DOI: 10.1002/2015GB005346
Scopus记录号: 2-s2.0-84962650606
论文题名: Longitudinal distributions of dicarboxylic acids, ω-oxoacids, pyruvic acid, α-dicarbonyls, and fatty acids in the marine aerosols from the central Pacific including equatorial upwelling
作者: Hoque M ; M ; M ; , Kawamura K
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期: 3 起始页码: 534
结束页码: 548
语种: 英语
英文关键词: diacids
; marine aerosols
; marine productivity
; photochemical oxidation
; the central Pacific
; upwelling
Scopus关键词: aerosol
; air-sea interaction
; carbon cycle
; chemical composition
; fatty acid
; marine environment
; nitrogen
; organic carbon
; organic compound
; organic matter
; oxidation
; photochemistry
; phytochemistry
; spatial distribution
; upwelling
; Japan
; Mexico [North America]
; Pacific Ocean
; Pacific Ocean (Central)
; Pacific Ocean (Equatorial)
英文摘要: Remote marine aerosol samples (total suspended particles) were collected during a cruise in the central Pacific from Japan to Mexico (1°59′N-35°N and 171°54′E-90°58′W). The aerosol samples were analyzed for dicarboxylic acids (C2-C11), ω-oxoacids, pyruvic acid, α-dicarbonyls, and fatty acids as well as organic and elemental carbon, water-soluble organic carbon, and total nitrogen (WSTN). During the study, diacids were the most abundant compound class followed by fatty acids, ω-oxoacids, and α-dicarbonyls. Molecular compositions of diacids showed a predominance of oxalic (C2) acid followed by malonic (C3) and succinic (C4) acids. Oxalic acid comprises 74% of total diacids. This result suggests that photochemical production of oxalic acid is significant over the central Pacific. Spatial distributions of diacids, ω-oxoacids, pyruvic acid, α-dicarbonyls, and fatty acids together with total carbon and WSTN showed higher abundances in the eastern equatorial Pacific where the upwelling of high-nutrient waters followed by high biological productivity is common, indicating that their in situ production is important in the warmer central Pacific through photochemical oxidation from their gaseous and particulate precursors. This study demonstrates that there is a strong linkage in biogeochemical cycles of carbon in the sea-air interface via ocean upwelling, phytoplankton productivity, sea-to-air emissions of organic matter, and formation of secondary organic aerosols in the eastern equatorial Pacific. © 2016. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77872
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan; Now at Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail, Bangladesh
Recommended Citation:
Hoque M,M,M,et al. Longitudinal distributions of dicarboxylic acids, ω-oxoacids, pyruvic acid, α-dicarbonyls, and fatty acids in the marine aerosols from the central Pacific including equatorial upwelling[J]. Global Biogeochemical Cycles,2016-01-01,30(3)