Inderscience Publishers

Modelling the impact of sea-salt particles on the exceedances of daily PM10 air quality standards in the Netherlands

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Courtesy of Inderscience Publishers

Particles generated at the sea surface contribute to PM
10
levels in coastal areas. Current estimates suggest annual average contributions of up to 10 µg/m³ along the North Sea coast in the Netherlands. In this paper the generation of size-segregated sea salt particles is described as a function of meteorological parameters. These particles are fed into a model where transport and deposition processes are taken into account as a function of particle size and relative humidity. Modelled values are compared with daily measurements of Cl
concentrations in air (particles < 3.5 µm, 7 locations) and monthly averages of wet Na
+
deposition (particles < 100 µm, 14 locations). Results indicate a much lower impact on exceedances of the daily limit value than on annual average PM
10
values.

Keywords: sea salt particles, The Netherlands, modelling, PM10, air quality, air pollution, transport processes, deposition processes, particle size, relative humidity

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