Photograph of a concrete pad where one of the guns was mounted at Battery Kimble in Fort Travis, Texas.

Researchers at NASA and the University of Maryland, Baltimore County (UMBC), studying changes in tropical precipitation patterns, have noted a higher frequency of El Niños and La Niñas over the last 21 years. In addition, when either of those events occur, the world can expect more months with unusually high or low precipitation with droughts more common than floods over land areas.

This Synthesis and Assessment Product focuses on the connection between the scientific ability to predict climate on seasonal scales and the opportunity to incorporate such understanding into water resource management decisions. It directly addresses decision support experiments and evaluations that have used seasonal-to-interannual forecasts and observational data, and is expected to inform (1) decision makers about the relative success of experiences of others who have experimented with these forecasts and data in resource management; (2) climatologists, hydrologists, and social scientists on how to advance the delivery of decision-support resources that use the most recent forecast products, methodologies, and tools; and (3) science and resource managers as they plan for future investments in research related to forecasts and their role in decision support. It is important to note, however, that while the focus of this Product is on the water resources management sector, the findings within this Synthesis and Assessment Product may be directly transferred to other sectors.

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.

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 …

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.

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.

The annual report includes an overview of the diffusion of environmentalism in Japan and the world during FY 2003. The report details the environmental issues and the environmental conservation measures by the Japanese government in FY 2003.

The annual report describes the environment of Japan in FY 2004. It includes an overview on efforts to build a Low Carbon Society, as well as the environmental issues and environmental conservation measures led by the Japanese government.

This proceedings provides possible answer to the question of what social network analysis can contribute to addressing the problem of climate change. In the workshop, social scientists from Japan, the USA, and Europe reported on social network theory, applications and methodology to envision their use for on-the-ground social change regarding carbon management. The earth has always cycled carbon in the atmosphere (mainly as CO2); in the oceans (surface, intermediate waters, deep waters and marine sediments); in terrestrial ecosystems (vegetation, litter and soil); in rivers and estuaries; and in fossil carbon, which is being remobilized by human activities. However, with the rate of fossil fuel burning feeding industrialization, urbanization and transportation and with large scale land clearing, the naturally balanced carbon cycle is in a non-analogous and dangerous state. The participants agreed that current management of the carbon cycle is piecemeal, careless, inconsistent, profligate and shortsighted. Enabled by past and current networks of power, the world has embraced a carbon culture that has spun out of control in the past 100 years. This issue has often been referred to as a problem of scale in the climate change research community (or frames in the social science community). Climate researchers have focused …

This document is an interim committee report based on discussions from the environmental perspective what considerations Japan should abide by as a basis for international negotiations on the climate regime beyond 2012. A wide range of viewpoints are considered.

The Energy Policy Act (EPA) addresses energy production in the United States, including: (1) energy efficiency; (2) renewable energy; (3) oil and gas; (4) coal; (5) Tribal energy; (6) nuclear matters and security; (7) vehicles and motor fuels, including ethanol; (8) hydrogen; (9) electricity; (10) energy tax incentives; (11) hydropower and geothermal energy; and (12) climate change technology. For example, the Act provides loan guarantees for entities that develop or use innovative technologies that avoid the by-production of greenhouse gases. Another provision of the Act increases the amount of biofuel that must be mixed with gasoline sold in the United States.

The Endangered Species Act (ESA) provides a program for the conservation of threatened and endangered plants and animals and the habitats in which they are found. The U.S. Fish and Wildlife Service (FWS) of the Department of the Interior maintains a worldwide list which, as of Feb. 20, 2008, included 1574 endangered species (599 are plants) and 351 threatened species (148 are plants). Species include birds, insects, fish, reptiles, mammals, crustaceans, flowers, grasses, and trees. Anyone can petition FWS to include a species on this list. The law requires federal agencies, in consultation with the U.S. Fish and Wildlife Service and/or the U.S. National Oceanic and Atmospheric Administration Fisheries Service, to ensure that actions they authorize, fund, or carry out are not likely to jeopardize the continued existence of any listed species or result in the destruction or adverse modification of designated critical habitat of such species. The law also prohibits any action that causes a "taking" of any listed species of endangered fish or wildlife. Likewise, import, export, interstate, and foreign commerce of listed species are all generally prohibited.

This Climate Change Science Program Synthesis and Assessment Product addresses current capabilities to integrate observations of the climate system into a consistent description of past and current conditions through the method of reanalysis. In addition, the Product assesses present capabilities to attribute causes for climate variations and trends over North America during the reanalysis period, which extends from the mid-twentieth century to the present. This Product reviews Past Climate Variability and Change in the Arctic and at High Latitudes. Paleoclimate records play a key role in our understanding of Earth's past and present climate system and in our confidence in predicting future climate changes. Paleoclimate data help to elucidate past and present active mechanisms of climate change by placing the short instrumental record into a longer term context and by permitting models to be tested beyond the limited time that instrumental measurements have been available. Recent observations in the Arctic have identified large ongoing changes and important climate feedback mechanisms that multiply the effects of global-scale climate changes. As discussed in this report, paleoclimate data show that land and sea ice have grown with cooling temperatures and have shrunk with warming ones, amplifying temperature changes while causing and responding to …

The annual report summarizes the state of the global environment and development of individual and community efforts in Japan, FY 2002. Also it introduced the environmental issues and environmental conservation measures by the Japanese government.

This law was passed by the Republic of China (Taiwan) to safeguard public health by protecting drinking water resources from pollution by dumping, logging, industry, nuclear waste, ranching, recreation, mineral exploration and extraction, transportation, and other activities.

This law was passed by the government of the Republic of China (Taiwan) to protect the natural environment from some of the negative effects of economic growth.

This law was passed by the government of the Republic of China (Taiwan) to protect human health and the environment by controlling the production and handling of toxic chemicals.

This presentation gives an overview of the University of North Texas (UNT) Library's Digital Projects Unit (DPU) and their digitization initiatives.

This report contains the proceedings of a Roundtable of panelists speaking on the connection between biodiversity and cultural diversity, and on how sustainable solutions for development will benefit both types of diversity.

Poster presented at the 2005 IS&T Archiving Conference. This poster describes issues related to portal building and explores compliance and interoperability issues. It also assesses the current status and the emerging trends in innovative uses of portal technologies and provides an overall scenario.

This executive order establishes guidelines for how federal agencies consume natural resources.

This report is part of the Web-at-Risk project. The Web-at-Risk project is one of eight digital preservation projects funded in 2004 by the Library of Congress. The project is a 3-year collaborative effort of the California Digital Library (CDL), the University of North Texas (UNT), and New York University (NYU). The project will develop a Web Archiving Service that enables curators to build collections of web-published materials. The content of the collections for this project will be largely from US federal and state government agencies, but will also include political policy documents, campaign literature, and information surrounding political movements and labor unions. This report includes the methods, results, discussion, and appendices related to the Web-at-Risk project.

This report is part of the Web-at-Risk project. The Needs Assessment Toolkit created for the Web-at-Risk project describes the project's needs assessment activities and includes data collection tools, which are designated to identify the needs and requirements of curators, web-content producers, and end users with regard to the Web Archive Service. Additionally, information gathered by some of the data collection tools will help to identify curators' requirements for the web crawler and its crawl analyzer tool, which will be developed as part of the project. Each of the assessment activities described in the Needs Assessment Toolkit was designated to follow a collection development framework for web archives. This report contains a data analysis of the survey results. Results from focus group discussions and interviews with content providers and end users are presented in separate reports.