Browsing by Author "Abbatt, J. P. D."
Now showing items 1-10 of 10
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Aerosol composition and sources in the central Arctic Ocean during ASCOS
Chang, R. Y. -W; Leck, C.; Graus, M.; Mueller, M.; Paatero, J.; Burkhart, J. F.; Stohl, A.; Orr, L. H.; Hayden, K.; Li, S. -M; Hansel, A.; Tjernstrom, M.; Leaitch, W. R.; Abbatt, J. P. D. (2011)Measurements of submicron aerosol chemical composition were made over the central Arctic Ocean from 5 August to 8 September 2008 as a part of the Arctic Summer Cloud Ocean Study (ASCOS) using an aerosol mass spectrometer ... -
Characterization of a large biogenic secondary organic aerosol event from eastern Canadian forests
Slowik, J. G.; Stroud, C.; Bottenheim, J. W.; Brickell, P. C.; Chang, R. Y. -W; Liggio, J.; Makar, P. A.; Martin, R. V.; Moran, M. D.; Shantz, N. C.; Sjostedt, S. J.; van Donkelaar, A.; Vlasenko, A.; Wiebe, H. A.; Xia, A. G.; Zhang, J.; Leaitch, W. R.; Abbatt, J. P. D. (2010)Measurements of aerosol composition, volatile organic compounds, and CO are used to determine biogenic secondary organic aerosol (SOA) concentrations at a rural site 70 km north of Toronto. These biogenic SOA levels ... -
Closure between measured and modeled cloud condensation nuclei (CCN) using size-resolved aerosol compositions in downtown Toronto
Broekhuizen, K.; Chang, R. Y. -W; Leaitch, W. R.; Li, S. -M; Abbatt, J. P. D. (2006-06)Measurements of cloud condensation nuclei (CCN) were made in downtown Toronto during August and September, 2003. CCN measurements were performed at 0.58% supersaturation using a thermal-gradient diffusion chamber, whereas ... -
Cloud condensation nuclei closure study on summer arctic aerosol
Martin, M.; Chang, R. Y-W; Sierau, B.; Sjogren, S.; Swietlicki, E.; Abbatt, J. P. D.; Leck, C.; Lohmann, U. (2011)We present an aerosol - cloud condensation nuclei (CCN) closure study on summer high Arctic aerosol based on measurements that were carried out in 2008 during the Arctic Summer Cloud Ocean Study (ASCOS) on board the ... -
Diurnally resolved particulate and VOC measurements at a rural site: indication of significant biogenic secondary organic aerosol formation
Sjostedt, S. J.; Slowik, J. G.; Brook, J. R.; Chang, R. Y. -W; Mihele, C.; Stroud, C. A.; Vlasenko, A.; Abbatt, J. P. D. (2011)We report simultaneous measurements of volatile organic compound (VOC) mixing ratios including C-6 to C-8 aromatics, isoprene, monoterpenes, acetone and organic aerosol mass loadings at a rural location in southwestern ... -
Elucidating determinants of aerosol composition through particle-type-based receptor modeling
McGuire, M. L.; Jeong, C. -H; Slowik, J. G.; Chang, R. Y. -W; Corbin, J. C.; Lu, G.; Mihele, C.; Rehbein, P. J. G.; Sills, D. M. L.; Abbatt, J. P. D.; Brook, J. R.; Evans, G. J. (2011)An aerosol time-of-flight mass spectrometer (ATOFMS) was deployed at a semi-rural site in southern Ontario to characterize the size and chemical composition of individual particles. Particle-type-based receptor modelling ... -
The hygroscopicity parameter (kappa) of ambient organic aerosol at a field site subject to biogenic and anthropogenic influences: relationship to degree of aerosol oxidation
Chang, R. Y-W; Slowik, J. G.; Shantz, N. C.; Vlasenko, A.; Liggio, J.; Sjostedt, S. J.; Leaitch, W. R.; Abbatt, J. P. D. (2010)Cloud condensation nuclei (CCN) concentrations were measured at Egbert, a rural site in Ontario, Canada during the spring of 2007. The CCN concentrations were compared to values predicted from the aerosol chemical ... -
Particle formation and growth at five rural and urban sites
Jeong, C-H; Evans, G. J.; McGuire, M. L.; Chang, R. Y-W; Abbatt, J. P. D.; Zeromskiene, K.; Mozurkewich, M.; Li, S. -M; Leaitch, Andw R. (2010)Ultrafine particle (UFP) number and size distributions were simultaneously measured at five urban and rural sites during the summer of 2007 in Ontario, Canada as part of the Border Air Quality and Meteorology Study ... -
Photochemical processing of organic aerosol at nearby continental sites: contrast between urban plumes and regional aerosol
Slowik, J. G.; Brook, J.; Chang, R. Y-W; Evans, G. J.; Hayden, K.; Jeong, C-H; Li, S-M; Liggio, J.; Liu, P. S. K.; McGuire, M.; Mihele, C.; Sjostedt, S.; Vlasenko, A.; Abbatt, J. P. D. (2011)As part of the BAQS-Met 2007 field campaign, Aerodyne time-of-flight aerosol mass spectrometers (ToF-AMS) were deployed at two sites in southwestern Ontario from 17 June to 11 July 2007. One instrument was located at ... -
Slower CCN growth kinetics of anthropogenic aerosol compared to biogenic aerosol observed at a rural site
Shantz, N. C.; Chang, R. Y. -W; Slowik, J. G.; Vlasenko, A.; Abbatt, J. P. D.; Leaitch, W. R. (2010)Growth rates of water droplets were measured with a static diffusion cloud condensation chamber in May-June 2007 at a rural field site in Southern Ontario, Canada, 70 km north of Toronto. The observations include periods ...