Skip to Main Content
Book Chapter

The tropospheric sulphur cycle and the role of volcanic SO2

By
D. S. Stevenson
D. S. Stevenson
Institute for Meteorology, University of Edinburgh, King's Buildings, Edinburgh, EH9 3JZ, UK
Search for other works by this author on:
C. E. Johnson
C. E. Johnson
Climate Research, Meteorological Office, London Road, Bracknell, RG12, 2SZ, UK
Search for other works by this author on:
W. J. Collins
W. J. Collins
Climate Research, Meteorological Office, London Road, Bracknell, RG12, 2SZ, UK
Search for other works by this author on:
R. G. Derwent
R. G. Derwent
Climate Research, Meteorological Office, London Road, Bracknell, RG12, 2SZ, UK
Search for other works by this author on:
Published:
January 01, 2003

Abstract

A global three-dimensional chemistry-transport model has been applied to study the tropospheric sulphur cycle, and in particular the volcanic component. The model is in general agreement with previous studies of the global S budget. We find that volcanic emissions constitute 10% of the present-day global SO2 source to the atmosphere, but form 26% of the SO2 burden, and 14% of the sulphate aerosol burden. Two previous modelling studies suggested that the volcanic fraction of sulphate was 18% and 35%, from sources representing 7% and 14%, respectively, of the global total SO2 emission. The results are dependent upon various assumptions about volcanic emissions (magnitude, geographical location, altitude), the global distribution of oxidants, and the physical processes of dry and wet deposition. Because of this dependence upon poorly constrained parameters, it is unclear which modelling study is closest to the truth.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

Geological Society, London, Special Publications

Volcanic Degassing

C. Oppenheimer
C. Oppenheimer
Search for other works by this author on:
D. M. Pyle
D. M. Pyle
Search for other works by this author on:
J. Barclay
J. Barclay
Search for other works by this author on:
Geological Society of London
Volume
213
ISBN electronic:
9781862394612
Publication date:
January 01, 2003

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Subscribe Now