Carbon Dioxide

What Leading Scientists Want You to Know About Today's Frightening Climate Report

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RICHARD SCHIFFMAN SEP 27 2013
Arctic sea ice on September 13, 2013, as measured by satellite microwave sensors and arrayed on NASA’s cloudless Blue Marble satellite imagery. How many years does it have left? (NASA)
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The polar icecaps are melting faster than we thought they would; seas are rising faster than we thought they would; extreme weather events are increasing. Have a nice day! That’s a less than scientifically rigorous summary of the findings of the Fifth Intergovernmental Panel on Climate Change (IPCC) report released this morning in Stockholm. ... Read more about What Leading Scientists Want You to Know About Today's Frightening Climate Report

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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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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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Climate change: Arctic passes 400 parts per million milestone

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Seth Borenstein
Climate change: Arctic passes 400 parts per million milestone
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Arctic monitoring stations show carbon dioxide levels are now above 400 parts per million. Carbon dioxide is the chief climate-change gas and stays in the atmosphere for 100 years. Before the Industrial Age, carbon dioxide levels were 275 ppm.

The world's air has reached what scientists call a troubling new milestone for carbon dioxide, the main global warming pollutant. ... Read more about Climate change: Arctic passes 400 parts per million milestone

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Rising Ocean Temperatures Prime Amazon Rainforest for Fire

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Barbara Fraser and The Daily Climate
Rising Ocean Temperatures Prime Amazon Rainforest for Fire
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Scientists used to think the Amazon was too wet to burn, but a warming Atlantic Ocean is drawing moisture away from the rainforest

MOYOBAMBA, Peru – Karina Pinasco watched in dismay as flames on a hillside at the edge of town lit up the sky one night in October 2010. A farmer had intended to clear a few hectares of land to plant coffee bushes, but the fire – set during an unusually hot, dry spell – quickly got out of hand.

Propelled by winds and high temperatures, it burned for 10 days, charring more than 250 acres of land. ... Read more about Rising Ocean Temperatures Prime Amazon Rainforest for Fire

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

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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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