This month’s open thread. El Niño continues to build, annual mean temperatures are starting to become clear, sea ice is doing it’s thing, and NYC Climate Week has come and gone. Surely some fodder for constructive dialogue….? Please be respectful and concise.
Unforced Variations: Sep 2026
Koonin’s Temperature of the LOL Stratosphere
A new paper undermines totally inaccurate claims in the DOE report.
[Read more…] about Koonin’s Temperature of the LOL StratosphereUnforced Variations: Aug 2026

This month’s open thread on climate topics. The annual ranking horse race is in full swing, discussions of extreme weather abound, Arctic sea ice is reaching it’s annual minimum, and the future of evidence-based policy making seems dim. Oh well.
Unforced Variations: July 2026
Unforced Variations: June 2026
Unforced Variations: May 2026
This month’s open thread on climate topics. El Niño coming (shades of 2023), competitive predictions, ill-advised geo-engineering ideas, and massive shifts in renewable energy roll out. Surely something there to discuss…
Unforced Variations: Apr 2026
How robust is our accelerometer?
Guest commentary from Nathan Lenssen (Colorado School of Mines)
A new analysis of historical temperatures suggests that things are getting warmer faster, but what does it mean for the future?
[Read more…] about How robust is our accelerometer?