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Global Three‐Dimensional Model Calculations of the Budgets and Present‐Day Atmospheric Lifetimes of CF 2 C l CFC l 2 (CFC‐113) and CHC l F 2 (CFC‐22)
Author(s) -
Golombek Amram,
Prinn Ronald G.
Publication year - 1989
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl016i010p01153
Subject(s) - atmosphere (unit) , atmospheric sciences , refrigerant , environmental science , global warming potential , ozone depletion , ozone , greenhouse gas , ozone layer , absorption (acoustics) , atmospheric chemistry , greenhouse effect , meteorology , global warming , physics , thermodynamics , climate change , geology , oceanography , acoustics , gas compressor
The annual percentage increases in concentrations of the chlorofluorocarbons CF 2 C l CFC l 2 (CFC‐113, an industrial solvent) and CHC l F 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 CHC l F 2 , and 136 or 195 years for CF 2 C l CFC l 2 depending on assumed O 2 absorption cross‐sections) underscoring the need to decrease their emissions in order to minimize their future role in ozone destruction and greenhouse warming.