Climategate — LLMpedia

Climategate
Name	Climategate
Date	November 2009
Location	United Kingdom, United States
Participants	Climate Research Unit, University of East Anglia, Intergovernmental Panel on Climate Change, various scientists
Outcome	Multiple inquiries, public debate, changes to data sharing policies

Contents

Climategate In November 2009 a large cache of private emails and documents from researchers at the Climatic Research Unit at the University of East Anglia was obtained and released, prompting intense scrutiny from actors including the Intergovernmental Panel on Climate Change, the United Nations Framework Convention on Climate Change, and national legislatures such as the United States Congress and the House of Commons of the United Kingdom. The disclosures intersected with major public debates over reports like the Fourth Assessment Report and events such as the 2009 United Nations Climate Change Conference in Copenhagen, becoming central to disputes involving figures tied to the Royal Society, the Met Office, and advocacy groups such as Friends of the Earth and the Competitive Enterprise Institute.

Background and context

The material released originated from the Climatic Research Unit email server at the University of East Anglia, where researchers involved in paleoclimate reconstruction such as Michael E. Mann, Phil Jones, and Raymond S. Bradley collaborated with colleagues at institutions including Columbia University, the Lamont–Doherty Earth Observatory, and the National Center for Atmospheric Research. Their work fed into assessments by the Intergovernmental Panel on Climate Change and informed models developed at centers like the Hadley Centre and datasets maintained by the National Aeronautics and Space Administration and the National Oceanic and Atmospheric Administration. Tensions over proxies such as tree-ring chronologies, methodologies like the hockey stick reconstruction, and datasets compiled for the Fourth Assessment Report had already drawn scrutiny from critics linked to think tanks including the Global Warming Policy Foundation and commentators on platforms affiliated with the BBC, the New York Times, and The Guardian.

In November 2009 a cyber intrusion and subsequent leak transferred thousands of messages and attachments from the Climatic Research Unit server to journalists, bloggers, and analysts associated with outlets such as Watts Up With That?, RealClimate, The Telegraph, The Times (London), and Der Spiegel. The released content included correspondence involving scientists like Phil Jones, Keith Briffa, Tom Wigley, and Jonathan Overpeck, as well as files referencing datasets from the World Meteorological Organization and code used in analyses shared with collaborators at institutions such as the University of Oxford and the University of East Anglia. Opponents of mainstream conclusions, including figures linked to Heartland Institute campaigns and the Senate Committee on Environment and Public Works, seized on phrases from the emails to challenge peer-reviewed studies published in journals like Nature and Science and chapters of the IPCC Fourth Assessment Report.

Multiple institutional and governmental inquiries were launched by bodies such as the University of East Anglia internal review, the House of Commons Science and Technology Committee, the UK Information Commissioner's Office, the Independent Climate Change Email Review led by Sir Muir Russell, and panels convened by the National Science Foundation and the United States Environmental Protection Agency. Investigations by the Science and Technology Committee and reports submitted to the House of Commons examined conduct by individuals including Phil Jones and assessed practices related to data sharing with groups like the Met Office Hadley Centre. Several inquiries, including the report by Sir Muir Russell and reviews by the United States Department of Commerce and the National Research Council, concluded there was no evidence of fraud or scientific misconduct affecting the central findings of paleoclimatology and the IPCC assessments, though they criticized aspects of data management, transparency, and communication.

Scientists at institutions such as University of Cambridge, Princeton University, University of California, Berkeley, and the Scripps Institution of Oceanography defended the robustness of temperature reconstructions and the body of evidence compiled by the Intergovernmental Panel on Climate Change, while calling for improved archival practices and open data policies endorsed by organizations like the World Data Center system and the Royal Society. Public actors from legislative bodies including the United States Congress, advocacy coalitions such as Greenpeace, and conservative commentators at outlets like the Wall Street Journal engaged in heated debate, influencing hearings before the Senate Committee on Environment and Public Works and prompting policy discussions in forums from the European Parliament to national cabinets in Australia and Canada.

Coverage by media organizations including BBC News, The Guardian, The New York Times, The Wall Street Journal, and Fox News varied widely, with investigative pieces, editorials, and opinion columns reprising phrases from the leaked messages and prompting rebuttals from scientific blogs such as RealClimate and Stoat (blog). Commentators associated with think tanks like the American Enterprise Institute and the Cato Institute amplified allegations, while fact-checking by outlets and analyses by scholars at the University of Pennsylvania and the Annenberg Public Policy Center critiqued reporting standards. The resulting controversy influenced public trust metrics tracked in polls by institutions like the Pew Research Center and accelerated calls for transparency from publishers such as Nature Publishing Group and Elsevier.

After the inquiries, institutions including the University of East Anglia, the Met Office, and funding agencies such as the Natural Environment Research Council and the National Science Foundation adopted stricter data archiving, access, and code-sharing policies aligned with principles promoted by the Open Science movement and repositories like the National Centers for Environmental Information and the World Data Center for Paleoclimatology. The episode shaped legislative debates in the United States Congress and regulatory discussions in the European Commission and informed outreach initiatives by the Intergovernmental Panel on Climate Change and scientific societies such as the American Geophysical Union and the European Geosciences Union. It also influenced historiography and scholarship at universities including Harvard University, Yale University, and the LSE, where researchers studied the interaction among science, media, and policy during high-profile controversies.

Category:Climate change controversies