Download or read book Attribution of Greenhouse Gas Emissions Concentrations and Radiative Forcing written by I. G. Enting and published by . This book was released on 1998 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document presents some key results from a CSIRO research project undertaken for Environment Australia to examine policy implications of greenhouse gas targets. The background to this work is: the observed increase in atmospheric CO2 over the industrial period; scientific assessments that this will cause significant climate change; the United Nations Framework Convention on Climate Change (FCCC), and the annual Conferences of parties (of the FCCC) in Berlin 1995, Geneva 1996 and Kyoto 1997. The aim of the project was to provide information for policymakers in the period prior to the Third Conference of Parties in Kyoto in December 1997, and prior to the release of IPCC Technical Paper 4. The present report summarizes the material that was produced by the CSIRO project, and updates the description with relevant references to Technical Paper 4, and the new context defined by the Kyoto Protocol. Additional information is given on the attribution of concentrations and radiative forcing, giving the partitioning of emissions between various groups of nations.
Download or read book Scenarios of Greenhouse Gas Emissions and Atmospheric Concentrations written by and published by . This book was released on 2007 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change Science High Quality Greenhouse Gas Emissions Data are a Cornerstone of Programs to Address Climate Change written by John Stephenson and published by DIANE Publishing. This book was released on 2009-06 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elevated levels of greenhouse gases in the atmosphere and the resulting effects on the earth's climate could have significant impacts in the U.S. and internationally. The U.S. Congress is considering proposals to limit greenhouse gas emissions using market-based mechanisms that would place a price on emissions. A greenhouse gas mitigation program requires an understanding of the emissions sources of 6 major greenhouse gases -- carbon dioxide, methane, nitrous oxide, and several synthetic gases. This testimony focuses on: (1) the importance of quality data on emissions in the context of a program intended to limit greenhouse gas emissions; and (2) key considerations in developing reliable data on greenhouse gas emissions. Illus.
Download or read book Radiative Forcing of Climate Change written by National Research Council and published by National Academies Press. This book was released on 2005-03-25 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Changes in climate are driven by natural and human-induced perturbations of the Earth's energy balance. These climate drivers or "forcings" include variations in greenhouse gases, aerosols, land use, and the amount of energy Earth receives from the Sun. Although climate throughout Earth's history has varied from "snowball" conditions with global ice cover to "hothouse" conditions when glaciers all but disappeared, the climate over the past 10,000 years has been remarkably stable and favorable to human civilization. Increasing evidence points to a large human impact on global climate over the past century. The report reviews current knowledge of climate forcings and recommends critical research needed to improve understanding. Whereas emphasis to date has been on how these climate forcings affect global mean temperature, the report finds that regional variation and climate impacts other than temperature deserve increased attention.
Download or read book Policy Implications of Greenhouse Warming written by National Academy of Engineering and published by National Academies Press. This book was released on 1991-02-01 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Readily accessible to any interested reader, this volume offers an analysis of the major issues surrounding greenhouse warming and presents the authoring panel's recommendations for U.S. policy. Recommendations address a wide range of issues, including energy policy; deforestation; human population growth; the appropriate role of the United States in an international strategy; and needed research on scientific, economic, and social questions. Policy Implications of Greenhouse Warming analyzes scientific understanding of greenhouse gas accumulation and its effect on climate; prospects for human, animal, and plant adaptation to rising global temperatures; and options for mitigating the effects of greenhouse gas emissions.
Download or read book A Plan for a Research Program on Aerosol Radiative Forcing and Climate Change written by National Research Council and published by National Academies Press. This book was released on 1996-05-17 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book recommends the initiation of an "integrated" research program to study the role of aerosols in the predicted global climate change. Current understanding suggest that, even now, aerosols, primarily from anthropogenic sources, may be reducing the rate of warming caused by greenhouse gas emissions. In addition to specific research recommendations, this book forcefully argues for two kinds of research program integration: integration of the individual laboratory, field, and theoretical research activities and an integrated management structure that involves all of the concerned federal agencies.
Download or read book Policy Implications of Greenhouse Warming written by National Academy of Engineering and published by National Academies Press. This book was released on 1992-02-01 with total page 945 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global warming continues to gain importance on the international agenda and calls for action are heightening. Yet, there is still controversy over what must be done and what is needed to proceed. Policy Implications of Greenhouse Warming describes the information necessary to make decisions about global warming resulting from atmospheric releases of radiatively active trace gases. The conclusions and recommendations include some unexpected results. The distinguished authoring committee provides specific advice for U.S. policy and addresses the need for an international response to potential greenhouse warming. It offers a realistic view of gaps in the scientific understanding of greenhouse warming and how much effort and expense might be required to produce definitive answers. The book presents methods for assessing options to reduce emissions of greenhouse gases into the atmosphere, offset emissions, and assist humans and unmanaged systems of plants and animals to adjust to the consequences of global warming.
Download or read book Radiative Forcings of Well Mixed Greenhouse Gases written by Brendan Byrne and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A change in the atmospheric inventory of a greenhouse gas produces a radiative forcing on the atmosphere which results in climatic change. Thus to understand climate change resulting from perturbations to atmospheric greenhouse gas concentrations it is necessary to quantify the radiative forcing. Here, radiative forcings are presented for large changes in atmospheric CO2, CH4, and N2O in the modern atmosphere and large changes in atmospheric CO2, CH4 and 18 other gases for the Archean atmosphere. For the modern Earth, I present new calculations of radiative forcing at very high concentrations of CO2, CH4, and N2O, relevant to extreme anthropogenic climate change and paleoclimate studies. CO2 forcing is calculated over the range 100 ppmv to 50,000 ppmv. CH4, and N2O forcings are calculated over the range 100 ppbv to 100 ppmv. The sensitivity of these calculations to spatial averaging and tropopause definition are examined. I compare our results with the ``simplified expressions'' reported by IPCC, and find significant differences at high greenhouse gas concentrations. I provide new simplified expressions which agree much better with the calculated forcings, and suggest that these expressions be used in place of the IPCC expressions. Additionally, I provide meridionally resolved forcings which may be used to force simple and intermediate complexity climate models. For the Archean Earth, I present new calculations of radiative forcing for CO2 (10^-6 - 1 bar), CH4 (500 ppbv - 10,000 ppmv) and 18 other gases (10 ppbv - 10 ppmv). I aim to provide a set of radiative forcing and overlap calculations which can be used as a standard for comparisons. Radiative forcings are calculated for atmospheres with various N2 inventories (0.5, 1, and 2 bar). The effect of overlap and atmospheric pressure on radiative forcing are examined. The CO2 radiative forcings are consistent with previous work, however, I find significantly more shortwave absorption by CH4 than previously reported which may limit warming above 100 ppmv. For the 18 other gases, I find that significant radiative forcings result from low concentrations (
Download or read book Climate Stabilization Targets written by National Research Council and published by National Academies Press. This book was released on 2011-02-11 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emissions of carbon dioxide from the burning of fossil fuels have ushered in a new epoch where human activities will largely determine the evolution of Earth's climate. Because carbon dioxide in the atmosphere is long lived, it can effectively lock the Earth and future generations into a range of impacts, some of which could become very severe. Emissions reductions decisions made today matter in determining impacts experienced not just over the next few decades, but in the coming centuries and millennia. According to Climate Stabilization Targets: Emissions, Concentrations, and Impacts Over Decades to Millennia, important policy decisions can be informed by recent advances in climate science that quantify the relationships between increases in carbon dioxide and global warming, related climate changes, and resulting impacts, such as changes in streamflow, wildfires, crop productivity, extreme hot summers, and sea level rise. One way to inform these choices is to consider the projected climate changes and impacts that would occur if greenhouse gases in the atmosphere were stabilized at a particular concentration level. The book quantifies the outcomes of different stabilization targets for greenhouse gas concentrations using analyses and information drawn from the scientific literature. Although it does not recommend or justify any particular stabilization target, it does provide important scientific insights about the relationships among emissions, greenhouse gas concentrations, temperatures, and impacts. Climate Stabilization Targets emphasizes the importance of 21st century choices regarding long-term climate stabilization. It is a useful resource for scientists, educators and policy makers, among others.
Download or read book Radiative Forcing of Climate Change written by and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change written by Jane A. Leggett and published by DIANE Publishing. This book was released on 2011 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a print on demand edition of a hard to find publication. Contents: (1) Intro.; (2) Observed Warming and Metrics of Climate Change (CC); (3) Attribution of Observed Changes Due to Greenhouse Gases (GG): Human-Related Influences on CC; Trends in Atmospheric Concentrations of GG; GG Emissions and Growth Globally; (4) Impacts of CC: Extent of Arctic Sea Ice Near Lowest Recorded Levels; Melting of Greenland Ice Sheet; Melting and Thickening of Ice in Antarctica; Some Permanent Ice Fields Not Melting; Contributions of Melting Ice and Warming Oceans to Sea Level Rise; Hydrological Changes in the Western U.S.; (5) Without Further GHG Mitigation Policies, GHG Emissions Will Grow; (6) Future Climate Projections; (7) Abrupt ¿Tipping Points¿ in the Climate System; Projections of Future Impacts. Illus.
Download or read book Temperature Increasing Potentials TIPS for Greenhouse Gases written by Jan Rotmans and published by . This book was released on 1990 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of the Draft Climate Science Special Report written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-06-30 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Global Change Research Program (USGCRP) is moving towards a sustained assessment process that allows for more fluid and consistent integration of scientific knowledge into the mandated quadrennial National Climate Assessment. As part of this process, the USGCRP is developing the Climate Science Special Report (CSSR), a technical report that details the current state-of-science relating to climate change and its physical impacts. The CSSR is intended to focus on climate change in the United States and to inform future USGCRP products. Review of the Draft Climate Science Special Report assesses whether the draft CSSR accurately presents the scientific literature in an understandable, transparent and traceable way; whether the CSSR authors handled the data, analyses, and statistical approaches in an appropriate manner; and the effectiveness of the report in conveying the information clearly for the intended audience. This report provides recommendations for how the draft CSSR could be strengthened.
Download or read book Stabilization of Atmospheric Greenhouse Gases written by John Theodore Houghton and published by . This book was released on 1997 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change Science written by National Research Council and published by National Academies Press. This book was released on 2001-06-28 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The warming of the Earth has been the subject of intense debate and concern for many scientists, policy-makers, and citizens for at least the past decade. Climate Change Science: An Analysis of Some Key Questions, a new report by a committee of the National Research Council, characterizes the global warming trend over the last 100 years, and examines what may be in store for the 21st century and the extent to which warming may be attributable to human activity.
Download or read book Sententiarum insigniorum liber primus tertius written by and published by . This book was released on 170? with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Country Contributions to the Climate Change written by Suvi Monni and published by . This book was released on 2005 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global warming that occurs due to emissions from a country or a country group was studied from two different points of view. Firstly, warming effect caused by Finnish emissions from 1900 to 2100 was assessed using a model that describes removal of greenhouse gases from the atmosphere by pulse response functions, and calculates the radiative forcing caused by an increase in atmospheric concentration. Secondly, Finland's share of global emissions was assessed for the time period during which detailed greenhouse gas inventories were available, i.e. from 1990 to 2003, taking into account uncertainties in emission estimates. The uncertainty estimate was made using literature, measurement data and expert judgement on input parameter uncertainties. Stochastic simulation was used to combine the uncertainties. In addition, uncertainties in different emissions trading schemes were compared at EU level. Greenhouse gases covered by the study were those included in the Kyoto Protocol, i.e. carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), perfluorocarbons (PFCs), hydrofluorocarbons (HFCs) and sulphur hexafluoride (SF6). Sectors covered were energy, industry, transportation, agriculture and waste. LULUCF sectors (land-use, land use change and forestry) were covered more superficially. Finnish greenhouse gas emissions in 2003 were 86 Tg CO2 eq (without LULUCF). According to the results, 95% confidence interval of this figure lies between 82 and 92 Tg CO2 eq. This represents a share of 0.2.0.3% of global emissions. In the same year, Finland's share of global population was 0.1% and share of global GDP 0.4%. The most important contributors to uncertainty were N2O emissions from agricultural soils, N2O from nitric acid production and CH4 from landfills. Inclusion of LULUCF categories in the inventory increased relative uncertainty of net emissions notably (emissions in 2003 were 68 Tg CO2 eq with a 95% confidence interval of 58 to 78 Tg CO2 eq). According to the radiative forcing calculations, forcing caused by Finland will increase from 3 mWm−2 in 1990 to 6.11 mWm−2 by 2100, depending on emission reduction strategies applied, and technological development. In 1990 Finland's share of global radiative forcing was estimated at 0.18% and by 2100 it will decrease to 0.13%, due to increase in global emissions. The results revealed that Finland's share of radiative forcing was smaller than the share of emissions. This was due to Finland's relatively short emission history. It was concluded that uncertainty in EU emissions trading scheme for CO2 (2005-2007) contains rather small uncertainties (±3% based on uncertainties in inventories), but the extension of emissions trading scheme to cover other sectors or gases is likely to increase the uncertainties (up to 21% in Kyoto emissions trading scheme). Both radiative forcing and uncertainty assessment models developed in the thesis can be used in decision making, e.g. for comparing different emission reduction strategies and for planning of future climate commitments.
