2009), Atmospheric forcing of Fram Strait sea ice export: a closer
Fram Strait is the primary region of sea ice export from the Arctic and therefore plays an important role in regulating the amount of sea ice and freshwater within the Arctic. We investigate the variability of Fram Strait sea ice motion and the role of atmospheric circulation forcing using daily dat...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.384.4010 2023-05-15T14:59:48+02:00 2009), Atmospheric forcing of Fram Strait sea ice export: a closer Maria Tsukernik Clara Deser Michael Alexander Robert Tomas The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.384.4010 http://www.cgd.ucar.edu/cas/cdeser/Docs/PAPER_FINAL_MARCH_16.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.384.4010 http://www.cgd.ucar.edu/cas/cdeser/Docs/PAPER_FINAL_MARCH_16.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.cgd.ucar.edu/cas/cdeser/Docs/PAPER_FINAL_MARCH_16.pdf text ftciteseerx 2016-09-18T00:29:52Z Fram Strait is the primary region of sea ice export from the Arctic and therefore plays an important role in regulating the amount of sea ice and freshwater within the Arctic. We investigate the variability of Fram Strait sea ice motion and the role of atmospheric circulation forcing using daily data during the period 1979-2006. The most prominent atmospheric driver of anomalous sea ice motion across Fram Strait is an east-west dipole pattern of Sea Level Pressure (SLP) anomalies with centers-of-action located over the Barents Sea and Greenland. This pattern, also observed in synoptic studies, is associated with anomalous meridional winds across Fram Strait and is thus physically consistent with forcing changes in sea ice motion. The association between the SLP dipole pattern and Fram Strait ice motion is maximized at 0-lag, persists yearround, and is strongest on time scales of 10-60 days. The SLP dipole pattern is the 2 nd Empirical Orthogonal Function (EOF) of daily SLP anomalies in both winter and summer. When the analysis is repeated with monthly data, only the Barents center of the SLP dipole remains significantly correlated with Fram Strait sea ice motion. However, after removing the leading EOF of monthly SLP variability (e.g. the North Atlantic Oscillation), the full east-west dipole pattern is recovered. No significant SLP forcing of Fram Strait ice motion is found in summer using monthly data, even when the leading EOF is removed. Our results highlight the importance of high frequency atmospheric variability in forcing Fram Strait sea ice motion. 2 Text Arctic Barents Sea Fram Strait Greenland North Atlantic North Atlantic oscillation Sea ice Unknown Arctic Barents Sea Greenland |
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ftciteseerx |
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English |
description |
Fram Strait is the primary region of sea ice export from the Arctic and therefore plays an important role in regulating the amount of sea ice and freshwater within the Arctic. We investigate the variability of Fram Strait sea ice motion and the role of atmospheric circulation forcing using daily data during the period 1979-2006. The most prominent atmospheric driver of anomalous sea ice motion across Fram Strait is an east-west dipole pattern of Sea Level Pressure (SLP) anomalies with centers-of-action located over the Barents Sea and Greenland. This pattern, also observed in synoptic studies, is associated with anomalous meridional winds across Fram Strait and is thus physically consistent with forcing changes in sea ice motion. The association between the SLP dipole pattern and Fram Strait ice motion is maximized at 0-lag, persists yearround, and is strongest on time scales of 10-60 days. The SLP dipole pattern is the 2 nd Empirical Orthogonal Function (EOF) of daily SLP anomalies in both winter and summer. When the analysis is repeated with monthly data, only the Barents center of the SLP dipole remains significantly correlated with Fram Strait sea ice motion. However, after removing the leading EOF of monthly SLP variability (e.g. the North Atlantic Oscillation), the full east-west dipole pattern is recovered. No significant SLP forcing of Fram Strait ice motion is found in summer using monthly data, even when the leading EOF is removed. Our results highlight the importance of high frequency atmospheric variability in forcing Fram Strait sea ice motion. 2 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Maria Tsukernik Clara Deser Michael Alexander Robert Tomas |
spellingShingle |
Maria Tsukernik Clara Deser Michael Alexander Robert Tomas 2009), Atmospheric forcing of Fram Strait sea ice export: a closer |
author_facet |
Maria Tsukernik Clara Deser Michael Alexander Robert Tomas |
author_sort |
Maria Tsukernik |
title |
2009), Atmospheric forcing of Fram Strait sea ice export: a closer |
title_short |
2009), Atmospheric forcing of Fram Strait sea ice export: a closer |
title_full |
2009), Atmospheric forcing of Fram Strait sea ice export: a closer |
title_fullStr |
2009), Atmospheric forcing of Fram Strait sea ice export: a closer |
title_full_unstemmed |
2009), Atmospheric forcing of Fram Strait sea ice export: a closer |
title_sort |
2009), atmospheric forcing of fram strait sea ice export: a closer |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.384.4010 http://www.cgd.ucar.edu/cas/cdeser/Docs/PAPER_FINAL_MARCH_16.pdf |
geographic |
Arctic Barents Sea Greenland |
geographic_facet |
Arctic Barents Sea Greenland |
genre |
Arctic Barents Sea Fram Strait Greenland North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic Barents Sea Fram Strait Greenland North Atlantic North Atlantic oscillation Sea ice |
op_source |
http://www.cgd.ucar.edu/cas/cdeser/Docs/PAPER_FINAL_MARCH_16.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.384.4010 http://www.cgd.ucar.edu/cas/cdeser/Docs/PAPER_FINAL_MARCH_16.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766331922065129472 |