Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone
Abstract Ice-albedo feedback due to the albedo contrast between water and ice is a major factor in seasonal sea ice retreat, and has received increasing attention with the Arctic Ocean shifting to a seasonal ice cover. However, quantitative evaluation of such feedbacks is still insufficient. Here we...
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ftdoajarticles:oai:doaj.org/article:845d663f1df24bc397b513047721d59c 2023-05-15T13:10:27+02:00 Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone Haruhiko Kashiwase Kay I. Ohshima Sohey Nihashi Hajo Eicken 2017-08-01T00:00:00Z https://doi.org/10.1038/s41598-017-08467-z https://doaj.org/article/845d663f1df24bc397b513047721d59c EN eng Nature Portfolio https://doi.org/10.1038/s41598-017-08467-z https://doaj.org/toc/2045-2322 doi:10.1038/s41598-017-08467-z 2045-2322 https://doaj.org/article/845d663f1df24bc397b513047721d59c Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017) Medicine R Science Q article 2017 ftdoajarticles https://doi.org/10.1038/s41598-017-08467-z 2022-12-31T11:21:08Z Abstract Ice-albedo feedback due to the albedo contrast between water and ice is a major factor in seasonal sea ice retreat, and has received increasing attention with the Arctic Ocean shifting to a seasonal ice cover. However, quantitative evaluation of such feedbacks is still insufficient. Here we provide quantitative evidence that heat input through the open water fraction is the primary driver of seasonal and interannual variations in Arctic sea ice retreat. Analyses of satellite data (1979–2014) and a simplified ice-upper ocean coupled model reveal that divergent ice motion in the early melt season triggers large-scale feedback which subsequently amplifies summer sea ice anomalies. The magnitude of divergence controlling the feedback has doubled since 2000 due to a more mobile ice cover, which can partly explain the recent drastic ice reduction in the Arctic Ocean. Article in Journal/Newspaper albedo Arctic Arctic Ocean Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Scientific Reports 7 1 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
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Medicine R Science Q |
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Medicine R Science Q Haruhiko Kashiwase Kay I. Ohshima Sohey Nihashi Hajo Eicken Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone |
topic_facet |
Medicine R Science Q |
description |
Abstract Ice-albedo feedback due to the albedo contrast between water and ice is a major factor in seasonal sea ice retreat, and has received increasing attention with the Arctic Ocean shifting to a seasonal ice cover. However, quantitative evaluation of such feedbacks is still insufficient. Here we provide quantitative evidence that heat input through the open water fraction is the primary driver of seasonal and interannual variations in Arctic sea ice retreat. Analyses of satellite data (1979–2014) and a simplified ice-upper ocean coupled model reveal that divergent ice motion in the early melt season triggers large-scale feedback which subsequently amplifies summer sea ice anomalies. The magnitude of divergence controlling the feedback has doubled since 2000 due to a more mobile ice cover, which can partly explain the recent drastic ice reduction in the Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Haruhiko Kashiwase Kay I. Ohshima Sohey Nihashi Hajo Eicken |
author_facet |
Haruhiko Kashiwase Kay I. Ohshima Sohey Nihashi Hajo Eicken |
author_sort |
Haruhiko Kashiwase |
title |
Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone |
title_short |
Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone |
title_full |
Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone |
title_fullStr |
Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone |
title_full_unstemmed |
Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone |
title_sort |
evidence for ice-ocean albedo feedback in the arctic ocean shifting to a seasonal ice zone |
publisher |
Nature Portfolio |
publishDate |
2017 |
url |
https://doi.org/10.1038/s41598-017-08467-z https://doaj.org/article/845d663f1df24bc397b513047721d59c |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
albedo Arctic Arctic Ocean Sea ice |
genre_facet |
albedo Arctic Arctic Ocean Sea ice |
op_source |
Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017) |
op_relation |
https://doi.org/10.1038/s41598-017-08467-z https://doaj.org/toc/2045-2322 doi:10.1038/s41598-017-08467-z 2045-2322 https://doaj.org/article/845d663f1df24bc397b513047721d59c |
op_doi |
https://doi.org/10.1038/s41598-017-08467-z |
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Scientific Reports |
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7 |
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1 |
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1766230514214109184 |