Dataset
Chapter 3 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 3.24 (v20220614)
Abstract
Data for Figure 3.24 from Chapter 3 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).
Figure 3.24 shows biases in zonal mean and equatorial sea surface temperature (SST) in CMIP5 and CMIP6 models.
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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 panels (a), (b), (c), with data provided for all panels in subdirectories named panel_a, panel_b and panel_c.
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List of data provided
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The dataset contains sea surface temperature (SST) data (1979-1999):
- Modelled zonal mean SST biases from CMIP5
- Modelled zonal mean SST biases from CMIP6
- Modelled zonal mean SST biases from HighResMIP
- Modelled equatorial SST biases from CMIP5
- Modelled equatorial SST biases from CMIP6
- Modelled equatorial SST biases from HighResMIP
- Modelled mean equatorial SST from CMIP5
- Modelled mean equatorial SST from CMIP6
- Modelled mean equatorial SST from HighResMIP
- Observed mean equatorial SST from HadISST v1
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Data provided in relation to figure
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- panel_a/zonal_sst_bias.csv has zonal mean sea surface temperature bias over the period 1979-1999, there are data for blue (CMIP5), red (CMIP6) and green (HighResMIP) shadings representing 5th and 95th percentile over ensemble
- panel_b/equatorial_sst_bias.csv has equatorial mean sea surface temperature bias over the period 1979-1999, there are data for blue (CMIP5), red (CMIP6) and green (HighResMIP) shadings representing 5th and 95th percentile over ensemble
- panel_c/equatorial_sst_means.csv has equatorial mean sea surface temperature over the period 1979-1999, there are data for black (HadISSTv1), blue (CMIP5), red (CMIP6) and green (HighResMIP) shadings representing 5th and 95th percentile over ensemble
Details about the data provided in relation to the figure in the header of every file.
CMIP5 is the fifth phase of the Coupled Model Intercomparison Project.
CMIP6 is the sixth phase of the Coupled Model Intercomparison Project.
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Notes on reproducing the figure from the provided data
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For equatorial SSTs and equatorial SST biases, the data has longitude coordinate which goes 20 to 380 degrees. It was done with python package iris not to break the lines through Atlantic.
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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 code for the figure, archived on Zenodo.
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 3.24 from Chapter 3 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6) |
| Abstract | Biases in zonal mean and equatorial sea surface temperature (SST) in CMIP5 and CMIP6 models. CMIP6 (red), CMIP5 (blue) and HighResMIP (green) multi-model mean (a) zonally averaged SST bias; (b) equatorial SST bias; and (c) equatorial SST compared to observed mean SST (black line) for 1979–1999. The inter-model 5th and 95th percentiles are depicted by the respective shaded range. Model climatologies are derived from the 1979–1999 mean of the historical simulations, using one simulation per model. The Hadley Centre Sea Ice and Sea Surface Temperature version 1 (HadISST) (Rayner et al., 2003) observational climatology for 1979–1999 is used as the reference for the error calculation in (a) and (b); and for observations in (c). 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 |
- long_name: Latitude
- units: Degrees
- var_id: 1
- long_name: Longitude
- units: Degrees
- var_id: 1
- units: Degrees C
- var_id: 2
- long_name: sst_bias_blue_line_cmip5_mean
- units: Degrees C
- var_id: 3
- long_name: sst_bias_blue_shading_bottom_cmip5_5_perc
- units: Degrees C
- var_id: 4
- long_name: sst_bias_blue_shading_top_cmip5_95_perc
- units: Degrees C
- var_id: 8
- long_name: sst_bias_green_line_highresmip_mean
- units: Degrees C
- var_id: 9
- long_name: sst_bias_green_shading_bottom_highresmip_5_perc
- units: Degrees C
- var_id: 10
- long_name: sst_bias_green_shading_top_highresmip_95_perc
- units: Degrees C
- var_id: 5
- long_name: sst_bias_red_line_cmip6_mean
- units: Degrees C
- var_id: 6
- long_name: sst_bias_red_shading_bottom_cmip6_5_perc
- units: Degrees C
- var_id: 7
- long_name: sst_bias_red_shading_top_cmip6_95_perc
- units: Degrees C
- var_id: 11
- long_name: sst_black_line_obs_hadisst
- units: Degrees C
- var_id: 2
- long_name: sst_blue_line_cmip5_mean
- units: Degrees C
- var_id: 3
- long_name: sst_blue_shading_bottom_cmip5_5_perc
- units: Degrees C
- var_id: 4
- long_name: sst_blue_shading_top_cmip5_95_perc
- units: Degrees C
- var_id: 8
- long_name: sst_green_line_highresmip_mean
- units: Degrees C
- var_id: 9
- long_name: sst_green_shading_bottom_highresmip_5_perc
- units: Degrees C
- var_id: 10
- long_name: sst_green_shading_top_highresmip_95_perc
- units: Degrees C
- var_id: 5
- long_name: sst_red_line_cmip6_mean
- units: Degrees C
- var_id: 6
- long_name: sst_red_shading_bottom_cmip6_5_perc
- units: Degrees C
- var_id: 7
- long_name: sst_red_shading_top_cmip6_95_perc
Co-ordinate Variables
Temporal Range
1979-01-01T12:00:00
1999-12-31T12:00:00
Geographic Extent
90.0000° |
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-180.0000° |
180.0000° |
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-90.0000° |