DOI: 10.1002/2015GL066459
论文题名: Reevaluating the contribution of sulfuric acid and the origin of organic compounds in atmospheric nanoparticle growth
作者: Vakkari V. ; Tiitta P. ; Jaars K. ; Croteau P. ; Beukes J.P. ; Josipovic M. ; Kerminen V.-M. ; Kulmala M. ; Venter A.D. ; Van Zyl P.G. ; Worsnop D.R. ; Laakso L.
刊名: Geophysical Research Letters
ISSN: 0094-8379
EISSN: 1944-8110
出版年: 2015
卷: 42, 期: 23 起始页码: 10486
结束页码: 10493
语种: 英语
英文关键词: aerosol chemical composition
; atmospheric aerosols
; new particle formation
Scopus关键词: Aerosols
; Atmospheric aerosols
; Earth (planet)
; Earth atmosphere
; Geochemistry
; Organic compounds
; Sulfuric acid
; Aerosol chemical composition
; Aerosol measurement
; Aerosol particles
; Biogenic emission
; Gaseous precursors
; Nanoparticle growths
; New particle formation
; Theoretical framework
; Atmospheric chemistry
; aerosol composition
; atmospheric chemistry
; biogenic emission
; nanoparticle
; organic compound
; sulfur
英文摘要: Aerosol particles formed in the atmosphere are important to the Earth's climate system due to their ability to affect cloud properties. At present, little is known about the atmospheric chemistry responsible for the growth of newly formed aerosol particles to climate-relevant sizes. Here combining detailed aerosol measurements with a theoretical framework we found that depending on the gaseous precursors and size of the newly formed particles, the growth was dominated by either sulfuric acid accompanied by ammonium or organic compounds originating in either biogenic emissions or savannah fires. The contribution of sulfuric acid was larger during the early phases of the growth, but in clean conditions organic compounds dominated the growth from 1.5 nm up to climatically relevant sizes. Furthermore, our analysis indicates that in polluted environments the contribution of sulfuric acid to the growth may have been underestimated by up to a factor of 10. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953637487&doi=10.1002%2f2015GL066459&partnerID=40&md5=423a1cef407ff0e25e01e189dad62ad0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7995
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: Research and Development, Finnish Meteorological Institute, Helsinki, Finland
Recommended Citation:
Vakkari V.,Tiitta P.,Jaars K.,et al. Reevaluating the contribution of sulfuric acid and the origin of organic compounds in atmospheric nanoparticle growth[J]. Geophysical Research Letters,2015-01-01,42(23).