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 ArticleDOI
Nanoparticles in boreal forest and coastal environment: a comparison of observations and implications of the nucleation mechanism
Katrianne Lehtipalo,Markku Kulmala,Mikko Sipilä,Mikko Sipilä,Tuukka Petäjä,Marko Vana,Marko Vana,Darius Ceburnis,Régis Dupuy,Régis Dupuy,Colin D. O'Dowd +10 more
TL;DR: In this article, the authors measured particle size distributions down to mobility diameters of about 1.3 nm with a pulse-height CPC, and provided evidence of the nucleation mechanism in a coastal environment (Mace Head, Ireland) and in a boreal forest (Hyytiala, Finland).
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Homogenous nucleation of sulfuric acid and water at close to atmospherically relevant conditions
David Brus,David Brus,Kimmo Neitola,Antti-Pekka Hyvärinen,Tuukka Petäjä,Joonas Vanhanen,Mikko Sipilä,Pauli Paasonen,Markku Kulmala,Heikki Lihavainen +9 more
TL;DR: In this article, the authors measured the homogeneous nucleation rates in the system of sulfuric acid and water using a flow tube technique, and compared particle formation rates obtained from atmospheric measurements with nucleation rate of freshly nucleated particles measured with particle size magnifier (PSM).
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Analysis of aerosol effects on warm clouds over the Yangtze River Delta from multi-sensor satellite observations
Y. Liu,Gerrit de Leeuw,Gerrit de Leeuw,Veli-Matti Kerminen,Jiahua Zhang,Putian Zhou,Wei Nie,Ximeng Qi,Juan Hong,Yonghong Wang,Aijun Ding,Huadong Guo,Olaf Krüger,Markku Kulmala,Tuukka Petäjä +14 more
TL;DR: In this article, the authors investigated the relationship between cloud properties and the amount of aerosol particles in the Yangtze River Delta (YRD) using co-located MODIS, CALIOP and CloudSat observations.
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Enhancement of atmospheric H 2 SO 4 / H 2 O nucleation: organic oxidation products versus amines
Torsten Berndt,Mikko Sipilä,Mikko Sipilä,Mikko Sipilä,Frank Stratmann,Tuukka Petäjä,Joonas Vanhanen,Jyri Mikkilä,Johanna Patokoski,Risto Taipale,Roy L. Mauldin,Roy L. Mauldin,Markku Kulmala +12 more
TL;DR: In this article, atmospheric H2SO4 / H2O nucleation influencing effects have been studied in the flow tube IfT-LFT (Institute for Tropospheric Research -Laminar Flow Tube) at 293 ± 0.5 K and a pressure of 1 bar using synthetic air as the carrier gas.
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Collocated observations of cloud condensation nuclei, particle size distributions, and chemical composition.
Julia Schmale,Silvia Henning,Bas Henzing,Helmi Keskinen,Karine Sellegri,Jurgita Ovadnevaite,Aikaterini Bougiatioti,Nikos Kalivitis,Iasonas Stavroulas,Anne Jefferson,Minsu Park,Patrick Schlag,Adam Kristensson,Yoko Iwamoto,Kirsty J. Pringle,Carly Reddington,P. P. Aalto,Mikko Äijälä,Urs Baltensperger,Jakub Bialek,Wolfram Birmili,Wolfram Birmili,Nicolas Bukowiecki,Mikael Ehn,Ann Mari Fjæraa,Markus Fiebig,Göran Frank,Roman Fröhlich,Arnoud Frumau,Masaki Furuya,Emanuel Hammer,Liine Heikkinen,Erik Herrmann,Rupert Holzinger,Hiroyuki Hyono,Maria Kanakidou,Astrid Kiendler-Scharr,Kento Kinouchi,Gerard Kos,Markku Kulmala,Nikolaos Mihalopoulos,Ghislain Motos,Athanasios Nenes,Colin D. O'Dowd,Mikhail Paramonov,Tuukka Petäjä,David Picard,Laurent Poulain,André S. H. Prévôt,Jay G. Slowik,A. Sonntag,Erik Swietlicki,Birgitta Svenningsson,Hiroshi Tsurumaru,Alfred Wiedensohler,Cerina Wittbom,J. A. Ogren,Atsushi Matsuki,Seong Soo Yum,Cathrine Lund Myhre,Kenneth S. Carslaw,Frank Stratmann,Martin Gysel +62 more
TL;DR: Harmonized data records from 11 observatories spanning 98,677 instrument hours for CCN data, 157,880 for particle number size distributions, and 70,817 for chemical composition data are summarized.