Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern
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 amplifi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2019-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/ab13bf |
| _version_ | 1797748084713717760 |
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| author | Kai Kornhuber Scott Osprey Dim Coumou Stefan Petri Vladimir Petoukhov Stefan Rahmstorf Lesley Gray |
| author_facet | Kai Kornhuber Scott Osprey Dim Coumou Stefan Petri Vladimir Petoukhov Stefan Rahmstorf Lesley Gray |
| author_sort | Kai Kornhuber |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T15:59:54Z |
| format | Article |
| id | doaj.art-b5f6cd7b908448179bd256ef33c76df6 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:59:54Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-b5f6cd7b908448179bd256ef33c76df62023-08-09T14:41:46ZengIOP PublishingEnvironmental Research Letters1748-93262019-01-0114505400210.1088/1748-9326/ab13bfExtreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 patternKai Kornhuber0https://orcid.org/0000-0001-5466-2059Scott Osprey1Dim Coumou2Stefan Petri3https://orcid.org/0000-0002-4379-4643Vladimir Petoukhov4Stefan Rahmstorf5Lesley Gray6Atmospheric, Oceanic and Planetary Physics, University of Oxford , Oxford, United Kingdom; National Centre for Atmospheric Science, United KingdomAtmospheric, Oceanic and Planetary Physics, University of Oxford , Oxford, United Kingdom; National Centre for Atmospheric Science, United KingdomEarth System Analysis, Potsdam Institute for Climate Impact Research, Member of the Leibniz Association, Potsdam, Germany; Institute for Environmental Studies, Vrije Universiteit Amsterdam, Amsterdam, The NetherlandsEarth System Analysis, Potsdam Institute for Climate Impact Research, Member of the Leibniz Association, Potsdam, GermanyEarth System Analysis, Potsdam Institute for Climate Impact Research, Member of the Leibniz Association, Potsdam, GermanyEarth System Analysis, Potsdam Institute for Climate Impact Research, Member of the Leibniz Association, Potsdam, GermanyAtmospheric, Oceanic and Planetary Physics, University of Oxford , Oxford, United Kingdom; National Centre for Atmospheric Science, United KingdomThe 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.https://doi.org/10.1088/1748-9326/ab13bfextreme weatherRossby wavesteleconnectionsheat wavesatmosphere dynamics |
| spellingShingle | Kai Kornhuber Scott Osprey Dim Coumou Stefan Petri Vladimir Petoukhov Stefan Rahmstorf Lesley Gray Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern Environmental Research Letters extreme weather Rossby waves teleconnections heat waves atmosphere dynamics |
| title | Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern |
| title_full | Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern |
| title_fullStr | Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern |
| title_full_unstemmed | Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern |
| title_short | Extreme weather events in early summer 2018 connected by a recurrent hemispheric wave-7 pattern |
| title_sort | extreme weather events in early summer 2018 connected by a recurrent hemispheric wave 7 pattern |
| topic | extreme weather Rossby waves teleconnections heat waves atmosphere dynamics |
| url | https://doi.org/10.1088/1748-9326/ab13bf |
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