A workshop was held in December 2018 (pre-AGU) focused on estimating freshwater fluxes from the Greenland Ice Sheet. It was sponsored by the National Science Foundation, and co-hosted by CLIVAR and CliC projects OMDP, NORP, and ISMIP6. The workshop had ~40 international participants from a variety of disciplines (oceanography, glaciology, hydrology, etc.) using various methods (ship- and ground-based observations, satellites, models of varying resolution, etc.). 

The report is available here archived in the Arctic Data Center: https://doi.org/10.18739/A24M9198B