Ruppel, M.M.* et al. Organic compounds, radiocarbon, trace elements and atmospheric transport illuminating sources of elemental carbon in a 300-year svalbard ice core. J. Geophys. Res. Atmos. 128:e2022JD038378 (2023) Helin, A.* et al. Variation of absorption Ångström exponent in aerosols from different emission sources. J. Geophys. Res. Atmos. 126:e2020JD034094 (2021) Corbin, J.C.* et al. Brown and black carbon emitted by a marine engine operated on heavy fuel oil and distillate fuels: Optical properties, size distributions, emission factors. J. Geophys. Res. Atmos. 123, 6175-6195 (2018) Zotter, P.* et al. Diurnal cycle of fossil and nonfossil carbon using radiocarbon analyses during CalNex. J. Geophys. Res. Atmos. 119, 6818-6835 (2014)