Claim: Clouds Less Climate-Sensitive than Assumed

Whether clouds have a cooling or warming effect depends on how high they are. With a maximum altitude of two to three kilometers, the trade-wind clouds examined here are comparatively…

CO2 is Innocent but Clouds are Guilty.  New Science has Created a “Black Swan Event”**

The modelers of the 1990’s where on the right track – if clouds change the results would be as strong as the that expected from CO2.  The IPCC should evaluate…

An Interview with Top Climate Scientist Bjorn Stevens

We should keep looking, but so far there’s no evidence that clouds play a major role.

Global Scatterplots

Guest Post by Willis Eschenbach For a while now, I’ve been using a curious kind of scatterplot. Here’s an example. It shows the relationship between the surface temperature and the…

Updated Climate Models Clouded by Scientific Biases, Researchers Find

After all, the ultimate goal of any model evaluation study is to help improve those models.”

Thoughts About Clouds And Water (Vapor)

Climate models are NOT capable of modeling clouds. Their resolution is too low and clouds are too complex.

Ocean Atmosphere Response to Solar EMR at Top of the Atmosphere

How can climate models hope to reflect the real world when clouds are parameterised with no sensitivity to surface temperature?

The Big 5 Natural Causes of Global Warming part 5: How Clouds Moderate Global Warming

Any global reduction of cloud cover increases global warming. And reduction of local clouds can cause heat waves.

Clouds Haven’t Behaved the Way the IPCC Or the Models Say

My paper argues that clouds behaved largely independently of CO2 and had as much of a warming effect as CO2, maybe much more.

Where have all the Clouds gone and why care?

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. …

Radiative energy flux variations from 2000 – 2020

The time span of 20 years is still too short to be able to decide conclusively whether the current heating phase is a temporary or permanent development. In the former…

A Robust Balance

Guest Post by Willis Eschenbach Albedo is the percentage of incident light that is reflected by an object. For years, I’ve read claims that the loss of Arctic sea ice…

How do higher waves cause more ice clouds? Researchers claim expedition into arctic sea explains

Scientists explain the peculiar interplay that exists between sea-ice decline, wave height, and ice cloud formation over the Arctic

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…

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…

A pertinent climate question

How much of a change in cloudiness would it take to account for the 0.53 W/m2 increase in TOA radiative forcing since 2003?

Aerosol formation in clouds

“Our experimental setup allows us for the first time to precisely investigate the distribution of organic vapours at the air-water interface under near-environmental conditions,” says Houssni Lamkaddam, a researcher in…

Study: Global Warming Heating Nights Faster than Days

And both increased and decreased cloud cover is bad.

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…

Noctilucent Clouds Over London

On June 21st, something rare and magical happened in London. The skies of the great city filled with noctilucent clouds (NLCs). Phil Halper noticed the display, grabbed a camera, and…

Record Cold Upper Mesospheric Temperatures Suggest Another Good Noctilucent Cloud Viewing Season

From Dr Roy Spencer’s Blog May 31st, 2020 by Roy W. Spencer, Ph. D. Noctilucent clouds (NLCs) are often visible in the extreme upper atmosphere (80-85 km altitude) well after…

Ships’ emissions create measurable regional change in clouds

A container ship leaves a trail of white clouds in its wake that can linger in the air for hours. This puffy line is not just exhaust from the engine,…

First-time direct proof of chemical reactions in particulates

Paul Scherrer Institute Researchers at the Paul Scherrer Institute PSI have developed a new method to analyse particulate matter more precisely than ever before. With its help, they disproved an…

One Upside of More CO2: Beautiful Upper Atmospheric Clouds

Reposted from Dr. Roy Spencer’s Blog January 1st, 2020 by Roy W. Spencer, Ph. D. Polar Stratospheric Cloud display (smartphone photo posted by Reddit user Breuuan on Dec. 31, 2019.)…

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