CLOUD publications

• Measurement–model comparison of stabilized Criegee intermediate and highly oxygenated molecule production in the CLOUD chamber (Sarnela et al., 2018)
• New particle formation in the sulfuric acid–dimethylamine–water system: reevaluation of CLOUD chamber measurements and comparison to an aerosol nucleation and growth model (Kuerten et al., 2018)
• Influence of temperature on the molecular composition of ions and charged clusters during pure biogenic nucleation (Frege et al., 2018)
• The role of ions in new particle formation in the CLOUD chamber (Wagner et al., 2017)
• Intercomparison study and optical asphericity measurements of small ice particles in the CERN CLOUD experiment (Nichman et al., 2017)
• Temperature uniformity in the CERN CLOUD chamber (Dias et al., 2017)
• Causes and importance of new particle formation in the present-day and pre-industrial atmospheres (Gordon et al., JGR 2017), see also commentary
• Comparison of the SAWNUC model with CLOUD measurements of sulphuric acid-water nucleation (Erhart et al., JGR, 2016)
• Experimental particle formation rates spanning tropospheric sulfuric acid and ammonia abundances, ion production rates, and temperatures (Kürten et al., JGR, 2016)
• Unexpectedly acidic nanoparticles formed in dimethylamine–ammonia–sulfuric-acid nucleation experiments at CLOUD (Lawler et al., ACP, 2016)
• Global atmospheric particle formation from CERN CLOUD measurements (Dunne et al., Science, 2016)
• Reduced anthropogenic aerosol radiative forcing caused by biogenic new particle formation (Gordon et al., PNAS, 2016)
• The role of low-volatility organic compounds in initial particle growth in the atmosphere, (Troestl et al., Nature, 2016)
• Ion-induced nucleation of pure biogenic particles, (Kirkby et al., Nature, 2016)
• Heterogeneous ice nucleation of viscous secondary organic aerosol produced from ozonolysis of α-pinene, (Ignatius et al., Atmospheric Chemistry and Physics, 2016)
• The effect of acid–base clustering and ions on the growth of atmospheric nano-particles, (Lehtipalo et al., Nature communication, 2016) see abstract
• Observation of viscosity transition in α-pinene secondary organic aerosol (Järvinen et al., Atmospheric Chemistry and Physics, 2016)
• Phase transition observations and discrimination of small cloud particles by light polarization in expansion chamber experiments (Nichman et al., Atmospheric Chemistry and Physics, 2016)
• Aqueous phase oxidation of sulphur dioxide by ozone in cloud droplets (Hoyle et al., Atmospheric Chemistry and Physics, 2016)
• Effect of ions on sulfuric acid-water binary particle formation II: Experimental data and comparison with QC-normalized classical nucleation theory (Duplissy et al. Journal of Geophysical Research, 2016) See press release
• Effect of ions on sulfuric acid–water binary particle formation I: Theory for kinetic and nucleation-type particle formation and atmospheric implications (Merikanto et al. Journal of Geophysical Research, 2016)
• Hygroscopicity of nanoparticles produced from homogeneous nucleation in the CLOUD experiments (Kim et al., Atmospheric Chemistry and Physics, 2016)
• Thermodynamics of the formation of sulfuric acid dimers in the binary (H₂SO₄-H₂O) and ternary (H₂SO₄-H₂O-NH₃) system (Kürten et al.,Atmospheric Chemistry and Physics, 2015)
• Experimental investigation of ion-ion recombination at atmospheric conditions (Franchin et al, Atmospheric Chemistry and Physics, 2015)
• On the derivation of particle nucleation rates from experimental formation rate (Kürten et al., Atmospheric Chemistry and Physics, 2015)
• Elemental composition and clustering of α-pinene oxidation products for different oxidation conditions (Praplan et al, Atmospheric Chemistry and Physics, 2015)
• On the composition of ammonia-sulfuric acid clusters during aerosol particle formation (Schobesberger et al., Atmospheric Chemistry and Physics, 2015)
• Insight into Acid−Base Nucleation Experiments by Comparison of the Chemical Composition of Positive, Negative, and Neutral Clusters (Bianchi et al., EST, 2014)
• Neutral molecular cluster formation of sulfuric acid–dimethylamine observed in real time under atmospheric conditions (Kürten et al., PNAS, 2014) See the press release
• Oxidation Products of Biogenic Emissions Contribute to Nucleation of Atmospheric Particles (Riccobono et al., Science, 2014) See the press release
• Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules (Schobesberger et al., PNAS, 2013) See the press release
• Molecular understanding of sulphuric acid–amine particle nucleation in the atmosphere (Almeida et al., Nature, 2013) See the press release 
• How do organic vapors contribute to new-particle formation? (Donahue et al., Faraday discussion, 2013)
• Evolution of particle composition in CLOUD nucleation experiments (Keskinen et al., Atmospheric Chemistry and Physics, 2013)
• Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation (Kirkby et al., Nature, 2011) See the press release
• Results from the CERN pilot CLOUD experiment (Duplissy et al., Atmospheric Chemistry and Physics, 2010)

CLOUD Technical publications

• Technical Note: Using DEG CPCs at upper tropospheric temperatures (Wimmer et al, Atmospheric Measurement Techniques, 2015)
• Effect of ions on the measurement of sulphuric acid in the CLOUD experiment at CERN (Rondo et al., Atmospheric Measurement Techniques, 2014)
• Characterisation of organic contaminants in the CLOUD chamber at CERN (Schnitzhofer et al., Atmospheric Measurement Techniques, 2014)
• Methods for determining particle size distribution and growth rates between 1 and 3 nm using the Particle Size Magnifier (Lehtipalo et al., Boreal Environment Research, 2014)
• Performance of diethylene glycol-based particle counters in the sub-3 nm size range (Wimmer et al., Atmospheric Measurement Techniques, 2013)
• On-line determination of ammonia at low ppt_v mixing ratios in the CLOUD chamber (Bianchi et al., Atmospheric Measurement Techniques, 2012)
• Dimethylamine and ammonia measurements with ion chromatography during the CLOUD4 campaign (Praplan et al., Atmospheric Measurement Techniques, 2012)
• Numerical simulations of mixing conditions and aerosol dynamics in the CERN CLOUD chamber (Voigtlander et al., Atmospheric Chemistry and Physics, 2012)
• A fibre-optic UV system for H2SO4 production in aerosol chambers causing minimal thermal effects (Kupc et al., Journal of Aerosol Science, 2011)

CLOUD papers under review (open discussion)