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Monoterpenes are the largest source of summertime organic aerosol in the southeastern United States

Proceedings of the National Academy of Sciences - PNAS, 2018-02, Vol.115 (9), p.2038-2043 [Peer Reviewed Journal]

Volumes 1–89 and 106–114, copyright as a collective work only; author(s) retains copyright to individual articles ;Copyright National Academy of Sciences Feb 27, 2018 ;2018 ;ISSN: 0027-8424 ;ISSN: 1091-6490 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.1717513115 ;PMID: 29440409

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Title:
Monoterpenes are the largest source of summertime organic aerosol in the southeastern United States
Author: Zhang, Haofei ; Yee, Lindsay D. ; Lee, Ben H. ; Curtis, Michael P. ; Worton, David R. ; Isaacman-VanWertz, Gabriel ; Offenberg, John H. ; Lewandowski, Michael ; Kleindienst, Tadeusz E. ; Beaver, Melinda R. ; Holder, Amara L. ; Lonneman, William A. ; Docherty, Kenneth S. ; Jaoui, Mohammed ; Pye, Havala O. T. ; Hu, Weiwei ; Day, Douglas A. ; Campuzano-Jost, Pedro ; Jimenez, Jose L. ; Guo, Hongyu ; Weber, Rodney J. ; de Gouw, Joost ; Koss, Abigail R. ; Edgerton, Eric S. ; Brune, William ; Mohr, Claudia ; Lopez-Hilfiker, Felipe D. ; Lutz, Anna ; Kreisberg, Nathan M. ; Spielman, Steve R. ; Hering, Susanne V. ; Wilson, Kevin R. ; Thornton, Joel A. ; Goldstein, Allen H.
Subjects: Aerosol source apportionment ; Aerosols ; Analytical Chemistry ; Analytisk kemi ; Anthropogenic factors ; Biogenic volatile organic compound oxidation ; Chemical pollution ; Chemical Sciences ; Climate change ; Climate Research ; Earth and Related Environmental Sciences ; Emissions ; Environmental impact ; ENVIRONMENTAL SCIENCES ; Fysikalisk kemi ; Geovetenskap och miljövetenskap ; Human influences ; Kemi ; Klimatforskning ; Miljövetenskap ; Monoterpenes ; Nitric oxide ; Nitrogen oxides ; Organic chemicals ; Origins ; Oxidation ; Oxides ; Photochemicals ; Physical Chemistry ; Physical Sciences ; Studies
Is Part Of: Proceedings of the National Academy of Sciences - PNAS, 2018-02, Vol.115 (9), p.2038-2043
Description: The chemical complexity of atmospheric organic aerosol (OA) has caused substantial uncertainties in understanding its origins and environmental impacts. Here, we provide constraints on OA origins through compositional characterization with molecular-level details. Our results suggest that secondary OA (SOA) from monoterpene oxidation accounts for approximately half of summertime fine OA in Centreville, AL, a forested area in the southeastern United States influenced by anthropogenic pollution. We find that different chemical processes involving nitrogen oxides, during days and nights, play a central role in determining the mass of monoterpene SOA produced. These findings elucidate the strong anthropogenic–biogenic interaction affecting ambient aerosol in the southeastern United States and point out the importance of reducing anthropogenic emissions, especially under a changing climate, where biogenic emissions will likely keep increasing.
Publisher: United States: National Academy of Sciences
Language: English
Identifier: ISSN: 0027-8424
ISSN: 1091-6490
EISSN: 1091-6490
DOI: 10.1073/pnas.1717513115
PMID: 29440409
Source: PubMed Central (Open access)
Geneva Foundation Free Medical Journals at publisher websites

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Monoterpenes are the largest source of summertime organic aerosol in the southeastern United States

Volumes 1–89 and 106–114, copyright as a collective work only; author(s) retains copyright to individual articles ;Copyright National Academy of Sciences Feb 27, 2018 ;2018 ;ISSN: 0027-8424 ;ISSN: 1091-6490 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.1717513115 ;PMID: 29440409

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