1.   As winds sweep these chemical pockets into middle latitudes they encounter sunlight and trigger rapid ozone destruction.

2.   Ozone destruction is most severe over the Antarctic due to climatic and atmospheric extremes.

3.   ...chemical reactions that cause ozone destruction.

4.   Ozone destruction is most pronounced over the Antarctic due to climatic and atmospheric extremes.

5.   The situation is exacerbated by unusually low levels of nitrogen oxides, which inhibit ozone destruction.

6.   But the subtle and continuously changing structural details of the atmosphere that influence the rate and degree of ozone destruction remain obscure.

7.   Climatic conditions needed to trigger ozone destruction by man-made pollutants were nearly perfect for much of this polar winter.

8.   Kaye said deploying the instrument in the summer rather than winter would allow scientists to make seasonal comparisons of the rate of ozone destruction.

9.   Mahlman said that a peak of ozone destruction had yet to occur.