Efficiency of organic aerosols as cloud condensation nuclei
نویسندگان
چکیده
منابع مشابه
Organic acids as cloud condensation nuclei
Organic acids as cloud condensation nuclei: Laboratory studies of highly soluble and insoluble species P. Pradeep Kumar , K. Broekhuizen, and J. P. D. Abbatt Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6, Canada Permanent address: Department of Physics, University of Pune, Pune 411007, India Received: 20 December 2002 – Accepted: 4 February 2003 – Published: 20 Febru...
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Atmospheric cloud condensation nuclei (CCN) concentrations are a key uncertainty in the assessment of the effect of anthropogenic aerosol on clouds and climate. The ability of new ultrafine particles to grow to become CCN varies throughout the atmosphere and must be understood in order to understand CCN formation. We have developed the Probability of Ultrafine particle Growth (PUG) model to ans...
متن کاملOrganic acids as cloud condensation nuclei: Laboratory studies of highly soluble and insoluble species
The ability of sub-micron-sized organic acid particles to act as cloud condensation nuclei (CCN) has been examined at room temperature using a newly constructed continuous-flow, thermal-gradient diffusion chamber (TGDC). The organic acids studied were: oxalic, malonic, glutaric, oleic and stearic. The CCN properties of the highly soluble acids – oxalic, malonic and glutaric – match very closely...
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Atmospheric aerosol particles influence global climate as well as impair air quality through their effects on atmospheric visibility and human health. Ultrafine (<100 nm) particles often dominate aerosol numbers, and nucleation of atmospheric vapors is an important source of these particles. To have climatic relevance, however, the freshly nucleated particles need to grow in size. We combine ob...
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Secondary organic aerosol (SOA) was formed in an environmental reaction chamber from the ozonolysis of β-caryophyllene (β-C) at low concentrations (5 ppb or 20 ppb). Experimental parameters were varied to characterize the effects of hydroxyl radicals, light and the presence of lower molecular weight terpene precursor (isoprene) for β-C SOA formation and cloud condensation nuclei (CCN) character...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2012
ISSN: 0096-3941
DOI: 10.1029/2012eo140022