The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017
We use the complete gravity recovery and climate experiment (GRACE) Level-2 monthly time series to derive the ice mass changes of the Patagonian Icefields (Southern Andes). The glacial isostatic adjustment is accounted for by a regional model that is constrained by global navigation satellite system...
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ftmdpi:oai:mdpi.com:/2072-4292/11/8/909/ 2023-08-20T04:01:31+02:00 The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017 Andreas Richter Andreas Groh Martin Horwath Erik Ivins Eric Marderwald José Luis Hormaechea Raúl Perdomo Reinhard Dietrich agris 2019-04-14 application/pdf https://doi.org/10.3390/rs11080909 EN eng Multidisciplinary Digital Publishing Institute Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs11080909 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 11; Issue 8; Pages: 909 ice mass satellite gravimetry Patagonia GRACE Text 2019 ftmdpi https://doi.org/10.3390/rs11080909 2023-07-31T22:11:43Z We use the complete gravity recovery and climate experiment (GRACE) Level-2 monthly time series to derive the ice mass changes of the Patagonian Icefields (Southern Andes). The glacial isostatic adjustment is accounted for by a regional model that is constrained by global navigation satellite systems (GNSS) uplift observations. Further corrections are applied concerning the effect of mass variations in the ocean, in the continental water storage, and of the Antarctic ice sheet. The 161 monthly GRACE gravity field solutions are inverted in the spatial domain through the adjustment of scaling factors applied to a-priori ice mass change patterns based on published remote sensing results for the Southern and Northern Patagonian Icefields, respectively. We infer an ice mass change rate of −24.4 ± 4.7 Gt/a for the Patagonian Icefields between April 2002 and June 2017, which corresponds to a contribution to the eustatic sea level rise of 0.067 ± 0.013 mm/a. Our time series of monthly ice mass changes reveals no indication for an acceleration in ice mass loss. We find indications that the Northern Patagonian Icefield contributes more to the integral ice loss than previously assumed. Text Antarc* Antarctic Ice Sheet MDPI Open Access Publishing Antarctic Patagonia The Antarctic Remote Sensing 11 8 909 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
ice mass satellite gravimetry Patagonia GRACE |
spellingShingle |
ice mass satellite gravimetry Patagonia GRACE Andreas Richter Andreas Groh Martin Horwath Erik Ivins Eric Marderwald José Luis Hormaechea Raúl Perdomo Reinhard Dietrich The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017 |
topic_facet |
ice mass satellite gravimetry Patagonia GRACE |
description |
We use the complete gravity recovery and climate experiment (GRACE) Level-2 monthly time series to derive the ice mass changes of the Patagonian Icefields (Southern Andes). The glacial isostatic adjustment is accounted for by a regional model that is constrained by global navigation satellite systems (GNSS) uplift observations. Further corrections are applied concerning the effect of mass variations in the ocean, in the continental water storage, and of the Antarctic ice sheet. The 161 monthly GRACE gravity field solutions are inverted in the spatial domain through the adjustment of scaling factors applied to a-priori ice mass change patterns based on published remote sensing results for the Southern and Northern Patagonian Icefields, respectively. We infer an ice mass change rate of −24.4 ± 4.7 Gt/a for the Patagonian Icefields between April 2002 and June 2017, which corresponds to a contribution to the eustatic sea level rise of 0.067 ± 0.013 mm/a. Our time series of monthly ice mass changes reveals no indication for an acceleration in ice mass loss. We find indications that the Northern Patagonian Icefield contributes more to the integral ice loss than previously assumed. |
format |
Text |
author |
Andreas Richter Andreas Groh Martin Horwath Erik Ivins Eric Marderwald José Luis Hormaechea Raúl Perdomo Reinhard Dietrich |
author_facet |
Andreas Richter Andreas Groh Martin Horwath Erik Ivins Eric Marderwald José Luis Hormaechea Raúl Perdomo Reinhard Dietrich |
author_sort |
Andreas Richter |
title |
The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017 |
title_short |
The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017 |
title_full |
The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017 |
title_fullStr |
The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017 |
title_full_unstemmed |
The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017 |
title_sort |
rapid and steady mass loss of the patagonian icefields throughout the grace era: 2002–2017 |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/rs11080909 |
op_coverage |
agris |
geographic |
Antarctic Patagonia The Antarctic |
geographic_facet |
Antarctic Patagonia The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Remote Sensing; Volume 11; Issue 8; Pages: 909 |
op_relation |
Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs11080909 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs11080909 |
container_title |
Remote Sensing |
container_volume |
11 |
container_issue |
8 |
container_start_page |
909 |
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1774724774215286784 |