Towards a concentration closure of sub-6 nm aerosol particles and sub-3 nm atmospheric clusters

Autor(en)

Markku Kulmala, Dominik Stolzenburg, Lubna Dada, Runlong Cai, Jenni Kontkanen, Chao Yan, Juha Kangasluoma, Lauri R. Ahonen, Loic Gonzalez-Carracedo, Juha Sulo, Santeri Tuovinen, Chenjuan Deng, Yiran Li, Katrianne Lehtipalo, Kari E. J. Lehtinen, Tuukka Petäjä, Paul M. Winkler, Jingkun Jiang, Veli-Matti Kerminen

Abstrakt

Atmospheric clusters play a key role in atmospheric new particle formation and they are a sensitive indicator for atmospheric chemistry. Both the formation and loss of atmospheric clusters include a complex set of interlinked physical and chemical processes, and therefore their dynamics is highly non-linear. Here we derive a set of simple equations to estimate the atmospheric cluster concentrations in size ranges of 1.5-2 nm and 2-3 nm as well as 3-6 nm aerosol particles. We compared the estimated concentrations with measured ones both in a boreal forest site (the SMEAR II station in Hyytia center dot la center dot, Finland) and in an urban site (the AHL/BUCT station in Beijing, China). We made this comparison first for 3-6 nm particles, since in this size range observations are more reliable than at smaller sizes, and then repeated it for the 2-3 nm size range. Finally, we estimated cluster concentrations in the 1.5-2 nm size range. Our main finding is that the present observations are able to detect a major fraction of existing atmospheric clusters.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

University of Helsinki, Beijing University of Chemical Technology, Nanjing University, Lomonosov Moscow State University (MSU), École polytechnique fédérale de Lausanne, Paul Scherrer Institute, Tsinghua University, Finnish Meteorological Institute, University of Eastern Finland

Journal

Journal of Aerosol Science

Band

159

Anzahl der Seiten

11

ISSN

0021-8502

DOI

https://doi.org/10.1016/j.jaerosci.2021.105878

Publikationsdatum

01-2022

Peer-reviewed

Ja

ÖFOS 2012

103037 Umweltphysik, 103039 Aerosolphysik, 105206 Meteorologie, 105208 Atmosphärenchemie

Schlagwörter

ASJC Scopus Sachgebiete

Mechanical Engineering, Pollution, Fluid Flow and Transfer Processes, Environmental engineering, Atmospheric Science

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/05835124-b279-4be3-81b1-c4eb7f6a8400