Abstract
A wide range of halocarbon gases (those containing one or more of the halogens chlorine, fluorine, bromine and iodine) have been identified in the polar atmosphere. Their origins are various, from both anthropogenic and natural sources. Although much is known about the transformations of halocarbons in the stratosphere, and their apparent involvement in Antarctic stratospheric ozone depletion in particular, much less is know about their potential impact on tropospheric ozone chemistry. Nevertheless, the Arctic spring bromine “pulse” and negative correlation between particulate bromine and ozone is compelling evidence for halogen-ozone reactions in the polar troposphere. In the Antarctic, the progressive decline in free tropospheric ozone in austral summer has been attributed to greater UV penetration through the ozone-depleted stratosphere; a possible example of an indirect effect of halocarbons on tropospheric ozone.
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Sturges, W.T. (1993). Halocarbons in the Arctic and Antarctic Atmosphere. In: Niki, H., Becker, K.H. (eds) The Tropospheric Chemistry of Ozone in the Polar Regions. NATO ASI Series, vol 7. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78211-4_9
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DOI: https://doi.org/10.1007/978-3-642-78211-4_9
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