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  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., et al. (2012). Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon. Science, 337(6098), 1075-1078. doi:10.1126/science.1223264.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0000-D0A1-E Version Permalink: https://hdl.handle.net/21.11116/0000-000A-4D62-2
Genre: Journal Article

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Pöhlker, C.1, Author
Wiedemann, K. T., Author
Sinha, B., Author
Shiraiwa, M., Author
Gunthe, S. S., Author
Smith, M., Author
Su, H., Author
Artaxo, P., Author
Chen, Q., Author
Cheng, Y., Author
Elbert, W., Author
Gilles, M. K., Author
Kilcoyne, A. L. D., Author
Moffet, R. C., Author
Weigand, M., Author
Martin, S. T., Author
Pöschl, U., Author
Andreae, M. O., Author
Affiliations:
1External Organizations, ou_persistent22              

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 Abstract: 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.

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Language(s): eng - English
 Dates: 2012-07-2320122012-08-31
 Publication Status: Issued
 Pages: -
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 Rev. Type: -
 Identifiers: Other: BEX615
DOI: 10.1126/science.1223264
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Title: Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 337 (6098) Sequence Number: - Start / End Page: 1075 - 1078 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1