Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns
Source at https://doi.org/10.1007/s00382-018-4279-z . The declining trend of Arctic September sea ice constitutes a significant change in the Arctic climate system. Large yearto-year variations are superimposed on this sea–ice trend, with the largest variability observed in the eastern Arctic Ocean....
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Language: | English |
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Springer Verlag
2018
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Online Access: | https://hdl.handle.net/10037/14784 https://doi.org/10.1007/s00382-018-4279-z |
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ftunivtroemsoe:oai:munin.uit.no:10037/14784 2023-05-15T14:25:56+02:00 Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns Kapsch, Marie-Luise Skific, Natasa Graversen, Rune Tjernström, Michael Francis, Jennifer A. 2018-05-30 https://hdl.handle.net/10037/14784 https://doi.org/10.1007/s00382-018-4279-z eng eng Springer Verlag Climate Dynamics Kapsch, M.-L., Skific, N., Graversen, R. G., Tjernström, M. & Francis, J. A. (2018). Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns. https://doi.org/10.1007/s00382-018-4279-z. FRIDAID 1629923 doi:10.1007/s00382-018-4279-z 0930-7575 1432-0894 https://hdl.handle.net/10037/14784 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Climate variability Arctic sea ice Self organizing maps (SOMs) Atmospheric circulation Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1007/s00382-018-4279-z 2021-06-25T17:56:26Z Source at https://doi.org/10.1007/s00382-018-4279-z . The declining trend of Arctic September sea ice constitutes a significant change in the Arctic climate system. Large yearto-year variations are superimposed on this sea–ice trend, with the largest variability observed in the eastern Arctic Ocean. Knowledge of the processes important for this variability may lead to an improved understanding of seasonal and long-term changes. Previous studies suggest that transport of heat and moisture into the Arctic during spring enhances downward surface longwave radiation, thereby controlling the annual melt onset, setting the stage for the September ice minimum. In agreement with these studies, we find that years with a low September sea–ice concentration (SIC) are characterized by more persistent periods in spring with enhanced energy flux to the surface in forms of net longwave radiation plus turbulent fluxes, compared to years with a high SIC. Two main atmospheric circulation patterns related to these episodes are identified: one resembles the so-called Arctic dipole anomaly that promotes transport of heat and moisture from the North Pacific, whereas the other is characterized by negative geopotential height anomalies over the Arctic, favoring cyclonic flow from Siberia and the Kara Sea into the eastern Arctic Ocean. However, differences between years with low and high September SIC appear not to be due to different spring circulation patterns; instead it is the persistence and intensity of processes associated with these patterns that distinguish the two groups of anomalous years: Years with low September SIC feature episodes that are consistently stronger and more persistent than years with high SIC. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Kara Sea Sea ice Siberia University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Kara Sea Pacific Climate Dynamics 52 3-4 2497 2512 |
institution |
Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Climate variability Arctic sea ice Self organizing maps (SOMs) Atmospheric circulation |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Climate variability Arctic sea ice Self organizing maps (SOMs) Atmospheric circulation Kapsch, Marie-Luise Skific, Natasa Graversen, Rune Tjernström, Michael Francis, Jennifer A. Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Climate variability Arctic sea ice Self organizing maps (SOMs) Atmospheric circulation |
description |
Source at https://doi.org/10.1007/s00382-018-4279-z . The declining trend of Arctic September sea ice constitutes a significant change in the Arctic climate system. Large yearto-year variations are superimposed on this sea–ice trend, with the largest variability observed in the eastern Arctic Ocean. Knowledge of the processes important for this variability may lead to an improved understanding of seasonal and long-term changes. Previous studies suggest that transport of heat and moisture into the Arctic during spring enhances downward surface longwave radiation, thereby controlling the annual melt onset, setting the stage for the September ice minimum. In agreement with these studies, we find that years with a low September sea–ice concentration (SIC) are characterized by more persistent periods in spring with enhanced energy flux to the surface in forms of net longwave radiation plus turbulent fluxes, compared to years with a high SIC. Two main atmospheric circulation patterns related to these episodes are identified: one resembles the so-called Arctic dipole anomaly that promotes transport of heat and moisture from the North Pacific, whereas the other is characterized by negative geopotential height anomalies over the Arctic, favoring cyclonic flow from Siberia and the Kara Sea into the eastern Arctic Ocean. However, differences between years with low and high September SIC appear not to be due to different spring circulation patterns; instead it is the persistence and intensity of processes associated with these patterns that distinguish the two groups of anomalous years: Years with low September SIC feature episodes that are consistently stronger and more persistent than years with high SIC. |
format |
Article in Journal/Newspaper |
author |
Kapsch, Marie-Luise Skific, Natasa Graversen, Rune Tjernström, Michael Francis, Jennifer A. |
author_facet |
Kapsch, Marie-Luise Skific, Natasa Graversen, Rune Tjernström, Michael Francis, Jennifer A. |
author_sort |
Kapsch, Marie-Luise |
title |
Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns |
title_short |
Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns |
title_full |
Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns |
title_fullStr |
Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns |
title_full_unstemmed |
Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns |
title_sort |
summers with low arctic sea ice linked to persistence of spring atmospheric circulation patterns |
publisher |
Springer Verlag |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/14784 https://doi.org/10.1007/s00382-018-4279-z |
geographic |
Arctic Arctic Ocean Kara Sea Pacific |
geographic_facet |
Arctic Arctic Ocean Kara Sea Pacific |
genre |
Arctic Arctic Arctic Ocean Kara Sea Sea ice Siberia |
genre_facet |
Arctic Arctic Arctic Ocean Kara Sea Sea ice Siberia |
op_relation |
Climate Dynamics Kapsch, M.-L., Skific, N., Graversen, R. G., Tjernström, M. & Francis, J. A. (2018). Summers with low Arctic sea ice linked to persistence of spring atmospheric circulation patterns. https://doi.org/10.1007/s00382-018-4279-z. FRIDAID 1629923 doi:10.1007/s00382-018-4279-z 0930-7575 1432-0894 https://hdl.handle.net/10037/14784 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1007/s00382-018-4279-z |
container_title |
Climate Dynamics |
container_volume |
52 |
container_issue |
3-4 |
container_start_page |
2497 |
op_container_end_page |
2512 |
_version_ |
1766298426691026944 |