T
Tuukka Petäjä
Researcher at University of Helsinki
Publications - 620
Citations - 38508
Tuukka Petäjä is an academic researcher from University of Helsinki. The author has contributed to research in topics: Aerosol & Particle. The author has an hindex of 82, co-authored 526 publications receiving 30572 citations. Previous affiliations of Tuukka Petäjä include Helsinki Institute of Physics & National Center for Atmospheric Research.
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Journal Article
Airborne measurements over the boreal forest of southern Finland during new particle formation events in 2009 and 2010
Siegfried Schobesberger,Riikka Väänänen,Katri Leino,Aki Virkkula,John Backman,Toivo Pohja,Erkki Siivola,Alessandro Franchin,Jyri Mikkilä,Mikhail Paramonov,P. P. Aalto,Radovan Krejci,Tuukka Petäjä,Markku Kulmala +13 more
TL;DR: The results suggest that nucleation does not necessarily occur close to the surface, and in one presented case the authors found evidence of NPF occurring in a limited area above cloud, in the complete absence of a regional NPF event.
Journal ArticleDOI
Biogenic particles formed in the Himalaya as an important source of free tropospheric aerosols
F. Bianchi,Heikki Junninen,Alessandro Bigi,Victoria A. Sinclair,Lubna Dada,Christopher R. Hoyle,Qiaozhi Zha,Lei Yao,Lauri Ahonen,Paolo Bonasoni,S. Buenrostro Mazon,Manuel Hutterli,Paolo Laj,Paolo Laj,Paolo Laj,Katrianne Lehtipalo,Katrianne Lehtipalo,Juha Kangasluoma,V.-M. Kerminen,Jenni Kontkanen,Angela Marinoni,Sander Mirme,Ugo Molteni,Tuukka Petäjä,Matthieu Riva,Matthieu Riva,Clémence Rose,Karine Sellegri,Chao Yan,Douglas R. Worsnop,Markku Kulmala,Markku Kulmala,Urs Baltensperger,J. Dommen +33 more
TL;DR: The authors showed that up-valley winds funnel gaseous aerosol precursors to higher altitudes, and during this transport, these are oxidized into compounds of very low volatility, which rapidly form a large number of aerosol particles.
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Intercomparison of air ion spectrometers: an evaluation of results in varying conditions
Stephanie Gagne,Katrianne Lehtipalo,Hanna E. Manninen,Tuomo Nieminen,Siegfried Schobesberger,Alessandro Franchin,Taina Yli-Juuti,J. Boulon,A. Sonntag,Sander Mirme,Aadu Mirme,Urmas Hõrrak,Tuukka Petäjä,Eija Asmi,Markku Kulmala +14 more
TL;DR: In this paper, the authors evaluated 11 air ion spectrometers from Airel Ltd. after they had spent one year in field measurements as a part of the EUCAARI project.
Journal ArticleDOI
Evolution of particle composition in CLOUD nucleation experiments
Helmi Keskinen,Annele Virtanen,Jorma Joutsensaari,Georgios Tsagkogeorgas,Jonathan Duplissy,Siegfried Schobesberger,Martin Gysel,Francesco Riccobono,Jay G. Slowik,F. Bianchi,Taina Yli-Juuti,Katrianne Lehtipalo,Linda Rondo,Martin Breitenlechner,Agnieszka Kupc,Joao Almeida,António Amorim,Eimear M. Dunne,Eimear M. Dunne,Andrew J. Downard,Sebastian Ehrhart,Alessandro Franchin,Maija Kajos,Jasper Kirkby,Andreas Kürten,Tuomo Nieminen,Vladimir Makhmutov,Serge Mathot,Pasi Miettinen,Antti Onnela,Tuukka Petäjä,Arnaud P. Praplan,Filipe Duarte Santos,Simon Schallhart,Mikko Sipilä,Yuri Stozhkov,António Tomé,Petri Vaattovaara,Daniela Wimmer,André S. H. Prévôt,J. Dommen,Neil M. Donahue,Richard C. Flagan,Ernest Weingartner,Y. Viisanen,Ilona Riipinen,Armin Hansel,Joachim Curtius,Markku Kulmala,D. R. Worsnop,D. R. Worsnop,Urs Baltensperger,Heike Wex,F. Stratmann,Ari Laaksonen,Ari Laaksonen +55 more
TL;DR: In this article, the authors investigated the composition of nucleated nanoparticles formed from these compounds in the Clouds Leaving Outdoor Droplets (CLOUD) chamber experiments at CERN via analysis of the particle hygroscopicity, ethanol affinity, oxidation state, and ion composition.
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Sub-3 nm Particle Detection with Commercial TSI 3772 and Airmodus A20 Fine Condensation Particle Counters
TL;DR: In this article, the authors explored the possibility to detect sub-3-nm particles with commercially available TSI 3772 and Airmodus A20 condensation particle Counters (CPCs), when operated under modified temperature and inlet flow settings.