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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 5, NUMBER 9, SEPTEMBER 1992

PROFESSIONAL PUBLICATIONS...
CHEMICAL CYCLES: CARBONYL SULFIDE


Item #d92sep86

"The Oceanic Source of Carbonyl Sulfide (COS)," N. Mihalopoulos (Ctr. Faibles Radioactiv., Lab. mixte CNRS-CEA, Ave. de la Terrasse, 91198, Gif-sur-Yvette Cedex, France), B.C. Nguyen et al., Atmos. Environ., 26A(8), 1383-1394, June 1992.

Concentrations in both seawater and the marine atmospheric boundary layer have been taken for two years at Amsterdam Island and during cruises in regions of differing productivity. The COS supersaturation of surface coastal seawater displays diurnal and seasonal cycles; that of open ocean surface water is lower. Estimates a global oceanic flux of 0.43 Tg COS yr-1.


Item #d92sep87

"Photochemical Production of Carbonyl Sulfide in Seawater and Its Emission to the Atmosphere," M.O. Andreae (Biogeochem. Dept., M. Planck Inst. Chem., POB 3060, D-6500 Mainz, Ger.), Global Biogeochem. Cycles, 6(2), 175-184, June 1992.

Measurements in the surface waters of the temperate and subtropical North Atlantic and the Gulf of Mexico showed COS to be usually supersaturated with respect to atmospheric equilibrium. Concentrations and fluxes to the atmosphere depend strongly on marine productivity. Estimates a total flux from the oceans of 13 Gmol yr-1.


Item #d92sep88

"Ground-Based Infrared Measurements of Carbonyl Sulfide Total Column Abundances: Long-Term Trends and Variability," C.P. Rinsland (NASA-Langley, Hampton VA 23665), R. Zander et al., J. Geophys. Res., 97(D5), 5995-6002, Apr. 20, 1992.

Compares results from high-resolution infrared solar absorption spectra recorded at Kitt Peak in Arizona and in the Swiss Alps. Taken together, results indicate that there has been no significant change in the COS total column abundance at northern midlatitudes over the last decade.

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