Evaluating GRACE mass change time series for the antarctic and Greenland ice sheet-methods and results

Groh，Andreas1; Horwath，Martin1; Horvath，Alexander2; Meister，Rakia3; Sørensen，Louise Sandberg3; Barletta，Valentina R.3; Forsberg，René3; Wouters，Bert4,10,11; Ditmar，Pavel5; Ran，Jiangjun5,12; Klees，Roland5; Su，Xiaoli6,13; Shang，Kun6; Guo，Junyi6; Shum，C. K.6,7; Schrama，Ernst8; Shepherd，Andrew9

2019-10-01

10.3390/geosciences9100415

Geosciences   影响因子和分区

2076-3263

2076-3263

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.

Antarctica GRACE Greenland Ice mass change Methods

ESCI

英语

其他

European Space Agency through the Climate Change Initiative project on the Antarctic Ice Sheet[4000112227/15/I-NB][4000112228/15/I-NB] ; European Space Agency through the Climate Change Initiative project on the Greenland Ice Sheet[4000112227/15/I-NB][4000112228/15/I-NB] ; Marie Curie International Outgoing Fellowship within the 7th European Community Framework Programme[FP7-PEOPLE-2011-IOF-301260] ; NWO VIDI grant[016.Vidi.171.063] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19070302] ; National Natural Science Foundation of China[41584016]

Geology

Geosciences, Multidisciplinary

WOS:000498271100011

MDPI

2-s2.0-85073453027

Scopus

1.Institut für Planetare GeodäsieTechnische Universität Dresden,Dresden,01062,Germany
2.Institut für Astronomische und Physikalische GeodäsieTechnische Universität München,München,80333,Germany
3.DTU SpaceTechnical University of Denmark,Kongens Lyngby,2800,Denmark
4.Bristol Glaciology CentreUniversity of Bristol,Bristol,BS8 1SS,United Kingdom
5.Department of Geoscience and Remote SensingDelft University of Technology,Delft,Stevinweg 1,2628 CN,Netherlands
6.School of Earth SciencesThe Ohio State University,Columbus,43210-1398,United States
7.Institute of Geodesy & GeophysicsChinese Academy of Sciences,Wuhan,430077,China
8.Department of Space EngineeringDelft University of Technology,Delft,Kluyverweg 1,2629 HS,Netherlands
9.Centre for Polar Observation and ModellingSchool of Earth and EnvironmentUniversity of Leeds,Leeds,LS2 9JT,United Kingdom
10.Institute for Marine and Atmospheric ResearchUtrecht University,Utrecht,P.O. Box 80.005,3508 TA,Netherlands
11.Department of Geoscience and Remote SensingDelft University of Technology,Delft,Stevinweg 1,2628 CN,Netherlands
12.Department of Earth and Space SciencesSouthern University of Science and Technology,Shenzhen,518055,China
13.Institute of Geophysics and PGMFSchool of PhysicsHuazhong University of Science and Technology,Wuhan,430074,China

Groh，Andreas,Horwath，Martin,Horvath，Alexander,et al. Evaluating GRACE mass change time series for the antarctic and Greenland ice sheet-methods and results[J]. Geosciences,2019,9(10).

Groh，Andreas.,Horwath，Martin.,Horvath，Alexander.,Meister，Rakia.,Sørensen，Louise Sandberg.,...&Shepherd，Andrew.(2019).Evaluating GRACE mass change time series for the antarctic and Greenland ice sheet-methods and results.Geosciences,9(10).

Groh，Andreas,et al."Evaluating GRACE mass change time series for the antarctic and Greenland ice sheet-methods and results".Geosciences 9.10(2019).