April 10, 2014
Climate change will reduce water availability during dry seasons and increase it during wet seasons around the globe, new research suggests. It also finds there will be large regional variations in water-related impacts.
Water: too much, too little - Image shows effects of major drought on plants across U.S. on June 24, 2011
April 08, 2014
UCAR and the U.N. Foundation have assembled a network of experts who can discuss climate change in communities across the country.
NASA image of Earth from Visible/Infrared Imaging Radiometer Suite (VIIRS), 5/26/12
March 21, 2014
In recent years, spring snow has vanished even more quickly than computer models and climate scientists had expected, posing a research challenge and a potentially serious risk for water supplies.
Early snowmelt risk: Photo of daffodils amid late-winter snow in West Virginia
March 18, 2014
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.
Damage from California mudslides during 1997–98 El Nino
March 12, 2014
Increased Pacific winds are sending excess heat into the deep ocean and likely playing a role in the current hiatus in global warming.
March 04, 2014
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?
Plowing snow in New Hampshire: How do cold winters and climate change intersect?
January 14, 2014
Last week’s Arctic outbreak brought some of the coldest air in decades across the U.S. Midwest and South. But interestingly, it didn’t last as long as historic cold waves of the late 20th century.
Midwest cold wave: Ice fog in frigid air produces sun dogs
January 13, 2014
In parts of California and Oregon, 2013 was the driest calendar year on record, with no sign of relief on the horizon. NCAR scientists are examining how water and energy use intersect across this drought-prone region and how the nexus could evolve in a future climate.
Drought puts California water supply at risk: Photo of Lake Mead, Nevada/Arizona
January 08, 2014
The globally averaged surface air temperature hasn’t risen much in the last 15 years, but new research confirms ample heating of Earth, which becomes evident when looking at certain times of year and in particular locations, including deep in the ocean.
Warming hiatus? Map showing changes in global temperature since late 1970s
January 07, 2014
Leading scientists head to the western tropical Pacific, where storms influence climate worldwide.
Examining the "global chimney" - Photo of towering storm clouds over the Pacific Ocean, Maldives
December 16, 2013
Some Native American communities in Alaska and Louisiana are planning to relocate entire villages because of climate change. What are the obstacles they face?
Moving a vlliage: Aerial view of Kivalina, Alaska, USA
November 01, 2013
Every 1 degree Fahrenheit of future warming will mean a significant reduction in the annual flow of streams that provide water to the city.
Salt Lake City
October 31, 2013
Shading the planet would produce drop in seasonal rains over many regions, new research finds.
September 27, 2013
The Intergovernmental Panel on Climate Change released the first major segment of its new assessment report in Stockholm on September 27. Audio is now available from a teleconference with NCAR scientists and university partners, who discussed the report and took questions from the media.
September 20, 2013
Parts of the central United States may become more prone to summertime drying than earlier thought, based on new simulations of climate change that involve both global and regional climate models.
Drought-parched bed of Teller Lake, east of Boulder, Colorado
August 26, 2013
A grand solar minimum would slow global warming but not stop it.
sunrise over the Atlantic
August 19, 2013
A rare confluence of three atmospheric patterns drove so much precipitation over Australia in 2010 and 2011 that the world’s ocean levels dropped measurably.
flooding in Australia
August 13, 2013
Scientists are zeroing in on microbes that eat carbon in the soil and release it back to the atmosphere, thereby influencing global climate.
August 09, 2013
Levels of carbon dioxide in the atmosphere are fluctuating more than they used to from one season to another, according to observations from the HIPPO field project. This may be a sign of significant changes in northern ecosystems.
NSF/NCAR Gulfstream V research jet during the HIPPO field campaign
July 08, 2013
Drier ski slopes, reduced river flows, and increased wildfires can potentially discourage tourists from coming to Colorado. Should local officials and business leaders do more to plan for these impacts?
Drought and tourism: Photo of dry, cracked lakebed
May 15, 2013
Carbon dioxide concentrations in the atmosphere have crossed a major threshold: 400 parts per million. Here are five key points on how carbon dioxide is affecting Earth’s atmosphere and the role we're playing in it.
Carbon dioxide and the Keeling Curve: depiction of recent trends against blue sky
May 09, 2013
The last month has seen a trail of smashed records across the central United States, as pulse after pulse of cold air careened down the Great Plains. How does this fit into the bigger picture of a warming U.S. climate?
Putting cold in context: Snowfall atop Ozark Mountains, May 4, 2013
April 15, 2013
Forests across western North America have been ravaged by the most extensive bark beetle attacks on record. Scientists are getting a better handle on what comes next—and the answers aren’t as straightforward as they expected.
Mountain pine beetle damage near Grand Lake, Colorado
April 14, 2013
Reducing emissions of four shorter-lived pollutants could slow the annual rate of sea level rise by up to 50 percent.
Photo of rugged coastline
March 21, 2013
A new study by an NCAR researcher shows that small- to moderate-size volcanoes have helped slow down warming over the last decade, while industrial emissions of Sun-blocking sulfur dioxide over Asia have contributed relatively little to the slowdown.
Small volcanoes, big climate impact: Sarychev Volcano

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