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.
Papers
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Journal ArticleDOI
Sub-3 nm particle size and composition dependent response of a nano-CPC battery
Juha Kangasluoma,Chongai Kuang,Daniela Wimmer,Matti P. Rissanen,Katrianne Lehtipalo,Mikael Ehn,D. R. Worsnop,Jian Wang,Markku Kulmala,Tuukka Petäjä +9 more
TL;DR: In this article, a nano-CPC (condensation particle counter) battery, consisting of four ultrafine CPCs optimized for the detection of sub-3 nm particles, was built.
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Characterization of parameters influencing the spatio-temporal variability of urban particle number size distributions in four European cities
Clemens von Bismarck-Osten,Wolfram Birmili,Matthias Ketzel,Andreas Massling,Tuukka Petäjä,Stephan Weber +5 more
TL;DR: In this paper, three years of aerosol measurements from four European cities were analyzed to identify and quantify the parameters influencing the particle number size distribution (NSD) at different measurement sites (Copenhagen, Helsinki, Leipzig, London).
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Gas-Phase Ozonolysis of Selected Olefins: The Yield of Stabilized Criegee Intermediate and the Reactivity toward SO2
Torsten Berndt,Tuija Jokinen,Roy L. Mauldin,Roy L. Mauldin,Tuukka Petäjä,Hartmut Herrmann,Heikki Junninen,Pauli Paasonen,Douglas R. Worsnop,Douglas R. Worsnop,Mikko Sipilä +10 more
TL;DR: In this article, the results from ozonolysis of 2,3-dimethyl-2-butene (TME), trans-2butene and 1-methyl-cyclohexene (MCH) carried out in an atmospheric pressure flow tube at 293 ± 0.5 K and RH = 50% were reported.
Journal Article
Trends in atmospheric new-particle formation: 16 years of observations in a boreal-forest environment
Tuomo Nieminen,Ari Asmi,Miikka Dal Maso,P. P. Aalto,Petri Keronen,Tuukka Petäjä,Markku Kulmala,Veli-Matti Kerminen +7 more
TL;DR: In this paper, the authors explore the inter-annual variability and trends in sources and sinks of atmospheric nanoparticles in a boreal forest environment, and find that the probability of new particle formation is connected to both air mass origin, explaining a large part of the year-to-year variability in the number of NPF events, and concentrations of lowvolatile vapours.
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Connection of Sulfuric Acid to Atmospheric Nucleation in Boreal Forest
T. Nieminen,H. E. Manninen,S.-L. Sihto,T. Yli-Juuti,Roy L. Mauldin,Tuukka Petäjä,Ilona Riipinen,V.-M. Kerminen,Markku Kulmala +8 more
TL;DR: The connection between measured sulfuric acid and observed formation rate of both charged 2 nm as well as neutral clusters in a boreal forest environment and two proposed nucleation mechanisms were tested.