Greenhouse Gases

Climate 'tech fixes' urged for Arctic methane

Author: 

Richard Black
Climate 'tech fixes' urged for Arctic methane
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An eminent UK engineer is suggesting building cloud-whitening towers in the Faroe Islands as a "technical fix" for warming across the Arctic.Scientists told UK MPs this week that the possibility of a major methane release triggered by melting Arctic ice constitutes a "planetary emergency."  The Arctic could be sea-ice free each September within a few years. ... Read more about Climate 'tech fixes' urged for Arctic methane

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U.S. will lead new effort to cut global warming from methane, soot

Author: 

Brian Vastag
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With global efforts to reduce carbon dioxide emissions stalled, the United States and five other countries are starting a new program to cut other pollutants — including methane, soot and hydrofluorocarbons — that contribute to global warming. ... Read more about U.S. will lead new effort to cut global warming from methane, soot

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Shock as retreat of Arctic sea ice releases deadly greenhouse gas

Author: 

Steve Connor
Dramatic and unprecedented plumes of methane – a greenhouse gas 20 times more po
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Dramatic and unprecedented plumes of methane – a greenhouse gas 20 times more potent than carbon dioxide – have been seen bubbling to the surface of the Arctic Ocean by scientists undertaking an extensive survey of the region.

The scale and volume of the methane release has astonished the head of the Russian research team who has been surveying the seabed of the East Siberian Arctic Shelf off northern Russia for nearly 20 years. ... Read more about Shock as retreat of Arctic sea ice releases deadly greenhouse gas

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From Cairo to the Cape, climate change begins to take hold of Africa

Author: 

John Vidal
Climate change hotspots in Africa
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We are right on the equator, and Speke, Moebius, Elena, Savoia and Moore, the five great glaciers of the the Rwenzori, the Mountains of the Moon, glint in the bright Ugandan sun. Usually lost in the mists that cloak these peaks up to 5,100 metres high, the glaciers are the only major ones left of the 43 that were mapped and named in 1906. Then, the ice covered 7.5 square kilometres, now it is thought to cover less than one. ... Read more about From Cairo to the Cape, climate change begins to take hold of Africa

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How to Police Geoengineering?

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CORNELIA DEAN
How to Police Geoengineering?
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U.S. sets record with a dozen billion-dollar weather disasters in one year

When people consider using engineering techniques to counter the effects of climate change, they usually think first about the technical difficulties involved. But a new report points out challenges that may be even more important: regulating the research on such technologies, and their potential deployment. ... Read more about How to Police Geoengineering?

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NOAA: Autumn and November both warmer than average in the United States

Billion dollar weather/climate disasters 1980 - November 2011
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U.S. sets record with a dozen billion-dollar weather disasters in one year

November and the September-November autumn season were warmer than average across the contiguous U.S., according to scientists at NOAA’s National Climatic Data Center (NCDC) in Asheville, N.C. Precipitation totals across the country were also above average during November, but near the long-term average for the autumn season. ... Read more about NOAA: Autumn and November both warmer than average in the United States

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Greenhouse gases rise by record amount

Author: 

Associated Press
Emissions from a coal-fired power station. The output of greenhouse gases has ju
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The global output of heat-trapping carbon dioxide has jumped by a record amount, according to the US department of energy, a sign of how feeble the world's efforts are at slowing man-made global warming.

The figures for 2010 mean that levels of greenhouse gases are higher than the worst case scenario outlined by climate experts just four years ago.

"The more we talk about the need to control emissions, the more they are growing," said John Reilly, the co-director of MIT's Joint Program on the Science and Policy of Global Change. ... Read more about Greenhouse gases rise by record amount

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World headed for irreversible climate change in five years, IEA warns

Climate concerns as ‘ozone-friendly’ HFCs use grows

Author: 

Mark Kinver
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A rise in the use of "ozone-friendly" HFCs has prompted experts to voice concerns that the potent greenhouse gases could be a problem in the future.

A UN report says that HFCs, many more times potent than CO2, could account for up to 20% of emissions and hamper efforts to curb climate change.

They are widely used in fridges and air conditioning, replacing CFCs and HCFCs that damage the Earth's ozone layer.

The findings were presented during a meeting on protecting the ozone layer. ... Read more about Climate concerns as ‘ozone-friendly’ HFCs use grows

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Asia, Africa megacities top climate change risk survey

Author: 

David Fogarty
eople wade through knee-deep water on the outskirts of Dhaka, Aug. 10, 2011. REU
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* World's fastest growing populations increasingly at risk

* Africa and Asia most vulnerable to more extreme weather

* Survey can help city planners, investors adapt to wilder weather

SINGAPORE, Oct 26 (Reuters) - Rapidly growing megacities in Africa and Asia face the highest risks from rising sea levels, floods and other climate change impacts, says a global survey aimed at guiding city planners and investors. ... Read more about Asia, Africa megacities top climate change risk survey

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