DOI: 10.1002/2014GL059436
论文题名: Light-enhanced primary marine aerosol production from biologically productive seawater
作者: Long M.S. ; Keene W.C. ; Kieber D.J. ; Frossard A.A. ; Russell L.M. ; Maben J.R. ; Kinsey J.D. ; Quinn P.K. ; Bates T.S.
刊名: Geophysical Research Letters
ISSN: 0094-10201
EISSN: 1944-9932
出版年: 2014
卷: 41, 期: 7 起始页码: 2661
结束页码: 2670
语种: 英语
英文关键词: aerosol production
; biogeochemistry
; marine aerosol
Scopus关键词: Biogeochemistry
; Reservoirs (water)
; Surface active agents
; Uncertainty analysis
; Aerosol generators
; Aerosol production
; Biogeochemical process
; Controlled conditions
; Marine aerosols
; Oligotrophic regions
; Oligotrophic waters
; Physicochemical property
; Seawater
; aeration
; aerosol composition
; diel variation
; light
; marine atmosphere
; oligotrophic environment
; physicochemical property
; scavenging (chemistry)
; seawater
; surfactant
; Atlantic Ocean
; Atlantic Ocean (Northwest)
; Pacific Ocean
; Pacific Ocean (Northeast)
英文摘要: Physical and biogeochemical processes in seawater controlling primary marine aerosol (PMA) production and composition are poorly understood and associated with large uncertainties in estimated fluxes into the atmosphere. PMA production was investigated in the biologically productive NE Pacific Ocean and in biologically productive and oligotrophic regions of the NW Atlantic Ocean. Physicochemical properties of model PMA, produced by aeration of fresh seawater under controlled conditions, were quantified. Diel variability in model PMA mass and number fluxes was observed in biologically productive waters, increasing following sunrise and decreasing to predawn levels overnight. Such variability was not seen in oligotrophic waters. During daytime, surfactant scavenging by aeration in the aerosol generator without replenishing the seawater in the reservoir reduced the model PMA production in productive waters to nighttime levels but had no influence on production from oligotrophic waters. Results suggest bubble plume interactions with sunlight-mediated biogenic surfactants in productive seawater significantly enhanced model PMA production. Key Points Surface ocean biogeochemistry mediates physics of marine aerosol production Diel cycles in biologically productive surface seawater mediate production Observations show chemical processes affecting mass and number production fluxes © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899044248&doi=10.1002%2f2014GL059436&partnerID=40&md5=3f4a05b333adb33cae3403f146136564
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7465
Appears in Collections: 气候减缓与适应
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作者单位: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States
Recommended Citation:
Long M.S.,Keene W.C.,Kieber D.J.,et al. Light-enhanced primary marine aerosol production from biologically productive seawater[J]. Geophysical Research Letters,2014-01-01,41(7).