Shipboard measurements of nitrogen dioxide, nitrous acid, nitric acid and ozone in the Eastern Mediterranean Sea (EN)

Λαζαριδης Μιχαλης (EL)

Ian Colbeck (EN)

Zbyněk Večeřa (EN)

Charlotte Bryant (EN)

Pavel Mikuška (EN)

Lazaridis Michalis (EN)

Πολυτεχνείο Κρήτης (EL)

Technical University of Crete (EN)

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. (EN)

journalArticle

Air--Pollution--Control,Air contaminants,Air pollutants,Air pollution,Air pollution control,Air toxics,Airborne pollutants,Atmosphere--Pollution,Contaminants, Air,Control of air pollution,Pollutants, Air,Toxics, Air,air pollution,air pollution control,air contaminants,air pollutants,air toxics,airborne pollutants,atmosphere pollution,contaminants air,control of air pollution,pollutants air,toxics air (EN)

Technical University of Crete

Institutional Repository Technical University of Crete

School of Environmental Engineering - Journal Publications

Water Air and Soil Pollution (EL)

English

2008

http://purl.tuc.gr/dl/dias/4FB7850D-0818-47CD-81E6-93F6B0036EB710.1007/s11267-007-9133-y

Springer Verlag (EN)