Summary: | The firn temperatures were collected at three different locations (FA-13, FA-15-1 and FA-15-2) in the percolation zone of the Southeast part of the Greenland Ice Sheet, about 50 kilometers West of Helheim Glacier front. At the two FA-15 sites, water levels from pressure transducers complement the firn temperatures records. Each string of temperature sensors was installed in a borehole drilled through the aquifer, hanging in the air when above the water table and in the water when below the water table. For the two FA-15 sites, a pressure transducer was installed in the same hole, located about 1 meter below the water table and vented at the surface. Each borehole was then backfilled with unconsolidated surface snow. For FA-13 (66.1812° North, 39.0435° West, 1563 meters), firn temperatures were collected between April 09, 2013 and September 13, 2015. For FA-15-1 (66.3622° North, 39.3119° West, 1664 meters), firn temperatures and water levels were collected between April 17, 2015 and February 22, 2017. For FA-15-2 (66.3548° North, 39.1788° West, 1543 meters), firn temperatures and water levels were collected between August 9, 2015 and February 2, 2017.
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