1.
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Evaporation of sulfate aerosols at low relative humidity
/ Tsagkogeorgas, Georgios (TROPOS, Leibniz) ; Roldin, Pontus (Helsinki U. ; Lund U.) ; Duplissy, Jonathan (Helsinki U. ; Helsinki Inst. of Phys.) ; Rondo, Linda (Goethe U., Frankfurt (main)) ; Tröstl, Jasmin (PSI, Villigen) ; Slowik, Jay G (PSI, Villigen) ; Ehrhart, Sebastian (Goethe U., Frankfurt (main)) ; Franchin, Alessandro (Helsinki U.) ; Kürten, Andreas (Goethe U., Frankfurt (main)) ; Amorim, Antonio (Lisbon, CENTRA) et al.
Evaporation of sulfuric acid from particles can be important in the atmospheres of Earth and Venus. However, the equilibrium constant for the dissociation of H2SO4 to bisulfate ions, which is the one of the fundamental parameters controlling the evaporation of sulfur particles, is not well constrained. [...]
2017 - 16 p.
- Published in : Atmos. Chem. Phys. 17 (2017) 8923-8938
External link: Fulltext
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2.
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Oxidation Products of Biogenic Emissions Contribute to Nucleation of Atmospheric Particles
/ Riccobono, Francesco (PSI, Villigen) ; Schobesberger, S (Helsinki U.) ; Baltensperger, Urs (PSI, Villigen) ; Worsnop, Douglas R (Helsinki U. ; Aerodyne Research, Billerica) ; Curtius, Joachim (Goethe U., Frankfurt (main)) ; Carslaw, Kenneth S (U. Leeds (main)) ; Wimmer, Daniela (Goethe U., Frankfurt (main)) ; Wex, Heike (TROPOS, Leibniz) ; Weingartner, Ernest (PSI, Villigen) ; Wagner, Paul E (Finnish Meteorological Inst.) et al.
Atmospheric new-particle formation affects climate and is one of the least understood atmospheric aerosol processes. The complexity and variability of the atmosphere has hindered elucidation of the fundamental mechanism of new-particle formation from gaseous precursors. [...]
2014
- Published in : Science 344 (2014) 717-721
Data S1: TXT; Data S2: TXT; Data S3: TXT; Data S4: TXT; Supplementary materials: PDF; External link: Free access (choose "reprint")
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3.
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Aqueous phase oxidation of sulphur dioxide by ozone in cloud droplets
/ Hoyle, C R (PSI, Villigen ; Davos Observ.) ; Fuchs, C (PSI, Villigen) ; Järvinen, E (KIT, Karlsruhe) ; Saathoff, H (KIT, Karlsruhe) ; Dias, A (CERN) ; El Haddad, I (PSI, Villigen) ; Gysel, M (PSI, Villigen) ; Coburn, S C (Colorado U., CIRES) ; Tröstl, J (PSI, Villigen) ; Bernhammer, A -K (Innsbruck U. ; Ionicon Analytik GmbH, Innsbruck) et al.
The growth of aerosol due to the aqueous phase oxidation of sulfur dioxide by ozone was measured in laboratory-generated clouds created in the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber at the European Organization for Nuclear Research (CERN). Experiments were performed at 10 and −10 °C, on acidic (sulfuric acid) and on partially to fully neutralised (ammonium sulfate) seed aerosol. [...]
2016 - 20 p.
- Published in : Atmosph. Chem. Phys. 16 (2016) 1693-1712
Fulltext: PDF;
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4.
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Thermodynamics of the formation of sulfuric acid dimers in the binary (H2SO4–H2O) and ternary (H2SO4–H2O–NH3) system
/ Kürten, A (Goethe U., Frankfurt (main)) ; Münch, S (Goethe U., Frankfurt (main)) ; Rondo, L (Goethe U., Frankfurt (main)) ; Bianchi, F (PSI, Villigen ; Zurich, ETH) ; Duplissy, J (CERN) ; Jokinen, T (Helsinki U.) ; Junninen, H (Helsinki U.) ; Sarnela, N (Helsinki U.) ; Schobesberger, S (Helsinki U.) ; Simon, M (Goethe U., Frankfurt (main)) et al.
Sulfuric acid is an important gas influencing atmospheric new particle formation (NPF). Both the binary $(H_2SO_4–H_2O)$ system and the ternary system involving ammonia $(H_2SO_4–H_2O–NH_3)$ may be important in the free troposphere. [...]
2015 - 21 p.
- Published in : Atmosph. Chem. Phys. 15 (2015) 10701-10721
Fulltext: PDF;
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5.
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On the composition of ammonia–sulfuric-acid ion clusters during aerosol particle formation
/ Schobesberger, S (Helsinki U.) ; Franchin, A (Helsinki U.) ; Bianchi, F (PSI, Villigen) ; Rondo, L (Goethe U., Frankfurt (main)) ; Duplissy, J (Helsinki U. ; CERN) ; Kürten, A (Goethe U., Frankfurt (main)) ; Ortega, I K (Helsinki U. ; PhLAM, Villeneuve d'Ascq) ; Metzger, A (Ionicon Analytik GmbH, Innsbruck) ; Schnitzhofer, R (Innsbruck U.) ; Almeida, J (CERN) et al.
The formation of particles from precursor vapors is an important source of atmospheric aerosol. Research at the Cosmics Leaving OUtdoor Droplets (CLOUD) facility at CERN tries to elucidate which vapors are responsible for this new-particle formation, and how in detail it proceeds. [...]
2015 - 24 p.
- Published in : Atmos. Chem. Phys. 15 (2015) 55-78
Fulltext: PDF;
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6.
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Observation of viscosity transition in α-pinene secondary organic aerosol
/ Järvinen, Emma (KIT, Karlsruhe) ; Ignatius, Karoliina (TROPOS, Leibniz) ; Nichman, Leonid (Manchester U.) ; Kristensen, Thomas B (TROPOS, Leibniz) ; Fuchs, Claudia (PSI, Villigen) ; Hoyle, Christopher R (PSI, Villigen ; Davos Observ.) ; Höppel, Niko (KIT, Karlsruhe) ; Corbin, Joel C (PSI, Villigen) ; Craven, Jill (Caltech) ; Duplissy, Jonathan (Helsinki U.) et al.
Under certain conditions, secondary organic aerosol (SOA) particles can exist in the atmosphere in an amorphous solid or semi-solid state. To determine their relevance to processes such as ice nucleation or chemistry occurring within particles requires knowledge of the temperature and relative humidity (RH) range for SOA to exist in these states. [...]
2016 - 16 p.
- Published in : Atmosph. Chem. Phys. 16 (2016) 4423-4438
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7.
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Phase transition observations and discrimination of small cloud particles by light polarization in expansion chamber experiments
/ Nichman, Leonid (Manchester U.) ; Fuchs, Claudia (PSI, Villigen) ; Järvinen, Emma (KIT, Karlsruhe) ; Ignatius, Karoliina (TROPOS, Leibniz) ; Höppel, Niko Florian (KIT, Karlsruhe) ; Dias, Antonio (CERN) ; Heinritzi, Martin (Goethe U., Frankfurt (main)) ; Simon, Mario (Goethe U., Frankfurt (main)) ; Tröstl, Jasmin (PSI, Villigen) ; Wagner, Andrea Christine (Goethe U., Frankfurt (main)) et al.
Cloud microphysical processes involving the ice phase in tropospheric clouds are among the major uncertainties in cloud formation, weather, and general circulation models. The detection of aerosol particles, liquid droplets, and ice crystals, especially in the small cloud particle-size range below 50 μm, remains challenging in mixed phase, often unstable environments. [...]
2016 - 14 p.
- Published in : Atmosph. Chem. Phys. 16 (2016) 3651-3664
Fulltext: PDF;
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8.
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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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9.
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Numerical simulations of mixing conditions and aerosol dynamics in the CERN CLOUD chamber
/ Voigtländer, J (TROPOS, Leibniz) ; Duplissy, J (CERN ; Helsinki U.) ; Rondo, L (Goethe U., Frankfurt (main)) ; Kürten, A (Goethe U., Frankfurt (main)) ; Stratmann, F (TROPOS, Leibniz)
To study the effect of galactic cosmic rays on aerosols and clouds, the Cosmics Leaving OUtdoor Droplets (CLOUD) project was established. Experiments are carried out at a 26.1 m3 tank at CERN (Switzerland). [...]
2012
- Published in : Atmos. Chem. Phys. 12 (2012) 2205-2214
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10.
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Heterogeneous ice nucleation of viscous secondary organic aerosol produced from ozonolysis of α-pinene
/ Ignatius, Karoliina (TROPOS, Leibniz) ; Kristensen, Thomas B (TROPOS, Leibniz) ; Järvinen, Emma (KIT, Karlsruhe) ; Nichman, Leonid (Manchester U.) ; Fuchs, Claudia (PSI, Villigen) ; Gordon, Hamish (CERN) ; Herenz, Paul (KIT, Karlsruhe) ; Hoyle, Christopher R (PSI, Villigen ; Davos Observ.) ; Duplissy, Jonathan (Helsinki U.) ; Garimella, Sarvesh (MIT) et al.
There are strong indications that particles containing secondary organic aerosol (SOA) exhibit amorphous solid or semi-solid phase states in the atmosphere. This may facilitate heterogeneous ice nucleation and thus influence cloud properties. [...]
2016 - 15 p.
- Published in : Atmosph. Chem. Phys. 16 (2016) 6495-6509
Fulltext: PDF;
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