Tropospheric Response to Stratospheric Ozone Loss

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Read Full Article Cited by GEOPHYSICAL RESEARCH LETTERS, VOL. 28, NO. 8, PAGES 1547–1550, 2001 Tropospheric Response to Stratospheric Ozone Loss Ina T. Kindem Geophysical Institute, University of Bergen, Bergen, Norway Bo Christiansen Danish Meteorological Institute, Copenhagen, Denmark Abstract The response to realistic total column ozone trends on the troposphere and the stratosphere as simulated by the ARPEGE General Circulation Model (GCM) has been investigated. In both hemispheres, the lower stratosphere cooled and the polar vortex strengthened significantly during spring/early summer. The cooling trend was weaker than the observed trend in the Northern Hemisphere (NH), but stronger than the observed trend in the Southern Hemisphere (SH). In the troposphere, the changes in geopotential height resembled the positive phase of the Arctic Oscillation (AO) in the NH in March and the positive phase of the Antarctic Oscillation (AAO) in the SH during summer (December - February). Received 30 October 2000; accepted 29 January 2001. Read Full Article Cited by Citation: Kindem, I. T., and B. Christiansen (2001), Tropospheric Response to Stratospheric Ozone Loss, Geophys. Res. Lett., 28(8), 1547–1550. Copyright 2001 by the American Geophysical Union.