European VOC Emission Estimates Evaluated by Measurements and Model Calculations

Observations and model calculations of the concentration of hydrocarbonsat five Scandinavian rural sites during March-June 1993are reported.Decreasing concentrations from March to June are observedat all sites. The highest concentrations of hydrocarbons were found in air massescoming in from the sou...

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Bibliographic Details
Published in:Journal of atmospheric chemistry 1997-11, Vol.28 (1-3), p.173-193
Main Authors: Hov, øystein, Sorteberg, Asgeir, Schmidbauer, Norbert, Solberg, Sverre, Stordal, Frode, Simpson, David, Lindskog, Anne, Areskoug, Hans, Oyola, Pedro, Lättilä, Heikki, Heidam, Niels Z
Format: Article
Language:English
Subjects:
Dispersion
Emission inventories
Emission measurements
Hydrocarbons
Mathematical models
VOCs
Volatile organic compounds
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Summary:Observations and model calculations of the concentration of hydrocarbonsat five Scandinavian rural sites during March-June 1993are reported.Decreasing concentrations from March to June are observedat all sites. The highest concentrations of hydrocarbons were found in air massescoming in from the southwest to southeast, indicating that long rangetransport fromcontinental Europe and the U.K. is important in pollution episodes. An episode of elevated concentrations of hydrocarbons observed at three of the sites in the middle of Marchis described and discussed in relation to the synoptic situation and thepresenceof other chemical compounds (NO^sub 2^, PAN, total nitrate andozone).A Lagrangian numerical model is used to calculate the concentrations of theindividual hydrocarbons at the fivesites and comparison with observations is made.The calculated concentrations for nonmethane hydrocarbons with quite longchemicallifetimes agree well with the observations.For the sum of observed and calculated hydrocarbons the correlationcoefficientsare in the range of 0.65-0.88 for the five sitesand the ratio between calculated and measured concentrations was0.72-0.97, indicating thatthe European VOC emission inventory is quite well estimated.[PUBLICATION ABSTRACT]
ISSN:0167-7764
1573-0662
DOI:10.1023/A:1005859027649