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Study using paleoclimate data suggests climate sensitivity to CO2 doubling may be less severe than projected

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The team combined extensive sea and land surface temperature reconstructions from the Last Glacial Maximum (LGM) with a climate model of intermediate. complexity to estimate the equilibrium climate sensitivity for a doubling of atmospheric carbon dioxide concentrations (ECS 2xC ) from. preindustrial times. preindustrial times.

Climate 220
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New Bayesian Approach Addressing Shared Biases Across Models Suggests That Stabilizing CO2 Concentrations at Current Levels Leaves 10% Chance of Exceeding 2C Target

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Under benchmark risk management metrics, allowable emission paths should have less than a 10% chance of overshooting the target, Lemoine notes in a new paper published in the American Meteorological Society’s Journal of Climate , so policymakers “ may therefore require significant near-term abatement and eventual net negative emissions.

CO2 199
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PBL/JRC: Global CO2 emissions increase to new all-time record in 2013, but growth is slowing down

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Global CO 2 emissions from fossil fuel use and cement production reached a new all-time high in 2013, according to the annual report “Trends in global CO2 emissions”, released by PBL Netherlands Environmental Assessment Agency and the European Joint Research Centre (JRC). Climate Change Emissions' billion tonnes (Gt).

2013 240
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Study: expanding Brazilian sugarcane for ethanol could reduce global CO2 emissions by up to 5.6%

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However, it could be accomplished without impinging on environmentally sensitive areas in Brazil and while allowing for the expansion of other agricultural crops and human needs, the researchers report in a paper in the journal Nature Climate Change. million and 116 million hectares (144,788 to 447,879 square miles). Gigatons yr −1.

Brazil 150
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Study finds 1.4 Gt discrepancy between national and provincial data sets for greenhouse gas emissions in China

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The gap, noted the researchers in their open-access paper in Nature Climate Change , is equivalent to Japan’s annual CO 2 emissions, the world’s fourth largest emitter, with 5% of the global total. The area chart shows the increase of CO 2 emissions calculated from the national energy statistics since 1997 broken down by different fuel type.

Emissions 218
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Measurements of CO2 and CO in China’s Air Indicate Sharply Improved Combustion Efficiency

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The findings, published in the 21 September issue of Atmospheric Chemistry and Physics , are generally consistent with official Chinese government statistics and could bolster their credibility as international negotiations proceed on commitments of China and other nations to combat climate change. Munger, J. McElroy, M. Nielsen, C.

CO2 199
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GCP Carbon Budget Finds Anthropogenic CO2 Emissions Rose 2% in 2008 Despite Global Financial Crisis; Natural Sinks Not Keeping Pace With Increasing Emissions

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Using a variety of data including direct observations, computer-generated models, and estimates from countries’ energy statistics, the team created a global CO 2 budget—the amount of CO 2 produced and consumed—from 1959 to 2008. Tags: Climate Change Emissions. between 2000 and 2008, compared with 1% per year in the 1990s.

2008 218