Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming

© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Sadai, S., Condron, A., DeConto, R., & Pollard, D. Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming. Science...

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Published in:Science Advances
Main Authors: Sadai, Shaina, Condron, Alan, DeConto, Robert M., Pollard, David
Format: Article in Journal/Newspaper
Language:unknown
Published: American Association for the Advancement of Science 2020
Subjects:
Online Access:https://hdl.handle.net/1912/26273
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spelling ftwhoas:oai:darchive.mblwhoilibrary.org:1912/26273 2023-05-15T13:48:31+02:00 Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming Sadai, Shaina Condron, Alan DeConto, Robert M. Pollard, David 2020-09-23 https://hdl.handle.net/1912/26273 unknown American Association for the Advancement of Science https://doi.org/10.1126/sciadv.aaz1169 Sadai, S., Condron, A., DeConto, R., & Pollard, D. (2020). Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming. Science Advances, 6(39), eaaz1169. https://hdl.handle.net/1912/26273 doi:10.1126/sciadv.aaz1169 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ CC-BY-NC Sadai, S., Condron, A., DeConto, R., & Pollard, D. (2020). Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming. Science Advances, 6(39), eaaz1169. doi:10.1126/sciadv.aaz1169 Article 2020 ftwhoas https://doi.org/10.1126/sciadv.aaz1169 2022-05-28T23:03:50Z © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Sadai, S., Condron, A., DeConto, R., & Pollard, D. Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming. Science Advances, 6(39), (2020): eaaz1169, doi:10.1126/sciadv.aaz1169. Meltwater and ice discharge from a retreating Antarctic Ice Sheet could have important impacts on future global climate. Here, we report on multi-century (present–2250) climate simulations performed using a coupled numerical model integrated under future greenhouse-gas emission scenarios IPCC RCP4.5 and RCP8.5, with meltwater and ice discharge provided by a dynamic-thermodynamic ice sheet model. Accounting for Antarctic discharge raises subsurface ocean temperatures by >1°C at the ice margin relative to simulations ignoring discharge. In contrast, expanded sea ice and 2° to 10°C cooler surface air and surface ocean temperatures in the Southern Ocean delay the increase of projected global mean anthropogenic warming through 2250. In addition, the projected loss of Arctic winter sea ice and weakening of the Atlantic Meridional Overturning Circulation are delayed by several decades. Our results demonstrate a need to accurately account for meltwater input from ice sheets in order to make confident climate predictions. This research was supported by the NSF Office of Polar Programs through NSF grant 1443347, the Biological and Environmental Research (BER) division of the U.S. Department of Energy through grant DE-SC0019263, the NSF through ICER 1664013, and by a grant to the NASA Sea Level Science Team 80NSSC17K0698. Article in Journal/Newspaper Antarc* Antarctic Arctic Ice Sheet Sea ice Southern Ocean Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Antarctic Southern Ocean Pollard ENVELOPE(64.617,64.617,-70.467,-70.467) Science Advances 6 39 eaaz1169
institution Open Polar
collection Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
op_collection_id ftwhoas
language unknown
description © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Sadai, S., Condron, A., DeConto, R., & Pollard, D. Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming. Science Advances, 6(39), (2020): eaaz1169, doi:10.1126/sciadv.aaz1169. Meltwater and ice discharge from a retreating Antarctic Ice Sheet could have important impacts on future global climate. Here, we report on multi-century (present–2250) climate simulations performed using a coupled numerical model integrated under future greenhouse-gas emission scenarios IPCC RCP4.5 and RCP8.5, with meltwater and ice discharge provided by a dynamic-thermodynamic ice sheet model. Accounting for Antarctic discharge raises subsurface ocean temperatures by >1°C at the ice margin relative to simulations ignoring discharge. In contrast, expanded sea ice and 2° to 10°C cooler surface air and surface ocean temperatures in the Southern Ocean delay the increase of projected global mean anthropogenic warming through 2250. In addition, the projected loss of Arctic winter sea ice and weakening of the Atlantic Meridional Overturning Circulation are delayed by several decades. Our results demonstrate a need to accurately account for meltwater input from ice sheets in order to make confident climate predictions. This research was supported by the NSF Office of Polar Programs through NSF grant 1443347, the Biological and Environmental Research (BER) division of the U.S. Department of Energy through grant DE-SC0019263, the NSF through ICER 1664013, and by a grant to the NASA Sea Level Science Team 80NSSC17K0698.
format Article in Journal/Newspaper
author Sadai, Shaina
Condron, Alan
DeConto, Robert M.
Pollard, David
spellingShingle Sadai, Shaina
Condron, Alan
DeConto, Robert M.
Pollard, David
Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming
author_facet Sadai, Shaina
Condron, Alan
DeConto, Robert M.
Pollard, David
author_sort Sadai, Shaina
title Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming
title_short Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming
title_full Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming
title_fullStr Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming
title_full_unstemmed Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming
title_sort future climate response to antarctic ice sheet melt caused by anthropogenic warming
publisher American Association for the Advancement of Science
publishDate 2020
url https://hdl.handle.net/1912/26273
long_lat ENVELOPE(64.617,64.617,-70.467,-70.467)
geographic Arctic
Antarctic
Southern Ocean
Pollard
geographic_facet Arctic
Antarctic
Southern Ocean
Pollard
genre Antarc*
Antarctic
Arctic
Ice Sheet
Sea ice
Southern Ocean
genre_facet Antarc*
Antarctic
Arctic
Ice Sheet
Sea ice
Southern Ocean
op_source Sadai, S., Condron, A., DeConto, R., & Pollard, D. (2020). Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming. Science Advances, 6(39), eaaz1169.
doi:10.1126/sciadv.aaz1169
op_relation https://doi.org/10.1126/sciadv.aaz1169
Sadai, S., Condron, A., DeConto, R., & Pollard, D. (2020). Future climate response to Antarctic Ice Sheet melt caused by anthropogenic warming. Science Advances, 6(39), eaaz1169.
https://hdl.handle.net/1912/26273
doi:10.1126/sciadv.aaz1169
op_rights Attribution-NonCommercial 4.0 International
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op_doi https://doi.org/10.1126/sciadv.aaz1169
container_title Science Advances
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container_issue 39
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