An Isoprene Mechanism Intercomparison

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• Dr Alex Archibald, Centre for Atmospheric Science, University of Cambridge
• Monday 19 October 2009, 14:15-15:15
• Unilever Lecture Theatre, Department of Chemistry.

If you have a question about this talk, please contact Dr Francis Pope.

This talk will present results from an intercomparison concerning the gas phase chemical mechanisms used in a variety of models to describe the oxidation of isoprene in the atmosphere. Eight different mechanisms are studied that range in complexity (smallest mechanism has only 24 reactions, largest 583). The results show that there are large differences between mechanisms for a range of compounds. No mechanisms are able to simulate the high levels of OH observed coincident with high isoprene and low NOx. A further investigation looks into assessing very recent findings of potential HOx formation and recycling in the isoprene oxidation mechanism.

This talk is part of the Centre for Atmospheric Science seminars, Chemistry Dept. series.

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