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FROM THE HARPOON TO THE HEATEAT
FROM THE HARPOON TO THE HEATEAT

... temperatures when a portion of this radiation is reflected back to the Earth’s surface, the phenomenon known as “radiative forcing.”14 Climate researchers have concluded that increased concentrations of greenhouse gases are responsible for the increase in average global temperatures of about 0.6º C ...
Potential Climate Change Impacts on Marine Resources of the
Potential Climate Change Impacts on Marine Resources of the

... changes in weather patterns related to precipitation as well as sea level rise, in combination with rising temperatures, are likely to increase favorable environments for spore growth. High urbanization locales in the Northeast could, potentially, act as a surrogate for climatic change, with subsequ ...
Modeling the Impact of Afforestation on Global Climate: A 2
Modeling the Impact of Afforestation on Global Climate: A 2

... Both high-altitude and high-latitude regions – where one can expect consistent snow cover – have been accepted as regions where deliberate land-use change in the form of afforestation can lead to a net positive forcing due to a lower surface albedo. In addition, GCM simulations by Gibbard et al. (20 ...
Trends in American Public Opinion on Global Warming Policies Between... Jon A. Krosnick Bo MacInnis Stanford University
Trends in American Public Opinion on Global Warming Policies Between... Jon A. Krosnick Bo MacInnis Stanford University

... blocks (area code + exchange + two-digit block number) that contained one or more residential directory listings. The cell phone sample was drawn through a systematic sampling from 1000 blocks dedicated to cellular service according to the Telcordia database. The data were weighted to ensure that th ...
alexander b. polonsky
alexander b. polonsky

... degrees in the recent coupled models is eddyresolving for the atmosphere but not the oceanic part. Certainly, the resolution of coupled models may be improved essentially in the near future. However, it is not clear whether a more detailed resolution itself may improve essentially the results of cli ...
Georgia`s Climate Variability vs Climate Change
Georgia`s Climate Variability vs Climate Change

... During the last Ice Age, Georgia probably experienced a climate somewhat wetter and cooler than we have today. Models indicate that the average annual rainfall was about 63 inches and the annual average temperature was 56.3º F, compared with modern values of 51 inches and 63.5º F. ...
Connecting Changing Ocean Circulation with Changing Climate
Connecting Changing Ocean Circulation with Changing Climate

... show that this difference is robust to various ocean model formulation and forcing differences. Both studies identify the redistribution of control climate ocean heat content as the important factor in the storage pattern differences (the passive tracer was absent in the control climate). However, b ...
Yukon Government Climate Change Strategy
Yukon Government Climate Change Strategy

... In Yukon, and across the circumpolar north, the effects of climate change are becoming more apparent and better understood. Yukon is experiencing impacts such as thawing permafrost, increased glacial melting, rising sea levels on the north coast, beetle infestations across southern spruce forests an ...
Real Estate Investment and Climate Risk Assessment
Real Estate Investment and Climate Risk Assessment

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Climate Change Strategy - Environment Yukon
Climate Change Strategy - Environment Yukon

... In Yukon, and across the circumpolar north, the effects of climate change are becoming more apparent and better understood. Yukon is experiencing impacts such as thawing permafrost, increased glacial melting, rising sea levels on the north coast, beetle infestations across southern spruce forests an ...
MOCA- Methane Emissions from the Arctic OCean to the
MOCA- Methane Emissions from the Arctic OCean to the

... to the atmosphere, and will identify the main influences on the atmospheric fraction. The detailed observation and process-based studies in WP1 will be up-scaled spatially over the Arctic region and for future time periods to generate CH4 emission estimates related to MH in the Arctic Ocean (WP2). F ...
Professional Development Scholarship Program
Professional Development Scholarship Program

... Session 8: Implications of Climatic Change for Food Security. Food security remains a concern even though increases in global agricultural production have surpassed population increases over the past several decade and it appears that climate change may well heighten future food security. This semin ...
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ahead of the storm

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Sustainable Land Management and Its Relation to
Sustainable Land Management and Its Relation to

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Managing climate risk using climate-smart agriculture
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... The resulting lively debates have focused on finding the right mix of short term interventions for managing risk while the countries find ways to solve underlying causes. Agricultural risks result from underlying agro-ecological, infrastructural, and institutional bottlenecks. These bottlenecks are ...
Influences of Climate on Ontario Forests
Influences of Climate on Ontario Forests

... Many researchers have addressed the topic of climate in relation to vegetation using different types of modelling approaches. Most use a biome approach, which relates the current areal extent of biomes to current climate and uses those relationships to predict where the vegetation might be in the fu ...
Future development in extreme one-hour precipitation over Europe
Future development in extreme one-hour precipitation over Europe

... events corresponding to return periods at or exceeding the 30-years simulated data used to represent both the present and future climate. Figure 7 essentially means that the probability of the climate factor being larger than one is 68% for return periods between 2 and 20 years, and lower for higher ...
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Expansion of the Tropics – Evidence and implications
Expansion of the Tropics – Evidence and implications

... statistics of tropopause height to distinguish between Tropics and extratropics (areas outside the tropical zone) in studies was problematic, and that widening trends were particularly sensitive to changes in the tropopause height threshold. Additionally, a number of studies have identified shifts a ...
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Presentation

... Global methodologies for the assessment of ICT carbon footprint  Recommendation ITU-T L.1400 Overview and general principles of methodologies for assessing the environmental impact of ICT  Recommendation ITU-T L.1410 Methodology for environmental impacts of ICT goods, networks and services  Recom ...
Atlantic Region Adaptation Science Activities Report
Atlantic Region Adaptation Science Activities Report

... erosion and flooding. This places dykelands, coastal populations and their infrastructure and industries at risk. Trends in hydrologic data are already beginning to appear in New Brunswick hydrometric records to support the predictions of local climate scenarios developed using statistical downscali ...
Belanger OLLI week4 slides - Denver Climate Study Group
Belanger OLLI week4 slides - Denver Climate Study Group

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reducing black carbon emissions
reducing black carbon emissions

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Climate Change in Turkmenistan - Grand Valley State University
Climate Change in Turkmenistan - Grand Valley State University

... these institutional transformations, affecting vegetation–climate feedbacks at multiple spatial and temporal scales. According to the Intergovernmental Panel on Climate Change’s (IPCC) Fourth Assessment Report (AR4), developing nations and arid regions of the world are particularly vulnerable to cli ...
Coherence among the Northern Hemisphere land, cryosphere, and
Coherence among the Northern Hemisphere land, cryosphere, and

... or the interannual changes in the trends are negligible. Our analysis suggests that sea ice decline-related CO2 release may outweigh increased CO2 uptake through longer growing seasons and higher temperatures. The direct effects of variation in solar radiation and leading teleconnections, at least i ...
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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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