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Broad range of 2050 warming from an observationally constrained large climate model ensemble
Broad range of 2050 warming from an observationally constrained large climate model ensemble

... the CMIP-3 ensemble mean for global-mean temperature in 2100, in the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4). The IPCC expert range was supported by a range of sources10 , including studies using pattern scaling3,4 , ensembles of intermediate-complexity models ...
Climate Change and Our Environment
Climate Change and Our Environment

... coupled with the death of large numbers of pines during drought conditions in dry years have increased frequency and intensity of forest fires. In addition, at least partially because of warmer temperatures, several species of bark beetles have devastated trees from Alaska to southern Arizona, leavin ...
The Latest Myths and Facts on Global Warming
The Latest Myths and Facts on Global Warming

... FACT: Before the Industrial Revolution, the amount of CO2 emitted from large natural sources closely matched the amount that was removed through natural processes. That balance has now been upset by human activities, which since the ...
IYSoCC Application Form
IYSoCC Application Form

... Climate change has emerged as the single biggest global issue confronting humankind this century. The adverse impacts of climate change are already being witnessed around the world, particularly on biodiversity, agriculture, water resources, rainfall patterns, seasons, coastal inhabitations, and hig ...
United Nations Framework Convention on Climate Change
United Nations Framework Convention on Climate Change

... (GHG) concentrations caused by human activity; these anthropogenic emissions have increased by 70 per cent between 1970 and 2004 (Intergovernmental Panel on Climate Change (IPCC) 4th Assessment Report). The greenhouse gas effect in the atmosphere regulates overall temperature on the Earth’s surface. ...
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... Choice of time horizon for GWP depends on what a policy maker is interested in e.g. CH4 GWP is 62 for 20 yr horizon, 23 for 100 yr, and 7 for 500 yr ...
Senator Lugar`s press release
Senator Lugar`s press release

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The evolving and increasing need for climate change research on

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Climate change and Genghis Khan

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clicking here - Blue Mountains World Heritage Institute
clicking here - Blue Mountains World Heritage Institute

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beyond Marx and Capitalism
beyond Marx and Capitalism

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Climate change the enhanced greenhouse effect
Climate change the enhanced greenhouse effect

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1 Lecture Aims Equilibrium Climate Sensitivity (ECS) Feedbacks

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Successfully Preparing for Climate Change in New York State
Successfully Preparing for Climate Change in New York State

... The New York State Department of Health works to engage and educate all New Yorkers to enhance understanding of the public health impacts of climate change and empower them to take actions to reduce or eliminate those health consequences. New York State has experienced the effects of climate change ...
how is climate change linked to security
how is climate change linked to security

... Region, the South- Eastern Europe and Southern Caucasus. The role of the «Environmental Leader», builds on combined strengths and field presence to the leading international organizations to perform three key functions: assessment of environment and security risks, capacity building and institutiona ...
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Provisional WMO Statement on the Status of the Global Climate in

... Global temperatures for January to September 2016 were approximately 1.2°C above pre-industrial levels and 0.88°C (1.58°F) above the average for the 19611990 reference period. They were especially warm in the early months of the year, with record monthly anomalies of +1.12°C (+2.02°F) in February an ...
Effects of Climate Change on the World`s Oceans
Effects of Climate Change on the World`s Oceans

... plans mostly responsive to conservation plans) - More ground experiences (from the sector: what factors are important to CC adaptation? - Understand people’s behaviour, beliefs, and perceptions of CC - From impacts to adaptation:: vulnerability extremely important, but how would be the plans to redu ...
Energy and Land - Third World Network
Energy and Land - Third World Network

... the climate change and sustainable development challenges. There is no guarantee that the developing world as a whole will ape the energy profligacy of the North. The odds are presently so stacked against the South as a whole from even pursuing the North’s flawed development model, let alone having ...
Climate change impact on Oceans
Climate change impact on Oceans

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Teaching Notes - Enduring Legacies Native Cases
Teaching Notes - Enduring Legacies Native Cases

... This case is the first of two parts to issues of climate change in Washington State. The focus here is on the effects of sea-level rise (SLR) on certain Indian Reservations, and other shoreline areas. The second part of this case focuses on the effects of climate change on the salmon life-cycle. My ...
Emerging Infectious Diseases, Vector
Emerging Infectious Diseases, Vector

... to increase as a function of climate change (Field et al. 2011) and such predictions are elaborated on in detail in other chapters in this book. Furthermore, shifting biomes as a result of changes in regional climatologies is considered a primary outcome of global climate change with temperate areas ...
box modelling - Wesleyan University
box modelling - Wesleyan University

... DF is the ‘radiative forcing’ caused by the increased CO2 concentration. The value of DF can be calculated from the increase in CO2 concentration using an integrated version of deBeers law. DTs is the change in the surface temperature of the earth We can solve for l by taking the first derivative of ...
Climate Change and Global Social Justice
Climate Change and Global Social Justice

... If we are to put economic justice at the heart of a future climate deal we need to create a carbon price and market that works for the poorest and helps them compete and benefit from a low carbon future. The Stern report estimated that the carbon market could eventually provide transfers of up to $ ...
A regional approach to climate adaptation in the Nile Basin
A regional approach to climate adaptation in the Nile Basin

... A regional-scale modelling framework has been developed to address the need for regional scale tools and information that can support and inform decision-making for large transboundary river basins like the Nile. The framework incorporates the state of the art Perturbed Physics Ensemble (PPE) approa ...
PPT - Atmospheric Chemistry Modeling Group
PPT - Atmospheric Chemistry Modeling Group

... Why does probability of ozone episode increase with increasing temperature? Faster chemical reactions, increased biogenic emissions, and stagnation. ...
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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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