DOI: 10.1002/2014GL059748
论文题名: Probable causes of the abnormal ridge accompanying the 2013-2014 California drought: ENSO precursor and anthropogenic warming footprint
作者: Wang S.-Y. ; Hipps L. ; Gillies R.R. ; Yoon J.-H.
刊名: Geophysical Research Letters
ISSN: 0094-10083
EISSN: 1944-9814
出版年: 2014
卷: 41, 期: 9 起始页码: 3220
结束页码: 3226
语种: 英语
英文关键词: anthropogenic warming
; California drought
; ENSO precursor
; teleconnection
Scopus关键词: Atmospheric pressure
; Drought
; Wave energy conversion
; Anthropogenic warming
; California
; Circulation patterns
; ENSO precursor
; Greenhouse gas loading
; Pacific decadal oscillation
; Teleconnections
; Western North Pacific
; Climatology
; amplitude
; anthropogenic effect
; drought
; El Nino-Southern Oscillation
; Pacific Decadal Oscillation
; Rossby wave
; teleconnection
; wave energy
; California
; Pacific Ocean
; Pacific Ocean (Northwest)
; United States
英文摘要: The 2013-2014 California drought was initiated by an anomalous high-amplitude ridge system. The anomalous ridge was investigated using reanalysis data and the Community Earth System Model (CESM). It was found that the ridge emerged from continual sources of Rossby wave energy in the western North Pacific starting in late summer and subsequently intensified into winter. The ridge generated a surge of wave energy downwind and deepened further the trough over the northeast U.S., forming a dipole. The dipole and associated circulation pattern is not linked directly with either El Niño-Southern Oscillation (ENSO) or Pacific Decadal Oscillation; instead, it is correlated with a type of ENSO precursor. The connection between the dipole and ENSO precursor has become stronger since the 1970s, and this is attributed to increased greenhouse gas loading as simulated by the CESM. Therefore, there is a traceable anthropogenic warming footprint in the enormous intensity of the anomalous ridge during winter 2013-2014 and the associated drought. Key Points The drought-inducing ridge is recurrent The ridge is linked to an ENSO precursor The link of the ridge with ENSO precursor has grown © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901924588&doi=10.1002%2f2014GL059748&partnerID=40&md5=1d2cd423ad557968422930deefe9c7b1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7347
Appears in Collections: 气候减缓与适应
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作者单位: Utah Climate Center, Utah State University, Logan, UT, United States
Recommended Citation:
Wang S.-Y.,Hipps L.,Gillies R.R.,et al. Probable causes of the abnormal ridge accompanying the 2013-2014 California drought: ENSO precursor and anthropogenic warming footprint[J]. Geophysical Research Letters,2014-01-01,41(9).