8142 Frozen Soil Carbon and Its Impact on Climate Change

Sunday, February 19, 2012: 1:00 PM
Room 109 (VCC West Building)
Charles Koven , Lawrence Berkeley National Laboratory, Berkeley, CA
The vulnerability of soil carbon to warming is one of the largest sources of uncertainty in the projection of future climate change. If, in a warmer world, bacteria decompose organic soil matter faster, releasing carbon dioxide, this will set up a positive feedback loop, speeding up global warming. According to recent estimates the global mass of soil carbon needs to be revised upwards by a frightening amount: from 2,500 billion tonnes to more than 4,000 billion tonnes.
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