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1.
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Role of sesquiterpenes in biogenic new particle formation
/ Dada, Lubna (PSI, Villigen ; Helsinki U.) ; Stolzenburg, Dominik (Helsinki U. ; Vienna U. ; TU Vienna) ; Simon, Mario (Frankfurt U.) ; Fischer, Lukas (Innsbruck U.) ; Heinritzi, Martin (Frankfurt U.) ; Wang, Mingyi (Carnegie Mellon U. ; Caltech) ; Xiao, Mao (PSI, Villigen) ; Vogel, Alexander L (Frankfurt U.) ; Ahonen, Lauri (Helsinki U.) ; Amorim, Antonio (Lisbon U.) et al.
Biogenic vapors form new particles in the atmosphere, affecting global climate. The contributions of monoterpenes and isoprene to new particle formation (NPF) have been extensively studied. [...]
2023 - 14 p.
- Published in : Sci. Adv. 9 (2023) adi5297
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2.
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Determination of the collision rate coefficient between charged iodic acid clusters and iodic acid using the appearance time method
/ He, Xu-Cheng (U. Helsinki (main)) ; Iyer, Siddharth (U. Helsinki (main)) ; Sipilä, Mikko (U. Helsinki (main)) ; Ylisirniö, Arttu (UEF, Kuopio) ; Peltola, Maija (Helsinki U.) ; Kontkanen, Jenni (Helsinki U.) ; Baalbaki, Rima (Helsinki U.) ; Simon, Mario (Goethe U., Frankfurt (main)) ; Kürten, Andreas (Goethe U., Frankfurt (main)) ; Tham, Yee Jun (Helsinki U.) et al.
Ions enhance the formation rate of atmospheric aerosol particles, which play an important role in Earth’s radiative balance. Ion-induced nucleation involves the stepwise accretion of neutral monomers onto a molecular cluster containing an ion, which helps to stabilize the cluster against evaporation. [...]
2020 - 12 p.
- Published in : Aerosol Sci. Technol. 55 (2020) 231-242
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3.
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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
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4.
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Vertical profiles of sub-3 nm particles over the boreal forest
/ Leino, Katri (Helsinki U.) ; Lampilahti, Janne (Helsinki U.) ; Poutanen, Pyry (Helsinki U.) ; Väänänen, Riikka (Helsinki U.) ; Manninen, Antti (Helsinki U.) ; Buenrostro Mazon, Stephany (Helsinki U.) ; Dada, Lubna (Helsinki U.) ; Franck, Anna (Helsinki U.) ; Wimmer, Daniela (Helsinki U.) ; Aalto, Pasi P (Helsinki U.) et al.
This work presents airborne observations of sub3 nm particles in the lower troposphere and investigates new
particle formation (NPF) within an evolving boundary layer
(BL). We studied particle concentrations together with supporting gas and meteorological data inside the planetary BL
over a boreal forest site in Hyytiälä, southern Finland. [...]
2019 - 12 p.
- Published in : Atmos. Chem. Phys. 19 (2019) 4127-4138
Fulltext: PDF; External link: Fulltext
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5.
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Enhanced growth rate of atmospheric particles from sulfuric acid
/ Stolzenburg, Dominik (Vienna U. ; Helsinki U.) ; Simon, Mario (Frankfurt U.) ; Ranjithkumar, Ananth (Leeds U.) ; Kürten, Andreas (Frankfurt U.) ; Lehtipalo, Katrianne (Helsinki U. ; Finnish Meteorological Inst.) ; Gordon, Hamish (Leeds U.) ; Ehrhart, Sebastian (Mainz, Max Planck Inst.) ; Finkenzeller, Henning (U. Colorado, Boulder) ; Pichelstorfer, Lukas (Helsinki U.) ; Nieminen, Tuomo (Helsinki U.) et al.
In the present-day atmosphere, sulfuric acid is the
most important vapour for aerosol particle formation and initial growth. However, the growth rates of nanoparticles ( <
10 nm) from sulfuric acid remain poorly measured. [...]
2020 - 14 p.
- Published in : Atmos. Chem. Phys. 20 (2020) 7359-7372
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6.
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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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7.
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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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8.
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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
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9.
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A double inversion: Size and time resolved growth rates for aerosol particles in the CERN CLOUD experiment
/ Williamson, C (Goethe U., Frankfurt (main)) ; Curtius, J (Goethe U., Frankfurt (main)) ; Kürten, A (Goethe U., Frankfurt (main)) ; Almeida, J (Goethe U., Frankfurt (main)) ; Ehrhart, S (Goethe U., Frankfurt (main)) ; Wimmer, D (Goethe U., Frankfurt (main) ; Helsinki U.) ; Lehtipalo, K (Helsinki U.) ; Tröstl, J (PSI, Villigen)
/CLOUD
An integrated analysis of multiple instruments measuring concentrations of aerosol particles in the CLOUD (Cosmics Leaving OUtdoor Droplets) chamber at CERN obtains size and time dependent growth rates. A matrix inversion is performed twice: first to get size distributions from measured concentrations using instrument transfer functions; secondly to get growth rates from size distributions using the aerosol general dynamic equation (GDE)..
2013 - 5 p.
- Published in : AIP Conf. Proc. 1527 (2013) 389-392
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10.
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Insight into Acid–Base Nucleation Experiments by Comparison of the Chemical Composition of Positive, Negative, and Neutral Clusters
/ Bianchi, Federico (PSI, Villigen) ; Praplan, Arnaud P (Helsinki U.) ; Sarnela, Nina (Helsinki U.) ; Dommen, Josef (PSI, Villigen) ; Kürten, Andreas (Goethe U., Frankfurt (main)) ; Ortega, Ismael K (Lille U.) ; Schobesberger, Siegfried (Helsinki U.) ; Junninen, Heikki (Helsinki U.) ; Simon, Mario (Goethe U., Frankfurt (main)) ; Tröstl, Jasmin (PSI, Villigen) et al.
We investigated the nucleation of sulfuric acid together with two bases (ammonia and dimethylamine), at the CLOUD chamber at CERN. The chemical composition of positive, negative, and neutral clusters was studied using three Atmospheric Pressure interface-Time Of Flight (APi-TOF) mass spectrometers: two were operated in positive and negative mode to detect the chamber ions, while the third was equipped with a nitrate ion chemical ionization source allowing detection of neutral clusters. [...]
2014 - 10 p.
- Published in : Environ. Sci. Technol. 48 (2014) 13675-13684
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