The goal of this work is to provide estimates of the yearly atmospheric deposition flux of aerosol trace elements. These include those of biogeochemical importance as well as pollutant species. The seasonal evolution of 7Be partitioning within the various catchments will also provide insight into the seasonal distribution of atmospherically-derived species among these reservoirs. The work will involve measurements of 7Be inventories, 7Be aerosol activities, and aerosol concentrations of trace elements.
This work will be part of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) initiative. MOSAiC will entail year-round, coordinated and comprehensive measurements extending across the central Arctic atmosphere-sea-ice-ocean system to advance process-level understanding of the changing Arctic physical and biogeochemical systems. The significance for this work is that for the first time a study of the seasonal changes in Arctic aerosol and associated chemical flux will be possible.
