1. UCAR announces new director of government relations and external engagement

    Pamitha Weerasinghe is joining UCAR from the Union of Concerned Scientists, where he served as the senior manager of government affairs. He previously worked for seven years on the staff of the U.S. House of Representatives Committee on Science, Space, and Technology.

    • Government Relations

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  2. Clouds and lightning.

    Alaska thunderstorms may triple with climate change

    The number of thunderstorms in Alaska may triple by later this century because of climate change, increasing the risks of widespread flash flooding, landslides, and lightning-induced wildfires.

    • Climate,
    • Weather

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  3. Photo of city traffic

    Ozone pollution levels dropped early in pandemic

    Ozone in the lower atmosphere fell by 7% on average across the Northern Hemisphere, new research finds.

    • Air Quality

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  4. Colorado River (photo by M. Thomson).

    Monsoon has limited impact on Colorado mountain streamflow

    As snowpack in the Rocky Mountains declines with climate change, a new study warns that summertime rains are unlikely to significantly bolster stream levels.

    • Water

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  5. Emissions from industrial operations affect visibility. (Image by analogicus from Pixabay.)

    COVID-19 lockdowns temporarily raised global temperatures

    The lockdowns and reduced societal activity related to the COVID-19 pandemic affected emissions of pollutants in ways that slightly warmed the planet for several months last year, according to new research led by NCAR.

    • Climate

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