COSEE Ocean Systems: News
Permafrost thawing as a possible source of abrupt carbon release at the onset of the Bolling/Allerod
Description: One of the most abrupt and yet unexplained past rises in atmospheric CO2 (>10 p.p.m.v. in two centuries) occurred in quasi-synchrony with abrupt northern hemispheric warming into the Bolling/Allerod, ~14,600 years ago. Here researchers use a U/Th-dated record of atmospheric Δ14C from Tahiti corals to provide an independent and precise age control for this CO2 rise. They also use model simulations to show that the release of old (nearly 14C-free) carbon can explain these changes in CO2 and Δ14C. [Source: Nature]
Availability: Summary
Source: Nature
Publish Date: 11/20/2014
Reading Level: Expert
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