The EPA, along with the "Climate Working Group" of usual suspects (plus Judith Curry and Ross McKitrick) at DOE, have just put out a document for public comment their attempt to rescind the 2009 Endangerment Finding for greenhouse gas emissions. … Read Full Article about The Endangerment of the Endangerment Finding?
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Ocean circulation going South?
Some intriguing new measurements of salinity in the oceans around Antarctica have set off reams of sensationalist speculations. Maybe some context is helpful... … Read Full Article about Ocean circulation going South?
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National Climate Assessment links
For some reason, it has become hard to locate the various National Climate Assessments (NCAs) that have been produced by the USGCRP over the decades (and it's pretty hard to find the USGRCP as well...). However, the reports are still accessible if you know where to look. So for future reference, … Read Full Article about National Climate Assessment links
Melange à Trois
In honor of the revelation today, that Koonin, Christy and Spencer have been made Special Government Employees at the Dept. of Energy, we present a quick round up of our commentary on the caliber of their arguments we've posted here over the last decade or so. TL;DR? The arguments are not very … Read Full Article about Melange à Trois
Unforced variations: July 2025
This month's open thread. Try to stick to climate topics. … Read Full Article about Unforced variations: July 2025
Unforced variations: Jun 2025
This month's open thread. Please stay on climate topics and try to be constructive. … Read Full Article about Unforced variations: Jun 2025
Predicted Arctic sea ice trends over time
Over multiple generations of CMIP models Arctic sea ice trend predictions have gone from much too stable to about right. Why? … Read Full Article about Predicted Arctic sea ice trends over time
The most recent climate status
The Arctic Council’s Arctic Monitoring and assessment Programme (AMAP) recently released a Summary for PolicyMakers’ Arctic Climate Change Update 2024. … Read Full Article about The most recent climate status
Unforced variations: May 2025
This month's open thread. Note that the Nenana Ice challenge break up date graph has been updated, and the Yukon river ice break up is imminent (or may have already happened! [Update - it already had]). Please stay focused on climate issues. … Read Full Article about Unforced variations: May 2025
Unforced Variations: Apr 2025
This month's open thread for climate topics. Please try to stay focused on climate instead of generic (and tedious) political sniping. … Read Full Article about Unforced Variations: Apr 2025
WMO: Update on 2023/4 Anomalies
The WMO released its (now) annual state of the climate report this week. As well as the (now) standard set of graphs related to increasing greenhouse gas concentrations, rising temperatures, reducing glacier mass, etc., Zeke Hausfather and I wrote up a short synthesis on the contributions to recent … Read Full Article about WMO: Update on 2023/4 Anomalies
Andean glaciers have shrunk more than ever before in the entire Holocene
Glaciers are important indicators of climate change. A recent study published in the leading journal Science shows that glaciers in the tropical Andes have now retreated further than at any other time in the entire Holocene - which covers the whole history of human civilisation since the invention … Read Full Article about Andean glaciers have shrunk more than ever before in the entire Holocene