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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.
March 19, 2010
A new study has verified that the Weather Research and Forecasting model can depict seasonal snowfall in Colorado with a high degree of accuracy.
Mountains with snow.
February 25, 2010
The greater Salt Lake City area is known for harboring some of the most polluted air in the country during the winter. A team of NCAR researchers is gearing up to collaborate on a study of the winter weather inversions that cause the city's poor air quality.
Salt Lake City skyline obscured by air pollution.
February 22, 2010
Solar scientists have long debated why the Sun's corona, or atmosphere, is millions of degrees hotter than its surface. Images retrieved by the Hinode satellite, launched in 2006, are shining some light on this paradox.
The Sun's surface.
February 16, 2010
NCAR and university researchers are collaborating with the U.S. Department of Agriculture and Federal Aviation Administration to study how bird-detecting radar at airports could help prevent dangerous airplane bird strikes.
A crane on the broken windshield of a helicoptor.
January 28, 2010
A new study led by NCAR scientist Peter Lawrence has found that impacts to Earth's hydrological cycle are the most important driving force in how land use changes affect climate.
Deforestation in Brazil.
January 14, 2010
A team led by NCAR's Jim Smith has found that aminium salts make up as much as half of the mass of newly formed particles in places as diverse as Atlanta, Mexico City, northeast Colorado, and Finland.
Cattle on a feedlot.
January 10, 2010
The solar minimum that bottomed out from 2006 to 2010 was the longest and deepest since modern space observations began. Among other effects, it reorganized the areas of flux from open magnetic field lines that produce solar wind.
A diagram of the Sun.
January 08, 2010
NCAR scientist Natasha Flyer is using an innovative method known as radial basis function (RBF) to model simple physical processes in the geosciences. The research is poised to offer a new way of solving equations that could significantly improve models used by atmospheric and solar scientists.
Two sperical images side-by-side.
December 10, 2009
A collaboration of scientists that includes UCAR's John Braun is pioneering a new technique for using GPS satellite signals to measure snow depth as well as soil and vegetation moisture.
Marshall Field Site
December 09, 2009
NCAR researchers are increasingly adopting an innovative tool for statistical computing and graphics. Called R, this community software project is the statistics equivalent of the LINUX movement.
A graph showing temperature data.
November 06, 2009
How do people and organizations respond to extreme weather events—in particular, flash floods? Flash floods are already on average the leading cause of weather-related fatalities in the United States and second most common worldwide.
Flooded highway.
October 15, 2009
Preliminary research at NCAR suggests that biological particles may contribute significantly to the mass of organic carbon stored in atmospheric aerosols. The study is an important step for scientists.
Christine Wiedinmyer taking measurements at Storm Peak Laboratory.
October 01, 2009
When it comes to global air pollution, what goes around comes around. Air pollution from factories, traffic, and power plants in Asia wafts over the Pacific Ocean to the United States, while pollutants produced in the United States wind up in Europe.
Map of globe showing carbon monoxide transport.
September 14, 2009
In 2006, a team of NCAR researchers convened in Mexico City for MIRAGE, a study of the chemical and physical transformation of air pollution in urban areas and its impact on air quality, ecosystems, and climate. Another MIRAGE field campaign kicks off this month, this time in Shanghai, China's largest city.
Factories on the shores of the lower Yangtze River in China.
September 10, 2009
The stretch of the subcontinent that runs from eastern Pakistan across northern India into Bangladesh is likely the world's most intensively irrigated region. A new NCAR study shows that between 2002 and 2008, the region depleted groundwater at a rate of around 13 cubic miles per year.
Side-by-side maps of India showing grounwater depletion.
August 27, 2009
A team of NCAR researchers led by Jacob Fugal is developing and testing a specialized instrument that uses digital holography to measure tiny cloud droplets.
HOLODEC 2 installed on Gulfstream V aircraft.
July 28, 2009
A new study led by NCAR scientist David Edwards is the first to apply the concept of Observing System Simulation Experiments to chemical weather (predicting pollution events and variability in the atmosphere’s chemical composition).
Pollution
July 02, 2009
An experimental modeling study by a team of scientists that includes NCAR’s Hanli Liu (High Altitude Observatory) points to the propagation of waves upward from the lower atmosphere as a driver for variability in the ionosphere. The research is an important step toward better understanding space weather.
Cirrocumulus clouds

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