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 4, NUMBER 1, JANUARY 1991
"Reactions of Hydrofluorocarbons and Hydrochlorofluorocarbons with
the Hydroxyl Radical," D.L. Cooper (Dept. Chem., Univ. Liverpool, POB 147,
Liverpool L69 3BX, UK), N.L. Allan, A. McCulloch, Atmos. Environ., 24A(9),
2417-2419, 1990. Reaction rates for H-atom abstraction are important in
determining the atmospheric residence times of HCFCs and HFCs, regarded as
potential substitutes for fully halogenated CFCs. Reaction rates are reported
and a method is given for predicting unknown rates.
"Laboratory Studies of Some Halogenated Ethanes and Ethers:
Measurements of Rates of Reaction with OH and of Infrared Absorption
Cross-Sections," A.C. Brown (Phys. Chem. Lab., Univ. Oxford., S. Parks Rd.,
Oxford OX1 3QZ, UK), C.E. Canosa-Mas et al., ibid., 2499-2511.
A discharge-flow, resonance-fluorescence technique was used in the
temperature range 230-423 K to measure the reaction rates for potential CFC
substitutes. Measurements are used to calculate ozone and global warming
depletion potentials relative to CFCl3.
"Volatile Organic Compounds in Solfataric Gases," V.A. Isidorov
(Chem. Dept., Leningrad Univ., 198904, Leningrad, USSR), I.G. Zenkevich, B.V.
Ioffe, J. Atmos. Chem., 10(3), 329-340, Apr. 1990.
Data obtained through gas chromatographic analysis of volcanic gas samples
confirm the existence of a natural source of halocarbons that have a long
lifetime in the troposphere. They play an important role in the greenhouse
effect and in the catalytic cycle of destruction of stratospheric ozone.
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Index of Abbreviations