This Working Group I contribution to the IPCC’s Fourth Assessment Report (AR4) provides a comprehensive assessment of the physical science of climate change and continues to broaden the view of that science, following on from previous Working Group I assessments. The results presented here are based on the extensive scientific literature that has become available since completion of the IPCC’s Third Assessment Report, together with expanded data sets, new analyses, and more sophisticated climate modelling capabilities.
Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, 2007 Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor and H.L. Miller (eds.) Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.
Translation of the WGI AR4 SPM TS FAQ Volume from English into the other five official languages of the United Nations was done by translators working for the WMO Language, Conference and Publishing Services Department.
A number of countries have undertaken translations of the SPMs into languages that are not official languages of the United Nations. IPCC welcomes these initiatives but would note that the translations have been prepared under the responsibility of the respective country or institutions. The IPCC does not assume any responsibility for the accuracy of these translations into non-UN languages. In working to achieve the widest possible dissemination of IPCC knowledge, the IPCC is pleased to assist in making these translations available.
Section in preparation. Please find the information in: https://archive.ipcc.ch/report/ar4/wg1/
The drafts of the Working Group contribution to the AR4 that were submitted for expert and/or government review, the expert and government review comments received, and the author responses to these comments are available here. These drafts, review comments, and author responses are not the results of the assessment and may not be cited, quoted, or distributed as such. Only the approved and accepted Report may be cited or quoted as the results of the assessment.
SUMMARY PRODUCTS
Summary for Policymakers
Final Draft (FD) – Draft – Comments
Technical Summary
FD – Text – Figures
CHAPTERS
Chapter 1. Historical Overview of Climate Change Science
First Order Draft (FOD) – Draft: Text – Figures / FOD Comments and Responses / Second Order Draft (SOD) – Draft: Text – Figures / SOD Comments and Responses / FD: Text – Figures
Chapter 2. Changes in Atmospheric Constituents and in Radiative Forcing
FOD – Draft: Text – Figures / FOD Comments and Responses / SOD – Draft: Text – Figures (1 – 2) / SOD Comments and Responses / FD: Text – Figures
Chapter 3. Observations: Surface and Atmospheric Climate Change
FOD – Draft: Text – Figures (1 – 2) / FOD Comments and Responses / SOD – Draft: Text – Figures (1 – 2) / SOD Comments and Responses / FD: Text – Figures
Chapter 4. Observations: Changes in Snow, Ice and Frozen Ground
FOD – Draft: Text – Figures / FOD Comments and Responses / SOD – Draft: Text – Figures / SOD Comments and Responses / FD: Text – Figures
Chapter 5. Observations: Oceanic Climate Change and Sea Level
FOD – Draft: Text – Figures / FOD Comments and Responses / SOD – Draft: Text – Figures / SOD Comments and Responses / FD: Text – Figures
Chapter 6. Palaeoclimate
FOD – Draft: Text – Figures / FOD Comments and Responses / SOD – Draft: Text – Figures (1 – 2) / SOD Comments and Responses / FD: Text – Figures
Chapter 7. Couplings Between Changes in the Climate System and Biogeochemistry
FOD – Draft: Text – Figures / FOD Comments and Responses / SOD – Draft: Text – Figures (1 – 2) / SOD Comments and Responses / FD: Text – Figures
Chapter 8. Climate Models and their Evaluation
FOD – Draft: Text – Figures / FOD Comments and Responses / SOD – Draft: Text – Figures / SOD Comments and Responses / FD: Text – Figures
Chapter 9. Understanding and Attributing Climate Change
FOD – Draft: Text – Figures / FOD Comments and Responses / SOD – Draft: Text – Figures (1 – 2) / SOD Comments and Responses / FD: Text – Figures
Chapter 10. Global Climate Projections
FOD – Draft: Text – Figures (1 – 2 – 3) / FOD Comments and Responses / SOD – Draft: Text – Figures (1- 2 – 3 – 4 – 5) / SOD Comments and Responses / FD: Text – Figures
Chapter 11. Regional Climate Projections
FOD – Draft: Text – Figures (1 – 2) / FOD Comments and Responses / SOD – Draft: Text – Figures (1 – 2) / SOD Comments and Responses / FD: Text – Figures