Spatial and Temporal Patterns in Black Carbon Deposition to Dated Fennoscandian Arctic Lake Sediments from 1830 to 2010.

摘要: Black carbon (BC) is fine particulate matter produced by the incomplete combustion of biomass and fossil fuels. It has a strong climate warming effect that amplified in Arctic. Long-term trends BC play an important role assessing climatic effects model validation. However, few historical records exist from high latitudes. We present five lake-sediment soot-BC (SBC) Fennoscandian Arctic compare them with spheroidal carbonaceous fly-ash particles (SCPs), another component, for ca. last 120 years. The show spatial temporal variation SBC fluxes. Two northernmost lakes indicate declining values 1960 to present, which consistent modeled deposition atmospheric measurements area. two located closer Kola Peninsula (Russia) have recorded increasing fluxes 1970 likely caused regional industrial emissions. trend agreement Svalbard ice-core-BC record. results suggest parts European may increased over decades, further studies are needed clarify extent ascertain implications.