Publications by authors named "Marta A Fenn"
Aerosol mass extinction efficiency (MEE) is a key aerosol property used to connect aerosol optical properties with aerosol mass concentrations. Using measurements of smoke obtained during the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) campaign we find that mid-visible smoke MEE can change by a factor of 2-3 between fresh smoke (<2 hr old) and one-day-old smoke. While increases in aerosol size partially explain this trend, changes in the real part of the aerosol refractive index (real(n)) are necessary to provide closure assuming Mie theory.
View Article and Find Full Text PDFBiomass burning (BB) aerosol events were characterized over the U.S. East Coast and Bermuda over the western North Atlantic Ocean (WNAO) between 2005 and 2018 using a combination of ground-based observations, satellite data, and model outputs.
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- The Korea - United States Air Quality Study (2016) investigated the sources of high ozone and aerosol levels in South Korea through aircraft and ground measurements focused on particulate matter (PM) smaller than 2.5 micrometers.
- The study analyzed PM data to understand conditions leading to air quality standard violations, especially in the Seoul area, and examined the interaction between meteorological factors and aerosol concentrations.
- It identified two key meteorological periods influencing PM levels: stagnant clear conditions, which boosted local aerosol production, and cloudy, humid conditions that accelerated aerosol production from both local and transported emissions, suggesting the need for more continuous monitoring to better understand these dynamics.