VOC measurements on board the Zeppelin NT during the PEGASOS campaigns 2012

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• Julia Jaeger (Forschungszentrum Jülich)
• Monday 17 March 2014, 14:15-15:30
• Unilever Lecture Theatre, Department of Chemistry.

If you have a question about this talk, please contact Dr Amanda Maycock.

Volatile organic compounds (VOCs) comprise a large number of different species. Most of the VOCs are emitted on the Earth’s surface from a variety of biogenic and anthropogenic sources. VOCs are environmentally important as they are oxidized by the OH radical and thus significantly determine its lifetime. This study aims to deepen the understanding of the spatial and vertical distribution of VOCs in the lower troposphere. Using a newly developed GC-MSD on board the Zeppelin NT, fast VOCs measurements were conducted during the PEAGSOS campaigns across the Netherlands and Italy in 2012. The results show that the concentrations of the primary emitted VOCs are lower compared to the oxygenated VOCs (OVOCs). Particularly, the comparison of the results to the measured OH reactivity reveals that the OVO Cs are of great importance as they are one of the largest OH sinks across central and southern Europe.

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

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