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Latest Chemical oceanography Stories

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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....

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2009-04-10 14:39:09

Bill Deutsch, of Auburn University, has launched a new project that is aimed at reducing farm runoff that has become a driving force behind water pollution in the Gulf of Mexico. The $300,000 project, funded by the US Environmental Protection Agency, will combine the efforts of colleagues in Veracruz, Mexico as a part of a three-year project to monitor pollution levels of water flowing into the Gulf. As a result of the study, Deutsch and colleagues hope to determine new methods that will...

2009-03-20 23:01:44

A U.S. biological oceanographer says acidification could be causing a slow-motion destruction of ocean ecosystems. Victoria Fabry, a visiting researcher at Scripps Institution of Oceanography at the University of California, San Diego, said tests show just 48 hours of exposure to slightly corrosive seawater causes mollusc shells to start to dissolve. The university said increasing levels of carbon dioxide could spell ecological disaster to industries dependent on the seas. About a third of...

2009-03-10 13:31:20

A U.S. study suggests the world's coral reefs might begin dissolving if the Earth's atmospheric carbon dioxide content reaches double pre-industrial levels. Even today, rising carbon dioxide in the atmosphere and the resulting effects on ocean water are making it increasingly difficult for coral reefs to grow, said scientists at the Carnegie Institution in Washington and the Hebrew University of Jerusalem. The researchers said reefs are being impacted by ocean acidification caused by the...

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2009-03-09 09:55:00

A new study found that ocean acidification caused by climate change is stripping away the protective shell of tiny yet vital organisms that absorb huge amounts of carbon pollution from the atmosphere, the AFP reported. The study found that the calcium carapace of microscopic animals called foraminifera living in the Southern Ocean have fallen in weight by a third since the start of the Industrial Revolution. The tiny organisms inhabit the surface waters of oceans around the world and are an...

2009-02-19 12:54:00

NEW YORK, Feb. 19 /PRNewswire/ -- Imagine a world without fish. A new documentary on climate change and the oceans proposes just that. The film, A Sea Change, premieres at the DC Environmental Film Festival March 14. A Sea Change is the first documentary about ocean acidification, the underbelly of climate change, a little-known but potentially devastating threat to ocean life. The screening takes place at 3:30 pm in Baird Auditorium, at the National Museum of Natural History, at the...

2009-02-16 09:23:39

The global travel logs of greenhouse gases are based on atmospheric sampling locations sprinkled over the Earth and short towers that measure the uptake or release of carbon from a small patch of forest. But those measurements don't agree with current computer models of how plants and soils behave. A University of Michigan researcher is developing a unique way to reconcile these crucial data. "If we're going to adapt to climate change, we need to be able to predict what the climate will be,"...

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2009-02-06 07:41:08

Proposed new international 'equation of state' employs absolute over practical salinity to redefine thermodynamic equation of seawater after 30 years Seawater is a complex, dynamic mixture of dissolved minerals, salts, and organic materials that despite scientists best efforts, presents difficulties in measuring its potential to contain and disperse energy. Like the water itself, the calculations scientists employ to measure seawater are fluid, undergoing significant revisions and...


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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