Papers of the Intergovernmental Panel on Climate Change

From the collections of Harvard Library

Curator’s Note: We are pleased to launch this new version of the Harvard Library’s IPCC collections portal. The previous version (AR4) has been expanded to include new, “born-digital” archival collections from AR5 as well as bring print collections from TAR (“AR3”) and SAR (“AR2”) to the web. As we complete the transition to the new website, additions and minor revisions continue. We appreciate your patience. In the meantime, all content to be added to this portal may be found at the Internet Archive links below.


This portal provides access to digital records compiled and consolidated by the U.S.-hosted Working Groups and archived at the Environmental Science and Public Policy Archives (ESPPA) at the Harvard Library for the following cycles:

Refer to the IPCC Secretariat web site ( for the rules and procedures governing the process, including innovations intended to enhance openness and transparency.

To the extent possible, given evolution of the process, a uniform set of files has been captured on assessment-specific pages. Additional records—hardcopy and digital—are also part of the IPCC Collection maintained at the Environmental Science and Public Policy Archives, Harvard Library.


Jointly established by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) in 1988, the Intergovernmental Panel on Climate Change (IPCC) prepares comprehensive and up-to-date assessments of policy-relevant scientific, technical, and socio-economic information relevant for understanding the scientific basis of climate change, potential impacts, and options for mitigation and adaptation. The IPCC Collection at the ESPP Archives spans certain work of the Second through Fifth Assessment Report cycles; the 1990 First Assessment Report (FAR, “AR1”) was generated via an earlier mechanism, and no records were maintained by a dedicated technical support unit (TSU).(More)


Special thanks go to the United States-based Technical Support Units that compiled these records and supported the Working Groups in their creation. (More)

Research Assistance

Environmental Research Librarian George E. Clark is available for research assistance via e-mail.