Dataset
Chapter 2 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for CCB 2.1, Figure 1 v20221114
Abstract
Data for CCB 2.1, Figure 1 from Chapter 2 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).
CCB 2.1 Figure 1 shows global mean surface temperature over the past 60 million years plotted on three time scales and including projections.
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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:
Gulev, S.K., P.W. Thorne, J. Ahn, F.J. Dentener, C.M. Domingues, S. Gerland, D. Gong, D.S. Kaufman, H.C. Nnamchi, J. Quaas, J.A. Rivera, S. Sathyendranath, S.L. Smith, B. Trewin, K. von Schuckmann, and R.S. Vose, 2021: Changing State of 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. 287–422, doi:10.1017/9781009157896.004.
Please also include citations of the related publications provided at the end of this abstract.
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List of data provided
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Global mean surface temperature adjusted to 1850-1900 reference period for:
- 60 to 0.02 Ma ( from Westerhold et al. 2020: 10.1126/science.aba6853)
- 60 to 0.02 Ma (from Hansen et al. 2013: 10.1098/rsta.2012.0294)
- 1 to 0.02 Ma (from Snyder 2016: 10.1038/nature19798)
- 20 to 12 ka (from Shakun et al. 2012: 10.1038/nature10915)
- 12 ka to 1900 CE (from Kaufman et al. 2020: 10.1038/s41597-020-0530-7)
- 1850-2020 CE (from Chapter 2, Figure 2.11c)
- Projections - 2100 from Table 4.5, 2300 from Table 4.9
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Data provided in relation to figure
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Data file: FinalData_CCB2_1_Fig1_DMS.csv contains time series data shown in CCB2.1 Figure 1 for each of the five previously published paleotemperature time series, adjusted to 1850-1900 reference period, plus 1850-2020 from Figure 2.11c.
- Column A: time reference for Westerhold et al., 2020
- Column C: orange line
- Column D: time reference for Hansen et al., 2013
- Column F: grey line
- Column G: time reference for Snyder, 2016.
- Column I: green line
- Column J: time reference for Shakun et al., 2012
- Column L: black line
- Column M: time reference for Kaufman et al., 2020
- Column O: violet line
- Column P: time reference for AR6 assessed mean
- Column R: red line
Ma stands for million years before present
ka represents thousands of years before present.
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Temporal Range of Paleoclimate Data
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This dataset covers a paleoclimate timespan from 60 million years ago to 2020.
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Notes on reproducing the figure from the provided data
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Published data were adjusted to 1850-1900 reference period using values specified in 'ReadMe'.
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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 figure on the IPCC AR6 website
- Link to the report component containing the figure (Chapter 2)
- Link to the Supplementary Material for Chapter 2, which contains details on the input data used in Table 2.SM.1
- Links to related publications listed below
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Related publications for figure datasets
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Please include the following citations of related publications. Relations to individual publications are outlined in the Readme file provided with this data. Links are provided in the Related Documents section of this catalogue record.
Westerhold, T., et.al. An astronomically dated record of Earth’s climate and its predictability over the last 66 million years. SCIENCE, 11 Sep 2020, Vol 369, Issue 6509, pp. 1383-1387, DOI: 10.1126/science.aba6853
Hansen James, Sato Makiko, Russell Gary and Kharecha Pushker 2013 Climate sensitivity, sea level and atmospheric carbon dioxide Phil. Trans. R. Soc. A.3712012029420120294
http://doi.org/10.1098/rsta.2012.0294
Zachos, J., Dickens, G. & Zeebe, R. An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics. Nature 451, 279–283 (2008). https://doi.org/10.1038/nature06588
Shakun, J., Clark, P., He, F. et al. Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation. Nature 484, 49–54 (2012). https://doi.org/10.1038/nature10915
Kaufman, D., McKay, N., Routson, C. et al. Holocene global mean surface temperature, a multi-method reconstruction approach. Sci Data 7, 201 (2020). https://doi.org/10.1038/s41597-020-0530-7
PAGES 2k Consortium. Consistent multidecadal variability in global temperature reconstructions and simulations over the Common Era. Nat. Geosci. 12, 643–649 (2019). https://doi.org/10.1038/s41561-019-0400-0
Gillett, N.P.; Malinina, E.; Kaufman, D.; Neukom, R. (2021): Summary for Policymakers of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure SPM.1 (v20210809). NERC EDS Centre for Environmental Data Analysis, date of citation. doi:10.5285/76cad0b4f6f141ada1c44a4ce9e7d4bd. http://dx.doi.org/10.5285/0b2759059ad6474098e40dad73e0a8ec
Trewin, Blair. (2022). Global temperature time series from IPCC AR6 [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6321535
Zebedee Nicholls, Malte Meinshausen, & Jared Lewis. (2022). AR6 WG1 Plots and Processing (v1.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6386979
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: 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. |
| Data lineage: |
Data produced by Intergovernmental Panel on Climate Change (IPCC) authors and supplied for archiving at the Centre for Environmental Data Analysis (CEDA) by the Technical Support Unit (TSU) for IPCC Working Group I (WGI). |
| Data Quality: |
Data as provided by the IPCC
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| File Format: |
Data are CSV formatted
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Related Documents
Process overview
| Title | Caption for CCB 2.1, Figure 1 from Chapter 2 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6) |
| Abstract | Global mean surface temperature (GMST) over the past 60 million years (60 Myr) relative to 1850–1900 shown on three time scales. Information about each of the nine paleo reference periods (blue font) and sections in AR6 that discuss these periods are listed in Cross-Chapter Box 2.1 Table 1. Grey horizontal bars at the top mark important events. Characteristic uncertainties are based on expert judgement and are representative of the approximate midpoint of their respective time scales; uncertainties decrease forward in time. GMST estimates for most paleo reference periods (Figure 2.34) overlap with this reconstruction, but take into account multiple lines of evidence. Future projections span the range of global surface air temperature best estimates for SSP1–2.6 and SSP5–8.5 scenarios described in Section 1.6. Range shown for 2100 is based on CMIP6 multi-model mean for 2081–2100 from Table 4.5; range for 2300 is based upon an emulator and taken from Table 4.9. Further details on data sources and processing are available in the chapter data table (Table 2.SM.1). |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
No variables found.
Temporal Range
0001-01-01T00:00:00
2020-12-31T12:00:00
Geographic Extent
90.0000° |
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-180.0000° |
180.0000° |
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-90.0000° |