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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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Trends in atmospheric new-particle formation
Tuomo Nieminen,Ari Asmi,Miikka Dal Maso,P. P. Aalto,Petri Keronen,Tuukka Petäjä,Markku Kulmala,Veli-Matti Kerminen +7 more
Posted ContentDOI
Multiyear statistics of columnar ice production in stratiform clouds over Hyytiälä, Finland
TL;DR: In this article, columnar-ice-producing clouds were divided into subcategories, using the temperature difference, Δ T, between the altitudes where columns are first detected and the cloud top altitude.
Posted ContentDOI
Chemometric analysis of aerosol mass spectra: exploratory methods to extract and classify anthropogenic aerosol chemotypes
Mikko Äijälä,Liine Heikkinen,Roman Fröhlich,Francesco Canonaco,André S. H. Prévôt,Heikki Junninen,Tuukka Petäjä,Markku Kulmala,Douglas R. Worsnop,Mikael Ehn +9 more
TL;DR: In this article, Äijälä, Liine Heikkinen, Roman Fröhlich, Francesco Canonaco, André S.H. Prévôt, Heikki Junninen, Tuukka Petäjä, Markku Kulmala, Douglas Worsnop and Mikael Ehn used exploratory methods to extract and classify anthropogenic aerosol chemotypes.
Posted ContentDOI
Rapid formation of intense haze episode in Beijing
Yonghong Wang,Yonghong Wang,Yuesi Wang,Guiqian Tang,Tao Song,Putian Zhou,Zirui Liu,Bo Hu,Dongshen Ji,Lili Wang,Xiaowan Zhu,Chao Yan,Mikael Ehn,Wenkang Gao,Yuepeng Pan,Jinyuan Xin,Yang Sun,Veli-Matti Kerminen,Markku Kulmala,Markku Kulmala,Markku Kulmala,Tuukka Petäjä,Tuukka Petäjä,Tuukka Petäjä +23 more
TL;DR: Wang et al. as mentioned in this paper used three years of measurements of air pollutants at three different height levels on a 325-meter Beijing meteorology tower, and found that a positive particulate matter-boundary layer feedback mechanism existed at three vertical observation heights during intense haze polluted periods within the mixing layer.
Journal ArticleDOI
Observed coupling between air mass history, secondary growth of nucleation mode particles and aerosol pollution levels in Beijing
Simo Hakala,Ville Vakkari,F. Bianchi,Lubna Dada,Chenjuan Deng,Kaspar Dällenbach,Yao Fu,J. X. Jiang,Jose Kangasluoma,Joni Kujansuu,Y Y Liu,Tuukka Petäjä,Li Wang,C. Yan,Markkij Kulmala,Pauli Paasonen +15 more
TL;DR: In this paper , the authors used air mass history analysis in combination with different fields related to the intensity of anthropogenic emissions in order to calculate air mass exposure to anthropogenic emission (AME) prior to their arrival at Beijing, China.