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Northern Siberia's thaw lakes are belching out up to five times as much methane as previously thought. And as global warming causes the permafrost to melt, lakes worldwide could emit even more methane, reinforcing climate change.
Originally posted by thermopolis
[The data is again getting lost in "assumption". Facts indicate the entire theory about greenhouse gases is flawed. This reporter just states that so called 'experts" are horribly ignorant of the actual atmosphere system and how the gasses are released and absorbed.
This is more proof of the idiocy of man-made global warming. Yet again observed data differs from theory.
[edit on 6-9-2006 by thermopolis]
Originally posted by thermopolis
The article referenced clearly indicates that "experts" were supprised that the lakes emitted 5 times what was previously "estimated". This statement alone makes suspect the entire greenhouse gas calculation and associated theory. If this "model" were so correct as to predict the cause of global warming, then how can an emission 5 times larger than previously 'estimated" be even possible?
And in November, a multi-year study by 300 scientists concluded that the Arctic was warming twice as fast as the rest of the world and that its ice-cap had shrunk by up to 20 per cent in the past three decades.
The ice is also 40 per cent thinner than it was in the 1970s and is expected to disappear altogether by 2070. And while Dr Pachauri was speaking parts of the Arctic were having a January "heatwave", with temperatures eight to nine degrees centigrade higher than normal. He also cited alarming measurements, first reported in The Independent on Sunday, showing that levels of carbon dioxide (the main cause of global warming) have leapt abruptly over the past two years, suggesting that climate change may be accelerating out of control. He added that, because of inertia built into the Earth's natural systems, the world was now only experiencing the result of pollution emitted in the 1960s, and much greater effects would occur as the increased pollution of later decades worked its way through. He concluded: "We are risking the ability of the human race to survive."
The paper's abstract notes: "A warming signal has penetrated into the world's oceans over the past 40 years. The signal is complex, with a vertical structure that varies widely by ocean; it cannot be explained by natural internal climate variability or solar and volcanic forcing, but is well simulated by two anthropogenic ally forced climate models. (The authors) conclude it is of human origin, a conclusion robust to observational sampling and model differences. Changes in advection combine with surface forcing to give the overall warming pattern. The implications of this study suggest society needs to seriously consider model predictions of future climate change."
Red, orange, and brown colouring indicate areas where temperatures measured in 2000 are warmer than the average temperature from 1951 to 1980. The scale represents degrees in Celsius. Negative numbers represent cooling, and positive numbers depict warming.
"Historically, those changes have happened very slowly; but what we are doing now is we are changing that imbalance at a rate which appears to be unprecedented over at least a thousand years and possibly longer."
A Europe-wide study has provided "conclusive proof" that the seasons are changing, with spring arriving earlier each year, researchers say.
If you have species that are dependent on each other changing at different rates, that could just break down the food web
One of the paper's lead authors, Tim Sparks from the UK's Centre for Ecology and Hydrology (CEH), said the findings did not go as far as pointing the finger of blame at human-induced climate change. "We can't tell that from our study but experts have already shown that there is a discernable human influence on the current climate warming."
Birds that migrate long distances have adapted to the world's changing climate in unexpected ways, a study shows.
As the planet warms, and spring arrives earlier in Europe, birds are being forced to change their migration patterns.
It had been thought that birds travelling long distances from Africa to Europe would be unable to adapt.
But a study in Science suggests they have evolved in response to climate change and are returning earlier