Large‐Scale Drivers of Persistent Extreme Weather During Early Summer 2021 in Europe

Tuel, A.; Steinfeld, D.; Ali, S. M.; Sprenger, M.; Martius, O. (2022). Large‐Scale Drivers of Persistent Extreme Weather During Early Summer 2021 in Europe. Geophysical Research Letters, 49(18) American Geophysical Union 10.1029/2022GL099624

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The early summer of 2021 was a season of extremes across Europe. Heatwaves, droughts and wildfires hit Eastern Europe and the Baltic, while repeated extreme precipitation in Western Europe culminated in massive floods in mid-July. The large-scale circulation during this period was remarkably persistent, with an extremely meridionally amplified flow over Europe. Recurrent blocking over the Baltic and Rossby wave breaking in the North Atlantic led to frequent heavy precipitation in Western Europe and the Black Sea and to warm and dry conditions over Eastern Europe. These conditions persisted for a month as the blocks and wave breaking episodes strengthened one another, while three closely spaced extratropical transitions of tropical cyclones in the eastern North Atlantic led to recurrent amplification of the jet. Seasonal anomalies thus emerge from the complex interactions of individual weather events, offering an interesting storyline for climate impact assessment and a formidable challenge for (sub-) seasonal prediction.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography
08 Faculty of Science > Institute of Geography > Physical Geography > Unit Impact
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography > Physical Geography
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR) > MobiLab

UniBE Contributor:

Tuel, Alexandre, Steinfeld, Daniel, Ali, Syed Mubashshir, Romppainen-Martius, Olivia

Subjects:

900 History > 910 Geography & travel
500 Science > 550 Earth sciences & geology

ISSN:

0094-8276

Publisher:

American Geophysical Union

Funders:

[UNSPECIFIED] Swiss Science Foundation

Language:

English

Submitter:

Lara Maude Zinkl

Date Deposited:

20 Oct 2022 08:03

Last Modified:

23 Mar 2023 00:25

Publisher DOI:

10.1029/2022GL099624

BORIS DOI:

10.48350/173931

URI:

https://boris.unibe.ch/id/eprint/173931

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