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 Serial/Series Title: Synthesis and Assessment Product
Climate Change and Ecosystems Summary of Recent Findings

Climate Change and Ecosystems Summary of Recent Findings

Date: unknown
Creator: Climate Change Science Program (U.S.)
Description: This fact sheet summarizes information from a recent assessment of possible adaptation options to protect climate-sensitive ecosystems in the United States.
Contributing Partner: UNT Libraries
Water Resources and Climate Prediction: Linking Science with Decisions

Water Resources and Climate Prediction: Linking Science with Decisions

Date: 2008
Creator: U.S. Global Change Research Program
Description: This brochure summarizes research that focuses on the scientific ability to predict climate on seasonal and year-to-year timescales and the opportunity to incorporate such information into water resource management decisions.
Contributing Partner: UNT Libraries
Human Health and Welfare and Climate Change: Summary and Findings of the U.S. Climate Change Science Program

Human Health and Welfare and Climate Change: Summary and Findings of the U.S. Climate Change Science Program

Date: 2008
Creator: U.S. Global Change Research Program
Description: This brochure summarizes a report of the same title. It describes the likely impacts of climate change on human health, and potential adaptation strategies to limit the risks and damages.
Contributing Partner: UNT Libraries
U.S. Climate Change Science Program Synthesis and Assessment Report 3.4: Abrupt Climate Change Summary and Findings

U.S. Climate Change Science Program Synthesis and Assessment Report 3.4: Abrupt Climate Change Summary and Findings

Date: unknown
Creator: U.S. Global Change Research Program
Description: This brochure identifies four types of abrupt climate change that would pose major risks to global health, security, and the economy.
Contributing Partner: UNT Libraries
Climate Models: Frequently Asked Questions about computer climate models and their uses, strengths and limitations

Climate Models: Frequently Asked Questions about computer climate models and their uses, strengths and limitations

Date: 2008
Creator: U.S. Global Change Research Program
Description: This brochure describes methods and technologies for assessing and predicting climate change.
Contributing Partner: UNT Libraries
The Ozone Layer: Ozone Depletion, Recovery in a Changing Climate, and the "World Avoided"

The Ozone Layer: Ozone Depletion, Recovery in a Changing Climate, and the "World Avoided"

Date: 2008
Creator: U.S. Global Change Research Program
Description: This brochure describes the role of ozone in the stratosphere, and the effect it has on ultraviolet light, as well as how the Montreal Protocol and subsequent laws have affected ozone-depleting pollutants in the atmosphere.
Contributing Partner: UNT Libraries
Climate and Airborne Pollutants

Climate and Airborne Pollutants

Date: 2008
Creator: U.S. Global Change Research Program
Description: This brochure provides an overview of how air pollutants have an impact on climate change.
Contributing Partner: UNT Libraries
Reanalysis and Attribution: Understanding How and Why Recent Climate Has Varied and Changed

Reanalysis and Attribution: Understanding How and Why Recent Climate Has Varied and Changed

Date: 2008
Creator: U.S. Global Change Research Program
Description: This brochure discusses climate change, and scientific methods of making climate observations.
Contributing Partner: UNT Libraries
Findings of the U.S. Climate Change Science Program Synthesis and Assessment Report 2.2: The First State of the Carbon Cycle Report: North American Carbon Budget and Implications for the Global Carbon Cycle

Findings of the U.S. Climate Change Science Program Synthesis and Assessment Report 2.2: The First State of the Carbon Cycle Report: North American Carbon Budget and Implications for the Global Carbon Cycle

Date: 2007
Creator: U.S. Global Change Research Program
Description: This brochure describes sources of carbon emissions in North America, and ways to remove those emissions from the atmosphere.
Contributing Partner: UNT Libraries
Uses and Limitations of Observations, Data, Forecasts, and Other Projections in Decision Support for Selected Sectors and Regions

Uses and Limitations of Observations, Data, Forecasts, and Other Projections in Decision Support for Selected Sectors and Regions

Date: August 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This Synthesis and Assessment Product (SAP), Uses and Limitations of Observations, Data, Forecasts, and Other Projections in Decision Support for Selected Sectors and Regions. This is part of a series of 21 SAPs produced by the CCSP aimed at providing current assessments of climate change science to inform public debate, policy, and operational decisions. This SAP focuses on the use of climate observations, data, forecasts, and other projections in decision support.
Contributing Partner: UNT Libraries
Effects of Climate Change on Energy Production and Use in the United States

Effects of Climate Change on Energy Production and Use in the United States

Date: February 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This document, part of the Synthesis and Assessment Products described in the U.S. Climate Change Science Program (CCSP) Strategic Plan. Climate affects the design, construction, safety, operations, and maintenance of transportation infrastructure and systems. The prospect of a changing climate raises critical questions regarding how alterations in temperature, precipitation, storm events, and other aspects of the climate could affect the nation's roads, airports, rail, transit systems, pipelines, ports, and waterways. Phase I of this regional assessment of climate change and its potential impacts on transportation systems addresses these questions for the region of the U.S. central Gulf Coast between Galveston, Texas and Mobile, Alabama. This region contains multimodal transportation infrastructure that is critical to regional and national transportation services. Historical trends and future climate scenarios were used to establish a context for examining the potential effects of climate change on all major transportation modes within the region. Climate changes anticipated during the next 50 to 100 years for the central Gulf Coast include warming temperatures, changes in precipitation patterns, and increased storm intensity. The warming of the oceans and decline of polar ice sheets is expected to accelerate the rate of sea level rise globally. The effects of sea level ...
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The Effects of Climate Change on Agriculture, Land Resources, Water Resources, and Biodiversity in the United States

The Effects of Climate Change on Agriculture, Land Resources, Water Resources, and Biodiversity in the United States

Date: May 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research.
Description: This document is a part of the Synthesis and Assessment Products described in the U.S. Climate Change Science Program Strategic Plan. The report describes how climate affects the design, construction, safety, operations, and maintenance of transportation infrastructure and systems. The prospect of a changing climate raises critical questions regarding how alterations in temperature, precipitation, storm events, and other aspects of the climate could affect the nation's roads, airports, rail, transit systems, pipelines, ports, and waterways. Phase I of this regional assessment of climate change and its potential impacts on transportation systems addresses these questions for the region of the U.S. central Gulf Coast between Galveston, Texas and Mobile, Alabama.
Contributing Partner: UNT Libraries
Impacts of Climate Change and Variability on Transportation Systems and Infrastructure: Gulf Coast Study, Phase I

Impacts of Climate Change and Variability on Transportation Systems and Infrastructure: Gulf Coast Study, Phase I

Date: March 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This document, part of the Synthesis and Assessment Products described in the U.S. Climate Change Science Program (CCSP) Strategic Plan. Climate affects the design, construction, safety, operations, and maintenance of transportation infrastructure and systems. The prospect of a changing climate raises critical questions regarding how alterations in temperature, precipitation, storm events, and other aspects of the climate could affect the nation's roads, airports, rail, transit systems, pipelines, ports, and waterways. Phase I of this regional assessment of climate change and its potential impacts on transportation systems addresses these questions for the region of the U.S. central Gulf Coast between Galveston, Texas and Mobile, Alabama. This region contains multimodal transportation infrastructure that is critical to regional and national transportation services. The significance of various climate factors for transportation systems was assessed.
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Best Practice Approaches for Characterizing, Communicating, and Incorporating Scientific Uncertainty in Decision Making

Best Practice Approaches for Characterizing, Communicating, and Incorporating Scientific Uncertainty in Decision Making

Date: January 2009
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This report discusses the current state of understanding about the characteristics and implications of uncertainty related to climate change and variability to an audience of policymakers, decision makers, and members of the media and general public with an interest in developing a fundamental understanding of the issue.
Contributing Partner: UNT Libraries
Scenarios of Greenhouse Gas Emissions and Atmospheric Concentrations

Scenarios of Greenhouse Gas Emissions and Atmospheric Concentrations

Date: 2007
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This and a companion report constitute one of twenty-one Synthesis and Assessment Products called for in the Strategic Plan for the U.S. Climate Change Science Program. These studies are structured to provide high-level, integrated research results on important science issues with a particular focus on questions raised by decision-makers on dimensions of climate change directly relevant to the U.S. One element of the CCSP's strategic vision is to provide decision support tools for differentiating and evaluating response strategies. Scenario-based analysis is one such tool. The scenarios in this report explore the implications of alternative stabilization levels of anthropogenic greenhouse gases (GHGs) in the atmosphere, and they explicitly consider the economic and technological foundations of such response options. Such scenarios are a valuable complement to other scientific research contained in the twenty-one CCSP Synthesis and Assessment Products. The companion to the research reported here, Global-Change Scenarios: Their Development and Use, explores the broader strategic frame for developing and utilizing scenarios in support of climate decision making.
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Coastal Sensitivity to Sea-Level Rise: A Focus on the Mid-Atlantic Region

Coastal Sensitivity to Sea-Level Rise: A Focus on the Mid-Atlantic Region

Date: January 2009
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This document is part of the Synthesis and Assessment Products described in the U.S. Climate Change Science Program (CCSP) Strategic Plan. The U.S. Government's CCSP is responsible for providing the best science-based knowledge possible to inform management of the risks and opportunities associated with changes in the climate and related environmental systems. To support its mission, the CCSP has commissioned 21 "synthesis and assessment products" (SAPs) to advance decision making on climate change-related issues by providing current evaluations of climate change science and identifying priorities for research, observation, and decision support. This Synthesis and Assessment Product (SAP), developed as part of the U.S. Climate Change Science Program, examines potential effects of sea-level rise from climate change during the twenty-first century, with a focus on the mid-Atlantic coast of the United States. Using scientific literature and policy-related documents, the SAP describes the physical environments; potential changes to coastal environments, wetlands, and vulnerable species; societal impacts and implications of sea-level rise; decisions that may be sensitive to sea-level rise; opportunities for adaptation; and institutional barriers to adaptation.
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Climate Models: An Assessment of Strengths and Limitations

Climate Models: An Assessment of Strengths and Limitations

Date: July 2008
Creator: Climate Change Science Program (U.S.). Subcommittee on Global Change Research.
Description: This Synthesis and Assessment Product (SAP 3.1) focuses on the Climate models. Scientists extensively use mathematical models of Earth's climate, executed on the most powerful computers available, to examine hypotheses about past and present-day climates. Development of climate models is fully consistent with approaches being taken in many other fields of science dealing with very complex systems. These climate simulations provide a framework within which enhanced understanding of climate-relevant processes, along with improved observations, are merged into coherent projections of future climate change. This report describes the models and their ability to simulate current climate.
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Thresholds of Climate Change in Ecosystems

Thresholds of Climate Change in Ecosystems

Date: January 2009
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This Report (SAP 4.2) focuses on the thresholds of Climate Change in Ecosystems. As defined in this Synthesis and Assessment Report, 'an ecological threshold is the point at which there is an abrupt change in an ecosystem quality, property, or phenomenon, or where small changes in one or more external conditions produce large and persistent responses in an ecosystem'.Ecological thresholds occur when external factors, positive feedbacks, or nonlinear instabilities in a system cause changes to propagate in a domino-like fashion that is potentially irreversible. This report reviews threshold changes in North American ecosystems that are potentially induced by climatic change and addresses the significant challenges these threshold crossings impose on resource and land managers. Sudden changes to ecosystems and the goods and services they provide are not well understood, but they are extremely important if natural resource managers are to succeed in developing adaptation strategies in a changing world. The report provides an overview of what is known about ecological thresholds and where they are likely to occur. It also identifies those areas where research is most needed to improve knowledge and understand the uncertainties regarding them. The report suggests a suite of potential actions that land and resource managers ...
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Weather and Climate Extremes in a Changing Climate. Regions of Focus: North America, Hawaii, Caribbean, and U.S. Pacific Islands

Weather and Climate Extremes in a Changing Climate. Regions of Focus: North America, Hawaii, Caribbean, and U.S. Pacific Islands

Date: June 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research.
Description: This document is part of the Synthesis and Assessment Products described in the U.S. Climate Change Science Program (CCSP) Strategic Plan. Changes in extreme weather and climate events have significant impacts and are among the most serious challenges to society in coping with a changing climate. This Synthesis and Assessment Product (SAP 3.3) focuses on weather and climate extremes in a changing climate. Many extremes and their associated impacts are now changing. For example, in recent decades most of North America has been experiencing more unusually hot days and nights, fewer unusually cold days and nights, and fewer frost days. Heavy downpours have become more frequent and intense. Droughts are becoming more severe in some regions, though there are no clear trends for North America as a whole. The power and frequency of Atlantic hurricanes have increased substantially in recent decades, though North American mainland land-falling hurricanes do not appear to have increased over the past century. Outside the tropics, storm tracks are shifting northward and the strongest storms are becoming even stronger. It is well established through formal attribution studies that the global warming of the past 50 years is due primarily to human-induced increases in heat-trapping gases. Such ...
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Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure

Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure

Date: November 2008
Creator: US Climate Change Science Program and the Subcommittee on Global Change Research.
Description: This Synthesis and Assessment Product (SAP 2.4) focuses on the Climate models. Depletion of the stratospheric ozone layer by human-produced ozone-depleting substances has been recognized as a global environmental issue for more than three decades, and the international effort to address the issue via the United Nations Montreal Protocol marked its 20-year anniversary in 2007. Scientific understanding underpinned the Protocol at its inception and ever since. As scientific knowledge advanced and evolved, the Protocol evolved through amendment and adjustment. Policy-relevant science has documented the rise, and now the beginning decline, of the atmospheric abundances of many ozone-depleting substances in response to actions taken by the nations of the world. Projections are for a return of ozone-depleting chemicals (compounds containing chlorine and bromine) to their "pre-ozone-depletion" (pre-1980) levels by the middle of this century for the midlatitudes; the polar regions are expected to follow suit within 20 years after that. Since the 1980s, global ozone sustained a depletion of about 5 percent in the midlatitudes of both the Northern Hemisphere and Southern Hemisphere, where most of the Earth's population resides; it is now showing signs of turning the corner towards increasing ozone. The large seasonal depletions in the polar regions are ...
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Atmospheric Aerosol Properties and Climate Impacts

Atmospheric Aerosol Properties and Climate Impacts

Date: January 2009
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This report critically reviews current knowledge about global distributions and properties of atmospheric aerosols as they relate to aerosol impacts on climate. It assesses possible steps to substantially reduce uncertainties in aerosol radiative forcing estimates.
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Climate Projections Based on Emissions Scenarios for Long-Lived and Short-Lived Radiatively Active Gases and Aerosols

Climate Projections Based on Emissions Scenarios for Long-Lived and Short-Lived Radiatively Active Gases and Aerosols

Date: September 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This report focuses on the Climate Projections Based on Emissions Scenarios. The influence of greenhouse gases and particle pollution on our present and future climate has been widely examined. While both long-lived (e.g., carbon dioxide) and short-lived (e.g., soot) gases and particles affect the climate, other projections of future climate, such as the IPCC reports focus largely on the long-lived gases. This U.S. Climate Change Science Program Synthesis and Assessment Product provides a different emphasis. The authors examine the effect of long-lived greenhouse gases on the global climate based on updated emissions scenarios produced by another CCSP Synthesis and Assessment Product (SAP 2.1a). In these scenarios, atmospheric concentrations of the long-lived greenhouse gases leveled off, or stabilized, at predetermined levels by the end of the twenty-first century (unlike in the IPCC scenarios). However, the projected future temperature changes fall within the same range as those projected for the latest IPCC report. The authors confirm the robust future warming signature and other associated changes in the climate.
Contributing Partner: UNT Libraries
The North American Carbon Budget and Implications for the Global Carbon Cycle

The North American Carbon Budget and Implications for the Global Carbon Cycle

Date: November 2007
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research.
Description: A primary objective of the U.S. Climate Change Science Program (CCSP) is to provide the best possible scientific information to support public discussion, as well as government and private sector decision making, on key climate-related issues. To help meet this objective, the CCSP has identified an initial set of 21 Synthesis and Assessment Products (SAPs) that address its highest priority research, observation, and decision support needs. This report-CCSP SAP 2.2-addresses Goal 2 of the CCSP Strategic Plan: Improve quantification of the forces bringing about changes in the Earth's climate and related systems. The report provides a synthesis and integration of the current knowledge of the North American carbon budget and its context within the global carbon cycle. In a format useful to decision makers, it (1) summarizes our knowledge of carbon cycle properties and changes relevant to the contributions of and impacts upon North America and the rest of the world, and (2) provides scientific information for decision support focused on key issues for carbon management and policy. Consequently, this report is aimed at both the decision-maker audience and to the expert scientific and stakeholder communities.
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Temperature Trends in the Lower Atmosphere: Steps for Understanding and Reconciling Differences

Temperature Trends in the Lower Atmosphere: Steps for Understanding and Reconciling Differences

Date: April 2006
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This Synthesis and Assessment Product is an important revision to the conclusions of earlier reports from the U.S. National Research Council and the Intergovernmental Panel on Climate Change. Previously reported discrepancies between the amount of warming near the surface and higher in the atmosphere have been used to challenge the reliability of climate models and the reality of human-induced global warming. Specifically, surface data showed substantial global-average warming, while early versions of satellite and radiosonde data showed little or no warming above the surface. This significant discrepancy no longer exists because errors in the satellite and radiosonde data have been identified and corrected. New data sets have also been developed that do not show such discrepancies. This Synthesis and Assessment Product is an important revision to the conclusions of earlier reports from the U.S. National Research Council and the Intergovernmental Panel on Climate Change. For recent decades, all current atmospheric data sets now show global-average warming that is similar to the surface warming. While these data are consistent with the results from climate models at the global scale, discrepancies in the tropics remain to be resolved. Nevertheless, the most recent observational and model evidence has increased confidence in our understanding ...
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