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Neff WD. Decadal time scale trends and variability in the tropospheric circulation over the South Pole. ACTA ACUST UNITED AC 1999. [DOI: 10.1029/1999jd900483] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Logan JA. An analysis of ozonesonde data for the lower stratosphere: Recommendations for testing models. ACTA ACUST UNITED AC 1999. [DOI: 10.1029/1999jd900216] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Roscoe HK, Jones AE, Lee AM. Midwinter Start to Antarctic Ozone Depletion: Evidence from Observations and Models. Science 1997. [DOI: 10.1126/science.278.5335.93] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Measurements of total ozone at Faraday, Antarctica (65°S), by a visible spectrometer show a winter maximum. This new observation is consistent with the descent of air within the polar vortex during early winter, together with ozone depletion starting in midwinter. Chemical depletion at these latitudes in midwinter is suggested by existing satellite observations of enhanced chlorine monoxide and reduced ozone above 100 hectapascals and by reduced ozone in sonde profiles. New three-dimensional model calculations for 1994 confirm that chemical ozone depletion started in June at the sunlit vortex edge and became substantial by late July. This would not have been observed by most previous techniques, which either could not operate in winter or were closer to the Pole.
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Affiliation(s)
- H. K. Roscoe
- H. K. Roscoe and A. E. Jones, British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK
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