Articles | Volume 12, issue 7
Research article
11 Jul 2018
Research article |  | 11 Jul 2018

Greenland Ice Mapping Project: ice flow velocity variation at sub-monthly to decadal timescales

Ian Joughin, Ben E. Smith, and Ian Howat

Data sets

Individual Glacier Velocities I. Joughin

Winter Velocity Maps I. Joughin

Quarterly Velocity I. Joughin

Monthly Velocity I. Joughin

Short summary
We describe several new ice velocity maps produced using Landsat 8 and Copernicus Sentinel 1A/B data. We focus on several sites where we analyse these data in conjunction with earlier data from this project, which extend back to the year 2000. In particular, we find that Jakobshavn Isbræ began slowing substantially in 2017. The growing duration of these records will allow more robust analyses of the processes controlling fast flow and how they are affected by climate and other forcings.