Arctic annual maximum ice extent reached

CIRES News

Common factors behind Greenland melt episodes in 2012, 1889

n 2012, temperatures at the summit of Greenland rose above freezing for the first time since 1889, raising questions about what led to the unusual melt episode. Now, a new CIRES-led analysis shows that some of the same weather and climate factors were at play in both 1889 and 2012: heat waves thousands of miles upwind in North America, higher-than-average ocean surface temperatures south of Greenland and atmospheric rivers of warm, moist air that streamed toward Greenland’s west coast. Read More ...

Climate Considerations on Navajo Lands

In the U.S. Southwest, 2001-2010 was warmer than any decade in the 20th century. Heat waves are happening more often, cold waves less. On the Navajo Nation, drought conditions have dominated since 1994, punctuated by brief episodes of wetness, yet there have been even worse droughts in the Southwest in the last 2,000 years. Read More ...

Serving up climate data in usable formats

When a city’s transportation infrastructure needs work, city planners can’t just look at yesterday’s traffic figures, they need to take into account long-term trends: How are driving patterns changing? Roads and mass transit projects last for decades, after all. Read More ...