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In situ measurement of isoprene in the marine air and surface seawater from the western North Pacific
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)
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Submitter: 河村 公隆
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