The #AMOC is the reason for Europe’s mild climate. Evidence that it is slowing has been piling up over the years – it now is likely at its weakest in at least a millennium, and it may even be approaching a tipping point. Here I will show you the latest high-resolution images – and also discuss whether there is serious evidence speaking against an ongoing AMOC weakening. Our regular readers are … Read Full Article about High-resolution ‘fingerprint’ images reveal a weakening Atlantic Ocean circulation (AMOC)

Almost two decades ago, some scientists predicted that Arctic summer sea ice would 'soon' disappear. These predictions were mentioned by Al Gore and got a lot of press. However, they did not gain wide acceptance in the scientific community, and were swiftly disproven. Unsurprisingly, this still comes up a lot. Time for a deeper dive into what happened and why... … Read Full Article about “But you said the ice was going to disappear in 10 years!”

This month's open thread. Lots of salient stuff this month so please try and stay focused and constructive! … Read Full Article about Unforced variations: Oct 2025

Here we go again. An obscure, methodologically poor, paper published with little to no review makes a convenient point and gets elevated into supposedly 'blockbusting' science by the merchants of bullshit, sorry, doubt. Actual scientists drop everything to respond, but not before the (convenient) … Read Full Article about Time and Tide Gauges wait for no Voortman

The fast-tracked update of the 2009 EPA Endangerment finding from the National Academies for Science, Engineering and Medicine (NASEM), has now been released. … Read Full Article about Lil’ NAS Express

Somewhat breaking news. A court filing (from 9/4) from DOE has noted that the Climate Working Group has been disbanded (as of 9/3). This was done to make the EDF/UCS lawsuit moot, but it also means that DOE is withdrawing the report, no-one will respond appropriately to the comments submitted, and … Read Full Article about DOE CWG Report “Moot”?

As we've mentioned, Andrew Dessler and Robert Kopp have been coordinating a scientific peer review of the DOW 'CWG' Critique of Climate Science. It is now out. … Read Full Article about Climate Scientists response to DOE report

Guest commentary by Kerry Emanuel Executive Summary Chapter 6 of the draft DOE report examines whether global warming exacerbates extreme weather. It rightly notes that because events such as hurricanes are rare, detecting their response to climate change in short and imperfect historical … Read Full Article about Critique of Chapter 6 "Extreme Weather" in the DOE review

This month's open thread. As usual try to remain substantive and avoid insults and personal attacks on other commenters. Any sock-puppetry or abusive comments will just be deleted on sight. Also, please don't outsource your comments to ChatGPT - cut-and-pastes of long-winded LLM output are tedious … Read Full Article about Unforced Variations: Sep 2025

The first somewhat comprehensive reviews of the DOE critical review are now coming online. … Read Full Article about Critiques of the ‘Critical Review’

This month's open thread. Please try and stay focused on substance rather than personalities. There are many real issues that are particularly salient this month, and so maybe we can collectively try not to have the comments descend into tedium. Note: Moderation will be applied to over-frequent … Read Full Article about Unforced Variations: Aug 2025

In the EPA EF reconsideration document there is a section on p62 where they attempt to make the argument that the CO2 endangerment finding would also apply to direct water vapor emissions to the atmosphere, which is (according to them) obviously absurd. But both claims are bogus. … Read Full Article about Are direct water vapor emissions endangering anyone?