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CERN Document Server Sök i 8 journaler efter:  Sökningen tog 1.17 sekunder. 
1.
Potential pre-industrial–like new particle formation induced by pure biogenic organic vapors in Finnish peatland / Huang, Wei (Helsinki U.) ; Junninen, Heikki (Tartu, Inst. Phys.) ; Garmash, Olga (Tampere U. of Tech. ; Washington U., Seattle) ; Lehtipalo, Katrianne (Helsinki U.) ; Stolzenburg, Dominik (TU Vienna) ; Lampilahti, Janne L P (Helsinki U.) ; Ezhova, Ekaterina (Helsinki U.) ; Schallhart, Simon (STUK, Helsinki) ; Rantala, Pekka (Helsinki U.) ; Aliaga, Diego (Helsinki U.) et al.
Pure biogenic new particle formation (NPF) induced by highly oxygenated organic molecules (HOMs) could be an important mechanism for pre-industrial aerosol formation. However, it has not been unambiguously confirmed in the ambient due to the scarcity of truly pristine continental locations in the present-day atmosphere or the lack of chemical characterization of NPF precursors. [...]
2024 - 11 p. - Published in : Sci. Adv. 10 (2024) adm9191 Fulltext: PDF;
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2.
The driving factors of new particle formation and growth in the polluted boundary layer / Xiao, Mao ; Hoyle, Christopher R ; Dada, Lubna ; Stolzenburg, Dominik ; Kürten, Andreas ; Wang, Mingyi ; Lamkaddam, Houssni ; Garmash, Olga ; Mentler, Bernhard ; Molteni, Ugo et al.
New particle formation (NPF) is a significant source of atmospheric particles, affecting climate and air quality. Understanding the mechanisms involved in urban aerosols is important to develop effective mitigation strategies. [...]
2021 - 17 p. - Published in : Atmos. Chem. Phys. 21 (2021) 14275-14291 Fulltext: PDF; Supplement: PDF;
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3.
Photo-oxidation of Aromatic Hydrocarbons Produces Low-Volatility Organic Compounds / Wang, Mingyi (Carnegie Mellon U.) ; Chen, Dexian (Carnegie Mellon U.) ; Xiao, Mao (PSI, Villigen) ; Ye, Qing (Carnegie Mellon U.) ; Stolzenburg, Dominik (Vienna U.) ; Hofbauer, Victoria (Carnegie Mellon U.) ; Ye, Penglin (Aerodyne Research, Billerica) ; Vogel, Alexander L (Frankfurt U.) ; Mauldin, Roy L (U. Colorado, Boulder ; Carnegie Mellon U.) ; Amorim, Antonio (Lisbon U.) et al.
To better understand the role of aromatic hydrocarbons in new-particle formation, we measured the particle-phase abundance and volatility of oxidation products following the reaction of aromatic hydrocarbons with OH radicals. For this we used thermal desorption in an iodide-adduct Time-of-Flight Chemical-Ionization Mass Spectrometer equipped with a Filter Inlet for Gases and AEROsols (FIGAERO-ToF-CIMS). [...]
2020 - 11 p. - Published in : Environ. Sci. Technol. 54 (2020) 7911-7921
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4.
Molecular understanding of the suppression of new-particle formation by isoprene / Heinritzi, Martin (Frankfurt U.) ; Dada, Lubna (Helsinki U.) ; Simon, Mario (Frankfurt U.) ; Stolzenburg, Dominik (Vienna U.) ; Wagner, Andrea C (Frankfurt U. ; U. Colorado, Boulder) ; Fischer, Lukas (Innsbruck U.) ; Ahonen, Lauri R (Helsinki U.) ; Amanatidis, Stavros (Caltech, Pasadena (main)) ; Baalbaki, Rima (Helsinki U.) ; Baccarini, Andrea (PSI, Villigen) et al.
Nucleation of atmospheric vapours produces more than half of global cloud condensation nuclei and so has an important influence on climate. Recent studies show that monoterpene (C$_{10}$H$_{16}$) oxidation yields highly oxygenated products that can nucleate with or without sulfuric acid. [...]
2020 - 13 p. - Published in : Atmos. Chem. Phys. 20 (2020) 11809-11821
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5.
Rapid growth of organic aerosol nanoparticles over a wide tropospheric temperature range / Stolzenburg, Dominik (Vienna U.) ; Fischer, Lukas (Innsbruck U.) ; Vogel, Alexander L (Frankfurt U. ; CERN ; PSI, Villigen) ; Heinritzi, Martin (Frankfurt U.) ; Schervish, Meredith (Carnegie Mellon U.) ; Simon, Mario (Frankfurt U.) ; Wagner, Andrea C (Frankfurt U.) ; Dada, Lubna (Helsinki U.) ; Ahonen, Lauri R (Helsinki U.) ; Amorim, Antonio (Lisbon U. ; CMAF, Lisbon) et al.
Nucleation and growth of aerosol particles from atmospheric vapors constitutes a major source of global cloud condensation nuclei (CCN). The fraction of newly formed particles that reaches CCN sizes is highly sensitive to particle growth rates, especially for particle sizes <10 nm, where coagulation losses to larger aerosol particles are greatest. [...]
2018 - 6 p. - Published in : Proc. Natl. Acad. Sci. U. S. A. 115 (2018) 9122-9127
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6.
Multicomponent new particle formation from sulfuric acid, ammonia, and biogenic vapors / Lehtipalo, Katrianne (U. Helsinki (main) ; PSI, Villigen ; Finnish Meteorological Inst.) ; Yan, Chao (U. Helsinki (main)) ; Dada, Lubna (U. Helsinki (main)) ; Bianchi, Federico (U. Helsinki (main)) ; Xiao, Mao (PSI, Villigen) ; Wagner, Robert (U. Helsinki (main)) ; Stolzenburg, Dominik (Vienna U.) ; Ahonen, Lauri R (U. Helsinki (main)) ; Amorim, Antonio (Lisbon, CENTRA ; Lisbon U.) ; Baccarini, Andrea (PSI, Villigen) et al.
A major fraction of atmospheric aerosol particles, which affect both air quality and climate, form from gaseous precursors in the atmosphere. Highly oxygenated organic molecules (HOMs), formed by oxidation of biogenic volatile organic compounds, are known to participate in particle formation and growth. [...]
2018 - 10 p. - Published in : Sci. Adv. 4 (2018) eaau5363 Fulltext: PDF;
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7.
The role of ions in new particle formation in the CLOUD chamber / Wagner, Robert ; Yan, Chao ; Lehtipalo, Katrianne ; Duplissy, Jonathan ; Nieminen, Tuomo ; Kangasluoma, Juha ; Ahonen, Lauri R ; Dada, Lubna ; Kontkanen, Jenni ; Manninen, Hanna E (CERN) et al.
The formation of secondary particles in the atmosphere accounts for more than half of global cloud condensation nuclei. Experiments at the CERN CLOUD (Cosmics Leaving OUtdoor Droplets) chamber have underlined the importance of ions for new particle formation, but quantifying their effect in the atmosphere remains challenging. [...]
2017 - 17 p. - Published in : Atmos. Chem. Phys. 17 (2017) 15181-15197 Fulltext: PDF; External link: Fulltext
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8.
Influence of temperature on the molecular composition of ions and charged clusters during pure biogenic nucleation / Frege, Carla (PSI, Villigen) ; Ortega, Ismael K ; Rissanen, Matti P ; Praplan, Arnaud P ; Steiner, Gerhard ; Heinritzi, Martin ; Ahonen, Lauri ; Amorim, António ; Bernhammer, Anne-Kathrin ; Bianchi, Federico et al.
It was recently shown by the CERN CLOUD experiment that biogenic highly oxygenated molecules (HOMs) form particles under atmospheric conditions in the absence of sulfuric acid, where ions enhance the nucleation rate by 1–2 orders of magnitude. The biogenic HOMs were produced from ozonolysis of α-pinene at 5 °C. [...]
2018 - 15 p. - Published in : Atmos. Chem. Phys. 18 (2018) 65-79 Fulltext: PDF;
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