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Nature 451, 26-27 (3 January 2008) | doi:10.1038/451026a; Published online 2 January 2008
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Carbon cycle: Sources, sinks and seasons
John B. Miller1
Abstract
Changes in the phasing of seasonal cycles of carbon dioxide in the atmosphere mark the time when a region becomes a source or a sink of CO2. One study of such changes prompts thought-provoking conclusions.
We are currently getting a 50% discount on the climatic impact of our fossil-fuel emissions. Since 1957, and the beginning of the Mauna Loa record of atmospheric carbon dioxide, only about half of the CO2 emissions from fossil-fuel combustion have remained in the atmosphere, with the other half being taken up by the land and ocean.
- John B. Miller is at the University of Colorado and the NOAA Earth System Research Laboratory, 325 Broadway, Boulder, Colorado 80305, USA.
Email: john.b.miller@noaa.gov
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