Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability
Cold Glacier Growth Pine Island Glacier in Antarctica has thinned significantly during the last two decades and has provided a measurable contribution to sea-level rise as a result. Both glacier dynamics and climate are thought to be responsible for thinning, but exactly how they influence the glaci...
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craaas:10.1126/science.1244341 2024-06-23T07:46:23+00:00 Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability Dutrieux, Pierre De Rydt, Jan Jenkins, Adrian Holland, Paul R. Ha, Ho Kyung Lee, Sang Hoon Steig, Eric J. Ding, Qinghua Abrahamsen, E. Povl Schröder, Michael 2014 http://dx.doi.org/10.1126/science.1244341 https://www.science.org/doi/pdf/10.1126/science.1244341 en eng American Association for the Advancement of Science (AAAS) Science volume 343, issue 6167, page 174-178 ISSN 0036-8075 1095-9203 journal-article 2014 craaas https://doi.org/10.1126/science.1244341 2024-06-13T04:01:40Z Cold Glacier Growth Pine Island Glacier in Antarctica has thinned significantly during the last two decades and has provided a measurable contribution to sea-level rise as a result. Both glacier dynamics and climate are thought to be responsible for thinning, but exactly how they influence the glacier are incompletely known. Dutrieux et al. (p. 174 , published online 2 January) provide another layer of detail to our understanding of the process through observations of ocean temperatures in the surrounding waters. The thermocline adjacent in the sea adjacent to the glacier calving front (where ice is discharged) lowered by 250 meters in the austral summer of 2012. This change exposed the bottom of the ice shelf to colder surface waters rather than to the warmer, deeper layer, thereby reducing heat transfer from the ocean to the overlying ice and decreasing basal melting of the ice by more than 50% compared to 2010. Those 2012 ocean conditions were partly caused by a strong La Niña event, thus illustrating how important atmospheric variability is for regulating how the Antarctic Ice Sheet responds to climate change. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Pine Island Pine Island Glacier AAAS Resource Center (American Association for the Advancement of Science) Antarctic Austral Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) The Antarctic Science 343 6167 174 178 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Cold Glacier Growth Pine Island Glacier in Antarctica has thinned significantly during the last two decades and has provided a measurable contribution to sea-level rise as a result. Both glacier dynamics and climate are thought to be responsible for thinning, but exactly how they influence the glacier are incompletely known. Dutrieux et al. (p. 174 , published online 2 January) provide another layer of detail to our understanding of the process through observations of ocean temperatures in the surrounding waters. The thermocline adjacent in the sea adjacent to the glacier calving front (where ice is discharged) lowered by 250 meters in the austral summer of 2012. This change exposed the bottom of the ice shelf to colder surface waters rather than to the warmer, deeper layer, thereby reducing heat transfer from the ocean to the overlying ice and decreasing basal melting of the ice by more than 50% compared to 2010. Those 2012 ocean conditions were partly caused by a strong La Niña event, thus illustrating how important atmospheric variability is for regulating how the Antarctic Ice Sheet responds to climate change. |
format |
Article in Journal/Newspaper |
author |
Dutrieux, Pierre De Rydt, Jan Jenkins, Adrian Holland, Paul R. Ha, Ho Kyung Lee, Sang Hoon Steig, Eric J. Ding, Qinghua Abrahamsen, E. Povl Schröder, Michael |
spellingShingle |
Dutrieux, Pierre De Rydt, Jan Jenkins, Adrian Holland, Paul R. Ha, Ho Kyung Lee, Sang Hoon Steig, Eric J. Ding, Qinghua Abrahamsen, E. Povl Schröder, Michael Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability |
author_facet |
Dutrieux, Pierre De Rydt, Jan Jenkins, Adrian Holland, Paul R. Ha, Ho Kyung Lee, Sang Hoon Steig, Eric J. Ding, Qinghua Abrahamsen, E. Povl Schröder, Michael |
author_sort |
Dutrieux, Pierre |
title |
Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability |
title_short |
Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability |
title_full |
Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability |
title_fullStr |
Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability |
title_full_unstemmed |
Strong Sensitivity of Pine Island Ice-Shelf Melting to Climatic Variability |
title_sort |
strong sensitivity of pine island ice-shelf melting to climatic variability |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1126/science.1244341 https://www.science.org/doi/pdf/10.1126/science.1244341 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Antarctic Austral Pine Island Glacier The Antarctic |
geographic_facet |
Antarctic Austral Pine Island Glacier The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Pine Island Pine Island Glacier |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Pine Island Pine Island Glacier |
op_source |
Science volume 343, issue 6167, page 174-178 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1244341 |
container_title |
Science |
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343 |
container_issue |
6167 |
container_start_page |
174 |
op_container_end_page |
178 |
_version_ |
1802645552017440768 |