Our Changing Planet: The FY 2002 U.S. Global Change Research Program

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Description

This document, which is produced annually, describes the activities and plans of the U.S. Global Change Research Program (USGCRP), which was established in 1989 and authorized by Congress in the Global Change Research Act of 1990. Strong bipartisan support for this inter-agency program has resulted in more than a decade's worth of scientific accomplishment. "Because there is considerable uncertainty in current understanding of how the climate system varies naturally and reacts to emissions of greenhouse gases and aerosols, current estimates of the magnitude of future warming should be regarded as tentative and subject to future adjustments (either upward or downward). ... continued below

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74 p. : col. ill.

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Subcommittee on Global Change Research, Committee on Environment and Natural Resources of the National Science and Technology Council September 2001.

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This text is part of the collection entitled: Environmental Policy Collection and was provided by UNT Libraries to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 101 times . More information about this text can be viewed below.

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  • Main Title: Our Changing Planet: The FY 2002 U.S. Global Change Research Program
  • Series Title: Our Changing Planet

Description

This document, which is produced annually, describes the activities and plans of the U.S. Global Change Research Program (USGCRP), which was established in 1989 and authorized by Congress in the Global Change Research Act of 1990. Strong bipartisan support for this inter-agency program has resulted in more than a decade's worth of scientific accomplishment. "Because there is considerable uncertainty in current understanding of how the climate system varies naturally and reacts to emissions of greenhouse gases and aerosols, current estimates of the magnitude of future warming should be regarded as tentative and subject to future adjustments (either upward or downward). Reducing the wide range of uncertainty inherent in current model predictions of global climate change will require major advances in understanding and modeling of both (1) the factors that determine atmospheric concentrations of greenhouse gases and aerosols, and (2) the so-called 'feedbacks' that determine the sensitivity of the climate system to a prescribed increase in greenhouse gases. There is also a pressing need for a global system designed for monitoring climate. Climate projections will always be far from perfect. Confidence limits and probabilistic information, with their basis, should always be considered as an integral part of the information that climate scientists provide to policy- and decision-makers. Without them, the IPCC SPM [Summary for Policymakers] could give the impression that the science of global warming is 'settled,' even though many uncertainties still remain. The emission scenarios used by the IPCC provide a good example. Human dimensions will almost certainly alter emissions over the next century. Because we cannot predict either the course of human populations, technology, or societal transitions with any clarity, the actual greenhouse gas emissions could either be greater or less than the IPCC scenarios. Without an understanding of the sources and degree of uncertainty, decision makers could fail to define the best ways to deal with the serious issue of global warming.

Physical Description

74 p. : col. ill.

Notes

[archived: 2009-09-16]

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Environmental Policy Collection

The Environmental Policy Collection contains reports, policy documents, and media selected from local, statewide, national, and international organizations; government and private agencies; and scientific and research institutions. The collection also contains theses and dissertations relevant to environmental policy.

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  • September 2001

Added to The UNT Digital Library

  • March 16, 2010, 3:46 p.m.

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  • July 14, 2017, 11:19 p.m.

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Subcommittee on Global Change Research, Committee on Environment and Natural Resources of the National Science and Technology Council. Our Changing Planet: The FY 2002 U.S. Global Change Research Program, text, September 2001; Palisades, New York. (digital.library.unt.edu/ark:/67531/metadc11929/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .