63 research outputs found

    Multicomponent new particle formation from sulfuric acid, ammonia, and biogenic vapors

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    A major fraction of atmospheric aerosol particles, which affect both air quality and climate, form from gaseous precursors in the atmosphere. Highly oxygenated organic molecules (HOMs), formed by oxidation of biogenic volatile organic compounds, are known to participate in particle formation and growth. However, it is not well understood how they interact with atmospheric pollutants, such as nitrogen oxides (NOx) and sulfur oxides (SOx) from fossil fuel combustion, as well as ammonia (NH3) from livestock and fertilizers. Here, we show how NOx suppresses particle formation, while HOMs, sulfuric acid, and NH3 have a synergistic enhancing effect on particle formation. We postulate a novel mechanism, involving HOMs, sulfuric acid, and ammonia, which is able to closely reproduce observations of particle formation and growth in daytime boreal forest and similar environments. The findings elucidate the complex interactions between biogenic and anthropogenic vapors in the atmospheric aerosol system.© 2018 The Author

    Dynamical accretion flows

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    VizieR online Data Catalogue associated with article published in journal Astronomy and Astrophysics with title ' Dynamical accretion flows. ALMAGAL: Flows along filamentary structures in high-mass star-forming clusters.' (bibcode: 2024A&A...690A.185W

    Rapid growth of new atmospheric particles by nitric acid and ammonia condensation: data resources

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    Data presented in the manuscript "Rapid growth of new atmospheric particles by nitric acid and ammonia condensation" currently in review. The manuscript associated with this data was written using results from the CLOUD experiment at CERN, and the author list is a subset of the CLOUD collaboration
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