William R Simpson, University of Alaska Fairbanks, Geophysical Institute and Department of Chemistry and Biochemistry, Fairbanks, AK, United States, Jingqiu Mao, University of Alaska Fairbanks, Chemistry and Biochemistry & Geophysical Institute, Fairbanks, AK, United States and William Swanson, University of Alaska Fairbanks, Fairbanks, AK, United States