ICSE Class 7 Answered
What is the reason behind ozone hole in Antartica?
Asked by dibroy12 | 25 Jun, 2018, 09:17: PM
Expert Answer
The severe depletion of the Antarctic ozone layer known as the ozone hole occurs because of the special atmospheric and chemical conditions that exist there and nowhere else on the globe. The very low winter temperatures in the Antarctic stratosphere cause polar stratospheric clouds (PSCs) to form. Special reactions that occur on PSCs, combined with the relative isolation of polar stratospheric air, allow chlorine and bromine reactions to produce the ozone hole in Antarctic springtime.
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