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1166618
1166618

... John Bellamy Foster has drawn our attention to the “Lauderdale Paradox”, after the eighth Earl of Lauderdale. “The common sense of mankind,” Lauderdale contended, “would revolt” at any proposal to augment private riches “by creating a scarcity of any commodity generally useful and necessary to man”. ...
PNC_JHYOO - Pacific Neighborhood Consortium
PNC_JHYOO - Pacific Neighborhood Consortium

...  Decisions under uncertainty are made all the time by individuals, firms and businesses, governments, etc.  What is important is to accurately characterize and communicate uncertainty (i.e. avoiding use of subjective language such as likely, unlikely, etc.) APEC Climate Center ...
Air Pollution and Climate
Air Pollution and Climate

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Air Pollution and Climate
Air Pollution and Climate

...  radiative forcing • increase in O3:  radiative forcing • increased N deposition  fertilization  CO2 uptake:  radiative forcing Net effect not yet clear, but significant impacts on radiative forcing expected for 2100 (IPCC TAR, 2001) ...
Making climate hot - Center for Science and Technology Policy
Making climate hot - Center for Science and Technology Policy

... resulting temperature increase would be steep over the twenty-first century but would then level off. In either case, CO2 concentrations would reach levels far higher than at present or at any time over the last 740,000 years. (See L. Augustin et al., “Eight Glacial Cycles from an Antarctic Ice Core ...
Attribution of the record high Central England temperature of
Attribution of the record high Central England temperature of

... ‘weather@home’ setup (Massey et al 2014) which harnesses volunteers’ computers to generate tens of thousands of simulations. Examples include analyses of heavy snowfall in the Pyrennes (Añel et al 2014) and heavy rainfall in the Danube and Elbe basins (Schaller et al 2014). The model-based component ...
SC/2008/xxx - asian parliamentary assembly
SC/2008/xxx - asian parliamentary assembly

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Sample Chapter 19 (PDF, 28 Pages
Sample Chapter 19 (PDF, 28 Pages

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Sustainable Drylands Management - International Institute for
Sustainable Drylands Management - International Institute for

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Climate Change and Species Extinction
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National Geographic - u.arizona.edu
National Geographic - u.arizona.edu

... that C[O.sub.2] levels at the ocean surface are rising at about the same rate as atmospheric C[O.sub.2]. But it is in the deeper levels where Bates has observed even greater change. In the waters between 250 and 450 meters (820 and 1,476 feet) deep, C[O.sub.2] levels are rising at nearly twice the ...
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Climate Change and Economic Adaptation: the View from Alaska
Climate Change and Economic Adaptation: the View from Alaska

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Dynamics of climate and ecosystem coupling: abrupt changes and

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CEREO WSC Projects

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emerging issues in international and transnational law related to

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Project Document for CEO Approval

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Climate Change

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Slide 1 - climateknowledge.org

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Attribution of recent climate change



Attribution of recent climate change is the effort to scientifically ascertain mechanisms responsible for recent changes observed in the Earth's climate, commonly known as 'global warming'. The effort has focused on changes observed during the period of instrumental temperature record, when records are most reliable; particularly in the last 50 years, when human activity has grown fastest and observations of the troposphere have become available. The dominant mechanisms (to which recent climate change has been attributed) are anthropogenic, i.e., the result of human activity. They are: increasing atmospheric concentrations of greenhouse gases global changes to land surface, such as deforestation increasing atmospheric concentrations of aerosols.There are also natural mechanisms for variation including climate oscillations, changes in solar activity, and volcanic activity.According to the Intergovernmental Panel on Climate Change (IPCC), it is ""extremely likely"" that human influence was the dominant cause of global warming between 1951 and 2010. The IPCC defines ""extremely likely"" as indicating a probability of 95 to 100%, based on an expert assessment of all the available evidence.Multiple lines of evidence support attribution of recent climate change to human activities: A basic physical understanding of the climate system: greenhouse gas concentrations have increased and their warming properties are well-established. Historical estimates of past climate changes suggest that the recent changes in global surface temperature are unusual. Computer-based climate models are unable to replicate the observed warming unless human greenhouse gas emissions are included. Natural forces alone (such as solar and volcanic activity) cannot explain the observed warming.The IPCC's attribution of recent global warming to human activities is a view shared by most scientists, and is also supported by 196 other scientific organizations worldwide (see also: scientific opinion on climate change).
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