Delayed Antarctic melt season reduces albedo feedback
Antarctica's response to climate change varies greatly both spatially and temporally. Surface melting impacts mass balance and also lowers surface albedo. We use a 43-year record (from 1978 to 2020) of Antarctic snow melt seasons from space-borne microwave radiometers with a machine-learning al...
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ftpubmed:oai:pubmedcentral.nih.gov:10411670 2023-09-05T13:15:14+02:00 Delayed Antarctic melt season reduces albedo feedback Liang, Lei Guo, Huadong Liang, Shuang Li, Xichen Moore, John C Li, Xinwu Cheng, Xiao Wu, Wenjin Liu, Yan Rinke, Annette Jia, Gensuo Pan, Feifei Gong, Chen 2023-05-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10411670/ https://doi.org/10.1093/nsr/nwad157 en eng Oxford University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10411670/ http://dx.doi.org/10.1093/nsr/nwad157 © The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. Natl Sci Rev Research Article Text 2023 ftpubmed https://doi.org/10.1093/nsr/nwad157 2023-08-13T01:10:18Z Antarctica's response to climate change varies greatly both spatially and temporally. Surface melting impacts mass balance and also lowers surface albedo. We use a 43-year record (from 1978 to 2020) of Antarctic snow melt seasons from space-borne microwave radiometers with a machine-learning algorithm to show that both the onset and the end of the melt season are being delayed. Granger-causality analysis shows that melt end is delayed due to increased heat flux from the ocean to the atmosphere at minimum sea-ice extent from warming oceans. Melt onset is Granger-caused primarily by the turbulent heat flux from ocean to atmosphere that is in turn driven by sea-ice variability. Delayed snowmelt season leads to a net decrease in the absorption of solar irradiance, as a delayed summer means that higher albedo occurs after the period of maximum solar radiation, which changes Antarctica's radiation balance more than sea-ice cover. Text Antarc* Antarctic Sea ice PubMed Central (PMC) Antarctic National Science Review 10 9 |
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Research Article |
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Research Article Liang, Lei Guo, Huadong Liang, Shuang Li, Xichen Moore, John C Li, Xinwu Cheng, Xiao Wu, Wenjin Liu, Yan Rinke, Annette Jia, Gensuo Pan, Feifei Gong, Chen Delayed Antarctic melt season reduces albedo feedback |
topic_facet |
Research Article |
description |
Antarctica's response to climate change varies greatly both spatially and temporally. Surface melting impacts mass balance and also lowers surface albedo. We use a 43-year record (from 1978 to 2020) of Antarctic snow melt seasons from space-borne microwave radiometers with a machine-learning algorithm to show that both the onset and the end of the melt season are being delayed. Granger-causality analysis shows that melt end is delayed due to increased heat flux from the ocean to the atmosphere at minimum sea-ice extent from warming oceans. Melt onset is Granger-caused primarily by the turbulent heat flux from ocean to atmosphere that is in turn driven by sea-ice variability. Delayed snowmelt season leads to a net decrease in the absorption of solar irradiance, as a delayed summer means that higher albedo occurs after the period of maximum solar radiation, which changes Antarctica's radiation balance more than sea-ice cover. |
format |
Text |
author |
Liang, Lei Guo, Huadong Liang, Shuang Li, Xichen Moore, John C Li, Xinwu Cheng, Xiao Wu, Wenjin Liu, Yan Rinke, Annette Jia, Gensuo Pan, Feifei Gong, Chen |
author_facet |
Liang, Lei Guo, Huadong Liang, Shuang Li, Xichen Moore, John C Li, Xinwu Cheng, Xiao Wu, Wenjin Liu, Yan Rinke, Annette Jia, Gensuo Pan, Feifei Gong, Chen |
author_sort |
Liang, Lei |
title |
Delayed Antarctic melt season reduces albedo feedback |
title_short |
Delayed Antarctic melt season reduces albedo feedback |
title_full |
Delayed Antarctic melt season reduces albedo feedback |
title_fullStr |
Delayed Antarctic melt season reduces albedo feedback |
title_full_unstemmed |
Delayed Antarctic melt season reduces albedo feedback |
title_sort |
delayed antarctic melt season reduces albedo feedback |
publisher |
Oxford University Press |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10411670/ https://doi.org/10.1093/nsr/nwad157 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
Natl Sci Rev |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10411670/ http://dx.doi.org/10.1093/nsr/nwad157 |
op_rights |
© The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_doi |
https://doi.org/10.1093/nsr/nwad157 |
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National Science Review |
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10 |
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9 |
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1776197043253936128 |