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01 Session 10 Step 2 Collect science info
01 Session 10 Step 2 Collect science info

... change focal point person • Contact details on the UNFCCC website • Useful first point of contact to government departments for data and information • Develop ties for advocacy work ...
WCAIfinal - The Weather and Climate Impact Assessment
WCAIfinal - The Weather and Climate Impact Assessment

... • Climate models with only “natural” forcings (volcanic and solar) do not reproduce observed late 20th century warming • When increases in anthropogenic greenhouse gases and sulfate aerosols are included, models reproduce observed late 20th century warming ...
OEA/Ser.G CP/doc. 4998/14 23 May 2014 Original: Spanish DRAFT
OEA/Ser.G CP/doc. 4998/14 23 May 2014 Original: Spanish DRAFT

... the adverse impacts of climate change, particularly those vulnerable in accordance with the United Nations Framework Convention on Climate Change, and require adaptation strategies to counteract ...
CCRF Tribes_10-16 - Climate Change Response Framework
CCRF Tribes_10-16 - Climate Change Response Framework

... Forest Adaptation Planning and Practices (FAPP) FAPP workshops are interactive, hands-on sessions that help forest managers incorporate climate change considerations into their own real-world forest management projects. Participants use information and tools developed through the Climate Change Resp ...
Hilal Elver
Hilal Elver

... In general, mainstream American media has paid much no attention to this removal of climate change from the national policy agenda. There was one recent article in the New York Times (October 25), as well as some mention of this development in alternative media outlets, including the internet. After ...
State of the climate 2012
State of the climate 2012

... level, and increases in global greenhouse gas concentrations. State of the Climate 2012 provides an updated summary of long-term climate trends. It notes that the long-term warming trend has not changed, with each decade having been warmer than the previous decade since the 1950s. The warming trends ...
Ozone Depletion and Climate Change in Europe
Ozone Depletion and Climate Change in Europe

... combustion of fossil fuels, which is their main source, will lead to exacerbation of the problem (Kovats, et al., 2000). ...
Vanishing and Emerging Ecosystems of Coastal Virginia: Climate
Vanishing and Emerging Ecosystems of Coastal Virginia: Climate

... On a global scale, a principal cause of the habitat alteration producing novel ecosystems is climate change,3 which is expected to continue under all realistic scenarios of future population trends and economic activity. For example, in the Chesapeake Bay region, annual average temperatures of surfa ...
Climate Change and Coastal Ecosystems
Climate Change and Coastal Ecosystems

... On a global scale, a principal cause of the habitat alteration producing novel ecosystems is climate change,3 which is expected to continue under all realistic scenarios of future population trends and economic activity. For example, in the Chesapeake Bay region, annual average temperatures of surfa ...
Slide 1 - climateknowledge.org
Slide 1 - climateknowledge.org

... – Habitable? Water exists in all three phases? ...
Biogeophysical effects of CO2 fertilization on global climate
Biogeophysical effects of CO2 fertilization on global climate

... In the Physiol-noGHG case, the land and ocean carbon cycle models use the predicted atmospheric CO 2 content associated with the prescribed emissions, but the radiation calculation uses the pre-industrial concentrations of CO 2 and other greenhouse gases: there is no change in greenhouse gas radiati ...
Adapting to Climate Change in the Caribbean
Adapting to Climate Change in the Caribbean

... techniques to assist in the development of capability for definitive regional and local climate change projections. Preliminary climate change scenarios are expected to be produced by April ...
Carbon-nitrogen cycle coupling regulates climate
Carbon-nitrogen cycle coupling regulates climate

... Single and combined effects on NEE ...
Potential for Southern Hemisphere climate surprises
Potential for Southern Hemisphere climate surprises

... and recovery of stratospheric ozone concentrations above Antarctica by the middle of the century. Most climate models estimate that the response of the tropospheric westerly winds to these two drivers will approximately cancel until the middle of the 21st century, at least in summer, when the effect ...
The future for fossil fuels in a low carbon economy
The future for fossil fuels in a low carbon economy

... states or state-owned companies. So therefore, simply divesting away from fossil fuel companies producers will ultimately have little effect on the vast majority of fossil fuel assets that are out there. Other means will be required to have an impact on those fossil fuel reserves that are controlled ...
The Policy Implications of Climate Change Ethics
The Policy Implications of Climate Change Ethics

... and millions of poor people that have done little to fill the bathtub, and (b) the greater the threat of rapid, abrupt, potentially catastrophic climate change. ...
Global Circulation Models – the basis for climate change science
Global Circulation Models – the basis for climate change science

... The effect of various factors on the climate are expressed as a forcing value (ie: to what extent they force global warming) The forcing value is measured in Wm-2 (the increase in effective energy caused per square metre). There are many natural forcing factors operating over different time periods, ...
IMPACT2C Summer School 2013
IMPACT2C Summer School 2013

Slide 1
Slide 1

... • 9 out of the past 10 years have now brought serious flooding to the UK • Globally, the 10 hottest years on record have all occurred since 1997 ...
Extreme Events - International Research Institute for Climate and
Extreme Events - International Research Institute for Climate and

... How are they related to global trends? ...
14. human influences on heat-related health indicators during the
14. human influences on heat-related health indicators during the

... scenario). The natural simulations employ solar and volcanic forcings fixed at 2015 levels with all other forcings set to preindustrial values. However, the actual scenarios employ all forcings at 2015 levels, which include the aforementioned natural forcings as well as greenhouse gases, aerosols, a ...
Rafe Pomerance - Ny
Rafe Pomerance - Ny

Examining the Scientific Consensus on Climate Change
Examining the Scientific Consensus on Climate Change

... has been warming in recent years, and 47% think climate scientists agree (i.e., that there is a scientific consensus) that human activities are a major cause of that warming, according to recent polling (see http://​­www​.­p ollingreport​.­com/​­enviro​.­htm). However, attempts to quantify the scien ...
NRDC: St. Louis, Missouri-Identifying and Becoming More Resilient
NRDC: St. Louis, Missouri-Identifying and Becoming More Resilient

... current carbon emission trends because of climate change, ranging from water shortages to more intense storms and floods to sea level rise. To help cities become more resilient to the rising threats of climate change, NRDC reviewed more than 75 scientific studies and other reports to summarize the w ...
Climate Change Deniers: The Misinformation Campaigns Spread by
Climate Change Deniers: The Misinformation Campaigns Spread by

... situations that were funded by the fossil fuel industry. Ross Gelbspan is a notable author, journalist, and environmentalist. (The Heat Is Online) In May of 1995, the Minnesota Public Utilities Commission was put in charge of determining the effects of burning coal in Minnesota power plants. The Wes ...
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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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