Please use this identifier to cite or link to this item:
https://doi.org/10.5194/acp-16-6721-2016
DC Field | Value | |
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dc.title | Substantial secondary organic aerosol formation in a coniferous forest: Observations of both day- and nighttime chemistry | |
dc.contributor.author | Lee, A.K.Y | |
dc.contributor.author | Abbatt, J.P.D | |
dc.contributor.author | Leaitch, W.R | |
dc.contributor.author | Li, S.-M | |
dc.contributor.author | Sjostedt, S.J | |
dc.contributor.author | Wentzell, J.J.B | |
dc.contributor.author | Liggio, J | |
dc.contributor.author | Macdonald, A.M | |
dc.date.accessioned | 2020-11-10T07:56:17Z | |
dc.date.available | 2020-11-10T07:56:17Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Lee, A.K.Y, Abbatt, J.P.D, Leaitch, W.R, Li, S.-M, Sjostedt, S.J, Wentzell, J.J.B, Liggio, J, Macdonald, A.M (2016). Substantial secondary organic aerosol formation in a coniferous forest: Observations of both day- and nighttime chemistry. Atmospheric Chemistry and Physics 16 (11) : 6721-6733. ScholarBank@NUS Repository. https://doi.org/10.5194/acp-16-6721-2016 | |
dc.identifier.issn | 16807316 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/183329 | |
dc.description.abstract | Substantial biogenic secondary organic aerosol (BSOA) formation was investigated in a coniferous forest mountain region in Whistler, British Columbia. A largely biogenic aerosol growth episode was observed, providing a unique opportunity to investigate BSOA formation chemistry in a forested environment with limited influence from anthropogenic emissions. Positive matrix factorization of aerosol mass spectrometry (AMS) measurement identified two types of BSOA (BSOA-1 and BSOA-2), which were primarily generated by gas-phase oxidation of monoterpenes and perhaps sesquiterpenes. The temporal variations of BSOA-1 and BSOA-2 can be explained by gas-particle partitioning in response to ambient temperature and the relative importance of different oxidation mechanisms between day and night. While BSOA-1 arises from gas-phase ozonolysis and nitrate radical chemistry at night, BSOA-2 is likely less volatile than BSOA-1 and consists of products formed via gas-phase oxidation by OH radical and ozone during the day. Organic nitrates produced through nitrate radical chemistry can account for 22-33 % of BSOA-1 mass at night. The mass spectra of BSOA-1 and BSOA-2 have higher values of the mass fraction of m/z 91 (f91) compared to the background organic aerosol. Using f91 to evaluate BSOA formation pathways in this unpolluted, forested region, heterogeneous oxidation of BSOA-1 is a minor production pathway of BSOA-2. @ Author(s) 2016. | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.source | Unpaywall 20201031 | |
dc.subject | aerosol formation | |
dc.subject | atmospheric chemistry | |
dc.subject | coniferous forest | |
dc.subject | hydroxyl radical | |
dc.subject | mountain region | |
dc.subject | oxidation | |
dc.subject | ozone | |
dc.subject | temporal variation | |
dc.subject | British Columbia | |
dc.subject | Canada | |
dc.subject | Whistler | |
dc.type | Article | |
dc.contributor.department | CIVIL AND ENVIRONMENTAL ENGINEERING | |
dc.description.doi | 10.5194/acp-16-6721-2016 | |
dc.description.sourcetitle | Atmospheric Chemistry and Physics | |
dc.description.volume | 16 | |
dc.description.issue | 11 | |
dc.description.page | 6721-6733 | |
Appears in Collections: | Staff Publications Elements |
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