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Latest Chemical oceanography Stories

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2010-01-08 13:22:59

The impact on levels of carbon dioxide in the Earth's atmosphere by the decaying remains of a group of marine creatures that includes starfish and sea urchin has been significantly underestimated. "Climate models must take this carbon sink into account," says Mario Lebrato, lead author of the study. The work was done when he was at the National Oceanography Centre, Southampton (NOCS) and affiliated with the University of Southampton's School of Ocean and Earth Science (SOES); he is now at the...

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2009-12-22 10:54:03

There is little doubt among scientists now that human carbon dioxide emissions are warming the planet. Another problem of rising atmospheric carbon dioxide (CO2) is that CO2 is being absorbed by the oceans, which increases seawater acidity (lowers the seawater pH). This process, termed 'ocean acidification', has received growing scientific and public interest because it threatens certain groups of marine organisms, including corals. Only recently have researchers realized that man-made carbon...

566795b3f9e5e842cb8e705c6ee7d8a71
2009-12-21 06:50:39

A study published by U.S. scientists on Sunday said pollution has caused the world's oceans to become noisier, causing more harmful effects to whales, dolphins, and other marine life. These effects include death and serious injury caused by brain hemorrhages or other tissue trauma, strandings and beachings, temporary and permanent hearing loss or impairment, displacement from preferred habitat and disruption of feeding, breeding, nursing, communication, sensing and other behaviors vital to...

2009-12-15 22:21:15

A new study of Pacific Ocean sediments off the coast of Chile has found that  offshore waters experienced systematic oxygen depletion during the rapid warming of the Antarctic following the last "glacial maximum" period 20,000 years ago. The findings are intriguing as scientists are exploring whether climate change may be contributing to outbreaks of hypoxia "“ or extremely low oxygen levels "“ along the near-shore regions of South America and the Pacific Northwest of the...

2009-12-03 22:22:54

An international team of scientists led by the University of East Anglia (UEA) has developed a new method of measuring the absorption of CO2 by the oceans and mapped for the first time CO2 uptake for the entire North Atlantic. Published tomorrow in the journal Science, the peer-reviewed study will greatly improve our understanding of the natural ocean 'sinks' and enable more accurate predictions about how the global climate is changing. The new technique could also lead to the development of...

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2009-12-02 10:22:33

In a striking finding that raises new questions about carbon dioxide's (CO2) impact on marine life, Woods Hole Oceanographic Institution (WHOI) scientists report that some shell-building creatures"”such as crabs, shrimp and lobsters"”unexpectedly build more shell when exposed to ocean acidification caused by elevated levels of atmospheric carbon dioxide (CO2). Because excess CO2 dissolves in the ocean"”causing it to "acidify" "”researchers have been concerned about the...

2009-11-03 14:43:34

Nutrients in the Atlantic Large-scale distributions of two important nutrient pools "“ dissolved organic nitrogen and dissolved organic phosphorus (DON and DOP) have been systematically mapped for the first time over the Atlantic Ocean in a study led by Dr Sinhue Torres-Valdes of the National Oceanography Centre, Southampton. The findings have important implications for understanding nitrogen and phosphorus biogeochemical cycles and the biological carbon pump in the Atlantic Ocean. Tiny...

3fda90d4cefec2f59072a0936645a707
2009-11-03 09:18:21

Deep-sea ecosystems occupying 60% of the Earth's surface could be vulnerable to the effects of global warming warn scientists writing in the Proceedings of the National Academy of Sciences. "Global-scale models are now estimating that climate change will affect the supply of organic matter from surface waters upon which most deep-sea ecosystems depend," says co-author Dr Henry Ruhl of the National Oceanography Centre, Southampton. Most scientists believe that the burning of fossil fuels (gas,...

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2009-10-26 15:28:49

Stony Brook University researchers find elevated carbon dioxide concentrations impede growth and survival of bivalve larvae Relatively minor increases in ocean acidity brought about by high levels of carbon dioxide have significant detrimental effects on the growth, development, and survival of hard clams, bay scallops, and Eastern oysters, according to researchers at Stony Brook University's School of Marine and Atmospheric Sciences. In one of the first studies looking at the effect of ocean...

b4820273df9fdff2d0e429439ccbe52d
2009-10-10 08:36:32

Scientists work to explain why massive "dead zones" have been invading the Pacific Northwest's near-shore waters since 2002 Yet another ecological scourge may earn a place on the ever-lengthening list of problems potentially caused by climate change: the formation of some so-called "dead zones""”huge expanses of ocean that lose virtually all of their marine life at depth during the summer. Possible connections between climate change and the relatively recent formation of dead zones in...


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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Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
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