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Latest Chemical oceanography Stories

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2009-08-06 10:15:00

The burning of fossil fuels has released tremendous amounts of the greenhouse gas carbon dioxide (CO2) into the atmosphere, significantly impacting global climate. Were it not for the absorption of CO2 by the oceans, the alarming growth of atmospheric CO2 concentration would be substantially greater than it is. However, this beneficial role of the oceans as a CO2 "scrubber" does not come without undesired consequences. When dissolved, CO2 acts as an acid, and lowers seawater pH. Since the...

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2009-08-04 09:45:00

Climate change, land-use patterns are culprits, scientists to report at Ecological Society of America conferenceWhat do the Gulf of Mexico's "dead zone," global climate change, and acid rain have in common? They're all a result of human impacts to Earth's biology, chemistry and geology, and the natural cycles that involve all three.On August 4-5, 2009, scientists who study such cycles--biogeochemists--will convene at a special series of sessions at the Ecological Society of America (ESA)'s...

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2009-07-31 08:05:00

This summer, one of the world's leading ocean science bodies, the United Nations Educational, Scientific and Cultural Organization's (UNESCO's) and Intergovernmental Oceanographic Commission (IOC) adopted the new international thermodynamic equation of state for seawater called TEOS-10. A complex, dynamic mixture of dissolved minerals, salts, and organic material, seawater has historically presented difficulties in terms of determining its physical chemical properties.For 30 years, climate...

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2009-07-25 13:35:00

A scientist reported Friday that the Gulf of Mexico's "dead zone," where low amounts of oxygen in the water make it hard for anything to live there, is less than half the size as predicted earlier this year. Every year in the gulf bacteria, Which feed on algae blooms from the flow of farming runoff and other nutrients from the Mississippi River, cause the notorious hypoxic area to form in the Gulf. According to Nancy Rabalais, a researcher that specializes in the problem for the Louisiana...

2009-07-20 14:13:00

UNITED STATES DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration NATIONAL OCEAN SERVICE Monterey Bay National Marine Sanctuary 299 Foam Street Monterey, California 93940 PALM BEACH, Calif., July 20 /PRNewswire-USNewswire/ -- The following letter by the National Oceanic and Atmospheric Administration is being republished by the Save the Earth Foundation: Neal Pargman, Founder Save The Earth 37594 Eveningside Road Palm Desert, CA 92211 Dear Neal, Many years before...

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2009-07-20 10:40:00

The world's peak ocean science body has adopted a new definition of seawater developed by Australian, German and US scientists to make climate projections more accurate. In Paris late last month the General Assembly of UNESCO's Intergovernmental Oceanographic Commission (IOC) accepted the case for the introduction of a new international thermodynamic description of seawater, cast in terms of a new salinity variable called Absolute Salinity. Hobart-based CSIRO Wealth from Oceans Flagship...

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2009-06-18 13:00:00

University of Michigan aquatic ecologist Donald Scavia and his colleagues say this year's Gulf of Mexico "dead zone" could be one of the largest on record, continuing a decades-long trend that threatens the health of a half-billion-dollar fishery. The scientists' latest forecast, released today, calls for a Gulf dead zone of between 7,450 and 8,456 square miles"”an area about the size of New Jersey. Most likely, this summer's Gulf dead zone will blanket about 7,980 square miles, roughly...

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2009-06-17 12:35:00

Changes in ocean chemistry "” a consequence of increased carbon dioxide (CO2) emissions from human industrial activity "” could cause U.S. shellfish revenues to drop significantly in the next 50 years, according to a new study by researchers at the Woods Hole Oceanographic Institution (WHOI).Intensive burning of fossil fuels and deforestation over the last two centuries have increased CO2 levels in the atmosphere by almost 40 percent. The oceans have absorbed about one-third of...

2009-06-01 08:35:00

Possible job cuts and revenue loss as a result of ocean acidificationOcean acidification, a direct result of increased CO2 emission, is set to change the Earth's marine ecosystems forever and may have a direct impact on our economy, resulting in substantial revenue declines and job losses.Intensive fossil-fuel burning and deforestation over the last two centuries have increased atmospheric CO2 levels by almost 40%, which has in turn fundamentally altered ocean chemistry by acidifying surface...

2009-05-28 15:26:08

U.S. marine scientists say they have discovered that rising levels of atmospheric carbon dioxide are threatening shellfish populations in many ecosystems. The researchers, led by ecologist Whitman Miller of the Smithsonian Environmental Research Center, said the increasing CO2 levels are contributing to the acidification of open ocean, coastal and estuarine waters. For shellfish and other organisms having calcium carbonate shells and structures, the problem begins when atmospheric CO2...


Latest Chemical oceanography Reference Libraries

Ocean Acidification
2013-04-01 10:32:20

Ocean acidification is the name that was given to the ongoing decrease in the pH of Earth’s oceans, a cause of the uptake of anthropogenic carbon dioxide from the atmosphere. About 30 to 40 percent of the carbon dioxide that is released by humans into the atmosphere dissolves into the lakes, oceans, and rivers. To maintain the chemical equilibrium, some of it reacts with the water to create carbonic acid. Some of these extra carbonic acid molecules react with a water molecule to provide a...

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