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Secondary Organic Aerosol (SOA) Formation from Volatile Chemical Products (VCPs)
Citation:
Qin, M., B. Murphy, B. McDonald, S. McKeen, Q. Lu, A. Robinson, C. Efstathiou, C. Allen, M. Strum, J. Snyder, K. Dionisio, K. Isaacs, AND H. Pye. Secondary Organic Aerosol (SOA) Formation from Volatile Chemical Products (VCPs). 2019 International GEOS-Chem Meeting (IGC9), Boston, MA, May 06 - 09, 2019.
Impact/Purpose:
Improved predictions of secondary organic aerosols (SOA) are important to improving the understanding of exposure to particulate matter and its related health risks. Studies have shown that the emerging information about volatile chemical products is not well characterized in the models, yet this represents an important emissions sector. This work aims to determine whether VCP emissions could improve closure of the gaps in urban SOA and oxidant levels between observed and modeled values.
Description:
Volatile chemical products (VCP), including pesticides, coatings, printing ink, adhesives, cleaning agents and personal care products, have become the largest source of urban fossil organic emissions in the United States. However, recent studies suggest that VCP emissions are underestimated by a factor of 2-3 in local (California) and national emission inventories (NEI). It remains challenging to reproduce observed SOA levels with chemical transport models, particularly in urban plumes. This work aims to estimate how well VCP emissions could achieve model-observation closure of urban SOA, oxidant levels, etc.
