|Upload date||27 Jun 2016|
|File size||77.0 MB|
Greenland SEC grids from ERS1, ERS2, and ENVISAT. 5-yr means for 1992-2014.
The data set provides surface elevation changes (SEC) for the Greenland Ice sheet derived from ERS-1, ERS-2, Envisat and Cryosat radar altimetry.
The ice mask is based on the GEUS/GST land/ice/ocean mask provided as part of national mapping projects, and based on 1980’s aerial photography.
The data from ERS and Envisat are based on 5-year running average, using combined algorithms of repeat-track (RT), along-track (AT) or cross-over (XO) algorithms, and include propagated error estimates.
Version 1.2 has changed filtering parameters in the XO and RT/AT combination algorithms, and applied an ice slope criterion (1.5deg) for masking of results, rather than distance to closest data point.
Update: A temporal extension of this time series is available from the Cryosat mission at: http://products.esa-icesheets-cci.org/products/details/greenland_surface_elevation_change_cryosat2_v2_2.zip.