| DOI: | 10.1002/2014GL059396
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| 论文题名: | Rapid changes in biomass burning aerosols by atmospheric oxidation |
| 作者: | Vakkari V.; Kerminen V.-M.; Beukes J.P.; Tiitta P.; Van Zyl P.G.; Josipovic M.; Venter A.D.; Jaars K.; Worsnop D.R.; Kulmala M.; Laakso L.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10196
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| EISSN: | 1944-9927
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| 出版年: | 2014
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| 卷: | 41, 期:7 | | 起始页码: | 2644
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| 结束页码: | 2651
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| 语种: | 英语
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| 英文关键词: | aerosols and particles
; atmospheric processes
; land/atmosphere interactions
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| Scopus关键词: | Atmospheric aerosols
; Atmospheric radiation
; Biomass
; Computer simulation
; Oxidation
; Aerosol scattering coefficient
; Aerosols and particles
; Atmospheric process
; Atmospheric transport
; Cloud condensation nuclei
; Indirect radiative forcing
; Single-scattering albedo
; Spatial and temporal scale
; Atmospheric movements
; aerosol composition
; aerosol formation
; air-soil interaction
; albedo
; atmospheric plume
; atmospheric transport
; biomass burning
; climate effect
; cloud condensation nucleus
; optical property
; oxidation
; radiative forcing
; size distribution
; Southern Africa
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| 英文摘要: | Primary and secondary aerosol particles originating from biomass burning contribute significantly to the atmospheric aerosol budget and thereby to both direct and indirect radiative forcing. Based on detailed measurements of a large number of biomass burning plumes of variable age in southern Africa, we show that the size distribution, chemical composition, single-scattering albedo, and hygroscopicity of biomass burning particles change considerably during the first 2-4 h of their atmospheric transport these changes, driven by atmospheric oxidation and subsequent secondary aerosol formation, may reach a factor of 6 for the aerosol scattering coefficient and a factor >10 for the cloud condensation nuclei concentration. Since the observed changes take place over the spatial and temporal scales that are neither covered by emission inventories nor captured by large-scale model simulations, the findings reported here point out a significant gap in our understanding on the climatic effects of biomass burning aerosols. Key Points A large number of biomass burning plumes were observed in southern Africa Cloud activating and optical properties change rapidly during plume transport The changes in climatically relevant properties depend on atmospheric oxidation © 2014 the Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899040439&doi=10.1002%2f2014GL059396&partnerID=40&md5=4e6972b279c84575099522f92af08125
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7460
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Physics, University of Helsinki, Helsinki, Finland
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| Recommended Citation: | |
Vakkari V.,Kerminen V.-M.,Beukes J.P.,et al. Rapid changes in biomass burning aerosols by atmospheric oxidation[J]. Geophysical Research Letters,2014-01-01,41(7).
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