The Intergovernmental Panel on Climate Change Online Resources

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Fourth Assessment Report (Climate Change 2007):

The Physical Science Basis

Impacts, Adaptation, and Vulnerability

Mitigation of Climate Change

Third Assessment Report (Climate Change 2001):

Synthesis Report

The Scientific Basis

Impacts, Adaptation, and Vulnerability

Mitigation

The AR4 Synthesis Report	The Physical Science Basis	Impacts, Adaptation and Vulnerability	Mitigation of Climate Change

The AR4 Synthesis Report
	Full Report Summary for Policymakers
Working Group I Report "The Physical Science Basis"
Working Group I Contribution to the Fourth Assessment Report of the IPCC Intergovernmental Panel on Climate Change. IPCC Fourth Assessment Report on scientific aspects of climate change for researchers, students, and policymakers. Published October 2007.
	Full Report Summary for Policymakers Order at GCRIO
Working Group II Report "Impacts, Adaptation and Vulnerability"
Working Group II contribution to the Fourth Assessment Report of the IPCC Intergovernmental Panel on Climate Change. IPCC Fourth Assessment Report on climate change impacts, adaptation and vulnerability for researchers, students, policymakers. Published March 2008
	Full Report Summary for Policymakers Order at GCRIO
Working Group III Report "Mitigation of Climate Change"
Working Group III contribution to the Fourth Assessment Report of the IPCC Intergovernmental Panel on Climate Change. IPCC Fourth Assessment Report on the mitigation of climate change for researchers, students, and policymakers. Published January 2008.
	Full Report Summary for Policymakers Order at GCRIO

Announcements are posted here as part of an overall effort to inform the public about U.S. participation in the IPCC.

Fourth Assessment Report:
Climate Change 2007

Climate Change 2007: The Physical Science Basis

Frequently Asked Questions from the IPCC's "Climate Change 2007: The Physical Science Basis." Nineteen FAQs (each as a separate PDF file) from the Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, first published in 2007 (link posted 29 Aug 2007)

Now available from Working Group I (links posted 5 July 2007):

• Powerpoint files containing the figures from the Summary for Policymakers (SPM), Technical Summary (TS), and individual chapters of Working Group I's contribution to the Fourth Assessment Report (Climate Change 2007: The Physical Science Basis)
• Files containing reviewers' comments and the authors' responses to those comments

Full report.  On 27 April 2007, the final versions of the Preface, Summary for Policy Makers, Technical Summary, all chapters, and annexes (Glossary, List of authors, List of reviewers, List of acronyms) were made publicly available. (link posted 30 April 2007)

Summary for Policymakers [PDF].  Contribution of Working Group I to the Fourth Assessment Report of the
Intergovernmental Panel on Climate Change.  Approved at the 10th Session
of Working Group I of the IPCC, Paris, February 2007. (link posted 2 Feb 2007)

U.S. Climate Change Science Program Provides Key Contributions to IPCC Fourth Assessment.  Press release (dtd 16 February 2007) from the U.S. CCSP. (link posted 16 Feb 2007)

What's in the 2007 IPCC Working Group I Summary for Policymakers on the Physical Science of Climate Change?  Summary (dtd 2007) from the University Corporation for Atmospheric Research.

Ralph Cicerone, president of the National Academy of Science, discusses IPCC Working Group I Summary for Policy Makers [video].  Bob Ryan of NBC4 (Washington, DC) interviews Dr Cicerone.

Congressional Hearing. The State of Climate Change Science 2007: The Findings of the Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), Working Group I Report. Hearing (scheduled for 8 February 2007) before the U.S. Congress, House of Representatives, Committee on Science. See hearing charter [PDF]. See also Chairman Comments on IPCC Report--Committee Will Be First to Hear from Authors of Report, press release (dtd 2 Feb 2007) issued by the committee. (links updated 5 Feb 2007).

IPCC Fourth Assessment Report.  Site maintained by the UK Met's Hadley Centre.

Intergovernmental Panel on Climate Change Finalizes Report.  Press release (dtd 2 Feb 2007) from the Office of Science and Technology Policy, Executive Office of the President. (link posted 2 Feb 2007)

NOAA Support for IPCC: People, Expertise, Technology.  Press release (dtd 2 Feb 2007) from the National Oceanic and Atmospheric Administration. (link posted 2 Feb 2007)

NCAR Scientists Available to Discuss New IPCC Report on Climate Change.  Press release (dtd 25 January 2007) from the National Center for Atmospheric Research and the University Corporation for Atmospheric Research Office of Programs. (link posted 2 Feb 2007)

Statement of Secretary Carlos M. Gutierrez on Today's Release of the Intergovernmental Panel on Climate Change Report.  Press release (2 Feb 2007) from the U.S. Department of Commerce. (link posted 5 Feb 2007)

U.S. Plays A Leading Role In Advancing Climate Science And Addressing The Issue of Global Climate Change [PDF].   Fact sheet (dated 2 Feb 2007) posted by the U.S. Department of Energy.

Intergovernmental Panel on Climate Change Finalizes Report. Press release (2 Feb 2007) from NASA.   

Available upon request: U.S. Government collation in support of the Expert and Government Review of the Intergovernmental Panel on Climate Change (IPCC) Working Group I Fourth Assessment Report.  To obtain a copy, please submit a request to . (posted 13 June 2006).

Tenth Session of Working Group I of the Intergovernmental Panel on Climate Change: 29 January - 1 February 2007.  Vol. 12, No. 319 (4 February 2007) of the Earth Negotiations Bulletin.  Summary Published by the International Institute for Sustainable Development (IISD).  (link posted 26 April 2007)

Report: Humans 'Very Likely' Cause of Climate Change. Segment from National Public Radio's Talk of the Nation, 2 February 2007.  Guest:  Kevin Trenberth, senior scientist and head of the Climate Analysis Section for the National Center for Atmospheric Research

Climate Change 2007: Impacts, Adaptation, and Vulnerability

Climate Change 2007: Impacts, Adaptation and Vulnerability. The full Working Group II contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. The report includes Chapter 14 on North America. (link posted 6 August 2007)

Summary for Policymakers [PDF]. Contribution of Working Group II to the Fourth Assessment Report of the
Intergovernmental Panel on Climate Change.  Approved at the 8th Session
of Working Group II of the IPCC, Brussels, Belgium, April 2007.  SPM figures and tables (high resolution):

What's in the 2007 IPCC Working Group II Summary for Policymakers on Climate Change Impacts?   Summary (dtd 2007) from the University Corporation for Atmospheric Research.

The State of Climate Change Science 2007, Pt II.  Hearing of the U.S. Congress, House of Representatives, Committee on Science and Technology on the Working Group II report, held on 17 April 2007.   See hearing charter.  Witnesses include (links posted 17 April 2007):

• Dr. Virginia Burkett, U.S. Geological Society (USGS) Global Change Science Coordinator
  
• Dr. William E. Easterling, Director of the Pennsylvania State University Institutes of the Environment
  
• Dr. Roger Pulwarty, Research Associate at National Oceanic and Atmospheric Administration’s (NOAA) Climate Diagnostics Center
  
• Dr. Cynthia Rosenzweig, Senior Research Scientist at NASA Goddard Institute for Space Studies
  
• Dr. Stephen H. Schneider, Co-Director of the Center for Environmental Science and Policy (CESP) and the Interdisciplinary Program in Environment and Resources (IPER) at Stanford University
  
• Dr. Shardul Agrawala, Visiting Research Scholar in the Program in Science, Technology and Environmental Policy at Princeton University

See also: U.S. Government Scientists Urge Preparation for Climate Change: Congress considers effects of global warming, posting (dtd 23 April 2007) by the U.S. Department of State.

Eighth Session of Working Group II of the Intergovernmental Panel on Climate Change: 2-6 April 2007.  Vol. 12, No. 320 (8 April 2007) of the Earth Negotiations Bulletin.  Summary Published by the International Institute for Sustainable Development (IISD).  (link posted 26 April 2007)

Latest IPCC report highlights need for integrated climate/human behavior models.  Press release (dtd 6 April 2007) from the International-Geosphere Biosphere Programme. (posted 10 April 2007)

IPCC Working Group II press conference.  Held on 6 April 2007 in Brussels, Belgium.

Press Briefing on the Second International Panel on Climate Change.  Via Teleconference, 6 April 2007, 6:04 A.M. EDT.  Participants: Dr. Sharon Hays, White House Office of Science and Technology Policy Jim Connaughton, Chairman, White House Council on Environmental Quality.

International Scientific Panel Approves Report on Climate Change Impacts, Adaptation and Vulnerability.  Panel indicates high confidence that “anthropogenic warming over the last three decades has had a discernible influence on many physical and biological systems” Press release (dated 6 April 2007) from the U.S. Climate Change Science Program. 

Worldwide Impact from Climate Change Predicted.  Press release (dtd 6 April 2007) from the U.S. Department of State. (link posted 18 April 2007)

Intergovernmental Panel on Climate Change Finalizes Summary Report.  Press release (dtd 6 April 2007) from the White House Press Office.

NOAA Leads Climate Impact and Adaptation Activities.  Agency Contributes to Scientific Foundation of IPCC. Press release (dtd 5 April 2007) from the National Oceanic and Atmospheric Administration.

Recent press releases from the National Science Foundation related to the impacts of climate change:

• New Modeling Study Forecasts Disappearance of Existing Climate Zones (27 March 2007).
• Northwest Atlantic Ocean Ecosystems Experiencing Large Climate-Related Changes (22 February 2007)

Recent postings from NASA related to the impacts of climate change:

• Sea Level Rise, After the Ice Melted and Today. Science brief (dated January 2007) from Goddard Institute for Space Studies.

Other recent postings related to climate change impacts and based on federally supported research:

• New Study Shows Climate Change Likely to Lead to Periods of Extreme Drought in Southwest North America.  Press release (dtd 6 April 2007) from Lamont-Doherty Earth Observatory. 

NCAR Scientists Available to Discuss New IPCC Report on Climate Change Impacts.  Press release (dtd 23 March 2007) from the National Center for Atmospheric Research (NCAR).

National Public Radio's Science Friday.  Hour One, 6 April 2007.  The broadcast includes discussion of the IPCC WGII report.  Among the guests were Linda Mearns, Senior Scientist and Institute for the Study of Society and Environment at the National Center for Atmospheric Research, Boulder, Colorado. 

U.N. Climate Report Predicts Droughts, Flooding.  Segment from National Public Radio's All Things Considered, 6 April 2007. 

Others sites:

• UK Met Office, IPCC Fourth Assessment Report.

Available upon request: U.S. Government collation in support of the Expert and Government Review of the Intergovernmental Panel on Climate Change (IPCC) Working Group II Fourth Assessment Report.  To obtain a copy, please submit a request to .

Climate Change 2007: Mitigation of Climate Change

Full Report.  Pre copy-edit version.

Summary for Policymakers[PDF].  Contribution of Working Group III to the Fourth Assessment Report of the
Intergovernmental Panel on Climate Change.  Approved at the 9th Session of Working Group III, 3 May 2007,Bangkok, Thailand. (link posted 4 May 2007).

Press Briefing on the Third Intergovernmental Panel on Climate Change Report on Climate Change.  Harlan Watson, U.S. Senior Climate Negotiator And Special Representative; Jim Connaughton, Chairman, White House Council On Environmental Quality; Stephen Eule, Director Of The Climate Change Technology Program, U.S. Department Of State.  Remarks Via Teleconference.  Transcript from the White House, 4 May 2007.

United States Joins In Approving Summary Report on Climate Change Mitigation.  Media note (4 May 2007) from the U.S. Department of State.

Highlights from Climate Change 2007: Mitigation of Climate Change. Summary for Policy Makers [PDF].  Twelve page summary (dtd 2007) from the Pew Center on Global Climate Change.

U.N. Report Suggests Ways to Cut Carbon Emissions.  Segment from National Public Radio's Morning Edition, 4 May 2007.  Part of Climate Connections, a series produced by National Public Radio and National Geographic.

U.N. Report Focuses on Climate Change Mitigation.  Segment from National Public Radio's Talk of the Nation, 4 May 2007. Guests:

• Elizabeth Malone, staff scientist, Joint Global Change Research Institute, Pacific Northwest National Laboratory and the University of Maryland
• Robert Socolow, professor, Mechanical and Aerospace Engineering, co-director, The Carbon Mitigation Initiative, Princeton University.

Third Assessment Report :

Climate Change 2001: Synthesis Report Full Report [HTML] Summary for Policymakers [HTML]

 

Climate Change 2001: The Scientific Basis Document from Working Group I of the Intergovernmental Panel on Climate Change (IPCC), approved by the Working Group on 20 January 2001. Full Report Summary for Policymakers   Additional information:  Video: Global warming faster than expected -- report.  Report (dtd 22 Jan 2001) from Canada's CBC. U.N. Scientists Warn of Catastrophic Climate Changes. Article (dtd 6 Feb 2001) from National Geographic News @ nationalgeographic.com. (link posted 14 Feb 2001) Sir John Houghton IPCC Co-Chair Co-chair of IPCC: "The rate of warming is far greater than it has been for the last 10,000 years".  Audio file (dtd 22 Jan 2001) from the BBC.  Interview with Sir John Houghton.

 

Climate Change 2001: Impacts, Adaptation, and Vulnerability Document from Working Group II of the Intergovernmental Panel on Climate Change (IPCC), approved by the Working Group in mid-February 2001. Full Report (HTML) Summary for Policymakers (HTML). Full Text.

 

Climate Change 2001:  Mitigation Document from Working Group III of the Intergovernmental Panel on Climate Change (IPCC), approved by the Working Group in early March 2001. Full Report Summary for Policymakers (HTML) Full Text Additional information:  Greenhouse gas cuts are economically feasible, say UN officials.  Press Release (dtd 28 Feb 2001) from the United Nations Environment Programme. (link posted 20 March 2001) U.N. Panel Releases Report on Global Climate Change.  Segment (dtd  7 March 2001) from National Public Radio's Morning Edition. (link posted 20 March 2001)