Reconstruction of Sea Ice Concentration in Northern Baffin Bay Using Deuterium Excess in a Coastal Ice Core From the Northwestern Greenland Ice Sheet

Variations in the conditions of sea ice in the northern part of Baffin Bay and North Open Water polynya influence human activity in northwestern Greenland through oceanic circulation and heat balance between air and sea. To evaluate the impact of variations in sea ice conditions on the surrounding e...

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Bibliographic Details
Published in:Journal of geophysical research. Atmospheres 2020-08, Vol.125 (16), p.n/a
Main Authors: Kurosaki, Yutaka, Matoba, Sumito, Iizuka, Yoshinori, Niwano, Masashi, Tanikawa, Tomonori, Ando, Takuto, Hori, Akira, Miyamoto, Atsushi, Fujita, Shuji, Aoki, Teruo
Format: Article
Language:English
Subjects:
Air temperature
Atmospheric conditions
Atmospheric forcing
Coring
Deuterium
d‐excess
Geophysics
Glaciation
Greenland
Greenland ice sheet
Heat balance
Heat transport
Human influences
Ice conditions
ice core
Ice cores
Ice sheets
isotope
Marine sediments
Meridional heat transport
North Atlantic Oscillation
Ocean circulation
Ocean-atmosphere system
Oceanographic conditions
Polynyas
Sea ice
Sea ice concentrations
Sea ice conditions
Sea ice variations
Sediments
SIGMA
Temperature
Temporal variations
Water circulation
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Summary:Variations in the conditions of sea ice in the northern part of Baffin Bay and North Open Water polynya influence human activity in northwestern Greenland through oceanic circulation and heat balance between air and sea. To evaluate the impact of variations in sea ice conditions on the surrounding environment, it is important to understand the mechanism of sea ice variations over long periods. In this study, we estimated the age of the SIGMA‐A ice core collected northwestern Greenland Ice Sheet and researched the relationship between annual or seasonal deuterium excess (d‐excess) and seasonal sea ice concentration. We found that a temporal variation in the spring d‐excess in the ice core negatively correlated significantly with that of sea ice concentration in February–April in northern Baffin Bay from 1979–2005 (r = −0.61, p 
ISSN:2169-897X
2169-8996
DOI:10.1029/2019JD031668