Observed variations in multidecadal Antarctic sea ice trends during 1979–2012
The spatiotemporal sensitivity of Antarctic sea ice season length trends are examined using satellite-derived observations over 1979-2012. While the large-scale spatial structure of multidecadal trends has varied little during the satellite record, the magnitude of trends has undergone substantial w...
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ftunswworks:oai:unsworks.library.unsw.edu.au:1959.4/53680 2023-05-15T13:52:09+02:00 Observed variations in multidecadal Antarctic sea ice trends during 1979–2012 Simpkins, Graham Ciasto, L England, Matthew 2013 http://hdl.handle.net/1959.4/53680 https://doi.org/10.1002/grl.50715 EN eng http://hdl.handle.net/1959.4/53680 http://dx.doi.org/10.1002/grl.50715 metadata only access http://purl.org/coar/access_right/c_14cb CC BY-NC-ND 3.0 https://creativecommons.org/licenses/by-nc-nd/3.0/au/ Copyright (2013) American Geophysical Union. Published version available at: http://dx.doi.org/10.1002/grl.50715 CC-BY-NC-ND urn:ISSN:0094-8276 Geophysical Research Letters, 40, 14, 3643-3648 journal article http://purl.org/coar/resource_type/c_6501 2013 ftunswworks https://doi.org/10.1002/grl.50715 2022-08-09T07:40:36Z The spatiotemporal sensitivity of Antarctic sea ice season length trends are examined using satellite-derived observations over 1979-2012. While the large-scale spatial structure of multidecadal trends has varied little during the satellite record, the magnitude of trends has undergone substantial weakening over the past decade. This weakening is particularly evident in the Ross and Bellingshausen Seas, where a approximate to 25-50% reduction is observed when comparing trends calculated over 1979-2012 and 1979-1999. Multidecadal trends in the Bellingshausen Sea are found to be dominated by variability over subdecadal time scales, particularly the rapid decline in season length observed between 1979 and 1989. In fact, virtually no trend is detectable when the first decade is excluded from trend calculations. In contrast, the sea ice expansion in the Ross Sea is less influenced by shorter-term variability, with trends shown to be more consistent at decadal time scales and beyond. Understanding these contrasting characteristics have implications for sea ice trend attribution. Article in Journal/Newspaper Antarc* Antarctic Bellingshausen Sea Ross Sea Sea ice UNSW Sydney (The University of New South Wales): UNSWorks Antarctic Bellingshausen Sea Ross Sea Geophysical Research Letters 40 14 3643 3648 |
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Open Polar |
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UNSW Sydney (The University of New South Wales): UNSWorks |
op_collection_id |
ftunswworks |
language |
English |
description |
The spatiotemporal sensitivity of Antarctic sea ice season length trends are examined using satellite-derived observations over 1979-2012. While the large-scale spatial structure of multidecadal trends has varied little during the satellite record, the magnitude of trends has undergone substantial weakening over the past decade. This weakening is particularly evident in the Ross and Bellingshausen Seas, where a approximate to 25-50% reduction is observed when comparing trends calculated over 1979-2012 and 1979-1999. Multidecadal trends in the Bellingshausen Sea are found to be dominated by variability over subdecadal time scales, particularly the rapid decline in season length observed between 1979 and 1989. In fact, virtually no trend is detectable when the first decade is excluded from trend calculations. In contrast, the sea ice expansion in the Ross Sea is less influenced by shorter-term variability, with trends shown to be more consistent at decadal time scales and beyond. Understanding these contrasting characteristics have implications for sea ice trend attribution. |
format |
Article in Journal/Newspaper |
author |
Simpkins, Graham Ciasto, L England, Matthew |
spellingShingle |
Simpkins, Graham Ciasto, L England, Matthew Observed variations in multidecadal Antarctic sea ice trends during 1979–2012 |
author_facet |
Simpkins, Graham Ciasto, L England, Matthew |
author_sort |
Simpkins, Graham |
title |
Observed variations in multidecadal Antarctic sea ice trends during 1979–2012 |
title_short |
Observed variations in multidecadal Antarctic sea ice trends during 1979–2012 |
title_full |
Observed variations in multidecadal Antarctic sea ice trends during 1979–2012 |
title_fullStr |
Observed variations in multidecadal Antarctic sea ice trends during 1979–2012 |
title_full_unstemmed |
Observed variations in multidecadal Antarctic sea ice trends during 1979–2012 |
title_sort |
observed variations in multidecadal antarctic sea ice trends during 1979–2012 |
publishDate |
2013 |
url |
http://hdl.handle.net/1959.4/53680 https://doi.org/10.1002/grl.50715 |
geographic |
Antarctic Bellingshausen Sea Ross Sea |
geographic_facet |
Antarctic Bellingshausen Sea Ross Sea |
genre |
Antarc* Antarctic Bellingshausen Sea Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Bellingshausen Sea Ross Sea Sea ice |
op_source |
urn:ISSN:0094-8276 Geophysical Research Letters, 40, 14, 3643-3648 |
op_relation |
http://hdl.handle.net/1959.4/53680 http://dx.doi.org/10.1002/grl.50715 |
op_rights |
metadata only access http://purl.org/coar/access_right/c_14cb CC BY-NC-ND 3.0 https://creativecommons.org/licenses/by-nc-nd/3.0/au/ Copyright (2013) American Geophysical Union. Published version available at: http://dx.doi.org/10.1002/grl.50715 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1002/grl.50715 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
14 |
container_start_page |
3643 |
op_container_end_page |
3648 |
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1766256415811305472 |