Sample use to date exposure to sunlight at Camp Century to 416,000 years (VIDEO)
Caption
Video of rotating 3D models of the Camp Century ice and sediment core built from photographs. This core helped reveal that a large portion of Greenland melted about 416,000 years ago and became ice-free tundra, a new study in the journal Science shows. The results help overturn a previous view that much of the Greenland ice sheet persisted for most of the last two and a half million years. Instead, moderate warming led to dramatic melting. This finding indicates that the ice sheet on Greenland may be more sensitive to human-caused climate change than previously understood—and will be vulnerable to irreversible, rapid melting in coming centuries.
Credit
Andrew Christ/UVM
Usage Restrictions
for use with news coverage of associated research study
License
Original content