Articles | Volume 17, issue 19
Atmos. Chem. Phys., 17, 12071–12080, 2017
https://doi.org/10.5194/acp-17-12071-2017
Atmos. Chem. Phys., 17, 12071–12080, 2017
https://doi.org/10.5194/acp-17-12071-2017

Research article 12 Oct 2017

Research article | 12 Oct 2017

Typical meteorological conditions associated with extreme nitrogen dioxide (NO2) pollution events over Scandinavia

Manu Anna Thomas and Abhay Devasthale

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Latest update: 05 Aug 2021
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Short summary
Episodes of extreme pollution events of nitrogen dioxide (NO2) can seriously hamper air quality. But under which meteorological conditions do such extreme pollution events occur over Scandinavia? Using observational and reanalysis data it is shown that south-westerly winds (sustained for at least a few days) dominate during extreme events and cause an increase in humidity and clouds. South-easterly winds have the second largest contribution and the pollution transport is rapid when they prevail.
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