Articles | Volume 16, issue 15
Atmos. Chem. Phys., 16, 9629–9653, 2016
https://doi.org/10.5194/acp-16-9629-2016
Atmos. Chem. Phys., 16, 9629–9653, 2016
https://doi.org/10.5194/acp-16-9629-2016

Research article 02 Aug 2016

Research article | 02 Aug 2016

Variation in global chemical composition of PM2.5: emerging results from SPARTAN

Graydon Snider et al.

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We examine the chemical composition of fine particulate matter (PM2.5) collected on filters at traditionally undersampled, globally dispersed urban locations. Several PM2.5 chemical components (e.g. ammonium sulfate, ammonium nitrate, and black carbon) vary by more than an order of magnitude between sites while aerosol hygroscopicity varies by a factor of 2. Enhanced anthropogenic dust fractions in large urban areas are apparent from high Zn : Al ratios.
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