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  Role of quasiresonant planetary wave dynamics in recent boreal spring-to-autumn extreme events

Petoukhov, V., Petri, S., Rahmstorf, S., Coumou, D., Kornhuber, K., Schellnhuber, H. J. (2016): Role of quasiresonant planetary wave dynamics in recent boreal spring-to-autumn extreme events. - Proceedings of the National Academy of Sciences of the United States of America (PNAS), 113, 25, 6862-6867.
https://doi.org/10.1073/pnas.1606300113

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Item Permalink: https://publications.pik-potsdam.de/pubman/item/item_20945 Version Permalink: https://publications.pik-potsdam.de/pubman/item/item_20945_5
Genre: Journal Article

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 Creators:
Petoukhov, Vladimir1, Author              
Petri, Stefan1, Author              
Rahmstorf, Stefan1, Author              
Coumou, Dim1, Author              
Kornhuber, Kai1, Author              
Schellnhuber, Hans Joachim1, Author              
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1Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: In boreal spring-to-autumn (May-to-September) 2012 and 2013, the Northern Hemisphere (NH) has experienced a large number of severe midlatitude regional weather extremes. Here we show that a considerable part of these extremes were accompanied by highly magnified quasistationary midlatitude planetary waves with zonal wave numbers m = 6, 7, and 8. We further show that resonance conditions for these planetary waves were, in many cases, present before the onset of high-amplitude wave events, with a lead time up to 2 wk, suggesting that quasiresonant amplification (QRA) of these waves had occurred. Our results support earlier findings of an important role of the QRA mechanism in amplifying planetary waves, favoring recent NH weather extremes.

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 Dates: 2016
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1073/pnas.1606300113
PIKDOMAIN: Earth System Analysis - Research Domain I
PIKDOMAIN: Director / Executive Staff / Science & Society
eDoc: 7209
Research topic keyword: Atmosphere
Research topic keyword: Extremes
Research topic keyword: Weather
Model / method: Aeolus
Regional keyword: Global
Organisational keyword: RD1 - Earth System Analysis
Organisational keyword: Director Emeritus Schellnhuber
Working Group: Earth System Model Development
Working Group: Earth System Modes of Operation
 Degree: -

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Title: Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 113 (25) Sequence Number: - Start / End Page: 6862 - 6867 Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals410