Tracing atmospheric transport of soil microorganisms and higher plant waxes in the East Asian outflow to the North Pacific Rim by using hydroxy fatty acids: Year-round observations at Gosan, Jeju Island

Tyagi, Poonam; Kawamura, Kimitaka; Kariya, Tadashi; Bikkina, Srinivas; Fu, Pingqing; Lee, Meehye

Tracing atmospheric transport of soil microorganisms and higher plant waxes in the East Asian outflow to the North Pacific Rim by using hydroxy fatty acids: Year-round observations at Gosan, Jeju Island

Tyagi, Poonam; Kawamura, Kimitaka; Kariya, Tadashi et al.

Journal of geophysical research atmospheres, 2017, 122(7), 4112-4131

Permalink : https://hdl.handle.net/2115/68835

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アクセス権	open access
URI	https://hdl.handle.net/2115/68835
タイトル	Tracing atmospheric transport of soil microorganisms and higher plant waxes in the East Asian outflow to the North Pacific Rim by using hydroxy fatty acids: Year-round observations at Gosan, Jeju Island
著者	Tyagi, Poonam ; Kawamura, Kimitaka ; Kariya, Tadashi ; Bikkina, Srinivas ; Fu, Pingqing ; Lee, Meehye
著者名 Tyagi, Poonam
e-Rad_Researcher 70201449 著者名 Kawamura, Kimitaka
著者名 Kariya, Tadashi
著者名 Bikkina, Srinivas
著者名 Fu, Pingqing
著者名 Lee, Meehye
言語	英語
キーワード	Hydroxy fatty acids
	Gram-negative bacteria
	Seasonal variation
	long-range atmospheric transport
	East Asian outflow
発行日	2017-04-16
出版者	American Geophysical Union
収録物名	Journal of geophysical research atmospheres
巻(号)	122(7)
ページ	4112-4131
抄録	Atmospheric transport of soil microorganisms and higher plant waxes in East Asia significantly influences the aerosol composition over the North Pacific. This study investigates the year-round atmospheric abundances of hydroxy fatty acids (FAs), tracers of soil microorganisms (-isomers), and plant waxes (- and -isomers), in total suspended particles collected at Gosan, Jeju Island, during April 2001 to March 2002. These hydroxy FAs showed a pronounced seasonality, higher concentrations in winter/spring and lower concentrations in summer/autumn, which are consistent with other tracers of soil microbes (trehalose), resuspended dust (nss-Ca2+), and stable carbon isotopic composition (C-13) of total carbon. The molecular distributions of -hydroxy FAs (predominance of C-12 and C-16 in winter/spring and summer/autumn, respectively) are consistent with those from a remote island (Chichijima) in the North Pacific and Asian dust standards (CJ-1 and CJ-2). This observation together with back trajectories over Gosan reveal that desert sources in China during winter and arid regions of Mongolia and Russian Far East during spring are the major contributors of soil microbes over the North Pacific. Predominance of -isomers (83%) over -hydroxy FAs (16%) revealed a major contribution of terrestrial lipids from higher plant waxes over soil microbes in the East Asian outflow.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2017 American Geophysical Union.
PISSN	2169-897X
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1002/2016JD025496