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Arctic annual maximum ice extent reached

CIRES News

End of an Era: Northern Hemisphere Losing Its Last Dry-Snow Region

Last July, something unprecedented in the 34-year satellite record happened: 98 percent of the Greenland Ice Sheet’s surface melted, compared to roughly 50 percent during an average summer. Snow that usually stays frozen and dry turned wet with meltwater. Read More ...

Mystery Solved: Previously Unexplained Higher Levels of Greenhouse Gas in L.A. from Fossil-Fuel Sources

The missing link—exactly where the extra methane, a powerful greenhouse gas, is coming from in Los Angeles—has finally been identified, according to a study led by a scientist at NOAA’s Cooperative Institute for Research in Environmental Sciences (CIRES). Read More ...

The origins of cirrus: Earth’s highest clouds have dusty core

The thin, wispy clouds known as “cirrus” cover nearly a third of the globe and are found high in the atmosphere—5 to 10 miles above the surface. But a new study shows that they typically have a very down-to-earth core, consisting of dust and metallic particles. Read More ...