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Sea ice mass balance observations from the North Pole Environmental Observatory
Author(s) -
Perovich Don,
RichterMenge Jacqueline,
Polashenski Chris,
Elder Bruce,
Arbetter Todd,
Brennick Owen
Publication year - 2014
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2014gl059356
Subject(s) - sea ice , arctic ice pack , cryosphere , geology , antarctic sea ice , melt pond , thinning , oceanography , drift ice , fast ice , arctic , climatology , sea ice thickness , environmental science , geography , forestry
In recent years the periphery of the Arctic sea ice cover has undergone significant changes, with a reduction in summer ice extent, a thinning of the ice, and a shift from multiyear to first year ice. Here we examine sea ice conditions during nine summers between 2000 and 2013 in the interior of the ice pack, using autonomous measurements of sea ice mass balance deployed near the North Pole. Results exhibit no definitive trends. There is large interannual variability, with surface melt ranging from 0.02 m to 0.50 m and bottom melt from 0.10 m to 0.57 m. The largest amounts of bottom melt have occurred in the past few years. For all 9 years the ice at the end of the melt season was at least 1.2 m thick.