Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf
Over the period 2003–2008, the Totten Ice Shelf (TIS) was shown to be rapidly thinning, likely due to basal melting. However, a recent study using a longer time series found high interannual variability present in TIS surface elevation without any apparent trend. Here we show that low-frequency intr...
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ftpubmed:oai:pubmedcentral.nih.gov:6081466 2023-05-15T16:41:52+02:00 Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf Gwyther, David E. O’Kane, Terence J. Galton-Fenzi, Benjamin K. Monselesan, Didier P. Greenbaum, Jamin S. 2018-08-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6081466/ http://www.ncbi.nlm.nih.gov/pubmed/30087352 https://doi.org/10.1038/s41467-018-05618-2 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6081466/ http://www.ncbi.nlm.nih.gov/pubmed/30087352 http://dx.doi.org/10.1038/s41467-018-05618-2 © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-05618-2 2018-08-12T00:34:02Z Over the period 2003–2008, the Totten Ice Shelf (TIS) was shown to be rapidly thinning, likely due to basal melting. However, a recent study using a longer time series found high interannual variability present in TIS surface elevation without any apparent trend. Here we show that low-frequency intrinsic ocean variability potentially accounts for a large fraction of the variability in the basal melting of TIS. Specifically, numerical ocean model simulations show that up to 44% of the modelled variability in basal melting in the 1–5 year timescale (and up to 21% in the 5–10 year timescale) is intrinsic, with a similar response to the full climate forcing. We identify the important role of intrinsic ocean variability in setting the observed interannual variation in TIS surface thickness and velocity. Our results further demonstrate the need to account for intrinsic ocean processes in the detection and attribution of change. Text Ice Shelf Totten Glacier Totten Ice Shelf PubMed Central (PMC) Totten Glacier ENVELOPE(116.333,116.333,-66.833,-66.833) Nature Communications 9 1 |
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English |
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Article Gwyther, David E. O’Kane, Terence J. Galton-Fenzi, Benjamin K. Monselesan, Didier P. Greenbaum, Jamin S. Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf |
topic_facet |
Article |
description |
Over the period 2003–2008, the Totten Ice Shelf (TIS) was shown to be rapidly thinning, likely due to basal melting. However, a recent study using a longer time series found high interannual variability present in TIS surface elevation without any apparent trend. Here we show that low-frequency intrinsic ocean variability potentially accounts for a large fraction of the variability in the basal melting of TIS. Specifically, numerical ocean model simulations show that up to 44% of the modelled variability in basal melting in the 1–5 year timescale (and up to 21% in the 5–10 year timescale) is intrinsic, with a similar response to the full climate forcing. We identify the important role of intrinsic ocean variability in setting the observed interannual variation in TIS surface thickness and velocity. Our results further demonstrate the need to account for intrinsic ocean processes in the detection and attribution of change. |
format |
Text |
author |
Gwyther, David E. O’Kane, Terence J. Galton-Fenzi, Benjamin K. Monselesan, Didier P. Greenbaum, Jamin S. |
author_facet |
Gwyther, David E. O’Kane, Terence J. Galton-Fenzi, Benjamin K. Monselesan, Didier P. Greenbaum, Jamin S. |
author_sort |
Gwyther, David E. |
title |
Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf |
title_short |
Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf |
title_full |
Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf |
title_fullStr |
Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf |
title_full_unstemmed |
Intrinsic processes drive variability in basal melting of the Totten Glacier Ice Shelf |
title_sort |
intrinsic processes drive variability in basal melting of the totten glacier ice shelf |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6081466/ http://www.ncbi.nlm.nih.gov/pubmed/30087352 https://doi.org/10.1038/s41467-018-05618-2 |
long_lat |
ENVELOPE(116.333,116.333,-66.833,-66.833) |
geographic |
Totten Glacier |
geographic_facet |
Totten Glacier |
genre |
Ice Shelf Totten Glacier Totten Ice Shelf |
genre_facet |
Ice Shelf Totten Glacier Totten Ice Shelf |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6081466/ http://www.ncbi.nlm.nih.gov/pubmed/30087352 http://dx.doi.org/10.1038/s41467-018-05618-2 |
op_rights |
© The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-05618-2 |
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Nature Communications |
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9 |
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1 |
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1766032330734960640 |