Articles | Volume 16, issue 24
Atmos. Chem. Phys., 16, 15709–15740, 2016
https://doi.org/10.5194/acp-16-15709-2016

Special issue: Amazon Tall Tower Observatory (ATTO) Special Issue

Special issue: Observations and Modeling of the Green Ocean Amazon (GoAmazon2014/5)...

Atmos. Chem. Phys., 16, 15709–15740, 2016
https://doi.org/10.5194/acp-16-15709-2016
Research article
20 Dec 2016
Research article | 20 Dec 2016

Long-term observations of cloud condensation nuclei in the Amazon rain forest – Part 1: Aerosol size distribution, hygroscopicity, and new model parametrizations for CCN prediction

Mira L. Pöhlker et al.

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Short summary
The paper presents a systematic characterization of cloud condensation nuclei (CCN) concentration in the central Amazonian atmosphere. Our results show that the CCN population in this globally important ecosystem follows a pollution-related seasonal cycle, in which it mainly depends on changes in total aerosol size distribution and to a minor extent in the aerosol chemical composition. Our results allow an efficient modeling and prediction of the CCN population based on a novel approach.
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