Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10
Recent analyses have shown that significant changes have occurred in patterns of sea ice seasonality in West Antarctica since 1979, with wide-ranging climatic, biological and biogeochemical consequences. Here, we provide the first detailed report on long-term change and variability in annual timings...
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ftunivtasecite:oai:ecite.utas.edu.au:84783 2023-05-15T14:02:31+02:00 Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10 Massom, RA Reid, P Stammerjohn, S Raymond, B Fraser, AD Ushio, S 2013 application/pdf https://doi.org/10.1371/journal.pone.0064756 http://www.ncbi.nlm.nih.gov/pubmed/23705008 http://ecite.utas.edu.au/84783 en eng Public Library of Science http://ecite.utas.edu.au/84783/1/Massom_2013_Change_Variability_East Antarctic.pdf http://dx.doi.org/10.1371/journal.pone.0064756 Massom, RA and Reid, P and Stammerjohn, S and Raymond, B and Fraser, AD and Ushio, S, Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10, PLoS One, 8, (5) Article e64756. ISSN 1932-6203 (2013) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/23705008 http://ecite.utas.edu.au/84783 Earth Sciences Physical Geography and Environmental Geoscience Glaciology Refereed Article PeerReviewed 2013 ftunivtasecite https://doi.org/10.1371/journal.pone.0064756 2019-12-13T21:49:11Z Recent analyses have shown that significant changes have occurred in patterns of sea ice seasonality in West Antarctica since 1979, with wide-ranging climatic, biological and biogeochemical consequences. Here, we provide the first detailed report on long-term change and variability in annual timings of sea ice advance, retreat and resultant ice season duration in East Antarctica. These were calculated from satellite-derived ice concentration data for the period 1979/80 to 2009/10. The pattern of change in sea ice seasonality off East Antarctica comprises mixed signals on regional to local scales, with pockets of strongly positive and negative trends occurring in near juxtaposition in certain regions e.g., Prydz Bay. This pattern strongly reflects change and variability in different elements of the marine icescape, including fast ice, polynyas and the marginal ice zone. A trend towards shorter sea-ice duration (of 1 to 3 days per annum) occurs in fairly isolated pockets in the outer pack from~95110E, and in various near-coastal areas that include an area of particularly strong and persistent change near Australia's Davis Station and between the Amery and West Ice Shelves. These areas are largely associated with coastal polynyas that are important as sites of enhanced sea ice production/melt. Areas of positive trend in ice season duration are more extensive, and include an extensive zone from 160170E (i.e., the western Ross Sea sector) and the near-coastal zone between 40100E. The East Antarctic pattern is considerably more complex than the well-documented trends in West Antarctica e.g., in the Antarctic Peninsula-Bellingshausen Sea and western Ross Sea sectors. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Bellingshausen Sea East Antarctica Ice Shelves Prydz Bay Ross Sea Sea ice West Antarctica eCite UTAS (University of Tasmania) Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Antarctic Antarctic Peninsula Bellingshausen Sea Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) East Antarctica Prydz Bay Ross Sea The Antarctic West Antarctica PLoS ONE 8 5 e64756 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology Massom, RA Reid, P Stammerjohn, S Raymond, B Fraser, AD Ushio, S Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10 |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology |
description |
Recent analyses have shown that significant changes have occurred in patterns of sea ice seasonality in West Antarctica since 1979, with wide-ranging climatic, biological and biogeochemical consequences. Here, we provide the first detailed report on long-term change and variability in annual timings of sea ice advance, retreat and resultant ice season duration in East Antarctica. These were calculated from satellite-derived ice concentration data for the period 1979/80 to 2009/10. The pattern of change in sea ice seasonality off East Antarctica comprises mixed signals on regional to local scales, with pockets of strongly positive and negative trends occurring in near juxtaposition in certain regions e.g., Prydz Bay. This pattern strongly reflects change and variability in different elements of the marine icescape, including fast ice, polynyas and the marginal ice zone. A trend towards shorter sea-ice duration (of 1 to 3 days per annum) occurs in fairly isolated pockets in the outer pack from~95110E, and in various near-coastal areas that include an area of particularly strong and persistent change near Australia's Davis Station and between the Amery and West Ice Shelves. These areas are largely associated with coastal polynyas that are important as sites of enhanced sea ice production/melt. Areas of positive trend in ice season duration are more extensive, and include an extensive zone from 160170E (i.e., the western Ross Sea sector) and the near-coastal zone between 40100E. The East Antarctic pattern is considerably more complex than the well-documented trends in West Antarctica e.g., in the Antarctic Peninsula-Bellingshausen Sea and western Ross Sea sectors. |
format |
Article in Journal/Newspaper |
author |
Massom, RA Reid, P Stammerjohn, S Raymond, B Fraser, AD Ushio, S |
author_facet |
Massom, RA Reid, P Stammerjohn, S Raymond, B Fraser, AD Ushio, S |
author_sort |
Massom, RA |
title |
Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10 |
title_short |
Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10 |
title_full |
Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10 |
title_fullStr |
Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10 |
title_full_unstemmed |
Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10 |
title_sort |
change and variability in east antarctic sea ice seasonality, 1979/80-2009/10 |
publisher |
Public Library of Science |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0064756 http://www.ncbi.nlm.nih.gov/pubmed/23705008 http://ecite.utas.edu.au/84783 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(77.968,77.968,-68.576,-68.576) |
geographic |
Amery Antarctic Antarctic Peninsula Bellingshausen Sea Davis Station Davis-Station East Antarctica Prydz Bay Ross Sea The Antarctic West Antarctica |
geographic_facet |
Amery Antarctic Antarctic Peninsula Bellingshausen Sea Davis Station Davis-Station East Antarctica Prydz Bay Ross Sea The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Bellingshausen Sea East Antarctica Ice Shelves Prydz Bay Ross Sea Sea ice West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Bellingshausen Sea East Antarctica Ice Shelves Prydz Bay Ross Sea Sea ice West Antarctica |
op_relation |
http://ecite.utas.edu.au/84783/1/Massom_2013_Change_Variability_East Antarctic.pdf http://dx.doi.org/10.1371/journal.pone.0064756 Massom, RA and Reid, P and Stammerjohn, S and Raymond, B and Fraser, AD and Ushio, S, Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10, PLoS One, 8, (5) Article e64756. ISSN 1932-6203 (2013) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/23705008 http://ecite.utas.edu.au/84783 |
op_doi |
https://doi.org/10.1371/journal.pone.0064756 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
5 |
container_start_page |
e64756 |
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1766272828183674880 |