1.
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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
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2.
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NO at low concentration can enhance the formation of highly oxygenated biogenic molecules in the atmosphere
/ Nie, Wei (Nanjing U. (main) ; Unlisted, CN ; Helsinki U. ; SYRTE, Paris) ; Yan, Chao (Nanjing U. (main) ; Unlisted, CN ; Helsinki U. ; SYRTE, Paris) ; Yang, Liwen (Nanjing U. (main)) ; Roldin, Pontus (Khlopin Radium Inst. ; Malmo U.) ; Liu, Yuliang (Nanjing U. (main)) ; Vogel, Alexander L (Frankfurt U., FIAS ; Frankfurt U.) ; Molteni, Ugo (PSI, Villigen ; UC, Irvine (main) ; Unlisted, US) ; Stolzenburg, Dominik (Helsinki U. ; Vienna U.) ; Finkenzeller, Henning (Colorado U.) ; Amorim, Antonio (CMAF, Lisbon) et al.
The interaction between nitrogen monoxide (NO) and organic peroxy radicals (RO$_{2}$) greatly impacts the formation of highly oxygenated organic molecules (HOM), the key precursors of secondary organic aerosols. It has been thought that HOM production can be significantly suppressed by NO even at low concentrations. [...]
2023 - 11 p.
- Published in : Nature Commun. 14 (2023) 3347
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3.
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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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4.
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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
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5.
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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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6.
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Roll vortices induce new particle formation bursts in the planetary boundary layer
/ Lampilahti, Janne (Helsinki U.) ; Manninen, Hanna Elina (CERN) ; Leino, Katri (Helsinki U.) ; Väänänen, Riikka (Helsinki U.) ; Manninen, Antti (Finnish Meteorological Inst.) ; Mazon, Stephany Buenrostro (Helsinki U.) ; Nieminen, Tuomo (Helsinki U.) ; Leskinen, Matti (Helsinki U.) ; Enroth, Joonas (Helsinki U.) ; Bister, Marja (Helsinki U.) et al.
Recent studies have shown the importance of new
particle formation (NPF) to global cloud condensation nuclei (CCN) production, as well as to air pollution in megacities. In addition to the necessary presence of low-volatility
vapors that can form new aerosol particles, both numerical
and observational studies have shown that the dynamics of
the planetary boundary layer (BL) plays an important role
in NPF. [...]
2020 - 14 p.
- Published in : Atmos. Chem. Phys. 20 (2020) 11841-11854
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7.
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Zeppelin-led study on the onset of new particle formation in the planetary boundary layer
/ Lampilahti, Janne (Helsinki U.) ; Manninen, Hanna E (CERN) ; Nieminen, Tuomo (Helsinki U.) ; Mirme, Sander (Tartu U.) ; Ehn, Mikael (Helsinki U.) ; Pullinen, Iida (Kuopio U.) ; Leino, Katri (Helsinki U.) ; Schobesberger, Siegfried (Helsinki U. ; Kuopio U.) ; Kangasluoma, Juha (Helsinki U.) ; Kontkanen, Jenni (Helsinki U.) et al.
We compared observations of aerosol particle formation and growth in different parts of the planetary boundary layer at two different environments that have frequent
new particle formation (NPF) events. In summer 2012 we
had a campaign in Po Valley, Italy (urban background), and
in spring 2013 a similar campaign took place in Hyytiälä,
Finland (rural background). [...]
2021 - 15 p.
- Published in : Atmos. Chem. Phys. 21 (2021) 12649-12663
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8.
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Causes and importance of new particle formation in the present-day and preindustrial atmospheres
/ Gordon, Hamish (Leeds U.) ; Kirkby, Jasper (CERN ; Goethe U., Frankfurt (main)) ; Baltensperger, Urs (PSI, Villigen) ; Bianchi, Federico (Helsinki U.) ; Breitenlechner, Martin (Harvard U. (main)) ; Curtius, Joachim (Goethe U., Frankfurt (main)) ; Dias, Antonio (CERN) ; Dommen, Josef (PSI, Villigen) ; Donahue, Neil M (Carnegie Mellon U.) ; Dunne, Eimear M (Kuopio U.) et al.
New particle formation has been estimated to produce around half of cloud-forming particlesin the present-day atmosphere, via gas-to-particle conversion. Here we assess the importance of newparticle formation (NPF) for both the present-day and the preindustrial atmospheres [...]
2017 - 22 p.
- Published in : J. Geophys. Res. 122 (2017) 8739-8760
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9.
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Molecular understanding of new-particle formation from $\alpha$-pinene between −50 and +25 °C
/ Simon, Mario (Frankfurt U.) ; Dada, Lubna (Helsinki U.) ; Heinritzi, Martin (Frankfurt U.) ; Scholz, Wiebke (Innsbruck U.) ; Stolzenburg, Dominik (Vienna U.) ; Fischer, Lukas (Innsbruck U.) ; Wagner, Andrea C (Frankfurt U. ; U. Colorado, Boulder) ; Kürten, Andreas (Frankfurt U.) ; Rörup, Birte (Helsinki U.) ; He, Xu-Cheng (Helsinki U.) et al.
Highly oxygenated organic molecules (HOMs)
contribute substantially to the formation and growth of atmospheric aerosol particles, which affect air quality, human
health and Earth’s climate. HOMs are formed by rapid, gasphase autoxidation of volatile organic compounds (VOCs)
such as α-pinene, the most abundant monoterpene in the atmosphere. [...]
2020 - 25 p.
- Published in : Atmos. Chem. Phys. 20 (2020) 9183-9207
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10.
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Ion-induced nucleation of pure biogenic particles
/ Kirkby, Jasper (Goethe U., Frankfurt (main) ; CERN) ; Duplissy, Jonathan (Helsinki U. ; Helsinki Inst. of Phys.) ; Sengupta, Kamalika (U. Leeds (main)) ; Frege, Carla (PSI, Villigen) ; Gordon, Hamish (CERN) ; Williamson, Christina (Goethe U., Frankfurt (main)) ; Heinritzi, Martin (Goethe U., Frankfurt (main) ; Innsbruck U.) ; Simon, Mario (Goethe U., Frankfurt (main)) ; Yan, Chao (Helsinki U.) ; Almeida, João (Goethe U., Frankfurt (main) ; CERN) et al.
Atmospheric aerosols and their effect on clouds are thought to be important for anthropogenic radiative forcing of the climate, yet remain poorly understood. Globally, around half of cloud condensation nuclei originate from nucleation of atmospheric vapours. [...]
2016
- Published in : Nature 533 (2016) 521-526
NPG Open Access article: PDF;
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