Observations of Aerosol Particles and Cloud in the Summertime Arctic near Resolute Bay, Nunavut, Canada (Invited Presentation)

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Thursday, 8 January 2015: 3:30 PM
223 (Phoenix Convention Center - West and North Buildings)
Richard Leaitch, EC, Toronto, ON, Canada; and J. Burkart, M. Willis, J. Abbatt, F. Koellner, J. Schneider, H. Bozem, C. Konrad, A. Herber, and A. Korolev

Airborne measurements of the atmospheric aerosol and low-level clouds were conducted from Resolute Bay, Nunavut, Canada during July 3-23, 2014 as part of the Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments (NETCARE). Eleven research flights were conducted from the Alfred Wegener Institute POLAR 6 DC-3 aircraft. The measurements included particle size distributions from 4 nm to 1 Ám, cloud condensation nuclei concentrations at 0.8% water supersaturation, particle chemistry from two different mass spectrometers as well as cloud microphysics. The flights were conducted over ice, water and melt ponds that frequently contributed to the low cloud and potentially to new particle production. In addition to considering the impacts of the aerosol particles on the low clouds, we also look at the role of the low clouds in cleansing the near-surface aerosol that may in turn contribute to new particle formation.>