By Charles Blaisdell PhD ChE The earth’s cloud cover has long been an important puzzle in climate change. Cloud cover has many types and varies significantly from year to year. …
Search Results for: cloud feedback
Ice Ages, Feedback Diagrams, and Climate Triggers
As well defined turning points in response and a limit-cycle of operation are long established characteristics of relay control systems, I submit that Earth’s climate regulation is non-linear in much…
Uncertain Clouds
Guest Post by Willis Eschenbach I read an interesting quote in the latest Climanifesto from the Intergovernmental Panel on Climate Change, their Sixth Assessment Report, known as “IPCC AR6” to…
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?
Clouds and Global Warming
By Andy May This post is inspired by an old post on the CERES cloud data by Willis Eschenbach that I’ve read and re-read a lot, “Estimating Cloud Feedback Using…
Clouds From Both Sides Now
Guest Post by Willis Eschenbach Clouds are said to be the largest uncertainty in climate models, and I can believe that. Their representation in the models is highly parameterized, each…
Climate Scientists Admit Clouds are Still a Big Unknown
Admitting some cloud error is as close as most climate modellers come to admitting their projections are not fit for purpose. Note the image is from Pat Frank’s paper about…
Increased warming in latest generation of climate models likely caused by clouds
As scientists work to determine why some of the latest climate models suggest the future could be warmer than previously thought, a new study indicates the reason is likely related…
Does the Climate System Have a Preferred Average State? Chaos and the Forcing-Feedback Paradigm
Reposted from Dr. Roy Spencer’s website October 25th, 2019 by Roy W. Spencer, Ph. D. NOTE: I have written on this subject before, but it is important enough that we…
Emulation, ±4 W/m² Long Wave Cloud Forcing Error, and Meaning
Guest post by Pat Frank My September 7 post describing the recent paper published in Frontiers in Earth Science on GCM physical error analysis attracted a lot of attention, consisting…
Remystifying Climate Feedback
By Joe Born 1. Introduction By presenting actual calculation results from a specific feedback-system example, the plots below will put some graphical meat on the verbal bones of Nick Stokes’…
Demystifying feedback.
Guest post by Nick Stokes, People outside climate science seem drawn to feedback analogies for climate behaviour. Climate scientists sometimes make use of them too, although they are not part…
Experts reveal that clouds have moderated warming triggered by climate change
A new study has revealed how clouds are modifying the warming created by human-caused climate change in some parts of the world Swansea University A new study has revealed how…
No, Increasing CO2 isn’t going to trigger a hot world without clouds.
From Dr. Roy Spencer’s blog, March 1st, 2019 by Roy W. Spencer, Ph. D. I’ve received many more requests about the new disappearing-clouds study than the “gold standard proof of…
Data: Global Temperatures Rose As Cloud Cover Fell In the 1980s and 90s
Climatologist Dr. Roy Spencer has pointed out in his book, “The most obvious way for warming to be caused naturally is for small, natural fluctuations in the circulation patterns of the…
Negative climate feedback: more ships in the Arctic mean more cooling
This article claim ships will “be able to sail right over the North Pole” by 2050 due to warming, but at the same time say ship tracks will make more…
Open thread – looking for feedback on the website migration
As many of you regular readers know over the past few weeks I have done a complete migration of the website over to a new Cloud Server. The first week…
A factual comment on Willlis Eschenbach’s and Christopher Monckton’s most recent posts, concerning clouds and ECS, respectively.
Guest opinion by Rud Istvan I have but little scientifically to contribute, since they have been mostly factually correct. But here I provide a little more scientific evidence, visual observational…
CERES Edition 4 and the Cloud Radiative Effect
Guest Post by Willis Eschenbach One of the enduring questions in climate involves what is usually called “cloud feedback”. When the earth warms up a bit, the clouds change in…
A Cloudy Question: was 'the pause' caused by a change in global cloud cover?
Guest essay by Mike Jonas I have been looking at some cloud data (from ISCCP: isccp.giss.nasa.gov all available monthly “EQ” data (equal-area grid)) and an interesting question arises. I haven’t…
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.…
Another unaccounted for climate variable: Airplanes make existing clouds brighter
From STOCKHOLM UNIVERSITY and the department of negative feedbacks comes this surprising finding that says not only do contrails add reflectivity for incoming solar radiation, they also increase reflectivity for…
Negative Climate Feedbacks are Real and Large
Guest essay by Leland Park Global warming theories propose positive feedbacks to explain magnified greenhouse effects that might trigger catastrophic warming. Naturally, any clues in temperature observations that might indicate…
Cooling and Warming, Clouds and Thunderstorms
Guest Post by Willis Eschenbach Following up on a suggestion made to me by one of my long-time scientific heroes, Dr. Fred Singer, I’ve been looking at the rainfall dataset…
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