The climatologists involved in the study took a new approach: they were the first to consider the fact that the atmosphere contains biogenic as well as anthropogenic trace gases and vapours in various mixtures. In their study, they revealed why the amount of aerosols formed in atmospheric mixtures can be significantly smaller than expected from previous laboratory studies.
The insights will lead to a better understanding of the influence that aerosols have on climate and air quality, and will contribute to more precise and thus more reliable climate models – an important prerequisite for better climate protection and improved air quality.
David Simpson and Robert Bergström at the Chalmers division of Microwave and optical remote sensing contributed the global model calculations to the study, which was published in Nature on January 31, 2019.
– With this new knowledge, we will also be able to study how other substances react to each other in different environments. Hopefully it will lead to more accurate calculations of particle impact on climate and air quality, says David.