Montzka in a snow pit in Antarctica

Some of the chemicals that replaced ozone-harming CFCs are long-lived greenhouse gases. At NOAA's lab in Boulder, Colorado, chemist Steve Montzka leads the effort to monitor the concentration of CFC-substitutes and their potential impact on global warming.

While many of us were wrapped up in March Madness this spring, Alaska residents and people across the globe participated in a different kind of competition.

The extreme atmospheric pressure pattern that favored record-breaking snow totals across parts of the U.S. East left Alaskans asking, “Where’s winter?”

 

Ocean scientists have designed a new aquatic robot that can go where they suspect some of the heat energy from global warming is hiding: in the abyss.

(animation) The Lower 48 United States was 0.5°F above average in 2014, making it the 34th warmest year in the historical record (1895-2014).  It was the 18th year in a row with above-average temperature.

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