The emergence of a new wintertime Arctic energy balance regime
Abstract The modern Arctic climate during wintertime is characterized by sea-ice cover, a strong surface temperature inversion, and the absence of convection. Correspondingly, the energy balance in the Arctic atmosphere today is dominated by atmospheric radiative cooling and advective heating, so-ca...
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crioppubl:10.1088/2752-5295/aced63 2024-06-02T08:00:28+00:00 The emergence of a new wintertime Arctic energy balance regime Miyawaki, O Shaw, T A Jansen, M F National Science Foundation 2023 http://dx.doi.org/10.1088/2752-5295/aced63 https://iopscience.iop.org/article/10.1088/2752-5295/aced63 https://iopscience.iop.org/article/10.1088/2752-5295/aced63/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research: Climate volume 2, issue 3, page 031003 ISSN 2752-5295 journal-article 2023 crioppubl https://doi.org/10.1088/2752-5295/aced63 2024-05-07T13:56:43Z Abstract The modern Arctic climate during wintertime is characterized by sea-ice cover, a strong surface temperature inversion, and the absence of convection. Correspondingly, the energy balance in the Arctic atmosphere today is dominated by atmospheric radiative cooling and advective heating, so-called radiative advective equilibrium. Climate change in the Arctic involves sea-ice melt, vanishing of the surface inversion, and emergence of convective precipitation. Here we show climate change in the Arctic involves the emergence of a new energy balance regime characterized by radiative cooling, convective heating, and advective heating, so-called radiative convective advective equilibrium. A time-dependent decomposition of the atmospheric energy balance shows the regime transition is associated with enhanced radiative cooling followed by decreased advective heating. The radiative cooling response consists of a robust clear-sky greenhouse effect and a transient cloud contribution that varies across models. Mechanism-denial experiments in an aquaplanet with and without interactive sea ice highlight the important role of sea-ice melt in both the radiative cooling and advective heating responses. The results show that climate change in the Arctic involves temporally evolving mechanisms, suggesting that an emergent constraint based on historical data or trends may not constrain the long-term response. Article in Journal/Newspaper Arctic Climate change Sea ice IOP Publishing Arctic Environmental Research: Climate 2 3 031003 |
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Abstract The modern Arctic climate during wintertime is characterized by sea-ice cover, a strong surface temperature inversion, and the absence of convection. Correspondingly, the energy balance in the Arctic atmosphere today is dominated by atmospheric radiative cooling and advective heating, so-called radiative advective equilibrium. Climate change in the Arctic involves sea-ice melt, vanishing of the surface inversion, and emergence of convective precipitation. Here we show climate change in the Arctic involves the emergence of a new energy balance regime characterized by radiative cooling, convective heating, and advective heating, so-called radiative convective advective equilibrium. A time-dependent decomposition of the atmospheric energy balance shows the regime transition is associated with enhanced radiative cooling followed by decreased advective heating. The radiative cooling response consists of a robust clear-sky greenhouse effect and a transient cloud contribution that varies across models. Mechanism-denial experiments in an aquaplanet with and without interactive sea ice highlight the important role of sea-ice melt in both the radiative cooling and advective heating responses. The results show that climate change in the Arctic involves temporally evolving mechanisms, suggesting that an emergent constraint based on historical data or trends may not constrain the long-term response. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Miyawaki, O Shaw, T A Jansen, M F |
spellingShingle |
Miyawaki, O Shaw, T A Jansen, M F The emergence of a new wintertime Arctic energy balance regime |
author_facet |
Miyawaki, O Shaw, T A Jansen, M F |
author_sort |
Miyawaki, O |
title |
The emergence of a new wintertime Arctic energy balance regime |
title_short |
The emergence of a new wintertime Arctic energy balance regime |
title_full |
The emergence of a new wintertime Arctic energy balance regime |
title_fullStr |
The emergence of a new wintertime Arctic energy balance regime |
title_full_unstemmed |
The emergence of a new wintertime Arctic energy balance regime |
title_sort |
emergence of a new wintertime arctic energy balance regime |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1088/2752-5295/aced63 https://iopscience.iop.org/article/10.1088/2752-5295/aced63 https://iopscience.iop.org/article/10.1088/2752-5295/aced63/pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Sea ice |
genre_facet |
Arctic Climate change Sea ice |
op_source |
Environmental Research: Climate volume 2, issue 3, page 031003 ISSN 2752-5295 |
op_rights |
http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/2752-5295/aced63 |
container_title |
Environmental Research: Climate |
container_volume |
2 |
container_issue |
3 |
container_start_page |
031003 |
_version_ |
1800744493813596160 |