User:Ksaintc4/Tropospheric ozone depletion events/ShuchaoYe Peer Review

In the lead section, the article has a good lead section, which clearly resents the definition of O3 and explains its reaction in the atmosphere. It concisely summary the all content and makes a good introduction.

In the content, the article explains the effects of bromine photochemistry on O3 and how the halogen activation damage O3. But, there is a question that paragraph 2 and 3 may have a head for these two paragraph, which can help to have a good presentation for this article.

Overall, this article has a clear structure from the definition of O3 to its destruction. My suggestion is to add a subtitle for the paragraph 2 and 3.

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