High abundances of oxalic, azelaic, and glyoxylic acids and methylglyoxal in the open ocean with high biological activity: Implication for secondary OA formation from isoprene

Bikkina, Srinivas; Kawamura, Kimitaka; Miyazaki, Yuzo; Fu, Pingqing

High abundances of oxalic, azelaic, and glyoxylic acids and methylglyoxal in the open ocean with high biological activity: Implication for secondary OA formation from isoprene

Bikkina, Srinivas; Kawamura, Kimitaka; Miyazaki, Yuzo et al.

Geophysical Research Letters, 2014, 41(10), 3649-3657

Permalink : https://hdl.handle.net/2115/57474

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アクセス権	open access
URI	https://hdl.handle.net/2115/57474
タイトル	High abundances of oxalic, azelaic, and glyoxylic acids and methylglyoxal in the open ocean with high biological activity: Implication for secondary OA formation from isoprene
著者	Bikkina, Srinivas ; Kawamura, Kimitaka ; Miyazaki, Yuzo ; Fu, Pingqing
著者名 Bikkina, Srinivas
e-Rad_Researcher 70201449 著者名 Kawamura, Kimitaka
e-Rad_Researcher 60376655 著者名 Miyazaki, Yuzo
著者名 Fu, Pingqing
言語	英語
キーワード	organic aerosols
	diacids
	isoprene-SOA
	North Pacific
	marine aerosols
発行日	2014-05-28
出版者	American Geophysical Union
収録物名	Geophysical Research Letters
巻(号)	41(10)
ページ	3649-3657
抄録	Atmospheric dicarboxylic acids (DCA) are a ubiquitous water-soluble component of secondary organic aerosols (SOA), which can act as cloud condensation nuclei (CCN), affecting the Earth's climate. Despite the high abundances of oxalic acid and related compounds in the marine aerosols, there is no consensus on what controls their distributions over the open ocean. Marine biological productivity could play a role in the production of DCA, but there is no substantial evidence to support this hypothesis. Here we present latitudinal distributions of DCA, oxoacids and -dicarbonyls in the marine aerosols from the remote Pacific. Their concentrations were found several times higher in more biologically influenced aerosols (MBA) than less biologically influenced aerosols. We propose isoprene and unsaturated fatty acids as sources of DCA as inferred from significantly higher abundances of isoprene-SOA tracers and azelaic acid in MBA. These results have implications toward the reassessment of climate forcing feedbacks of marine-derived SOA.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2014 American Geophysical Union.
PISSN	0094-8276
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1002/2014GL059913