G
Georgios Tsagkogeorgas
Researcher at Leibniz Association
Publications - 17
Citations - 3257
Georgios Tsagkogeorgas is an academic researcher from Leibniz Association. The author has contributed to research in topics: Cloud condensation nuclei & Particle. The author has an hindex of 14, co-authored 17 publications receiving 2694 citations.
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Journal ArticleDOI
Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation
Jasper Kirkby,Joachim Curtius,Joao Almeida,Joao Almeida,Eimear M. Dunne,Jonathan Duplissy,Jonathan Duplissy,Jonathan Duplissy,Sebastian Ehrhart,Alessandro Franchin,Stephanie Gagne,Stephanie Gagne,Luisa Ickes,Andreas Kürten,Agnieszka Kupc,A. Metzger,Francesco Riccobono,Linda Rondo,Siegfried Schobesberger,Georgios Tsagkogeorgas,Daniela Wimmer,António Amorim,F. Bianchi,F. Bianchi,Martin Breitenlechner,A. David,Josef Dommen,Andrew J. Downard,Mikael Ehn,Richard C. Flagan,S. Haider,Armin Hansel,Daniel Hauser,Werner Jud,Heikki Junninen,Fabian Kreissl,Alexander N. Kvashin,Ari Laaksonen,Katrianne Lehtipalo,Jorge Lima,Edward R. Lovejoy,Vladimir Makhmutov,Serge Mathot,Jyri Mikkilä,Pierre Minginette,S. Mogo,Tuomo Nieminen,Antti Onnela,Paulo J. Pereira,Tuukka Petäjä,R. Schnitzhofer,John H. Seinfeld,Mikko Sipilä,Mikko Sipilä,Yuri Stozhkov,Frank Stratmann,António Tomé,Joonas Vanhanen,Yrjö Viisanen,Aron Vrtala,Paul E. Wagner,Hansueli Walther,Ernest Weingartner,Heike Wex,Paul M. Winkler,Kenneth S. Carslaw,Douglas R. Worsnop,Urs Baltensperger,Markku Kulmala +68 more
TL;DR: First results from the CLOUD experiment at CERN are presented, finding that atmospherically relevant ammonia mixing ratios of 100 parts per trillion by volume, or less, increase the nucleation rate of sulphuric acid particles more than 100–1,000-fold and ion-induced binary nucleation of H2SO4–H2O can occur in the mid-troposphere but is negligible in the boundary layer.
Journal ArticleDOI
Molecular understanding of sulphuric acid-amine particle nucleation in the atmosphere
Joao Almeida,Joao Almeida,Siegfried Schobesberger,Andreas Kürten,Ismael K. Ortega,Oona Kupiainen-Määttä,Arnaud P. Praplan,Alexey Adamov,António Amorim,F. Bianchi,Martin Breitenlechner,A. David,Josef Dommen,Neil M. Donahue,Andrew J. Downard,Eimear M. Dunne,Jonathan Duplissy,Sebastian Ehrhart,Richard C. Flagan,Alessandro Franchin,Roberto Guida,Jani Hakala,Armin Hansel,Martin Heinritzi,Henning Henschel,Tuija Jokinen,Heikki Junninen,Maija Kajos,Juha Kangasluoma,Helmi Keskinen,Agnieszka Kupc,Theo Kurtén,Alexander N. Kvashin,Ari Laaksonen,Ari Laaksonen,Katrianne Lehtipalo,Markus Leiminger,Johannes Leppä,Ville Loukonen,Vladimir Makhmutov,Serge Mathot,Matthew J. McGrath,Tuomo Nieminen,Tuomo Nieminen,Tinja Olenius,Antti Onnela,Tuukka Petäjä,Francesco Riccobono,Ilona Riipinen,Matti P. Rissanen,Linda Rondo,Taina Ruuskanen,Filipe Duarte Santos,Nina Sarnela,Simon Schallhart,R. Schnitzhofer,John H. Seinfeld,Mario Simon,Mikko Sipilä,Mikko Sipilä,Yuri Stozhkov,Frank Stratmann,António Tomé,Jasmin Tröstl,Georgios Tsagkogeorgas,Petri Vaattovaara,Yrjö Viisanen,Annele Virtanen,Aron Vrtala,Paul E. Wagner,Ernest Weingartner,Heike Wex,Christina Williamson,Daniela Wimmer,Daniela Wimmer,Penglin Ye,Taina Yli-Juuti,Kenneth S. Carslaw,Markku Kulmala,Markku Kulmala,Joachim Curtius,Urs Baltensperger,Douglas R. Worsnop,Hanna Vehkamäki,Jasper Kirkby,Jasper Kirkby +85 more
TL;DR: The results show that, in regions of the atmosphere near amine sources, both amines and sulphur dioxide should be considered when assessing the impact of anthropogenic activities on particle formation.
Journal ArticleDOI
Oxidation products of biogenic emissions contribute to nucleation of atmospheric particles.
Francesco Riccobono,Siegfried Schobesberger,Catherine E. Scott,Josef Dommen,Ismael K. Ortega,Linda Rondo,Joao Almeida,António Amorim,F. Bianchi,Martin Breitenlechner,A. David,Andrew J. Downard,Eimear M. Dunne,Jonathan Duplissy,Jonathan Duplissy,Sebastian Ehrhart,Richard C. Flagan,Alessandro Franchin,Armin Hansel,Heikki Junninen,Maija Kajos,Helmi Keskinen,Agnieszka Kupc,Andreas Kürten,Alexander N. Kvashin,Ari Laaksonen,Katrianne Lehtipalo,Vladimir Makhmutov,Serge Mathot,Tuomo Nieminen,Tuomo Nieminen,Antti Onnela,Tuukka Petäjä,Arnaud P. Praplan,Filipe Duarte Santos,Simon Schallhart,John H. Seinfeld,Mikko Sipilä,Mikko Sipilä,Dominick V. Spracklen,Yuri Stozhkov,Frank Stratmann,António Tomé,Georgios Tsagkogeorgas,Petri Vaattovaara,Yrjö Viisanen,Aron Vrtala,Paul E. Wagner,Ernest Weingartner,Heike Wex,Daniela Wimmer,Kenneth S. Carslaw,Joachim Curtius,Neil M. Donahue,Jasper Kirkby,Jasper Kirkby,Markku Kulmala,Markku Kulmala,Douglas R. Worsnop,Urs Baltensperger +59 more
TL;DR: It is shown, in experiments performed with the CLOUD (Cosmics Leaving Outdoor Droplets) chamber at CERN, that sulfuric acid and oxidized organic vapors at atmospheric concentrations reproduce particle nucleation rates observed in the lower atmosphere.
Journal ArticleDOI
Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules
Siegfried Schobesberger,Heikki Junninen,F. Bianchi,Gustaf Lönn,Mikael Ehn,Katrianne Lehtipalo,Josef Dommen,Sebastian Ehrhart,Ismael K. Ortega,Alessandro Franchin,Tuomo Nieminen,Francesco Riccobono,Manuel Hutterli,Jonathan Duplissy,Joao Almeida,António Amorim,Martin Breitenlechner,Andrew J. Downard,Eimear M. Dunne,Eimear M. Dunne,Richard C. Flagan,Maija Kajos,Helmi Keskinen,Jasper Kirkby,Agnieszka Kupc,Andreas Kürten,Theo Kurtén,Ari Laaksonen,Ari Laaksonen,Serge Mathot,Antti Onnela,Arnaud P. Praplan,Linda Rondo,Filipe Duarte Santos,Simon Schallhart,R. Schnitzhofer,Mikko Sipilä,António Tomé,Georgios Tsagkogeorgas,Hanna Vehkamäki,Daniela Wimmer,Daniela Wimmer,Urs Baltensperger,Kenneth S. Carslaw,Joachim Curtius,Armin Hansel,Tuukka Petäjä,Markku Kulmala,Neil M. Donahue,Douglas R. Worsnop +49 more
TL;DR: High-resolution mass spectra of ion clusters observed during new particle formation experiments performed at the Cosmics Leaving Outdoor Droplets chamber at the European Organization for Nuclear Research confirm that oxidized organics are involved in both the formation and growth of particles under ambient conditions.
Journal ArticleDOI
Causes and importance of new particle formation in the present-day and preindustrial atmospheres
Hamish Gordon,Jasper Kirkby,Jasper Kirkby,Urs Baltensperger,F. Bianchi,Martin Breitenlechner,Joachim Curtius,Antonio Dias,Josef Dommen,Neil M. Donahue,Eimear M. Dunne,Jonathan Duplissy,Sebastian Ehrhart,Sebastian Ehrhart,Richard C. Flagan,Carla Frege,Claudia Fuchs,Armin Hansel,Christopher R. Hoyle,Markku Kulmala,Andreas Kürten,Katrianne Lehtipalo,Katrianne Lehtipalo,Vladimir Makhmutov,Ugo Molteni,Matti P. Rissanen,Yuri Stozkhov,Jasmin Tröstl,Georgios Tsagkogeorgas,Robert Wagner,Christina Williamson,Daniela Wimmer,Paul M. Winkler,Chao Yan,Kenneth S. Carslaw +34 more
TL;DR: In this article, the authors assess the importance of new particle formation (NPF) for both the present-day and the pre-industrial atmospheres using a global aerosol model with parametrizations of NPF from previously published CLOUD chamber experiments involving sulfuric acid, ammonia, organic molecules and ions.