Special Issue Article

Might dimming the sun change atmospheric ENSO teleconnections as we know them?

  1. Peter Braesicke1,*,
  2. Olaf Morgenstern2,
  3. John Pyle1

Article first published online: 17 SEP 2010

DOI: 10.1002/asl.294

Issue

Atmospheric Science Letters

Atmospheric Science Letters

Special Issue: Geoengineering

Volume 12, Issue 2, pages 184–188, April/June 2011

Additional Information

How to Cite

Braesicke, P., Morgenstern, O. and Pyle, J. (2011), Might dimming the sun change atmospheric ENSO teleconnections as we know them?. Atmosph. Sci. Lett., 12: 184–188. doi: 10.1002/asl.294

Author Information

  1. 1

    Department of Chemistry, National Centre for Atmospheric Science, University of Cambridge, Cambridge, UK

  2. 2

    National Institute of Water and Atmospheric Research, Lauder, New Zealand

*Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.

Publication History

  1. Issue published online: 15 APR 2011
  2. Article first published online: 17 SEP 2010
  3. Manuscript Accepted: 3 AUG 2010
  4. Manuscript Revised: 29 JUL 2010
  5. Manuscript Received: 26 FEB 2010

Funded by

  • NERC

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Keywords:

  • geoengineering;
  • stratospheric ozone;
  • ENSO teleconnections;
  • coupled models

Abstract

We use a troposphere–stratosphere chemistry-climate model to investigate the impact of a 10% reduction in solar irradiance. Starting from the changes in global mean surface temperature modelled, we study changes of forced atmospheric variability. Large increases in ozone interacting with the meteorology are modelled, exemplified by changes in El Niño/Southern Oscillation (ENSO)-related teleconnection patterns. The observed Northern Hemisphere centre of action at 50 hPa, modelled in our base integration, disappears in the run with reduced solar irradiance. This change in forced stratospheric variability highlights the point that the assessment of geoengineering schemes need to consider many possible feedbacks. Copyright © 2010 Royal Meteorological Society

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