Satellite pictures of Saharan dust clouds have been in the news all summer, but to Shankar Chellam, they have just raised more questions.
Earth Sciences
Aug 22, 2013
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Levels of carbon dioxide in the atmosphere rise and fall each year as plants, through photosynthesis and respiration, take up the gas in spring and summer, and release it in fall and winter.
Earth Sciences
Aug 9, 2013
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Environmental researchers at Harvard University have published evidence that significant reductions in mercury emissions will be necessary just to stabilize current levels of the toxic element in the environment. So much ...
Environment
Jul 8, 2013
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Ocean acidification due to rising carbon dioxide levels will reduce the density of coral skeletons, making coral reefs more vulnerable to disruption and erosion, according to a new study of corals growing where submarine ...
Environment
Jun 17, 2013
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A milestone was reached last Friday as scientists determined that concentrations of carbon dioxide nudged up to 400 parts per million.
Environment
May 30, 2013
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A marine research expedition sponsored by the U.S. Bureau of Ocean Energy Management (BOEM) and the National Oceanic and Atmospheric Administration (NOAA) has led to the discovery of perhaps the world's largest methane cold ...
Earth Sciences
May 23, 2013
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Trace gases and aerosols are major factors influencing the climate. With the help of highly complex installations, such as MIPAS on board of the ENVISAT satellite, researchers try to better understand the processes in the ...
Earth Sciences
May 22, 2013
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At any given time, cirrus clouds—the thin wisps of vapor that trail across the sky—cover nearly one-third of the globe. These clouds coalesce in the upper layers of the troposphere, often more than 10 miles above the ...
Earth Sciences
May 9, 2013
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Ocean biology alters the chemical composition of sea spray in ways that influence their ability to form clouds over the ocean. That's the conclusion of a team of scientists using a new approach to study tiny atmospheric particles ...
Earth Sciences
Apr 22, 2013
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(Phys.org) —A Purdue University-led team of researchers discovered sunlit snow to be the major source of atmospheric bromine in the Arctic, the key to unique chemical reactions that purge pollutants and destroy ozone.
Earth Sciences
Apr 16, 2013
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