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Cited by 213

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Global Chemical Composition of Ambient Fine Particulate Matter for Exposure Assessment

Open access
Philip, Sajeev, Martin, Randall V., van Donkelaar, Aaron, Lo, Jason Wai-Ho, Wang, Yuxuan, Chen, Dan, Zhang, Lin, Kasibhatla, Prasad S., Wang, Siwen, Zhang, Qiang, Lu, Zifeng, Streets, David G., Bittman, Shabtai, Macdonald, Douglas J.·2014·Environmental Science & Technology

Abstract

Epidemiologic and health impact studies are inhibited by the paucity of global, long-term measurements of the chemical composition of fine particulate matter. We inferred PM2.5 chemical composition at 0.1° × 0.1° spatial resolution for 2004-2008 by combining aerosol optical depth retrieved from the MODIS and MISR satellite instruments, with coincident profile and composition information from the GEOS-Chem global chemical transport model. Evaluation of the satellite-model PM2.5 composition data set with North American in situ measurements indicated significant spatial agreement for secondary inorganic aerosol, particulate organic mass, black carbon, mineral dust, and sea salt. We found that global population-weighted PM2.5 concentrations were dominated by particulate organic mass (11.9 ± 7.3 μg/m(3)), secondary inorganic aerosol (11.1 ± 5.0 μg/m(3)), and mineral dust (11.1 ± 7.9 μg/m(3)). Secondary inorganic PM2.5 concentrations exceeded 30 μg/m(3) over East China. Sensitivity simulations suggested that population-weighted ambient PM2.5 from biofuel burning (11 μg/m(3)) could be almost as large as from fossil fuel combustion sources (17 μg/m(3)). These estimates offer information about global population exposure to the chemical components and sources of PM2.5.

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Authors
Philip, S., Martin, R. V., van Donkelaar, A., Lo, J. W.-H., Wang, Y., Chen, D., Zhang, L., Kasibhatla, P. S., Wang, S., Zhang, Q., Lu, Z., Streets, D. G., Bittman, S., & Macdonald, D. J.
Venue
Environmental Science & Technology
Published
2014-11-06
Volume
48
Issue
22
Pages
13060-13068
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W1966427227
Cited by
213
References
0
FWCI
8.83
Type
journal article
Language
en
Open access
hybrid

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