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UK scientists have detected a huge dome of freshwater that is developing in the western Arctic Ocean. The bulge is some 8,000 cubic km in size and has risen by about 15cm since 2002. The team thinks it may be the result of strong winds whipping up a great clockwise current in the northern polar region called the Beaufort Gyre. This would force the water together, raising sea surface height, the group tells the journal Nature Geoscience.

The data (1995-2010) indicates a significant swelling of water in the Beaufort Gyre, particularly since the early part of the 2000s. The rising trend has been running at 2cm per year.

A lot of research from buoys and other in-situ sampling had already indicated that water in this region of the Arctic had been freshening. This freshwater is coming in large part from the rivers running off the Eurasian (Russian) side of the Arctic basin. Winds and currents have transported this freshwater around the ocean until it has been pulled into the gyre. The volume currently held in the circulation probably represents about 10% of all the freshwater in the Arctic.

Global warming became a cause to save life on earth before it had a chance to become good science.  The belief that fossil fuel use is an emergency destroying our planet by CO2 emissions took over the media and political arena by storm.  The issue was politicized so quickly that the normal scientific process was stunted.  We have never had a full, honest national debate on either the science or government policy issues. Everyone "knows" that global warming is true.  The public has no idea of the number of scientists -- precisely one thousand at last count of a congressional committee -- who believe that global warming is benign and natural, and that it ended in 1998.  We have not been informed of the costs to our economy of discouraging fossil fuel development and promoting alternatives.  The public need to know the choices being made on their behalf, and to have a say in the matter.  We are constantly told that the scientific and policy debate on global warming is over.  It has just begun.

The worst hurricanes were in 1926, the second-worst in 1900.  The world's top hurricane experts say that there is no evidence that global warming affects storms.

More and more scientists are revolting against the global warming consensus enforced by government funding, the academic establishment, and media misrepresentation.  They are saying that solar cycles and the complex systems of cloud formation have much more influence on our climate, and account for historical periods of warming and cooling much more accurately that a straight line graph of industrialization, CO2, and rising temperatures.  They also point out that the rising temperatures that set off the global warming panic ended in 1998.

Man-made carbon emissions have acidified the world's oceans far beyond their natural levels, new research suggests.In some regions, acidity levels rose faster in the last two centuries than it did in the previous 21,000 years, a study from the University of Hawaii has shown.Ocean acidity makes it harder for organisms such as molluscs and coral to construct the protective layers they need to survive.

The National Oceanic and Atmospheric Administration declared a recent rash of seal deaths to be an "unusual mortality event" on Tuesday. More than 60 seals have died and 75 found diseased in Alaska with skin sores and patchy hair loss. The Fish and Wildlife Service has also identified diseased and dead walruses. A similar official declaration for Pacific Walrus in Alaska is pending. The walruses have suffered from similar symptoms, which have also included labored breathing and appearing lethargic. Scientists have yet to identify a cause for this disease, but tests have indicated that it is not a virus. Hunters, meanwhile, continue to see many healthy animals. Despite a significant contact with seals and walruses, no humans have reported similar symptoms. However, it is not known whether the disease can be transmitted to humans or other animals. In most cases, necropsies and lab tests have revealed skin lesions, fluid in the lungs, white spots on the liver, and abnormal growths in the brain. Some of the seals and walruses have undersized lymph nodes, possibly a sign of weakened immuned systems. In Canada and Russia, ringed seals have been reported suffering similar symptoms. It is unknown whether they are related.

The United States experienced some of the most extreme weather events in its history this spring, including deadly outbreaks of tornadoes, near-record flooding, drought and wildfires

Damages from these disasters have already passed $32 billion, and the hurricane season, which is just beginning, is projected to be above average, according to the National Oceanic and Atmospheric Administration.

Government scientists said Wednesday that the frequency of extreme weather has increased over the past two decades, in part as a result of global warming caused by the accumulation of carbon dioxide in the atmosphere

Coral reefs are on course to become the first ecosystem that human activity will eliminate entirely from the Earth, a leading United Nations scientist claims. He says this event will occur before the end of the present century,

"a new first for mankind – the 'extinction' of an entire ecosystem"

The predicted decline is mainly down to climate change and ocean acidification, though local activities such as overfishing, pollution and coastal development have also harmed the reefs. The book, Our Dying Planet, published by University of California Press, contains further alarming predictions, such as the prospect that "we risk having no reefs that resemble those of today in as little as 30 or 40 more years"

A recent study has confirmed that toxic compounds derived from oil that was released in the Deepwater Horizon spill that occurred in the Gulf of Mexico nearly two years ago has entered the ocean's food chain through microorganisms.

The study, funded by the National Science Foundation and led by a team of researchers from East Carolina University, the University of Maryland Center for Environmental Science, Oregon State University, Georgia Institute of Technology, and the U.S. Geological Survey, detected chemical compounds found in oil called hydrocarbons, some known to be carcinogenic, within the bodies of microscopic crustaceans called zooplankton.

"Our research helped to determine a 'fingerprint' of the Deepwater Horizon spill--something that other researchers interested in the spill may be able to use," Dr. Siddhartha Mitra of East Carolina University said in a statement. "Furthermore, our work demonstrated that zooplankton in the Northern Gulf of Mexico accumulated toxic compounds derived from the Macondo well." Zooplankton form the base of the ocean's food web and are typically fed upon by fish larva and smaller crustaceans, said Dr. David Kimmel of East Carolina University. Whether or not these larger organisms have accumulated significant amounts of toxic compounds, or has entered the human food chain, has yet to be determined. "That is certainly one of the questions we would like to see answered with more research," said Dr. Mitra in a phone interview.

Methane is 21 times more heat-trapping that carbon dioxide.

Actually, any CH4 released today is at least 56 times more heat-trapping than a molecule of C02 also released today. And because of the way it reacts in the atmosphere, the number is probably even higher, according to research conducted by  Drew Shindell , a scientist at NASA’s Goddard Space Center.

And we appear to be approaching some irrevocable tipping points that will create powerful negative feedback loops, the most worrisome being  the release of methane  stores at the bottom of the ocean and locked into sub-Arctic permafrost.

Dramatic and unprecedented plumes of methane – a greenhouse gas 20 times more potent than carbon dioxide – have been seen bubbling to the surface of the Arctic Ocean by scientists undertaking an extensive survey of the region.

never before witnessed the scale and force of the methane being released from beneath the Arctic seabed.

The scale and volume of the methane release has astonished the head of the Russian research team

Communities of species previously unknown to science have been discovered on the seafloor near Antarctica, clustered in the hot, dark environment surrounding hydrothermal vents.

The discoveries, made by teams led by the University of Oxford, University of Southampton, the National Oceanography Centre, and British Antarctic Survey, include new species of yeti crab, starfish, barnacles, and sea anemones, and even an octopus probably new to science.

For the first time researchers, using a Remotely Operated Vehicle (ROV), have been able to explore the East Scotia Ridge deep beneath the Southern Ocean where hydrothermal vents, including 'black smokers' reaching temperatures of up to 382 degrees Celsius, create a unique environment lacking sunlight but rich in certain chemicals. The team report their findings in this week's PLoS Biology.

Jellyfishes rely on drifting to eat. They take their luck with currents, and create tiny eddies to guide food toward their tendrils. Yet in waters from the Sea of Japan to the Black Sea, jellies today are thriving as many of their marine vertebrate and invertebrate competitors are eliminated by overfishing, dead zones and other human impacts. How have these drifters of the sea reversed millions of years of fish dominance, seemingly overnight?