Report Overview


Climate Change 2013: The Physical Science Basis

The Working Group I contribution to the IPCC Fifth Assessment Report (WGI AR5) provides a comprehensive assessment of the physical science basis of climate change, drawing on the scientific literature accepted for publication up to 15 March 2013. The WGI AR5 Summary for Policymakers was approved at the Twelfth Session of Working Group I, held in Stockholm, Sweden, from 23 to 26 September, 2013. The Session also accepted the underlying scientific and technical assessment.


Summary For Policymakers 2.3MB



Chapter / Annex Downloads

Summary Volume (SPM, TS & FAQs) Translations into UN languages

Summary Volume (SPM, TS & FAQs) Translations into other languages

SPM Translations into UN languages

SPM Translations into other languages


Copies of the printed report are available from Cambridge University Press









The designations employed and the presentation of material on maps do not imply the expression of any opinion whatsoever on the part of the Intergovernmental Panel on Climate Change concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.