Mosta Abd-Elbaky

Bülent Ecevit University

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Shuanggen Jin

Shanghai Astronomical Observatory

Guping Feng

Shanghai Astronomical Observatory

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Shanghai Astronomical Observatory

University of Chinese Academy of Sciences

Henan Polytechnic University

Nanjing University of Information Science and Technology

Sohag University

China University of Mining and Technology

Chinese Academy of Sciences

Zhuhai Fudan Innovation Research Institute

Institute of Navigation

Kinokuniya

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Accelerated ice-sheet mass loss in Antarctica from 18-year satellite laser ranging measurements

Annals of Geophysics (2016)

Shuanggen Jin Mosta Abd-Elbaky Guping Feng

<p>Accurate estimate of the ice-sheet mass balance in Antarctic is very difficult due to complex ice sheet condition and sparse in situ measurements. In this paper, the low-degree gravity field coefficients of up to degree and order 5 derived from Satellite Laser Ranging (SLR) measurements are used to determine the ice mass variations in Antarctica for the period 1993–2011. Results show that the ice mass is losing with -36±13 Gt/y in Antarctica, -42±11 Gt/y in the West Antarctica and 6±10 Gt/y in the East Antarctica from 1993 to 2011. The ice mass variations from the SLR 5×5 have a good agreement with the GRACE 5×5, GRACE 5×5 (1&2) and GRACE (60×60) for the entire continent since 2003, but degree 5 from SLR is not sufficient to quantify ice losses in West and East Antarctica, respectively. The rate of ice loss in Antarctica is -28±17 Gt/y for 1993-2002 and -55±17 Gt/y for 2003-2011, indicating significant accelerated ice mass losses since 2003. Furthermore, the results from SLR are comparable with GRACE measurements.</p>

Satellite laser ranging

Antarctic ice sheet

10.4401/ag-6782

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