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Mystery of Ocean Heat Deepens as Climate Changes
2014-10-07 16:20:00| Climate Ark Climate Change & Global Warming Newsfeed
ClimateWire: When British Capt. James Cook undertook his second voyage in the Southern Ocean in 1772, scientists on board measured the temperature 183 meters below the surface. It was colder than at the surface. Scientists have since graduated to vastly improved technologies for measuring the ocean's temperatures. By 2004, they had launched Argo ("swift" in Greek), a network of 3,000 floating devices spread out throughout the world. The devices record the temperatures down to 6,500 feet, where only the deepest...
Tags: changes
heat
ocean
mystery
Southern Hemisphere ocean warming 'underestimated'
2014-10-07 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Australian Broadcasting Corporation: Hidden heat Previous estimates of global ocean warming have been significantly underestimated due to historically sparse temperature data from the Southern Ocean, new research has found. The study, led by Australian oceanographer Dr Paul Durack from the US Department of Energy's Lawrence Livermore National Laboratory, was published online today in Nature Climate Change.. They analysed satellite observations of sea surface height changes along with ocean temperature data collected between 1970...
Tags: southern
ocean
warming
hemisphere
A Gulf in Ocean Knowledge
2014-10-07 00:14:00| Climate Ark Climate Change & Global Warming Newsfeed
New York Times: Scientists probably have significantly underestimated how much the worlds oceans have warmed since the 1970s, according to a new study. The finding may force researchers to revise their gauges of some climate change effects, including the rate of sea-level rise. The study, by Paul J. Durack of Lawrence Livermore National Laboratory and others, found that the underestimation was the result of decades of spotty sampling of water temperatures in the Southern Hemisphere, home to three-fifths of the...
Lack of ocean heat puzzles NASA hunt for warming 'hiatus'
2014-10-06 22:20:00| Climate Ark Climate Change & Global Warming Newsfeed
Agence France-Presse: The deep ocean may not be hiding heat after all, raising new questions about why global warming appears to have slowed in recent years, said the US space agency Monday. Scientists have noticed that while greenhouse gases have continued to mount in the first part of the 21st century, global average surface air temperatures have stopped rising along with them, said NASA. Some studies have suggested that heat is being absorbed temporarily by the deep seas, and that this so-called global warming...
Ocean Warming in Southern Hemisphere Worse Than We Thought
2014-10-06 20:07:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature World: in the Southern Hemisphere, which make up 60 percent of the world's oceans, are warming far worse than previously thought, according to a new study. Using satellite observations and a large collection of climate models, Lawrence Livermore National Laboratory (LLNL) scientists have found that long-term ocean warming in the upper 700 meters (~2,300 feet) of Southern Hemisphere oceans has likely been underestimated. "This underestimation is a result of poor sampling prior to the last decade and...
Tags: we
thought
southern
ocean
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