Comparison of methods: Attributing the 2014 record European temperatures to human influences

The year 2014 broke the record for the warmest yearly average temperature in Europe. Attributing how much this was due to anthropogenic climate change and how much it was due to natural variability is a challenging question but one that is important to address. In this study, we compare four event a...

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Main Authors: Uhe, P, Otto, F, Haustein, K, van Oldenborgh, G, King, A, Wallom, D, Allen, M, Cullen, H
Format: Journal article
Published: American Geophysical Union 2016
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author Uhe, P
Otto, F
Haustein, K
van Oldenborgh, G
King, A
Wallom, D
Allen, M
Cullen, H
author_facet Uhe, P
Otto, F
Haustein, K
van Oldenborgh, G
King, A
Wallom, D
Allen, M
Cullen, H
author_sort Uhe, P
collection OXFORD
description The year 2014 broke the record for the warmest yearly average temperature in Europe. Attributing how much this was due to anthropogenic climate change and how much it was due to natural variability is a challenging question but one that is important to address. In this study, we compare four event attribution methods. We look at the risk ratio (RR) associated with anthropogenic climate change for this event, over the whole European region, as well as its spatial distribution. Each method shows a very strong anthropogenic influence on the event over Europe. However, the magnitude of the RR strongly depends on the definition of the event and the method used. Across Europe, attribution over larger regions tended to give greater RR values. This highlights a major source of sensitivity in attribution statements and the need to define the event to analyze on a case-by-case basis.
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spelling oxford-uuid:91be2968-1941-40b2-b178-ead653d015c42022-03-26T23:20:43ZComparison of methods: Attributing the 2014 record European temperatures to human influencesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:91be2968-1941-40b2-b178-ead653d015c4Symplectic Elements at OxfordAmerican Geophysical Union2016Uhe, POtto, FHaustein, Kvan Oldenborgh, GKing, AWallom, DAllen, MCullen, HThe year 2014 broke the record for the warmest yearly average temperature in Europe. Attributing how much this was due to anthropogenic climate change and how much it was due to natural variability is a challenging question but one that is important to address. In this study, we compare four event attribution methods. We look at the risk ratio (RR) associated with anthropogenic climate change for this event, over the whole European region, as well as its spatial distribution. Each method shows a very strong anthropogenic influence on the event over Europe. However, the magnitude of the RR strongly depends on the definition of the event and the method used. Across Europe, attribution over larger regions tended to give greater RR values. This highlights a major source of sensitivity in attribution statements and the need to define the event to analyze on a case-by-case basis.
spellingShingle Uhe, P
Otto, F
Haustein, K
van Oldenborgh, G
King, A
Wallom, D
Allen, M
Cullen, H
Comparison of methods: Attributing the 2014 record European temperatures to human influences
title Comparison of methods: Attributing the 2014 record European temperatures to human influences
title_full Comparison of methods: Attributing the 2014 record European temperatures to human influences
title_fullStr Comparison of methods: Attributing the 2014 record European temperatures to human influences
title_full_unstemmed Comparison of methods: Attributing the 2014 record European temperatures to human influences
title_short Comparison of methods: Attributing the 2014 record European temperatures to human influences
title_sort comparison of methods attributing the 2014 record european temperatures to human influences
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