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Abstract
Arctic haze is the seasonal maximum of atmospheric aerosols in the Arctic that occurs every year in the late winter and early spring. Chemical components of Arctic haze include particulate matter from air pollution, dust, organic matter, and sea salt. Air pollution transported from lower latitudes dictates ice-albedo and cloud radiation feedbacks, which contribute to either accelerated or abated warming in the Arctic. Consequently, understanding the sources, transport, and composition of aerosols in the Arctic is imperative. Researchers at Barrow Atmospheric Baseline Observatory (BRW), now affiliated with The National Oceanic and Atmospheric Administration (NOAA), have been measuring atmospheric chemical composition at Utqiaġvik, Alaska since 1976. Large volumes of air are filtered through size-segregated filters at BRW over 1 to 5-day timescales for submicron particles (particle diameter<1μm) and one-week to one-month timescales for supermicron particles (1μm
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