Climate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisited

On 4-6 December 2015, the storm ``Desmond'' caused very heavy rainfall in northern England and Scotland, which led to widespread flooding. A week after the event we provided an initial assessment of the influence of anthropogenic climate change on the likelihood of one-day precipitation ev...

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Main Authors: Otto, F, van Oldenborgh, G, van der Wiel, K, Philip, S, Kew, S, Uhe, P, Cullen, H
Formato: Journal article
Publicado em: IOP Publishing 2018
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author Otto, F
van Oldenborgh, G
van der Wiel, K
Philip, S
Kew, S
Uhe, P
Cullen, H
author_facet Otto, F
van Oldenborgh, G
van der Wiel, K
Philip, S
Kew, S
Uhe, P
Cullen, H
author_sort Otto, F
collection OXFORD
description On 4-6 December 2015, the storm ``Desmond'' caused very heavy rainfall in northern England and Scotland, which led to widespread flooding. A week after the event we provided an initial assessment of the influence of anthropogenic climate change on the likelihood of one-day precipitation events averaged over an area encompassing northern England and southern Scotland using data and methods available immediately after the event occurred. The analysis was based on three independent methods of extreme event attribution: historical observed trends, coupled climate model simulations and a large ensemble of regional model simulations. All three methods agreed that the effect of climate change was positive, making precipitation events like this about 40% more likely, with a provisional 2.5-97.5% confidence interval of 5-80%. Here we revisit the assessment using more station data, an additional monthly event definition, a second global climate model and regional model simulations of winter 2015/16. The overall result of the analysis is similar to the real-time analysis with a best estimate of a 59% increase in event frequency, but a larger confidence interval that does include no change. It is important to highlight that the observational data in the additional monthly analysis does not only represent the rainfall associated with storm Desmond but also that of storms Eve and Frank occurring towards the end of the month.
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spelling oxford-uuid:dfb306d4-b727-4884-89a5-f29887e9c6ff2022-03-27T09:41:16ZClimate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisitedJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:dfb306d4-b727-4884-89a5-f29887e9c6ffSymplectic Elements at OxfordIOP Publishing2018Otto, Fvan Oldenborgh, Gvan der Wiel, KPhilip, SKew, SUhe, PCullen, HOn 4-6 December 2015, the storm ``Desmond'' caused very heavy rainfall in northern England and Scotland, which led to widespread flooding. A week after the event we provided an initial assessment of the influence of anthropogenic climate change on the likelihood of one-day precipitation events averaged over an area encompassing northern England and southern Scotland using data and methods available immediately after the event occurred. The analysis was based on three independent methods of extreme event attribution: historical observed trends, coupled climate model simulations and a large ensemble of regional model simulations. All three methods agreed that the effect of climate change was positive, making precipitation events like this about 40% more likely, with a provisional 2.5-97.5% confidence interval of 5-80%. Here we revisit the assessment using more station data, an additional monthly event definition, a second global climate model and regional model simulations of winter 2015/16. The overall result of the analysis is similar to the real-time analysis with a best estimate of a 59% increase in event frequency, but a larger confidence interval that does include no change. It is important to highlight that the observational data in the additional monthly analysis does not only represent the rainfall associated with storm Desmond but also that of storms Eve and Frank occurring towards the end of the month.
spellingShingle Otto, F
van Oldenborgh, G
van der Wiel, K
Philip, S
Kew, S
Uhe, P
Cullen, H
Climate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisited
title Climate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisited
title_full Climate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisited
title_fullStr Climate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisited
title_full_unstemmed Climate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisited
title_short Climate change increases the probability of heavy rains in Northern England/Southern Scotland like those of storm Desmond - a real-time event attribution revisited
title_sort climate change increases the probability of heavy rains in northern england southern scotland like those of storm desmond a real time event attribution revisited
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