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Showing 1–5 of 5 results
Advanced filters: Author: Colette L. Heald Clear advanced filters

  • Some aerosol particles—known as ice nuclei—initiate ice formation in clouds, thereby influencing precipitation, cloud dynamics and incoming and outgoing solar radiation. Measurements of the concentration and elemental composition of ice nuclei in the Amazon basin indicate that local bioparticles and Saharan dust could explain the presence of almost all ice nuclei during the wet season.

    • Anthony J. Prenni
    • Markus D. Petters
    • Ulrich Pöschl
    Research
    Nature Geoscience
    Volume: 2, P: 402-405

  • This study shows that climate change has the potential to substantially increase undernourishment rates and threaten food security in developing countries through crop damage, but that ozone regulation can significantly offset climate impacts, depending on the scenario. The findings should help policymakers devise optimal strategies for food production under global climate change.

    • Amos P. K. Tai
    • Maria Val Martin
    • Colette L. Heald
    Research
    Nature Climate Change
    Volume: 4, P: 817-821

  • Atmospheric organic compounds are central to key chemical processes that influence air quality. Concurrent measurements of a wide range of these compounds, including previously unmeasured ones, provide closure on OH reactivity.

    • James F. Hunter
    • Douglas A. Day
    • Jesse H. Kroll
    Research
    Nature Geoscience
    Volume: 10, P: 748-753

  • Stay-at-home policies invoked in response to COVID-19 have led to well-publicized drops in some air pollutants. The extent to which such reductions translate to improved air quality is dictated by not only emissions and meteorology, but also chemical transformations in the atmosphere.

    • Jesse H. Kroll
    • Colette L. Heald
    • Allison L. Steiner
    Comments & Opinion
    Nature Chemistry
    Volume: 12, P: 777-779