Just Published

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
June 08, 2009
NCAR researchers are studying whether the eruption of Indonesia’s Mt. Toba supervolcano about 70,000–75,000 years ago may have cooled Earth enough to initiate an ice age and potentially alter the course of human evolution.
A satellite image.
May 20, 2009
A new technique developed at NCAR will help asteroseismologists learn about stars from their oscillations, or “starquakes.” These variations in the brightness of stars reveal information about their internal structures.
Kepler satellite orbiting the Sun
May 11, 2009
One of the challenges for global climate modelers is accurately simulating cloud cover and its changes over time. This is vital for projecting future temperatures, rainfall, and other aspects of global and regional climate change.
Aerial photo of cumulus clouds
May 07, 2009
Using a highly efficient modeling technique, Pablo Ortiz (University of Granada) and Piotr Smolarkiewicz (ESSL/MMM) have simulated the role of winds in forming sand dunes and sandholes.
Sand dunes in the Atacama Desert
April 14, 2009
NCAR researchers are looking at how new generations of super-fast Graphical Processing Units (GPUs) and multicore chips, such as the Cell Broadband Engine, can be used in atmospheric models.
Sky with towering cumulus clouds

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