DOI: 10.1002/2015GL066959
论文题名: Local finite-amplitude wave activity as an objective diagnostic of midlatitude extreme weather
作者: Chen G. ; Lu J. ; Alex Burrows D. ; Ruby Leung L.
刊名: Geophysical Research Letters
ISSN: 0094-8278
EISSN: 1944-8009
出版年: 2015
卷: 42, 期: 24 起始页码: 10952
结束页码: 10960
语种: 英语
英文关键词: blocking
; extreme weather
; local wave activity
; wave breaking
Scopus关键词: Mechanical waves
; Weather information services
; Blocking
; Extreme weather
; Extreme weather events
; Finite amplitude waves
; Geo-potential heights
; Local wave
; Regional climate changes
; Wavebreaking
; Climate change
; amplitude
; Arctic Oscillation
; climate change
; climate conditions
; climatology
; extreme event
; geopotential
; height
; midlatitude environment
; regional climate
; spatiotemporal analysis
; trend analysis
; wave action
; wave breaking
英文摘要: Midlatitude extreme weather events are responsible for a large part of climate-related damage, yet our understanding of these extreme events is limited, partly due to the lack of a theoretical basis for midlatitude extreme weather. In this letter, the local finite-amplitude wave activity (LWA) of Huang and Nakamura (2015) is introduced as a diagnostic of the 500 hPa geopotential height for characterizing midlatitude weather events. It is found that the LWA climatology and its variability associated with the Arctic Oscillation agree broadly with the previously reported blocking frequency in the literature. There is a strong seasonal and spatial dependence in the trends of LWA in recent decades. While there is no observational evidence for a hemispheric-scale increase in wave amplitude, robust trends in wave activity can be identified at the regional scales, with important implications for regional climate change. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955205823&doi=10.1002%2f2015GL066959&partnerID=40&md5=9a905e08ae04d1cf4b00305ef88d3d5e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7894
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United States
Recommended Citation:
Chen G.,Lu J.,Alex Burrows D.,et al. Local finite-amplitude wave activity as an objective diagnostic of midlatitude extreme weather[J]. Geophysical Research Letters,2015-01-01,42(24).