August 13, 2014
For millions of people, El Niño or La Niña indicates whether they’re likely to face unusually warm, cold, wet, or dry conditions over the coming winter. A new modeling study pins down the process that apparently determines why La Niña events often last twice as long as typical El Niño events—a result with major implications for seasonal predictions.
Sea surface temperatures during 2007–08 La Niña
July 30, 2014
Known from their frequent film and TV appearances, the large, charismatic birds are in danger. By 2100, according to a new study, their numbers will have fallen by around 19% and will continue to decline, qualifying the species for endangered status.
Penguins and climate change: emperor penguins and chicks at Snow Hill Island, Antarctica, October 2009
July 25, 2014
The world faces a small but substantially increased risk over the next two decades of a major slowdown in the growth of global yields of corn and wheat because of warming temperatures.
Crops and climate change: Wheat ripens in a California field
June 25, 2014
California will likely experience more large fires in forested areas this century because of rising temperatures and changes in precipitation along with development patterns, new research finds. The blazes could increase some types of fire-generated air pollution by more than half.
Pollution, fires, warming west: A fire burns on Camp Pendleton, California
June 03, 2014
Researchers are finding new ways to work with aspects of climate change that are surprisingly linear, an approach that could help save time and money in future climate research while providing a richer range of information to help guide policy.
Climate simulations for late 21st-century temperature from different scenarios: IPCC AR5, Ch. 12, FAQ 12.1
May 21, 2014
A field project this June and July will study gravity waves, towering atmospheric features little-known to the public. Novel instruments to be deployed for the international DEEPWAVE project, based in New Zealand, will provide an unprecedented view of gravity waves, a major shaper of atmospheric variability at multiple heights.
Effects of gravity waves: Noctilucent clouds over Helsinki, Finland, on July 2, 2012
May 14, 2014
El Niño exerts its global impact through two different atmospheric pathways, one located miles above the other—a finding that may help bolster regional climate prediction.
El Niño’s high-altitude highway: Map showing temperature anomalies during El Niño and La Niña years with sudden stratospheric warmings, 1958-2013
May 07, 2014
Geophysical Research Letters, a leading journal in Earth science, is toasting its 40th anniversary this month with an editor-picked retrospective collection of 40 papers, including several with authors from NCAR.
Photo of NCAR scientist Marika Holland explaining changes in Arctic sea ice extent
May 05, 2014
Americans face the risk of a 70 percent increase in unhealthy summertime ozone events by 2050 because of factors related to climate change.
Hazy skies in Los Angeles as viewed from the Getty Center, 3/18/08
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

Pages

Subscribe to