Detection of stratospheric ozone intrusions by windprofiler radars

W. K. Hocking (), T. Carey-Smith, D. W. Tarasick, P. S. Argall, K. Strong, Y. Rochon, I. Zawadzki and P. A. Taylor
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W. K. Hocking: University of Western Ontario, London, Ontario, N6A 3K7 Canada
T. Carey-Smith: University of Western Ontario, London, Ontario, N6A 3K7 Canada
D. W. Tarasick: Environment Canada, 4905 Dufferin Street, Downsview, Ontario, M3H 5T4 Canada
P. S. Argall: University of Western Ontario, London, Ontario, N6A 3K7 Canada
K. Strong: University of Toronto, 60 St George Street, Toronto, Ontario, M5S 1A7 Canada
Y. Rochon: Environment Canada, 4905 Dufferin Street, Downsview, Ontario, M3H 5T4 Canada
I. Zawadzki: McGill University, 805 Sherbrooke Street W., Montreal, Quebec, H3A 2K6 Canada
P. A. Taylor: York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3 Canada

Nature, 2007, vol. 450, issue 7167, 281-284

Abstract: Ozone gets on down Ozone is critical to the chemical and thermal balance of Earth's troposphere, controlling the capacity of this layer of the atmosphere to oxidize and remove other pollutants via the formation of hydroxyl radicals. Tropospheric ozone is also an important greenhouse gas. Photochemistry in the lower troposphere is the major source of tropospheric ozone, but the intrusion of stratospheric ozone into the troposphere is also a factor in the overall climatology budget. Using the latest windprofiler radars, together with ozonesonde launches and computer modelling, Hocking et al. have identified rapid changes in radar tropopause height as a diagnostic for the intrusion of stratospheric ozone to lower altitudes, a technique that may help to establish the mechanism involved in the phenomenon.

Date: 2007
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DOI: 10.1038/nature06312

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