Likely basal frozen/thawed state of the Greenland Ice Sheet.

=== Original Data Source ===
Likely Basal Thermal State of the Greenland Ice Sheet

The Likely Basal Thermal State of the Greenland Ice Sheet product
at the National Snow and Ice Data Center contains key datasets that
show how the likely basal thermal state was inferred from existing
airborne and satellite datasets and recent methods, and provides a
synthesis mask of the likely basal thermal state over the Greenland
Ice Sheet (MacGregor et al. 2016), which is displayed in QGreenland.

MacGregor, J.A., M.A. Fahnestock, G.A. Catania, A. Aschwanden, G.D.
Clow, W.T. Colgan, S.P. Gogineni, M. Morlighem, S.M.J. Nowicki,
J.D. Paden, S.F. Price and H. Seroussi. 2016. A synthesis of the
basal thermal state of the Greenland Ice Sheet, Journal of
Geophysical Research Earth Surface, 121:1328–1350,
doi:10.1002/2015JF003808.

Citation:
MacGregor, J. A., M. Fahnestock, G. Catania, J. Paden, P.
Gogineni, M. Morlighem, W. Colgan, S. M. Nowicki, G. Clow, A.
Aschwanden, S. F. Price, and H. Seroussi. 2017. Likely Basal
Thermal State of the Greenland Ice Sheet, Version 1. Boulder,
Colorado USA. NASA National Snow and Ice Data Center Distributed
Active Archive Center. doi:
https://doi.org/10.5067/R4MWDWWUWQF9.

Citation URL:
https://nsidc.org/data/rdbts4/versions/1