Climate Sensitivity Deconstructed

Guest Post by Willis Eschenbach I haven’t commented much on my most recents posts, because of the usual reasons: a day job, and the unending lure of doing more research,…

Australian scientists take 6 degrees of global warming off the table, say it is closer to 2 degrees

From the University of Melbourne Scientists narrow global warming range Australian scientists have narrowed the predicted range of global warming through groundbreaking new research. Scientists from the University of Melbourne and Victoria…

Updated climate sensitivity estimates using aerosol-adjusted forcings and various ocean heat uptake estimates

Guest essay by Nic Lewis The Otto et al. paper has received a great deal of attention in recent days. While the paper’s estimate of transient climate response was low,…

Model Climate Sensitivity Calculated Directly From Model Results

Guest Post by Willis Eschenbach [UPDATE: Steven Mosher pointed out that I have calculated the transient climate response (TCR) rather than the equilibrium climate sensitivity (ECS). For the last half…

Why the new Otto et al climate sensitivity paper is important – it's a sea change for some IPCC authors

Yesterday, WUWT was honored to have a guest essay by co-author Nic Lewis on the new Otto et al paper that pegs Transient Climate Response (TCR) at 1.3°C along with Equilibrium…

New paper shows transient climate response less than 2°C

See also: Why the new Otto et al climate sensitivity paper is important – it’s a sea change for some IPCC authors New energy-budget-derived estimates of climate sensitivity and transient…

New paper from Otto et al and Nic lewis shows transient climate sensitivity less than 2C

UPDATE: this post has been superseded by the new guest essay from Nic Lewis which you can see here: New paper shows transient climate response less than 2°C

Claim: How the IPCC arrived at climate sensitivity of about 3 deg C instead of 1.2 deg C.

UPDATE from Girma: “My title should have been ‘How to arrive at IPCC’s climate sensitivity estimate’ instead of the original” Guest essay by Girma Orssengo, PhD 1) IPCC’s 0.2 deg…

The beginning of the end: warmists in retreat on sea level rise, climate sensitivity

The forecast: It seems there’s less chance of gloom and doom these days. For sea level rise, now a maximum of about two feet by 2100. As for climate sensitivity,…

A compilation of lower climate sensitivities, plus a new one

Still Another Low Climate Sensitivity Estimate Guest post By Patrick J. Michaels and Paul C. “Chip” Knappenberger Global Science Report is a weekly feature from the Center for the Study…

Some sense about sensitivity

Excerpts from The Register, coverage of the Nic Lewis paper. This graph below from Bishop Hill shows that it isn’t just one paper, but several now that show lower climate…

A Comparison Of The Earth's Climate Sensitivity To Changes In The Nature Of The Initial Forcing

Guest post by Bob Irvine ABSTRACT The Earth’s feedback response to warming is independent of the nature of the forcing that caused that warming. The question I intend to examine…

How well did Hansen (1988) do?

Guest Post by Ira Glickstein. The graphic from RealClimate asks “How well did Hansen et al (1988) do?” They compare actual temperature measurements through 2012 (GISTEMP and HadCRUT4) with Hansen’s…

Emergent Climate Phenomena

Guest Post by Willis Eschenbach In a recent post, I described how the El Nino/La Nina alteration operates as a giant pump. Whenever the Pacific Ocean gets too warm across…

The Revkin-Gavin debate on lower climate sensitivity

Lower climate sensitivity is getting some mainstream discussion. Last week at WUWT, we had this story: BREAKING: an encouraging admission of lower climate sensitivity by a ‘hockey team’ scientist, along…

The yearly lukewarm report

UPDATE: Andrew Revkin has a similar story today, see below. Robert Bradley, who runs Master Resource, a blog about energy and climate, gave me unsolicited permission to reprint this article…

Josh on lying for 'the cause'

James Annan writes on his blog here: http://julesandjames.blogspot.co.uk/2013/02/a-sensitive-matter.html “Interestingly, one of them stated quite openly in a meeting I attended a few years ago that he deliberately lied in these sort…

Playing the global warming morality card in my local newspaper – a religious experience?

Even ad engines see the religious connection to global warming Lately there’s been an ongoing series of rants in my local newspaper, the Chico Enterprise Record, from global warming activists…

BREAKING: an encouraging admission of lower climate sensitivity by a 'hockey team' scientist, along with new problems for the IPCC

UPDATE: Annan now suggests the IPCC “is in a bit of a pickle”, see below. UPDATE2: Title has been changed to reflect Annan’s new essay, suggesting lying for political purposes…

Yet another study shows lower climate sensitivity

Global warming less extreme than feared? Policymakers are attempting to contain global warming at less than 2°C. New estimates from a Norwegian project on climate calculations indicate this target may…

Does The Effect From The Cause Affect The Cause?

Guest Post by Willis Eschenbach There’s been a recent paper claiming a long-term correlation between CO2 and sea level, discussed here at WUWT. The paper implies that CO2 controls temperature…

Bethlehem and the rat-hole problem

By Christopher Monckton of Brenchley In the closing minutes of the final plenary of the U.N.’s Doha climate summit, when no one else had anything further to add, I spent…

Why doesn't the AR5 SOD's climate sensitivity range reflect its new aerosol estimates?

This article is a detailed complement to Matt Ridley’s Op-Ed today in the Wall Street Journal: Cooling Down the Fears of Climate Change Evidence points to a further rise of…

An Interim Look At Intermediate Sensitivity

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…