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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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Graydon Snider on behalf of the Authors (20 May 2016)  Author's response    Manuscript
ED: Reconsider after minor revisions (Editor review) (10 Jun 2016) by Willy Maenhaut
AR by Graydon Snider on behalf of the Authors (14 Jun 2016)  Author's response    Manuscript
ED: Publish as is (01 Jul 2016) by Willy Maenhaut
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Short summary
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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