The NSF NCAR Mesa Lab is closed today, Jan. 26, due to a power outage.

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  1. The far-reaching Madden-Julian Oscillation

    A new study led by NCAR’s Wei Yu and CU-Boulder’s Weiqing Han looks at the effects of the Madden-Julian Oscillation (MJO), the largest source of intraseasonal (within one season) variability in the tropics, causing wet and dry periods to alternate.

    • Climate,
    • Weather

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  2. UCAR Magazine

    How deep the snow?

    The surfeit of snowfalls across the U.S. East Coast over the last two winters brought ample evidence of just how much the white stuff can vary from place to place—and how difficult it is to assess accurately.

    • Weather

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  3. UCAR Magazine

    Recipe for calamity: The ingredients of a horrific tornado outbreak

    How could a tornado outbreak kill more than 200 people? Several factors—meteorological, geographical, and sociological—came together in a rare and deadly way.

    • Weather

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