1. Researchers prepare radiosonde for launch

    Snow gaze

    The giant comma-shaped storm systems that traverse the Midwest from fall through spring carry more than a few secrets. Radar, lidar, and profiler beams are now slicing through those storms, hunting for small-scale features that normally go unobserved.

    • Weather

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  2. AO index for September 2009-January 2010

    Brrr: The AO is way low

    No matter how you slice it, the last few weeks have been consistently wintry across large chunks of North America and Eurasia.

    • Climate,
    • Weather

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  3. Flash floods and human response

    How do people and organizations respond to extreme weather events—in particular, flash floods? Flash floods are already on average the leading cause of weather-related fatalities in the United States and second most common worldwide.

    • Weather

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  4. Drizzle never dampens her day

    Dione Lee Rossiter, University of California, Santa Cruz • This Ph.D. student studies clouds, especially over the subtropical ocean—the area just north and south of the tropics. She's interested in their invisible physical changes, or microphysics, and a whole lot more.

    • Weather

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  5. A W-band radar capturing the end stages of the 5 June tornado

    Rounding up severe weather

    This spring the second Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX2, or V2) captured one tornado in unprecedented detail, as well as a number of potentially tornadic thunderstorms that never made the grade.

    • Weather

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