1. Damage from California mudslides during 1997–98 El Nino

    El Niño or La Nada?

    Why seasonal forecasting can’t tell us with certainty what to expect this summer—and why we might soon have a stronger sense of what late 2014 and early 2015 are likely to bring to large parts of the globe.

    • Climate,
    • Weather

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  2. Stronger trade winds stall climate change

    Increased Pacific winds are sending excess heat into the deep ocean and likely playing a role in the current hiatus in global warming.

    • Climate

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  3. Plowing snow in New Hampshire: How do cold winters and climate change intersect?

    It was so cold! (How cold was it?)

    How does the U.S. winter of 2013–14 rank against its predecessors? And was it a harbinger of more cold winters to come for parts of the country, or simply an outlier at a time of largely warming winters?

    • Climate,
    • Weather

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  4. Arctic sea ice: Regional nuclear conflict could lead to extended global cooling

    Regional nuclear war would have global reach

    A nuclear exchange, even if limited to one region, would have severe atmospheric impacts.

    • Air Quality

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  5. Pollution above Asia: Layer in stratosphere may originate from global sources

    Stratospheric sulfates have human cause

    Scientists link coal, oil, and biomass to a layer of sulfates high above Asia.

    • Air Quality

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