Accumulation in coastal West Antarctic ice core records and the role of cyclone activity
Cyclones are an important component of Antarctic climate variability, yet quantifying their impact on the polar environment is challenging. We assess how cyclones which pass through the Bellingshausen Sea affect accumulation over Ellsworth Land, West Antarctica, where we have two ice core records. W...
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American Geophysical Union
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ftnerc:oai:nora.nerc.ac.uk:516852 2023-05-15T13:49:34+02:00 Accumulation in coastal West Antarctic ice core records and the role of cyclone activity Hosking, J. Scott Fogt, Ryan Thomas, Elizabeth R. Moosavi, Vahid Phillips, Tony Coggins, Jack Reusch, David 2017-09-16 text http://nora.nerc.ac.uk/id/eprint/516852/ https://nora.nerc.ac.uk/id/eprint/516852/1/Hosking_et_al-2017-Geophysical_Research_Letters.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017GL074722 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/516852/1/Hosking_et_al-2017-Geophysical_Research_Letters.pdf Hosking, J. Scott orcid:0000-0002-3646-3504 Fogt, Ryan; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Moosavi, Vahid; Phillips, Tony orcid:0000-0002-3058-9157 Coggins, Jack; Reusch, David. 2017 Accumulation in coastal West Antarctic ice core records and the role of cyclone activity. Geophysical Research Letters, 44 (17). 9084-9092. https://doi.org/10.1002/2017GL074722 <https://doi.org/10.1002/2017GL074722> Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1002/2017GL074722 2023-02-04T19:44:50Z Cyclones are an important component of Antarctic climate variability, yet quantifying their impact on the polar environment is challenging. We assess how cyclones which pass through the Bellingshausen Sea affect accumulation over Ellsworth Land, West Antarctica, where we have two ice core records. We use self-organizing maps (SOMs), an unsupervised machine learning technique, to group cyclones into nine SOM nodes differing by their trajectories (1980–2015). The annual frequency of cyclones associated with the first SOM node (SOM1, which generally originate from lower latitudes over the South Pacific Ocean) is significantly (p < 0.001) correlated with annual accumulation, with the highest seasonal correlations (p < 0.001) found during autumn. While significant (p < 0.01) increases in vertically integrated water vapor over the South Pacific Ocean coincide with this same group of cyclones, we find no indication that this has led to an increase in moisture advection into, nor accumulation over, Ellsworth Land over this short time period. Article in Journal/Newspaper Antarc* Antarctic Antarctica Bellingshausen Sea ice core West Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic West Antarctica Bellingshausen Sea Pacific Ellsworth Land ENVELOPE(-85.000,-85.000,-75.000,-75.000) Geophysical Research Letters 44 17 9084 9092 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Cyclones are an important component of Antarctic climate variability, yet quantifying their impact on the polar environment is challenging. We assess how cyclones which pass through the Bellingshausen Sea affect accumulation over Ellsworth Land, West Antarctica, where we have two ice core records. We use self-organizing maps (SOMs), an unsupervised machine learning technique, to group cyclones into nine SOM nodes differing by their trajectories (1980–2015). The annual frequency of cyclones associated with the first SOM node (SOM1, which generally originate from lower latitudes over the South Pacific Ocean) is significantly (p < 0.001) correlated with annual accumulation, with the highest seasonal correlations (p < 0.001) found during autumn. While significant (p < 0.01) increases in vertically integrated water vapor over the South Pacific Ocean coincide with this same group of cyclones, we find no indication that this has led to an increase in moisture advection into, nor accumulation over, Ellsworth Land over this short time period. |
format |
Article in Journal/Newspaper |
author |
Hosking, J. Scott Fogt, Ryan Thomas, Elizabeth R. Moosavi, Vahid Phillips, Tony Coggins, Jack Reusch, David |
spellingShingle |
Hosking, J. Scott Fogt, Ryan Thomas, Elizabeth R. Moosavi, Vahid Phillips, Tony Coggins, Jack Reusch, David Accumulation in coastal West Antarctic ice core records and the role of cyclone activity |
author_facet |
Hosking, J. Scott Fogt, Ryan Thomas, Elizabeth R. Moosavi, Vahid Phillips, Tony Coggins, Jack Reusch, David |
author_sort |
Hosking, J. Scott |
title |
Accumulation in coastal West Antarctic ice core records and the role of cyclone activity |
title_short |
Accumulation in coastal West Antarctic ice core records and the role of cyclone activity |
title_full |
Accumulation in coastal West Antarctic ice core records and the role of cyclone activity |
title_fullStr |
Accumulation in coastal West Antarctic ice core records and the role of cyclone activity |
title_full_unstemmed |
Accumulation in coastal West Antarctic ice core records and the role of cyclone activity |
title_sort |
accumulation in coastal west antarctic ice core records and the role of cyclone activity |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/516852/ https://nora.nerc.ac.uk/id/eprint/516852/1/Hosking_et_al-2017-Geophysical_Research_Letters.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017GL074722 |
long_lat |
ENVELOPE(-85.000,-85.000,-75.000,-75.000) |
geographic |
Antarctic West Antarctica Bellingshausen Sea Pacific Ellsworth Land |
geographic_facet |
Antarctic West Antarctica Bellingshausen Sea Pacific Ellsworth Land |
genre |
Antarc* Antarctic Antarctica Bellingshausen Sea ice core West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Bellingshausen Sea ice core West Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/516852/1/Hosking_et_al-2017-Geophysical_Research_Letters.pdf Hosking, J. Scott orcid:0000-0002-3646-3504 Fogt, Ryan; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Moosavi, Vahid; Phillips, Tony orcid:0000-0002-3058-9157 Coggins, Jack; Reusch, David. 2017 Accumulation in coastal West Antarctic ice core records and the role of cyclone activity. Geophysical Research Letters, 44 (17). 9084-9092. https://doi.org/10.1002/2017GL074722 <https://doi.org/10.1002/2017GL074722> |
op_doi |
https://doi.org/10.1002/2017GL074722 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
17 |
container_start_page |
9084 |
op_container_end_page |
9092 |
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1766251658408361984 |