A COMPARISON OF SIMULATED MODEL RUNOFF TO OBSERVED SUPRAGLACIAL LAKE WATER VOLUMES IN THE REGION OF JAKOBSHAVN, GREENLAND

Greenland Ice Sheet surface meltwater runoff values were simulated over a 12,750 kilometer-squared region in the vicinity of the Jakobshavn Isbrae, West Greenland, based on meteorological data from the coastal Danish Meteorological Institute (DMI) and the Greenland Climate Net (GC-Net) for 2006 through 2008. SnowModel, a surface modeling system, was used to determine the daily runoff levels over 500 meter square grid patterns, which were traced to capture points as determined by two Digital Elevation Models (DEMs). Three years of time series MODIS images of the region were analyzed to determine the variable extent of the supraglacial lake sizes, and correlated to the modeled runoff levels. Comparisons with the regional air temperatures for the three respected melt seasons will also be discussed.