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Effects of climate-induced changes in isoprene emissions after the eruption of Mount Pinatubo

Telford, P. J. and Lathiere, Juliette and Abraham, N. L. and Archibald, A. T. and Braesicke, P. and Johnson, C. E. and Morgenstern, O. and O'Connor, F. M. and Pike, R. C. and Wild, Oliver and Young, Paul and Beerling, D. J. and Hewitt, C. N. and Pyle, J. A. (2011) Effects of climate-induced changes in isoprene emissions after the eruption of Mount Pinatubo. Procedia Environmental Sciences, 6. pp. 199-205.

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Abstract

The eruption of Mt. Pinatubo in June 1991 was the largest in the twentieth century. One of its effects was to produce cooler and drier conditions in the years following the eruption. We present the results of an integrated model study of the effect of these climatic changes on the emissions of isoprene from the biosphere. Our emissions model simulations showed that global isoprene emissions were reduced by 9% from 1990 to 1992. When incorporated into our model of global atmospheric chemistry this reduction of isoprene emissions led to an increase in the tropospheric OH burden of 2%. This caused an increase in the removal of methane via oxidation by OH of up to 5 Tg per year. This could have contributed to the observed changes in methane growth rate at this time.

Item Type: Article
Journal or Publication Title: Procedia Environmental Sciences
Uncontrolled Keywords: Pinatubo ; isoprene ; biogenic emissions ; oxidising capacity ; methane
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 53652
Deposited By: ep_importer_pure
Deposited On: 24 Apr 2012 01:19
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:21
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/53652

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