Dataset
Chapter 4 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 4.31 v20230531
Abstract
Data for Figure 4.31 from Chapter 4 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).
Figure 4.31 shows the projected spatial patterns of change in annual average near-surface temperature (°C) at different levels of global warming
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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:
Lee, J.-Y., J. Marotzke, G. Bala, L. Cao, S. Corti, J.P. Dunne, F. Engelbrecht, E. Fischer, J.C. Fyfe, C. Jones, A. Maycock, J. Mutemi, O. Ndiaye, S. Panickal, and T. Zhou, 2021: Future Global Climate: Scenario-Based Projections and Near-Term Information. 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. 553–672, doi:10.1017/9781009157896.006.
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Figure subpanels
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The figure has seven panels, with data provided for the first four panels in separate NetCDF files.
a) Multi-model mean change in annual mean temperature at 1.5°C global warming relative to 1850-1900
b) Multi-model mean change in annual mean temperature at 2°C global warming relative to 1850-1900
c) Multi-model mean change in annual mean temperature at 3°C global warming relative to 1850-1900
d) Multi-model mean change in annual mean temperature at 4°C global warming relative to 1850-1900
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List of data provided
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Multi-model mean change in annual mean temperature at 1.5, 2, 3, and 4°C global warming relative to 1850-1900.
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Data provided in relation to figure
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Four data files are given for the four panels a-d
Data_shown_in_figure_panel_a.nc includes the variables tas representing the temperature change shown in panel a
Data_shown_in_figure_panel_b.nc includes the variables tas representing the temperature change shown in panel b
Data_shown_in_figure_panel_c.nc includes the variables tas representing the temperature change shown in panel c
Data_shown_in_figure_panel_d.nc includes the variables tas representing the temperature change shown in panel d
The information of panels e-g can be calculated from the difference of the respective data files a-d
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Notes on reproducing the figure from the provided data
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Time range: This is for the 20-yr time period in which any given model reaches a given warming level.
The respective time periods are documented here: https://github.com/mathause/cmip_warming_levels
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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 figure
- Link to the report component containing the figure (Chapter 4)
- Link to the Supplementary Material for Chapter 4, which contains details on the input data used in Table 4.SM.1
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 netCDF formatted
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Related Documents
Process overview
| Title | Caption for Figure 4.31 from Chapter 4 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6) |
| Abstract | Projected spatial patterns of change in annual average near-surface temperature (°C) at different levels of global warming. Displayed are (a–d) spatial patterns of change in annual average near-surface temperature at 1.5°C, 2°C, 3°C, and 4°C of global warming relative to the period 1850–1900 and (e–g) spatial patterns of differences in temperature change at 2°C, 3°C, and 4°C of global warming compared to 1.5°C of global warming. The number of models used is indicated in the top right of the maps. No overlay indicates regions where the change is robust and likely emerges from internal variability. That is, where at least 66% of the models show a change greater than the internal-variability threshold (Section 4.2.6) and at least 80% of the models agree on the sign of change. Diagonal lines indicate regions with no change or no robust significant change, where fewer than 66% of the models show change greater than the internal-variability threshold. Crossed lines indicate areas of conflicting signals where at least 66% of the models show change greater than the internal-variability threshold but fewer than 80% of all models agree on the sign of change. Values were assessed from a 20-year period at a given warming level, based on model simulations under the Tier-1 SSPs of CMIP6. Further details on data sources and processing are available in the chapter data table (Table 4.SM.1). |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- var_id: crosshatch
- var_id: hatch
- var_id: model_nr
- var_id: panel
- units: %
- var_id: tas
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: lat
- units: degrees_east
- standard_name: longitude
- var_id: lon
Temporal Range
1850-01-01T00:00:00
2100-01-01T23:59:59
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
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-90.0000° |