A comprehensive global dataset of atmospheric 7Be and 210Pb measurements: air concentration and depositional flux

Naturally occurring beryllium-7 (7Be, T1/2: 53.3 days) and lead-210 (210Pb, T1/2:22.3 y) have been widely utilized as tracers to investigate Earth' surface and atmospheric processes. Here we present a global dataset of air concentration and depositional flux measurements of atmospheric 7Be and 210Pb made by a large number of researchers and laboratories. Data were collected from published papers between 1955 and early 2020. It includes the annual surface air concentrations data of 7Be from 367 sites and of 210Pb from 270 sites, the annual depositional flux of 7Be from 279 sites, and of 210Pb from 602 sites. When available, appropriate metadata have also been summarized, including geographic location, sampling date, methodology, annual precipitation, and references.  In addition, the ratios of 7Be to 210Pb and deposition velocities of aerosols calculated from 7Be and 210Pb data are also presented.