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Topic: Carbon Budget

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[Episode #173] – IPCC AR6 Part 2

May 25 2022

Mini Episode

In this second part of our IPCC Sixth Assessment report (“AR6”) Working Group III coverage, we welcome back our friend and AR6 contributing author Glen Peters of the CICERO Center for International Climate Research. Longtime listeners will remember Glen from his explanation of the ‘carbon budget’ in Episode #57, and on the various scenarios for global warming, what they mean, and the current trajectory for climate change in Episode #112.

Glen was a lead author of AR6 Chapter 3, titled “Mitigation pathways compatible with long-term goals,” so in this episode, we discuss the latest figures for the remaining carbon budget; explore the probabilities for limiting warming to 1.5 and 2°C, and we consider the changing views on the role of direct carbon dioxide removal (CDR) and carbon capture and sequestration (CCS) as parts of the climate toolkit. Glen also gives us a very helpful explanation of some of the new terms and metrics used in AR6, such as the Illustrative Mitigation Pathways (IMPs), the warming Classification levels (C1-C8) and the other policy scenarios.

This is super-geeky but essential-to-understand stuff for anyone working on climate policy!

Geek rating: 8

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[Episode #57] – Climate Science Part 7 – Carbon Budget

Nov 29 2017

Mini Episode

In this seventh episode of our mini-series on climate change, we explore what carbon budgets really mean, and what they indicate about the pathways that might allow us to keep global warming below two degrees C.

Amid all the unavoidable uncertainty in modeling warming and the effects of our actions, what do we really know about how much warming we might see in the future? If it turned out that our carbon budget is larger than we used to think it was, would that change our policy direction? And which policy paths should we advocate?

Our guest in this episode, Dr. Glen Peters, is a veteran researcher on climate change whose current research focuses on the causes of recent changes in carbon dioxide emission trends at the global and country level, and how these changes link to future emission pathways consistent with global climate objectives. And after listening to this nearly two-hour conversation, as well as our previous six episodes on climate science, you will have a much better idea of how much warming we may yet expect!

Geek rating: 8

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