This post examines the scenarios and pathways used over the years by the Intergovernmental Panel on Climate Change (IPCC) to represent possible future emissions, atmospheric concentrations, and temperature changes. In particular, it seeks to determine which, if any, of the current Representative Concentration Pathways (RCPs) can be regarded as “business […]
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Teaching Climate Change through Six Questions
Given all the back and forth on climate change out there, it can be hard to know what to think. It’s also a complicated...
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Tail Risk vs. Alarmism
The American Association for the Advancement of Science just published a statement on climate risk (link) on which I...
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Cause & Effect
Why are scientists so confident that a business as usual future based on fossil fuels will lead to major changes in...
J. Christy, R. McNider & R. Spencer trying to overturn mainstream science by rewriting history, knowingly spreading falsehoods and re-baselining graphs.
Who are the Flat Earthers? Before the advent of modern climatology, common wisdom had it that we tiny humans couldn’t possibly influence climate. Modern science shows we can. Yet John Christy and Richard McNider claim the exact opposite in a recent WSJ op-ed, in which they claim that their outdated […]
Read more ›What We Know about Climate
My name is Andrew Dessler, I am a professor of atmospheric sciences at Texas A&M. In my testimony, I will review what I think is the most important conclusions that the scientific community has reached in over two centuries of work on climate. Conclusions The climate is warming. By this […]
Read more ›Your Logic Escapes Me
[Update 1-23-14 1600 GMT: Judith Curry explains her logic. I’ve added it to the end of this post, with my commentary.] Several times during the past few months, I’ve heard generally incredulous statements such as, “How can the IPCC increase their confidence in anthropogenic global warming at the same time […]
Read more ›The Weather Trap
Climate change is something that’s difficult to experience directly. How many people can say, from personal experience, that it feels like the average temperature in your hometown, let alone the globe, has changed by a degree or two over the past century? Instead, people tend to try to detect climate […]
Read more ›The Public Debate on Climate Change
The physical complexity of global climate is evident. However, resolving the issue of global warming is also socially and politically complex. It is not an isolated problem with an easy solution, since almost every human action requires energy and/or land use (and thus results in climate altering emissions). In contrast, […]
Read more ›Letter to Fellow Physical Scientists by Dr. John Nielsen-Gammon
I’m part of a new journalistic endeavor called the Climate Change National Forum (CCNF). The purpose of this web site is to provide a public forum wherein scientists can discuss the latest research on climate change and share and debate ideas on aspects of climate change especially relevant to policymaking. When the second […]
Read more ›CCNF Member Columnists:
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John Anderson
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Jim Bouldin
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John Nielsen-Gammon
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Barry Lefer
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Kerry Emanuel
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Andrew Dessler
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Mauri Pelto
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Lulu Liu
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Andreas Schmittner
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Scott Denning
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Jeremy Shakun
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Michael Tobis
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Sean Bryan
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Stephanie Thomas
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Sean Robinson
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Daniel Cohan
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Judith Curry
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Will Howard
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Eric Galbraith
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Muge Komurcu
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Ron Sass
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David Hone
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Eric Steig
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Tracy Hester
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Shi-Ling Hsu
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Bob Inglis
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Jed Anderson
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Josiah Neeley
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Andy OBrien
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Peter Sinclair
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Bruno Marino
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Benjamin Franta
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Suzanne Waldman