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Shipboard measurements of nitrogen dioxide, nitrous acid, nitric acid and ozone in the Eastern mediterranean sea

Večeřa, Z and Mikuška, P and Smolík, J and Eleftheriadis, K and Bryant, C and Colbeck, I and Lazaridis, M (2008) 'Shipboard measurements of nitrogen dioxide, nitrous acid, nitric acid and ozone in the Eastern mediterranean sea.' Water, Air, and Soil Pollution: Focus, 8 (1). 117 - 125. ISSN 1567-7230

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Abstract

Measurements of nitrogen dioxide, nitrous and nitric acids as well as ozone were made using newly developed instrumentation onboard the research vessel Aegeon in the Aegean Sea between 25th-29th July 2000. Typical nitrogen dioxide concentrations observed aboard the boat were 4-6 ppb (v/v) with a broad maximum of 20-30 ppb (v/v). Ozone concentrations typically ranged between 40 and 80 ppb (v/v). Mixing ratios of both nitric and nitrous acids in the ambient air of the Aegean Sea were mainly below 50 ppt (v/v). The data also showed a number of short pollution episodes with rapid changes in the concentration of reactive nitrogen compounds [nitrogen dioxide maximum up to 164 ppb (v/v), nitric acid maximum up to 12 ppb (v/v), nitrous acid maximum up to 2.7 ppb (v/v)] and ozone [maximum up to 88 ppb (v/v)]. These episodes were correlated with pollution plumes originating from boats upwind, at short distance, from the R/V Aegeon. The measurements revealed the importance of nitrous and nitric acids for the transport of nitrogen to marine biota in busy ship lanes. © 2007 Springer Science+Business Media B.V.

Item Type: Article
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculty of Science and Health > Life Sciences, School of
Depositing User: Jim Jamieson
Date Deposited: 20 Jan 2012 09:52
Last Modified: 15 Oct 2019 19:15
URI: http://repository.essex.ac.uk/id/eprint/2133

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