Physics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982georl...9..481r&link_type=abstract
Geophysical Research Letters, vol. 9, Apr. 1982, p. 481-484.
Physics
6
Air Pollution, Atmospheric Chemistry, Atmospheric Effects, Chlorocarbons, Chlorofluoromethane, Earth Atmosphere, Fluorocarbons, Atmospheric Models, Calibrating, Dichlorides, Exhaust Emission, Ozone, Pollution Monitoring
Scientific paper
The magnitude and significance of the observed atmospheric burden of CCl2F2 is considered. Published data are compared for (1) absolute atmospheric burden, involving calculated versus observed integrated worldwide concentrations of CCl2F2 at any of several points in time; (2) time trend, involving calculated versus observed changes in relative concentrations at particular locations over the period of observation; and (3) north/south ratio, with comparison of the simultaneously measured concentration at fixed locations in both the Northern and Southern Hemispheres. Three hypothetical emissions estimates are given which satisfactorily simulate the atmospheric observations by all three tests. The estimates by the Chemical Manufacturers Association, however, fail to fit the observations with stratospheric loss alone in all tests. The inclusion of tropospheric loss processes appreciably worsens the agreement.
Makide Yoshihiro
Montague D. C.
Rowland Sherwood F.
Tyler Stanley C.
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