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
Impact on short-lived climate forcers increases projected warming due to deforestation.
Catherine E. Scott,S. A. Monks,S. A. Monks,Dominick V. Spracklen,Steve R. Arnold,Piers M. Forster,Alexandru Rap,Mikko Äijälä,Paulo Artaxo,Kenneth S. Carslaw,Martyn P. Chipperfield,Mikael Ehn,Stefania Gilardoni,Liine Heikkinen,Markku Kulmala,Tuukka Petäjä,Carly Reddington,Luciana V. Rizzo,Erik Swietlicki,Elisabetta Vignati,Chris Wilson +20 more
TL;DR: In this paper, the authors show that a scenario of complete global deforestation results in a net positive radiative forcing (RF; 0.12 −W −m −2) from SLCF, with the negative RF from decreases in ozone and methane concentrations partially offsetting the positive aerosol RF.
Journal ArticleDOI
Microphysical explanation of the RH-dependent water affinity of biogenic organic aerosol and its importance for climate
Narges Rastak,Aki Pajunoja,J. C. Acosta Navarro,J. Ma,Mijung Song,Mijung Song,Daniel G. Partridge,Alf Kirkevåg,Y. Leong,Y. Leong,Weiwei Hu,Weiwei Hu,Nathan F. Taylor,Andrew T. Lambe,K. M. Cerully,Aikaterini Bougiatioti,Pengfei Liu,Radovan Krejci,Tuukka Petäjä,Carl J. Percival,Paul Davidovits,D. R. Worsnop,Annica M. L. Ekman,Athanasios Nenes,S. Martin,Jose L. Jimenez,Jose L. Jimenez,Don R. Collins,David Topping,Allan K. Bertram,Andreas Zuend,Annele Virtanen,Ilona Riipinen +32 more
TL;DR: In this article, the authors combine laboratory experiments, thermodynamic modeling, field observations, and climate modeling to explain the molecular mechanisms behind RH-dependent SOA water-uptake with solubility and phase separation.
Journal ArticleDOI
Modeling regional deposited dose of submicron aerosol particles.
Tareq Hussein,Jakob Löndahl,Pauli Paasonen,Pauli Paasonen,Antti Joonas Koivisto,Tuukka Petäjä,Kaarle Hämeri,Kaarle Hämeri,Markku Kulmala +8 more
TL;DR: This model can be extended to youngsters (<12 years old) after gaining accurate information about the deposition fraction inside their respiratory system and their breathing pattern and is foreseen to bridge the gap between exposure and response in epidemiological studies.
Journal ArticleDOI
Organic aerosol concentration and composition over Europe: insights from comparison of regional model predictions with aerosol mass spectrometer factor analysis
Christos Fountoukis,A. G. Megaritis,Ksakousti Skyllakou,P. E. Charalampidis,Christodoulos Pilinis,H. A. C. Denier van der Gon,Monica Crippa,Francesco Canonaco,Claudia Mohr,Claudia Mohr,André S. H. Prévôt,James Allan,Laurent Poulain,Tuukka Petäjä,Petri Tiitta,Samara Carbone,Astrid Kiendler-Scharr,Eiko Nemitz,Colin D. O'Dowd,Erik Swietlicki,Spyros N. Pandis,Spyros N. Pandis +21 more
TL;DR: A detailed three-dimensional regional chemi- cal transport model (Particulate Matter Comprehensive Air Quality Model with Extensions, PMCAMx) was applied over Europe, focusing on the formation and chemical transforma- tion of organic matter.
Journal ArticleDOI
Contribution of sulfuric acid and oxidized organic compounds to particle formation and growth
Francesco Riccobono,Linda Rondo,Mikko Sipilä,Peter Barmet,Joachim Curtius,Josef Dommen,Mikael Ehn,Sebastian Ehrhart,Markku Kulmala,Andreas Kürten,Jyri Mikkilä,Pauli Paasonen,Tuukka Petäjä,Ernest Weingartner,Urs Baltensperger +14 more
TL;DR: In this paper, the authors performed chamber experiments designed to study the contributions of sulfuric acid and organic vapors to the formation and early growth of nucleated particles and found that both condensation of oxidized organic compounds and reactive uptake contribute to particle growth.