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Journal article

Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern

Abstract:
The summer of 2018 witnessed a number of extreme weather events such as heatwaves in North America, Western Europe and the Caspian Sea region, and rainfall extremes in South-East Europe and Japan that occurred near-simultaneously. Here we show that some of these extremes were connected by an amplified hemisphere-wide wavenumber 7 circulation pattern. We show that this pattern constitutes an important teleconnection in Northern Hemisphere summer associated with prolonged and above-normal temperatures in North America, Western Europe and the Caspian Sea region. This pattern was also observed during the European heatwaves of 2003, 2006 and 2015 among others. We show that the occurrence of this wave 7 pattern has increased over recent decades.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1748-9326/ab13bf

Authors


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Role:
Author
ORCID:
0000-0001-5466-2059
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atmos Ocean & Planet Physics
Role:
Author
ORCID:
0000-0002-8751-1211
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Role:
Author
ORCID:
0000-0002-4379-4643


Publisher:
IOP Publishing
Journal:
Environmental Research Letters More from this journal
Volume:
14
Issue:
5
Article number:
054002
Publication date:
2019-04-26
Acceptance date:
2019-03-27
DOI:
ISSN:
1748-9326


Keywords:
Pubs id:
pubs:994905
UUID:
uuid:43877964-ae55-4a5c-bc8e-cf6221ee87e3
Local pid:
pubs:994905
Source identifiers:
994905
Deposit date:
2019-04-29

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