Data for Figure 3.2 from Chapter 3 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).

Figure 3.2 shows changes in surface temperature for different paleoclimates.

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How to cite this dataset
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When citing this dataset, please include both the data citation below (under 'Citable as') and the following citation for the report component from which the figure originates:
Eyring, V., N.P. Gillett, K.M. Achuta Rao, R. Barimalala, M. Barreiro Parrillo, N. Bellouin, C. Cassou, P.J. Durack, Y. Kosaka, S. McGregor, S. Min, O. Morgenstern, and Y. Sun, 2021: Human Influence on the Climate System. 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. 423–552, doi:10.1017/9781009157896.005.

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Figure subpanels
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The figure has three subpanels, the data provided for all panels in subdirectories named panel_a, panel_b, panel_c

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List of data provided
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For panel (a):
- PMIP3 global temperature anomalies over continents and oceans reconstruction sites
- PMIP4 CMIP6 global temperature anomalies over continents and oceans reconstruction sites
- PMIP4 non-CMIP6 global temperature anomalies over continents and oceans reconstruction sites
- Tierney 2020 reconstructions of marine temperature
- Cleator 2020 reconstructions of continental temperature

For panel (b):
- CMIP5 temperature data for paleoclimate periods
- CMIP6 temperature data for paleoclimate periods
- non-CMIP temperature data for paleoclimate periods
- Instrumental observational and observations from reconstructions

For panel (c):
- Volcanic forcing from TS17, CU12, GRA08
- CMIP6 GMST anomaly with respect to 1850-1900 modelled with TS17 volcanic forcing
- CMIP5 GMST anomaly with respect to 1850-1900 modelled with CU12 volcanic forcing
- CMIP5 GMST anomaly with respect to 1850-1900 modelled with GRA08 volcanic forcing

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Data provided in relation to figure
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- panel_a/temperature_anomalies_scatter_points.csv relates to the scatter points and their standard deviation for panel (a)
- For panel (b) the datasets are stored as following panel_b/temperature_{color}_{marker}_{period}_{model_group}_{additional_info}.csv and relates to the scatter points for panel (b).
- For panel (c) the data is stored in panel_c/gmst_changes_paleo_volcanic_forcings.csv and relates to red, green, blue and black lines on the panel as well as grey shadings.
Additional information about data provided in relation to figure in files headers.

CMIP6 is the sixth phase of the Coupled Model Intercomparison Project.
CMIP5 is the fifth phase of the Coupled Model Intercomparison Project.
PMIP4 is the Paleoclimate Modelling Intercomparison Project phase 4
PMIP3 is the Paleoclimate Modelling Intercomparison Project phase 3

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Temporal Range of Paleoclimate Data
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This dataset covers a paleoclimate timespan from 56 Ma (56 million years ago) to 2010.

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Notes on reproducing the figure from the provided data.
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For panel (a) the error bar should be plotted as anomalies from columns 2/4 +/- standard deviation.

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Sources of additional information
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The following weblinks are provided in the Related Documents section of this catalogue record:
- Link to the report component containing the figure (Chapter 3)
- Link to the Supplementary Material for Chapter 3, which contains details on the input data used in Table 3.SM.1
- Link to the code for the figure, archived on Zenodo
- Link to the figure on the IPCC AR6 website.