Projected changes in atmospheric rivers affecting Europe in CMIP5 models

Abstract Atmospheric Rivers (ARs) are elongated bands of high water vapor concentration extending to the midlatitudes, which can be associated with intense precipitation and floods over continental areas. We analyze ARs reaching Europe in simulations from six Coupled Model Intercomparison Project Ph...

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Main Authors: Alexandre M. Ramos, Ricardo Tomé, Ricardo M. Trigo, Margarida L. R. Liberato, Joaquim G. Pinto
Format: Article
Language:English
Published: Wiley 2016-09-01
Series:Geophysical Research Letters
Subjects:
Online Access:https://doi.org/10.1002/2016GL070634
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author Alexandre M. Ramos
Ricardo Tomé
Ricardo M. Trigo
Margarida L. R. Liberato
Joaquim G. Pinto
author_facet Alexandre M. Ramos
Ricardo Tomé
Ricardo M. Trigo
Margarida L. R. Liberato
Joaquim G. Pinto
author_sort Alexandre M. Ramos
collection DOAJ
description Abstract Atmospheric Rivers (ARs) are elongated bands of high water vapor concentration extending to the midlatitudes, which can be associated with intense precipitation and floods over continental areas. We analyze ARs reaching Europe in simulations from six Coupled Model Intercomparison Project Phase 5 (CMIP5) global climate models (GCMs) to quantify possible changes during the current century, with emphasis in five western European prone coastal areas. ARs are represented reasonably well in GCMs for recent climate conditions (1980–2005). Increased vertically integrated horizontal water transport is found for 2074–2099 (RCP4.5 and RCP8.5) compared to 1980–2005, while the number of ARs is projected to double on average for the same period. These changes are robust between models and are associated with higher air temperatures and thus enhanced atmospheric moisture content, together with higher precipitation associated with extratropical cyclones. This suggests an increased risk of intense precipitation and floods along the Atlantic European Coasts from the Iberian Peninsula to Scandinavia.
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series Geophysical Research Letters
spelling doaj-art-26bb2ba101e848bfa8cdb8b3aed3da662025-08-20T03:10:24ZengWileyGeophysical Research Letters0094-82761944-80072016-09-0143179315932310.1002/2016GL070634Projected changes in atmospheric rivers affecting Europe in CMIP5 modelsAlexandre M. Ramos0Ricardo Tomé1Ricardo M. Trigo2Margarida L. R. Liberato3Joaquim G. Pinto4Instituto Dom Luiz, Faculdade de Ciências Universidade de Lisboa Lisbon PortugalInstituto Dom Luiz, Faculdade de Ciências Universidade de Lisboa Lisbon PortugalInstituto Dom Luiz, Faculdade de Ciências Universidade de Lisboa Lisbon PortugalInstituto Dom Luiz, Faculdade de Ciências Universidade de Lisboa Lisbon PortugalDepartment of Meteorology University of Reading Reading UKAbstract Atmospheric Rivers (ARs) are elongated bands of high water vapor concentration extending to the midlatitudes, which can be associated with intense precipitation and floods over continental areas. We analyze ARs reaching Europe in simulations from six Coupled Model Intercomparison Project Phase 5 (CMIP5) global climate models (GCMs) to quantify possible changes during the current century, with emphasis in five western European prone coastal areas. ARs are represented reasonably well in GCMs for recent climate conditions (1980–2005). Increased vertically integrated horizontal water transport is found for 2074–2099 (RCP4.5 and RCP8.5) compared to 1980–2005, while the number of ARs is projected to double on average for the same period. These changes are robust between models and are associated with higher air temperatures and thus enhanced atmospheric moisture content, together with higher precipitation associated with extratropical cyclones. This suggests an increased risk of intense precipitation and floods along the Atlantic European Coasts from the Iberian Peninsula to Scandinavia.https://doi.org/10.1002/2016GL070634Atmospheric Riversclimate projectionsEuropeCMIP5 modelsprecipitationextratropical cyclones
spellingShingle Alexandre M. Ramos
Ricardo Tomé
Ricardo M. Trigo
Margarida L. R. Liberato
Joaquim G. Pinto
Projected changes in atmospheric rivers affecting Europe in CMIP5 models
Geophysical Research Letters
Atmospheric Rivers
climate projections
Europe
CMIP5 models
precipitation
extratropical cyclones
title Projected changes in atmospheric rivers affecting Europe in CMIP5 models
title_full Projected changes in atmospheric rivers affecting Europe in CMIP5 models
title_fullStr Projected changes in atmospheric rivers affecting Europe in CMIP5 models
title_full_unstemmed Projected changes in atmospheric rivers affecting Europe in CMIP5 models
title_short Projected changes in atmospheric rivers affecting Europe in CMIP5 models
title_sort projected changes in atmospheric rivers affecting europe in cmip5 models
topic Atmospheric Rivers
climate projections
Europe
CMIP5 models
precipitation
extratropical cyclones
url https://doi.org/10.1002/2016GL070634
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