Browsing Chang, Rachel Y.W. by Author "Leaitch, W. R."

Now showing items 1-5 of 5

  • Aerosol composition and sources in the central Arctic Ocean during ASCOS 

    Chang, R. Y. -W, C. Leck, M. Graus, M. Mueller, et al. 2011. "Aerosol composition and sources in the central Arctic Ocean during ASCOS." Atmospheric Chemistry and Physics 11(20): 10619-10636.
    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., C. Stroud, J. W. Bottenheim, P. C. Brickell, et al. 2010. "Characterization of a large biogenic secondary organic aerosol event from eastern Canadian forests." Atmospheric Chemistry and Physics 10(6): 2825-2845.
    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., R. Y. -W Chang, W. R. Leaitch, S. -M Li, et al. 2006. "Closure between measured and modeled cloud condensation nuclei (CCN) using size-resolved aerosol compositions in downtown Toronto." Atmospheric Chemistry and Physics 6: 2513-2524.
    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 ...

  • 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, J. G. Slowik, N. C. Shantz, A. Vlasenko, et al. 2010. "The hygroscopicity parameter (kappa) of ambient organic aerosol at a field site subject to biogenic and anthropogenic influences: relationship to degree of aerosol oxidation." Atmospheric Chemistry and Physics 10(11): 5047-5064.
    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 ...

  • Slower CCN growth kinetics of anthropogenic aerosol compared to biogenic aerosol observed at a rural site 

    Shantz, N. C., R. Y. -W Chang, J. G. Slowik, A. Vlasenko, et al. 2010. "Slower CCN growth kinetics of anthropogenic aerosol compared to biogenic aerosol observed at a rural site." Atmospheric Chemistry and Physics 10(1): 299-312.
    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 ...