Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble
To examine the atmospheric responses to Arctic sea ice variability in the Northern Hemisphere cold season (from October to the following March), this study uses a coordinated set of large-ensemble experiments of nine atmospheric general circulation models (AGCMs) forced with observed daily varying s...
Published in: | Journal of Climate |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/534074/ https://nora.nerc.ac.uk/id/eprint/534074/1/1520-0442-JCLI-D-20-0578.1.pdf https://doi.org/10.1175/JCLI-D-20-0578.1 |
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ftnerc:oai:nora.nerc.ac.uk:534074 2023-05-15T14:27:47+02:00 Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble Liang, Yu-Chiao Frankignoul, Claude Kwon, Young-Oh Gastineau, Guillaume Manzini, Elisa Danabasoglu, Gokhan Suo, Lingling Yeager, Stephen Gao, Yongqi Attema, Jisk J. Cherchi, Annalisa Ghosh, Rohit Matei, Daniela Mecking, Jennifer V. Tian, Tian Zhang, Ying 2021-09-24 text http://nora.nerc.ac.uk/id/eprint/534074/ https://nora.nerc.ac.uk/id/eprint/534074/1/1520-0442-JCLI-D-20-0578.1.pdf https://doi.org/10.1175/JCLI-D-20-0578.1 en eng https://nora.nerc.ac.uk/id/eprint/534074/1/1520-0442-JCLI-D-20-0578.1.pdf Liang, Yu-Chiao; Frankignoul, Claude; Kwon, Young-Oh; Gastineau, Guillaume; Manzini, Elisa; Danabasoglu, Gokhan; Suo, Lingling; Yeager, Stephen; Gao, Yongqi; Attema, Jisk J.; Cherchi, Annalisa; Ghosh, Rohit; Matei, Daniela; Mecking, Jennifer V.; Tian, Tian; Zhang, Ying. 2021 Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble. Journal of Climate. 1-64. https://doi.org/10.1175/JCLI-D-20-0578.1 <https://doi.org/10.1175/JCLI-D-20-0578.1> Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1175/JCLI-D-20-0578.1 2023-02-24T00:02:04Z To examine the atmospheric responses to Arctic sea ice variability in the Northern Hemisphere cold season (from October to the following March), this study uses a coordinated set of large-ensemble experiments of nine atmospheric general circulation models (AGCMs) forced with observed daily varying sea ice, sea surface temperature, and radiative forcings prescribed during the 1979–2014 period, together with a parallel set of experiments where Arctic sea ice is substituted by its climatology. The simulations of the former set reproduce the near-surface temperature trends in reanalysis data, with similar amplitude, and their multimodel ensemble mean (MMEM) shows decreasing sea level pressure over much of the polar cap and Eurasia in boreal autumn. The MMEM difference between the two experiments allows isolating the effects of Arctic sea ice loss, which explain a large portion of the Arctic warming trends in the lower troposphere and drive a small but statistically significant weakening of the wintertime Arctic Oscillation. The observed interannual covariability between sea ice extent in the Barents–Kara Seas and lagged atmospheric circulation is distinguished from the effects of confounding factors based on multiple regression, and quantitatively compared to the covariability in MMEMs. The interannual sea ice decline followed by a negative North Atlantic Oscillation–like anomaly found in observations is also seen in the MMEM differences, with consistent spatial structure but much smaller amplitude. This result suggests that the sea ice impacts on trends and interannual atmospheric variability simulated by AGCMs could be underestimated, but caution is needed because internal atmospheric variability may have affected the observed relationship. Article in Journal/Newspaper Arctic Arctic North Atlantic North Atlantic oscillation Sea ice Natural Environment Research Council: NERC Open Research Archive Arctic Journal of Climate 1 64 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
To examine the atmospheric responses to Arctic sea ice variability in the Northern Hemisphere cold season (from October to the following March), this study uses a coordinated set of large-ensemble experiments of nine atmospheric general circulation models (AGCMs) forced with observed daily varying sea ice, sea surface temperature, and radiative forcings prescribed during the 1979–2014 period, together with a parallel set of experiments where Arctic sea ice is substituted by its climatology. The simulations of the former set reproduce the near-surface temperature trends in reanalysis data, with similar amplitude, and their multimodel ensemble mean (MMEM) shows decreasing sea level pressure over much of the polar cap and Eurasia in boreal autumn. The MMEM difference between the two experiments allows isolating the effects of Arctic sea ice loss, which explain a large portion of the Arctic warming trends in the lower troposphere and drive a small but statistically significant weakening of the wintertime Arctic Oscillation. The observed interannual covariability between sea ice extent in the Barents–Kara Seas and lagged atmospheric circulation is distinguished from the effects of confounding factors based on multiple regression, and quantitatively compared to the covariability in MMEMs. The interannual sea ice decline followed by a negative North Atlantic Oscillation–like anomaly found in observations is also seen in the MMEM differences, with consistent spatial structure but much smaller amplitude. This result suggests that the sea ice impacts on trends and interannual atmospheric variability simulated by AGCMs could be underestimated, but caution is needed because internal atmospheric variability may have affected the observed relationship. |
format |
Article in Journal/Newspaper |
author |
Liang, Yu-Chiao Frankignoul, Claude Kwon, Young-Oh Gastineau, Guillaume Manzini, Elisa Danabasoglu, Gokhan Suo, Lingling Yeager, Stephen Gao, Yongqi Attema, Jisk J. Cherchi, Annalisa Ghosh, Rohit Matei, Daniela Mecking, Jennifer V. Tian, Tian Zhang, Ying |
spellingShingle |
Liang, Yu-Chiao Frankignoul, Claude Kwon, Young-Oh Gastineau, Guillaume Manzini, Elisa Danabasoglu, Gokhan Suo, Lingling Yeager, Stephen Gao, Yongqi Attema, Jisk J. Cherchi, Annalisa Ghosh, Rohit Matei, Daniela Mecking, Jennifer V. Tian, Tian Zhang, Ying Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble |
author_facet |
Liang, Yu-Chiao Frankignoul, Claude Kwon, Young-Oh Gastineau, Guillaume Manzini, Elisa Danabasoglu, Gokhan Suo, Lingling Yeager, Stephen Gao, Yongqi Attema, Jisk J. Cherchi, Annalisa Ghosh, Rohit Matei, Daniela Mecking, Jennifer V. Tian, Tian Zhang, Ying |
author_sort |
Liang, Yu-Chiao |
title |
Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble |
title_short |
Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble |
title_full |
Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble |
title_fullStr |
Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble |
title_full_unstemmed |
Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble |
title_sort |
impacts of arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/534074/ https://nora.nerc.ac.uk/id/eprint/534074/1/1520-0442-JCLI-D-20-0578.1.pdf https://doi.org/10.1175/JCLI-D-20-0578.1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic Arctic North Atlantic North Atlantic oscillation Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/534074/1/1520-0442-JCLI-D-20-0578.1.pdf Liang, Yu-Chiao; Frankignoul, Claude; Kwon, Young-Oh; Gastineau, Guillaume; Manzini, Elisa; Danabasoglu, Gokhan; Suo, Lingling; Yeager, Stephen; Gao, Yongqi; Attema, Jisk J.; Cherchi, Annalisa; Ghosh, Rohit; Matei, Daniela; Mecking, Jennifer V.; Tian, Tian; Zhang, Ying. 2021 Impacts of Arctic sea ice on cold season atmospheric variability and trends estimated from observations and a multi-model large ensemble. Journal of Climate. 1-64. https://doi.org/10.1175/JCLI-D-20-0578.1 <https://doi.org/10.1175/JCLI-D-20-0578.1> |
op_doi |
https://doi.org/10.1175/JCLI-D-20-0578.1 |
container_title |
Journal of Climate |
container_start_page |
1 |
op_container_end_page |
64 |
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1766301692419112960 |