Articles | Volume 17, issue 2
https://doi.org/10.5194/acp-17-1529-2017
https://doi.org/10.5194/acp-17-1529-2017
Research article
 | 
31 Jan 2017
Research article |  | 31 Jan 2017

CCN production by new particle formation in the free troposphere

Clémence Rose, Karine Sellegri, Isabel Moreno, Fernando Velarde, Michel Ramonet, Kay Weinhold, Radovan Krejci, Marcos Andrade, Alfred Wiedensohler, Patrick Ginot, and Paolo Laj

Data sets

SMPS particle size distribution Marcos Andrade http://ebas.nilu.no/

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Short summary
Using an indirect method based on particle size distribution measurements, we show that new particle formation (NPF) is responsible for a large contribution to the cloud condensation nuclei concentration at the highest observatory in the world (Bolivia, 5240 m a.s.l.) as expected from some global model predictions. We also provide unique results related to the influence of the boundary layer on the NPF process, showing direct evidence for the important NPF frequency in the free troposphere.
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