Greenland ice mass balance from GPS, GRACE and ICESat
Global warming is predicted to have a profound impact on the Greenland Ice Sheet (GrIS) and its contribution to future sea-level rise. The GrIS has seen dramatic changes over the last two decades and mass loss has been accelerating, owing to a combination of increased runoff and discharge of ice acr...
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ftcopenhagenunip:oai:pure.atira.dk:publications/df7df8b8-0ed1-4c6d-878a-dd1190b2f71b 2023-05-15T13:07:34+02:00 Greenland ice mass balance from GPS, GRACE and ICESat Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John Bamber, Jonathan L Hurkmans, Ruud Broeke, Michiel van den Timm, Lars Hjortborg Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Larsen, Nicolaj Krog Jørgensen, Lars Tyge Færch-Jensen, Anders Willerslev, Eske Bevis, Michael 2012-02-28 https://curis.ku.dk/portal/da/publications/greenland-ice-mass-balance-from-gps-grace-and-icesat(df7df8b8-0ed1-4c6d-878a-dd1190b2f71b).html https://register.unavco.org/public/profile/viewab.aspx?xt=523 eng eng info:eu-repo/semantics/restrictedAccess Khan , S A , Kjær , K H , Korsgaard , N J , Wahr , J , Bamber , J L , Hurkmans , R , Broeke , M V D , Timm , L H , Kjeldsen , K K , Bjørk , A A , Larsen , N K , Jørgensen , L T , Færch-Jensen , A , Willerslev , E & Bevis , M 2012 , ' Greenland ice mass balance from GPS, GRACE and ICESat ' , 2012 UNAVCO Science Workshop , Boulder, CO , United States , 28/02/2012 - 01/03/2012 . < https://register.unavco.org/public/profile/viewab.aspx?xt=523 > conferenceObject 2012 ftcopenhagenunip 2022-11-23T23:53:24Z Global warming is predicted to have a profound impact on the Greenland Ice Sheet (GrIS) and its contribution to future sea-level rise. The GrIS has seen dramatic changes over the last two decades and mass loss has been accelerating, owing to a combination of increased runoff and discharge of ice across the grounding line. The acceleration of glaciers has been reported as pervasive and spreading with time. Prominent is the significant mass change of the southeast and northwest margins associated with glacier speed-up and dynamic thinning. It is unknown, however, whether the extensively documented glacier speed-ups are a response to recent external forcing and the start of a long-term trend in increasing mass loss, or related to internal variability in the ice sheet-climate system that occurs over a range of timescales. Here, we report multi-decadal observations of ice mass change from northwestern Greenland, using stereoscopic coverage by aerial photographs recorded in 1985, and subsequent comparative surface elevation data from ICESat (Ice, Cloud and land Elevation Satellite) and ATM (Airborne Topographic Mapper) supplemented with measurements from GPS and the Gravity Recovery and Climate Experiment (GRACE) satellite gravity mission, launched in March, 2002. The GRACE results provide a direct measure of mass loss, while the GPS data are used to monitor crustal uplift caused by ice mass loss close to the GPS sites. Conference Object Airborne Topographic Mapper glacier Greenland Ice Sheet University of Copenhagen: Research Greenland |
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Open Polar |
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University of Copenhagen: Research |
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ftcopenhagenunip |
language |
English |
description |
Global warming is predicted to have a profound impact on the Greenland Ice Sheet (GrIS) and its contribution to future sea-level rise. The GrIS has seen dramatic changes over the last two decades and mass loss has been accelerating, owing to a combination of increased runoff and discharge of ice across the grounding line. The acceleration of glaciers has been reported as pervasive and spreading with time. Prominent is the significant mass change of the southeast and northwest margins associated with glacier speed-up and dynamic thinning. It is unknown, however, whether the extensively documented glacier speed-ups are a response to recent external forcing and the start of a long-term trend in increasing mass loss, or related to internal variability in the ice sheet-climate system that occurs over a range of timescales. Here, we report multi-decadal observations of ice mass change from northwestern Greenland, using stereoscopic coverage by aerial photographs recorded in 1985, and subsequent comparative surface elevation data from ICESat (Ice, Cloud and land Elevation Satellite) and ATM (Airborne Topographic Mapper) supplemented with measurements from GPS and the Gravity Recovery and Climate Experiment (GRACE) satellite gravity mission, launched in March, 2002. The GRACE results provide a direct measure of mass loss, while the GPS data are used to monitor crustal uplift caused by ice mass loss close to the GPS sites. |
format |
Conference Object |
author |
Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John Bamber, Jonathan L Hurkmans, Ruud Broeke, Michiel van den Timm, Lars Hjortborg Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Larsen, Nicolaj Krog Jørgensen, Lars Tyge Færch-Jensen, Anders Willerslev, Eske Bevis, Michael |
spellingShingle |
Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John Bamber, Jonathan L Hurkmans, Ruud Broeke, Michiel van den Timm, Lars Hjortborg Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Larsen, Nicolaj Krog Jørgensen, Lars Tyge Færch-Jensen, Anders Willerslev, Eske Bevis, Michael Greenland ice mass balance from GPS, GRACE and ICESat |
author_facet |
Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John Bamber, Jonathan L Hurkmans, Ruud Broeke, Michiel van den Timm, Lars Hjortborg Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Larsen, Nicolaj Krog Jørgensen, Lars Tyge Færch-Jensen, Anders Willerslev, Eske Bevis, Michael |
author_sort |
Khan, Shfaqat Abbas |
title |
Greenland ice mass balance from GPS, GRACE and ICESat |
title_short |
Greenland ice mass balance from GPS, GRACE and ICESat |
title_full |
Greenland ice mass balance from GPS, GRACE and ICESat |
title_fullStr |
Greenland ice mass balance from GPS, GRACE and ICESat |
title_full_unstemmed |
Greenland ice mass balance from GPS, GRACE and ICESat |
title_sort |
greenland ice mass balance from gps, grace and icesat |
publishDate |
2012 |
url |
https://curis.ku.dk/portal/da/publications/greenland-ice-mass-balance-from-gps-grace-and-icesat(df7df8b8-0ed1-4c6d-878a-dd1190b2f71b).html https://register.unavco.org/public/profile/viewab.aspx?xt=523 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Airborne Topographic Mapper glacier Greenland Ice Sheet |
genre_facet |
Airborne Topographic Mapper glacier Greenland Ice Sheet |
op_source |
Khan , S A , Kjær , K H , Korsgaard , N J , Wahr , J , Bamber , J L , Hurkmans , R , Broeke , M V D , Timm , L H , Kjeldsen , K K , Bjørk , A A , Larsen , N K , Jørgensen , L T , Færch-Jensen , A , Willerslev , E & Bevis , M 2012 , ' Greenland ice mass balance from GPS, GRACE and ICESat ' , 2012 UNAVCO Science Workshop , Boulder, CO , United States , 28/02/2012 - 01/03/2012 . < https://register.unavco.org/public/profile/viewab.aspx?xt=523 > |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766059445366816768 |