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GEOPHYSICAL RESEARCH LETTERS,
VOL. 31,
L04116,
4 PP., 2004
doi:10.1029/2003GL018844
Arctic ozone loss and climate change
Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany
European Ozone Research Coordinating Unit, Cambridge, UK
School of the Environment, University of Leeds, Leeds, UK
Meteorological Institute, Free Univ. of Berlin, Berlin, Germany
We report the first empirical quantification of the relation between winter-spring loss of Arctic ozone and changes in stratospheric climate. Our observations show that ∼15 DU additional loss of column ozone can be expected per Kelvin cooling of the Arctic lower stratosphere, an impact nearly three times larger than current model simulations suggest. We show that stratospheric climate conditions became significantly more favorable for large Arctic ozone losses over the past four decades; i.e., the maximum potential for formation of polar stratospheric clouds increased steadily by a factor of three. Severe Arctic ozone loss during the past decade occurred as a result of the combined effect of this long-term climate change and the anthropogenic increase in stratospheric halogens.
Received 15 October 2003; accepted 21 January 2004; published 28 February 2004.
Citation: (2004), Arctic ozone loss and climate change, Geophys. Res. Lett., 31, L04116, doi:10.1029/2003GL018844.
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