105 research outputs found
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Climate Change: Science and Policy Implications
This report provides an overview of the science and policy implications of Climate Change
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Greenhouse Gas Pledges by Parties to the United Nations Framework Convention on Climate Change
This report briefly summarizes the existing commitments and pledges of selected national and regional governments to limit their greenhouse gas (GHG) emissions as contributions to the global effort
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Climate Change Adaptation by Federal Agencies: An Analysis of Plans and Issues for Congress
This report reviews current actions (as of January 2015) of selected federal departments and agencies to adapt their own missions, infrastructure, operations, and personnel to projected climate change plans
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Climate Change Science: Key Points
This report discusses the climate change science, that though often is portrayed as controversial there is a broad scientific agreement over many points. The report provides data on long-term temperature observations, estimate of human-related versus solar contributions to global temperature change over the 20th century, estimated top 20 emitting nations of greenhouse gases in 2010, and sea ice extent in Arctic (September) and Antarctica (April), 1979 to 201
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International Climate Change: A Negotiations Side-by-Side
This report discusses various cooperative international efforts to address the issue of global climate change. The two major international agreements discussed in a side-by-side comparison are the 1997 Kyoto Protocol and the 2010 Copenhagen Accord. The report discusses how many observers are hoping that initiatives carried out under the Copenhagen Accord may help bridge divides between the various tracks and economic groupings established under the Kyoto Protocol
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Are Carbon Dioxide Emissions Rising More Rapidly Than Expected?
At least one recent report and numerous news articles suggest that carbon dioxide (CO2) emissions are rising more rapidly than expected. While CO2 emissions associated with human activities continue to rise -- and may be worthy of alarm because of their influence on climate change -- any short-term comparisons between actual emissions and the Intergovernmental Panel on Climate Change (IPCC) scenarios miss the mark. This report analyzes this issue and the issues associated with IPCC scenarios and trajectories. It also describes the importance of monitoring CO2 emissions and analyzing the factors and forces behind increasing CO2 emissions
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Status of the Copenhagen Climate Change Negotiations
This report evaluates the Copenhagen climate talks, including the status of the negotiations on the key issues under the formal negotiating tracks and the provisions of the Copenhagen Accord, and draws implications for the implementation of actions in developing countries
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International Climate Change Financing: Needs, Sources, and Delivery Methods
This report discusses the domestic and international efforts to increase foreign assistance to address climate change. Proponents maintain that such assistance could help promote low-emissions and high-growth economic development in lower-income countries, while simultaneously protecting the more vulnerable countries from the effects of a changing climate. The fundamental dispute concerning international financing for climate change centers upon who should pay for it and how
Parallaxes and Infrared Photometry of three Y0 dwarfs
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.We have followed up the three Y0 dwarfs WISEPA J041022.71+150248.5, WISEPA J173835.53+273258.9 and WISEPC J205628.90+145953.3 using the UKIRT/WFCAM telescope/instruments. We find parallaxes that are more consistent and accurate than previously published values. We estimate absolute magnitudes in photometric pass-bands from to and find them to be consistent between the three Y0 dwarfs indicating the inherent cosmic absolute magnitude spread of these objects is small. We examine the MKO magnitudes over the four year time line and find small but significant monotonic variations. Finally we estimate physical parameters from a comparison of spectra and parallax to equilibrium and non-equilibrium models finding values consistent with solar metallicity, an effective temperature of 450-475\,K and log~g of 4.0-4.5.Peer reviewe
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Global Climate Change and Wildlife
Recently projected climate changes could have widespread effects on wildlife species. These effects might be positive or negative, depending on the species. Some effects might include extinction, range shifts, mismatches in phenology (timing of pollination, flowering, etc.), and population changes. If the effects of climate change are widespread, there is uncertainty on how wildlife will adapt. Some suggest that evolution and migration will enable species to adapt, whereas others contend that adaptation will be minimal because of limited habitat, and changes in climate that may occur may rapidly than adaptation can respond
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