Formation of HNO3 and NO3- in the anthropogenically-influenced eastern Mediterranean marine boundary layer

Details Formation of HNO3 and NO3- in the anthropogenically-influenced eastern Mediterranean marine boundary layer Formation of HNO3 and NO3- in the anthropogenically-influenced eastern Mediterranean marine boundary layer

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3305811v&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 5, CiteID L05811

Mathematics

Logic

13

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Constituent Sources And Sinks, Atmospheric Composition And Structure: Troposphere: Composition And Chemistry, Biogeosciences: Nitrogen Cycling, Global Change: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 4805, 4912)

Scientific paper

To investigate the seasonal behaviour of nitrate radicals (NO3) as a source of nitric acid (HNO3) and particulate nitrate (NO3-) in the eastern Mediterranean atmosphere, we conducted NO3 measurements on the island of Crete for more than two years. Ancillary measurements of chemical compounds and meteorological parameters were used to analyse the observations. Nighttime production of HNO3 plus NO3-, as initiated by NO3 radicals, accounts for about 50-65% of the total production rate depending on season. The remainder is produced by the hydroxyl radical (OH) reaction with nitrogen dioxide during daytime. On a yearly mean basis, about 17% of the HNO3 plus NO3- formation results from the reaction of NO3 radicals with dimethylsulfide of marine origin. This shows important interactions between biogenic and anthropogenic compounds contributing to nutrient deposition to the sea.

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