Lee, Hoesung and Calvin, Katherine and Dasgupta, Dipak and Krinmer, Gerhard and Mukherji, Aditi and Thorne, Peter and Trisos, Christopher and Romero, Jose and Aldunce, Paulina and Barret, Ko and Blanco, Gabriel and Cheung, William W.L. and Connors, Sarah L. and Denton, Fatima and Diongue-Niang, Aïda and Dodman, David and Garschagen, Matthias and Geden, Oliver and Hayward, Bronwyn and Jones, Christopher and Jotzo, Frank and Krug, Thelma and Lasco, Rodel and Lee, June-Yi and Masson-Delmotte, Valerie and Meinshausen, Malte and Mintenbeck, Katja and Mokssit, Abdalah and Otto, Friederike E. L. and Pathak, Minal and Pirani, Anna and Poloczanska, Elvira and Pörtner, Hans-Otto and Revi, Aromar and Roberts, Debra C. and Roy, Joyashree and Ruane, Alex C. and Skea, Jim and Shukla, Priyadarshi R. and Slade, Raphael and Slangen, Aimée and Sokona, Youba and Sörensson, Anna A and Tignor, Melinda and Vuuren, Detlef van and Wei, Yi-Ming and Winkler, Harald and Zhai, Panmao and Zommers, Zinta (2023) Synthesis report of the IPCC Sixth Assessment Report (AR6), Longer report. IPCC. Technical Report. Intergovernmental Panel on Climate Change (IPCC).

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Abstract

This Synthesis Report (SYR) of the IPCC Sixth Assessment Report (AR6) summarises the state of knowledge of climate change, its widespread impacts and risks, and climate change mitigation and adaptation, based on the peer-reviewed scientific, technical and socio-economic literature since the publication of the IPCC’s Fifth Assessment Report (AR5) in 2014. The assessment is undertaken within the context of the evolving international landscape, in particular, developments in the UN Framework Convention on Climate Change (UNFCCC) process, including the outcomes of the Kyoto Protocol and the adoption of the Paris Agreement. It reflects the increasing diversity of those involved in climate action. This report integrates the main findings of the AR6 Working Group reports1 and the three AR6 Special Reports. It recognizes the interdependence of climate, ecosystems and biodiversity, and human societies; the value of diverse forms of knowledge; and the close linkages between climate change adaptation, mitigation, ecosystem health, human well-being and sustainable development. Building on multiple analytical frameworks, including those from the physical and social sciences, this report identifies opportunities for transformative action which are effective, feasible, just and equitable using concepts of systems transitions and resilient development pathways. Different regional classification schemes are used for physical, social and economic aspects, reflecting the underlying literature. After this introduction, Section 2, ‘Current Status and Trends’, opens with the assessment of observational evidence for our changing climate, historical and current drivers of human-induced climate change, and its impacts. It assesses the current implementation of adaptation and mitigation response options. Section 3, ‘Long-Term Climate and Development Futures’, provides a long-term assessment of climate change to 2100 and beyond in a broad range of socio-economic futures. It considers long-term characteristics, impacts, risks and costs in adaptation and mitigation pathways in the context of sustainable development. Section 4, ‘Near-Term Responses in a Changing Climate’, assesses opportunities for scaling up effective action in the period up to 2040, in the context of climate pledges, and commitments, and the pursuit of sustainable development. Based on scientific understanding, key findings can be formulated as statements of fact or associated with an assessed level of confidence using the IPCC calibrated language5 . The scientific findings are drawn from the underlying reports and arise from their Summary for Policymakers (hereafter SPM), Technical Summary (hereafter TS), and underlying chapters and are indicated by {} brackets. Figure 1.1 shows the Synthesis Report Figures Key, a guide to visual icons that are used across multiple figures within this report.

Item Type:	Monograph (Technical Report)
Additional Information:	Core writing team noted here. For Contributing authors and extended writing team please check report.
Keywords:	Intergovernmental Panel on Climate Change (IPCC), Synthesis Report (SYR), IPCC’s Sixth Assessment Report (AR6)
Academic Unit:	Faculty of Social Sciences > Research Institutes > Irish Climate Analysis and Research Units, ICARUS Faculty of Social Sciences > Geography
Item ID:	17733
Depositing User:	Peter Thorne
Date Deposited:	28 Nov 2023 11:22
Publisher:	Intergovernmental Panel on Climate Change (IPCC)
URI:	Organisation
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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