February 28, 2007
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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 1, NUMBER 2, AUGUST 1988
OF GENERAL INTEREST
"Once More on a Possible Impact of CO2 on Climate," K.A.
Kondratyev (Lab. Remote Sensing, Inst. Lake Res., Sevastyanovstr. 9, 196199
Leningrad USSR), Z. fur Meteor., 37(6), 305-314,
The international conference held in October 1985 in Villach, Austria,
addressed the problem of anthropogenic impacts on climate, aiming to make a
clear distinction between observational data showing the growth of CO2 and
results based on approximate simulation modeling. It concluded that the
reliability of available information is inadequate for global climate trends to
be accurately determined, and the complicated nature of the variability and
causal character of climate hinders the detection of the CO2 signal. The state
of numerical climate modeling is briefly analyzed; much work will be needed to
understand present climatic changes.
"Terrestrial Metabolism and Atmospheric CO2 Concentrations,"
R.A. Houghton (Ecosystems Ctr., Marine Biol. Lab., Woods Hole MA 02543), BioScience,
37(9), 672-678, Nov. 1987.
Calculations of net seasonal carbon flux and its year-to-year variation are
potentially useful for measuring and predicting the mid-term (1-50 yr) response
of terrestrial systems to changes in land use, CO2 concentrations, and climate.
An observed increase in the amplitude of the seasonal oscillation of CO2
concentrations has been interpreted as evidence that northern temperate and
boreal forests are accumulating carbon. This article reconciles estimates of
global net primary production of carbon with the net seasonal flux of carbon
calculated from geophysical models, and demonstrates quantitatively how the net
seasonal flux for each hemisphere is related to its terrestrial metabolism.
Beyond balancing the modeled carbon cycle, the study shows that the net uptake
or release of carbon by terrestrial ecosystems, in response to increasing
concentrations of CO2 and changing climate, could provide either positive or
negative feedback on the anticipated warming trend, and either hasten or delay
"Chlorofluorocarbons and Stratospheric Ozone," S. Elliot (Univ.
California, Irvine CA 92717) F.S. Rowland, J. Chem. Ed., 64(5),
387-389, May 1987.
Written to help the non-atmospheric scientist evaluate the issues involved.
Strong circumstantial evidence suggests that the so-called "ozone hole"
discovered recently over the continent of Antarctica is caused by
photodecomposition products of synthetic chlorofluorocarbons (CFCs). The
atmospheric physical chemistry behind CFC-ozone relationships is reviewed from a
historical perspective, and the new developments in Antarctica are described.
Guide to Publishers
Index of Abbreviations