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...
Main Authors: | , , , , , , , , , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11850/575461 https://doi.org/10.3929/ethz-b-000575461 |
id |
ftethz:oai:www.research-collection.ethz.ch:20.500.11850/575461 |
---|---|
record_format |
openpolar |
spelling |
ftethz:oai:www.research-collection.ethz.ch:20.500.11850/575461 2023-05-15T15:04:10+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 application/application/pdf https://hdl.handle.net/20.500.11850/575461 https://doi.org/10.3929/ethz-b-000575461 en eng Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-022-33231-x info:eu-repo/semantics/altIdentifier/wos/000866124200012 http://hdl.handle.net/20.500.11850/575461 doi:10.3929/ethz-b-000575461 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International CC-BY Nature Communications, 13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftethz https://doi.org/20.500.11850/575461 https://doi.org/10.3929/ethz-b-000575461 https://doi.org/10.1038/s41467-022-33231-x 2023-02-13T01:13:13Z 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. ISSN:2041-1723 Article in Journal/Newspaper Arctic Austfonna glacier glacier Greenland Ice Sheet Severnaya Zemlya Svalbard ETH Zürich Research Collection Arctic Austfonna ENVELOPE(24.559,24.559,79.835,79.835) Greenland Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Svalbard |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
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. ISSN:2041-1723 |
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 |
publishDate |
2022 |
url |
https://hdl.handle.net/20.500.11850/575461 https://doi.org/10.3929/ethz-b-000575461 |
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 |
Nature Communications, 13 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-022-33231-x info:eu-repo/semantics/altIdentifier/wos/000866124200012 http://hdl.handle.net/20.500.11850/575461 doi:10.3929/ethz-b-000575461 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.11850/575461 https://doi.org/10.3929/ethz-b-000575461 https://doi.org/10.1038/s41467-022-33231-x |
_version_ |
1766335987221266432 |