What have we learnt from ICESat on greenland ice sheet change and what to expect from current ICESat-2

Ice-sheet mass balance and ice behaviour have been effectively monitored remotely by space-borne laser ranging technology, i.e. satellite altimetry, and/or gravimetry. ICESat mission launched in 2003 has pioneered altimetry providing a large amount of elevation data related to sheet change with high spatial temporal resolution. ICESat-2, the successor mission, was 2018, continuing legacy its predecessor. This paper presents an overview review Greenland estimated from compared against estimates derived gravimetry, changes Earth’s gravity field obtained GRACE data. In addition that, it provides insight into characteristics possibilities monitoring renewed which for examination height on Jakobshavn glacier. comparison (2004–2008) shows that average different areas varies up ±0.60 m yr−1. Island’s coastal southern regions are most affected loss, while inland record near-balance state. same period, anomaly measurements showed negative annual trends few cm -0.36 yr-1 w.e. (water equivalent), records show slightly positive trends. According observations, following years (2009–2017), coast continued.