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Intergovernmental Panel on Climate Change (IPCC)

Why Cutting CO2 with Renewables Alone Means Betting Big on Efficiency: Behind the IPCC's Climate Stabilization Scenarios

December 9, 2014 by Suzanne Waldman
58

Nuclear Energy and IPCC Climate Models

What is the problem with leaning on renewable energy as a solution to the consequences of climate change? All-RE scenarios show one thing in particular, which is they all depend on increasingly intensive demand reductions over time to avert climate change.[read more]

The Final Stage of IPCC AR5: Last Week's Outcome in Copenhagen

November 6, 2014 by Robert Stavins
1

Last week, I was in Copenhagen for what was essentially the final stage of the five-year enterprise of research, writing, and government approval of the various reports of IPCC AR5. While I was there and since my return, many people have asked me how it went.[read more]

IPCC Report Released. Can and Will the World Act on Climate Change?

November 5, 2014 by Jared Anderson
9

IPCC Report Reactions

The Intergovernmental Panel on Climate Change (IPCC) released what it calls the Synthesis Report on Sunday, which incorporates findings from the IPCC Fifth Assessment Report produced by over 800 scientists and released over the past thirteen months.[read more]

Reflections on the IPCC Synthesis Report

November 5, 2014 by David Hone
2

The release of the IPCC 5th Assessment Report Synthesis document on Sunday was a useful reminder of the wealth of measurements, observations and science behind the reality of the anthropocene era and the impact it is having on global ecosystems.[read more]

The IPCC's Shifting Position on Nuclear Energy as a Climate Option

November 4, 2014 by Suzanne Waldman
117

The International Panel on Climate Change was formed in 1988 by the UN. Its report on Response Strategies in 1990 seemed fairly neutral about strategies, proposing “[e]xpansion of conventional nuclear power plants” along with “[s]tandardized design of nuclear power plants to improve economics and safety.[read more]

Climate Scientists Spell Out Stark Danger And Immorality Of Inaction In New Leaked Report

August 29, 2014 by Joseph Romm
4

Climate Science Report

The message from climate scientists about our ongoing failure to cut carbon pollution: The catastrophic changes in climate that we are voluntarily choosing to impose on our children and grandchildren — and countless generations after them — cannot plausibly be undone for hundreds of years or more.[read more]

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Why We Need CCS, Part 4: Carbon Negative Solutions

June 30, 2014 by Schalk Cloete
29

CCS and Carbon Negative Solutions

If climate science proves to be correct and the 450 ppm scenario is confirmed as a global priority in the medium-term future, we will probably require a very large scale deployment of CO2 negative technologies from the middle of this century. According to the IPCC, CCS will play a very important role in this regard.[read more]

Are the Semantics of Climate Change Assessments Fooling Us?

June 12, 2014 by Jessica Kennedy
2

The 1990 IPCC report contains warnings about effects of climate change in its “Summary for Policymakers” (which is great, because how many policymakers read the whole report?), but when the document is read more thoroughly, the language weakens the urgency for climate change action.[read more]

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Beyond Paris, Part 2: The Dire Consequences of Inaction

June 9, 2014 by Matthew Stepp

Climate Action and Inaction

What are the future impacts of a changing climate system? Extreme weather? Higher sea level? More drought and heat waves? Where will these impacts be felt the most? Answering these questions depends on a simple factor: the quantity of carbon emissions emitted in the coming decades.[read more]

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IPCC: "Rebound Effects Cannot Be Ignored"

May 21, 2014 by Jesse Jenkins
8

IPCC on Rebound Effects

Cost-saving energy efficiency measures can trigger a rebound in energy demand which can have the effect of eroding some of the climate benefits of efficiency, according to the Intergovernmental Panel on Climate Change's Fifth Assessment Report.[read more]

Buying the Time Necessary to Save the Planet

May 20, 2014 by Jim Baird
6

Climate Risk and the Future

 

The German economist Ottmar Edenhofer, who co-chaired the IPCC committee that wrote the most recent UN report, commented in the New York Times: “We cannot afford to lose another decade.” If we do it becomes extremely costly to achieve climate stabilization.[read more]

Understanding the IPCC: An Important Follow-Up

May 6, 2014 by Robert Stavins

A week ago, I wrote a blog about my frustrations with the approval process of one part of the Summary for Policymakers of the recent IPCC Report. Some in the more fringe elements of the press and blogosphere quickly capitalized on the situation by distorting the message of my original post.[read more]

Is the IPCC Government Approval Process Broken?

April 30, 2014 by Robert Stavins
1

Over the past 5 years, I have dedicated an immense amount of time and effort to serving as the Co-Coordinating Lead Author of Chapter 13, “International Cooperation: Agreements and Instruments,” of Working Group III of the Fifth Assessment Report of the IPCC.[read more]

IPCC Report Reactions: Act Now, Agree Later

April 27, 2014 by NRDC Switchboard
1

A recent report by the world’s leading scientists has concluded that immediate action is needed globally if we are to avoid the worst impacts of climate change. But with a global agreement on climate change not expected until 2015, we can’t afford to wait. We need to act now, agree later.[read more]

10 Charts that Explain Climate Change Mitigation (Plus 2 More that Explain Negotiation)

April 24, 2014 by Lindsay Wilson
2

Climate Change Mitigation and Negotiation

I really love the IPCC (high confidence), but if you read the summary for policymakers (medium confidence), some of the wording doesn’t exactly role of the tongue (robust evidence, medium agreement). You know what I mean? (medium evidence, medium agreement).[read more]