Tag Archives: Climate sensitivity

An Interim Look At Intermediate Sensitivity

Posted on December 10, 2012 by

Guest Post by Willis Eschenbach Whenever I find myself growing grim about the mouth; whenever it is a damp, drizzly November in my soul; whenever I find myself involuntarily pausing before coffin warehouses, and bringing up the rear of every … Continue reading →

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Posted in Climate sensitivity | Tagged , , , | 92 Comments

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

Posted on October 5, 2012 by

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 Drilling project (DSDP) on the Kerguelen Plateau off the coast … Continue reading →

Posted in Climate sensitivity | Tagged , , | 152 Comments

An independent constraint on climate sensitivity

Posted on August 31, 2012 by

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 available data (1960-2008), suggesting that, in the short term and … Continue reading →

Posted in Climate sensitivity | Tagged , , | 169 Comments

BEST, Volcanoes and Climate Sensitivity

Posted on August 13, 2012 by

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, is an order of magnitude too large. Today, at the … Continue reading →

Posted in Berkeley Earth Surface Temperature, Climate sensitivity, Volcanoes | Tagged , , , , , , | 89 Comments

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

Posted on June 25, 2012 by

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 written to me to ask that I bring attention to … Continue reading →

Posted in Climate sensitivity, Modeling, Peer review | Tagged , , , , , , , , | 82 Comments

A Demonstration of Negative Climate Sensitivity

Posted on June 19, 2012 by

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 and radiation data in the first place. This was to … Continue reading →

Posted in Albedo, Climate sensitivity | Tagged , , , , | 113 Comments

Time Lags in the Climate System

Posted on June 18, 2012 by

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 you get to cool sand … but even though it’s … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , | 118 Comments

Observations on TOA Forcing vs Temperature

Posted on June 12, 2012 by

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 global albedo dataset from the Terra satellite. It’s an outstanding set, … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , | 182 Comments

Sun and Clouds are Sufficient

Posted on June 4, 2012 by

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 reflections) and the observational temperature record is quite good. However, … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , | 219 Comments

A Longer Look at Climate Sensitivity

Posted on May 31, 2012 by

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 annual cycle. On a time scale of decades, they said, … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , | 228 Comments

An Observational Estimate of Climate Sensitivity

Posted on May 29, 2012 by

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 called “forcing”. A change in forcing means a change in … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , | 252 Comments

Why there cannot be a global warming consensus

Posted on April 23, 2012 by

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 2300 years ago. Not the least of these is the … Continue reading →

Posted in Global warming | Tagged , , , , , , , | 234 Comments

Lower Climate Sensitivity Estimates: New Good News

Posted on March 19, 2012 by

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 months that buoys my hopes for a low-end climate sensitivity.” … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , , | 69 Comments

Triangular Fuzzy Numbers and the IPCC

Posted on February 7, 2012 by

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 climate establishment in general, make what to me is a … Continue reading →

Posted in IPCC | Tagged , , , , , , , | 106 Comments

Feedback about feedbacks and suchlike fooleries

Posted on December 30, 2011 by

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 explained how the textbooks establish that if albedo and insolation … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , , | 244 Comments

Sense and sensitivity

Posted on December 28, 2011 by

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 any greenhouse gases the Earth’s surface temperature would be 33 … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , , | 139 Comments

Senseless about sensitivity

Posted on December 21, 2011 by

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 IPCC stated in AR4, we have a new press release … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , , | 46 Comments

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

Posted on November 28, 2011 by

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 AR4. Now we have this damning admission from Dr. Tom … Continue reading →

Posted in Climate sensitivity, Climategate | Tagged , , , , , , , | 75 Comments

New study in Science shows climate sensitivity overestimated

Posted on November 25, 2011 by

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 Nov 9th titled: Climate sensitivity- lowering the IPCC “fat tail” and … Continue reading →

Posted in Climate sensitivity | Tagged , , , , , , | 95 Comments

Climate sensitivity- lowering the IPCC “fat tail”

Posted on November 9, 2011 by

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 the climate sensitivity—how much the earth’s average temperature will rise … Continue reading →

Posted in Climate sensitivity | Tagged , , , , | 137 Comments