• 14:00 Pollution impacts in the Arctic atmosphere during the International Polar Year (IPY) experiment ARCTAS
  Presenter: Hanwant Singh
• 14:30 Pollutant plume processing during long-range transport to the Arctic
  Presenter: KS Law
• 14:45 Background Tropospheric Composition and Impact of Pollutants' Transport over Central and Northern Siberia from Intensive Airborne Campaigns
  Presenter: J.-D. Paris
• 15:00 Impact of Biomass Burning and Anthropogenic Emissions on the Chemical Composition of the summertime Arctic Troposphere - Aircraft Observations during POLARCAT-GRACE
  Presenter: A. Roiger
• 15:15 Long-term trends of short-lived pollutants in the Arctic, their source regions and emissions.
  Presenter: D. Hirdman
• 15:30 GEM measurements during 8 years at Zeppelin, Ny-Ålesund and its relation to climate.
  Presenter: Torunn Berg
• 15:45 Comparison study of stratospheric volcanic aerosol layers in 2008 and 2009 detected by means of LIDAR in the Arctic
  Presenter: A Hoffmann