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Influence of the changing Arctic surface on snow, aerosol, and gas chemistry

Abstract

Rapid transformation and loss of sea ice due to climate change is already causing observable changes in the Arctic region.  Due to feedbacks between the Arctic Ocean surface and the atmosphere, there is an urgent need to characterize the unique atmospheric chemistry due to interactions at the frozen snow-covered sea ice surface. This presentation will discuss aerosol and trace gas measurements investigating sea spray aerosol production from open sea ice leads, resulting snow chemistry, and trace halogen gas production. In addition, the impacts of increasing oil and gas development on atmospheric composition in the Arctic region will be discussed. These results stem from several field studies conducted in the Alaskan Arctic.