MDX Browser > Data for Figure SPM.4 - Summary for Policymakers of the Working Group III Contribution to the IPCC Sixth Assessment Report @ 3878

Version: 0.0.1 | Published: 4 Apr 2022 | Updated: 962 days ago

Data for Figure SPM.4 - Summary for Policymakers of the Working Group III Contribution to the IPCC Sixth Assessment Report

Dataset

Summary

Citation:

Kriegler, E.; Krey, V.; Byers, E., 2022, Data for Figure SPM.4 - Summary for Policymakers of the Working Group III Contribution to the IPCC Sixth Assessment Report, MetadataWorks, https://doi.org/10.48490/ys3e-mq98

DOI Name:

https://doi.org/10.48490/ys3e-mq98

Documentation

Description:

Panel a shows global GHG emissions over 2015-2050 for four types of assessed modelled global pathways: - Trend from implemented policies: Pathways with projected near-term GHG emissions in line with policies implemented until the end of 2020 and extended with comparable ambition levels beyond 2030 (29 scenarios across categories C5-C7, Table SPM.1) - Limit to 2°C (>67%) or return warming to 1.5°C (>50%) after a high overshoot, NDCs until 2030: Pathways with GHG emissions until 2030 associated with the implementation of NDCs announced prior to COP26, followed by accelerated emissions reductions likely to limit warming to 2°C (C3b, Table SPM.1) or to return warming to 1.5°C with a probability of 50% or greater after high overshoot (subset of 42 scenarios from C2, Table SPM.1). - Limit to 2°C (>67%) with immediate action: Pathways that limit warming to 2°C (>67%) with immediate action after 202027 (C3a, Table SPM.1). - Limit to 1.5°C (>50%) with no or limited overshoot: Pathways limiting warming to 1.5°C with no or limited overshoot (C1, Table SPM.1 C1). All these pathways assume immediate action after 2020. Past GHG emissions for 2010-2015 used to project global warming outcomes of the modelled pathways are shown by a black line [FOOTNOTE 33] and past global GHG emissions in 2015 and 2019 as assessed in Chapter 2 are shown by whiskers. FOOTNOTE 33: See the Box SPM.1 for a description of the approach to project global warming outcomes of modelled pathways and its consistency between the climate assessment in AR6 WG I. Panels b, c and d show snapshots of the GHG emission ranges of the modelled pathways in 2030, 2050, and 2100, respectively. Panel b also shows projected emissions outcomes from near-term policy assessments in 2030 from Chapter 4.2 (Tables 4.2 and 4.3; median and full range). GHG emissions are in CO2-equivalent using GWP100 from AR6 WG I. {3.5, 4.2, Tables 4.2 and 4.3, Cross-Chapter Box 4 in Chapter 4}

Is Part Of:

Summary for Policymakers of the Working Group III Contribution to the IPCC AR6

Coverage

Spatial Coverage:

Global

Start Date:

01 January 2010

End Date:

31 December 2050

Geographic Bounding Box

Lower Left Latitude:

-90.0000

Lower Left Longitude:

-180.0000

Upper Right Latitude:

90.0000

Upper Right Longitude:

180.0000

Provenance

Source:

For scenarios from the AR6 Scenarios Database Byers, E. et al. 2022. AR6 Scenarios Database. International Institute for Applied Systems Analysis. Available at: https://data.ece.iiasa.ac.at/ar6/# Doi: 10.5281/zenodo.5886912 For the Short-term policy assessment for 2030: • Current policies: Table 4.2, Chapter 4 (based on Climate Action Tracker 2021; den Elzen et al. 2021; Nascimento et al. 2021; JRC 2021; Riahi et al. 2021) • NDCs: Table 4.3, Chapter 4 (based on Climate Action Tracker 2021; den Elzen et al. 2021; Nascimento et al. 2021; JRC 2021; Meinshausen et al. 2021) For Past GHG emissions line 2010 to 2015: Nicholls et al., N., 2020 Geosci. Model Dev., 13, 5175–5190, 2020 https://doi.org/10.5194/gmd-13-5175-2020 For Past GHG emissions uncertainty bars: Minx, J. C., Lamb, W. F., et al: A comprehensive and synthetic dataset for global, regional, and national greenhouse gas emissions by sector 1970–2018 with an extension to 2019, Earth Syst. Sci. Data, 13, 5213–5252, https://doi.org/10.5194/essd-13-5213-2021 , 2021. Data processing or treatment: Please see file "SPM.4_Data_Processing_or_Treatment.docx" in Data Downloads.

Purpose:

Data used by Intergovernmental Panel on Climate Change (IPCC) authors and supplied for archiving to MetadataWorks Ltd by the Technical Support Unit (TSU) for IPCC Working Group III (WG III).