Browsing by Author "Chang, R. Y. -W"
Now showing items 1-7 of 7
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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 ... -
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 ... -
The effect of meteorological and chemical factors on the agreement between observations and predictions of fine aerosol composition in southwestern Ontario during BAQS-Met
Markovic, M. Z.; Hayden, K. L.; Murphy, J. G.; Makar, P. A.; Ellis, R. A.; Chang, R. Y. -W; Slowik, J. G.; Mihele, C.; Brook, J. (2011)The Border Air Quality and Meteorology Study (BAQS-Met) was an intensive, collaborative field campaign during the summer of 2007 that investigated the effects of transboundary pollution, local pollution, and local ... -
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 ... -
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 ...