Black carbon and inorganic aerosols in Arctic snowpack from six regions (Finland, Alaska, North and South Siberia, Greenland, and Spitzbergen) during early spring in 2012-2016.

These data sets contain the mass and number concentrations, size distributions, deposition amount by mass and number of black carbon (BC) in snowpack sampled over Finland, Alaska, Siberia, Greenland, and Spitsbergen during early spring in 2012-2016. They also contain the mass concentrations and deposition amounts of inorganic ion species (nss-SO42-, NO3-, Na+, and NH4+) in the same snowpack. In total, we provide the data for 107 samples of surface snow (0-2 cm or 0-5 cm depth), 77 samples of subsurface snow (2-10 cm), and 112 columns of snowpack. The measurements of BC and ion species were made by using a single-particle soot photometer and ion chromatography, respectively.