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In situ measurement of isoprene in the marine air and surface seawater from the western North Pacific

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Title: In situ measurement of isoprene in the marine air and surface seawater from the western North Pacific
Authors: Matsunaga, Sou Browse this author
Mochida, Michihiro Browse this author
Saito, Takuya Browse this author
Kawamura, Kimitaka Browse this author →KAKEN DB
Keywords: sea-to-air emission
VOCs
long-range transport
cryo-focus
liquid CO2
Issue Date: Dec-2002
Publisher: Elsevier
Journal Title: Atmospheric Environment
Volume: 36
Issue: 39-40
Start Page: 6051
End Page: 6057
Publisher DOI: 10.1016/S1352-2310(02)00657-X
Abstract: Isoprene (2-methyl-1,3-butadiene) was measured on board of R/V Mirai for eight air samples and fourteen seawater samples collected in the western North Pacific during ACE-Asia campaign (from May 18 to May 26, 2001). The measurements were conducted in situ using a cryo focus/gas chromatography/mass spectrometry (Cryo/GC/MS). Concentrations of isoprene ranged from 7.2 to 111 parts-per-trillion (pptv) in the marine air, and ranged from below 1.2 pmol L-1 to 9.4 pmol L-1 in the seawater. Based on these results, sea-to-air emissions of isoprene were calculated to be from 16.4 to 24.6 nmol m-2 day-1. The upper limits of the emission rates were also calculated to be from 3.2 to 30.4 nmol m-2 day-1. Atmospheric isoprene concentrations cannot be explained only by the emission from the seawater. Thus the concentrations of isoprene in the marine air in western North Pacific should be significantly affected by terrestrial vegetational emission and subsequent long-range atmospheric transport of isoprene.
Relation: http://www.sciencedirect.com/science/journal/13522310
Type: article (author version)
URI: http://hdl.handle.net/2115/10510
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 河村 公隆

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