page 17, left column, first paragraph:

The ESA CCI project has changed their website and the 'Comprehensive Error Characterisation Report for the Greenland Ice Sheet cci project of ESA’s Climate Change Initiative' is no longer available. Instead we can use Boncori et al 2018: "The expected error of the satellite product is estimated to be 10-40 m yr-1 for individual pairs (Boncori et al, 2018)"

page 19, left column, first paragraph:

"... uncertainty range of 10–30 m yr-1 (GIScci-Consortium, 2013)" >> "... uncertainty range of 10-40 m yr-1 (Boncori et al, 2018)".