Permafrost Archive

  • “The big tell here is that the ice is vanishing — it’s melting faster each time we measure,” said Levy, who noted that there are no signs in the geologic record that the valley’s ground ice has retreated similarly in the past. “This is a dramatic shift from recent history.”

    Coastal Antarctic Permafrost Melting Faster Than Expected

    “The big tell here is that the ice is vanishing — it’s melting faster each time we measure,” said Levy, who noted that there are no signs in the geologic record that the valley’s ground ice has retreated similarly in the past. “This is a dramatic shift from recent history.”

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  • The Last Great Global Warming by Lee R. Kump. [Global temperature rose five degrees Celsius 56 million years ago in response to a massive injection of greenhouse gases into the atmosphere. That intense gas release was only 10 percent of the rate at which heat-trapping greenhouse gases are building up in the atmosphere today. The speed of today's rise is more troubling than the absolute magnitude, because adjusting to rapid climate change is very difficult, and more likely, altogether impossible.]

    The Last Great Global Warming

    The Last Great Global Warming by Lee R. Kump. [Global temperature rose five degrees Celsius 56 million years ago in response to a massive injection of greenhouse gases into the atmosphere. That intense gas release was only 10 percent of the rate at which heat-trapping greenhouse gases are building up in the atmosphere today. The speed of today's rise is more troubling than the absolute magnitude, because adjusting to rapid climate change is very difficult, and more likely, altogether impossible.]

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  • “Well, it’s not really good timing to write about global warming when the summer feels cold and rainy”, a journalist told me last week. Hence, at least here in Germany, there hasn’t been much reporting about the recent evolution of Arctic sea ice – despite the fact that Arctic sea ice extent in July, for example, was the lowest ever recorded for that month throughout the entire satellite record. ...

    The unnoticed melt

    “Well, it’s not really good timing to write about global warming when the summer feels cold and rainy”, a journalist told me last week. Hence, at least here in Germany, there hasn’t been much reporting about the recent evolution of Arctic sea ice – despite the fact that Arctic sea ice extent in July, for example, was the lowest ever recorded for that month throughout the entire satellite record. ...

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  • NSIDC bombshell: Thawing permafrost feedback

    The permafrost permamelt contains a staggering “1.5 trillion tons of frozen carbon, about twice as much carbon as contained in the atmosphere, much of which would be released as methane. Methane is 25 times as potent a heat-trapping gas as CO2 over a 100 year time horizon, but 72 times as potent over 20 years.

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  • A sleeping giant?

    As the planet warms, vast stores of methane — a potent greenhouse gas — could be released from frozen deposits on land and under the ocean. Amanda Leigh Mascarelli reports on the race to understand a ticking time bomb.

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