Articles | Volume 22, issue 5
Research article
16 Mar 2022
Research article |  | 16 Mar 2022

Occurrence and growth of sub-50 nm aerosol particles in the Amazonian boundary layer

Marco A. Franco, Florian Ditas, Leslie A. Kremper, Luiz A. T. Machado, Meinrat O. Andreae, Alessandro Araújo, Henrique M. J. Barbosa, Joel F. de Brito, Samara Carbone, Bruna A. Holanda, Fernando G. Morais, Janaína P. Nascimento, Mira L. Pöhlker, Luciana V. Rizzo, Marta Sá, Jorge Saturno, David Walter, Stefan Wolff, Ulrich Pöschl, Paulo Artaxo, and Christopher Pöhlker


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2021-765', Anonymous Referee #1, 20 Oct 2021
    • AC1: 'Reply on RC1', Marco Aurélio Franco, 16 Jan 2022
  • RC2: 'Comment on acp-2021-765', Anonymous Referee #2, 29 Nov 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Marco Aurélio Franco on behalf of the Authors (17 Jan 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (20 Jan 2022) by Veli-Matti Kerminen
AR by Marco Aurélio Franco on behalf of the Authors (03 Feb 2022)  Manuscript 
Short summary
In Central Amazonia, new particle formation in the planetary boundary layer is rare. Instead, there is the appearance of sub-50 nm aerosols with diameters larger than about 20 nm that eventually grow to cloud condensation nuclei size range. Here, 254 growth events were characterized which have higher predominance in the wet season. About 70 % of them showed direct relation to convective downdrafts, while 30 % occurred partly under clear-sky conditions, evidencing still unknown particle sources.
Final-revised paper