Becky Alexander’s group is participating in the Alaskan Pollution And Chemical Analysis (ALPACA) field campaign in Fairbanks, AK in January – February 2022. The city of Fairbanks, AK regularly exceeds the EPA air quality standard for particulate matter during winter. The Alexander group is collecting particulate matter samples this winter, which will be measured for the isotopic composition of sulfate, an important component of the particulate matter. The sulfur isotopes, combined with complementary measurements by other groups, will discern the mechanisms of sulfate formation locally, which in turn can be used to inform effective air quality mitigation strategies in a cold and dark environment.

More information on the project can be found on the University of Alaska’s website.

Graduate student Alli Moon in Fairbanks

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