Word: salawitch
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...Anderson flew instruments in a converted U-2 spy plane 20 kilometers (70,000 feet) above the earth's surface. Taking part in the Stratospheric Photo chemistry, Aerosols and Dynamics Expedition [SPADE], the researchers were able to make many measurements simultaneously. This procedure is "unprecedented" according to Ross J. Salawitch, a research associate in Atmospheric Sciences and a co-author of the paper...
...Most of the nitrogen and hydrogen radicals are produced by natural activities," says Salawitch. "But the halogen radicals, primarily bromine and chlorine, are primarily due to industrial activity...
...Salawitch cautions that even with the current data, there are still a lot of uncertainties...
...results are uncertain because lot of key reaction rates have not been measured at low temperature in the lower ozone layer," Salawitch says. "We also really don't have an accurate understanding of how engine exhaust is transported to higher altitudes...
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