Climate Change 2007: Working Group I: The Physical Science Basis (Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change)

The Working Group I contribution to the IPCC Fourth Assessment Report describes progress in understanding the human and natural drivers of climate change, observed climate change, climate processes and attribution, and estimates of projected future climate change. It builds upon past IPCC assessments and incorporates new findings from the past six years of research.

The report confirms that our scientific understanding of the climate system and its sensitivity to greenhouse gas emissions is now richer and deeper than ever before. The chapters forming the bulk of this report describe scientists’ assessment of the state of knowledge in their respective fields. The chapters were written by 152 coordinating lead authors and lead authors from over 30 countries and were reviewed by over 600 experts. A large number of government reviewers also contributed review comments. 

Publication Date: 2007

Authors or Affiliated Users:

  • S. Solomon
  • D. Qin
  • M. Manning
  • Z. Chen
  • M. Marquis
  • K.B. Averyt
  • M. Tignor
  • H.L. Miller

Related Organizations:

  • The Intergovernmental Panel on Climate Change (IPCC)

Resource Category:

Resource Types:

  • Assessment
  • Climate science


  • Air temperature
  • Precipitation changes
  • Sea-level rise
  • Water temperatures

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