Ice core records of monoterpene- and isoprene-SOA tracers from Aurora Peak in Alaska since 1660s: Implication for climate change variability in the North Pacific Rim

Pokhrel, Ambarish; Kawamura, Kimitaka; Ono, Kaori; Seki, Osamu; Fu, Pingqing; Matoba, Sumio; Shiraiwa, Takayuki

Ice core records of monoterpene- and isoprene-SOA tracers from Aurora Peak in Alaska since 1660s: Implication for climate change variability in the North Pacific Rim

Pokhrel, Ambarish; Kawamura, Kimitaka; Ono, Kaori et al.

Atmospheric environment, 2015, 130, 105-112

Permalink : https://hdl.handle.net/2115/67195

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アクセス権	open access
URI	https://hdl.handle.net/2115/67195
タイトル	Ice core records of monoterpene- and isoprene-SOA tracers from Aurora Peak in Alaska since 1660s: Implication for climate change variability in the North Pacific Rim
著者	Pokhrel, Ambarish ; Kawamura, Kimitaka ; Ono, Kaori ; Seki, Osamu ; Fu, Pingqing ; Matoba, Sumio ; Shiraiwa, Takayuki
著者名 Pokhrel, Ambarish
著者名 Kawamura, Kimitaka
著者名 Ono, Kaori
著者名 Seki, Osamu
著者名 Fu, Pingqing
著者名 Matoba, Sumio
著者名 Shiraiwa, Takayuki
言語	英語
キーワード	Monoterpenes
	Isoprene
	SOA tracers
	Ice core
	Alaska
	Multi-decadal climate oscillation
	Climate change
発行日	2015-09-28
出版者	Elsevier
収録物名	Atmospheric environment
巻(号)	130
ページ	105-112
抄録	Monoterpene and isoprene secondary organic aerosol (SOA) tracers are reported for the first time in an Alaskan ice core to better understand the biological source strength before and after the industrial revolution in the Northern Hemisphere. We found significantly high concentrations of monoterpene- and isoprene-SOA tracers (e.g., pinic, pinonic, and 2-methylglyceric acids, 2-methylthreitol and 2-methylerythritol) in the ice core, which show historical trends with good correlation to each other since 1660s. They show positive correlations with sugar compounds (e.g., mannitol, fructose, glucose, inositol and sucrose), and anti-correlations with alpha-dicarbonyls (glyoxal and methylglyoxal) and fatty acids (e.g., C-18:1) in the same ice core. These results suggest similar sources and transport pathways for monoterpene- and isoprene-SOA tracers. In addition, we found that concentrations of C-5-alkene triols (e.g., 3-methyl-2,3,4-trihydroxy-1-butene, cis-2-methyl 1,3,4-trihydroxy-1-butene and trans-2-methyl-1,3,4-trihydroxy-1-butene) in the ice core have increased after the Great Pacific Climate Shift (late 1970s). They show positive correlations with a-dicarbonyls and fatty acids (e.g., C-18:1) in the ice core, suggesting that enhanced oceanic emissions of biogenic organic compounds through the marine boundary layer are recorded in the ice core from Alaska. Photochemical oxidation process for these monoterpene- and isoprene-/sesquiterpene-SOA tracers are suggested to be linked with the periodicity of multi-decadal climate oscillations and retreat of sea ice in the Northern Hemisphere. (C) 2015 Elsevier Ltd. All rights reserved.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	1352-2310
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.atmosenv.2015.09.063