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Global Change and the Earth System: A planet under pressure

Description: The PAGES research community works toward improving our understanding of the Earth's changing environment. By placing current and future global changes in a long term perspective, they can be assessed relative to natural variability. Since the industrial revolution, the Earth System has become increasingly affected by human activities. Natural and human processes are woven into a complex tapestry of forcings, responses, feedbacks and consequences. Deciphering this complexity is essential as we… more
Date: 2001
Creator: Global Environmental Change Programmes
open access

Marine Ecosystems and Global Change

Description: The ocean is a vital component of the metabolism of the Earth and plays a key role in global change. In fact, the oceans cover so much of the Earth's surface that our planet has been described as the Water Planet, and it could be argued that its most extensive ecosystems are marine. Marine ecosystems are inextricably involved in the physical, chemical, biological and societal processes of global change. It is impossible to describe and understand the Earth system without understanding the ocean… more
Date: 2003
Creator: Global Ocean Ecosystem Dynamics Project (GLOBEC)
open access

Public Health Service Act

Description: The Safe Drinking Water Act (SDWA) was established to protect the quality of drinking water in the U.S. This law focuses on all waters actually or potentially designed for drinking use, whether from above ground or underground sources. The Act authorizes EPA to establish minimum standards to protect tap water and requires all owners or operators of public water systems to comply with these primary (health-related) standards. The 1996 amendments to SDWA require that EPA consider a detailed risk… more
Date: 1974
Creator: United States. Congress.
open access

Summary for Policymakers: The Economic and Social Dimensions of Climate Change -IPCC Working Group III

Description: This summary report assesses a large part of the existing literature on the socioeconomics of climate change and identifies areas in which a consensus has emerged on key issues and areas where differences exist1. The chapters have been arranged so that they cover several key issues. First, frameworks for socioeconomic assessment of costs and benefits of action and inaction are described. Particular attention is given to the applicability of costbenefit analysis, the incorporation of equity and … more
Date: 1995
Creator: Intergovernmental Panel on Climate Change
open access

Summary for Policymakers: The Science of Climate Change - IPCC Working Group I

Description: Greenhouse gas concentrations have continued to increase. Anthropogenic aerosols tend to produce negative radiative forcings. Climate has changed over the past century. The balance of evidence suggests a discernible human influence on global climate. Climate is expected to continue to change in the future. There are still many uncertainties.
Date: 1995
Creator: Intergovernmental Panel on Climate Change
open access

Toxic Substances Control Act

Description: The Toxic Substances Control Act of 1976 provides EPA with authority to require reporting, record-keeping and testing requirements, and restrictions relating to chemical substances and/or mixtures. Certain substances are generally excluded from TSCA, including, among others, food, drugs, cosmetics and pesticides. TSCA addresses the production, importation, use, and disposal of specific chemicals including polychlorinated biphenyls (PCBs), asbestos, radon and lead-based paint.
Date: unknown
Creator: United States. Congress.
open access

Federal Water Pollution Control Act

Description: The Clean Water Act (CWA) establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters. The basis of the CWA was enacted in 1948 and was called the Federal Water Pollution Control Act, but the Act was significantly reorganized and expanded in 1972. "Clean Water Act" became the Act's common name with amendments in 1977. Under the CWA, EPA has implemented pollution control programs such as setting… more
Date: November 27, 2002
Creator: United States. Congress. House.
open access

Assessment of Knowledge on Impacts of Climate Change - Contribution to the Specification of Art. 2 of the UNFCCC: Impacts on Ecosystems, Food Production, Water and Socio-economic Systems

Description: The purpose of this report is to compile and summarise the present knowledge on impacts of climate change as a basis for a consideration of what may constitute dangerous anthropogenic interference with the climate system under Article 2 of the United Nations Framework Convention on Climate Change (UNFCCC). An attempt will be made to associate projected global mean surface temperature and/or sea level changes with specific identified impacts and effects in order to assist a discussion on the ope… more
Date: November 2003
Creator: Hare, William
open access

WMO Statement on the Status of the Global Climate in 1995

Description: There is continuing international concern about global warming and its potential to cause serious disruption to vulnerable social and economic sectors of society as well as to sustainable development efforts. As recently as December 1995, scientists of the World Meteorological Organization/United Nations Environment Programme (WMO/UNEP) Intergovernmental Panel on Climate Change stated that "the balance of evidence suggests a discernible human influence on global climate", through emissions of g… more
Date: 1995
Creator: World Meteorological Organization
open access

A Strategy for Climate Change Stabilization Experiments with AOGCMs and ESMs

Description: This report outlines a strategy for the new AOGCM/ESM modeling components in terms of aerosols/atmospheric chemistry and carbon cycle/dynamic vegetation components that are under development and implementation in ESMs that involves a proposed experimental design that integrates impacts and scenarios (represented in IPCC WG2 and WG3, respectively) and physical climate science (WG1). We summarize with a suite of recommendations for the joint WGCM, AIMES and IPCC communities.
Date: May 2007
Creator: International Geosphere-Biosphere Programme
open access

Future Climate Change Research and Observations: GCOS, WCRP and IGBP Learning from the IPCC Fourth Assessment Report

Description: Learning from the authors of the IPCC Fourth Assessment Report and its findings to help guide future strategies for climate change observations and research was the key objective of a workshop organised jointly by the Global Climate Observing System (GCOS), the World Climate Research Programme (WCRP), and the International Geosphere-Biosphere Programme (IGBP) in Sydney, Australia, 4-6 October 2007.
Date: 2008
Creator: International Geosphere-Biosphere Programme
open access

NOAA Reports Potent Greenhouse Gas Levels Off

Description: This document provides a summary of a study by NOAA researchers and National Institute for Space Research in the Netherlands. According to the study, one of the atmosphere's most potent greenhouse gases, methane, may now have leveled off. Scientists aren't sure yet if this "leveling off" is just a temporary pause in two centuries of increase or a new state of equilibrium.
Date: November 17, 2003
Creator: NOAA News Online
open access

NOAA Sets the El Niño Prediction Straight

Description: El Niño is an abnormal warming of the ocean temperatures across the eastern tropical Pacific that affects weather around the globe. El Niño episodes usually occur approximately every four-five years. NOAA researchers and scientists are presently monitoring the formation of a possible weak El Niño and predict that the United States could experience very weak-to-marginal impacts late winter to early spring 2002.
Date: September 7, 2001
Creator: NOAA News
open access

Arctic Flora and Fauna: Recommendations for Conservation

Description: This booklet contains a series of recommendations from the Conservation of Arctic Flora and Fauna Working Group. It is intended to serve as a set of strategic guidelines for all parties interested in Arctic conservation.
Date: 2002
Creator: Conservation of Arctic Flora and Fauna (CAFF)
open access

Climate Change: State of Knowledge

Description: This brief report describes that the Earth's climate is predicted to change because human activities are altering the chemical composition of the atmosphere. The buildup of greenhouse gases-primarily carbon dioxide, methane, nitrous oxide and chlorofluorocarbons-is changing the radiation balance of the planet. The basic heat-trapping property of these greenhouse gases is essentially undisputed. However, there is considerable scientific uncertainty about exactly how and when the Earth's climate … more
Date: March 1995
Creator: Environmental division, Office of Science and Technology Policy, Executive Office of the President
open access

Carbon Sequestration - Field Hearing

Description: This brief document contains remarks by Dr. James Mahoney to the U.S Senate Committee on Commerce, Science, and Transportation.
Date: June 6, 2003
Creator: Mahoney, James R.
open access

Clouds in the Balance

Description: This feature article provides a summary of study about the role of clouds in the balance. Until recently, scientists were uncertain whether clouds had an overall net cooling or heating effect on the Earth's climate. But recent studies show that, in the tropics, a "near cancellation" between shortwave cooling and longwave warming exists, which indicates that the amount of incoming radiant energy is roughly equal to the amount of outgoing radiation. However, small changes in tropical cloudiness c… more
Date: October 11, 2001
Creator: Schmidt, Laurie J.
open access

Policy Statements on Data Management for Global Change Research

Description: This document is the final version of the "Data Management for Global Change Research Policy Statements." The overall purpose of these policy statements is to facilitate full open access to quality data for global change research. They were prepared in consonance with the goal of the U.S. Global Change Research Program and represent the U.S. Government's position on the access to global change research data.
Date: July 2, 1991
Creator: Bromley, Allan
open access

Declaration of the Earth Observation Summit

Description: This single page document is a declaration of the participants of the Earth Observation Summit held in Washington DC, adopted on July 31, 2003. An affirmation for the need for timely, quality, long-term, global information as a basis for sound decision making. Also establishes an ad hoc Group on Earth Observations aimed at developing a global observing strategy.
Date: July 31, 2003
Creator: [Earth Observation Summit]
open access

Floods and Drought, USGCRP Seminar, 8 May 1995.

Description: In this USGCRP seminar, issues about the impact of drought and floods in the news and feel it in the cost of goods and services would be discussed. Each year seems to bring with it droughts or floods that cause billions of dollars in economic losses and untold societal disruption to major parts of our nation. (Drought in the Midwest in 1988 and in the Southeast in 1989. Floods in the Mississippi River Basin in 1992 and in California in 1994). Around the world the situation is the same, even wor… more
Date: May 8, 1995
Creator: Sarachik, Edward & Leetma, Ants
open access

Climate Models: How Certain are their Projections of Future Climate Change? USGCRP Seminar, 12 June 1995.

Description: This document provide a brief overview of Dr. Eric J. Barron's talk on the results of the USGCRP-sponsored forum to evaluate the results of model simulations of climate change, a cross-section of leading climate and Earth system modelers and skeptics considered what is known with certainty, what is known with less certainty, and what remains uncertain.
Date: June 12, 1995
Creator: Barron, Eric J.
open access

Climate Change and Human Health, USGCRP Seminar, 10 July 1995.

Description: In this USGRP Seminar, Dr. Epstein discusses the implications of climate change and the emergence of diseases and viruses such as the hantavirus, dengue fever, ebola, cholera, malaria, and eastern equine encephalitis. These signals of global change can be costly to health, commerce, tourism, and transportation.
Date: July 10, 1995
Creator: Epstein, Paul R.
open access

Ice Core Records of Past Climate Changes: Implications for the Future, USGCRP Seminar, 18 September 1995.

Description: This document provides a brief overview of Dr. Thompson's talk on records of changes in climate in general and the most significant implications of the ice core records of past climate changes in particular. Because climate processes that have operated in the past continue to operate today, ice core records are providing very valuable insights. Within the last two decades, long cores of glacial ice have been used to establish and improve the record of past changes in climate. Analysis of ice co… more
Date: September 18, 1995
Creator: Thompson, Lonnie G. & Bender, Michael
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