CERN Accelerating science

CERN Document Server 5 записей найдено  Поиск длился 0.59 секунд. 
1.
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;
2.
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
3.
Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules / Schobesberger, Siegfried (Helsinki U.) ; Junninen, Heikki (Helsinki U.) ; Bianchi, Federico (PSI, Villigen) ; Lönn, Gustaf (Helsinki U.) ; Ehn, Mikael (Helsinki U.) ; Lehtipalo, Katrianne (Helsinki U.) ; Dommen, Josef (PSI, Villigen) ; Ehrhart, Sebastian (Goethe U., Frankfurt (main)) ; Ortega, Ismael K (Helsinki U.) ; Franchin, Alessandro (Helsinki U.) et al.
Atmospheric aerosols formed by nucleation of vapors affect radiative forcing and therefore climate. However, the underlying mechanisms of nucleation remain unclear, particularly the involvement of organic compounds. [...]
2013 - Published in : Proc. Natl. Acad. Sci. U.S.A. 110 (2013) 17223-17228
4.
Molecular understanding of sulphuric acid-amine particle nucleation in the atmosphere / Almeida, João (Goethe U., Frankfurt ; CERN) ; Schobesberger, Siegfried (Helsinki U.) ; Kürten, Andreas (Goethe U., Frankfurt) ; Ortega, Ismael K (Helsinki U.) ; Kupiainen-Määttä, Oona (Helsinki U.) ; Praplan, Arnaud P (PSI, Villigen) ; Adamov, Alexey (Helsinki U.) ; Amorim, Antonio (U. Lisbon ; U. Beira Int., Lisbon) ; Bianchi, Federico (PSI, Villigen) ; Breitenlechner, Martin (U. Innsbruck) et al.
Nucleation of aerosol particles from trace atmospheric vapours is thought to provide up to half of global cloud condensation nuclei. Aerosols can cause a net cooling of climate by scattering sunlight and by leading to smaller but more numerous cloud droplets, which makes clouds brighter and extends their lifetimes. [...]
2013 - 11 p. - Published in : Nature 502 (2013) 359-363 NPG Open Access article: PDF; Supplementary Information: PDF;
5.
Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation / Kirkby, Jasper (CERN) ; Curtius, Joachim (Goethe U., Frankfurt) ; Almeida, João (Goethe U., Frankfurt ; SIM, Lisbon U. ; Beira Interior U., Lisbon) ; Dunne, Eimear (Leeds U.) ; Duplissy, Jonathan (CERN ; Helsinki U. ; Helsinki Inst. of Phys.) ; Ehrhart, Sebastian (Goethe U., Frankfurt) ; Franchin, Alessandro (Helsinki U.) ; Gagné, Stéphanie (Helsinki U. ; Helsinki Inst. of Phys.) ; Ickes, Luisa (Goethe U., Frankfurt) ; Kürten, Andreas (Goethe U., Frankfurt) et al.
Atmospheric aerosols exert an important influence on climate1 through their effects on stratiform cloud albedo and lifetime2 and the invigoration of convective storms3. Model calculations suggest that almost half of the global cloud condensation nuclei in the atmospheric boundary layer may originate from the nucleation of aerosols from trace condensable vapours4, although the sensitivity of the number of cloud condensation nuclei to changes of nucleation rate may be small5, 6. [...]
2011 - Published in : Nature 476 (2011) 429-433

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4 Schnitzhofer, R
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