Quantcast

Latest Black carbon Stories

c5a9045ed72c3e26a699f138bd1131cf1
2008-04-28 14:30:00

A handful of soil is a lot like a banana, strawberry and apple smoothie: Blended all together, it is hard to tell what's in there, especially if you have never tasted the fruits before.But when you look at soil's organic carbon closely, it has an incredible variety of known compounds. And looking closely is exactly what Cornell researchers have done for the first time -- at a scale of 50 nanometers (1 nanometer equals the width of three silicon atoms). Until now, handfuls of soil humus (or...

2008-04-07 16:43:41

Black carbon, the stuff that gives soot its dirty color, could be the second most important contributor to climate change after carbon dioxide and a key to preventing warming, at least in the short-run, a new study suggests. Black carbon is a type of aerosol - a small particle suspended in the atmosphere - that is produced in diesel exhaust and when wood, coal or other types of solid fuel are burned. Like other aerosols, soot particles absorb and scatter the sun's radiation; black...

6f2d05f89847f79faa49d7095973446b1
2008-03-24 12:05:00

Soot from biomass burning, diesel exhaust has 60 percent of the effect of carbon dioxide on warming but mitigation offers immediate benefitsBlack carbon, a form of particulate air pollution most often produced from biomass burning, cooking with solid fuels and diesel exhaust, has a warming effect in the atmosphere three to four times greater than prevailing estimates, according to scientists in an upcoming review article in the journal Nature Geoscience.Scripps Institution of Oceanography at...

67a234013e190a66ebd418019144d8cd1
2007-11-20 16:51:33

A new NASA study estimates that most ground-level particulate pollution in the United States stems from regional sources in North America and only a small amount is brought to the country from other parts of the world. Researchers using an innovative global aerosol tracking model have for the first time produced a global estimate of sources and movements of aerosols near the ground where they can affect human health and run afoul of environmental regulations. Previously, researchers studying...

6368d8a14e6552babc7351ea6d62bd161
2007-05-26 17:20:00

NEW YORK -- Bold new initiatives against global warming have come out of major cities around the world over the past few weeks - with the notable exception of Washington. Meeting in New York this month, dozens of big-city mayors from six continents competed to present the most ambitious plan for reducing emissions of carbon dioxide and other gases that cause global warming. New York Mayor Michael Bloomberg touted his new 127-point plan to cut Gotham's emissions 30 percent by 2030. Los Angeles...

b9ad205520cb5159196ca26b9e2dd6e11
2007-01-31 08:14:25

Pinpointing pollutant sources is an important part of the ongoing battle to improve air quality and to understand its impact on climate. Scientists using NASA data recently tracked the path and distribution of aerosols -- tiny particles suspended in the air -- to link their region of origin and source type with their tendencies to warm or cool the atmosphere. By altering the amount of solar energy that reaches the Earth's surface, aerosols influence both regional and global climate, but...

2006-11-28 08:01:37

SYDNEY, Australia -- The rate at which humans are pumping carbon dioxide into the atmosphere has more than doubled since the 1990s, according to Australian research, the latest report warning about the high rate of emissions accumulating in the atmosphere. Findings published by Australia's Commonwealth Scientific and Industrial Research Organization also showed that 2005 marked the fourth-consecutive year of increased carbon dioxide emissions. "To have four years in a row of above-average...

f4d9e2ec6f79aaa9d3be93b9645fda761
2006-09-07 15:40:00

Who would think that something like dust in the air could trigger rain? According to a new NASA study, this is just what's happening over South Asia's Tibetan Plateau. Very small dust particles called aerosols blow in from desert regions and collect in the atmosphere over the plateau's slopes early in the region's monsoon season, helping trigger rainfall. A monsoon is a seasonal shift in wind direction that alternately brings very wet and then very dry seasons to India and much of Southeast...

2006-06-26 09:18:26

WASHINGTON (Reuters) - The Supreme Court said on Monday it would hear an appeal by a dozen states, three cities and a number of environmental groups seeking to force the U.S. government to regulate carbon dioxide emissions from cars and trucks. The justices agreed to review a U.S. appeals court ruling that the U.S. Environmental Protection Agency does not have to regulate the vehicle emissions blamed by most scientists for global warming.

52202a4c79545ecb5e769e54babbe0d81
2006-03-14 15:55:00

By Deborah Zabarenko WASHINGTON -- Ozone pollution in the Northern Hemisphere, churned out by factories and vehicles that burn fossil fuels, is a major factor in the dramatic warming of the Arctic zone, NASA climate scientists reported on Tuesday. This finding is surprising, since ozone has been considered a minor player in the study of global climate change, according to Drew Shindell, a research scientist at NASA's Goddard Institute for Space Studies in New York City. Carbon dioxide has...


Word of the Day
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
Related