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- Q7846269 subject Q7210204.
- Q7846269 subject Q8419812.
- Q7846269 abstract "During springtime in the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br−) into reactive halogen species (e.g. Br atoms and BrO) that episodically deplete ozone in the atmospheric boundary layer to near zero levels. Since their discovery in the late 1980s, research on these ozone depletion events (ODEs) has shown the central role ofbromine photochemistry. Due to the autocatalytic nature of the reaction mechanism, it has been called bromine explosion. It's still not fully understood how salts are transported from the ocean and oxidized to become reactive halogen species in the air. Other halogens (chlorine and iodine) are also activated through mechanisms coupled to bromine chemistry. The main consequence of halogen activation is chemical destruction of ozone, which removes the primary precursor of atmospheric oxidation, and generation of reactive halogen atoms/oxides that become the primary oxidizing species. The different reactivity of halogens as compared to OH and ozone has broad impacts on atmospheric chemistry, including near complete removal and deposition of mercury, alteration of oxidation fates for organic gases, and export of bromine into the free troposphere. Recent changes in the climate of the Arctic and state of the Arctic sea ice cover are likely to have strong effects on halogen activation and ODEs.".
- Q7846269 thumbnail Br_explosion.png?width=300.
- Q7846269 wikiPageExternalLink 4375.
- Q7846269 wikiPageWikiLink Q1103.
- Q7846269 wikiPageWikiLink Q1234695.
- Q7846269 wikiPageWikiLink Q1757268.
- Q7846269 wikiPageWikiLink Q19605.
- Q7846269 wikiPageWikiLink Q2298060.
- Q7846269 wikiPageWikiLink Q287919.
- Q7846269 wikiPageWikiLink Q3098657.
- Q7846269 wikiPageWikiLink Q36933.
- Q7846269 wikiPageWikiLink Q3820276.
- Q7846269 wikiPageWikiLink Q40631.
- Q7846269 wikiPageWikiLink Q688.
- Q7846269 wikiPageWikiLink Q7210204.
- Q7846269 wikiPageWikiLink Q786897.
- Q7846269 wikiPageWikiLink Q8419812.
- Q7846269 wikiPageWikiLink Q879.
- Q7846269 wikiPageWikiLink Q925.
- Q7846269 comment "During springtime in the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br−) into reactive halogen species (e.g. Br atoms and BrO) that episodically deplete ozone in the atmospheric boundary layer to near zero levels. Since their discovery in the late 1980s, research on these ozone depletion events (ODEs) has shown the central role ofbromine photochemistry. Due to the autocatalytic nature of the reaction mechanism, it has been called bromine explosion.".
- Q7846269 label "Tropospheric ozone depletion events".
- Q7846269 depiction Br_explosion.png.