Global Warming

Arctic ice melting at 'amazing' speed, scientists find

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By David Shukman Science Editor, BBC News, in Svalbard
Sea ice extent- Millions of kilometres squared
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Scientists in the Arctic are warning that this summer's record-breaking melt is part of an accelerating trend with profound implications.

Norwegian researchers report that the sea ice is becoming significantly thinner and more vulnerable.

Last month, the annual thaw of the region's floating ice reached the lowest level since satellite monitoring began, more than 30 years ago.

It is thought the scale of the decline may even affect Europe's weather. ... Read more about Arctic ice melting at 'amazing' speed, scientists find

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Climate Panel Cites Near Certainty on Warming

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Aug 29, 2013 - Justin Gillis - nytimes.com
A new report from the Intergovernmental Panel on Climate Change states that the authors are now 95 percent to 100 percent confident that human activity is the primary influence on planetary warming.
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An international panel of scientists has found with near certainty that human activity is the cause of most of the temperature increases of recent decades, and warns that sea levels could conceivably rise by more than three feet by the end of the century if emissions continue at a runaway pace.

The scientists, whose findings are reported in a draft summary of the next big United Nations climate report, largely dismiss a recent slowdown in the pace of warming, which is often cited by climate change doubters, attributing it most likely to short-term factors. ... Read more about Climate Panel Cites Near Certainty on Warming

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Arctic expert predicts final collapse of sea ice within four years

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John Vidal
Why is the sea ice in the 010
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Sep 17 , 2012

 

As sea ice shrinks to record lows, Prof Peter Wadhams warns a 'global disaster' is now unfolding in northern latitudes

... Read more about Arctic expert predicts final collapse of sea ice within four years

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Animated map: U.S. drought in 2012

Animated map: U.S. drought in 2012
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Drought conditions have been at record levels in the contiguous United States for much of July, according to the National Drought Mitigation Center, which began monitoring drought conditions in 1999. The animated map below shows the spread of drought conditions since January 2012. ... Read more about Animated map: U.S. drought in 2012

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Higher CO2 Levels in Atmosphere May Speed Soil Emissions

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Nathanael Massey
Higher CO2 Levels in Atmosphere May Speed Soil Emissions
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Forests may not help mitigate carbon dioxide pollution thanks to an uptick in CO2 emissions from decomposition

 

As higher levels of carbon dioxide permeate the Earth's atmosphere, scientists have long counted on forests -- which, as individual trees, grow larger in carbon-rich environments -- to soak up some of the excess.

But after nearly a decade and a half of observing forest ecosystems in controlled settings, scientists now see evidence that elevating carbon levels may cause forests to release as much extra carbon as they absorb. ... Read more about Higher CO2 Levels in Atmosphere May Speed Soil Emissions

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