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Chemistry/climate feedbacks and biogenic emissions

Pyle, John A. and Warwick, N. J. and Yang, X. and Young, Paul and Zeng, Guang (2007) Chemistry/climate feedbacks and biogenic emissions. Philosophical Transactions of the Royal Society of London A, 365 (1856). pp. 1727-1740. ISSN 0264-3820

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Abstract

The oxidizing capacity of the atmosphere is affected by anthropogenic emissions and is projected to change in the future. Model calculations indicate that the change in surface ozone at some locations could be large and have significant implications for human health. The calculations depend on the precise scenarios used for the anthropogenic emissions and on the details of the feedback processes included in the model. One important factor is how natural biogenic emissions will change in the future. We carry out a sensitivity calculation to address the possible increase in isoprene emissions consequent on increased surface temperature in a future climate. The changes in ozone are significant but depend crucially on the background chemical regime. In these calculations, we find that increased isoprene will increase ozone in the Northern Hemisphere but decrease ozone in the tropics. We also consider the role of bromine compounds in tropospheric chemistry and consider cases where, in a future climate, the impact of bromine could change.

Item Type: Article
Journal or Publication Title: Philosophical Transactions of the Royal Society of London A
Uncontrolled Keywords: tropospheric ozone ; climate change ; biogenic emissions ; isoprene ; tropospheric bromine
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 58854
Deposited By: ep_importer_pure
Deposited On: 30 Oct 2012 15:12
Refereed?: Yes
Published?: Published
Last Modified: 30 Oct 2012 15:12
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/58854

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