Version: 0.0.1 | Published: 1 Nov 2021 | Updated: 1279 days ago
Data for Figure SPM.6 (v20210809) - Summary for Policymakers of the Working Group I Contribution to the IPCC Sixth Assessment Report
Dataset
Summary
Citation:
Li, C.; Hauser, M., 2021, Data for Figure SPM.6 (v20210809) - Summary for
Policymakers of the Working Group I Contribution to the IPCC Sixth Assessment
Report, NERC EDS Centre for Environmental Data
Analysis, http://dx.doi.org/10.5285/93d1b84fbb144901809eaf67b35eb5c4
Documentation
Associated Media:
Description:
Data for Figure SPM.6 from the Summary for Policymakers (SPM) of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).
Figure SPM.6 shows projected changes in the intensity and frequency of extreme temperature, extreme precipitation and droughts.
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Figure Caption
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Projected changes in the intensity and frequency of hot temperature extremes over land, extreme precipitation over land, and agricultural and ecological droughts in drying regions. Projected changes are shown at global warming levels of 1°C, 1.5°C, 2°C, and 4°C and are relative to 1850-1900 {Footnote } representing a climate without human influence. The figure depicts frequencies and increases in intensity of 10- or 50-year extreme events from the base period (1850-1900) under different global warming levels. Hot temperature extremes are defined as the daily maximum temperatures over land that were exceeded on average once in a decade (10-year event) or once in 50 years (50-year event) during the 1850–1900 reference period. Extreme precipitation events are defined as the daily precipitation amount over land that was exceeded on average once in a decade during the 1850–1900 reference period. Agricultural and ecological drought events are defined as the annual average of total column soil moisture below the 10th percentile of the 1850–1900 base period. These extremes are defined on model grid box scale. For hot temperature extremes and extreme precipitation, results are shown for the global land. For agricultural and ecological drought, results are shown for drying regions only, which correspond to the AR6 regions in which there is at least medium confidence in a projected increase in agricultural/ecological drought at the 2°C warming level compared to the 1850–1900 base period in CMIP6. These regions include W. North-America, C. North-America, N. Central-America, S. Central-America, Caribbean, N. South-America, N.E. South-America, South-American-Monsoon, S.W. South-America, S. South-America, West & Central-Europe, Mediterranean, W. Southern-Africa, E. Southern-Africa, Madagascar, E. Australia, S. Australia (Caribbean is not included in the calculation of the figure because of the too small number of full land grid cells). The non-drying regions do not show an overall increase or decrease in drought severity. Projections of changes in agricultural and ecological droughts in the CMIP5 multi-model ensemble differ from those in CMIP6 in some regions, including in part of Africa and Asia. Assessments on projected changes in meteorological and hydrological droughts are provided in Chapter 11. {11.6, 11.9} In the ‘frequency’ section, each year is represented by a dot. The dark dots indicate years in which the extreme threshold is exceeded, while light dots are years when the threshold is not exceeded. Values correspond to the medians (in bold) and their respective 5%-95% range based on the multi-model ensemble from simulations of CMIP6 under different SSP scenarios. For consistency, the number of dark dots is based on the rounded-up median. In the ‘intensity’ section, medians and their 5%-95% range, also based on the multi-model ensemble from simulations of CMIP6, are displayed as dark and light bars, respectively. Changes in the intensity of hot temperature extremes and extreme precipitations are expressed as degree celsius and percentage. As for agricultural and ecological drought, intensity changes are expressed as fractions of standard deviation of annual soil moisture. {11.1, 11.3, 11.4, 11.6, Figure 11.12, Figure 11.15, Figure 11.6, Figure 11.7, Figure 11.18} Footnote: The period 1850–1900 represents the earliest period of sufficiently globally complete observations to estimate global surface temperature and, consistent with AR5 and SR1.5, is used as an approximation for pre-industrial conditions.
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Figure subpanels
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The figure has four panels, with data provided for all panels in subdirectories named panel_a, panel_b, panel_c and panel_d.
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List of data provided
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This dataset contains:
- Changes in annual maximum temperature (TXx) extremes for intensity (°C) and frequency (-) for 1 in 10 year and 1 in 50 year events (relative to 1850-1900)
- Changes in annual maximum 1-day precipitation (Rx1day) extremes for intensity (%) and frequency (-) for 1 in 10 year events (relative to 1850-1900)
- Changes in soil moisture-based drought events for intensity (standard deviation) and frequency (-) for 1 in 10 year events (relative to 1850-1900)
Is Part Of:
Summary for Policymakers of the Working Group I Contribution to the IPCC AR6
Coverage
Spatial Aggregation:
Region
Spatial Coverage:
Global
Spatial Resolution:
Grid-box
Start Date:
01 January 1850
Temporal Resolution:
OTHER
Geographic Bounding Box
Lower Left Latitude:
-90.0000
Lower Left Longitude:
-180.0000
Upper Right Latitude:
90.0000
Upper Right Longitude:
180.0000
Provenance
Purpose:
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).
Accessibility
Access
Access Service:
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 Data Catalogue record. 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: IPCC, 2021: Summary for Policymakers. 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. In Press. Citable as: Li, C.; Hauser, M. (2021): Summary for
Policymakers of the Working Group I Contribution to the IPCC Sixth Assessment
Report - data for Figure SPM.6 (v20210809). NERC EDS Centre for Environmental
Data Analysis, 09 August 2021. doi:10.5285/93d1b84fbb144901809eaf67b35eb5c4.
http://dx.doi.org/10.5285/93d1b84fbb144901809eaf67b35eb5c4
Format:
csv
Language:
en
Usage
Is Referenced By:
Resource Creator:
- Li, C.
- Hauser, M.
Origin
Name:
IPCC Data Catalogue