Chapter 3 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 3.40 (v20220614)

Data for Figure 3.40 from Chapter 3 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).

Figure 3.40 shows the observed and simulated Atlantic Multidecadal Variability (AMV).

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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 six panels. Files are not separated according to the panels.

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List of data provided

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amv.obs.nc contains

- Observed SST anomalies associated with the AMV pattern

- Observed AMV index time series (unfiltered)

- Observed AMV index time series (low-pass filtered)

- Taylor statistics of the observed AMV patterns

amv.hist.cmip6.nc contains

- Statistical significance of the observed SST anomalies associated with the AMV pattern

- Simulated SST anomalies associated with the AMV pattern

- Simulated AMV index time series (unfiltered)

- Simulated AMV index time series (low-pass filtered)

- Taylor statistics of the simulated AMV patterns

based on CMIP6 historical simulations.

amv.hist.cmip5.nc contains

- Simulated SST anomalies associated with the AMV pattern

- Simulated AMV index time series (unfiltered)

- Simulated AMV index time series (low-pass filtered)

- Taylor statistics of the simulated AMV patterns

based on CMIP5 historical simulations.

amv.piControl.cmip6.nc contains

- Simulated SST anomalies associated with the AMV pattern

- Simulated AMV index time series (unfiltered)

- Simulated AMV index time series (low-pass filtered)

- Taylor statistics of the simulated AMV patterns

based on CMIP6 piControl simulations.

amv.piControl.cmip5.nc contains

- Simulated SST anomalies associated with the AMV pattern

- Simulated AMV index time series (unfiltered)

- Simulated AMV index time series (low-pass filtered)

- Taylor statistics of the simulated AMV patterns

based on CMIP5 piControl simulations.

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Data provided in relation to figure

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Panel a:

- amv_pattern_obs_ref in amv.obs.nc: shading

- amv_pattern_obs_signif (dataset = 1) in amv.obs.nc: cross markers

Panel b:

- Multimodel ensemble mean of amv_pattern in amv.hist.cmip6.nc: shading, with their sign agreement for hatching

Panel c:

- tay_stats (stat = 0, 1) in amv.obs.nc: black dots

- tay_stats (stat = 0, 1) in amv.hist.cmip6.nc: red crosses, and their multimodel ensemble mean for the red dot

- tay_stats (stat = 0, 1) in amv.hist.cmip5.nc: blue crosses, and their multimodel ensemble mean for the blue dot

Panel d:

- Lag-1 autocorrelation of amv_timeseries_raw in amv.obs.nc: black horizontal lines in left

. ERSSTv5: dataset = 1

. HadISST: dataset = 2

. COBE-SST2: dataset = 3

- Multimodel ensemble mean and percentiles of lag-1 autocorrelation of amv_timeseries_raw in amv.piControl.cmip5.nc: blue open box-whisker in the left

- Multimodel ensemble mean and percentiles of lag-1 autocorrelation of amv_timeseries_raw in amv.piControl.cmip6.nc: red open box-whisker in the left

- Multimodel ensemble mean and percentiles of lag-1 autocorrelation of amv_timeseries_raw in amv.hist.cmip5.nc: blue filled box-whisker in the left

- Multimodel ensemble mean and percentiles of lag-1 autocorrelation of amv_timeseries_raw in amv.hist.cmip6.nc: red filled box-whisker in the left

- Lag-10 autocorrelation of amv_timeseries in amv.obs.nc: black horizontal lines in right

. ERSSTv5: dataset = 1

. HadISST: dataset = 2

. COBE-SST2: dataset = 3

- Multimodel ensemble mean and percentiles of lag-10 autocorrelation of amv_timeseries in amv.piControl.cmip5.nc: blue open box-whisker in the right

- Multimodel ensemble mean and percentiles of lag-10 autocorrelation of amv_timeseries in amv.piControl.cmip6.nc: red open box-whisker in the right

- Multimodel ensemble mean and percentiles of lag-10 autocorrelation of amv_timeseries in amv.hist.cmip5.nc: blue filled box-whisker in the right

- Multimodel ensemble mean and percentiles of lag-10 autocorrelation of amv_timeseries in amv.hist.cmip6.nc: red filled box-whisker in the right

Panel e:

- Standard deviation of amv_timeseries_raw in amv.obs.nc: black horizontal lines in left

. ERSSTv5: dataset = 1

. HadISST: dataset = 2

. COBE-SST2: dataset = 3

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries_raw in amv.piControl.cmip5.nc: blue open box-whisker in the left

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries_raw in amv.piControl.cmip6.nc: red open box-whisker in the left

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries_raw in amv.hist.cmip5.nc: blue filled box-whisker in the left

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries_raw in amv.hist.cmip6.nc: red filled box-whisker in the left

- Standard deviation of amv_timeseries in amv.obs.nc: black horizontal lines in right

. ERSSTv5: dataset = 1

. HadISST: dataset = 2

. COBE-SST2: dataset = 3

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries in amv.piControl.cmip5.nc: blue open box-whisker in the right

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries in amv.piControl.cmip6.nc: red open box-whisker in the right

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries in amv.hist.cmip5.nc: blue filled box-whisker in the right

- Multimodel ensemble mean and percentiles of standard deviation of amv_timeseries in amv.hist.cmip6.nc: red filled box-whisker in the right

Panel f:

- amv_timeseries in amv.obs.nc: black curves

. ERSSTv5: dataset = 1

. HadISST: dataset = 2

. COBE-SST2: dataset = 3

- amv_timeseries in amv.hist.cmip6.nc: 5th-95th percentiles in red shading, multimodel ensemble mean and its 5-95% confidence interval for red curves

- amv_timeseries in amv.hist.cmip5.nc: 5th-95th percentiles in blue shading, multimodel ensemble mean for blue curve

CMIP5 is the fifth phase of the Coupled Model Intercomparison Project.

CMIP6 is the sixth phase of the Coupled Model Intercomparison Project.

SST stands for Sea Surface Temperature.

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Notes on reproducing the figure from the provided data

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Multimodel ensemble means and percentiles of historical simulations of CMIP5 and CMIP6 are calculated after weighting individual members with the inverse of the ensemble size of the same model. ensemble_assign in each file provides the model number to which each ensemble member belongs. This weighting does not apply to the sign agreement calculation.

piControl simulations from CMIP5 and CMIP6 consist of a single member from each model, so the weighting is not applied.

Multimodel ensemble means of the pattern correlation in Taylor statistics in (c) and the autocorrelation of the index in (d) are calculated via Fisher z-transformation and back transformation.

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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

Date (Publication): 2022-06-27T10:42:28

Date (Creation): 2022-06-27T10:42:28

Citation identifier: https://catalogue.ceda.ac.uk/uuid/12f0d7db5ed747d2940210e52211ed6a

Citation identifier: NERC EDS Centre for Environmental Data Analysis / 12f0d7db5ed747d2940210e52211ed6a

Citation identifier: doi / 10.5285/12f0d7db5ed747d2940210e52211ed6a

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Unavailable	Phillips, Adam	Unavailable	Author
Unavailable	Kosaka, Yu	Unavailable	Author
Unavailable	Cassou, Christophe	Unavailable	Author
Unavailable	Kazeroni, Rémi	Unavailable	Author
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Custodian
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Distributor
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	pointofContact
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Publisher

Maintenance and update frequency: Not planned

Update scope: Dataset

Keywords

IPCC-DDC
IPCC
AR6
WG1
WGI
Sixth Assessment Report
Working Group 1
Physical Science Basis
Atlantic Multidecadal Variability
modes of variability
CMIP5
CMIP6

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: Public data: access to these data is available to both registered and non-registered users.

Use constraints: Other restrictions

Other constraints: Under the following licence http://creativecommons.org/licenses/by/4.0/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Climatology, meteorology, atmosphere

Begin date: 1900-01-01T12:00:00

End date: 2014-12-31T12:00:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
Data are netCDF formatted

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/12f0d7db5ed747d2940210e52211ed6a	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/ar6_wg1/data/ch_03/ch3_fig40/v20220614	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Chapter03.pdf	ORIGIN OF FIGURE (IPCC REPORT CHAPTER): 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

OnLine resource

Protocol	Linkage	Name
	https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Chapter_03_Supplementary_Material.pdf	SUPPLEMENTARY MATERIAL FOR REPORT CHAPTER: 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 Supplementary Material. 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

OnLine resource

Protocol	Linkage	Name
	https://doi.org/10.5281/zenodo.6783260	CODE FOR FIGURE (archived at Zenodo)

OnLine resource

Protocol	Linkage	Name
	https://www.ipcc.ch/report/ar6/wg1/figures/chapter-3/figure-3-40	Link to the figure

OnLine resource

Protocol	Linkage	Name
	https://doi.org/10.5281/zenodo.14986397	Complex Citation Object: CMIP6 input data usage information for IPCC WGI AR6 figure 3.40, Zenodo. https://doi.org/10.5281/zenodo.14986397

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Statement: 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).

Metadata

File identifier: 12f0d7db5ed747d2940210e52211ed6a XML

Metadata language: English

Character set: UTF8

Parent identifier: IPCC Sixth Assessment Report (AR6) Chapter 3: Human influence on the climate system
932c79b1f7cd4f34b7c542f316f39c17

Hierarchy level: Dataset

Date stamp: 2026-03-11T03:26:51

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Point of contact

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