Are Climate Feedbacks Strongly Non-Linear?

Is it possible that the Earth’s system is strongly buffered with strong positive ice and dust feedbacks prevailing at colder temperatures, and strong negative convection/evaporation feedbacks prevailing in warmer times?

The Greenhouse Effect In A Water World

There are multiple lines of evidence, however, that challenge the strong water vapour feedback to a small initial CO2 forcing. These strong positive feedbacks are central to the IPCC narrative.

An Electronic Analog to Climate Feedback

Here we simulate a “test rig” for illustrating the difference between Christopher Monckton’s approach to projecting equilibrium climate sensitivity (“ECS”) and what he says climatology’s approach is. (ECS is the…

Cloud Feedback, if there is any, is Negative

Guest post by Mike Jonas, Maybe, after all the attention being paid to the Wuhan virus, it’s time to do a bit of climate science again. I have submitted a…

Models, Feedbacks, And Propagation Of Error

Guest post by Kevin Kilty Introduction I had contemplated a contribution involving feedback diagrams, systems of equations, differential equations, and propagation of error ever since Nick Stoke’s original contribution about…

Answer to a whigmaleerie about temperature feedback

By Christopher Monckton of Brenchley Some days ago, a prolix, inspissate whigmaleerie was posted here – a gaseous halation, an unwholesome effluvium, an interminable and obscurantist expatiation purporting to cast…

Climatology’s startling error of physics: answers to comments

Answers to comments from the original essay on WUWT, here. By Christopher Monckton of Brenchley I make no apology for returning to the topic of the striking error of physics…

Looping the loop: how the IPCC's feedback aerobatics failed

Guest essay By Christopher Monckton of Brenchley This series discusses climatology’s recently-discovered grave error in having failed to take due account of the large feedback response to emission temperature. Correct…

Another climate feedback found: ‘cooling effect of natural atmospheric particles is greater during warmer years’

  From the University of Leeds and the “settled science” department, comes this new idea that combines measurements with a model. Understanding the climate impact of natural atmospheric particles An…

Evaporation Redux

Guest Post by Willis Eschenbach I got to thinking again about the question of evaporation and rainfall. I wrote about it here a few years ago. Short version—when the earth’s…

Feedback on Feedbacks

Guest essay by Rud Istvan In recent weeks, there have been a number of WUWT guest posts on climate sensitivity related matters. Sensitivity is determined by feedbacks to increased CO2.…

How Climate Feedback is Fubar

Guest essay by George White Feedback is the most misunderstood topic in climate science and this misunderstanding extends to both sides of the debate. This is disturbing because the theoretical…

Cloud Feedback

Guest Post by Willis Eschenbach In the comments to Christopher Monckton’s latest post, Nick Stokes drew attention to Soden and Held’s analysis of feedback in the climate models. I reproduce their Table…

Soil feedbacks are a big uncertainty in climate change

From the YALE SCHOOL OF FORESTRY & ENVIRONMENTAL STUDIES Managing uncertainty: How soil carbon feedbacks could affect climate change There is more than twice as much carbon in the planet’s…

Claim: Future global warming could be even warmer

From the UNIVERSITY OF COPENHAGEN – NIELS BOHR INSTITUTE and the “worse than we thought” department comes this claim by one researcher looking at the past climate events, specifically the PETM,…

Problems With Analyzing Governed Systems

Guest Post by Willis Eschenbach I’ve been ruminating on the continuing misunderstanding of my position that a governor is fundamentally different from simple feedback. People say things like “A governor…

A reply to Born: How to represent temperature feedbacks in a simple model

By Christopher Monckton of Brenchley, David Legates, Willie Soon and Matt Briggs Mr. Born has had another go at our paper Why models run hot, published in January 2015 (PDF…

Cloud Feedback

Guest essay by Stan Robertson In a recent post entitled “Changes in Total Solar Irradiance” (http://wattsupwiththat.com/2014/10/25/changes-in-total-solar-irradiance/ ), Willis Eschenbach showed a plot of the solar irradiance that impinges at the…

BOMBSHELL: Study shows greenhouse gas induced warming dropped for the past 14 years

Paper finds a decrease of IR radiation from greenhouse gases over past 14 years, contradicts expected increase – cloudiness blamed for difference. A paper published in the Journal of Climate…

New study claims to confirm water vapor as global warming amplifier – but other data says no

Just because something is said to be an amplifier doesn’t mean it actually is doing so, plus other datasets don’t show an increase in water vapor.  See below. Also, you…

Uncertainty in the dirt: another climate feedback loop

From the Carnegie Institution  Climate change and the soil Climate warming may not drive net losses of soil carbon from tropical forests Washington, DC — The planet’s soil releases about…

Study: irrigation causes 'significant cooling of global average surface temperatures over land'

From the HockeySchtick: A paper published last week in Climate Dynamics finds man-made agricultural irrigation “causes significant cooling of global average surface air temperatures over land and dampens regional warming…

Nature abhors a positive feedback

Negative Feedback Prevents Harmful Temperatures from Carbon Dioxide Guest essay by Bryce Johnson The purpose of the article is to contribute to refuting the false alarm that has been generated…

New paper: man-made aerosols have had a net cooling effect since beginning of industrial revolution

More aerosols, means more clouds, which means cooler temperatures. Now that we are cleaning up aerosols worldwide, this may explain why the Earth is getting slightly warmer – more sunlight…