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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



Item #d89mar53

"Kinematics of CO2 Fluxes in the Tropical Atlantic Ocean During the 1983 Northern Summer," V.C. Garšon (UM39, Ctr. Nat. d'╔tudes Spatiales, 18 Ave. E. Belin, 31055 Toulouse Cedex, France), L. Martinon et al., J. Geophys. Res., 94(C1), 855-870, Jan. 15, 1989.

Develops a kinematic box model to assess the relative importance of various factors contributing to the variations of pCO2 in the equatorial surface waters. Focuses attention on the outgassing equatorial belt in the tropical Atlantic Ocean, where CO2 emission markedly increases from east to west. Also investigates the sensitivity of the model to changes in the vertical diffusion coefficient and in the flow field representation. Discusses implications of findings.

Item #d89mar54

"Distribution of the pCO2 in Surface Seawater of the Western and Central Equatorial Pacific During the 1986/87 El Ni˝o/Southern Oscillation Event," H. Inoue (Meteor. Res. Inst., Nagamine 1-1, Tsukuba, Ibaraki 305, Japan), Y. Sugimura, Geophys. Res. Lett., 15(13), 1499-1502, Dec. 1988.

Compares the pCO2 distribution with data obtained during non-ENSO periods and the previous (1982/83) ENSO period. In the 1986/87 event, pCO2 along 180░ and 160░ E was fairly constant, while along 160░ W it varied remarkably (342.8 to 409.4 micro atm). A maximum appeared near the equator, and the pCO2 was high from 3░ N to 5░ S (365.7 to 409.4 micro atm). There was apparently a net positive exchange of CO2 between sea and air in January and February 1987, compared to the 1982/83 ENSO event.

Item #d89mar55

"Estimating the Seasonal Carbon Source-Sink Geography of a Natural, Steady-State Terrestrial Biosphere," E.O. Box (Dept. Geog., Univ. Georgia, Athens GA 30602), J. Appl. Meteor., 27(10), 1109-1124, Oct. 1988.

Presents an improved ecological biosphere model that is more geographic, more easily parameterized, and provides more mechanistic detail than both atmosphere-based and satellite-based approaches. Monthly maps of estimated biospheric carbon source and sink regions, as well as estimates of total fluxes (by 10░ latitudinal belts), are presented for an equilibrium terrestrial biosphere. Results agree only partly with simpler models, and illustrate the effect of the enormous contribution of tropical wet-dry regions to global atmospheric CO2 seasonality.

Item #d89mar56

"Experimental Modeling of CO2 Washout from the Atmosphere by Precipitation," V.V. Alekseyev (Moscow Univ.), S.I. Zaytsev et al., Izvestiya, Atmos. and Oceanic Phys., 785-788, May 1988 (English trans. from Russian, 23(10), 1987).

Discusses the correlation of seasonal variations in atmospheric CO2 with precipitation. Laboratory experiments show raindrops are great CO2 absorbers. This must be considered in the global CO2 cycle and seasonal variations in atmospheric CO2.

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