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Topic: AR6

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[Episode #173] – IPCC AR6 Part 2

May 25 2022

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 #172] – IPCC AR6 Part 1

May 11 2022

Mini Episode

The IPCC published the final part of its Sixth Assessment (“AR6”), the Working Group III report, on April 4, 2022. The IPCC's Working Group III report contains assessments of how the energy transition can reduce emissions in the context of an updated outlook for global warming. Together, the three reports of AR6 comprise over 6,000 pages of material, so we have chosen to focus our coverage on the Working Group III report, which we present in two episodes.

In this first episode on AR6, we speak with one of the lead authors of the Working Group III report, energy researcher Benjamin Sovacool of the University of Sussex. We discuss some major advances in AR6 over the AR5 report of eight years ago; the gaps between our national climate action ambitions, what is really needed to limit warming to 1.5 or 2°C, and some ways that those gaps can be closed; how market-based financial approaches can be harnessed to reduce carbon; the importance of equity and “just transition” strategies; the challenge of path dependency and technology lock-in; how political economy can inhibit taking action on climate; the roles that non-government actors and individuals can play in the transition; and the various ways of decarbonizing transportation and providing better low-carbon mobility.

Our second episode on AR6, Episode #173, will review the updated figures for the remaining carbon budget, and consider the pathways and probabilities for limiting warming to 1.5 and 2°C.

Geek rating: 5

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[Episode #156] – 6-Year Anniversary Show

Sep 29 2021

Mini Episode

In this sixth-anniversary show, we welcome back energy researcher Jonathan Koomey to help us review some of the hot topics in energy transition over the past year.

Topics in this discussion include:

The energy elements of the bipartisan infrastructure bill that passed the Senate, and how they stack up against the actual infrastructure needs of the US.
Highlights from the new climate assessment report from the IPCC, and the disconnect between how that modeling framework is structured, and what policymakers and journalists really need. We also try to identify how climate scientists can be more helpful in communicating the path the world is currently on.
The case for and against divestment and other supply-side strategies to reduce the consumption of fossil fuels.
The zombie theory of ‘value deflation’ in solar, and why it’s mistaken.
Corruption in the nuclear industry, and why climate hawks must start getting more discerning about who they are backing in the struggle to take action on climate change.
The energy requirements of the Internet and Bitcoin mining.
A new tool to explore the EIA’s vast stores of data.

In the news segment, we review the ongoing efforts in Congress to electrify the US Postal Service vehicle fleet; we update two stories about corruption associated with the US nuclear industry; we hail the world’s first production of a batch of steel without using fossil fuels; we have a look at the world’s largest battery storage system; and we note a major blow to the credibility of “blue hydrogen.”

Geek rating: 8

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[Episode #117] – Climate Science Part 12b – Improving Climate Modeling

Mar 18 2020

Mini Episode

Are the climate change scenarios produced by the Intergovernmental Panel on Climate Change (IPCC) accurately representing our likely futures, or are they rooted in outdated data that doesn’t represent the progress we’re already making on energy transition? Is the world on a “business as usual” path to climate doom in a world that’s 5°C warmer, or are we actually within reach of limiting warming to 2°C by the end of this century?

In this episode, we ask two experts to debate these questions in the very first extended three-way conversation on this podcast. Representing the energy analyst’s critique of the IPCC models is Bloomberg New Energy Finance founder Michael Liebreich. And representing the IPCC modeling work is Dr. Nico Bauer, an integrated assessment modeler with the Potsdam Institute who has helped develop the Shared Socioeconomic Pathways used in the IPCC framework.

This episode is part two of that three-hour conversation. Part one was featured in Episode #116. Together, those two episodes make Part 12 of our mini-series on climate science.

Geek rating: 10

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[Episode #116] – Climate Science Part 12a – Improving Climate Modeling

Mar 4 2020

Mini Episode

Are the climate change scenarios used by the Intergovernmental Panel on Climate Change (IPCC) accurately representing our likely futures, or are they rooted in outdated perspectives that don't represent the progress we’re already making on energy transition? Is the world on a “business as usual” path to climate doom in a planet that’s 5°C warmer, or are we actually within reach of limiting warming to 2°C by the end of this century?

In this episode, we ask two experts to debate these questions in the very first extended three-way conversation on this podcast. Representing the energy analyst’s critique of the IPCC models is Bloomberg New Energy Finance founder Michael Liebreich. And representing the modeling work that informs the IPCC process is Dr. Nico Bauer, an integrated assessment modeler with the Potsdam Institute who has helped develop the Shared Socioeconomic Pathways used in the IPCC framework.

This episode is part one of that three-hour conversation. Part two will be featured in Episode #117. Together, those two episodes make Part 12 of our mini-series on climate science.

Geek rating: 10

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