New particle formation in the free troposphere. A question of chemistry and timing
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2016
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01A - Journal article
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Science
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352
Issue / Number
6289
Pages / Duration
1109-1112
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American Association for the Advancement of Science
Place of publication / Event location
Washington
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Abstract
From neutral to new
Many of the particles in the troposphere are formed in situ, but what fraction of all tropospheric particles do they constitute and how exactly are they made? Bianchi et al report results from a high-altitude research station. Roughly half of the particles were newly formed by the condensation of highly oxygenated multifunctional compounds. A combination of laboratory results, field measurements, and model calculations revealed that neutral nucleation is more than 10 times faster than ion-induced nucleation, that particle growth rates are size-dependent, and that new particle formation occurs during a limited time window.
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500 - Naturwissenschaften
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0036-8075
1095-9203
1095-9203
Language
English
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Yes
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Published
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Closed
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BIANCHI, Federico, Jasmin TRÖSTL, Heikki JUNNINEN, Carla FREGE, Stephan HENNE, Christopher R. HOYLE, Ugo MOLTENI, Erik HERRMANN, Alexey ADAMOV, Nicolas BUKOWIECKI, Xuemeng CHEN, Jonathan DUPLISSY, Martin GYSEL, Manuel HUTTERLI, Juha KANGASLUOMA, Jenni KONTKANEN, Andreas KÜRTEN, Hanna E. MANNINEN, Steffen MÜNCH, Otso PERÄKYLÄ, Tuukka PETÄJÄ, Linda RONDO, Christina WILLIAMSON, Ernest WEINGARTNER, Joachim CURTIUS, Douglas R. WORSNOP, Markku KULMALA, Josef DOMMEN und Urs BALTENSPERGER, 2016. New particle formation in the free troposphere. A question of chemistry and timing. Science. 2016. Bd. 352, Nr. 6289, S. 1109–1112. DOI 10.1126/science.aad5456. Verfügbar unter: https://doi.org/10.26041/fhnw-7822