Search Results - "Leaitch, W R"

Contribution of Arctic seabird-colony ammonia to atmospheric particles and cloud-albedo radiative effect by Croft, B., Wentworth, G. R., Martin, R. V., Leaitch, W. R., Murphy, J. G., Murphy, B. N., Kodros, J. K., Abbatt, J. P. D., Pierce, J. R.

“…The Arctic region is vulnerable to climate change and able to affect global climate. The summertime Arctic atmosphere is pristine and strongly influenced by…”
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Organic condensation: a vital link connecting aerosol formation to cloud condensation nuclei (CCN) concentrations by Riipinen, I., Pierce, J. R., Yli-Juuti, T., Nieminen, T., Häkkinen, S., Ehn, M., Junninen, H., Lehtipalo, K., Petäjä, T., Slowik, J., Chang, R., Shantz, N. C., Abbatt, J., Leaitch, W. R., Kerminen, V.-M., Worsnop, D. R., Pandis, S. N., Donahue, N. M., Kulmala, M.

“…Atmospheric aerosol particles influence global climate as well as impair air quality through their effects on atmospheric visibility and human health…”
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Atmospheric mercury speciation and mercury in snow over time at Alert, Canada by Steffen, A, Bottenheim, J, Cole, A, Ebinghaus, R, Lawson, G, Leaitch, W. R

“…Ten years of atmospheric mercury speciation data and 14 years of mercury in snow data from Alert, Nunavut, Canada, are examined. The speciation data, collected…”
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Characterization of aerosol and cloud water at a mountain site during WACS 2010: secondary organic aerosol formation through oxidative cloud processing by Lee, A. K. Y, Hayden, K. L, Herckes, P, Leaitch, W. R, Liggio, J, Macdonald, A. M, Abbatt, J. P. D

“…The water-soluble fractions of aerosol filter samples and cloud water collected during the Whistler Aerosol and Cloud Study (WACS 2010) were analyzed using an…”
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Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe by Mason, R. H, Si, M, Chou, C, Irish, V. E, Dickie, R, Elizondo, P, Wong, R, Brintnell, M, Elsasser, M, Lassar, W. M, Pierce, K. M, Leaitch, W. R, MacDonald, A. M, Platt, A, Toom-Sauntry, D, Sarda-Estève, R, Schiller, C. L, Suski, K. J, Hill, T. C. J, Abbatt, J. P. D, Huffman, J. A, DeMott, P. J, Bertram, A. K

“…Detailed information on the size of ice-nucleating particles (INPs) may be useful in source identification, modeling their transport in the atmosphere to…”
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Influence of transport and ocean ice extent on biogenic aerosol sulfur in the Arctic atmosphere by Sharma, S., Chan, E., Ishizawa, M., Toom-Sauntry, D., Gong, S. L., Li, S. M., Tarasick, D. W., Leaitch, W. R., Norman, A., Quinn, P. K., Bates, T. S., Levasseur, M., Barrie, L. A., Maenhaut, W.

“…The recent decline in sea ice cover in the Arctic Ocean could affect the regional radiative forcing via changes in sea ice–atmosphere exchange of dimethyl…”
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The hygroscopicity parameter (κ) of ambient organic aerosol at a field site subject to biogenic and anthropogenic influences: relationship to degree of aerosol oxidation by Chang, R. Y.-W., Slowik, J. G., Shantz, N. C., Vlasenko, A., Liggio, J., Sjostedt, S. J., Leaitch, W. R., Abbatt, J. P. D.

“…Cloud condensation nuclei (CCN) concentrations were measured at Egbert, a rural site in Ontario, Canada during the spring of 2007. The CCN concentrations were…”
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Primary marine aerosol-cloud interactions off the coast of California by Modini, R. L., Frossard, A. A., Ahlm, L., Russell, L. M., Corrigan, C. E., Roberts, G. C., Hawkins, L. N., Schroder, J. C., Bertram, A. K., Zhao, R., Lee, A. K. Y., Abbatt, J. P. D., Lin, J., Nenes, A., Wang, Z., Wonaschütz, A., Sorooshian, A., Noone, K. J., Jonsson, H., Seinfeld, J. H., Toom-Sauntry, D., Macdonald, A. M., Leaitch, W. R.

“…Primary marine aerosol (PMA)‐cloud interactions off the coast of California were investigated using observations of marine aerosol, cloud condensation nuclei…”
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Aqueous OH oxidation of ambient organic aerosol and cloud water organics: Formation of highly oxidized products by Lee, Alex K. Y., Herckes, P., Leaitch, W. R., Macdonald, A. M., Abbatt, J. P. D.

“…Aqueous chemistry can play a vital role in secondary organic aerosol (SOA) formation and aging. A novel analytical approach that allows for simultaneous…”
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Ice nucleating particles at a coastal marine boundary layer site: correlations with aerosol type and meteorological conditions by Mason, R. H., Si, M., Li, J., Chou, C., Dickie, R., Toom-Sauntry, D., Pöhlker, C., Yakobi-Hancock, J. D., Ladino, L. A., Jones, K., Leaitch, W. R., Schiller, C. L., Abbatt, J. P. D., Huffman, J. A., Bertram, A. K.

“…Information on what aerosol particle types are the major sources of ice nucleating particles (INPs) in the atmosphere is needed for climate predictions. To…”
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Spring and summer contrast in new particle formation over nine forest areas in North America by Yu, F, Luo, G, Pryor, S. C, Pillai, P. R, Lee, S. H, Ortega, J, Schwab, J. J, Hallar, A. G, Leaitch, W. R, Aneja, V. P, Smith, J. N, Walker, J. T, Hogrefe, O, Demerjian, K. L

“…Recent laboratory chamber studies indicate a significant role for highly oxidized low-volatility organics in new particle formation (NPF), but the actual role…”
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Dissolved organic carbon (DOC) and select aldehydes in cloud and fog water: the role of the aqueous phase in impacting trace gas budgets by Ervens, B, Wang, Y, Eagar, J, Leaitch, W. R, Macdonald, A. M, Valsaraj, K. T, Herckes, P

“…Cloud and fog droplets efficiently scavenge and process water-soluble compounds and, thus, modify the chemical composition of the gas and particle phases. The…”
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New-particle formation, growth and climate-relevant particle production in Egbert, Canada: analysis from 1 year of size-distribution observations by Pierce, J. R, Westervelt, D. M, Atwood, S. A, Barnes, E. A, Leaitch, W. R

“…Aerosol particle nucleation, or new-particle formation, is the dominant contributor to particle number in the atmosphere. However, these particles must grow…”
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Identification of trends and interannual variability of sulfate and black carbon in the Canadian High Arctic: 1981-2007 by Gong, S. L., Zhao, T. L., Sharma, S., Toom-Sauntry, D., Lavoué, D., Zhang, X. B., Leaitch, W. R., Barrie, L. A.

“…Trends and interannual variations of the Canadian High Arctic aerosol record at Alert, Canada (82.5°N), from 1981 to 2007 are investigated and attributed to…”
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Aerosol composition and sources in the central Arctic Ocean during ASCOS by Chang, R. Y.-W., Leck, C., Graus, M., Müller, M., Paatero, J., Burkhart, J. F., Stohl, A., Orr, L. H., Hayden, K., Li, S.-M., Hansel, A., Tjernström, M., Leaitch, W. R., Abbatt, J. P. D.

“…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…”
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Organic functional groups in aerosol particles from burning and non-burning forest emissions at a high-elevation mountain site by Takahama, S, Schwartz, R E, Russell, L M, Macdonald, A M, Sharma, S, Leaitch, W R

“…Ambient particles collected on teflon filters at the Peak of Whistler Mountain, British Columbia (2182 m a.s.l.) during spring and summer 2009 were measured by…”
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Nucleation and condensational growth to CCN sizes during a sustained pristine biogenic SOA event in a forested mountain valley by Pierce, J. R, Leaitch, W. R, Liggio, J, Westervelt, D. M, Wainwright, C. D, Abbatt, J. P. D, Ahlm, L, Al-Basheer, W, Cziczo, D. J, Hayden, K. L, Lee, A. K. Y, Li, S.-M, Russell, L. M, Sjostedt, S. J, Strawbridge, K. B, Travis, M, Vlasenko, A, Wentzell, J. J. B, Wiebe, H. A, Wong, J. P. S, Macdonald, A. M

“…The Whistler Aerosol and Cloud Study (WACS 2010), included intensive measurements of trace gases and particles at two sites on Whistler Mountain. Between 6–11…”
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Oxidation of ambient biogenic secondary organic aerosol by hydroxyl radicals: Effects on cloud condensation nuclei activity by Wong, J. P. S., Lee, A. K. Y., Slowik, J. G., Cziczo, D. J., Leaitch, W. R., Macdonald, A., Abbatt, J. P. D.

“…Changes in the hygroscopicity of ambient biogenic secondary organic aerosols (SOA) due to controlled OH oxidation were investigated at a remote forested site…”
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Characterization of a large biogenic secondary organic aerosol event from eastern Canadian forests by 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.

“…Measurements of aerosol composition, volatile organic compounds, and CO are used to determine biogenic secondary organic aerosol (SOA) concentrations at a…”
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Climatology of aerosol radiative properties in the free troposphere by Andrews, E., Ogren, J.A., Bonasoni, P., Marinoni, A., Cuevas, E., Rodríguez, S., Sun, J.Y., Jaffe, D.A., Fischer, E.V., Baltensperger, U., Weingartner, E., Coen, M. Collaud, Sharma, S., Macdonald, A.M., Leaitch, W.R., Lin, N.-H., Laj, P., Arsov, T., Kalapov, I., Jefferson, A., Sheridan, P.

“…High altitude mountaintop observatories provide the opportunity to study aerosol properties in the free troposphere without the added expense and difficulty of…”
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