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Latest Black carbon Stories

584ddb2a6a4c8dc968142cc5c43798ce
2010-05-04 07:27:48

Trees and other plants help keep the planet cool, but rising levels of carbon dioxide in the atmosphere are turning down this global air conditioner. According to a new study by researchers at the Carnegie Institution for Science, in some regions more than a quarter of the warming from increased carbon dioxide is due to its direct impact on vegetation. This warming is in addition to carbon dioxide's better-known effect as a heat-trapping greenhouse gas. For scientists trying to predict global...

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2010-05-02 07:57:56

NSF-supported climate scientist Mark Flanner and colleagues find differences in the rates for spring warming and snow cover decline in Eurasia and North America, and are studying whether aerosols are a key factor Over the past 30 years, springtime snow melt and warming appear to be proceeding at a faster rate in Eurasia than in North America. Climate scientist Mark Flanner, an assistant professor at the University of Michigan and a recent Advanced Study Program graduate at the National...

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2010-04-22 16:00:00

Pollen counts are hovering at record levels in the United States. A massive plume of ash "” released by a volcano with a tongue-twister of a name "” is causing havoc across Europe. Parts of the Himalayas are bathed in soot levels comparable to those found over major cities. Details about all of those events "” and much more "” are available from the Smog Blog, a website that monitors air pollution much like meteorologists track the daily weather. The blog, managed by...

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2010-03-18 09:15:50

Such burns release less carbon dioxide than wildfires, scientists find The use of prescribed burns to manage western forests may help the United States reduce its carbon footprint. Results of a new study find that such burns, often used by forest managers to reduce underbrush and protect bigger trees, release substantially less carbon dioxide emissions than wildfires of the same size. "It appears that prescribed burns can be an important piece of a climate change strategy," says Christine...

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2010-02-04 08:50:00

The fact that glaciers in the Himalayan mountains are thinning is not disputed. However, few researchers have attempted to rigorously examine and quantify the causes. Lawrence Berkeley National Laboratory scientist Surabi Menon set out to isolate the impacts of the most commonly blamed culprit"”greenhouse gases, such as carbon dioxide"”from other particles in the air that may be causing the melting. Menon and her collaborators found that airborne black carbon aerosols, or soot,...

2010-01-27 16:39:16

CORVALLIS, Ore. "“ A recent study at Oregon State University indicates that some past approaches to calculating the impacts of forest fires have grossly overestimated the number of live trees that burn up and the amount of carbon dioxide released into the atmosphere as a result. The research was done on the Metolius River Watershed in the central Oregon Cascade Range, where about one-third "“ or 100,000 acres "“ of the area burned in four large fires in 2002-03. Although...

ca50cc31a5dbfeeae1b39e2018f511341
2009-12-15 06:55:00

Soot from fire in an unventilated fireplace wafts into a home and settles on the surfaces of floors and furniture. But with a quick fix to the chimney flue and some dusting, it bears no impact on a home's long-term environment. A new modeling study from NASA confirms that when tiny air pollution particles we commonly call soot "“ also known as black carbon "“ travel along wind currents from densely populated south Asian cities and accumulate over a climate hotspot called the...

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2009-12-15 06:45:00

Black soot deposited on Tibetan glaciers has contributed significantly to the retreat of the world's largest non-polar ice masses, according to new research by scientists from NASA and the Chinese Academy of Sciences. Soot absorbs incoming solar radiation and can speed glacial melting when deposited on snow in sufficient quantities. Temperatures on the Tibetan Plateau -- sometimes called Earth's "third pole" -- have warmed by 0.3°C (0.5°F) per decade over the past 30 years, about...

2009-12-14 16:19:00

GREENBELT, Md., Dec. 14 /PRNewswire-USNewswire/ -- A NASA-led study has found new evidence that a "heat pump" effect, driven by emissions of soot, or black carbon, contributes as much (or more) to atmospheric warming in the Himalayas as greenhouse gases. This warming fuels the melting of glaciers and could threaten fresh water resources in a region that is home to more than a billion people. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Tiny, dark-colored aerosols --...

2009-12-14 15:57:00

WASHINGTON, Dec. 14 /PRNewswire-USNewswire/ -- Black soot deposited on Tibetan glaciers has contributed significantly to the retreat of the world's largest non-polar ice masses, according to new research by scientists from NASA and the Chinese Academy of Sciences. Soot absorbs incoming solar radiation and can speed glacial melting when deposited on snow in sufficient quantities. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Temperatures on the Tibetan Plateau --...


Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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