Volume 4. The Atmosphere

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"...a broad overview of specific themes and enquiry methods for biogeochemists and atmospheric geochemists. (...) a huge amount of material has been brought together in the book and synthesized by the well-known and active practitioners in the field. It is highly recommended." (Shaocai Yu, Ph.D, National Exposure Research Laboratory, U.S. Environmental Protection Agency, NC, USA)


Ralph F. Keeling Ralph F. Keeling
Professor
Scripps Institution of Oceanography
University of California, San Diego
9500 Gilman Drive
La Jolla, CA 92093-0244
USA
E-mail: rkeeling@ucsd.edu
cover Volume 4

About the editor

Final contents of this volume
For more than a decade, my research group has been engaged in measuring changes in atmospheric oxygen (O2) concentration. Oxygen is closely linked to carbon dioxide by photosynthesis, respiration, and combustion reactions. We have shown that oxygen concentrations in the clean atmosphere vary with season and are slowly decreasing from year to year. By measuring these changes along with changes in carbon dioxide, we can learn about the fate of the carbon dioxide emitted each year by humans: How much remains in the air? How much enters the oceans? How much is taken up by land plants? Recently, I have also been engaged in developing theories for why atmospheric carbon dioxide was lower during Pleistocene glacial periods, and why the global climate was also highly unstable during these times.

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