Aerosol particle formation in the upper residual layer

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http://hdl.handle.net/10138/332512

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Lampilahti , J , Leino , K , Manninen , A , Poutanen , P , Franck , A , Peltola , M , Hietala , P , Beck , L , Dada , L , Quelever , L , Öhrnberg , R R K , Zhou , Y , Ekblom , M , Vakkari , V , Zilitinkevich , S , Kerminen , V-M , Petäjä , T & Kulmala , M 2021 , ' Aerosol particle formation in the upper residual layer ' , Atmospheric Chemistry and Physics , vol. 21 , no. 10 , pp. 7901-7915 . https://doi.org/10.5194/acp-21-7901-2021

Title: Aerosol particle formation in the upper residual layer
Author: Lampilahti, Janne; Leino, Katri; Manninen, Antti; Poutanen, Pyry; Franck, Anna; Peltola, Maija; Hietala, Paula; Beck, Lisa; Dada, Lubna; Quelever, Lauriane; Öhrnberg, Ronja Riina Karoliina; Zhou, Ying; Ekblom, Madeleine; Vakkari, Ville; Zilitinkevich, Sergej; Kerminen, Veli-Matti; Petäjä, Tuukka; Kulmala, Markku
Contributor: University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, INAR Physics
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, INAR Physics
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
Date: 2021-05-25
Language: eng
Number of pages: 15
Belongs to series: Atmospheric Chemistry and Physics
ISSN: 1680-7316
URI: http://hdl.handle.net/10138/332512
Abstract: According to current estimates, atmospheric new particle formation (NPF) produces a large fraction of aerosol particles and cloud condensation nuclei in the Earth's atmosphere, which have implications for health and climate. Despite recent advances, atmospheric NPF is still insufficiently understood in the lower troposphere, especially above the mixed layer (ML). This paper presents new results from colocated airborne and ground-based measurements in a boreal forest environment, showing that many NPF events (similar to 42 %) appear to start in the topmost part of the residual layer (RL). The freshly formed particles may be entrained into the growing mixed layer (ML) where they continue to grow in size, similar to the aerosol particles formed within the ML. The results suggest that in the boreal forest environment, NPF in the upper RL has an important contribution to the aerosol load in the boundary layer (BL).
Subject: 114 Physical sciences
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