Red indicates (a) airborne
radar altimetry observed seasonally from 2004 to 2007, (b) the line of seasonal Ice, Cloud, and Land Elevation Satellite (ICESat)
laser elevation data used
in this study, observed from 2004 to 2007 and (c) global positioning system (GPS) profiles and sparse GPS observations at ice-free areas. Blue in (ad)
indicates the ice cap margins.
S. Gudmundsson et al. Mass balance
/media/ces/Gudmundsson-etal-2011-PR-7282-26519-1-PB.pdf