Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers
The sea-ice cover in the Barents and Kara Seas (BKS) displays pronounced interannual variability. Both atmospheric and oceanic drivers have been found to influence sea-ice variability, but their relative strength and regional importance remain under debate. Here, we use the Liang-Kleeman information...
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2024
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Online Access: | http://dx.doi.org/10.22541/essoar.170534002.24175178/v1 |
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crwinnower:10.22541/essoar.170534002.24175178/v1 2024-06-02T08:04:08+00:00 Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers Dörr, Jakob Årthun, Marius Docquier, David Li, Camille Eldevik, Tor 2024 http://dx.doi.org/10.22541/essoar.170534002.24175178/v1 unknown Authorea, Inc. posted-content 2024 crwinnower https://doi.org/10.22541/essoar.170534002.24175178/v1 2024-05-07T14:19:16Z The sea-ice cover in the Barents and Kara Seas (BKS) displays pronounced interannual variability. Both atmospheric and oceanic drivers have been found to influence sea-ice variability, but their relative strength and regional importance remain under debate. Here, we use the Liang-Kleeman information flow method to quantify the causal influence of oceanic and atmospheric drivers on the annual sea-ice cover in the BKS in the Community Earth System Model large ensemble and reanalysis. We find that atmospheric drivers dominate in the northern part, ocean heat transport dominates in the central and northeastern part, and local sea-surface temperature dominates in the southern part. Furthermore, the large-scale atmospheric circulation over the Nordic Seas drives ocean heat transport into the Barents Sea, which then influences sea ice. Under future sea-ice retreat, the atmospheric drivers are expected to become more important. Other/Unknown Material Barents Sea Nordic Seas Sea ice The Winnower Barents Sea |
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Open Polar |
collection |
The Winnower |
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crwinnower |
language |
unknown |
description |
The sea-ice cover in the Barents and Kara Seas (BKS) displays pronounced interannual variability. Both atmospheric and oceanic drivers have been found to influence sea-ice variability, but their relative strength and regional importance remain under debate. Here, we use the Liang-Kleeman information flow method to quantify the causal influence of oceanic and atmospheric drivers on the annual sea-ice cover in the BKS in the Community Earth System Model large ensemble and reanalysis. We find that atmospheric drivers dominate in the northern part, ocean heat transport dominates in the central and northeastern part, and local sea-surface temperature dominates in the southern part. Furthermore, the large-scale atmospheric circulation over the Nordic Seas drives ocean heat transport into the Barents Sea, which then influences sea ice. Under future sea-ice retreat, the atmospheric drivers are expected to become more important. |
format |
Other/Unknown Material |
author |
Dörr, Jakob Årthun, Marius Docquier, David Li, Camille Eldevik, Tor |
spellingShingle |
Dörr, Jakob Årthun, Marius Docquier, David Li, Camille Eldevik, Tor Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers |
author_facet |
Dörr, Jakob Årthun, Marius Docquier, David Li, Camille Eldevik, Tor |
author_sort |
Dörr, Jakob |
title |
Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers |
title_short |
Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers |
title_full |
Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers |
title_fullStr |
Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers |
title_full_unstemmed |
Causal links between sea-ice variability in the Barents-Kara Seas and oceanic and atmospheric drivers |
title_sort |
causal links between sea-ice variability in the barents-kara seas and oceanic and atmospheric drivers |
publisher |
Authorea, Inc. |
publishDate |
2024 |
url |
http://dx.doi.org/10.22541/essoar.170534002.24175178/v1 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Nordic Seas Sea ice |
genre_facet |
Barents Sea Nordic Seas Sea ice |
op_doi |
https://doi.org/10.22541/essoar.170534002.24175178/v1 |
_version_ |
1800748781777453056 |