Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration
Recent studies suggest that springtime moisture transport into the Arctic can initiate sea ice melt that extends to a large area in the following summer and fall, which can help explain Arctic sea ice interannual variability. Yet the impact from an individual moisture transport event, especially the...
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Online Access: | https://escholarship.org/uc/item/99z1q4g5 https://escholarship.org/content/qt99z1q4g5/qt99z1q4g5.pdf https://doi.org/10.1002/2016jd026324 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt99z1q4g5 2024-09-15T18:09:29+00:00 Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration Yang, Wenchang Magnusdottir, Gudrun 5316 - 5329 2017-05-27 application/pdf https://escholarship.org/uc/item/99z1q4g5 https://escholarship.org/content/qt99z1q4g5/qt99z1q4g5.pdf https://doi.org/10.1002/2016jd026324 unknown eScholarship, University of California qt99z1q4g5 https://escholarship.org/uc/item/99z1q4g5 https://escholarship.org/content/qt99z1q4g5/qt99z1q4g5.pdf doi:10.1002/2016jd026324 public Journal of Geophysical Research: Atmospheres, vol 122, iss 10 Climate Action Atmospheric Sciences Physical Geography and Environmental Geoscience article 2017 ftcdlib https://doi.org/10.1002/2016jd026324 2024-06-28T06:28:19Z Recent studies suggest that springtime moisture transport into the Arctic can initiate sea ice melt that extends to a large area in the following summer and fall, which can help explain Arctic sea ice interannual variability. Yet the impact from an individual moisture transport event, especially the extreme ones, is unclear on synoptic to intraseasonal time scales and this is the focus of the current study. Springtime extreme moisture transport into the Arctic from a daily data set is found to be dominant over Atlantic longitudes. Lag composite analysis shows that these extreme events are accompanied by a substantial sea ice concentration reduction over the Greenland-Barents-Kara Seas that lasts around a week. Surface air temperature also becomes anomalously high over these seas and cold to the west of Greenland as well as over the interior Eurasian continent. The blocking weather regime over the North Atlantic is mainly responsible for the extreme moisture transport, occupying more than 60% of the total extreme days, while the negative North Atlantic Oscillation regime is hardly observed at all during the extreme transport days. These extreme moisture transport events appear to be preceded by eastward propagating large-scale tropical convective forcing by as long as 2 weeks but with great uncertainty due to lack of statistical significance. Article in Journal/Newspaper Greenland North Atlantic North Atlantic oscillation Sea ice University of California: eScholarship Journal of Geophysical Research: Atmospheres 122 10 5316 5329 |
institution |
Open Polar |
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University of California: eScholarship |
op_collection_id |
ftcdlib |
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unknown |
topic |
Climate Action Atmospheric Sciences Physical Geography and Environmental Geoscience |
spellingShingle |
Climate Action Atmospheric Sciences Physical Geography and Environmental Geoscience Yang, Wenchang Magnusdottir, Gudrun Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration |
topic_facet |
Climate Action Atmospheric Sciences Physical Geography and Environmental Geoscience |
description |
Recent studies suggest that springtime moisture transport into the Arctic can initiate sea ice melt that extends to a large area in the following summer and fall, which can help explain Arctic sea ice interannual variability. Yet the impact from an individual moisture transport event, especially the extreme ones, is unclear on synoptic to intraseasonal time scales and this is the focus of the current study. Springtime extreme moisture transport into the Arctic from a daily data set is found to be dominant over Atlantic longitudes. Lag composite analysis shows that these extreme events are accompanied by a substantial sea ice concentration reduction over the Greenland-Barents-Kara Seas that lasts around a week. Surface air temperature also becomes anomalously high over these seas and cold to the west of Greenland as well as over the interior Eurasian continent. The blocking weather regime over the North Atlantic is mainly responsible for the extreme moisture transport, occupying more than 60% of the total extreme days, while the negative North Atlantic Oscillation regime is hardly observed at all during the extreme transport days. These extreme moisture transport events appear to be preceded by eastward propagating large-scale tropical convective forcing by as long as 2 weeks but with great uncertainty due to lack of statistical significance. |
format |
Article in Journal/Newspaper |
author |
Yang, Wenchang Magnusdottir, Gudrun |
author_facet |
Yang, Wenchang Magnusdottir, Gudrun |
author_sort |
Yang, Wenchang |
title |
Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration |
title_short |
Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration |
title_full |
Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration |
title_fullStr |
Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration |
title_full_unstemmed |
Springtime extreme moisture transport into the Arctic and its impact on sea ice concentration |
title_sort |
springtime extreme moisture transport into the arctic and its impact on sea ice concentration |
publisher |
eScholarship, University of California |
publishDate |
2017 |
url |
https://escholarship.org/uc/item/99z1q4g5 https://escholarship.org/content/qt99z1q4g5/qt99z1q4g5.pdf https://doi.org/10.1002/2016jd026324 |
op_coverage |
5316 - 5329 |
genre |
Greenland North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Greenland North Atlantic North Atlantic oscillation Sea ice |
op_source |
Journal of Geophysical Research: Atmospheres, vol 122, iss 10 |
op_relation |
qt99z1q4g5 https://escholarship.org/uc/item/99z1q4g5 https://escholarship.org/content/qt99z1q4g5/qt99z1q4g5.pdf doi:10.1002/2016jd026324 |
op_rights |
public |
op_doi |
https://doi.org/10.1002/2016jd026324 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
122 |
container_issue |
10 |
container_start_page |
5316 |
op_container_end_page |
5329 |
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1810447053359153152 |