Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results
Satellite gravimetry data acquired by the Gravity Recovery and Climate Experiment (GRACE) allows to derive the temporal evolution in ice mass for both the Antarctic Ice Sheet (AIS) and the Greenland Ice Sheet (GIS). Various algorithms have been used in a wide range of studies to generate Gravimetric...
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Online Access: | https://doi.org/10.3390/geosciences9100415 https://doaj.org/article/f9fb39d2d47d4e1ea19e3e29a0e0a350 |
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ftdoajarticles:oai:doaj.org/article:f9fb39d2d47d4e1ea19e3e29a0e0a350 2023-05-15T13:43:27+02:00 Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results Andreas Groh Martin Horwath Alexander Horvath Rakia Meister Louise Sandberg Sørensen Valentina R. Barletta René Forsberg Bert Wouters Pavel Ditmar Jiangjun Ran Roland Klees Xiaoli Su Kun Shang Junyi Guo C. K. Shum Ernst Schrama Andrew Shepherd 2019-09-01T00:00:00Z https://doi.org/10.3390/geosciences9100415 https://doaj.org/article/f9fb39d2d47d4e1ea19e3e29a0e0a350 EN eng MDPI AG https://www.mdpi.com/2076-3263/9/10/415 https://doaj.org/toc/2076-3263 2076-3263 doi:10.3390/geosciences9100415 https://doaj.org/article/f9fb39d2d47d4e1ea19e3e29a0e0a350 Geosciences, Vol 9, Iss 10, p 415 (2019) grace ice mass change greenland antarctica methods Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.3390/geosciences9100415 2023-01-08T01:32:55Z Satellite gravimetry data acquired by the Gravity Recovery and Climate Experiment (GRACE) allows to derive the temporal evolution in ice mass for both the Antarctic Ice Sheet (AIS) and the Greenland Ice Sheet (GIS). Various algorithms have been used in a wide range of studies to generate Gravimetric Mass Balance (GMB) products. Results from different studies may be affected by substantial differences in the processing, including the applied algorithm, the utilised background models and the time period under consideration. This study gives a detailed description of an assessment of the performance of GMB algorithms using actual GRACE monthly solutions for a prescribed period as well as synthetic data sets. The inter-comparison exercise was conducted in the scope of the European Space Agency’s Climate Change Initiative (CCI) project for the AIS and GIS, and was, for the first time, open to everyone. GMB products generated by different groups could be evaluated and directly compared against each other. For the period from 2003-02 to 2013-12, estimated linear trends in ice mass vary between −99 Gt/yr and −108 Gt/yr for the AIS and between −252 Gt/yr and −274 Gt/yr for the GIS, respectively. The spread between the solutions is larger if smaller drainage basins or gridded GMB products are considered. Finally, findings from the exercise formed the basis to select the algorithms used for the GMB product generation within the AIS and GIS CCI project. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland Ice Sheet Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Greenland Geosciences 9 10 415 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
grace ice mass change greenland antarctica methods Geology QE1-996.5 |
spellingShingle |
grace ice mass change greenland antarctica methods Geology QE1-996.5 Andreas Groh Martin Horwath Alexander Horvath Rakia Meister Louise Sandberg Sørensen Valentina R. Barletta René Forsberg Bert Wouters Pavel Ditmar Jiangjun Ran Roland Klees Xiaoli Su Kun Shang Junyi Guo C. K. Shum Ernst Schrama Andrew Shepherd Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results |
topic_facet |
grace ice mass change greenland antarctica methods Geology QE1-996.5 |
description |
Satellite gravimetry data acquired by the Gravity Recovery and Climate Experiment (GRACE) allows to derive the temporal evolution in ice mass for both the Antarctic Ice Sheet (AIS) and the Greenland Ice Sheet (GIS). Various algorithms have been used in a wide range of studies to generate Gravimetric Mass Balance (GMB) products. Results from different studies may be affected by substantial differences in the processing, including the applied algorithm, the utilised background models and the time period under consideration. This study gives a detailed description of an assessment of the performance of GMB algorithms using actual GRACE monthly solutions for a prescribed period as well as synthetic data sets. The inter-comparison exercise was conducted in the scope of the European Space Agency’s Climate Change Initiative (CCI) project for the AIS and GIS, and was, for the first time, open to everyone. GMB products generated by different groups could be evaluated and directly compared against each other. For the period from 2003-02 to 2013-12, estimated linear trends in ice mass vary between −99 Gt/yr and −108 Gt/yr for the AIS and between −252 Gt/yr and −274 Gt/yr for the GIS, respectively. The spread between the solutions is larger if smaller drainage basins or gridded GMB products are considered. Finally, findings from the exercise formed the basis to select the algorithms used for the GMB product generation within the AIS and GIS CCI project. |
format |
Article in Journal/Newspaper |
author |
Andreas Groh Martin Horwath Alexander Horvath Rakia Meister Louise Sandberg Sørensen Valentina R. Barletta René Forsberg Bert Wouters Pavel Ditmar Jiangjun Ran Roland Klees Xiaoli Su Kun Shang Junyi Guo C. K. Shum Ernst Schrama Andrew Shepherd |
author_facet |
Andreas Groh Martin Horwath Alexander Horvath Rakia Meister Louise Sandberg Sørensen Valentina R. Barletta René Forsberg Bert Wouters Pavel Ditmar Jiangjun Ran Roland Klees Xiaoli Su Kun Shang Junyi Guo C. K. Shum Ernst Schrama Andrew Shepherd |
author_sort |
Andreas Groh |
title |
Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results |
title_short |
Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results |
title_full |
Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results |
title_fullStr |
Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results |
title_full_unstemmed |
Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results |
title_sort |
evaluating grace mass change time series for the antarctic and greenland ice sheet—methods and results |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/geosciences9100415 https://doaj.org/article/f9fb39d2d47d4e1ea19e3e29a0e0a350 |
geographic |
Antarctic The Antarctic Greenland |
geographic_facet |
Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Greenland Ice Sheet |
op_source |
Geosciences, Vol 9, Iss 10, p 415 (2019) |
op_relation |
https://www.mdpi.com/2076-3263/9/10/415 https://doaj.org/toc/2076-3263 2076-3263 doi:10.3390/geosciences9100415 https://doaj.org/article/f9fb39d2d47d4e1ea19e3e29a0e0a350 |
op_doi |
https://doi.org/10.3390/geosciences9100415 |
container_title |
Geosciences |
container_volume |
9 |
container_issue |
10 |
container_start_page |
415 |
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1766189197655277568 |