气候变化领域集成服务门户(CCPortal): Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon

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DOI	10.1126/science.1223264
	Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon
	Pöhlker C.; Wiedemann K.T.; Sinha B.; Shiraiwa M.; Gunthe S.S.; Smith M.; Su H.; Artaxo P.; Chen Q.; Cheng Y.; Elbert W.; Gilles M.K.; Kilcoyne A.L.D.; Moffet R.C.; Weigand M.; Martin S.T.; Pöschl U.; Andreae M.O.
发表日期	2012
ISSN	0036-8075
起始页码	1075
结束页码	1078
卷号	337 期号:6098
英文摘要	The fine particles serving as cloud condensation nuclei in pristine Amazonian rainforest air consist mostly of secondary organic aerosol. Their origin is enigmatic, however, because new particle formation in the atmosphere is not observed. Here, we show that the growth of organic aerosol particles can be initiated by potassium-salt - rich particles emitted by biota in the rainforest. These particles act as seeds for the condensation of low- or semi-volatile organic compounds from the atmospheric gas phase or multiphase oxidation of isoprene and terpenes. Our findings suggest that the primary emission of biogenic salt particles directly influences the number concentration of cloud condensation nuclei and affects the microphysics of cloud formation and precipitation over the rainforest.
英文关键词	isoprene; potassium salt; terpene; volatile organic compound; aerosol; atmospheric gas; cloud condensation nucleus; oxidation; potassium; pristine environment; rainforest; salt; volatile organic compound; article; biota; cloud; oxidation; particle size; precipitation; priority journal; rain forest; scanning electron microscopy; scanning transmission electron microscopy; secondary organic aerosol; X ray absorption spectroscopy; Amazon River
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245102
作者单位	Biogeochemistry Department, Max Planck Institute for Chemistry, Mainz 55020, Germany; Institute of Physics, University of São Paulo, São Paulo 05508-900, Brazil; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States; Ecology and Evolutionary Biology Department, University of Arizona, Tucson, AZ 85721, United States; Particle Chemistry Department, Max Planck Institute for Chemistry, Mainz 55020, Germany; Department of Earth and Environmental Science, Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Manauli PO, India; Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, United States; Environmental and Water Resources Engineering Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Advanced Light Source, Lawrence Berkeley National Laborato...
推荐引用方式 GB/T 7714	Pöhlker C.,Wiedemann K.T.,Sinha B.,et al. Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon[J],2012,337(6098).
APA	Pöhlker C..,Wiedemann K.T..,Sinha B..,Shiraiwa M..,Gunthe S.S..,...&Andreae M.O..(2012).Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon.Science,337(6098).
MLA	Pöhlker C.,et al."Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon".Science 337.6098(2012).