Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability
Landfast sea ice (fast ice) is an important though poorly understood component of the cryosphere on the Antarctic continental shelf, where it plays a key role in atmosphereoceanice-sheet interaction and coupled ecological and biogeochemical processes. Here, we present a first in-depth baseline analy...
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Online Access: | https://doi.org/10.5194/tc-15-5061-2021 http://ecite.utas.edu.au/144083 |
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ftunivtasecite:oai:ecite.utas.edu.au:144083 2023-05-15T13:42:40+02:00 Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability Fraser, AD Massom, RA Handcock, MS Reid, P Ohshima, KI Raphael, MN Cartwright, J Klekociuk, AR Wang, Z Porter-Smith, R 2021 application/pdf https://doi.org/10.5194/tc-15-5061-2021 http://ecite.utas.edu.au/144083 en eng Copernicus GmbH http://ecite.utas.edu.au/144083/1/144083 - 18 year record of circum-Antarctic landfast sea ice distribution.pdf http://dx.doi.org/10.5194/tc-15-5061-2021 Fraser, AD and Massom, RA and Handcock, MS and Reid, P and Ohshima, KI and Raphael, MN and Cartwright, J and Klekociuk, AR and Wang, Z and Porter-Smith, R, Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability, Cryosphere, 15, (11) pp. 5061-5077. ISSN 1994-0416 (2021) [Refereed Article] http://ecite.utas.edu.au/144083 Earth Sciences Physical geography and environmental geoscience Glaciology Refereed Article PeerReviewed 2021 ftunivtasecite https://doi.org/10.5194/tc-15-5061-2021 2022-08-30T09:11:43Z Landfast sea ice (fast ice) is an important though poorly understood component of the cryosphere on the Antarctic continental shelf, where it plays a key role in atmosphereoceanice-sheet interaction and coupled ecological and biogeochemical processes. Here, we present a first in-depth baseline analysis of variability and change in circum-Antarctic fast-ice distribution (including its relationship to bathymetry), based on a new high-resolution satellite-derived time series for the period 2000 to 2018. This reveals (a) an overall trend of −882824 km 2 yr −1 (−0.190.18 % yr −1 ) and (b) eight distinct regions in terms of fast-ice coverage and modes of formation. Of these, four exhibit positive trends over the 18-year period and four negative. Positive trends are seen in East Antarctica and in the Bellingshausen Sea, with this region claiming the largest positive trend of +1198359 km 2 yr −1 (+1.100.35 % yr −1 ). The four negative trends predominantly occur in West Antarctica, with the largest negative trend of −1206277 km 2 yr −1 (−1.780.41 % yr −1 ) occurring in the Victoria and Oates Land region in the western Ross Sea. All trends are significant. This new baseline analysis represents a significant advance in our knowledge of the current state of both the global cryosphere and the complex Antarctic coastal system, which are vulnerable to climate variability and change. It will also inform a wide range of other studies. Article in Journal/Newspaper Antarc* Antarctic Antarctica Bellingshausen Sea East Antarctica Oates Land Ross Sea Sea ice West Antarctica eCite UTAS (University of Tasmania) Antarctic The Antarctic East Antarctica Ross Sea West Antarctica Bellingshausen Sea Oates Land ENVELOPE(158.000,158.000,-70.000,-70.000) The Cryosphere 15 11 5061 5077 |
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 Fraser, AD Massom, RA Handcock, MS Reid, P Ohshima, KI Raphael, MN Cartwright, J Klekociuk, AR Wang, Z Porter-Smith, R Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability |
topic_facet |
Earth Sciences Physical geography and environmental geoscience Glaciology |
description |
Landfast sea ice (fast ice) is an important though poorly understood component of the cryosphere on the Antarctic continental shelf, where it plays a key role in atmosphereoceanice-sheet interaction and coupled ecological and biogeochemical processes. Here, we present a first in-depth baseline analysis of variability and change in circum-Antarctic fast-ice distribution (including its relationship to bathymetry), based on a new high-resolution satellite-derived time series for the period 2000 to 2018. This reveals (a) an overall trend of −882824 km 2 yr −1 (−0.190.18 % yr −1 ) and (b) eight distinct regions in terms of fast-ice coverage and modes of formation. Of these, four exhibit positive trends over the 18-year period and four negative. Positive trends are seen in East Antarctica and in the Bellingshausen Sea, with this region claiming the largest positive trend of +1198359 km 2 yr −1 (+1.100.35 % yr −1 ). The four negative trends predominantly occur in West Antarctica, with the largest negative trend of −1206277 km 2 yr −1 (−1.780.41 % yr −1 ) occurring in the Victoria and Oates Land region in the western Ross Sea. All trends are significant. This new baseline analysis represents a significant advance in our knowledge of the current state of both the global cryosphere and the complex Antarctic coastal system, which are vulnerable to climate variability and change. It will also inform a wide range of other studies. |
format |
Article in Journal/Newspaper |
author |
Fraser, AD Massom, RA Handcock, MS Reid, P Ohshima, KI Raphael, MN Cartwright, J Klekociuk, AR Wang, Z Porter-Smith, R |
author_facet |
Fraser, AD Massom, RA Handcock, MS Reid, P Ohshima, KI Raphael, MN Cartwright, J Klekociuk, AR Wang, Z Porter-Smith, R |
author_sort |
Fraser, AD |
title |
Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability |
title_short |
Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability |
title_full |
Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability |
title_fullStr |
Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability |
title_full_unstemmed |
Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability |
title_sort |
eighteen year record of circum-antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability |
publisher |
Copernicus GmbH |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-5061-2021 http://ecite.utas.edu.au/144083 |
long_lat |
ENVELOPE(158.000,158.000,-70.000,-70.000) |
geographic |
Antarctic The Antarctic East Antarctica Ross Sea West Antarctica Bellingshausen Sea Oates Land |
geographic_facet |
Antarctic The Antarctic East Antarctica Ross Sea West Antarctica Bellingshausen Sea Oates Land |
genre |
Antarc* Antarctic Antarctica Bellingshausen Sea East Antarctica Oates Land Ross Sea Sea ice West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Bellingshausen Sea East Antarctica Oates Land Ross Sea Sea ice West Antarctica |
op_relation |
http://ecite.utas.edu.au/144083/1/144083 - 18 year record of circum-Antarctic landfast sea ice distribution.pdf http://dx.doi.org/10.5194/tc-15-5061-2021 Fraser, AD and Massom, RA and Handcock, MS and Reid, P and Ohshima, KI and Raphael, MN and Cartwright, J and Klekociuk, AR and Wang, Z and Porter-Smith, R, Eighteen year record of circum-Antarctic landfast sea ice distribution allows detailed baseline characterisation, reveals trends and variability, Cryosphere, 15, (11) pp. 5061-5077. ISSN 1994-0416 (2021) [Refereed Article] http://ecite.utas.edu.au/144083 |
op_doi |
https://doi.org/10.5194/tc-15-5061-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
11 |
container_start_page |
5061 |
op_container_end_page |
5077 |
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1766171222854336512 |