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Refractory black carbon aerosols (rBC) from biomass burning and fossil fuelcombustion are deposited to the Antarctic ice sheet and preserve a historyof emissions and long-range transport from low- and mid-latitudes. Antarctic ice corerBC records may thus provide information with respect to past combustionaerosol emissions and atmospheric circulation. Here, we present six EastAntarctic ice core records of rBC concentrations and fluxes covering thelast two centuries with approximately annual resolution (cal. yr. 1800 to2000). The ice cores were drilled in disparate regions of the high EastAntarctic ice sheet, at different elevations and net snow accumulationrates. Annual rBC concentrations were log-normally distributed and geometricmeans of annual concentrations ranged from 0.10 to 0.18 μg kg−1. AveragerBC fluxes were determined over the time periods 1800 to 2000 and 1963 to2000 and ranged from 3.4 to 15.5 μg m−2 a−1 and 3.6 to21.8 μg m−2 a−1, respectively. Geometric mean concentrations spanning 1800 to2000 increased linearly with elevation at a rate of 0.025 μg kg−1/500 m.Spectral analysis of the records revealed significant decadal-scalevariability, which at several sites was comparable to decadal ENSOvariability

Variability of black carbon deposition to the East Antarctic Plateau, 1800–2000 AD