Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica
Satellite data and a 35-year hindcast of the Amundsen Sea Embayment summer climate using the Weather Research and Forecasting model are used to understand how regional and large-scale atmospheric variability affects thinning of ice shelves in this sector of West Antarctica by melting from above and...
Published in: | Geophysical Research Letters |
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Language: | English |
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2018
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/68107/ https://ueaeprints.uea.ac.uk/id/eprint/68107/1/SummerMelting_WA_2018GL077092.pdf https://doi.org/10.1029/2018GL077092 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:68107 2023-05-15T13:23:31+02:00 Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica Deb, Pranab Orr, Andrew Bromwich, David H. Nicolas, Julien P. Turner, John Hosking, J. Scott 2018-05-16 application/pdf https://ueaeprints.uea.ac.uk/id/eprint/68107/ https://ueaeprints.uea.ac.uk/id/eprint/68107/1/SummerMelting_WA_2018GL077092.pdf https://doi.org/10.1029/2018GL077092 en eng https://ueaeprints.uea.ac.uk/id/eprint/68107/1/SummerMelting_WA_2018GL077092.pdf Deb, Pranab, Orr, Andrew, Bromwich, David H., Nicolas, Julien P., Turner, John and Hosking, J. Scott (2018) Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica. Geophysical Research Letters, 45 (9). pp. 4124-4133. ISSN 0094-8276 doi:10.1029/2018GL077092 Article PeerReviewed 2018 ftuniveastangl https://doi.org/10.1029/2018GL077092 2023-01-30T21:48:51Z Satellite data and a 35-year hindcast of the Amundsen Sea Embayment summer climate using the Weather Research and Forecasting model are used to understand how regional and large-scale atmospheric variability affects thinning of ice shelves in this sector of West Antarctica by melting from above and below (linked to intrusions of warm water caused by anomalous westerlies over the continental shelf edge). El Nino episodes are associated with an increase in surface melt but do not have a statistically significant impact on westerly winds over the continental shelf edge. The location of the Amundsen Sea Low and the polarity of the Southern Annular Mode (SAM) have negligible impact on surface melting, although a positive SAM and eastward shift of the Amundsen Sea Low cause anomalous westerlies over the continental shelf edge. The projected future increase in El Nino episodes and positive SAM could therefore increase the risk of disintegration of West Antarctic ice shelves. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica Ice Shelf Ice Shelves West Antarctica University of East Anglia: UEA Digital Repository Amundsen Sea Antarctic West Antarctica Geophysical Research Letters 45 9 4124 4133 |
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Open Polar |
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University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
English |
description |
Satellite data and a 35-year hindcast of the Amundsen Sea Embayment summer climate using the Weather Research and Forecasting model are used to understand how regional and large-scale atmospheric variability affects thinning of ice shelves in this sector of West Antarctica by melting from above and below (linked to intrusions of warm water caused by anomalous westerlies over the continental shelf edge). El Nino episodes are associated with an increase in surface melt but do not have a statistically significant impact on westerly winds over the continental shelf edge. The location of the Amundsen Sea Low and the polarity of the Southern Annular Mode (SAM) have negligible impact on surface melting, although a positive SAM and eastward shift of the Amundsen Sea Low cause anomalous westerlies over the continental shelf edge. The projected future increase in El Nino episodes and positive SAM could therefore increase the risk of disintegration of West Antarctic ice shelves. |
format |
Article in Journal/Newspaper |
author |
Deb, Pranab Orr, Andrew Bromwich, David H. Nicolas, Julien P. Turner, John Hosking, J. Scott |
spellingShingle |
Deb, Pranab Orr, Andrew Bromwich, David H. Nicolas, Julien P. Turner, John Hosking, J. Scott Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica |
author_facet |
Deb, Pranab Orr, Andrew Bromwich, David H. Nicolas, Julien P. Turner, John Hosking, J. Scott |
author_sort |
Deb, Pranab |
title |
Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica |
title_short |
Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica |
title_full |
Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica |
title_fullStr |
Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica |
title_full_unstemmed |
Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica |
title_sort |
summer drivers of atmospheric variability affecting ice shelf thinning in the amundsen sea embayment, west antarctica |
publishDate |
2018 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/68107/ https://ueaeprints.uea.ac.uk/id/eprint/68107/1/SummerMelting_WA_2018GL077092.pdf https://doi.org/10.1029/2018GL077092 |
geographic |
Amundsen Sea Antarctic West Antarctica |
geographic_facet |
Amundsen Sea Antarctic West Antarctica |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Ice Shelf Ice Shelves West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Ice Shelf Ice Shelves West Antarctica |
op_relation |
https://ueaeprints.uea.ac.uk/id/eprint/68107/1/SummerMelting_WA_2018GL077092.pdf Deb, Pranab, Orr, Andrew, Bromwich, David H., Nicolas, Julien P., Turner, John and Hosking, J. Scott (2018) Summer drivers of atmospheric variability affecting ice shelf thinning in the Amundsen Sea Embayment, West Antarctica. Geophysical Research Letters, 45 (9). pp. 4124-4133. ISSN 0094-8276 doi:10.1029/2018GL077092 |
op_doi |
https://doi.org/10.1029/2018GL077092 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
9 |
container_start_page |
4124 |
op_container_end_page |
4133 |
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1766372833882013696 |