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Global three-dimensional model calculations of the budgets and present-day atmospheric lifetimes of CF2ClCFCl2 (CFC-113) and CHClF2 (CFC-22)The annual percentage increases in concentrations of the chlorofluorocarbons CFC-113 (an industrial solvent) and CFC-22 (a refrigerant) are the highest among major chlorofluorocarbons in the atmosphere today. The present-day atmospheric lifetimes for these species are computed using a global three-dimensional dynamical-chemical model. The present-day lifetimes of both are long (15.5 years for CFC-22 and 136 or 195 years for CFC-113, depending on assumed O2 absorption cross sections), underscoring the need to decrease their emissions in order to minimize their future role in ozone destruction and greenhouse warming.
Document ID
19900036084
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Golombek, Amram
(MIT, Cambridge, MA; Israel Institute for Biological Research Ness-Ziona, United States)
Prinn, Ronald G.
(MIT Cambridge, MA, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1989
Publication Information
Publication: Geophysical Research Letters
Volume: 16
ISSN: 0094-8276
Subject Category
Environment Pollution
Accession Number
90A23139
Funding Number(s)
CONTRACT_GRANT: NAGW-474
Distribution Limits
Public
Copyright
Other

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