CLOUD-project: Nitric acid may influence the formation of aerosol particles in the upper troposphere

The chamber at CERN where measurements were conducted (Image: Hanna Manninen)

A new mechanism was discovered in a study published in the journal Nature, which suggests that nitric acid, sulphuric acid and ammonia can together form aerosol particles and ice nuclei much more efficiently than previously understood. This mechanism is thought to be particularly significant in the cold environments.

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