Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss
Rapid changes in the Arctic have been observed and are expected to be amplified in future. However, the influence of Arctic sea-ice decline on global climate remains under debate. We focus on a modeling analysis of the ocean-atmosphere responses to a near-term Arctic sea-ice loss (corresponding to t...
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ftdatacite:10.5281/zenodo.3706584 2023-05-15T13:10:52+02:00 Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss Amelie, Simon Gastineau, Guillaume Frankignoul, Claude Codron, Francis 2020 https://dx.doi.org/10.5281/zenodo.3706584 https://zenodo.org/record/3706584 unknown Zenodo https://dx.doi.org/10.5281/zenodo.3706583 Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY Text Presentation article-journal ScholarlyArticle 2020 ftdatacite https://doi.org/10.5281/zenodo.3706584 https://doi.org/10.5281/zenodo.3706583 2021-11-05T12:55:41Z Rapid changes in the Arctic have been observed and are expected to be amplified in future. However, the influence of Arctic sea-ice decline on global climate remains under debate. We focus on a modeling analysis of the ocean-atmosphere responses to a near-term Arctic sea-ice loss (corresponding to the period 2035-2055 under the RCP8.5 scenario). With the coupled model IPSL-CM5A2, two different methods to melt Arctic sea-ice are implemented to estimate the robustness of the protocol. We will show that modifying the albedo or changing the thermal conductivity of the Arctic sea-ice show similar pattern responses but with different magnitude. It is also found that, at the 10% significance level, Arctic sea-ice decline leads to large-scale circulation responses such as a negative North Atlantic Oscillation (NAO) associated with southward shift of the westerlies; an expansion north of the North Atlantic current; a weaker Atlantic Meridional Overturning Circulation (AMOC) linked to a shallower mix layer depth at subpolar North Atlantic deep-convection site; a southward shift of the Intertropical Convergence Zone (ITCZ); a tropical Pacific cooling and a positive Southern Annular Mode (SAM). Conference Object albedo Arctic north atlantic current North Atlantic North Atlantic oscillation Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Pacific |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Rapid changes in the Arctic have been observed and are expected to be amplified in future. However, the influence of Arctic sea-ice decline on global climate remains under debate. We focus on a modeling analysis of the ocean-atmosphere responses to a near-term Arctic sea-ice loss (corresponding to the period 2035-2055 under the RCP8.5 scenario). With the coupled model IPSL-CM5A2, two different methods to melt Arctic sea-ice are implemented to estimate the robustness of the protocol. We will show that modifying the albedo or changing the thermal conductivity of the Arctic sea-ice show similar pattern responses but with different magnitude. It is also found that, at the 10% significance level, Arctic sea-ice decline leads to large-scale circulation responses such as a negative North Atlantic Oscillation (NAO) associated with southward shift of the westerlies; an expansion north of the North Atlantic current; a weaker Atlantic Meridional Overturning Circulation (AMOC) linked to a shallower mix layer depth at subpolar North Atlantic deep-convection site; a southward shift of the Intertropical Convergence Zone (ITCZ); a tropical Pacific cooling and a positive Southern Annular Mode (SAM). |
format |
Conference Object |
author |
Amelie, Simon Gastineau, Guillaume Frankignoul, Claude Codron, Francis |
spellingShingle |
Amelie, Simon Gastineau, Guillaume Frankignoul, Claude Codron, Francis Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss |
author_facet |
Amelie, Simon Gastineau, Guillaume Frankignoul, Claude Codron, Francis |
author_sort |
Amelie, Simon |
title |
Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss |
title_short |
Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss |
title_full |
Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss |
title_fullStr |
Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss |
title_full_unstemmed |
Near-term and Large-scale Coupled Climate System Responses to Arctic Sea-ice Loss |
title_sort |
near-term and large-scale coupled climate system responses to arctic sea-ice loss |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://dx.doi.org/10.5281/zenodo.3706584 https://zenodo.org/record/3706584 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
albedo Arctic north atlantic current North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
albedo Arctic north atlantic current North Atlantic North Atlantic oscillation Sea ice |
op_relation |
https://dx.doi.org/10.5281/zenodo.3706583 |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.3706584 https://doi.org/10.5281/zenodo.3706583 |
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1766245055529484288 |