Data for Figure 9.32 from Chapter 9 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).

Figure 9.32 shows projected median frequency amplification factors for the 1% average annual probability extreme still water level in 2050 and 2100.

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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 panels a-f.

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List of data provided
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This dataset contains:

- Projected median frequency amplification factors for 1% average annual probability extreme still water level in 2050 (a, c, e) and 2100 (b, d, f).
- Regional projections for these under:
(a, b) SSP5-85.
(c, d) SSP2-45.
(e, f) SSP1-26.

1% average annual probability extreme still water level is defined as the 99th percentile of daily observed water levels over 1995–2014. Based on a peak-over-threshold (99.7%) method applied to the historical extreme still water levels of Global Extreme Sea Level Analysis version 2 (GESLA2) following Special Report on Ocean and Cryosphere in a Changing Climate (SROCC) and additionally fitting a Gumbel distribution between Mean Higher High Water (MHHW) and the threshold following Buchanan et al. (2016), using the regional sea level projections of Section 9.6.3.3 for (a-f).

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 9.32

- Data file: Fig9-32a_facts_esl_af_allow_ssp585_2050.nc
- Data file: Fig9-32b_facts_esl_af_allow_ssp585_2100.nc
- Data file: Fig9-32c_facts_esl_af_allow_ssp245_2050.nc
- Data file: Fig9-32d_facts_esl_af_allow_ssp245_2100.nc
- Data file: Fig9-32e_facts_esl_af_allow_ssp126_2050.nc
- Data file: Fig9-32f_facts_esl_af_allow_ssp126_2100.nc

Python file 'facts_esl_output_to_NetCDF.py' included in the 'Plotted Data' folder of the dedicated GitHub repository is not archived here but on Zenodo at the link provided in the Related Documents section of this catalogue record. This is a script converting ESL results in CSV format to NetCDF.

SSP stands for Shared Socioeconomic Pathway.
SSP585 is the Shared Socioeconomic Pathway which represents the upper boundary of radiative forcing and development scenarios, consistent with RCP8.5.
SSP245 is the Shared Socioeconomic Pathway which represents the median of radiative forcing and development scenarios, consistent with RCP4.5.
SSP126 is the Shared Socioeconomic Pathway which represents the lower boundary of radiative forcing and development scenarios, consistent with RCP2.6.
GESLA2 is the Global Extreme Sea Level Analysis version 2.
SROCC stands for Ocean and Cryosphere in a Changing Climate.
MHHW stands for Mean Higher High Water.

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Notes on reproducing the figure from the provided data
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Map and figure plots 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 code and output data for this figure, contained in a dedicated GitHub repository.