Laser altimetry reveals complex pattern of Greenland Ice Sheet dynamics

Beata M. Csatho, Anton F. Schenk, Cornelis J. van der Veen, Gregory Babonis, Kyle Duncan, Soroush Rezvanbehbahani, Michiel R. van den Broeke, Sebastian Bjerregaard Simonsen, Sudhagar Nagarajan, Jan H. van Angelen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Significance We present the first detailed reconstruction of surface elevation changes of the Greenland Ice Sheet from NASA’s laser altimetry data. Time series at nearly 100,000 locations allow the characterization of ice sheet changes at scales ranging from individual outlet glaciers to larger drainage basins and the entire ice sheet. Our record shows that continuing dynamic thinning provides a substantial contribution to Greenland mass loss. The large spatial and temporal variations of dynamic mass loss and widespread intermittent thinning indicate the complexity of ice sheet response to climate forcing, strongly enforcing the need for continued monitoring at high spatial resolution and for improving numerical ice sheet models.
Original languageEnglish
JournalProceedings of the National Academy of Sciences
Volume111
Issue number52
Pages (from-to)18478-18483
Number of pages6
ISSN0027-8424
DOIs
Publication statusPublished - 2014

Keywords

  • Physical Sciences
  • Earth, Atmospheric, and Planetary Sciences

Cite this

Csatho, B. M., Schenk, A. F., van der Veen, C. J., Babonis, G., Duncan, K., Rezvanbehbahani, S., van den Broeke, M. R., Simonsen, S. B., Nagarajan, S., & van Angelen, J. H. (2014). Laser altimetry reveals complex pattern of Greenland Ice Sheet dynamics. Proceedings of the National Academy of Sciences, 111(52), 18478-18483. https://doi.org/10.1073/pnas.1411680112