You Ought to Have a Look is a feature from the Center for the Study of Science, posted by Patrick J. Michaels and Paul C. (“Chip”) Knappenberger. While this section will feature all of the areas of interest that we are emphasizing, the prominence of the climate issue is driving a tremendous amount of web traffic. Here we post a few of the best in recent days, along with our color commentary.
Leaving the election results aside (noting that they were bad for the Obama administration’s ill-founded and executive-ordered climate policies), we highlight a couple (among the many) interesting climate change–related tidbits scattered among the intertubes.
The first is an analysis of what was left out of the latest (final?) report from the United Nations’ Intergovernmental Panel on Climate Change (IPCC), conducted by Marcel Crok, a Dutch journalist who covers climate change with a somewhat skeptical eye.
Crok recently partnered up with climate researcher Nic Lewis to produce a major analysis of climate sensitivity—one of the key parameters in helping to understand how much influence human activities will have on the future climate—for the United Kingdom’s Global Warming Policy Foundation (another site that you’ll surely be hearing from in these pages from time to time). Lewis and Crok found that the IPCC greatly overestimated the climate sensitivity based on a critical review of the extant scientific literature on the topic.
In a post this week on his blog (which is sometimes written in Dutch), Crok compares how the IPCC treatment of climate sensitivity changed from being-front-and-center in its 2007 Fourth Assessment Report to being nearly buried in its 2014 Fifth Assessment Report.
Why the change? Because the more people look at climate sensitivity, the less it looks like the IPCC produced a very good “assessment” of it. Virtually the entirety of their reports are premised on a climate sensitivity of around 3.5°C. A much more realistic value is around 2.0°C—a difference so large as to consign most of the IPCC reports to the dustbin of climate history.