Accelerated global glacier mass loss in the early twenty-first century
International audience Glaciers distinct from the Greenland and Antarctic ice sheets are shrinking rapidly, altering regional hydrology1, raising global sea level2 and elevating natural hazards3. Yet, owing to the scarcity of constrained mass loss observations, glacier evolution during the satellite...
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Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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Online Access: | https://insu.hal.science/insu-03214987 https://doi.org/10.1038/s41586-021-03436-z |
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Institut national des sciences de l'Univers: HAL-INSU |
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[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Hugonnet, Romain Mcnabb, Robert Berthier, Etienne Menounos, Brian Nuth, Christopher Girod, Luc Farinotti, Daniel Huss, Matthias Dussaillant, Ines Brun, Fanny Kääb, Andreas Accelerated global glacier mass loss in the early twenty-first century |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Glaciers distinct from the Greenland and Antarctic ice sheets are shrinking rapidly, altering regional hydrology1, raising global sea level2 and elevating natural hazards3. Yet, owing to the scarcity of constrained mass loss observations, glacier evolution during the satellite era is known only partially, as a geographic and temporal patchwork4,5. Here we reveal the accelerated, albeit contrasting, patterns of glacier mass loss during the early twenty-first century. Using largely untapped satellite archives, we chart surface elevation changes at a high spatiotemporal resolution over all of Earth’s glaciers. We extensively validate our estimates against independent, high-precision measurements and present a globally complete and consistent estimate of glacier mass change. We show that during 2000–2019, glaciers lost a mass of 267 ± 16 gigatonnes per year, equivalent to 21 ± 3 per cent of the observed sea-level rise6. We identify a mass loss acceleration of 48 ± 16 gigatonnes per year per decade, explaining 6 to 19 per cent of the observed acceleration of sea-level rise. Particularly, thinning rates of glaciers outside ice sheet peripheries doubled over the past two decades. Glaciers currently lose more mass, and at similar or larger acceleration rates, than the Greenland or Antarctic ice sheets taken separately7,8,9. By uncovering the patterns of mass change in many regions, we find contrasting glacier fluctuations that agree with the decadal variability in precipitation and temperature. These include a North Atlantic anomaly of decelerated mass loss, a strongly accelerated loss from northwestern American glaciers, and the apparent end of the Karakoram anomaly of mass gain10. We anticipate our highly resolved estimates to advance the understanding of drivers that govern the distribution of glacier change, and to extend our capabilities of predicting these changes at all scales. Predictions robustly benchmarked against observations are critically needed to design adaptive policies for the ... |
author2 |
Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) ANR-10-EQPX-0020,GEOSUD,GEOSUD : Infrastructure nationale d'imagerie satellitaire pour la recherche sur l'environnement et les territoires et ses applications à la gestion et aux politiques publiques(2010) European Project: 320816,EC:FP7:ERC,ERC-2012-ADG_20120216,ICEMASS(2013) |
format |
Article in Journal/Newspaper |
author |
Hugonnet, Romain Mcnabb, Robert Berthier, Etienne Menounos, Brian Nuth, Christopher Girod, Luc Farinotti, Daniel Huss, Matthias Dussaillant, Ines Brun, Fanny Kääb, Andreas |
author_facet |
Hugonnet, Romain Mcnabb, Robert Berthier, Etienne Menounos, Brian Nuth, Christopher Girod, Luc Farinotti, Daniel Huss, Matthias Dussaillant, Ines Brun, Fanny Kääb, Andreas |
author_sort |
Hugonnet, Romain |
title |
Accelerated global glacier mass loss in the early twenty-first century |
title_short |
Accelerated global glacier mass loss in the early twenty-first century |
title_full |
Accelerated global glacier mass loss in the early twenty-first century |
title_fullStr |
Accelerated global glacier mass loss in the early twenty-first century |
title_full_unstemmed |
Accelerated global glacier mass loss in the early twenty-first century |
title_sort |
accelerated global glacier mass loss in the early twenty-first century |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03214987 https://doi.org/10.1038/s41586-021-03436-z |
genre |
Antarc* Antarctic glacier Greenland Ice Sheet North Atlantic |
genre_facet |
Antarc* Antarctic glacier Greenland Ice Sheet North Atlantic |
op_source |
ISSN: 0028-0836 EISSN: 1476-4687 Nature https://insu.hal.science/insu-03214987 Nature, 2021, 592 (7856), pp.726-731. ⟨10.1038/s41586-021-03436-z⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41586-021-03436-z info:eu-repo/grantAgreement/EC/FP7/320816/EU/Global Glacier Mass Continuity/ICEMASS insu-03214987 https://insu.hal.science/insu-03214987 doi:10.1038/s41586-021-03436-z |
op_doi |
https://doi.org/10.1038/s41586-021-03436-z |
container_title |
Nature |
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592 |
container_issue |
7856 |
container_start_page |
726 |
op_container_end_page |
731 |
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1797584580779180032 |
spelling |
ftinsu:oai:HAL:insu-03214987v1 2024-04-28T07:56:43+00:00 Accelerated global glacier mass loss in the early twenty-first century Hugonnet, Romain Mcnabb, Robert Berthier, Etienne Menounos, Brian Nuth, Christopher Girod, Luc Farinotti, Daniel Huss, Matthias Dussaillant, Ines Brun, Fanny Kääb, Andreas Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) ANR-10-EQPX-0020,GEOSUD,GEOSUD : Infrastructure nationale d'imagerie satellitaire pour la recherche sur l'environnement et les territoires et ses applications à la gestion et aux politiques publiques(2010) European Project: 320816,EC:FP7:ERC,ERC-2012-ADG_20120216,ICEMASS(2013) 2021-04-29 https://insu.hal.science/insu-03214987 https://doi.org/10.1038/s41586-021-03436-z en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41586-021-03436-z info:eu-repo/grantAgreement/EC/FP7/320816/EU/Global Glacier Mass Continuity/ICEMASS insu-03214987 https://insu.hal.science/insu-03214987 doi:10.1038/s41586-021-03436-z ISSN: 0028-0836 EISSN: 1476-4687 Nature https://insu.hal.science/insu-03214987 Nature, 2021, 592 (7856), pp.726-731. ⟨10.1038/s41586-021-03436-z⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2021 ftinsu https://doi.org/10.1038/s41586-021-03436-z 2024-04-05T00:37:31Z International audience Glaciers distinct from the Greenland and Antarctic ice sheets are shrinking rapidly, altering regional hydrology1, raising global sea level2 and elevating natural hazards3. Yet, owing to the scarcity of constrained mass loss observations, glacier evolution during the satellite era is known only partially, as a geographic and temporal patchwork4,5. Here we reveal the accelerated, albeit contrasting, patterns of glacier mass loss during the early twenty-first century. Using largely untapped satellite archives, we chart surface elevation changes at a high spatiotemporal resolution over all of Earth’s glaciers. We extensively validate our estimates against independent, high-precision measurements and present a globally complete and consistent estimate of glacier mass change. We show that during 2000–2019, glaciers lost a mass of 267 ± 16 gigatonnes per year, equivalent to 21 ± 3 per cent of the observed sea-level rise6. We identify a mass loss acceleration of 48 ± 16 gigatonnes per year per decade, explaining 6 to 19 per cent of the observed acceleration of sea-level rise. Particularly, thinning rates of glaciers outside ice sheet peripheries doubled over the past two decades. Glaciers currently lose more mass, and at similar or larger acceleration rates, than the Greenland or Antarctic ice sheets taken separately7,8,9. By uncovering the patterns of mass change in many regions, we find contrasting glacier fluctuations that agree with the decadal variability in precipitation and temperature. These include a North Atlantic anomaly of decelerated mass loss, a strongly accelerated loss from northwestern American glaciers, and the apparent end of the Karakoram anomaly of mass gain10. We anticipate our highly resolved estimates to advance the understanding of drivers that govern the distribution of glacier change, and to extend our capabilities of predicting these changes at all scales. Predictions robustly benchmarked against observations are critically needed to design adaptive policies for the ... Article in Journal/Newspaper Antarc* Antarctic glacier Greenland Ice Sheet North Atlantic Institut national des sciences de l'Univers: HAL-INSU Nature 592 7856 726 731 |