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Title:Ubiquity and dominance of oxygenated species in organic aerosols in anthropogenically-influenced Northern Hemisphere midlatitudes
Authors:Zhang, Q. (Author)
Jimenez, Jose L. (Author)
Canagaratna, M. R. (Author)
Allan, J. David (Author)
Coe, H. (Author)
Ulbrich, I. M. (Author)
Alfarra, M. R. (Author)
Takami, A. (Author)
Middlebrook, A. M. (Author)
Džepina, Katja (Author)
Files:This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Unknown ()
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Organic aerosol (OA) data acquired by the Aerosol Mass Spectrometer (AMS) in 37 field campaigns were deconvolved into hydrocarbon-like OA (HOA) and several types of oxygenated OA (OOA) components. HOA has been linked to primary combustion emissions (mainly from fossil fuel) and other primary sources such as meat cooking. OOA is ubiquitous in various atmospheric environments, on average accounting for 64%, 83% and 95% of the total OA in urban, urban downwind, and rural/remote sites, respectively. A case study analysis of a rural site shows that the OOA concentration is much greater than the advected HOA, indicating that HOA oxidation is not an important source of OOA, and that OOA increases are mainly due to SOA. Most global models lack an explicit representation of SOA which may lead to significant biases in the magnitude, spatial and temporal distributions of OA, and in aerosol hygroscopic properties.
Keywords:atmospheric aerosol, secondary organic aerosols, primary organic aerosols, aerodyne aerosol mass spectrometer
Year of publishing:2007
Number of pages:str. 1-6
Numbering:iss. 13, Vol. 34
COBISS_ID:59052547 Link is opened in a new window
UDC:54
ISSN on article:0094-8276
URN:URN:SI:UNG:REP:XWS1YE2P
DOI:10.1029/2007GL029979 Link is opened in a new window
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Record is a part of a journal

Title:Geophysical research letters
Shortened title:Geophys. res. lett.
Publisher:American Geophysical Union.
ISSN:0094-8276
COBISS.SI-ID:16168965 New window

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