Just Published

April 06, 2011
An international team of astronomers that includes NCAR’s Savita Mathur has observed mixed waves—a mixture of acoustic and gravity waves—that run all the way to the cores of red giant stars. Astronomers already knew that such waves (known as stellar oscillations) existed, but until now had only observed pure acoustic waves traveling through the outer parts of stars.
A cut-out image of the Sun showing its core.
March 02, 2011
New research indicates that a regional nuclear war would deplete Earth’s protective ozone layer so profoundly that levels of ultraviolet radiation across the world would exceed levels now considered extreme.
Map of the world with colors indicating UV indices.
March 01, 2011
A study led by NCAR postdoctoral researcher Jia Hu and Julia Klein from Colorado State University looks at the relationship between plants, water, carbon, and climate on the Tibetan Plateau, which is warming at a rate twice that of the global average.
The skull of a yak with prayer flats on it and a lake and mountains behind
February 23, 2011
A case study from NCAR looks at how coastal residents assessed their risks and made decisions leading up to Hurricane Ike.
Debris on streets.
February 22, 2011
Last year, a team of NCAR scientists verified that the Weather Research and Forecasting model (WRF) can be used to depict seasonal snowfall in Colorado with a high degree of accuracy. Now the team is using WRF to forecast future snowfall.
Mountains covered in snow.
February 22, 2011
A new study from NCAR uses an innovative computer model to investigate events called sudden stratospheric warmings (SSWs) in the Arctic atmosphere. The study focuses on how two atmospheric patterns based in the tropics, the El Niño–Southern Oscillation and Quasi-Biennial Oscillation, affect SSWs.
A diagram showing the layers of Earth's atmoshere.
February 15, 2011
A new NCAR study compares two different methods for forecasting power production at wind farms: turbine-based versus farm-based.
Wind turbines at sunset.
February 10, 2011
A new study by NCAR scientists looks at the accuracy of snow gauges. Making accurate measurements of snowfall is critical for weather forecasting, climate studies, and hydrology. But a combination of snow gauge geometry and weather conditions can lead to systematic measurement errors.
A close-up image of a snowflake.
January 18, 2011
Geoengineering our climate system to ward off the effects of global warming may end up cooling the tropics to below present-day levels.
Vibrant green tropical forest.
December 23, 2010
The impacts of the Antarctic ozone hole extend upward as well as downward, according to a new modeling study from a team of NCAR scientists.
A dark sky with blue clouds on the horizon.
November 30, 2010
A team of scientists is tackling a scenario that is the stuff of Hollywood thrillers: What happens if a medium-sized asteroid strikes Earth? In particular, what if it crashes into the ocean? The question is not fanciful.
A gray, pock-marked asteroid in space.
November 04, 2010
Crop yields are affected by many factors, including breeding, management, and climate. New research from NCAR seeks to better understand these factors and their contributions to historical yield increases, in order to anticipate future changes.
A close-up shot of corn stalks.
October 28, 2010
The wolverine is known for its strength and ferocity, but these qualities cannot protect it from a warming world. NCAR research suggests that this aggressive predator may struggle to survive in the contiguous United States over the coming century.
A wolverine walking across the snow, its coat glinting in the sun.
October 18, 2010
A team of NCAR scientists is studying how advanced satellite technology that measures lightning could help protect aircraft from turbulence caused by severe weather.
Lightning flashing from clouds down to the ground.
October 06, 2010
El Niño and La Niña are counterparts in the El Niño-Southern Oscillation (ENSO), a cyclic warming and cooling of the eastern and central Pacific Ocean that exerts a major influence on global weather patterns, but they are not mirror images.
Ocean waves rolling into shore.
September 09, 2010
A team of scientists led by NCAR’s Keith Oleson has incorporated urban areas into a global climate model. The development is important because most models used for predicting future climate change do not account for the urban “heat island” effect.
Two satellite views of Atlanta that show urban heat island effect.
September 08, 2010
On December 20, 2008, a Boeing 737 with Continental Airlines encountered a crosswind gust during takeoff at Denver International Airport, causing it to veer off the runway. Simulations done at NCAR indicate that a mountain lee wave amplified over DIA within minutes of the accident.
Lenticular clouds at sunset over the Front Range.
August 25, 2010
NCAR scientists are collaborating with the Centers for Disease Control and Prevention to help fight plague in Uganda. Plague is believed to have been responsible for the Black Death pandemic that swept Europe in the 14th century, killing more than 25 million people.
Two rats crawling in a house.
August 18, 2010
A windstorm that swept across Kansas, Missouri, and Illinois on May 8, 2009, was so remarkably fierce that NCAR scientists coined a new term to describe it: super derecho.
Two images side by side, the first from radar and the second from the WRF model.
July 27, 2010
A turbulence warning system alerting pilots landing at and departing from Juneau International Airport in southeast Alaska has taken a significant step toward completion with the integration of Federal Aviation Administration radio communications into the system.
Photo of mountains and ocean around Juneau, taken from the air.
June 17, 2010
In the spring of 2009, researchers on the Second Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX2) field project set out across the Great Plains to study tornadoes, but that’s not the only phenomenon they observed.
A truck driving down an empty highway with a menacing storm in the background.
June 09, 2010
Cirrus clouds—thin strands or sheets usually composed of ice crystals—form high in the atmosphere. A new study led by NCAR scientist Steve Massie employs satellite technology to observe the clouds in greater detail than before.
Thin, wispy cirrus clouds in the sky.
May 20, 2010
A study led by NCAR visiting scientist Erich Fischer analyzes regional climate simulations to project where heat-wave-related health risks will increase in Europe as Earth’s climate warms.
A map of western Europe with hotter areas in red and orange.
May 11, 2010
After a very unusual tornado caused extensive damage along a 34-mile (55-kilometer) swath of northern Colorado in 2008, a team of scientists from NCAR and Colorado State University undertook a multidisciplinary study integrating meteorology, climatology, and social science.
Radar image of Windsor tornado.
May 06, 2010
A study that includes NCAR scientists suggests that plant leaves emit far less methane when exposed to sunlight than previously thought. The research estimates that foliage is the source of less than 1% of Earth’s methane emissions.
A rainforest in Tasmania, Australia, with dense green foliage.

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