Atmospheric feedback explains disparate climate response to regional Arctic sea-ice loss

Abstract Arctic sea-ice loss is a consequence of anthropogenic global warming and can itself be a driver of climate change in the Arctic and at lower latitudes, with sea-ice minima likely favoring extreme events over Europe and North America. Yet the role that the sea-ice plays in ongoing climate ch...

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Main Authors: Xavier J. Levine, Ivana Cvijanovic, Pablo Ortega, Markus G. Donat, Etienne Tourigny
Format: Article
Language:English
Published: Nature Portfolio 2021-05-01
Series:npj Climate and Atmospheric Science
Online Access:https://doi.org/10.1038/s41612-021-00183-w
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author Xavier J. Levine
Ivana Cvijanovic
Pablo Ortega
Markus G. Donat
Etienne Tourigny
author_facet Xavier J. Levine
Ivana Cvijanovic
Pablo Ortega
Markus G. Donat
Etienne Tourigny
author_sort Xavier J. Levine
collection DOAJ
description Abstract Arctic sea-ice loss is a consequence of anthropogenic global warming and can itself be a driver of climate change in the Arctic and at lower latitudes, with sea-ice minima likely favoring extreme events over Europe and North America. Yet the role that the sea-ice plays in ongoing climate change remains uncertain, partly due to a limited understanding of whether and how the exact geographical distribution of sea-ice loss impacts climate. Here we demonstrate that the climate response to sea-ice loss can vary widely depending on the pattern of sea-ice change, and show that this is due to the presence of an atmospheric feedback mechanism that amplifies the local and remote signals when broader scale sea-ice loss occurs. Our study thus highlights the need to better constrain the spatial pattern of future sea-ice when assessing its impacts on the climate in the Arctic and beyond.
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spelling doaj.art-3b31bb24e7b04c8898e321f8764c7e6d2022-12-21T19:44:47ZengNature Portfolionpj Climate and Atmospheric Science2397-37222021-05-01411810.1038/s41612-021-00183-wAtmospheric feedback explains disparate climate response to regional Arctic sea-ice lossXavier J. Levine0Ivana Cvijanovic1Pablo Ortega2Markus G. Donat3Etienne Tourigny4Earth Sciences Department, Barcelona Supercomputing CenterEarth Sciences Department, Barcelona Supercomputing CenterEarth Sciences Department, Barcelona Supercomputing CenterEarth Sciences Department, Barcelona Supercomputing CenterEarth Sciences Department, Barcelona Supercomputing CenterAbstract Arctic sea-ice loss is a consequence of anthropogenic global warming and can itself be a driver of climate change in the Arctic and at lower latitudes, with sea-ice minima likely favoring extreme events over Europe and North America. Yet the role that the sea-ice plays in ongoing climate change remains uncertain, partly due to a limited understanding of whether and how the exact geographical distribution of sea-ice loss impacts climate. Here we demonstrate that the climate response to sea-ice loss can vary widely depending on the pattern of sea-ice change, and show that this is due to the presence of an atmospheric feedback mechanism that amplifies the local and remote signals when broader scale sea-ice loss occurs. Our study thus highlights the need to better constrain the spatial pattern of future sea-ice when assessing its impacts on the climate in the Arctic and beyond.https://doi.org/10.1038/s41612-021-00183-w
spellingShingle Xavier J. Levine
Ivana Cvijanovic
Pablo Ortega
Markus G. Donat
Etienne Tourigny
Atmospheric feedback explains disparate climate response to regional Arctic sea-ice loss
npj Climate and Atmospheric Science
title Atmospheric feedback explains disparate climate response to regional Arctic sea-ice loss
title_full Atmospheric feedback explains disparate climate response to regional Arctic sea-ice loss
title_fullStr Atmospheric feedback explains disparate climate response to regional Arctic sea-ice loss
title_full_unstemmed Atmospheric feedback explains disparate climate response to regional Arctic sea-ice loss
title_short Atmospheric feedback explains disparate climate response to regional Arctic sea-ice loss
title_sort atmospheric feedback explains disparate climate response to regional arctic sea ice loss
url https://doi.org/10.1038/s41612-021-00183-w
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