Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones

For the Northern Hemisphere extratropics, changes in the mid-latitude storm tracks are key to understanding the impacts of climate warming, but projections of their future location in current climate models are affected by large uncertainty. Here, we show that in spite of this uncertainty in the atm...

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Main Authors: Matt Hawcroft, Ella Walsh, Kevin Hodges, Giuseppe Zappa
Format: Article
Language:English
Published: IOP Publishing 2018-01-01
Series:Environmental Research Letters
Subjects:
Online Access:https://doi.org/10.1088/1748-9326/aaed59
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author Matt Hawcroft
Ella Walsh
Kevin Hodges
Giuseppe Zappa
author_facet Matt Hawcroft
Ella Walsh
Kevin Hodges
Giuseppe Zappa
author_sort Matt Hawcroft
collection DOAJ
description For the Northern Hemisphere extratropics, changes in the mid-latitude storm tracks are key to understanding the impacts of climate warming, but projections of their future location in current climate models are affected by large uncertainty. Here, we show that in spite of this uncertainty in the atmospheric circulation response to warming, by analysing the behaviour of the storms (or extratropical cyclones) themselves, projections of change in the number of the most intensely precipitating extratropical cyclones are substantial and consistent across models. In particular, we show large increases in the frequency of extreme extratropical cyclones (those above the present day 99th percentile of precipitation intensity) by the end of the century. In both Europe and North America, these intensely precipitating extratropical cyclones are projected to more than triple in number by the end of the century unless greenhouse gas emissions are mitigated. Such changes in extratropical cyclone behaviour may have major impacts on society given intensely precipitating extratropical cyclones are responsible for many large-scale flooding events, and associated severe economic losses, in these regions.
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spelling doaj.art-ae3b5f1d7b3746aea2bf9e3c4732161d2023-08-09T14:40:02ZengIOP PublishingEnvironmental Research Letters1748-93262018-01-01131212400610.1088/1748-9326/aaed59Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclonesMatt Hawcroft0https://orcid.org/0000-0002-0311-974XElla Walsh1Kevin Hodges2Giuseppe Zappa3College of Engineering, Mathematics and Physical Sciences, University of Exeter , Exeter, United KingdomCollege of Engineering, Mathematics and Physical Sciences, University of Exeter , Exeter, United Kingdom; School of Geography and the Environment, University of Oxford , Oxford, United KingdomDepartment of Meteorology, University of Reading , Reading, United KingdomDepartment of Meteorology, University of Reading , Reading, United KingdomFor the Northern Hemisphere extratropics, changes in the mid-latitude storm tracks are key to understanding the impacts of climate warming, but projections of their future location in current climate models are affected by large uncertainty. Here, we show that in spite of this uncertainty in the atmospheric circulation response to warming, by analysing the behaviour of the storms (or extratropical cyclones) themselves, projections of change in the number of the most intensely precipitating extratropical cyclones are substantial and consistent across models. In particular, we show large increases in the frequency of extreme extratropical cyclones (those above the present day 99th percentile of precipitation intensity) by the end of the century. In both Europe and North America, these intensely precipitating extratropical cyclones are projected to more than triple in number by the end of the century unless greenhouse gas emissions are mitigated. Such changes in extratropical cyclone behaviour may have major impacts on society given intensely precipitating extratropical cyclones are responsible for many large-scale flooding events, and associated severe economic losses, in these regions.https://doi.org/10.1088/1748-9326/aaed59climateclimate changeprecipitationclimate modelsCMIP5climate impacts
spellingShingle Matt Hawcroft
Ella Walsh
Kevin Hodges
Giuseppe Zappa
Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones
Environmental Research Letters
climate
climate change
precipitation
climate models
CMIP5
climate impacts
title Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones
title_full Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones
title_fullStr Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones
title_full_unstemmed Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones
title_short Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones
title_sort significantly increased extreme precipitation expected in europe and north america from extratropical cyclones
topic climate
climate change
precipitation
climate models
CMIP5
climate impacts
url https://doi.org/10.1088/1748-9326/aaed59
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AT giuseppezappa significantlyincreasedextremeprecipitationexpectedineuropeandnorthamericafromextratropicalcyclones