Dataset
Chapter 3 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 3.2 (v20220610)
Abstract
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.
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(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. |
| 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 BADC-CSV formatted
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Related Documents
Process overview
| Title | Caption 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) |
| Abstract | . (a) Comparison of reconstructed and modelled surface temperature anomalies for the Last Glacial Maximum over land and ocean in the Tropics (30°N–30°S). Land-based reconstructions are from Cleator et al. (2020). Ocean-based reconstructions are from Tierney et al. (2020b). Model points are calculated as the difference between Last Glacial Maximum and pre-industrial control simulations of the PMIP3 and PMIP4 ensembles, sampled at the reconstruction data points. (b) Land–sea contrast in global mean surface temperature change for different paleoclimates. Crosses show individual model simulations from the CMIP5 and CMIP6 ensembles. Filled symbols show ensemble means and assessed values. Acronyms are Last Glacial Maximum (LGM), Last Inter Glacial (LIG), mid-Pliocene Warm Period (MPWP), Early Eocene Climatic Optimum (EECO). (c) Upper panel shows time series of volcanic radiative forcing, in W m−2, as used in the CMIP5 (Gao et al., 2008; Crowley and Unterman, 2013; see also Schmidt et al., 2011) and CMIP6 (850 BCE to 1900 CE from Toohey and Sigl (2017), 1850-2015 from Luo (2018)). The forcing was calculated from the stratospheric aerosol optical depth at 550 nm shown in Figure 2.2. Lower panel shows time series of global mean surface temperature anomalies, in °C, with respect to 1850–1900 for the CMIP5 and CMIP6 past 1000 simulations and their historical continuation simulations. Simulations are coloured according to the volcanic radiative forcing dataset they used. The median reconstruction of temperature from PAGES 2k Consortium (2019) is shown in black, the 5–95% confidence interval is shown by grey lines and the grey envelopes show the 1st, 5th, 15th, 25th, 35th, 45th, 55th, 65th, 75th, 85th, 95th, and 99th percentiles. All data in both panels are band-passed, where frequencies longer than 20 years have been retained. Further details on data sources and processing are available in the chapter data table (Table 3.SM.1). |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_EECO_CMIP6_ensemble_mean
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_EECO_CMIP6_individual_models
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_LGM_CMIP6_individual_models
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_LIG_CMIP6_ensemble_mean
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_MH_CMIP6_ensemble_mean
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_MH_nonCMIP_ensemble_mean
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_abrupt4xCO2_CMIP5_ensemble_mean
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_abrupt4xCO2_CMIP5_individual_models
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_instrumental
- units: degrees C
- var_id: 2
- long_name: ann_tas_land_mPWP_nonCMIP_individual_models
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_EECO_CMIP6_ensemble_mean
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_EECO_CMIP6_individual_models
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_LGM_CMIP6_individual_models
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_LIG_CMIP6_ensemble_mean
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_MH_CMIP6_ensemble_mean
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_MH_nonCMIP_ensemble_mean
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_abrupt4xCO2_CMIP5_ensemble_mean
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_abrupt4xCO2_CMIP5_individual_models
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_instrumental
- units: degrees C
- var_id: 1
- long_name: ann_tas_sea_mPWP_nonCMIP_individual_models
Co-ordinate Variables
Temporal Range
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Geographic Extent
90.0000° |
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-180.0000° |
180.0000° |
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-90.0000° |