The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020
In the Northern Hemisphere, ~1500 glaciers, accounting for 28% of glacierized area outside the Greenland Ice Sheet, terminate in the ocean. Glacier mass loss at their ice-ocean interface, known as frontal ablation, has not yet been comprehensively quantified. Here, we estimate decadal frontal ablati...
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ftpubmed:oai:pubmedcentral.nih.gov:9553960 2023-05-15T15:03:08+02:00 The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 Kochtitzky, William Copland, Luke Van Wychen, Wesley Hugonnet, Romain Hock, Regine Dowdeswell, Julian A. Benham, Toby Strozzi, Tazio Glazovsky, Andrey Lavrentiev, Ivan Rounce, David R. Millan, Romain Cook, Alison Dalton, Abigail Jiskoot, Hester Cooley, Jade Jania, Jacek Navarro, Francisco 2022-10-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553960/ https://doi.org/10.1038/s41467-022-33231-x en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553960/ http://dx.doi.org/10.1038/s41467-022-33231-x © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Nat Commun Article Text 2022 ftpubmed https://doi.org/10.1038/s41467-022-33231-x 2022-10-16T00:54:35Z In the Northern Hemisphere, ~1500 glaciers, accounting for 28% of glacierized area outside the Greenland Ice Sheet, terminate in the ocean. Glacier mass loss at their ice-ocean interface, known as frontal ablation, has not yet been comprehensively quantified. Here, we estimate decadal frontal ablation from measurements of ice discharge and terminus position change from 2000 to 2020. We bias-correct and cross-validate estimates and uncertainties using independent sources. Frontal ablation of marine-terminating glaciers contributed an average of 44.47 ± 6.23 Gt a(−1) of ice to the ocean from 2000 to 2010, and 51.98 ± 4.62 Gt a(−1) from 2010 to 2020. Ice discharge from 2000 to 2020 was equivalent to 2.10 ± 0.22 mm of sea-level rise and comprised approximately 79% of frontal ablation, with the remainder from terminus retreat. Near-coastal areas most impacted include Austfonna, Svalbard, and central Severnaya Zemlya, the Russian Arctic, and a few Alaskan fjords. Text Arctic Austfonna glacier glacier Greenland Ice Sheet Severnaya Zemlya Svalbard PubMed Central (PMC) Arctic Austfonna ENVELOPE(24.559,24.559,79.835,79.835) Greenland Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Svalbard Nature Communications 13 1 |
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Article Kochtitzky, William Copland, Luke Van Wychen, Wesley Hugonnet, Romain Hock, Regine Dowdeswell, Julian A. Benham, Toby Strozzi, Tazio Glazovsky, Andrey Lavrentiev, Ivan Rounce, David R. Millan, Romain Cook, Alison Dalton, Abigail Jiskoot, Hester Cooley, Jade Jania, Jacek Navarro, Francisco The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 |
topic_facet |
Article |
description |
In the Northern Hemisphere, ~1500 glaciers, accounting for 28% of glacierized area outside the Greenland Ice Sheet, terminate in the ocean. Glacier mass loss at their ice-ocean interface, known as frontal ablation, has not yet been comprehensively quantified. Here, we estimate decadal frontal ablation from measurements of ice discharge and terminus position change from 2000 to 2020. We bias-correct and cross-validate estimates and uncertainties using independent sources. Frontal ablation of marine-terminating glaciers contributed an average of 44.47 ± 6.23 Gt a(−1) of ice to the ocean from 2000 to 2010, and 51.98 ± 4.62 Gt a(−1) from 2010 to 2020. Ice discharge from 2000 to 2020 was equivalent to 2.10 ± 0.22 mm of sea-level rise and comprised approximately 79% of frontal ablation, with the remainder from terminus retreat. Near-coastal areas most impacted include Austfonna, Svalbard, and central Severnaya Zemlya, the Russian Arctic, and a few Alaskan fjords. |
format |
Text |
author |
Kochtitzky, William Copland, Luke Van Wychen, Wesley Hugonnet, Romain Hock, Regine Dowdeswell, Julian A. Benham, Toby Strozzi, Tazio Glazovsky, Andrey Lavrentiev, Ivan Rounce, David R. Millan, Romain Cook, Alison Dalton, Abigail Jiskoot, Hester Cooley, Jade Jania, Jacek Navarro, Francisco |
author_facet |
Kochtitzky, William Copland, Luke Van Wychen, Wesley Hugonnet, Romain Hock, Regine Dowdeswell, Julian A. Benham, Toby Strozzi, Tazio Glazovsky, Andrey Lavrentiev, Ivan Rounce, David R. Millan, Romain Cook, Alison Dalton, Abigail Jiskoot, Hester Cooley, Jade Jania, Jacek Navarro, Francisco |
author_sort |
Kochtitzky, William |
title |
The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 |
title_short |
The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 |
title_full |
The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 |
title_fullStr |
The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 |
title_full_unstemmed |
The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 |
title_sort |
unquantified mass loss of northern hemisphere marine-terminating glaciers from 2000–2020 |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553960/ https://doi.org/10.1038/s41467-022-33231-x |
long_lat |
ENVELOPE(24.559,24.559,79.835,79.835) ENVELOPE(98.000,98.000,79.500,79.500) |
geographic |
Arctic Austfonna Greenland Severnaya Zemlya Svalbard |
geographic_facet |
Arctic Austfonna Greenland Severnaya Zemlya Svalbard |
genre |
Arctic Austfonna glacier glacier Greenland Ice Sheet Severnaya Zemlya Svalbard |
genre_facet |
Arctic Austfonna glacier glacier Greenland Ice Sheet Severnaya Zemlya Svalbard |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553960/ http://dx.doi.org/10.1038/s41467-022-33231-x |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-022-33231-x |
container_title |
Nature Communications |
container_volume |
13 |
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1 |
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1766335030322266112 |