Talpe, Matthieu J., Nerem, R. Steven, Forootan, Ehsan  ORCID: https://orcid.org/0000-0003-3055-041X, Schmidt, Michael, Lemoine, Frank G., Enderlin, Ellyn M. and Landerer, Felix W.
2017.
Ice mass change in Greenland and Antarctica between 1993 and 2013 from satellite gravity measurements.
Journal of Geodesy
91
(11)
, pp. 1283-1298.
10.1007/s00190-017-1025-y
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Abstract
We construct long-term time series of Greenland and Antarctic ice sheet mass change from satellite gravity measurements. A statistical reconstruction approach is developed based on a Principal Component Analysis to combine high-resolution spatial modes from the Gravity Recovery and Climate Experiment (GRACE) mission with the gravity information from conventional satellite track-ing data. Uncertainties of this reconstruction are rigorously assessed; they include temporal limitations for short GRACE measurements, spatial limitations for the low-resolution conventional tracking data measurements, and limitations of the estimated statistical relationships between low and high degree potential coe�cients re ected in the PCA modes. Trends of mass variations in Greenland and Antarctica are assessed against a number of previous studies. The resulting time series for Greenland show a higher rate of mass loss than other methods before 2000, while the Antarctic ice sheet appears heavily in uenced by interannual variations.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Earth and Environmental Sciences |
| Uncontrolled Keywords: | time-variable Gravity � Mass Change � Greenland � Antarctica |
| Publisher: | Springer Verlag |
| ISSN: | 0949-7714 |
| Date of First Compliant Deposit: | 15 May 2017 |
| Date of Acceptance: | 18 April 2017 |
| Last Modified: | 24 Nov 2024 06:45 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/100560 |
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