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Dataset

 

Chapter 9 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 9.11 (v20220712)

Latest Data Update: 2022-08-25
Status: Ongoing
Online Status: ONLINE
Publication State: Citable
Publication Date: 2023-02-02
DOI Publication Date: 2023-05-16
Download Stats: last 12 months
Dataset Size: 6 Files | 3MB

Abstract

Data for Figure 9.11 from Chapter 9 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).

Figure 9.11 shows simulated barotropic streamfunction, surface speed and major current transport in CMIP5 and CMIP6.

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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:
Fox-Kemper, B., H.T. Hewitt, C. Xiao, G. Aðalgeirsdóttir, S.S. Drijfhout, T.L. Edwards, N.R. Golledge, M. Hemer, R.E. Kopp, G. Krinner, A. Mix, D. Notz, S. Nowicki, I.S. Nurhati, L. Ruiz, J.-B. Sallée, A.B.A. Slangen, and Y. Yu, 2021: Ocean, Cryosphere and Sea Level Change. 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. 1211–1362, doi:10.1017/9781009157896.011.

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Figure subpanels
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The figure has 6 subpanels, with data provided for all panels in one central directory in the GitHub repository linked in the documentation.

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List of data provided
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This dataset contains:

- (a) Mean barotropic streamfunction (unit: 109 kgs–1; 1995–2014)
- (b) Projected barotropic streamfunction change (109 kgs–1; 2018–2100 vs 1995–2014) under SSP5-8.5.
- (d) Mean surface (0–100 m) speed (m s–1)
- (e) Projected surface speed change (m s–1, 2081–2100) versus 1995–2014 under SSP5-8.5.
- (c, f) Median and likely range of 1995–2014 and 2081–2100 transport of three currents with the largest transport change and four with the largest fractional change (Sen Gupta et al., 2016). (c) Deep currents: Agulhas Extension (ACx), Gulf Stream (GS), Gulf Stream Extension (GSx), Tasman Leakage (TASL), East Australia Current Extension (EACx), Indonesian Throughflow (ITF), and Brazil Current (BC). (f) Shallow currents: as for deep but with New Guinea Current (NGC), and without ACx.

No overlay indicates regions with high model agreement, where ≥80% of models agree on the sign of change. Diagonal lines indicate regions with low model agreement, where <80% of models agree on the sign of change (see Cross-Chapter Box Atlas.1 for more information). Further details on data sources and processing are available in the chapter data table (Table 9.SM.9).

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Data provided in relation to figure
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Data provided in relation to Figure 9.11

- Data file: Fig9-11a_data.nc:
- Data file: Fig9-11b_data.nc:
- Data file: Fig9-11d_data.nc:
- Data file: Fig9-11e_data.nc:

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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Speed maps, stream function maps and transport panels were plotted using standard matplotlib software - code is available via the link in the documentation.

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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 9)
- Link to the Supplementary Material for Chapter 9, which contains details on the input data used in Table 9.SM.9
- Link to the data and code used to produce this figure and others in Chapter 9, archived on Zenodo.
- Link to the output data for this figure, contained in a dedicated GitHub repository.

Citable as:  Yu, Y.; Hua, L.; Pearson, B. (2023): Chapter 9 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 9.11 (v20220712). NERC EDS Centre for Environmental Data Analysis, 16 May 2023. doi:10.5285/88dc6a422faa4d0486d35088e3d1d78f. https://dx.doi.org/10.5285/88dc6a422faa4d0486d35088e3d1d78f
Abbreviation: Not defined
Keywords: IPCC-DDC, IPCC, AR6, WG1, WGI, Sixth Assessment Report, Working Group 1, Physical Science Basis, streamfunction, surface speed, surface currents, transport, ocean transport

Details

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: 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 curated on behalf of the IPCC Data Distribution Centre (IPCC-DDC).

Data Quality:
Data as provided by the IPCC
File Format:
NetCDF, txt

Process overview

This dataset was generated by the computation detailed below.
Title

Caption for Figure 9.11 from Chapter 9 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6)

Abstract

Simulated barotropic streamfunction, surface speed and major current transport in Coupled Model Intercomparison Project Phase 5 and 6 (CMIP5 and CMIP6). (a) Mean barotropic streamfunction (unit: 109kgs–1; 1995–2014) and projected barotropic streamfunction change (109kgs–1; 2018–2100 vs 1995–2014) under (b) SSP5-8.5. (d) Mean surface (0–100 m) speed (m s–1) and projected surface speed change (m s–1, 2081–2100) versus 1995–2014 under (e) SSP5-8.5. (c, f) Median and likely range of 1995–2014 and 2081–2100 transport of three currents with the largest transport change and four with the largest fractional change (Sen Gupta et al., 2016). (c) Deep currents: Agulhas Extension (ACx), Gulf Stream (GS), Gulf Stream Extension (GSx), Tasman Leakage (TASL), East Australia Current Extension (EACx), Indonesian Throughflow (ITF), and Brazil Current (BC). (f) Shallow currents: as for deep but with New Guinea Current (NGC), and without ACx. No overlay indicates regions with high model agreement, where ≥80% of models agree on the sign of change. Diagonal lines indicate regions with low model agreement, where <80% of models agree on the sign of change (see Cross-Chapter Box Atlas.1 for more information). Further details on data sources and processing are available in the chapter data table (Table 9.SM.9).

Input Description

None

Output Description

None

Software Reference

None

  • var_id: Latitude
  • var_id: Longitude
  • var_id: Mask
  • var_id: msftbarot
  • var_id: msftbarot_change
  • var_id: surface_speed
  • var_id: surface_speed_change

Co-ordinate Variables

Coverage
Temporal Range
Start time:
1995-01-01T00:00:00
End time:
2100-12-31T23:59:59
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°