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Latest Chemical oceanography Stories

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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...

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2009-05-27 08:32:14

Overfishing and disease have decimated shellfish populations in many of the world's temperate estuarine and coastal ecosystems. Smithsonian scientists, led by Whitman Miller, ecologist at the Smithsonian Environmental Research Center in Edgewater, Md., have discovered another serious threat to these valuable filter feeders"”rising levels of atmospheric carbon dioxide that contribute to the acidification of open ocean, coastal and estuarine waters. Their findings are being published in...

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2009-04-28 13:40:00

A $16 million program launched by the UK government will fund a five-year research study on ocean acidification, BBC News reported. Oceans are becoming more acidic as a result of CO2 from human activities being absorbed by seawater, researchers said, adding that acidification of the oceans will be one of the major environmental concerns of this century. The 5-year study will have researchers analyzing and assessing how marine ecosystems are affected in the Atlantic, Antarctic and Arctic...

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2009-04-17 14:37:04

New calculations made by marine chemists from the Monterey Bay Aquarium Research Institute (MBARI) suggest that low-oxygen "dead zones" in the ocean could expand significantly over the next century. These predictions are based on the fact that, as more and more carbon dioxide dissolves from the atmosphere into the ocean, marine animals will need more oxygen to survive. Concentrations of carbon dioxide are increasing rapidly in the Earth's atmosphere, primarily because of human activities....


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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