Recent contributions of glaciers and ice caps to sea level rise
Glaciers and ice caps (GICs) are important contributors to present-day global mean sea level rise. Most previous global mass balance estimates for GICs rely on extrapolation of sparse mass balance measurements representing only a small fraction of the GIC area, leaving their overall contribution to...
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-720 https://doi.org/10.1038/nature10847 |
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ftncar:oai:drupal-site.org:articles_11956 2023-09-05T13:13:43+02:00 Recent contributions of glaciers and ice caps to sea level rise Jacob, Thomas (author) Wahr, John (author) Pfeffer, W. (author) Swenson, Sean (author) 2012-02-08 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-720 https://doi.org/10.1038/nature10847 en eng Nature Publishing Group Nature http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-720 doi:10.1038/nature10847 ark:/85065/d7668dwq Copyright 2012 Author(s). Published under license by the Nature Publishing Group. Text article 2012 ftncar https://doi.org/10.1038/nature10847 2023-08-14T18:38:01Z Glaciers and ice caps (GICs) are important contributors to present-day global mean sea level rise. Most previous global mass balance estimates for GICs rely on extrapolation of sparse mass balance measurements representing only a small fraction of the GIC area, leaving their overall contribution to sea level rise unclear. Here we show that GICs, excluding the Greenland and Antarctic peripheral GICs, lost mass at a rate of 148±30Gtyr⁻¹ from January 2003 to December 2010, contributing 0.41±0.08mm yr⁻¹ to sea level rise. Our results are based on a global, simultaneous inversion of monthly GRACE-derived satellite gravity fields, from which we calculate the mass change over all ice-covered regions greater in area than 100km². The GIC rate for 2003-2010 is about 30 per cent smaller than the previous mass balance estimate that most closely matches our study period. The high mountains of Asia, in particular, show a mass loss of only 4±20 Gt yr⁻¹ for 2003-2010, compared with 47-55 Gt yr⁻¹ in previously published estimates. For completeness, we also estimate that the Greenland and Antarctic ice sheets, including their peripheral GICs, contributed 1.06±0.19 mm yr⁻¹ to sea level rise over the same time period. The total contribution to sea level rise from all ice-covered regions is thus 1.48±0.26 mm⁻¹, which agrees well with independent estimates of sea level rise originating from land ice loss and other terrestrial sources. Article in Journal/Newspaper Antarc* Antarctic Greenland OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Greenland Nature 482 7386 514 518 |
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Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Glaciers and ice caps (GICs) are important contributors to present-day global mean sea level rise. Most previous global mass balance estimates for GICs rely on extrapolation of sparse mass balance measurements representing only a small fraction of the GIC area, leaving their overall contribution to sea level rise unclear. Here we show that GICs, excluding the Greenland and Antarctic peripheral GICs, lost mass at a rate of 148±30Gtyr⁻¹ from January 2003 to December 2010, contributing 0.41±0.08mm yr⁻¹ to sea level rise. Our results are based on a global, simultaneous inversion of monthly GRACE-derived satellite gravity fields, from which we calculate the mass change over all ice-covered regions greater in area than 100km². The GIC rate for 2003-2010 is about 30 per cent smaller than the previous mass balance estimate that most closely matches our study period. The high mountains of Asia, in particular, show a mass loss of only 4±20 Gt yr⁻¹ for 2003-2010, compared with 47-55 Gt yr⁻¹ in previously published estimates. For completeness, we also estimate that the Greenland and Antarctic ice sheets, including their peripheral GICs, contributed 1.06±0.19 mm yr⁻¹ to sea level rise over the same time period. The total contribution to sea level rise from all ice-covered regions is thus 1.48±0.26 mm⁻¹, which agrees well with independent estimates of sea level rise originating from land ice loss and other terrestrial sources. |
author2 |
Jacob, Thomas (author) Wahr, John (author) Pfeffer, W. (author) Swenson, Sean (author) |
format |
Article in Journal/Newspaper |
title |
Recent contributions of glaciers and ice caps to sea level rise |
spellingShingle |
Recent contributions of glaciers and ice caps to sea level rise |
title_short |
Recent contributions of glaciers and ice caps to sea level rise |
title_full |
Recent contributions of glaciers and ice caps to sea level rise |
title_fullStr |
Recent contributions of glaciers and ice caps to sea level rise |
title_full_unstemmed |
Recent contributions of glaciers and ice caps to sea level rise |
title_sort |
recent contributions of glaciers and ice caps to sea level rise |
publisher |
Nature Publishing Group |
publishDate |
2012 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-720 https://doi.org/10.1038/nature10847 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland |
genre_facet |
Antarc* Antarctic Greenland |
op_relation |
Nature http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-720 doi:10.1038/nature10847 ark:/85065/d7668dwq |
op_rights |
Copyright 2012 Author(s). Published under license by the Nature Publishing Group. |
op_doi |
https://doi.org/10.1038/nature10847 |
container_title |
Nature |
container_volume |
482 |
container_issue |
7386 |
container_start_page |
514 |
op_container_end_page |
518 |
_version_ |
1776204892202860544 |