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Global Climate Change DigestArchives of the
Global Climate Change Digest

A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999

FROM VOLUME 9, NUMBER 5, MAY 1996

PROFESSIONAL PUBLICATIONS...
GREENHOUSE GAS CYCLES: NITROUS OXIDE


Item #d96may47

"A Global Model of Changing N2O Emissions from Natural and Perturbed Soils," C.D. Nevison (Aeron. Lab., NOAA, 325 Broadway, Boulder CO 80303), G. Esser, E.A. Holland, Clim. Change, 32(3), 327-378, Mar. 1996.

Describes a high resolution terrestrial biosphere model developed to estimate changes in nitrous oxide emissions from 1860 to 1990. The model is driven by four anthropogenic perturbations: land use change, and nitrogen inputs from fertilizer, livestock manure, and atmospheric deposition of fossil fuel NOx. Estimates 1990 global N2O emissions attributed to these to be 1.4, 0.7, 0.4 and 0.08 Tg N/yr, respectively.


Item #d96may48

"Sources and Sinks of the Greenhouse Gas Nitrous Oxide: Atmospheric Candidates and Their Implications for Global Change," S.S. Prasad (Creative Research Enterprises, Pleasanton CA 94566), World Resour. Rev., 7(4), 541-559, Dec. 1995.

Laboratory experiments suggest the existence of two new sources for N2O: reactions of excited ozone and NO2 with N2 in the troposphere; and hydroxyl radical optically pumped to an excited A state in the stratosphere. A new stratospheric sink may be vibrationally highly excited O2. Further investigation of these processes is important if we are to make sound policy decisions regarding anthropogenic impacts.

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