Abstract View
Characterization of Black Carbon Aerosol and Its Impacts on Aerosol-Cloud Interactions in the Marine Environment
NILIMA SARWAR, Armin Sorooshian, Haflidi Jonsson, Richard Flagan, John Seinfeld, Andrew Metcalf, Clemson University
Abstract Number: 482
Working Group: Aerosols, Clouds and Climate
Abstract
Ambient data on atmospheric black carbon (BC) aerosol was collected near Monterey, California in an aircraft-based field campaign named the Marine Aerosol Cloud and Wildfire Study (MACAWS) in June and July of 2018. A Single-Particle Soot Photometer (SP2) was used to measure BC aerosol and its mixing state. During the collaborative field project, data were collected on BC and other aerosol particles from different types of sources, including emissions from open biomass burning, marine combustion engines, on-road diesel engines, and aerosol from long-range transport. Recent studies have found that despite the various sources of BC aerosol, the marine environment is affected both directly and indirectly by the BC particles.
In this talk, the mass concentration, size distribution, and mixing state of BC aerosol particles are used to evaluate the differences between BC emitted from marine activities and BC emitted from wildfires. The influence of BC aerosol on the formation and properties of the marine boundary layer are assessed as a function of their emission sources from both nearby and far-off sources. The 2018 MACAWS dataset includes a comprehensive characterization of aerosol and cloud properties as measured in situ by aircraft, and this study will characterize the aerosol-cloud interactions and evaluate its impacts on the marine atmosphere.