Sea ice drift from GPS tracker: Photo: S. Muckenhuber, NERSC.Sentinel-1A SAR image of 12. July, including the three GPS trajectories in sea ice in the Fram Strait.: Image processing: M. Babiker, NERSC.As part of the RCN project 'IceMotion', NERSC is developing a new high-resolution sea ice drift algorithm for satellite data from ESA's Sentinel-1 mission. To validate the new algorithm and investigate sea ice drift on high temporal resolution, GPS trackers have been deployed on loose ice floes and pack-ice in Fram Strait. These efforts will help to gain a better understanding of short-term drift variability and how displacements from subsequent satellite images relate to real sea ice velocity.