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Latest Sulfate aerosols Stories

2014-01-29 13:23:33

Air pollution in China has exhibited noticeable changes over the past 30 years, shifting from point-source pollution (around factories and industrial plants) in the 1980s to urban pollution in the 1990s. Since the start of this century, air pollution has become increasingly regional and more complex. Recent research has indicated that the cooperative transition of SO2 and NOx into secondary aerosols (sulfate and nitrate) played a critical role in the haze pollution episode in China in January...

Sulfur Aerosol Particles And Climate Change
2013-05-15 04:51:08

Brett Smith for redOrbit.com - Your Universe Online A new study on cloud formation shows that climate change models may have underestimated the cooling effect of sulfur aerosol particles in the atmosphere. These aerosols mitigate greenhouse gases by reflecting sunlight. They also act as seeds for cloud condensation by allowing humidity to accumulate around them — forming droplets and then clouds. To investigate the role of sulfur aerosols in cloud formation and climate change,...

New Study May Hold Clue To Proving the Gaia Theory
2012-05-18 04:30:16

The Gaia Hypothesis proposes that the Earth is actually a giant living organism, and a University of Maryland (UMD) study might have found the key to unlocking this mystery, and this discovery could lead to an improved understanding of the climate and changes that occur within it. The key is sulfur, and researchers hope to find the relationships between the atmosphere, ocean organisms, and land, using sulfur in order to prove the Gaia Theory. The Gaia Theory was first introduced in the...

2011-01-11 12:09:00

EL SEGUNDO, Calif., Jan. 11, 2011 /PRNewswire/ -- A NASA spacecraft carrying a Raytheon Company (NYSE: RTN) sensor designed to measure the global distribution of aerosols in Earth's atmosphere has arrived at Vandenberg Air Force Base, Calif., in preparation for launch. Data provided by the innovative Aerosol Polarimetry Sensor, which will fly aboard NASA's Glory spacecraft, will help scientists better understand how aerosols impact global climate patterns. "The Glory Aerosol Polarimetry...

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2009-10-30 11:50:16

For decades, climate scientists have worked to identify and measure key substances -- notably greenhouse gases and aerosol particles -- that affect Earth's climate. And they've been aided by ever more sophisticated computer models that make estimating the relative impact of each type of pollutant more reliable. Yet the complexity of nature -- and the models used to quantify it -- continues to serve up surprises. The most recent? Certain gases that cause warming are so closely linked with the...

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2009-10-06 14:07:21

A knowledge gap exists in the area of climate research: for decades, scientists have been asking themselves whether, and to what extent man-made aerosols, that is, dust particles suspended in the atmosphere, enlarge the cloud cover and thus curb climate warming. Research has made little or no progress on this issue. Two scientists from the Max Planck Institute for Meteorology in Hamburg (MPI-M) and the American National Oceanic and Atmospheric Administration (NOAA) report in the journal...

2009-06-29 16:37:33

Particulate pollution thought to be holding climate change in check by reflecting sunlight instead enhances warming when combined with airborne soot, a new study has found.Like a black car on a bright summer day, soot absorbs solar energy. Recent atmospheric models have ranked soot, also called black carbon, second only to carbon dioxide in potential for atmospheric warming. But particles, or aerosols, such as soot mix with other chemicals in the atmosphere, complicating estimates of their...

2009-06-29 14:40:00

Twenty years ago, Brent Holben was part of a NASA team studying vegetation from space. In an unlikely career twist, his research morphed into the study of a critical, if overlooked, subplot in the story of climate change.From his office at NASA's Goddard Space Flight Center in Greenbelt, Md., Holben helps manage the world's largest network of ground-based sensors for aerosols -- tiny specks of solids and liquids that waft about in the atmosphere. These particles come from both human and...

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2008-08-15 14:30:00

Using a novel theoretical approach, researchers from NASA and other institutions have identified the common thread that determines how aerosols from human activity, like the particles from burning of vegetation and forests, influence cloud cover and ultimately affect climate. The study improves researchers' ability to predict whether aerosols will increase or decrease cloud cover. "We connected the dots to draw a critical conclusion, and found evidence over the Amazon that traces the direct...

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2006-10-11 09:40:00

In June 1912, Novarupta -- one of a chain of volcanoes on the Alaska Peninsula -- erupted in what turned out to be the largest blast of the twentieth century. It was so powerful that it drained magma from under another volcano, Mount Katmai, six miles east, causing the summit of Katmai to collapse to form a caldera half a mile deep. Novarupta also expelled three cubic miles of magma and ash into the air, which fell to cover an area of 3,000 square miles more than a foot deep. Despite the fact...


Word of the Day
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.