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Corresponding authors
a
Department of Chemistry and Biochemistry, California State University Northridge, Northridge, California, USA
E-mail:
mads@sulbaek.dk
b
Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
c
Center for Sustainable Systems, School for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan, USA
d
Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
e
National Center for Atmospheric Research, Boulder, Colorado, USA
f
Department of Environment and Geography, University of Manitoba, Winnipeg, Manitoba, Canada
g
School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada