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Showing 1–10 of 10 results
Advanced filters: Author: Ottmar Möhler Clear advanced filters

  • Mineral dust and biological particles of terrestrial origin initiate ice formation in the atmosphere. Laboratory experiments suggest that ocean diatoms are another potential source of ice nuclei in clouds.

    • Ottmar Möhler
    • Corinna Hoose
    News & Views
    Nature Geoscience
    Volume: 4, P: 76-77

  • Experiments performed in the CERN CLOUD chamber show that, under upper-tropospheric conditions, new atmospheric particle formation may be initiated by the reaction of hydroxyl radicals with isoprene emitted by rainforests.

    • Jiali Shen
    • Douglas M. Russell
    • Xu-Cheng He
    ResearchOpen Access
    Nature
    Volume: 636, P: 115-123

  • Atmospheric particles are thought to initiate the majority of terrestrial precipitation. Field-based measurements of ice-crystal residues, together with controlled environment experiments on artificial clouds, suggest that anthropogenic lead-containing particles are among the most efficient ice-forming substances in the atmosphere.

    • Daniel J. Cziczo
    • Olaf Stetzer
    • Ulrike Lohmann
    Research
    Nature Geoscience
    Volume: 2, P: 333-336

  • Ice clouds in the tropical tropopause layer have a key role in dehydrating air that is entering the stratosphere. Cloud-chamber measurements suggest that their high humidity can be explained if heterogeneous ice nucleation on glassy aerosols is a significant nucleation mechanism in this region.

    • Benjamin J. Murray
    • Theodore W. Wilson
    • Bernd Kärcher
    Research
    Nature Geoscience
    Volume: 3, P: 233-237

  • The growth of nucleated organic particles has been investigated in controlled laboratory experiments under atmospheric conditions; initial growth is driven by organic vapours of extremely low volatility, and accelerated by more abundant vapours of slightly higher volatility, leading to markedly different modelled concentrations of atmospheric cloud condensation nuclei when this growth mechanism is taken into account.

    • Jasmin Tröstl
    • Wayne K. Chuang
    • Urs Baltensperger
    ResearchOpen Access
    Nature
    Volume: 533, P: 527-531