The Emission and Physicochemical Properties of Light-Absorbing Carbonaceous Particles at A Cold-Climate Site

Aerosols have drawn great scientific interests in the past decades dur to their essential roles in the nucleation of ice, clouds, radiation budget and climate change. Light-absorbing carbonaceous particles (LACs), including black carbon (BC) and brown carbon (BrC), are important radiatively-active aerosols in the atmosphere. In this research, we will present the emissions and physicochemical properties of BC and BrC particles. We will try to figure out the contribution of BC and BrC respectively, by combining results from instrument measurement (photoacoustic extinctiometer and aethalometer) and the analysis of aerosol samples collected on filters (UV/vis spectrometry and LC-TOF-MS). In the end, we would like to show the impacts of LACs in cold-climate sites, comparing with warm-climate sites.