Influence of Arctic sea-ice loss on the Greenland ice sheet climate
The Arctic is the region on Earth that is warming the fastest. At the same time, Arctic sea ice is reducing while the Greenland ice sheet (GrIS) is losing mass at an accelerated pace. Here, we study the seasonal impact of reduced Arctic sea ice on GrIS surface mass balance (SMB), using the Community...
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ftpubmed:oai:pubmedcentral.nih.gov:8791894 2023-05-15T13:11:14+02:00 Influence of Arctic sea-ice loss on the Greenland ice sheet climate Sellevold, Raymond Lenaerts, Jan T. M. Vizcaino, Miren 2021-07-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8791894/ https://doi.org/10.1007/s00382-021-05897-4 en eng Springer Berlin Heidelberg http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8791894/ http://dx.doi.org/10.1007/s00382-021-05897-4 © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Clim Dyn Article Text 2021 ftpubmed https://doi.org/10.1007/s00382-021-05897-4 2022-02-06T01:54:14Z The Arctic is the region on Earth that is warming the fastest. At the same time, Arctic sea ice is reducing while the Greenland ice sheet (GrIS) is losing mass at an accelerated pace. Here, we study the seasonal impact of reduced Arctic sea ice on GrIS surface mass balance (SMB), using the Community Earth System Model version 2.1 (CESM2), which features an advanced, interactive calculation of SMB. Addressing the impact of sea-ice reductions on the GrIS SMB from observations is difficult due to the short observational records. Also, signals detected using transient climate simulations may be aliases of other forcings. Here, we analyze dedicated simulations from the Polar Amplification Model Intercomparison Project with reduced Arctic sea ice and compare them with preindustrial sea ice simulations while keeping all other forcings constant. In response to reduced sea ice, the GrIS SMB increases in winter due to increased precipitation, driven by the more humid atmosphere and increasing cyclones. In summer, surface melt increases due to a warmer, more humid atmosphere providing increased energy transfer to the surface through the sensible and latent heat fluxes, which triggers the melt-albedo feedback. Further, warming occurs throughout the entire troposphere over Baffin Bay. This deep warming results in regional enhancement of the 500 hPa geopotential heights over the Baffin Bay and Greenland, increasing blocking and heat advection over the GrIS’ surface. This anomalous circulation pattern has been linked to recent increases in the surface melt of the GrIS. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00382-021-05897-4. Text albedo Arctic Baffin Bay Baffin Bay Baffin Greenland Ice Sheet Sea ice PubMed Central (PMC) Arctic Baffin Bay Greenland Climate Dynamics 58 1-2 179 193 |
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Article Sellevold, Raymond Lenaerts, Jan T. M. Vizcaino, Miren Influence of Arctic sea-ice loss on the Greenland ice sheet climate |
topic_facet |
Article |
description |
The Arctic is the region on Earth that is warming the fastest. At the same time, Arctic sea ice is reducing while the Greenland ice sheet (GrIS) is losing mass at an accelerated pace. Here, we study the seasonal impact of reduced Arctic sea ice on GrIS surface mass balance (SMB), using the Community Earth System Model version 2.1 (CESM2), which features an advanced, interactive calculation of SMB. Addressing the impact of sea-ice reductions on the GrIS SMB from observations is difficult due to the short observational records. Also, signals detected using transient climate simulations may be aliases of other forcings. Here, we analyze dedicated simulations from the Polar Amplification Model Intercomparison Project with reduced Arctic sea ice and compare them with preindustrial sea ice simulations while keeping all other forcings constant. In response to reduced sea ice, the GrIS SMB increases in winter due to increased precipitation, driven by the more humid atmosphere and increasing cyclones. In summer, surface melt increases due to a warmer, more humid atmosphere providing increased energy transfer to the surface through the sensible and latent heat fluxes, which triggers the melt-albedo feedback. Further, warming occurs throughout the entire troposphere over Baffin Bay. This deep warming results in regional enhancement of the 500 hPa geopotential heights over the Baffin Bay and Greenland, increasing blocking and heat advection over the GrIS’ surface. This anomalous circulation pattern has been linked to recent increases in the surface melt of the GrIS. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00382-021-05897-4. |
format |
Text |
author |
Sellevold, Raymond Lenaerts, Jan T. M. Vizcaino, Miren |
author_facet |
Sellevold, Raymond Lenaerts, Jan T. M. Vizcaino, Miren |
author_sort |
Sellevold, Raymond |
title |
Influence of Arctic sea-ice loss on the Greenland ice sheet climate |
title_short |
Influence of Arctic sea-ice loss on the Greenland ice sheet climate |
title_full |
Influence of Arctic sea-ice loss on the Greenland ice sheet climate |
title_fullStr |
Influence of Arctic sea-ice loss on the Greenland ice sheet climate |
title_full_unstemmed |
Influence of Arctic sea-ice loss on the Greenland ice sheet climate |
title_sort |
influence of arctic sea-ice loss on the greenland ice sheet climate |
publisher |
Springer Berlin Heidelberg |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8791894/ https://doi.org/10.1007/s00382-021-05897-4 |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
albedo Arctic Baffin Bay Baffin Bay Baffin Greenland Ice Sheet Sea ice |
genre_facet |
albedo Arctic Baffin Bay Baffin Bay Baffin Greenland Ice Sheet Sea ice |
op_source |
Clim Dyn |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8791894/ http://dx.doi.org/10.1007/s00382-021-05897-4 |
op_rights |
© The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00382-021-05897-4 |
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Climate Dynamics |
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