Clouds are formed from water droplets that form in the atmosphere around fine particles called aerosols. Air pollutants contribute significantly to the formation of these aerosols. A team from the Institut de physique des 2 infinis de Lyon (IP2I ‒ Université Claude Bernard Lyon 1 / CNRS) in collaboration with researchers in Grenoble, Austria and Japan, has just discovered a hitherto unknown process in which the first steps in the formation of atmospheric aerosols are promoted by the presence of pyridine. This molecule produced in abundance by human activity thus influences the formation of clouds and therefore the climate. The work is reported in PNAS.
Read the research paper: Impact of a hydrophobic ion on the early stage of atmospheric aerosol formation. Linda Feketeová, Paul Bertier, Thibaud Salbaing, Toshiyuki Azuma, Florent Calvo, Bernadette Farizon, Michel Farizon and Tilmann D. Märk. PNAS