Greenland Ice Sheet Mass Loss from GRACE Monthly Models
The Greenland ice sheet is currently experiencing a net mass loss. There are however large discrepancies between the published qualitative mass loss estimates, based on different data sets and methods. There are even large differences between the results based on the same data sources, as is the cas...
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ftdtupubl:oai:pure.atira.dk:publications/9a071ac5-4eb0-41db-bb9d-3eb41199c3e4 2024-01-14T10:07:12+01:00 Greenland Ice Sheet Mass Loss from GRACE Monthly Models Sørensen, Louise Sandberg Forsberg, René 2010 https://orbit.dtu.dk/en/publications/9a071ac5-4eb0-41db-bb9d-3eb41199c3e4 https://doi.org/10.1007/978-3-642-10634-7_70 eng eng Springer https://orbit.dtu.dk/en/publications/9a071ac5-4eb0-41db-bb9d-3eb41199c3e4 urn:ISBN:978-3-642-10633-0 info:eu-repo/semantics/closedAccess Sørensen , L S & Forsberg , R 2010 , Greenland Ice Sheet Mass Loss from GRACE Monthly Models . in Gravity, Geoid and Earth Observation . Springer , International Association of Geodesy Symposia , no. 135 , pp. 527-532 . https://doi.org/10.1007/978-3-642-10634-7_70 bookPart 2010 ftdtupubl https://doi.org/10.1007/978-3-642-10634-7_70 2023-12-20T23:57:28Z The Greenland ice sheet is currently experiencing a net mass loss. There are however large discrepancies between the published qualitative mass loss estimates, based on different data sets and methods. There are even large differences between the results based on the same data sources, as is the case with those estimated from GRACE data. In this chapter we have used a generalized inversion method to estimate the Greenland ice sheet mass change from the monthly global gravity solutions, provided by three different GRACE processing centers; CSR, JPL and GFZ. In order to derive mass change from these monthly global gravity models, we first calculate the gravity trend from these. When isolating the gravity trend signal, which is caused by the ice mass change, we first subtract the signal produced by the postglacial rebound (PGR) in Greenland. This is done by a simple method based on the ice history model ICE-5G and on ground measurements made in Scandinavia. We find that the PGR signal corresponds to a mass change signal of approximately -4 Gt per year. We conclude that there are large differences between these estimated mass change models. We find a total mass loss of 189, 146 and 67 Gt/year based on the CSR, GFZ and JPL solution respectively. Book Part Greenland Ice Sheet Technical University of Denmark: DTU Orbit Greenland 527 532 |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
description |
The Greenland ice sheet is currently experiencing a net mass loss. There are however large discrepancies between the published qualitative mass loss estimates, based on different data sets and methods. There are even large differences between the results based on the same data sources, as is the case with those estimated from GRACE data. In this chapter we have used a generalized inversion method to estimate the Greenland ice sheet mass change from the monthly global gravity solutions, provided by three different GRACE processing centers; CSR, JPL and GFZ. In order to derive mass change from these monthly global gravity models, we first calculate the gravity trend from these. When isolating the gravity trend signal, which is caused by the ice mass change, we first subtract the signal produced by the postglacial rebound (PGR) in Greenland. This is done by a simple method based on the ice history model ICE-5G and on ground measurements made in Scandinavia. We find that the PGR signal corresponds to a mass change signal of approximately -4 Gt per year. We conclude that there are large differences between these estimated mass change models. We find a total mass loss of 189, 146 and 67 Gt/year based on the CSR, GFZ and JPL solution respectively. |
format |
Book Part |
author |
Sørensen, Louise Sandberg Forsberg, René |
spellingShingle |
Sørensen, Louise Sandberg Forsberg, René Greenland Ice Sheet Mass Loss from GRACE Monthly Models |
author_facet |
Sørensen, Louise Sandberg Forsberg, René |
author_sort |
Sørensen, Louise Sandberg |
title |
Greenland Ice Sheet Mass Loss from GRACE Monthly Models |
title_short |
Greenland Ice Sheet Mass Loss from GRACE Monthly Models |
title_full |
Greenland Ice Sheet Mass Loss from GRACE Monthly Models |
title_fullStr |
Greenland Ice Sheet Mass Loss from GRACE Monthly Models |
title_full_unstemmed |
Greenland Ice Sheet Mass Loss from GRACE Monthly Models |
title_sort |
greenland ice sheet mass loss from grace monthly models |
publisher |
Springer |
publishDate |
2010 |
url |
https://orbit.dtu.dk/en/publications/9a071ac5-4eb0-41db-bb9d-3eb41199c3e4 https://doi.org/10.1007/978-3-642-10634-7_70 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Sørensen , L S & Forsberg , R 2010 , Greenland Ice Sheet Mass Loss from GRACE Monthly Models . in Gravity, Geoid and Earth Observation . Springer , International Association of Geodesy Symposia , no. 135 , pp. 527-532 . https://doi.org/10.1007/978-3-642-10634-7_70 |
op_relation |
https://orbit.dtu.dk/en/publications/9a071ac5-4eb0-41db-bb9d-3eb41199c3e4 urn:ISBN:978-3-642-10633-0 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/978-3-642-10634-7_70 |
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527 |
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532 |
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