Terpene Composition Complexity Controls Secondary Organic Aerosol Yields from Scots Pine Volatile Emissions

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http://hdl.handle.net/10138/233183

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Faiola , C L , Buchholz , A , Kari , E , Yli-Pirila , P , Holopainen , J K , Kivimäenpää , M , Miettinen , P , Worsnop , D R , Lehtinen , K E J , Guenther , A B & Virtanen , A 2018 , ' Terpene Composition Complexity Controls Secondary Organic Aerosol Yields from Scots Pine Volatile Emissions ' , Scientific Reports , vol. 8 , 3053 . https://doi.org/10.1038/s41598-018-21045-1

Title: Terpene Composition Complexity Controls Secondary Organic Aerosol Yields from Scots Pine Volatile Emissions
Author: Faiola, C. L.; Buchholz, A.; Kari, E.; Yli-Pirila, P.; Holopainen, J. K.; Kivimäenpää, M.; Miettinen, P.; Worsnop, D. R.; Lehtinen, K. E. J.; Guenther, A. B.; Virtanen, A.
Contributor organization: Department of Physics
Polar and arctic atmospheric research (PANDA)
Date: 2018-02-14
Language: eng
Number of pages: 13
Belongs to series: Scientific Reports
ISSN: 2045-2322
DOI: https://doi.org/10.1038/s41598-018-21045-1
URI: http://hdl.handle.net/10138/233183
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.
Subject: NITROGEN AVAILABILITY
CHEMICAL-COMPOSITION
BIOGENIC EMISSIONS
ELEVATED OZONE
BIOTIC STRESS
BASIS-SET
DE-NOVO
HERBIVORY
FOREST
MODEL
114 Physical sciences
116 Chemical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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