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  1. Winter’s stratospheric reach

    Sudden heat-ups of the outer atmosphere are gaining attention for their impacts on communications, but can they be forecast?

    • Sun + Space Weather

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  2. UCAR Magazine

    HiWind indeed

    A balloon-borne instrument sailing in the Arctic stratosphere in June obtained some of the best observations to date on the high-speed, Sun-driven winds that howl through the thermosphere more than 100 kilometers (60 miles) above Earth.

    • Sun + Space Weather

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  3. NASA SDO satellite image: AIA 171 on 2011-07-26 at 22:45:01 UT

    Wave power can drive Sun’s intense heat

    Alfvén waves contain enough energy to heat the corona and drive the solar wind.

    • Sun + Space Weather

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  4. UCAR Magazine

    Could a weaker Sun avert global warming?

    The Sun drives our climate, so a slowdown in solar activity would surely put the brakes on global warming—wouldn’t it? That question percolated through the media following a set of reports from a solar physics meeting.

    • Climate,
    • Sun + Space Weather

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  5. A new model of the Sun’s open magnetic flux

    The solar minimum that bottomed out from 2006 to 2010 was the longest and deepest since modern space observations began. Among other effects, it reorganized the areas of flux from open magnetic field lines that produce solar wind. NCAR postdoctoral researcher Liang Zhao is using data from the last two minima to revise a model of how open magnetic flux is transported through the solar atmosphere.

    • Sun + Space Weather

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