Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016
Glaciers distinct from the Greenland and Antarctic ice sheets cover an area of approximately 706,000 square kilometres globally(1), with an estimated total volume of 170,000 cubic kilometres, or 0.4 metres of potential sea-level-rise equivalent(2). Retreating and thinning glaciers are icons of clima...
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ftcemoa:oai:irsteadoc.irstea.fr:PUB00064400 2023-05-15T13:53:52+02:00 Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 Zemp, M. Huss, M. Thibert, E. Eckert, N. McNabb, R. Huber, J. Barandun, M. Machguth, H. Nussbaumer, S.U. Gartner-Roer, I. Thomson, L. Paul, F. Maussion, F. Kutuzov, S. Cogley, J.G. UNIVERSITY OF ZURICH CHE - IRSTEA GRENOBLE UR ETGR FRA UNIVERSITY OF OSLO NOR UNIVERSITY OF FRIBOURG CHE QUEENS UNIVERSITY CAN UNIVERSITY OF INNSBRUCK AUT RUSSIAN ACADEMY OF SCIENCE MOSCOW RUS TRENT UNIVERSITY CAN 2019 application/pdf https://irsteadoc.irstea.fr/cemoa/PUB00064400 Anglais eng http://dx.doi.org/10.1038/s41586-019-1071-0 https://irsteadoc.irstea.fr/cemoa/PUB00064400 Date de dépôt: 2020-02-28 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). 56725 BILAN DE MASSE VOLUME GLACIER weight breakdown Article de revue scientifique à comité de lecture 2019 ftcemoa https://doi.org/10.1038/s41586-019-1071-0 2021-06-29T12:47:34Z Glaciers distinct from the Greenland and Antarctic ice sheets cover an area of approximately 706,000 square kilometres globally(1), with an estimated total volume of 170,000 cubic kilometres, or 0.4 metres of potential sea-level-rise equivalent(2). Retreating and thinning glaciers are icons of climate change(3) and affect regional runoff(4) as well as global sea level(5,6). In past reports from the Intergovernmental Panel on Climate Change, estimates of changes in glacier mass were based on the multiplication of averaged or interpolated results from available observations of a few hundred glaciers by defined regional glacier areas(7-10). For data-scarce regions, these results had to be complemented with estimates based on satellite altimetry and gravimetry(11). These past approaches were challenged by the small number and heterogeneous spatiotemporal distribution of in situ measurement series and their often unknown ability to represent their respective mountain ranges, as well as by the spatial limitations of satellite altimetry (for which only point data are available) and gravimetry (with its coarse resolution). Here we use an extrapolation of glaciological and geodetic observations to show that glaciers contributed 27 +/- 22 millimetres to global mean sea-level rise from 1961 to 2016. Regional specific-mass-change rates for 2006-2016 range from -0.1 metres to -1.2 metres of water equivalent per year, resulting in a global sea-level contribution of 335 +/- 144 gigatonnes, or 0.92 +/- 0.39 millimetres, per year. Although statistical uncertainty ranges overlap, our conclusions suggest that glacier mass loss may be larger than previously reported(11.) The present glacier mass loss is equivalent to the sea-level contribution of the Greenland Ice Sheet(12), clearly exceeds the loss from the Antarctic Ice Sheet(13), and accounts for 25 to 30 per cent of the total observed sea-level rise(14). Present mass-loss rates indicate that glaciers could almost disappear in some mountain ranges in this century, while heavily glacierized regions will continue to contribute to sea-level rise beyond 2100. Article in Journal/Newspaper Antarc* Antarctic glacier Greenland Ice Sheet Irstea Publications et Bases documentaires (Irstea@doc/CemOA) Antarctic Greenland The Antarctic Nature 568 7752 382 386 |
institution |
Open Polar |
collection |
Irstea Publications et Bases documentaires (Irstea@doc/CemOA) |
op_collection_id |
ftcemoa |
language |
English |
topic |
BILAN DE MASSE VOLUME GLACIER weight breakdown |
spellingShingle |
BILAN DE MASSE VOLUME GLACIER weight breakdown Zemp, M. Huss, M. Thibert, E. Eckert, N. McNabb, R. Huber, J. Barandun, M. Machguth, H. Nussbaumer, S.U. Gartner-Roer, I. Thomson, L. Paul, F. Maussion, F. Kutuzov, S. Cogley, J.G. Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 |
topic_facet |
BILAN DE MASSE VOLUME GLACIER weight breakdown |
description |
Glaciers distinct from the Greenland and Antarctic ice sheets cover an area of approximately 706,000 square kilometres globally(1), with an estimated total volume of 170,000 cubic kilometres, or 0.4 metres of potential sea-level-rise equivalent(2). Retreating and thinning glaciers are icons of climate change(3) and affect regional runoff(4) as well as global sea level(5,6). In past reports from the Intergovernmental Panel on Climate Change, estimates of changes in glacier mass were based on the multiplication of averaged or interpolated results from available observations of a few hundred glaciers by defined regional glacier areas(7-10). For data-scarce regions, these results had to be complemented with estimates based on satellite altimetry and gravimetry(11). These past approaches were challenged by the small number and heterogeneous spatiotemporal distribution of in situ measurement series and their often unknown ability to represent their respective mountain ranges, as well as by the spatial limitations of satellite altimetry (for which only point data are available) and gravimetry (with its coarse resolution). Here we use an extrapolation of glaciological and geodetic observations to show that glaciers contributed 27 +/- 22 millimetres to global mean sea-level rise from 1961 to 2016. Regional specific-mass-change rates for 2006-2016 range from -0.1 metres to -1.2 metres of water equivalent per year, resulting in a global sea-level contribution of 335 +/- 144 gigatonnes, or 0.92 +/- 0.39 millimetres, per year. Although statistical uncertainty ranges overlap, our conclusions suggest that glacier mass loss may be larger than previously reported(11.) The present glacier mass loss is equivalent to the sea-level contribution of the Greenland Ice Sheet(12), clearly exceeds the loss from the Antarctic Ice Sheet(13), and accounts for 25 to 30 per cent of the total observed sea-level rise(14). Present mass-loss rates indicate that glaciers could almost disappear in some mountain ranges in this century, while heavily glacierized regions will continue to contribute to sea-level rise beyond 2100. |
author2 |
UNIVERSITY OF ZURICH CHE - IRSTEA GRENOBLE UR ETGR FRA UNIVERSITY OF OSLO NOR UNIVERSITY OF FRIBOURG CHE QUEENS UNIVERSITY CAN UNIVERSITY OF INNSBRUCK AUT RUSSIAN ACADEMY OF SCIENCE MOSCOW RUS TRENT UNIVERSITY CAN |
format |
Article in Journal/Newspaper |
author |
Zemp, M. Huss, M. Thibert, E. Eckert, N. McNabb, R. Huber, J. Barandun, M. Machguth, H. Nussbaumer, S.U. Gartner-Roer, I. Thomson, L. Paul, F. Maussion, F. Kutuzov, S. Cogley, J.G. |
author_facet |
Zemp, M. Huss, M. Thibert, E. Eckert, N. McNabb, R. Huber, J. Barandun, M. Machguth, H. Nussbaumer, S.U. Gartner-Roer, I. Thomson, L. Paul, F. Maussion, F. Kutuzov, S. Cogley, J.G. |
author_sort |
Zemp, M. |
title |
Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 |
title_short |
Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 |
title_full |
Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 |
title_fullStr |
Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 |
title_full_unstemmed |
Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 |
title_sort |
global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 |
publishDate |
2019 |
url |
https://irsteadoc.irstea.fr/cemoa/PUB00064400 |
geographic |
Antarctic Greenland The Antarctic |
geographic_facet |
Antarctic Greenland The Antarctic |
genre |
Antarc* Antarctic glacier Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic glacier Greenland Ice Sheet |
op_source |
56725 |
op_relation |
http://dx.doi.org/10.1038/s41586-019-1071-0 https://irsteadoc.irstea.fr/cemoa/PUB00064400 |
op_rights |
Date de dépôt: 2020-02-28 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). |
op_doi |
https://doi.org/10.1038/s41586-019-1071-0 |
container_title |
Nature |
container_volume |
568 |
container_issue |
7752 |
container_start_page |
382 |
op_container_end_page |
386 |
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1766259325873946624 |