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Chapter 3 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 3.10 (v20211001)

Update Frequency: Not Planned
Latest Data Update: 2021-10-15
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2021-10-29
DOI Publication Date: 2023-02-08
Download Stats: last 12 months
Dataset Size: 5 Files | 16KB


Data for Figure 3.10 from Chapter 3 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).

Figure 3.10 shows observed and simulated tropical mean temperature trends through the atmosphere.

How to cite this dataset
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.

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

List of data provided
Temperature trend from radiosonde, reanalysis and CMIP6 data, including their uncertainty where available.

CMIP6 is the sixth phase of the Coupled Model Intercomparison Project.
Data provided in relation to figure
- panel_a/ipcc_ar6_chap3_fig_3_10_panel_a_with_metadata.csv
- panel_b/ipcc_ar6_chap3_fig_3_10_panel_b_with_metadata.csv
- panel_c/ipcc_ar6_chap3_fig_3_10_panel_c_with_metadata.csv

Details of data provided in relation to each figure panel and its elements are described in the metadata associated with each file.

Sources of additional information
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.

Citable as:  Lo, E. (2023): Chapter 3 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 3.10 (v20211001). NERC EDS Centre for Environmental Data Analysis, 08 February 2023. doi:10.5285/cf006675070548359e22e36d354d0f92.
Abbreviation: Not defined
Keywords: IPCC-DDC, IPCC, AR6, WG1, WGI, Sixth Assessment Report, Working Group I, Physical Science Basis, Chapter 3, Human influence, large-scale indicators, Natural variability, anthropogenically-forced change, observed changes, Figure 3.10, temperature trends


Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
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: 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 curated on behalf of the IPCC Data Distribution Centre (IPCC-DDC).

Data Quality:
Data as provided by the IPCC
File Format:
Data are BADC-CSV formatted.

Process overview

This dataset was generated by the computation detailed below.

Caption for Figure 3.10 from Chapter 3 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6)


Observed and simulated tropical mean temperature trends through the atmosphere. Vertical profiles of temperature trends in the tropics (20°S–20°N) for three periods: (a) 1979–2014, (b) 1979–1997 (ozone depletion era) and (c) 1998–2014 (ozone stabilisation era). The black lines show trends in the RICH 1.7 (long dashed) and Radiosonde Observation Correction using Reanalysis (RAOBCORE) 1.7 (dashed) radiosonde datasets (Haimberger et al., 2012), and in the ERA5/5.1 reanalysis (solid). Grey envelopes are centred on the RICH 1.7 trends, but show the uncertainty based on 32 RICH-obs members of version 1.5.1 of the dataset, which used version 1.7.3 of the RICH software but with the parameters of version 1.5.1. ERA5 was used as reference for calculating the adjustments between 2010 and 2019, and ERA-Interim was used for the years before that. Red lines show trends in CMIP6 historical simulations from one realization of 60 models. Blue lines show trends in 46 CMIP6 models that used prescribed, rather than simulated, sea surface temperatures (SSTs). Figure is adapted from Mitchell et al. (2020), their Figure 1. Further details on data sources and processing are available in the chapter data table (Table 3.SM.1).

Input Description


Output Description


Software Reference


  • long_name: cmip6_amip_lower_trends
  • names: cmip6_amip_lower_trends
  • long_name: cmip6_amip_trends
  • names: cmip6_amip_trends
  • long_name: cmip6_amip_upper_trends
  • names: cmip6_amip_upper_trends
  • long_name: cmip6_coupled_lower_trends
  • names: cmip6_coupled_lower_trends
  • long_name: cmip6_coupled_trends
  • names: cmip6_coupled_trends
  • long_name: cmip6_coupled_upper_trends
  • names: cmip6_coupled_upper_trends
  • long_name: era5_trends
  • names: era5_trends
  • long_name: pressure_level
  • names: pressure_level
  • long_name: raobcore_v17_trends
  • names: raobcore_v17_trends
  • long_name: rich_lower_end_trends
  • names: rich_lower_end_trends
  • long_name: rich_upper_end_trends
  • names: rich_upper_end_trends
  • long_name: rich_v17_trends
  • names: rich_v17_trends

Co-ordinate Variables

Temporal Range
Start time:
End time:
Geographic Extent

Related parties
Authors (1)