Lead-201 as a tracer for atmospheric transport processes at the high Artic

High-volume aerosol particle samples have been collected onto glass-fibre filters at Mt. Zeppelin Global Atmosphere Watch station, Ny-Ålesund, Svalbard since December 2000. The filters have been assayed for 210Pb by measuring the alpha particles of its in-grown daughter nuclide 210Po. The data obtained can be used as a tracer to help to identify the variations in the transport behaviour of air masses and thus also air pollutants in the Arctic region.