You are not currently logged in.
Access JSTOR through your library or other institution:
Atmospheric Trends and Lifetime of CH$_3$CCl$_3$ and Global OH Concentrations
R. G. Prinn, R. F. Weiss, B. R. Miller, J. Huang, F. N. Alyea, D. M. Cunnold, P. J. Fraser, D. E. Hartley and P. G. Simmonds
New Series, Vol. 269, No. 5221 (Jul. 14, 1995), pp. 187-192
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/2888434
Page Count: 6
You can always find the topics here!Topics: Atmospherics, Calibration, Atmospheric lifetime, Oceans, Gases, Chemicals, Nonlinearity, Halogenated hydrocarbons, Ozone layer, Rates of change
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Preview not available
Determination of the atmospheric concentrations and lifetime of trichloroethane (CH$_3$CCl$_3$) is very important in the context of global change. This halocarbon is involved in depletion of ozone, and the hydroxyl radical (OH) concentrations determined from its lifetime provide estimates of the lifetimes of most other hydrogen-containing gases involved in the ozone layer and climate. Global measurements of trichloroethane indicate rising concentrations before and declining concentrations after late 1991. The lifetime of CH$_3$CCl$_3$ in the total atmosphere is 4.8 ± 0.3 years, which is substantially lower than previously estimated. The deduced hydroxyl radical concentration, which measures the atmosphere's oxidizing capability, shows little change from 1978 to 1994.
Science © 1995 American Association for the Advancement of Science