Evidence for variability of atmospheric hydroxyl radicals over the past quarter century

  title={Evidence for variability of atmospheric hydroxyl radicals over the past quarter century},
  author={Ronald G. Prinn and Jin Huang and R F Weiss and Derek M. Cunnold and P. J. B. Fraser and Peter G. Simmonds and Archie McCulloch and Christina M. Harth and Stefan Reimann and Peter K. Salameh and Simon O’Doherty and Ray H. J. Wang and Lyman W. Porter and Ben R. Miller and Paul B Krummel},
[1] The hydroxyl free radical (OH) is the major oxidizing chemical in the atmosphere, destroying about 3.7 petagrams (Pg) of trace gases each year, including many gases involved in ozone depletion, the greenhouse effect and urban air pollution. Measurements of 1,1,1-trichloroethane (methyl chloroform, CH3CCl3), which reacts with OH, provide the most accurate method currently utilized for determining the global behavior of OH. We report that CH3CCl3 levels rose steadily from 1978 to reach a… CONTINUE READING


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