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DOI: 10.1002/2015GL063142
论文题名:
Adsorptive uptake of water by semisolid secondary organic aerosols
作者: Pajunoja A.; Lambe A.T.; Hakala J.; Rastak N.; Cummings M.J.; Brogan J.F.; Hao L.; Paramonov M.; Hong J.; Prisle Nø.L.; Malila J.; Romakkaniemi S.; Lehtinen K.E.J.; Laaksonen A.; Kulmala M.; Massoli P.; Onasch T.B.; Donahue N.M.; Riipinen I.; Davidovits P.; Worsnop D.R.; Petäjä T.; Virtanen A.
刊名: Geophysical Research Letters
ISSN: 0094-9244
EISSN: 1944-8975
出版年: 2015
卷: 42, 期:8
起始页码: 3063
结束页码: 3068
语种: 英语
英文关键词: adsorption ; aerosol ; hygroscopicity ; SOA ; solubility
Scopus关键词: Adsorption ; Atmospheric humidity ; Solubility ; Atmospheric model ; Critical issues ; Direct observations ; Hygroscopic behavior ; hygroscopicity ; Secondary organic aerosols ; SOA ; Water saturations ; Aerosols ; accuracy assessment ; adsorption ; aerosol property ; atmospheric modeling ; climate effect ; hygroscopicity ; water uptake
英文摘要: Aerosol climate effects are intimately tied to interactions with water. Here we combine hygroscopicity measurements with direct observations about the phase of secondary organic aerosol (SOA) particles to show that water uptake by slightly oxygenated SOA is an adsorption-dominated process under subsaturated conditions, where low solubility inhibits water uptake until the humidity is high enough for dissolution to occur. This reconciles reported discrepancies in previous hygroscopicity closure studies. We demonstrate that the difference in SOA hygroscopic behavior in subsaturated and supersaturated conditions can lead to an effect up to about 30% in the direct aerosol forcing - highlighting the need to implement correct descriptions of these processes in atmospheric models. Obtaining closure across the water saturation point is therefore a critical issue for accurate climate modeling. ©2015. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929347185&doi=10.1002%2f2015GL063142&partnerID=40&md5=c4e6289bfd99475587f070dfba5e71df
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8860
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: Department of Applied Physics, University of Eastern Finland, Kuopio, Finland

Recommended Citation:
Pajunoja A.,Lambe A.T.,Hakala J.,et al. Adsorptive uptake of water by semisolid secondary organic aerosols[J]. Geophysical Research Letters,2015-01-01,42(8).
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