DOI: 10.1002/2014GL059913
论文题名: 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
作者: Bikkina S. ; Kawamura K. ; Miyazaki Y. ; Fu P.
刊名: Geophysical Research Letters
ISSN: 0094-10038
EISSN: 1944-9769
出版年: 2014
卷: 41, 期: 10 起始页码: 3649
结束页码: 3657
语种: 英语
英文关键词: diacids
; isoprene-SOA
; marine aerosols
; North Pacific
; organic aerosols
Scopus关键词: Atmospheric aerosols
; Bioactivity
; Isoprene
; Oxalic acid
; Unsaturated fatty acids
; diacids
; isoprene-SOA
; Marine aerosols
; North Pacific
; Organic aerosol
; Dichloroacetic acid
; aerosol formation
; bioactivity
; biological production
; climate forcing
; concentration (composition)
; fatty acid
; isoprene
; marine atmosphere
; open ocean
; organic compound
; tracer
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: 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 α-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. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902296898&doi=10.1002%2f2014GL059913&partnerID=40&md5=358ee41b7725c472549f5a2159fc7dfc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7302
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan
Recommended Citation:
Bikkina S.,Kawamura K.,Miyazaki Y.,et al. 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[J]. Geophysical Research Letters,2014-01-01,41(10).