Tianlang Zhao¹, Jingqiu Mao², Xiaoyi Zhao³, Debora Griffin³, Kimberly Strong⁴, William R Simpson⁵, Ramina Alwarda⁴, Martina M. Friedrich⁶, Martin Tiefengraber⁷, Manuel Gebetsberger5⁸, Alexander Cede⁸, Elena Spinei Lind⁹, Apoorva Pandey^9,10 and Thomas F Hanisco¹¹, (1)University of Alaska Fairbanks, Department of Chemistry and Biochemistry & Geophysical Institute, Fairbanks, AK, United States, (2)University of Alaska Fairbanks, Geophysical Institute and Department of Chemistry and Biochemistry, Fairbanks, United States, (3)Environment and Climate Change Canada, Air Quality Research Division, Toronto, ON, Canada, (4)University of Toronto, Department of Physics, Toronto, ON, Canada, (5)University of Alaska, Geophysical Institute and Department of Chemistry and Biochemistry, Fairbanks, United States, (6)Royal Belgian Institute for Space Aeronomy, Brussels, Belgium, (7)LuftBlick, Mutters, Austria, (8)LuftBlick, Innsbruck, Austria, (9)NASA Goddard Space Flight Center, Greenbelt, United States, (10)University of Maryland Baltimore County, Baltimore, United States, (11)NASA Goddard Space Flight Center, Greenbelt, MD, United States