Centennial response of Greenland’s three largest outlet glaciers
The Greenland Ice Sheet is the largest land ice contributor to sea level rise. This will continue in the future but at an uncertain rate and observational estimates are limited to the last few decades. Understanding the long-term glacier response to external forcing is key to improving projections....
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ftpubmed:oai:pubmedcentral.nih.gov:7672108 2023-05-15T16:21:11+02:00 Centennial response of Greenland’s three largest outlet glaciers Khan, Shfaqat A. Bjørk, Anders A. Bamber, Jonathan L. Morlighem, Mathieu Bevis, Michael Kjær, Kurt H. Mouginot, Jérémie Løkkegaard, Anja Holland, David M. Aschwanden, Andy Zhang, Bao Helm, Veit Korsgaard, Niels J. Colgan, William Larsen, Nicolaj K. Liu, Lin Hansen, Karina Barletta, Valentina Dahl-Jensen, Trine S. Søndergaard, Anne Sofie Csatho, Beata M. Sasgen, Ingo Box, Jason Schenk, Toni 2020-11-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672108/ http://www.ncbi.nlm.nih.gov/pubmed/33203883 https://doi.org/10.1038/s41467-020-19580-5 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672108/ http://www.ncbi.nlm.nih.gov/pubmed/33203883 http://dx.doi.org/10.1038/s41467-020-19580-5 © The Author(s) 2020 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 Nat Commun Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-19580-5 2020-11-29T01:21:07Z The Greenland Ice Sheet is the largest land ice contributor to sea level rise. This will continue in the future but at an uncertain rate and observational estimates are limited to the last few decades. Understanding the long-term glacier response to external forcing is key to improving projections. Here we use historical photographs to calculate ice loss from 1880–2012 for Jakobshavn, Helheim, and Kangerlussuaq glacier. We estimate ice loss corresponding to a sea level rise of 8.1 ± 1.1 millimetres from these three glaciers. Projections of mass loss for these glaciers, using the worst-case scenario, Representative Concentration Pathways 8.5, suggest a sea level contribution of 9.1–14.9 mm by 2100. RCP8.5 implies an additional global temperature increase of 3.7 °C by 2100, approximately four times larger than that which has taken place since 1880. We infer that projections forced by RCP8.5 underestimate glacier mass loss which could exceed this worst-case scenario. Text glacier Greenland Ice Sheet Jakobshavn Kangerlussuaq PubMed Central (PMC) Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Nature Communications 11 1 |
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Article Khan, Shfaqat A. Bjørk, Anders A. Bamber, Jonathan L. Morlighem, Mathieu Bevis, Michael Kjær, Kurt H. Mouginot, Jérémie Løkkegaard, Anja Holland, David M. Aschwanden, Andy Zhang, Bao Helm, Veit Korsgaard, Niels J. Colgan, William Larsen, Nicolaj K. Liu, Lin Hansen, Karina Barletta, Valentina Dahl-Jensen, Trine S. Søndergaard, Anne Sofie Csatho, Beata M. Sasgen, Ingo Box, Jason Schenk, Toni Centennial response of Greenland’s three largest outlet glaciers |
topic_facet |
Article |
description |
The Greenland Ice Sheet is the largest land ice contributor to sea level rise. This will continue in the future but at an uncertain rate and observational estimates are limited to the last few decades. Understanding the long-term glacier response to external forcing is key to improving projections. Here we use historical photographs to calculate ice loss from 1880–2012 for Jakobshavn, Helheim, and Kangerlussuaq glacier. We estimate ice loss corresponding to a sea level rise of 8.1 ± 1.1 millimetres from these three glaciers. Projections of mass loss for these glaciers, using the worst-case scenario, Representative Concentration Pathways 8.5, suggest a sea level contribution of 9.1–14.9 mm by 2100. RCP8.5 implies an additional global temperature increase of 3.7 °C by 2100, approximately four times larger than that which has taken place since 1880. We infer that projections forced by RCP8.5 underestimate glacier mass loss which could exceed this worst-case scenario. |
format |
Text |
author |
Khan, Shfaqat A. Bjørk, Anders A. Bamber, Jonathan L. Morlighem, Mathieu Bevis, Michael Kjær, Kurt H. Mouginot, Jérémie Løkkegaard, Anja Holland, David M. Aschwanden, Andy Zhang, Bao Helm, Veit Korsgaard, Niels J. Colgan, William Larsen, Nicolaj K. Liu, Lin Hansen, Karina Barletta, Valentina Dahl-Jensen, Trine S. Søndergaard, Anne Sofie Csatho, Beata M. Sasgen, Ingo Box, Jason Schenk, Toni |
author_facet |
Khan, Shfaqat A. Bjørk, Anders A. Bamber, Jonathan L. Morlighem, Mathieu Bevis, Michael Kjær, Kurt H. Mouginot, Jérémie Løkkegaard, Anja Holland, David M. Aschwanden, Andy Zhang, Bao Helm, Veit Korsgaard, Niels J. Colgan, William Larsen, Nicolaj K. Liu, Lin Hansen, Karina Barletta, Valentina Dahl-Jensen, Trine S. Søndergaard, Anne Sofie Csatho, Beata M. Sasgen, Ingo Box, Jason Schenk, Toni |
author_sort |
Khan, Shfaqat A. |
title |
Centennial response of Greenland’s three largest outlet glaciers |
title_short |
Centennial response of Greenland’s three largest outlet glaciers |
title_full |
Centennial response of Greenland’s three largest outlet glaciers |
title_fullStr |
Centennial response of Greenland’s three largest outlet glaciers |
title_full_unstemmed |
Centennial response of Greenland’s three largest outlet glaciers |
title_sort |
centennial response of greenland’s three largest outlet glaciers |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672108/ http://www.ncbi.nlm.nih.gov/pubmed/33203883 https://doi.org/10.1038/s41467-020-19580-5 |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Greenland Kangerlussuaq |
geographic_facet |
Greenland Kangerlussuaq |
genre |
glacier Greenland Ice Sheet Jakobshavn Kangerlussuaq |
genre_facet |
glacier Greenland Ice Sheet Jakobshavn Kangerlussuaq |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672108/ http://www.ncbi.nlm.nih.gov/pubmed/33203883 http://dx.doi.org/10.1038/s41467-020-19580-5 |
op_rights |
© The Author(s) 2020 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/s41467-020-19580-5 |
container_title |
Nature Communications |
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11 |
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1 |
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1766009192867430400 |