Dexian Chen

TL;DR: How NOx suppresses particle formation is shown, while HOMs, sulfuric acid, and NH3 have a synergistic enhancing effect on particle formation, elucidate the complex interactions between biogenic and anthropogenic vapors in the atmospheric aerosol system.

TL;DR: Measurements in the CLOUD chamber at CERN show that the rapid condensation of ammonia and nitric acid vapours could be important for the formation and survival of new particles in wintertime urban conditions, contributing to urban smog.

TL;DR: The growth rates are sensitive to particle curvature, explaining widespread atmospheric observations that particle growth rates increase in the single-digit-nanometer size range, and demonstrate that organic vapors can contribute to particle growth over a wide range of tropospheric temperatures from molecular cluster sizes onward.

TL;DR: Iodic acid (HIO3) is known to form aerosol particles in coastal marine regions, but predicted nucleation and growth rates are lacking as discussed by the authors Using the CERN CLOUD (Cosmics Leaving Outdoor Droplets) chamber, they find that the nucleation rates of HIO3 particles are rapid, even exceeding sulfuric acid-ammonia rates under similar conditions.

TL;DR: Measurements of particle-phase abundance and volatility of oxidation products following the reaction of aromatic hydrocarbons with OH radicals confirm that oxidation products of toluene and naphthalene can contribute to the initial growth of newly formed particles.