DOI: 10.1007/s00382-016-3399-6
Scopus记录号: 2-s2.0-84994246815
论文题名: Evidence for wave resonance as a key mechanism for generating high-amplitude quasi-stationary waves in boreal summer
作者: Kornhuber K. ; Petoukhov V. ; Petri S. ; Rahmstorf S. ; Coumou D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 49, 期: 2017-05-06 起始页码: 1961
结束页码: 1979
语种: 英语
英文关键词: Atmospheric dynamics
; Extreme weather
; Rossby waves
; Wave resonance
英文摘要: Several recent northern hemisphere summer extremes have been linked to persistent high-amplitude wave patterns (e.g. heat waves in Europe 2003, Russia 2010 and in the US 2011, Floods in Pakistan 2010 and Europe 2013). Recently quasi-resonant amplification (QRA) was proposed as a mechanism that, when certain dynamical conditions are fulfilled, can lead to such high-amplitude wave events. Based on these resonance conditions a detection scheme to scan reanalysis data for QRA events in boreal summer months was implemented. With this objective detection scheme we analyzed the occurrence and duration of QRA events and the associated atmospheric flow patterns in 1979–2015 reanalysis data. We detect a total number of 178 events for wave 6, 7 and 8 and find that during roughly one-third of all high amplitude events QRA conditions were met for respective waves. Our analysis reveals a significant shift for quasi-stationary waves 6 and 7 towards high amplitudes during QRA events, lagging first QRA-detection by typically one week. The results provide further evidence for the validity of the QRA hypothesis and its important role in generating high amplitude waves in boreal summer. © 2016, Springer-Verlag Berlin Heidelberg. 资助项目: BMBF, Bundesministerium für Bildung und Forschung
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53092
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Potsdam Institute for Climate Impact Research – Earth System Analysis, Telegrafenberg A 31, Potsdam, Germany; Universität Potsdam, Am Neuen Palais 10, Potsdam, Germany; Department of Water and Climate Risk, Institute for Environmental Studies (IVM), VU University Amsterdam, De Boelelaan 1087, HV Amsterdam, Netherlands
Recommended Citation:
Kornhuber K.,Petoukhov V.,Petri S.,et al. Evidence for wave resonance as a key mechanism for generating high-amplitude quasi-stationary waves in boreal summer[J]. Climate Dynamics,2017-01-01,49(2017-05-06)