Pacific decadal oscillation
; Sea surface temperature (SST)
; Sea surface temperature anomalies
; Oceanography
英文摘要: Annual precipitation anomalies over eastern China are characterized by a north-south dipole pattern, referred to as the "southern flooding and northern drought" pattern (SF/ND), fluctuating on decadal time scales. Previous research has suggested possible links with oceanic forcing, but the underlying physical mechanisms by which sea surface temperature (SST) variability impacts the dipole pattern remains unclear. Idealized atmospheric general circulation model experiments conducted by the U.S. CLIVAR Drought Working Group are used to investigate the role of historical SST anomalies associated with Pacific El Niño-Southern Oscillation (ENSO)-like and the Atlantic multidecadal oscillation (AMO) patterns in this dipole pattern. The results show that the Pacific SST pattern plays a dominant role in driving the decadal variability of this dipole pattern and the associated atmospheric circulation anomalies, whereas the Atlantic SST pattern contributes to a much lesser degree. The direct atmospheric response to the Pacific SST pattern is a large-scale cyclonic or anticyclonic circulation anomaly in the lower troposphere occupying the entire northern North Pacific. During the warm phase of the Pacific SST pattern, it is cyclonic with northwesterly wind anomalies over northern China pushing the monsoon front to the south and consequently SF/ND. During the cold phase of the Pacific SST pattern, the circulation anomaly reverses with southeasterly winds over northern China allowing the monsoon front and the associated rainband to migrate northward, resulting in southern drought and northern flooding. The Atlantic SST pattern plays a supplementary role, enhancing the dipole pattern when the Pacific SST and Atlantic SST patterns are in opposite phases and weakening it when the phases are the same. © 2017 American Meteorological Society. 资助项目: NSFC, 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/49890
Appears in Collections: 气候变化事实与影响
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作者单位: CAS Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Meteorology Program, Department of Geography and Geology, Western Kentucky University, Bowling Green, KY, United States; Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, United States; Met Office Hadley Centre, Exeter, United Kingdom
Recommended Citation:
Yang Q.,Ma Z.,Fan X.,et al. Decadal modulation of precipitation patterns over eastern China by sea surface temperature anomalies[J]. Journal of Climate,2017-01-01,30(17)