August 26, 2014
An estimated 40 percent of the world's waste is burned in unregulated fires, emitting pollutants that can harm human health and the environment.
Trash burning and air pollution: open trash fire in General Santos, Philippines
July 15, 2014
Researchers at NCAR and partner organizations this summer are using aircraft, ground-based sensors, computer models, and other tools to track the origins of summertime ozone, a significant health threat.
Assessing air quality from above: NSF/NCAR C-130 aircraft in flight
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 24, 2014
A new grant will help researchers measure pollution from open-fire cooking and better understand a problem that kills millions of women and children in developing countries.
Cookstoves and air quality: A rural stove using biomass cakes, fuelwood and trash as cooking fuel
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
March 03, 2014
A nuclear exchange, even if limited to one region, would have severe atmospheric impacts.
Arctic sea ice: Regional nuclear conflict could lead to extended global cooling
February 19, 2014
Scientists link coal, oil, and biomass to a layer of sulfates high above Asia.
Pollution above Asia: Layer in stratosphere may originate from global sources
June 19, 2013
The five-project field campaign looks at unique features affecting air quality and climate in the region.
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
February 04, 2013
A team of researchers, including NCAR scientist Carl Schmitt, are climbing high in the Peruvian Andes to assess the extent to which the white ice is being darkened by ash and other particulates that are emitted by nearby industrial operations. The dark particles can accelerate glacial melting, eventually threatening runoff that supplies water for millions of South American residents.
Andean glacier melt - NCAR scientist Carl Schmitt on a Peruvian glacier.
January 24, 2013
Much of the United States has felt winter’s bite this week, with fresh but frigid cold to the east and a weeks-long spell of stagnant, polluted chill to the west.
Inversion over Salt Lake City, January 2011, related to persistent cold and pollution events
November 01, 2012
NCAR scientists are leading a three-year, international study into the impact of open-fire cooking on regional air quality and disease.
Cooking over an open fire in Ghana.
October 08, 2012
First in the queue for the NCAR-Wyoming Yellowstone system is a set of 11 computing-intensive projects tackling major problems in Earth and atmospheric science.
Close-up depiction of solar turbulence
October 04, 2012
Scientists are analyzing results from a project that pulled together chemists, radar experts, cloud physicists, forecasters, pilots, and other specialists to investigate the evolution of thunderstorms.
UCAR Magazine
July 11, 2012
Sulfate gases emitted by the Nabro volcano boosted stratospheric particles and gas across the entire Northern Hemisphere in 2011.
Volcano: Mt. St. Augustine, Alaska
April 16, 2012
After an earthquake and tsunami damaged the Daiichi nuclear power plant in Fukushima, Japan, on March 11, 2011, an unknown quantity of radioactive material was released into the surrounding air and sea.
A map showing the coast of Japan.
February 07, 2012
Atmospheric carbon dioxide has been increasing fairly steadily for decades, but methane has accumulated at a more erratic pace. The increase virtually stalled for much of the last decade before resuming after 2007.
UCAR Magazine
October 03, 2011
A team that includes NCAR scientists Anne Boynard and Alex Guenther has found that the rate at which plant canopies emit isoprene, a volatile organic compound, is influenced by circadian rhythms.
Rain forest with lots of large ferns in the foreground.
September 07, 2011
The HIPPO field project is enabling researchers to generate the first detailed 3-D mapping of the global distribution of gases and particles that affect Earth’s climate.
June 28, 2011
Hazy skies and fiery sunsets were noted across much of the central United States after the huge Wallow Fire developed in Arizona. But there’s also a quantitative way to track fire’s impact on the surrounding air.
UCAR Magazine
June 07, 2011
New research focusing on the Houston area suggests that widespread urban development alters weather patterns in a way that can make it easier for pollutants to accumulate during warm summer weather instead of being blown out to sea.
June 06, 2011
The air in the vicinity of Earth’s biggest urban areas includes a wild variety of constituents emitted by cars, factories, trees, and much more. Tracking the fate of such air as it spreads outward is no simple task.
Pollution over Mexico City
May 06, 2011
A group of five master’s and doctoral students from North Carolina Agricultural and Technical State University broke new ground this semester as they learned from top researchers halfway across the United States.
Geoff Tyndall and Stephany Taylor
April 18, 2011
A new study looks at how the anticipated recovery of the ozone hole over Antarctica and simultaneous increase in greenhouse gas concentrations will combine to affect weather and climate in the Southern Hemisphere.
A map of the globe with atmospheric circulation patterns labeled.

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