Question

What susbstances are thought to be main sources of chlorine radicals in atmosphere

Answer 1

Throughout much of the tropical and middle latitude stratosphere, more than 80% of the 3.7 ppbv of chlorine is in the reservoir species HCl, ClONO2, and HOCl. In the lower stratosphere, the reactive species ClO and Cl concentrations are only 5 - 30 pptv, at most a few percent of Cly.

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Answer 2

Explanation:

Its principal source is acidification of salt spray - reaction of atmospheric sulfuric and nitric acids with chloride ions in aerosols.