| Title: | Terpene Composition Complexity Controls Secondary Organic Aerosol Yields from Scots Pine Volatile Emissions |
| Author(s): | Faiola CL; Buchholz A; Kari E; Yli-Pirila P; Holopainen JK; Kivimaenpaa M; Miettinen P; Worsnop DR; Lehtinen KEJ; Guenther AB; Virtanen A; |
| Address: | "Department of Applied Physics, University of Eastern Finland, P.O. Box 1626, 70211, Kuopio, Finland. cfaiola@uci.edu. Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, CA, 92697-2525, United States. cfaiola@uci.edu. Department of Applied Physics, University of Eastern Finland, P.O. Box 1626, 70211, Kuopio, Finland. Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland. Aerodyne Research Inc., Billerica, Massachusetts, 08121-3976, United States. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland. Finnish Meteorological Institute, Kuopio, PO Box 1627, 70211, Kuopio, Finland. Department of Earth System Science, University of California, Irvine, CA, 92697-3100, United States" |
| DOI: | 10.1038/s41598-018-21045-1 |
| ISSN/ISBN: | 2045-2322 (Electronic) 2045-2322 (Linking) |
| Abstract: | "Secondary organic aerosol (SOA) impact climate by scattering and absorbing radiation and contributing to cloud formation. SOA models are based on studies of simplified chemical systems that do not account for the chemical complexity in the atmosphere. This study investigated SOA formation from a mixture of real Scots pine (Pinus sylvestris) emissions including a variety of monoterpenes and sesquiterpenes. SOA generation was characterized from different combinations of volatile compounds as the plant emissions were altered with an herbivore stress treatment. During active herbivore feeding, monoterpene and sesquiterpene emissions increased, but SOA mass yields decreased after accounting for absorption effects. SOA mass yields were controlled by sesquiterpene emissions in healthy plants. In contrast, SOA mass yields from stressed plant emissions were controlled by the specific blend of monoterpene emissions. Conservative estimates using a box model approach showed a 1.5- to 2.3-fold aerosol enhancement when the terpene complexity was taken into account. This enhancement was relative to the commonly used model monoterpene, 'alpha-pinene'. These results suggest that simplifying terpene complexity in SOA models could lead to underpredictions in aerosol mass loading" |
| Keywords: | Aerosols/analysis Air Pollutants/analysis Atmosphere Climate Monoterpenes/analysis/chemistry Ozone/chemistry Pinus/chemistry/metabolism Pinus sylvestris/*chemistry/*metabolism Sesquiterpenes/analysis/chemistry Terpenes/*chemistry Volatile Organic Compound; |
| Notes: | "MedlineFaiola, C L Buchholz, A Kari, E Yli-Pirila, P Holopainen, J K Kivimaenpaa, M Miettinen, P Worsnop, D R Lehtinen, K E J Guenther, A B Virtanen, A eng Research Support, Non-U.S. Gov't England 2018/02/16 Sci Rep. 2018 Feb 14; 8(1):3053. doi: 10.1038/s41598-018-21045-1" |
