|
1.
|
Size-dependent influence of NO$_{x}$ on the growth rates of organic aerosol particles
/ Yan, C (Helsinki U.) ; Nie, W (Nanjing U.) ; Vogel, A L (CERN ; PSI, Villigen) ; Dada, L (Helsinki U.) ; Lehtipalo, K (Helsinki U. ; PSI, Villigen ; Finnish Meteorological Inst.) ; Stolzenburg, D (Vienna U.) ; Wagner, R (Helsinki U.) ; Rissanen, M P (Helsinki U.) ; Xiao, M (PSI, Villigen) ; Ahonen, L (Helsinki U.) et al.
Atmospheric new-particle formation (NPF) affects climate by contributing to a large fraction of the cloud condensation nuclei (CCN). Highly oxygenated organic molecules (HOMs) drive the early particle growth and therefore substantially influence the survival of newly formed particles to CCN. [...]
2020
- Published in : Sci. Adv. 6 (2020) eaay4945
|
|
|
2.
|
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
|
|
|
3.
|
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
|
|
|
4.
|
Measurement–model comparison of stabilized Criegee intermediate and highly oxygenated molecule production in the CLOUD chamber
/ Sarnela, Nina (U. Helsinki (main)) ; Jokinen, Tuija (U. Helsinki (main)) ; Duplissy, Jonathan (U. Helsinki (main)) ; Yan, Chao (U. Helsinki (main)) ; Nieminen, Tuomo (UEF, Kuopio) ; Ehn, Mikael (U. Helsinki (main)) ; Schobesberger, Siegfried (U. Helsinki (main) ; UEF, Kuopio ; U. Washington, Seattle (main)) ; Heinritzi, Martin (Goethe U., Frankfurt (main)) ; Ehrhart, Sebastian (Goethe U., Frankfurt (main)) ; Lehtipalo, Katrianne (U. Helsinki (main) ; PSI, Villigen) et al.
Atmospheric oxidation is an important phenomenon which produces large quantities of low-volatility compounds such as sulfuric acid and oxidized organic compounds. Such species may be involved in the nucleation of particles and enhance their subsequent growth to reach the size of cloud condensation nuclei (CCN). [...]
2018 - 18 p.
- Published in : Atmos. Chem. Phys. 18 (2018) 2363-2380
Fulltext: PDF; External link: Fulltext
|
|
|
5.
|
Modeling the thermodynamics and kinetics of sulfuric acid-dimethylamine-water nanoparticle growth in the CLOUD chamber
/ Ahlm, L (ACES, Stockholm University) ; Yli-Juuti, T (UEF, Kuopio) ; Schobesberger, S (Helsinki U. ; Washington U., Seattle) ; Praplan, A P (Helsinki U.) ; Kim, J (UEF, Kuopio) ; Tikkanen, O -P (UEF, Kuopio ; Helsinki U.) ; Lawler, M J (UC, Irvine) ; Smith, J N (UEF, Kuopio ; UC, Irvine) ; Tröstl, J (PSI, Villigen) ; Acosta Navarro, J C (ACES, Stockholm University) et al.
Dimethylamine (DMA) has a stabilizing effect on sulfuric acid (SA) clusters, and the SA and DMA molecules and clusters likely play important roles in both aerosol particle formation and growth in the atmosphere. We use the monodisperse particle growth model for acid-base chemistry in nanoparticle growth (MABNAG) together with direct and indirect observations from the CLOUD4 and CLOUD7 experiments in the cosmics leaving outdoor droplets (CLOUD) chamber at CERN to investigate the size and composition evolution of freshly formed particles consisting of SA, DMA, and water as they grow to 20 nm in dry diameter [...]
2016 - 16 p.
- Published in : Aerosol Sci. Technol. 50 (2016) 1017-1032
|
|
|
6.
|
Hygroscopicity of nanoparticles produced from homogeneous nucleation in the CLOUD experiments
/ Kim, J (UEF, Kuopio) ; Ahlm, L (Stockholm U.) ; Yli-Juuti, T (UEF, Kuopio) ; Lawler, M (UEF, Kuopio ; NCAR, Boulder) ; Keskinen, H (UEF, Kuopio) ; Tröstl, J (PSI, Villigen) ; Schobesberger, S (Helsinki U.) ; Duplissy, J (Helsinki U.) ; Amorim, A (Lisbon, CENTRA) ; Bianchi, F (PSI, Villigen ; Zurich, ETH) et al.
Sulfuric acid, amines and oxidized organics have been found to be important compounds in the nucleation and initial growth of atmospheric particles. Because of the challenges involved in determining the chemical composition of objects with very small mass, however, the properties of the freshly nucleated particles and the detailed pathways of their formation processes are still not clear. [...]
2016 - 12 p.
- Published in : Atmosph. Chem. Phys. 16 (2016) 293-304
Fulltext: PDF;
|
|
|
7.
|
Unexpectedly acidic nanoparticles formed in dimethylamine–ammonia–sulfuric-acid nucleation experiments at CLOUD
/ Lawler, Michael J (UC, Irvine (main)) ; Winkler, Paul M (Vienna U.) ; Kim, Jaeseok (UEF, Kuopio ; Korea Polar Research Institute, Republic of Korea) ; Ahlm, Lars (Stockholm U.) ; Tröstl, Jasmin (PSI, Villigen) ; Praplan, Arnaud P (Helsinki U. ; Finnish Meteorological Inst.) ; Schobesberger, Siegfried (Helsinki U. ; Washington U., Seattle) ; Kürten, Andreas (Goethe U., Frankfurt (main)) ; Kirkby, Jasper (Goethe U., Frankfurt (main) ; CERN) ; Bianchi, Federico (Helsinki U.) et al.
New particle formation driven by acid–base chemistry was initiated in the CLOUD chamber at CERN by introducing atmospherically relevant levels of gas-phase sulfuric acid and dimethylamine (DMA). Ammonia was also present in the chamber as a gas-phase contaminant from earlier experiments [...]
2016 - 18 p.
- Published in : Atmosph. Chem. Phys. 16 (2016) 13601-13618
Fulltext: PDF;
|
|
|
8.
|
The effect of acid–base clustering and ions on the growth of atmospheric nano-particles
/ Lehtipalo, Katrianne (Helsinki U. ; PSI, Villigen) ; Rondo, Linda (Frankfurt U.) ; Kontkanen, Jenni (Helsinki U.) ; Schobesberger, Siegfried (Helsinki U. ; Washington U., Seattle) ; Jokinen, Tuija (Helsinki U.) ; Sarnela, Nina (Helsinki U.) ; Kürten, Andreas (Frankfurt U.) ; Ehrhart, Sebastian (Frankfurt U. ; CERN) ; Franchin, Alessandro (Helsinki U.) ; Nieminen, Tuomo (Helsinki U.) et al.
The growth of freshly formed aerosol particles can be the bottleneck in their survival to cloud condensation nuclei. It is therefore crucial to understand how particles grow in the atmosphere. [...]
2016
- Published in : Nature Commun. 7 (2016) 11594
Fulltext: PDF;
|
|
|
9.
|
Experimental particle formation rates spanning tropospheric sulfuric acid and ammonia abundances, ion production rates, and temperatures
/ Kürten, Andreas ; Bianchi, Federico ; Almeida, Joao (CERN) ; Kupiainen-Määttä, Oona ; Dunne, Eimear M. ; Duplissy, Jonathan (CERN) ; Williamson, Christina ; Barmet, Peter ; Breitenlechner, Martin ; Dommen, Josef et al.
Binary nucleation of sulfuric acid and water as well as ternary nucleation involving ammonia arethought to be the dominant processes responsible for new particle formation (NPF) in the cold temperaturesof the middle and upper troposphere. Ions are also thought to be important for particle nucleation inthese regions. [...]
2016 - 24 p.
- Published in : J. Geophys. Res. Atmos. 121 (2016) 12,377-12,400
|
|
|
10.
|
Effect of dimethylamine on the gas phase sulfuric acid concentration measured by Chemical Ionization Mass Spectrometry
/ Rondo, L. ; Ehrhart, S. (CERN) ; Kürten, A. (Frankfurt U.) ; Adamov, A. (Helsinki U.) ; Bianchi, F. (PSI, Villigen ; Zurich, ETH) ; Breitenlechner, M. (Innsbruck U.) ; Duplissy, J. (Helsinki U.) ; Franchin, A. (Helsinki U.) ; Dommen, J. (PSI, Villigen) ; Donahue, N.M. (Carnegie Mellon U.) et al.
Sulfuric acid is widely recognized as a very important substance driving atmospheric aerosolnucleation. Based on quantum chemical calculations it has been suggested that the quantitative detectionof gas phase sulfuric acid (H2SO4) by use of Chemical Ionization Mass Spectrometry (CIMS) could be biased inthe presence of gas phase amines such as dimethylamine (DMA). [...]
2016 - 14 p.
- Published in : J. Geophys. Res. Atmos. 121 (2016) 3036-3049
Fulltext: BIN; Fulltext from publisher: PDF;
|
|