New paper on climate sensitivity estimates 1.1 ± 0.4 °C for a doubling of CO2

This new paper (in review at the discussions section) at Climate of the Past has some interesting approaches  using Oxygen 18 isotope records from benthic foraminiferas acquired in Deep Sea…

An independent constraint on climate sensitivity

Guest post by Christopher Monckton of Brenchley Abstract Global CO2 emissions per unit increase in atmospheric CO2 concentration provide an independent constraint on climate sensitivity over the timescale of the…

BEST, Volcanoes and Climate Sensitivity

Guest Post by Willis Eschenbach I’ve argued in a variety of posts that the usual canonical estimate of climate sensitivity, which is 3°C of warming for a doubling of CO2,…

Throwing down the gauntlet on reproducibility in Climate Science – Forest et al. (2006)

After spending a year trying to get the data from the author without success, Nic Lewis has sent a letter to the editor of Geophysical Research Letters (GRL) and has…

A Demonstration of Negative Climate Sensitivity

Guest Post by Willis Eschenbach Well, after my brief digression to some other topics, I’ve finally been able to get back to the reason that I got the CERES albedo…

Time Lags in the Climate System

Guest Post by Willis Eschenbach Did you ever sit on a hot sand beach and dig your hand down into the sand? You don’t have to dig very far before…

Observations on TOA Forcing vs Temperature

I recently wrote three posts (first, second, and third), regarding climate sensitivity. I wanted to compare my results to another dataset. Continued digging has led me to the CERES monthly…

Sun and Clouds are Sufficient

Guest Post by Willis Eschenbach In my previous post, A Longer Look at Climate Sensitivity, I showed that the match between lagged net sunshine (the solar energy remaining after albedo…

A Longer Look at Climate Sensitivity

Guest Post by Willis Eschenbach After I published my previous post, “An Observational Estimate of Climate Sensitivity“, a number of people objected that I was just looking at the average…

An Observational Estimate of Climate Sensitivity

Guest Post by Willis Eschenbach “Climate sensitivity” is the name for the measure of how much the earth’s surface is supposed to warm for a given change in what is…

Why there cannot be a global warming consensus

By Christopher Monckton of Brenchley In a previous post, I explained that many of the climate-extremists’ commonest arguments are instances of logical fallacies codified by Aristotle in his Sophistical Refutations…

Lower Climate Sensitivity Estimates: New Good News

Guest post by Chip Knappenberger, republished with permission from Master Resource (now on WUWT’s blogroll) “A collection of research results have been published in the peer-reviewed scientific literature in recent…

Triangular Fuzzy Numbers and the IPCC

Guest Post by Willis Eschenbach I got to thinking about “triangular fuzzy numbers” regarding the IPCC and their claims about how the climate system works. The IPCC, along with the…

Feedback about feedbacks and suchlike fooleries

By Christopher Monckton of Brenchley Responses to my post of December 28 about climate sensitivity have been particularly interesting. This further posting answers some of the feedback. My earlier posting…

Sense and sensitivity

By Christopher Monckton of Brenchley Reed Coray’s post here on Boxing Day, commenting on my post of 6 December, questions whether the IPCC and science textbooks are right that without…

Senseless about sensitivity

The speculative press release below is from the University of Gothenburg.  After having a paper published earlier this year  in Science that argues climate sensitivity might be lower than the…

Senior NCAR scientist admits: "Quantifying climate sensitivity from real world data cannot even be done using present-day data…"

Whoo boy… just a few days ago it was argued in a new peer reviewed paper published in Science that climate sensitivity might be lower than the IPCC stated in…

New study in Science shows climate sensitivity overestimated

From Oregon State University  some news the team and especially Kevin Trenberth just really don’t want to hear. I covered this on a tip from Dr. Pat Michaels back on…

Climate sensitivity- lowering the IPCC "fat tail"

By Dr. Pat Michaels at World Climate Report A new, lower estimate of climate sensitivity There is word circulating that a paper soon to appear in Science magazine concludes that…

1 K or not 1 K? That is the question

By Christopher Monckton of Brenchley I am very grateful for the many thoughtful postings in response to my outline of the fundamental theoretical upper bound of little more than 1.2…

Monckton on "pulling Planck out of a hat"

By Christopher Monckton of Brenchley My commentary written for Remote Sensing on the empirical determination of climate sensitivity, published by the splendid Anthony Watts some days ago, has aroused a…

Monckton's letter to the journal Remote Sensing

Christopher Monckton writes in email: I sent the attached commentary to the journal a week back and have not had so much as an acknowledgement. So do feel free to…

New paper claims a value one seventh of the IPCC best estimate for Climate Sensitivity for a CO2 doubling

Paul Ostergaard writes via email: Here is an interesting new paper that Miklos Zagoni has pointed me to via Judith Curry’s blog. This researcher in Germany has carried out a…

Pielke Sr. on Zeke's zinger

Guest post by Dr. Roger Pielke Senior Missing The Major Point Of “What Is Climate Sensitivity” There is a post by Zeke on Blackboard titled Agreeing [See also the post on Climate…