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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ftunivcam:oai:www.repository.cam.ac.uk:1810/343318 2024-02-04T09:57:45+01:00 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 2022-11-16T03:38:37Z application/pdf https://www.repository.cam.ac.uk/handle/1810/343318 https://doi.org/10.17863/CAM.90729 eng eng Springer Science and Business Media LLC http://dx.doi.org/10.1038/s41467-022-33231-x Nat Commun https://www.repository.cam.ac.uk/handle/1810/343318 doi:10.17863/CAM.90729 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ essn: 2041-1723 nlmid: 101528555 Arctic Regions Greenland Ice Cover Russia Svalbard Article 2022 ftunivcam https://doi.org/10.17863/CAM.90729 2024-01-11T23:32:43Z 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 glacier Greenland Ice Sheet Severnaya Zemlya Svalbard Apollo - University of Cambridge Repository Arctic Svalbard Greenland Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Austfonna ENVELOPE(24.559,24.559,79.835,79.835) |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Arctic Regions Greenland Ice Cover Russia Svalbard |
spellingShingle |
Arctic Regions Greenland Ice Cover Russia Svalbard 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 |
Arctic Regions Greenland Ice Cover Russia Svalbard |
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 |
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 |
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 |
Springer Science and Business Media LLC |
publishDate |
2022 |
url |
https://www.repository.cam.ac.uk/handle/1810/343318 https://doi.org/10.17863/CAM.90729 |
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 glacier Greenland Ice Sheet Severnaya Zemlya Svalbard |
genre_facet |
Arctic Austfonna glacier glacier glacier Greenland Ice Sheet Severnaya Zemlya Svalbard |
op_source |
essn: 2041-1723 nlmid: 101528555 |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/343318 doi:10.17863/CAM.90729 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.90729 |
_version_ |
1789962083816701952 |