Ozone layer chemists represent Nobel 'first.'

Article Abstract:

Paul Crutzen of the Max-Planck-Institute for Chemistry in Germany, Mario Molina of the Massachusetts Institute of Technology and F. Sherwood Rowland of the University of California at Irvine, were awarded the Nobel prize in chemistry for their work identifying the threat of the depletion of stratospheric ozone by anthropogenic compounds. In 1970, Crutzen showed that certain nitrogen oxides produced by organisms are catalysts in ozone depletion. In 1974, Molina and Rowland demonstrated that chlorofluorocarbons (CFCs), used in aerosols, produce similar catalysts. This led to the banning of CFCs in the US.

Achievements and awards, Molina, Mario, Crutzen, Paul, Rowland, Sherwood F.

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Stratospheric ClO and ozone from the Microwave Limb Sounder on the Upper Atmosphere Research Satellite

Article Abstract:

The results of 18 months of measurements of ClO levels in the Arctic and Antarctic regions are presented. Measurements were obtained using the satellite-borne Microwave Limb Sounder launched in Sep 1991. ClO is the predominant of form chlorine implicated in ozone depletion. The results showed that existing chlorine in the lower stratosphere were completely converted into reactive forms in both the Arctic and Antarctic regions. In the Antarctic region, enhanced ClO levels occurred long before ozone thr formation of an ozone hole. The implications for efforts to preserve the ozone layer are discussed.

Environmental aspects, Antarctic regions, Arctic regions, Chlorine oxides

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Longitudinal variation in springtime ozone trends

Article Abstract:

Longitudinal differences in mid-latitude ozone trends in the Northern Hemisphere spring can be attributed to decadal fluctuations in the circulation and transport of ozone-depleted air from the polar vortex. Depletion of the Antarctic vortexes has little impact on southern mid-latitudes in spring.

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