Mass concentration of BC(black carbon) measurment by COSMOS at Poker Flat Research Range (PFRR), Alaska, USA

Long-term (since 2016) observations of atmospheric black carbon (BC) mass concentrations were performed using a continuous soot-monitoring system (COSMOS) at Poker Flat Research Range (PFRR), Alaska, USA. We aim to evaluate atmospheric chemical transport models and chemistry-climate models used for IPCC assessment reports and to provide information on wet removal rate constraints and the emission strengths of important sources (nearby boreal forest fires and Asia, after long-range transport).