Global Climate Change Digest: Main Page | Introduction | Archives | Calendar | Copy Policy | Abbreviations | Guide to Publishers

GCRIO Home ->arrow Library ->arrow Archives of the Global Climate Change Digest ->arrow February 1994 ->arrow PROFESSIONAL PUBLICATIONS... HALOCARBONS: OTHER SPECIFIC SPECIES Search

U.S. Global Change Research Information Office logo and link to home

Last Updated:
February 28, 2007

GCRIO Program Overview



Our extensive collection of documents.


Get Acrobat Reader

Privacy Policy

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 #d94feb80

"The Environmental History and Probable Future of Fluorocarbon 11," M.A.K. Khalil (Oregon Grad. Inst., POB 91,000, Portland OR 97291), J. Geophys. Res., 98(D12), 23,091-23,106, Dec. 20, 1993. Concentrations are not likely to reach the peaks once predicted, and are likely to decline faster than predicted.

Item #d94feb81

"Scattered Light and Accuracy of the Cross-Section Measurements of Weak Absorptions: Gas and Liquid Phase UV Absorption Cross Sections of CH3CFCl2," A. Fahr (Chem. Kinetics Div., Natl. Inst. Stand. & Technol., Gaithersburg MD 20899), W. Braun, M.J. Kurylo, ibid., 98(D11), 20,467-20,472, Nov. 20, 1993.

Demonstrates that scattered light from the shorter wavelengths can compromise the absorption cross-section measurement. Uses a model to assess the effect and make corrections.

Item #d94feb82

"The Production and Release to the Atmosphere of Chlorodifluoromethane (HCFC 22)," P.M. Midgley, D.A. Fisher (Du Pont Co., Exper. Sta., POB 80320, Wilmington DE 19880), Atmos. Environ., 27A(14), 2215-2223, Oct. 1993.

Presents production and use data for 1980-1991 and production data for 1970-1979. Compares calculated atmospheric concentrations and trends with measurements.

Item #d94feb83

"Formation of Trifluoroacetic Acid from the Atmospheric Degradation of Hydrofluorocarbon 134a: A Human Health Concern?" J.C. Ball (Sci. Res. Lab.-3083, Ford Motor Co., Dearborn, MI 48121), T.J. Wallington, Air & Waste, 43(9), 1260-1262, Sep. 1993.

The estimated maximum concentration of CF3COOH from the breakdown of HFC-134a is 80 nM, well below concentrations used in animal studies that have shown no acute adverse health effects.

Item #d94feb84

"Rate Constant for the Reaction of OH with CH3CCl2F (HCFC-141b) Determined by Relative Rate Measurements with CH4 and CH3CCl3," K. Huder (Jet Propulsion Lab., 4800 Oak Grove Dr., Pasadena CA 91109), W.B. DeMore, Geophys. Res. Lett., 20(15), 1575-1577, Aug. 6, 1993.

Item #d94feb85

"Rate Constants for the Reactions of OH with HFC-134a (CF3CH2F) and HFC-134 (CHF2CHF2)," W.B. DeMore (Jet Propulsion Lab., 4800 Oak Grove Dr., Pasadena CA 91109), Geophys. Res. Lett., 20(13), 1359-1362, July 9, 1993.

Establishes more accurate rate constants; previously the recommended constant for HFC-134a was too high and data for HFC-134 was limited.

Item #d94feb86

"Absorption of Solar Radiation by O2: Implications for O3 and Lifetimes of N2O, CFCl3, and CF2Cl2," K. Minschwaner (NCAR, POB 3000, Boulder CO 80307), R.J. Salawitch, M.B. McElroy, J. Geophys. Res., 98(D6), 10,543-10,561, June 20, 1993. (See GCCD, July-Aug. 1993.)

Item #d94feb87

"Tropospheric Degradation Products of CH2FCF3 (HFC-134a)," E.C. Tuazon (Statewide Air Pollut. Res. Ctr., Univ. Calif., Riverside CA 92521), R. Atkinson, J. Atmos. Chem., 16(4), 301-312, May 1993.

Investigated the relative importance of the two major reaction pathways. Predicted that decomposition is dominant at Earth's surface, and reaction with O2 is dominant at the tropopause.

Item #d94feb88

"Global Tropospheric Distribution and Calibration Scale of HCFC-22," S.A. Montzka (CMDL, NOAA, 325 Broadway, Boulder CO 80303), R.C. Myers et al., Geophys. Res. Lett., 20(8), 703-706, Apr. 23, 1993.

Laboratory measurements suggest a global tropospheric mean about 28% lower than that determined from surface-based measurements. Estimates a mean growth rate for HCFC-22 of 7.3 (±0.3)% yr-1 for 1987-1992.

Item #d94feb89

"OH Reaction Kinetics and Atmospheric Lifetimes of CF3CFHCF3 and CF3CH2Br," D.D. Nelson Jr. (Aerodyne Res. Inc., Billerica MA 01821), M.S. Zahniser, C.E. Kolb, ibid., 20(2), 197-200, Feb. 5, 1993. Found atmospheric lifetimes for the compounds of 42 and 4.1 years, respectively.

Item #d94feb90

"Atmospheric Chemistry of Hydrofluorocarbon 134a. Fate of the Alkoxy Radical CF3O," J. Sehested, T.J. Wallington (Sci. Res. Lab.-3083, Ford Motor Co., POB 2053, Dearborn MI 48121), Environ. Sci. Technol., 27(1), 146-152, Jan. 1993.

Establishes the rate constant for the reaction of CF3O with HFC-134a, and investigates the decomposition of the reaction product, CF3OH.

Item #d94feb91

"Atmospheric Chemistry of Hydrofluorocarbon 134a: Fate of the Alkoxy Radical CF3CFHO," T.J. Wallington (Sci. Res. Lab.-3083, Ford Motor Co., POB 2053, Dearborn MI 48121), M.D. Hurley et al., Environ. Sci. Technol., 26(7), 1318-1324, July 1992.

Investigates decomposition and the reaction with O2 of the radical produced by photooxidation of HFC-134a.

  • Guide to Publishers
  • Index of Abbreviations

  • Hosted by U.S. Global Change Research Information Office. Copyright by Center for Environmental Information, Inc. For more information contact U.S. Global Change Research Information Office, Suite 250, 1717 Pennsylvania Ave, NW, Washington, DC 20006. Tel: +1 202 223 6262. Fax: +1 202 223 3065. Email: Web: Webmaster:
    U.S. Climate Change Technology Program Intranet Logo and link to Home