Along flow acceleration of the Greenland ice sheet

The acceleration of Greenland ice flow derived from ITS_LIVE annual velocity data spanning 1985-2018. There are two variations of using either weighted and unweighted least squares in the estimation. The data files follow the format: weighted--ax.tif | acceleration in the x direction: weighted--ay.tif | acceleration in the y-direction. weighted--a.tif | acceleration in the dominant flow direction weighted--asigma.tif | standard error estimate of the "weighted--a" data. weighted--N.tif | Number of years with data for each grid point. All data are using a polar stereographic projection (EPSG:3413). This dataset was created as part of the study: Grinsted et al. 2022, Accelerating ice flow at the onset of the Northeast Greenland ice stream. Processing choices is detailed there.Acknowledgments: This work was supported by the Villum Investigator Project IceFlow (16572), a Dancea grant from the Danish Environmental Protection Agency (EPA), and Villum Foundation Experiment grant (2361). EastGRIP is directed and organized by the Physics of Ice, Climate and Earth group, at the Niels Bohr Institute, University of Copenhagen. It is supported by funding agencies and institutions in Denmark (A. P. Møller Foundation, University of Copenhagen), USA (US National Science Foundation, Office of Polar Programs), Germany (Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research), Japan (National Institute of Polar Research and Arctic Challenge for Sustainability), Norway (University of Bergen and Trond Mohn Foundation), Switzerland (Swiss National Science Foundation), France (French Polar Institute Paul-Emile Victor, Institute for Geosciences and Environmental research), Canada (University of Manitoba) and China (Chinese Academy of Sciences and Beijing Normal University)