Laser altimetry reveals complex pattern of Greenland Ice Sheet dynamics.

  title={Laser altimetry reveals complex pattern of Greenland Ice Sheet dynamics.},
  author={Be{\'a}ta M. Csath{\'o} and Anton Schenk and Cornelis J van der Veen and Gregory S. Babonis and Kyle Duncan and Soroush Rezvanbehbahani and M R van den Broeke and Sebastian B. Simonsen and Sudhagar Nagarajan and Jan H van Angelen},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={111 52},
We present a new record of ice thickness change, reconstructed at nearly 100,000 sites on the Greenland Ice Sheet (GrIS) from laser altimetry measurements spanning the period 1993-2012, partitioned into changes due to surface mass balance (SMB) and ice dynamics. We estimate a mean annual GrIS mass loss of 243 ± 18 Gt ⋅ y(-1), equivalent to 0.68 mm ⋅ y(-1) sea level rise (SLR) for 2003-2009. Dynamic thinning contributed 48%, with the largest rates occurring in 2004-2006, followed by a gradual… CONTINUE READING
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