February 28, 2007
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A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 7, NUMBER 2, FEBRUARY 1994
- HALOCARBONS: GENERAL ANALYSES
Chlorofluorocarbon Replacements: OH Reaction Rate Constants
Between 250 and 315 K and Infrared Absorption Spectra," N.L.
Garland (Chem. Div., Code 6111, Naval Res. Lab., Washington DC
20375), L.J. Medhurst, H.H. Nelson, J. Geophys. Res., 98(D12),
23,107-23,111, Dec. 20, 1993.
Estimated tropospheric lifetimes suggest that E 134 and FC
236fa may have significant global warming potential, while FC
236ea and FC 236cb do not.
Warming from Chlorofluorocarbons and Their Alternatives: Time
Scales of Chemistry and Climate," M.K.W. Ko (Atmos. &
Environ. Res. Inc., 840 Memorial Dr., Cambridge MA 01730), N.D.
Sze et al., Atmos. Environ., 27A(4), 581-587, Mar.
1993. (See GCCD, May 1993.)
Cross Sections and Global Warming Potentials of 10 Alternative
Hydrohalocarbons," C. Clerbaux (Lab. Chim. Phys.
Moléculaire, CPI 160/09, Univ. Libre Bruxelles, 1050 Brussels,
Belg.), R. Colin et al., J. Geophys. Res., 98(D6),
10,491-10,497, June 20, 1993.
Obtained absorption cross sections between 600 and 1500 cm-1,
and used the integrated cross sections in a two-dimensional model
to calculate the global warming potentials.
CFC Replacements: Tropospheric Lifetimes of C3 Hydrofluorocarbons
and Hydrofluoroethers," D.L. Cooper (Dept. Chem., Univ.
Liverpool, POB 147, Liverpool L69 3BX, UK), T.P. Cunningham et
al., Atmos. Environ., 27A(1), 117-119, Jan. 1993.
Identifies factors that appear to favor short lifetimes for HFEs.
Transformation Products of a Series of Hydrofluorocarbons and
Hydrochlorofluorocarbons," E.C. Tuazon (Statewide Air
Pollut. Res. Ctr., Univ. Calif., Riverside CA 92521), R.
Atkinson, J. Atmos. Chem., 17(2), 179-199, Aug.
1993. Quantified the products of the Cl-atom initiated reactions.
Alternatives: A Fresh Look," K. Srinivasan (Dept. Mech.
Eng., Indian Inst. Sci., Bangalore 560 012, India), Environ.
Conserv., 19(4), 339-341, Winter 1992-1993.
Re-examines the CFC issue by looking at how molecular weight,
size and dipole moment of R-134a and R-123 may affect the
chemical equilibrium of ice particles in polar stratospheric
clouds and influence photochemical reactions in them.
Investigations of the Deposition of Oxidation Products of
Hydrochlorofluorocarbons (HCFCs) and Hydrofluorocarbons (HFCs) to
Aqueous Solutions," E.O. Edney (AREAL, U.S. EPA, Res.
Triangle Pk. NC 27711), D.J. Driscoll, Water, Air, Soil
Pollut., 66(1-2), 97-110, Jan. 1993.
Results were consistent with previous findings that deposition
of the oxidation products to oceans and cloudwater was
sufficiently fast that they are unlikely to be transported to the
Warming Potential Due to Chlorofluorocarbons and Their
Substitutes," S. Guangyu (Inst. Atmos. Phys., Chinese Acad.
Sci., Beijing 100029, China), Chinese J. Atmos. Sci., 16(3),
240-248, 1992. The global warming potentials of most of the
proposed substitutes are significantly lower than those of the
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Index of Abbreviations