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

FROM VOLUME 5, NUMBER 5, MAY 1992

PROFESSIONAL PUBLICATIONS...
HALOCARBONS: SOURCES AND DISTRIBUTION

Item #d92may24

"Global Production and Emissions of Bromochlorodifluoromethane and Bromotrifluoromethane (Halons 1211 and 1301)," A. McCulloch (Environ. Dept., ICI Chem. Ltd., Runcorn, Cheshire WA7 4QD, UK), Atmos. Environ., 26A(7), 1325-1329, 1992.

Data were assembled from audited values submitted by producers within OECD countries, and from estimates of production in the USSR and China. Annual emissions of halons, calculated from the production figures and industrial estimates of the annual percentages released, are generally consistent with measured atmospheric concentrations.

Item #d92may25

"Naturally and Anthropogenically Produced Bromoform in the Kattegat, a Semi-Enclosed Oceanic Basin," E. Fogelqvist (Oceanog. Lab., Swed. Meteor. Hydrol. Inst., POB 2212, S-403 14 Göteborg, Swed.), M. Krysell, J. Atmos. Chem., 13(4), 315-324, Nov. 1991.

Discusses the origin of bromoform in seawater, as well as possible sinks and breakdown mechanisms. A bromoform budget calculated for the area between Sweden and Denmark, where the input of bromoform from a power plant is significant, shows biogenic and anthropogenic contributions to be locally comparable.

Item #d92may26

"Levels of Airborne Halocarbons at Urban and Mountain Forest Sites in Germany and at the Atlantic Coast," W. Frank, H.J.C. Neves, H. Frank (Univ. Tübingen, Inst. Toxikol., Wilhelmstr. 56, 7400 Tübingen, Ger.), Chemosphere, 23(5), 609-626, 1991.

Concentrations of C1- and C2-halocarbons have been measured by automatic sampling at two urban and three forest sites in Germany and on the Atlantic coast of Portugal. Forest levels are higher than on the coast; urban levels are 10 to 100 times higher. The time variability of individual species are described.

Item #d92may27

"Distributions of Several Halogenated Hydrocarbons in the Atmospheric Surface Layer above the Norway and Greenland Seas," G.T. Burova (Central Aerol. Observatory), A.G. Katrick, E.A. Cayanova, Izvestiya, Atmos. Ocean Phys., 25(10), 1989. (English Ed., pp. 827-828, May 1990.)

Presents measurements of Freon-11, chloroform, carbon tetrachloride and tetrachloroethylene obtained by gas chromatography during cruises in the Norway and Greenland seas, and discusses their temporal variability and dependence on wind direction.