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AGU: Journal of Geophysical Research, Atmospheres

 

Index Terms

  • Atmospheric Composition and Structure: Constituent sources and sinks
  • Atmospheric Composition and Structure: Evolution of the atmosphere
  • Atmospheric Composition and Structure: Troposphere—constituent transport and chemistry
Abstract
Cited By (21)
 

Abstract

Effect of stratosphere-troposphere exchange on the future tropospheric ozone trend

W. J. Collins

Met Office, Bracknell, UK

R. G. Derwent

Met Office, Bracknell, UK

B. Garnier

Met Office, Bracknell, UK

C. E. Johnson

Met Office, Bracknell, UK

M. G. Sanderson

Met Office, Bracknell, UK

D. S. Stevenson

Department of Meteorology, University of Edinburgh, Edinburgh, UK

This paper investigates the impact of circulation changes in a changed climate on the exchange of ozone between the stratosphere and the troposphere. We have identified an increase in the net transport of ozone into the troposphere in the future climate of 37%, although a decreased ozone lifetime means that the overall tropospheric burden decreases. There are regions in the midlatitudes to high latitudes where surface ozone is predicted to increase in the spring. However, these increases are not significant. Significant ozone increases are predicted in regions of the upper troposphere. The general increase in the stratospheric contribution (O3s tracer) to tropospheric ozone in the climate changed scenario indicates that the stratosphere will play an even more significant role in the future.

Published 15 May 2003.

Citation: Collins, W. J., R. G. Derwent, B. Garnier, C. E. Johnson, M. G. Sanderson, and D. S. Stevenson (2003), Effect of stratosphere-troposphere exchange on the future tropospheric ozone trend, J. Geophys. Res., 108(D12), 8528, doi:10.1029/2002JD002617.

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