IPCC Working Group I Technical Support Unit; archived by the NERC EDS Centre for Environmental Data Analysis

IPCC AR6 WGI Figure SPM.3 data

The data behind Figure SPM.3 of the IPCC Sixth Assessment Report (Working Group I): the synthesis of assessed observed and attributable regional changes. For each of the 45 inhabited AR6 reference regions, assessed for the region as a whole from the 1950s to the present (the files say "years 1950 to 2021"): the type of observed change (Increase, Decrease, Low agreement in the type of change, or Limited data and/or literature) and the confidence in a human contribution to it (High, Medium, Low due to limited agreement, or Low due to limited evidence). Panel a: hot extremes; panel b: heavy precipitation; panel c: agricultural and ecological drought. Expert assessment categories, not measured magnitudes.

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Numbers published from it

Regions where hot extremes, heavy rain and drought have increased since the 1950s, with the IPCC's confidence in a human contribution (IPCC AR6)

Licence and credit

Licence: CC BY 4.0
What the terms say: “Use of these data is covered by the following licence(s): http://creativecommons.org/licenses/by/4.0/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.”
From the producer's terms, checked 2026-10-12; re-checked automatically every week.
Credit we give: Otto, Zhang & Seneviratne (2023), data for IPCC AR6 WGI Figure SPM.3 (v20221116), NERC EDS Centre for Environmental Data Analysis, doi:10.5285/dc6c126c95b1445d8e66d6b9f62054d4; IPCC, 2021: Summary for Policymakers, in Climate Change 2021: The Physical Science Basis, doi:10.1017/9781009157896.001. CC BY 4.0.
Copy of the raw file: Allowed: we keep a public copy of every version we use.
Cite as: Otto, F.E.L.; Zhang, X.; Seneviratne, S.I. (2023): Summary for Policymakers of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure SPM.3 (v20221116). NERC EDS Centre for Environmental Data Analysis, 03 July 2023. doi:10.5285/dc6c126c95b1445d8e66d6b9f62054d4. IPCC, 2021: Summary for Policymakers. In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 3−32, doi:10.1017/9781009157896.001.

Files

Panel a, hot extremes: for each of the 45 inhabited AR6 regions, the type of observed change since the 1950s and the confidence in human contribution (BADC-CSV).
https://dap.ceda.ac.uk/badc/ar6_wg1/data/spm/spm_03/v20221116/SPM3_panel_a.csv
Panel b, heavy precipitation: the same assessment for each of the 45 regions (BADC-CSV).
https://dap.ceda.ac.uk/badc/ar6_wg1/data/spm/spm_03/v20221116/SPM3_panel_b.csv
Panel c, agricultural and ecological drought: the same assessment for each of the 45 regions (BADC-CSV).
https://dap.ceda.ac.uk/badc/ar6_wg1/data/spm/spm_03/v20221116/SPM3_panel_c.csv

Status

Programme: Final archive of a published assessment figure (CEDA status "Completed", update frequency "Not Planned"). The IPCC Seventh Assessment Report will supersede it.
Updates: Static (final; superseded only by the next IPCC assessment)
Last check: Unchanged since the last fetch (2026-10-25T10:13:42Z)