Source Contributions to Wintertime Elemental and Organic Carbon in the Western Arctic Based on Radiocarbon and Tracer Apportionment.
作者： T. E. Barrett , E. M. Robinson , S. Usenko , R. J. Sheesley
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摘要: To quantify the contributions of fossil and biomass sources to wintertime Arctic aerosol burden source apportionment is reported for elemental (EC) organic carbon (OC) fractions six PM10 samples collected during a (2012–2013) campaign in Barrow, AK. Radiocarbon EC indicates that contribute an average 68 ± 9% (0.01–0.07 μg m–3) midwinter decreasing 49 6% (0.02 late winter. The mean contribution OC was stable at 38 8% (0.04–0.32 m–3). Samples were also analyzed tracers, including levoglucosan, use chemical mass balance (CMB) model. CMB model able apportion 24–53% 99% burdens, respectively, campaign, with ranging from 25 74% (0.02–0.09 73 94% (0.03–0.07 Back trajectories identified two major regions B...
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