Antarctic Ice Sheet monthly ice velocity - 2021
Variable: ice_velocity
Release Date, Version | 2022-04-20, 1
Descritpion: This dataset contains monthly gridded ice velocity maps of the Antarctic Ice Sheet derived from Sentinel-1 data acquired between 2021-01-01 and 2021-12-31. It was generated by ENVEO, as part of the ESA Antarctic Ice Sheet Climate Change Initiative project (Antarctic_Ice_Sheet_cci). The surface velocity is derived by applying feature tracking techniques using Sentinel-1 synthetic aperture radar (SAR) data acquired in the Interferometric Wide (IW) swath mode. Ice velocity is provided at 200m grid spacing in Polar Stereographic projection (EPSG: 3031). The horizontal velocity components are provided in true meters per day, towards easting and northing direction of the grid. The vertical displacement is derived from a digital elevation model. Provided is a NetCDF file with the velocity components: vx, vy, vz, along with maps showing the magnitude of the horizontal components, the valid pixel count and uncertainty. The product combines all ice velocity maps, based on 6- and 12-day repeats, acquired within a single month in a monthly averaged product.
Temporal coverage: 2021-01-01 00:00:00.000000 to 2021-12-31 00:00:00.000000
Extent: POLYGON ((-180 -60, 180 -60, 180 -90, -180 -90, -180 -60))
Product available at: https://cryoportal.enveo.at/data_files/2021-ESACCI-L3C-AIS-IV-S1-1M_200m-fv1.1_20220420.zip
Antarctic Ice Sheet monthly ice velocity - 2021 Variable: ice_velocity Release Date, Version | 2022-04-20, 1 Descritpion: This dataset contains monthly gridded ice velocity maps of the Antarctic Ice Sheet derived from Sentinel-1 data acquired between 2021-01-01 and 2021-12-31. It was generated by ENVEO, as part of the ESA Antarctic Ice Sheet Climate Change Initiative project (Antarctic_Ice_Sheet_cci). The surface velocity is derived by applying feature tracking techniques using Sentinel-1 synthetic aperture radar (SAR) data acquired in the Interferometric Wide (IW) swath mode. Ice velocity is provided at 200m grid spacing in Polar Stereographic projection (EPSG: 3031). The horizontal velocity components are provided in true meters per day, towards easting and northing direction of the grid. The vertical displacement is derived from a digital elevation model. Provided is a NetCDF file with the velocity components: vx, vy, vz, along with maps showing the magnitude of the horizontal components, the valid pixel count and uncertainty. The product combines all ice velocity maps, based on 6- and 12-day repeats, acquired within a single month in a monthly averaged product. Temporal coverage: 2021-01-01 00:00:00.000000 to 2021-12-31 00:00:00.000000 Extent: POLYGON ((-180 -60, 180 -60, 180 -90, -180 -90, -180 -60))