Newly-formed particles are important for cloud formation and are persistently observed over almost all regions of Earth’s upper troposphere. However, the vapours and mechanisms that drive the formation of these particles are not understood. Now, a new study by an international team of researchers, including scientists from MISU, published in Nature presents a new mechanism via an unexpected synergy between nitric acid-, sulfuric acid- and ammonia vapours for extremely rapid particle formation and growth that may be an important source of new particles in the upper troposphere. The new findings can inform pollution policies and improve future climate predictions.
When three’s not a crowd: vapour cocktail drives new particle formation in the upper troposphere - Read the full article