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.
March 23, 2011
The return of sunlight in polar spring means ozone destruction above the Antarctic—and, in 2011, above the Arctic.
A high-resolution infrared Fourier transform spectrometer is pictured.
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.
December 27, 2010
New research points to more dust particles in the atmosphere than previously believed.
Color illustration of part of Earth and words
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.
October 21, 2010
Deciduous plants absorb about a third more of a common class of air polluting chemicals than previously realized.

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