Global three-dimensional model calculations of the budgets and present-day atmospheric lifetimes of CF sub 2 C l CFC l sub 2 (CFC-113) and CHC l F sub 2 2 (CFC-22)
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (US)
The annual percentage increases in concentrations of the chlorofluorocarbons CF{sub 2}ClCFCl{sub 2} (CFC-113, an industrial solvent) and CHClF{sub 2} (CFC-22, a refrigerant) are the highest among major chlorofluorocarbons in the atmosphere today. We have computed the present-day atmospheric lifetimes for these species using a global three-dimensional dynamical-chemical model. The present-day lifetimes of both are long (15.5 years for CHClF{sub 2}, and 136 or 195 years for CF{sub 2}ClCFCl{sub 2} depending on assumed O{sub 2} absorption cross-sections) underscoring the need to decrease their emissions in order to minimize their future role in ozone destruction and greenhouse warming. {copyright} American Geophysical Union 1989
- OSTI ID:
- 5196296
- Journal Information:
- Geophysical Research Letters; (USA), Journal Name: Geophysical Research Letters; (USA) Vol. 16:10; ISSN 0094-8276; ISSN GPRLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
AROMATICS
ATMOSPHERIC CHEMISTRY
CHEMISTRY
COMPUTER CALCULATIONS
EARTH ATMOSPHERE
ENVIRONMENTAL EFFECTS
FLUIDS
GLOBAL ASPECTS
GREENHOUSE EFFECT
HALOGENATED AROMATIC HYDROCARBONS
LAYERS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OZONE LAYER
POLLUTION
REFRIGERANTS
STRATOSPHERE
THREE-DIMENSIONAL CALCULATIONS
WORKING FLUIDS