New technique shows Roman Warm Period Warmer than Present Day
Wednesday, 10 March 2010 23:39
Dr. David Whitehouse
A promising new technique to reconstruct past temperatures has been developed by scientists at the University of Saskatchewan, Canada and Durham University, England, using the shells of bivalve mollusks. Writing in the Proceedings of the National Academy of Science the scientists say that oxygen isotopes in their shells are a good proxy...
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Alaskan Glaciers Not Melting As Fast As Once Thought
Monday, 08 March 2010 10:28
Northern Arizona University
The melting of glaciers is well documented, but when looking at the rate at which they have been retreating, a team of international researchers steps back and says not so fast.
Previous studies have largely overestimated mass loss from Alaskan glaciers over the past 40-plus years, according to Erik Schiefer, a Northern Arizona University...
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The Methane Scare In Context
Saturday, 06 March 2010 09:36
Andrew C Revkin, Dot Earth
One of the great challenges in assessing the meaning of changes in Arctic climate and other environmental conditions is putting today’s observations in long-term context. This is as true for the bubbling emissions of methane from the frozen, but warming, sea bed as for sea ice around the North Pole. Two recent studies of methane emissions...
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Global Warming May Be Normal At This Point In Glacial Cycle
Wednesday, 03 March 2010 15:12
Lewis Page, The Register
German and Russian scientists say that it is normal for an interglacial period like the one just ending to finish with one or more brief - in geological terms - spells of warming before the glaciers return.
According to boffins based at the Helmholtz-Zentrum für Umweltforschung (UFZ) and at the Russian Academy of Sciences, in the Earth's...
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Global Warming Didn't Kill The Golden Toad
Tuesday, 02 March 2010 17:01
Andrew Curry, Science
The golden toad was last seen in 1989 in the Costa Rican cloud forest of Monteverde—and 5 years later, its disappearance was the first extinction to be blamed on humanmade global warming. New evidence, however, suggests that humans may not have been at fault after all.
Here's the current line on what drove the golden toad extinct. As humans...
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IPCC's Climate Link To Hurricanes In Doubt
Sunday, 28 February 2010 17:24
Jonathan Leake, The Sunday Times
Research by hurricane scientists may force the UN’s climate panel to reconsider its claims that greenhouse gas emissions have caused an increase in the number of tropical storms.
The benchmark report from the Intergovernmental Panel on Climate Change (IPCC) said that a worldwide increase in hurricane-force storms since 1970 was probably...
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Sea Level Shenanigans
Thursday, 25 February 2010 14:49
Dr. David Whitehouse
Last year the Met Office, the Natural Environmental Research Council and the Royal Society released a joint pre-Copenhagen Conference statement that included as one of its five main scientific points:
“There is increasing evidence of continued and accelerating sea-level rises around the world.”
At around the same time the Royal Society...
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Past High Temps Not Caused By CO2
Saturday, 13 February 2010 03:25
Dr. David Whitehouse
A paper published in the journal Science shows that polar ice sheets were smaller and global temperatures were at least as high (or even higher) 81,000 years ago than they are today, even though the concentration of carbon dioxide in the atmosphere was much lower.
At the height of an ice age, immense volumes of water are confined in land-based...
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Water Vapour and the Recent Global Temperature Hiatus
Friday, 29 January 2010 00:56
Dr. David Whitehouse
Climate scientists, writing in the journal Science, say they may have overlooked a major cause of global warming and cooling. American researchers suggest that the amount of water high in the atmosphere is far more influential on global temperatures than was previously thought.
Lead author Dr Susan Solomon, of the US National Oceanic and...
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