DOI: 10.1002/2016GL069389
论文题名: Evidence of atmospheric nanoparticle formation from emissions of marine microorganisms
作者: Sellegri K. ; Pey J. ; Rose C. ; Culot A. ; DeWitt H.L. ; Mas S. ; Schwier A.N. ; Temime-Roussel B. ; Charriere B. ; Saiz-Lopez A. ; Mahajan A.S. ; Parin D. ; Kukui A. ; Sempere R. ; D'Anna B. ; Marchand N.
刊名: Geophysical Research Letters
ISSN: 0094-9555
EISSN: 1944-9286
出版年: 2016
卷: 43, 期: 12 起始页码: 6596
结束页码: 6603
语种: 英语
英文关键词: aerosol
; emission
; iodine
; marine
; microorganism
; nucleation
Scopus关键词: Aerosols
; Amines
; Biology
; Earth atmosphere
; Gas dynamics
; Iodine
; Microorganisms
; Neutron emission
; Nucleation
; Biological emission
; Dimethyl sulfide oxidation
; Gas-phase species
; Marine
; Marine microorganism
; Nanoparticle formation
; New particle formation
; Number concentration
; Climate change
英文摘要: Earth, as a whole, can be considered as a living organism emitting gases and particles into its atmosphere, in order to regulate its own temperature. In particular, oceans may respond to climate change by emitting particles that ultimately will influence cloud coverage. At the global scale, a large fraction of the aerosol number concentration is formed by nucleation of gas-phase species, but this process has never been directly observed above oceans. Here we present, using semicontrolled seawater-air enclosures, evidence that nucleation may occur from marine biological emissions in the atmosphere of the open ocean. We identify iodine-containing species as major precursors for new particle clusters' formation, while questioning the role of the commonly accepted dimethyl sulfide oxidation products, in forming new particle clusters in the region investigated and within a time scale on the order of an hour. We further show that amines would sustain the new particle formation process by growing the new clusters to larger sizes. Our results suggest that iodine-containing species and amines are correlated to different biological tracers. These observations, if generalized, would call for a substantial change of modeling approaches of the sea-to-air interactions. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977117678&doi=10.1002%2f2016GL069389&partnerID=40&md5=9d773e580cdc975e6dae28397cab9e28
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10518
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Laboratoire de Météorologie Physique, CNRS-UMR6016, Université Blaise Pascal, Aubière, France
Recommended Citation:
Sellegri K.,Pey J.,Rose C.,et al. Evidence of atmospheric nanoparticle formation from emissions of marine microorganisms[J]. Geophysical Research Letters,2016-01-01,43(12).