Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008
Abstract The area of Arctic winter sea ice growth (WSIG) has expanded dramatically since winter 2008. Yet the thermodynamic and dynamic contributions to the abrupt increase in WSIG remain unclear. Here using an ice concentration budget, we characterized quantitatively the increasing WSIG and reveale...
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Online Access: | http://dx.doi.org/10.1088/1748-9326/ad13b7 https://iopscience.iop.org/article/10.1088/1748-9326/ad13b7 https://iopscience.iop.org/article/10.1088/1748-9326/ad13b7/pdf |
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crioppubl:10.1088/1748-9326/ad13b7 2024-06-23T07:49:59+00:00 Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008 Yi, Daling Li Fan, Ke He, Shengping National Natural Science Foundation of China National Key Research and Development Program of China Research Council of Norway funded project Innovation Group Project of the Southern Marine Science and Engineering Guangdong Laboratory Natural Science Foundation of Guangdong Province 2023 http://dx.doi.org/10.1088/1748-9326/ad13b7 https://iopscience.iop.org/article/10.1088/1748-9326/ad13b7 https://iopscience.iop.org/article/10.1088/1748-9326/ad13b7/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 19, issue 1, page 014048 ISSN 1748-9326 journal-article 2023 crioppubl https://doi.org/10.1088/1748-9326/ad13b7 2024-06-10T04:10:51Z Abstract The area of Arctic winter sea ice growth (WSIG) has expanded dramatically since winter 2008. Yet the thermodynamic and dynamic contributions to the abrupt increase in WSIG remain unclear. Here using an ice concentration budget, we characterized quantitatively the increasing WSIG and revealed the relative contributions of dynamics during 1985–2021. Ice dynamics related to ice convergence/divergence are compared in two representative regions. The northern Laptev Sea is a freezing-dominated ice growth region and is competitively driven by the ice convergence. While in northwest Beaufort Gyre (BG), the combined effects of freezing and ice divergence have both enhanced since 2008, and the dynamics contribute 84% to the significant WSIG intensification since 2008. Comparison of thermodynamic and dynamic contributions emphasized that the winter sea-ice expansion is influenced not only by winter freeze, but also by convergence/divergence relative to newly formed thinner and mobile ice. Furthermore, the amplified summer Beaufort High in the mid-2000s and its long-lasting memory of the wind-driven strengthened BG are partially attributed to the abrupt increased WSIG since 2008. Article in Journal/Newspaper Arctic laptev Laptev Sea Sea ice IOP Publishing Arctic Laptev Sea Environmental Research Letters 19 1 014048 |
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Abstract The area of Arctic winter sea ice growth (WSIG) has expanded dramatically since winter 2008. Yet the thermodynamic and dynamic contributions to the abrupt increase in WSIG remain unclear. Here using an ice concentration budget, we characterized quantitatively the increasing WSIG and revealed the relative contributions of dynamics during 1985–2021. Ice dynamics related to ice convergence/divergence are compared in two representative regions. The northern Laptev Sea is a freezing-dominated ice growth region and is competitively driven by the ice convergence. While in northwest Beaufort Gyre (BG), the combined effects of freezing and ice divergence have both enhanced since 2008, and the dynamics contribute 84% to the significant WSIG intensification since 2008. Comparison of thermodynamic and dynamic contributions emphasized that the winter sea-ice expansion is influenced not only by winter freeze, but also by convergence/divergence relative to newly formed thinner and mobile ice. Furthermore, the amplified summer Beaufort High in the mid-2000s and its long-lasting memory of the wind-driven strengthened BG are partially attributed to the abrupt increased WSIG since 2008. |
author2 |
National Natural Science Foundation of China National Key Research and Development Program of China Research Council of Norway funded project Innovation Group Project of the Southern Marine Science and Engineering Guangdong Laboratory Natural Science Foundation of Guangdong Province |
format |
Article in Journal/Newspaper |
author |
Yi, Daling Li Fan, Ke He, Shengping |
spellingShingle |
Yi, Daling Li Fan, Ke He, Shengping Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008 |
author_facet |
Yi, Daling Li Fan, Ke He, Shengping |
author_sort |
Yi, Daling Li |
title |
Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008 |
title_short |
Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008 |
title_full |
Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008 |
title_fullStr |
Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008 |
title_full_unstemmed |
Thermodynamic and dynamic contributions to the abrupt increased winter Arctic sea ice growth since 2008 |
title_sort |
thermodynamic and dynamic contributions to the abrupt increased winter arctic sea ice growth since 2008 |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1088/1748-9326/ad13b7 https://iopscience.iop.org/article/10.1088/1748-9326/ad13b7 https://iopscience.iop.org/article/10.1088/1748-9326/ad13b7/pdf |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic laptev Laptev Sea Sea ice |
genre_facet |
Arctic laptev Laptev Sea Sea ice |
op_source |
Environmental Research Letters volume 19, issue 1, page 014048 ISSN 1748-9326 |
op_rights |
http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/ad13b7 |
container_title |
Environmental Research Letters |
container_volume |
19 |
container_issue |
1 |
container_start_page |
014048 |
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1802640730961739776 |