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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 2, NUMBER 3, MARCH 1989

PROFESSIONAL PUBLICATIONS...
ATMOSPHERIC CO₂

Item #d89mar53

"Kinematics of CO₂ Fluxes in the Tropical Atlantic Ocean During the 1983 Northern Summer," V.C. Garçon (UM39, Ctr. Nat. d'Études 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 Niño/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.