The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020
Abstract 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 front...
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ftoslouniv:oai:www.duo.uio.no:10852/100561 2024-09-30T14:31:03+00:00 The unquantified mass loss of Northern Hemisphere marine-terminating glaciers from 2000–2020 ENEngelskEnglishThe 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 2022-11-23T08:54:41Z http://hdl.handle.net/10852/100561 https://doi.org/10.1038/s41467-022-33231-x EN eng Nature Portfolio 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. Nature Communications. 2022, 13(1) http://hdl.handle.net/10852/100561 2078823 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature Communications&rft.volume=13&rft.spage=&rft.date=2022 Nature Communications 13 1 10 https://doi.org/10.1038/s41467-022-33231-x Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 2041-1723 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.1038/s41467-022-33231-x 2024-09-12T05:44:05Z Abstract 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. Article in Journal/Newspaper Arctic Austfonna glacier glacier Greenland Ice Sheet Severnaya Zemlya Svalbard Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Svalbard Greenland Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Austfonna ENVELOPE(24.559,24.559,79.835,79.835) Nature Communications 13 1 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract 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 |
Article in Journal/Newspaper |
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 |
spellingShingle |
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 |
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 Portfolio |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/100561 https://doi.org/10.1038/s41467-022-33231-x |
long_lat |
ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(24.559,24.559,79.835,79.835) |
geographic |
Arctic Svalbard Greenland Severnaya Zemlya Austfonna |
geographic_facet |
Arctic Svalbard Greenland Severnaya Zemlya Austfonna |
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 |
2041-1723 |
op_relation |
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. Nature Communications. 2022, 13(1) http://hdl.handle.net/10852/100561 2078823 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature Communications&rft.volume=13&rft.spage=&rft.date=2022 Nature Communications 13 1 10 https://doi.org/10.1038/s41467-022-33231-x |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1038/s41467-022-33231-x |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
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1811635731516358656 |