Dataset
Chapter 10 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 10.11 (v20220622)
Abstract
Data for Figure 10.11 from Chapter 10 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).
Figure. 10.11 shows attribution of historic precipitation change in the Sahelian West African monsoon during June to September.
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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:
Doblas-Reyes, F.J., A.A. Sörensson, M. Almazroui, A. Dosio, W.J. Gutowski, R. Haarsma, R. Hamdi, B. Hewitson, W.-T. Kwon, B.L. Lamptey, D. Maraun, T.S. Stephenson, I. Takayabu, L. Terray, A. Turner, and Z. Zuo, 2021: Linking Global to Regional Climate 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. 1363–1512, doi:10.1017/9781009157896.012.
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Figure subpanels
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The figure has 5 subpanels. Data for all subpanels is provided.
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List of data provided
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The data is annual June-September (JJAS) precipitation means for:
- Observed anomalies over 1920-2018 respect to 1955-1984 average over the Sahel (lon: 20°W-30°E, lat: 10°N-20°N)
- Model anomalies over 1920-2018 respect to 1955-1984 average over the Sahel (lon: 20°W-30°E, lat: 10°N-20°N)
- Observed precipitation difference 1980-1990 mean - 1950-1960 mean
- Model differences between 1.5x and 0.2x aerosol scalings over 1955-1984
- Trends in relative precipitation anomalies (baseline 1955-1984) over decline (1955-1984) and recovery (1985-2014) period over the Sahel (lon: 20°W-30°E, lat: 10°N-20°N)
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Data provided in relation to figure
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Panel (a):
Observed (CRU TS) timeseries anomalies over 1920-2018 in respect to 1955-1984 average over the Sahel (lon: 20°W-30°E, lat: 10°N-20°N):
- Data file:
Fig_10_11_panel-a_timeseries_obs.csv
Panel (b):
Observed (CRU TS) precipitation difference 1980-1990 mean - 1950-1960 mean:
- Data file:
Fig_10_11_panel-b_mapplot_pr_change_CRU_single_mean.nc
Panel (c):
Model differences between 1.5x and 0.2x aerosol scalings over 1955-1984:
- Data file:
Fig_10_11_panel-c_mapplot_pr_diff_SMURPHS_single_mean.nc
Panel (d):
Model timeseries anomalies over 1920-2018 respect to 1955-1984 average over the Sahel (lon: 20°W-30°E, lat: 10°N-20°N) for CMIP6 hist all-forcings (red), CMIP6 hist all-forcings sample corresponding to DAMIP experiments (pink), CMIP6 hist-aer (grey) and CMIP6 hist-GHG (pale blue):
- Data file:
Fig_10_11_panel-d_timeseries_cmip6.csv
Panel (e):
Observed and modelled OLS linear trends in relative precipitation anomalies (baseline 1955-1984) over decline (1955-1984) and recovery (1985-2014) period over the Sahel (lon: 20°W-30°E, lat: 10°N-20°N): observed data (GPCC, CRU TS: black crosses), 34 CMIP5 models (dark blue circles), individual members of CMIP6 hist all-forcings (red circles), CMIP6 hist all-forcings sample corresponding to DAMIP experiments (pink circles), CMIP6 hist-GHG (blue triangles), CMIP6 hist-aer (grey triangles), and box-and-whisker plots for the SMILEs: MIROC6, CSIRO-Mk3-6-0, MPI-ESM, d4PDF (grey shading):
- Data file:
Fig_10_11_panel-e_trends.csv;
Acronyms:
CMIP - Coupled Model Intercomparison Project,
CRU TS- Climatic Research Unit Time Series,
SMURPHS - Securing Multidisciplinary UndeRstanding and Prediction of Hiatus and Surge events,
DAMIP - Detection and Attribution Model Intercomparison Project,
GHG - Greenhouse Gases,
GPCC - GLOBAL PRECIPITATION CLIMATOLOGY CENTRE,
SMILEs -single model initial-condition large ensembles,
CSIRO - Commonwealth Scientific and Industrial Research Organisation,
MIROC - Model for Interdisciplinary Research on Climate,
MPI - Max-Planck-Institut für Meteorologie,
d4PDF - Database for Policy Decision-Making for Future Climate Change,
OLS - ordinary least squares regression.
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Notes on reproducing the figure from the provided data
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The code for ESMValTool is provided.
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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 10)
- Link to the Supplementary Material for Chapter 10, which contains details on the input data used in Table 10.SM.11
- 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: |
txt, netCDF, csv
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Related Documents
Process overview
| Title | Caption for Figure 10.11 from Chapter 10 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6) |
| Abstract | Attribution of historic precipitation change in the Sahelian West African monsoon during June to September. (a) Time series of CRU TS precipitation anomalies (mm day–1, baseline 1955–1984) in the Sahel box (10°N–20°N, 20°W–30°E) indicated in panel (b) applying the same low-pass filter as that used in Figure 10.10. The two periods used for difference diagnostics are shown in grey columns. (b) Precipitation change (mm day–1) in CRU TS data for 1980–1990 minus 1950–1960 periods. (c) Precipitation difference (mm day–1) between 1.5× and 0.2× historical aerosol emissions scaling factors averaged over 1955–1984 and five ensemble members of HadGEM3 experiments after Shonk et al. (2020). (d) Sahel precipitation anomaly time series (mm day–1, baseline 1955–1984) in Coupled Model Intercomparison Project Phase 6 (CMIP6) for 49 historical simulations with all forcings (red), and thirteen for each of greenhouse gas-only forcing (light blue) and aerosol-only forcing (grey), with a thirteen-point weighted running mean applied (a variant on the binomial filter with weights [1-6-19-42-71-96-106-96-71-42-19-6-1]). The CMIP6 subsample of all forcings matching the individual forcing simulations is also shown (pink). (e) Precipitation linear trend (% per decade) for (left) decline (1955–1984) and (right) recovery periods (1985–2014) for ensemble means and individual CMIP6 historical experiments (including single-forcing) as in panel (d) plus 34 CMIP5 models (dark blue). Box-and-whisker plots show the trend distribution of the three coupled and the d4PDF atmosphere-only single-model initial-condition large ensembles (SMILEs) used throughout Chapter 10 and follow the methodology used in Figure 10.6. The two black crosses represent observational estimates from GPCC and CRU TS. Trends are estimated using ordinary least-squares regression. Further details on data sources and processing are available in the chapter data table (Table 10.SM.11). |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- var_id: pr
- standard_name: precipitation_flux
- long_name: Precipitation
- units: kg m-2 day-1
- long_name: clim_season
- var_id: clim_season
- var_id: lat_bnds
- var_id: latitude_longitude
- var_id: lon_bnds
- var_id: pr
- standard_name: precipitation_flux
- units: kg m-2 day-1
- units: 1
- long_name: season_year
- var_id: season_year
- var_id: season_year_bnds
- var_id: time_bnds
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- long_name: latitude
- var_id: lat
- units: degrees_north
- standard_name: latitude
- var_id: lat
- long_name: latitude coordinate
- units: degrees_east
- standard_name: longitude
- long_name: longitude
- var_id: lon
- units: degrees_east
- standard_name: longitude
- var_id: lon
- long_name: longitude coordinate
- long_name: time
- standard_name: time
- var_id: time
- units: days
Temporal Range
1920-01-01T12:00:00
2018-12-31T12:00:00
Geographic Extent
40.0000° |
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-30.0000° |
60.0000° |
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-10.0000° |