Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and 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 atmosphere–ocean–ice-sheet interaction and coupled ecological and biogeochemical processes. Here, we present a first in-depth baseline ana...
Published in: | The Cryosphere |
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Language: | English |
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Copernicus Publications
2021
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Online Access: | https://doi.org/10.5194/tc-15-5061-2021 https://doaj.org/article/7aa407daf1784738a54b1a15e7b29e9f |
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ftdoajarticles:oai:doaj.org/article:7aa407daf1784738a54b1a15e7b29e9f 2023-05-15T14:05:17+02:00 Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability A. D. Fraser R. A. Massom M. S. Handcock P. Reid K. I. Ohshima M. N. Raphael J. Cartwright A. R. Klekociuk Z. Wang R. Porter-Smith 2021-11-01T00:00:00Z https://doi.org/10.5194/tc-15-5061-2021 https://doaj.org/article/7aa407daf1784738a54b1a15e7b29e9f EN eng Copernicus Publications https://tc.copernicus.org/articles/15/5061/2021/tc-15-5061-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5061-2021 1994-0416 1994-0424 https://doaj.org/article/7aa407daf1784738a54b1a15e7b29e9f The Cryosphere, Vol 15, Pp 5061-5077 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-5061-2021 2022-12-31T10:51:54Z 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 atmosphere–ocean–ice-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 <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">882</mn><mo>±</mo><mn mathvariant="normal">824</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="58pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="453c88ebba731e287b80a2e1ca09d1f2"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-5061-2021-ie00001.svg" width="58pt" height="10pt" src="tc-15-5061-2021-ie00001.png"/></svg:svg> km 2 yr −1 ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">0.19</mn><mo>±</mo><mn mathvariant="normal">0.18</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="64pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="ae39578bd83f0d4df3b4603b31a77636"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-5061-2021-ie00002.svg" width="64pt" height="10pt" src="tc-15-5061-2021-ie00002.png"/></svg:svg> % 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 ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Sea ice The Cryosphere Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic East Antarctica The Cryosphere 15 11 5061 5077 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 A. D. Fraser R. A. Massom M. S. Handcock P. Reid K. I. Ohshima M. N. Raphael J. Cartwright A. R. Klekociuk Z. Wang R. Porter-Smith Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
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 atmosphere–ocean–ice-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 <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">882</mn><mo>±</mo><mn mathvariant="normal">824</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="58pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="453c88ebba731e287b80a2e1ca09d1f2"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-5061-2021-ie00001.svg" width="58pt" height="10pt" src="tc-15-5061-2021-ie00001.png"/></svg:svg> km 2 yr −1 ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">0.19</mn><mo>±</mo><mn mathvariant="normal">0.18</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="64pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="ae39578bd83f0d4df3b4603b31a77636"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-5061-2021-ie00002.svg" width="64pt" height="10pt" src="tc-15-5061-2021-ie00002.png"/></svg:svg> % 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 ... |
format |
Article in Journal/Newspaper |
author |
A. D. Fraser R. A. Massom M. S. Handcock P. Reid K. I. Ohshima M. N. Raphael J. Cartwright A. R. Klekociuk Z. Wang R. Porter-Smith |
author_facet |
A. D. Fraser R. A. Massom M. S. Handcock P. Reid K. I. Ohshima M. N. Raphael J. Cartwright A. R. Klekociuk Z. Wang R. Porter-Smith |
author_sort |
A. D. Fraser |
title |
Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability |
title_short |
Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability |
title_full |
Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability |
title_fullStr |
Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability |
title_full_unstemmed |
Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability |
title_sort |
eighteen-year record of circum-antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-5061-2021 https://doaj.org/article/7aa407daf1784738a54b1a15e7b29e9f |
geographic |
Antarctic The Antarctic East Antarctica |
geographic_facet |
Antarctic The Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Sea ice The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 5061-5077 (2021) |
op_relation |
https://tc.copernicus.org/articles/15/5061/2021/tc-15-5061-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5061-2021 1994-0416 1994-0424 https://doaj.org/article/7aa407daf1784738a54b1a15e7b29e9f |
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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1766277098258825216 |