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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ftdoajarticles:oai:doaj.org/article:f800779ac45e4b2fa77ea6e29e4f5a64 2023-05-15T13:51:45+02:00 Change and variability in East antarctic sea ice seasonality, 1979/80-2009/10. Robert Massom Philip Reid Sharon Stammerjohn Ben Raymond Alexander Fraser Shuki Ushio 2013-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0064756 https://doaj.org/article/f800779ac45e4b2fa77ea6e29e4f5a64 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3660359?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0064756 https://doaj.org/article/f800779ac45e4b2fa77ea6e29e4f5a64 PLoS ONE, Vol 8, Iss 5, p e64756 (2013) Medicine R Science Q article 2013 ftdoajarticles https://doi.org/10.1371/journal.pone.0064756 2022-12-31T00:04:13Z 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∼95-110°E, 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 160-170°E (i.e., the western Ross Sea sector) and the near-coastal zone between 40-100°E. 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 Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Antarctic Peninsula East Antarctica Ross Sea West Antarctica Prydz Bay Bellingshausen Sea Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) PLoS ONE 8 5 e64756 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Robert Massom Philip Reid Sharon Stammerjohn Ben Raymond Alexander Fraser Shuki Ushio Change and variability in East antarctic sea ice seasonality, 1979/80-2009/10. |
topic_facet |
Medicine R Science Q |
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∼95-110°E, 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 160-170°E (i.e., the western Ross Sea sector) and the near-coastal zone between 40-100°E. 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 |
Robert Massom Philip Reid Sharon Stammerjohn Ben Raymond Alexander Fraser Shuki Ushio |
author_facet |
Robert Massom Philip Reid Sharon Stammerjohn Ben Raymond Alexander Fraser Shuki Ushio |
author_sort |
Robert Massom |
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 (PLoS) |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0064756 https://doaj.org/article/f800779ac45e4b2fa77ea6e29e4f5a64 |
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 |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Ross Sea West Antarctica Prydz Bay Bellingshausen Sea Amery Davis Station Davis-Station |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Ross Sea West Antarctica Prydz Bay Bellingshausen Sea Amery Davis Station Davis-Station |
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_source |
PLoS ONE, Vol 8, Iss 5, p e64756 (2013) |
op_relation |
http://europepmc.org/articles/PMC3660359?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0064756 https://doaj.org/article/f800779ac45e4b2fa77ea6e29e4f5a64 |
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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