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Resilient Coastal City Regions - Lincoln Institute of Land Policy
Resilient Coastal City Regions - Lincoln Institute of Land Policy

... climate change, these large, sprawling countries have much in common beyond their predilections for coastal development. First, per capita they are among the highest greenhouse gas (GHG) emitters in the developed world, with Australia usually heading the list and the United States close behind. Seco ...
View as a PDF - Frontier Centre For Public Policy
View as a PDF - Frontier Centre For Public Policy

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... • Atmospheric concentration of CO2, a principal greenhouse gas, has increased since the mid19th century (the Industrial Revolution). Rise has been especially rapid since the 1950s. • It is a known fact that humans emit carbon dioxide into the atmosphere due to transportation and industrial processes ...
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Greenhouse Effect/Climate Change/Global Warming

... The pre-industrial concentration of methane was 848 parts per billion (ppb). Atmospheric concentration in 2001 was about 1800 ppb, a relative increase of over 100%, or a doubling of the atmospheric concentration. The current atmospheric concentration of nitrous oxide is 315 parts ppb, a 10% increase ...
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Human rights and climate change

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Climate Change: possible impacts on coastal systems

... the next two decades a warming of about 0.2°C per decade is projected for a range of Special Reduction Emission Scenarios. Even if the concentration of all greenhouse gases and aerosols had been kept constant at year 2000 levels, a further warming of 0.1°C per decade would be expected. ...
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Examining the Scientific Consensus on Climate Change

... their peer-­r eviewed publications in the past 5 years have been on the subject of climate change. While respondents’ names are kept private, the authors noted that the survey included participants with well­documented dissenting opinions on global warming theory. Results show that overall, 90% of p ...
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ch18_lecture - La Habra High School

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Scientific opinion on climate change



The scientific opinion on climate change is the overall judgment amongst scientists about whether global warming is happening, and if so, its causes and probable consequences. This scientific opinion is expressed in synthesis reports, by scientific bodies of national or international standing, and by surveys of opinion among climate scientists. Individual scientists, universities, and laboratories contribute to the overall scientific opinion via their peer-reviewed publications, and the areas of collective agreement and relative certainty are summarised in these high level reports and surveys.The scientific consensus is that the Earth's climate system is unequivocally warming, and that it is extremely likely (at least 95% probability) that humans are causing most of it through activities that increase concentrations of greenhouse gases in the atmosphere, such as deforestation and burning fossil fuels. In addition, it is likely that some potential further greenhouse gas warming has been offset by increased aerosols.National and international science academies and scientific societies have assessed current scientific opinion on global warming. These assessments are generally consistent with the conclusions of the Intergovernmental Panel on Climate Change, the IPCC Fourth Assessment Report summarized:Warming of the climate system is unequivocal, as evidenced by increases in global average air and ocean temperatures, the widespread melting of snow and ice, and rising global average sea level.Most of the global warming since the mid-20th century is very likely due to human activities.Benefits and costs of climate change for [human] society will vary widely by location and scale. Some of the effects in temperate and polar regions will be positive and others elsewhere will be negative. Overall, net effects are more likely to be strongly negative with larger or more rapid warming.The range of published evidence indicates that the net damage costs of climate change are likely to be significant and to increase over time.The resilience of many ecosystems is likely to be exceeded this century by an unprecedented combination of climate change, associated disturbances (e.g. flooding, drought, wildfire, insects, ocean acidification) and other global change drivers (e.g. land-use change, pollution, fragmentation of natural systems, over-exploitation of resources).Some scientific bodies have recommended specific policies to governments and science can play a role in informing an effective response to climate change, however, policy decisions may require value judgements and so are not included in the scientific opinion.No scientific body of national or international standing maintains a formal opinion dissenting from any of these main points. The last national or international scientific body to drop dissent was the American Association of Petroleum Geologists, which in 2007 updated its statement to its current non-committal position. Some other organizations, primarily those focusing on geology, also hold non-committal positions.
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