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Climate Science from Climate Scientists since 2004
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RealClimate: The Climate Science reference they don’t want Judges to read www.realclimate.org/index.php/ar...
RealClimate: The Climate Science reference they don’t want Judges to read
RealClimate: For the first time, the Federal Judicial Center (FJC) commissioned a chapter on climate science for the manual they put out (with the NASEM) for judges, the Reference on Scientific Eviden...
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February 9, 2026 at 10:17 PM
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RealClimate: Koonin’s Continuing Calumnies www.realclimate.org/index.php/ar...
RealClimate: Koonin’s Continuing Calumnies
RealClimate: At a public event debating the DOE CWG report, Steve Koonin embarrasses himself further. This week there was a bit of a peculiar event at the Civitas Institute at Texas A&M, with three of...
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February 7, 2026 at 6:48 PM
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RealClimate: 2025 Updates www.realclimate.org/index.php/ar...
RealClimate: 2025 Updates
RealClimate: Our various graphics and model-observation comparisons have been updated with 2025 data. There are a few version updates that make some difference (particularly in sea ice extent), but th...
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January 28, 2026 at 2:37 AM
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RealClimate: A peek behind the curtain… www.realclimate.org/index.php/ar...
RealClimate: A peek behind the curtain…
RealClimate: New email releases from the EDF/UCS lawsuit against the DOE provide a rarely-seen behind the curtain look at how the climate contrarians work. The new releases of non-governmental emails ...
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January 23, 2026 at 5:26 PM
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RealClimate: AI/ML climate magic? www.realclimate.org/index.php/ar...
RealClimate: AI/ML climate magic?
RealClimate: There has been a frenzy around artificial intelligence and deep machine learning (AI/ML) since the “ChatGPT Moment” in 2022, and AI/ML is for sure going to affect us all. It strikes me th...
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January 5, 2026 at 11:19 PM
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RealClimate: 1.5ºC and all that www.realclimate.org/index.php/ar...
RealClimate: 1.5ºC and all that
RealClimate: The Paris Agreement temperature limits are a little ambiguous and knowing where we are is tricky. The desire to keep global temperature rises since the pre-industrial, ideally below 1.5ºC...
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December 29, 2025 at 1:39 AM
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RealClimate: Who should pay? www.realclimate.org/index.php/ar...
RealClimate: Who should pay?
RealClimate: Climate risk scores on real estate listings are having an impact on prices and realtors are complaining. But who should pay for these losses? If you have been browsing Zillow or Redfin in...
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December 1, 2025 at 2:00 PM
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RealClimate: Time and Tide Gauges wait for no Voortman www.realclimate.org/index.php/ar...
RealClimate: Time and Tide Gauges wait for no Voortman
RealClimate: 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 merc...
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September 18, 2025 at 12:29 PM
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RealClimate: Lil’ NAS Express www.realclimate.org/index.php/ar...
RealClimate: Lil’ NAS Express
RealClimate: The fast-tracked update of the 2009 EPA Endangerment finding from the National Academies for Science, Engineering and Mathematics (NASEM), has now been released. Unsurprisingly, it has co...
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September 18, 2025 at 12:28 PM
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RealClimate: DOE CWG Report “Moot”? www.realclimate.org/index.php/ar...
RealClimate: DOE CWG Report “Moot”?
RealClimate: 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 ...
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September 11, 2025 at 3:44 PM
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RealClimate: Critique of Chapter 6 “Extreme Weather” in the DOE review www.realclimate.org/index.php/ar...
RealClimate: Critique of Chapter 6 “Extreme Weather” in the DOE review
RealClimate: 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 suc...
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September 2, 2025 at 9:24 PM
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RealClimate: Climate Scientists response to DOE report www.realclimate.org/index.php/ar...
RealClimate: Climate Scientists response to DOE report
RealClimate: 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. The comments are available ...
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September 2, 2025 at 9:23 PM
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RealClimate: Critiques of the ‘Critical Review’ www.realclimate.org/index.php/ar...
RealClimate: Critiques of the ‘Critical Review’
RealClimate: The first somewhat comprehensive reviews of the DOE critical review are now coming online. First out of the gate is a nice interactive from CarbonBrief based on direct input from scientis...
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August 14, 2025 at 11:05 PM
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RealClimate: Are direct water vapor emissions endangering anyone? www.realclimate.org/index.php/ar...
RealClimate: Are direct water vapor emissions endangering anyone?
RealClimate: 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...
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July 31, 2025 at 2:44 PM
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RealClimate: The Endangerment of the Endangerment Finding? www.realclimate.org/index.php/ar...
RealClimate: The Endangerment of the Endangerment Finding?
RealClimate: The EPA, along with the "Climate Working Group" (CWG) of usual suspects (plus Judith Curry and Ross McKitrick) at DOE, have just put out a document for public comment their attempt to res...
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July 31, 2025 at 2:43 PM
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RealClimate: Ocean circulation going South? www.realclimate.org/index.php/ar...
RealClimate: Ocean circulation going South?
RealClimate: Some intriguing new measurements of salinity in the oceans around Antarctica have set off reams of sensationalist speculations. Maybe some context is helpful... What we've been seeing The...
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July 13, 2025 at 6:38 PM
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RealClimate: Melange à Trois www.realclimate.org/index.php/ar...
RealClimate: Melange à Trois
RealClimate: 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...
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July 9, 2025 at 12:18 AM
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RealClimate: Predicted Arctic sea ice trends over time www.realclimate.org/index.php/ar...
RealClimate: Predicted Arctic sea ice trends over time
RealClimate: Over multiple generations of CMIP models Arctic sea ice trend predictions have gone from much too stable to about right. Why? The diagnostics highlighted in our model-observations compari...
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May 31, 2025 at 11:12 PM
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RealClimate: The most recent climate status www.realclimate.org/index.php/ar...
RealClimate: The most recent climate status
RealClimate: The Arctic Council’s Arctic Monitoring and assessment Programme (AMAP) recently released a Summary for PolicyMakers’ Arctic Climate Change Update 2024. It is one of several stock taking e...
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May 31, 2025 at 11:11 PM
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RealClimate: WMO: Update on 2023/4 Anomalies www.realclimate.org/index.php/ar...
RealClimate: WMO: Update on 2023/4 Anomalies
RealClimate: 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 temperatur...
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May 31, 2025 at 11:11 PM
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RealClimate: Andean glaciers have shrunk more than ever before in the entire Holocene www.realclimate.org/index.php/ar...
RealClimate: Andean glaciers have shrunk more than ever before in the entire Holocene
RealClimate: 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 a...
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March 20, 2025 at 12:03 AM
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RealClimate: Climate change in Africa www.realclimate.org/index.php/ar...
RealClimate: Climate change in Africa
RealClimate: [latexpage] While there have been some recent set-backs within science and climate research and disturbing news about NOAA, there is also continuing efforts on responding to climate chang...
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March 20, 2025 at 12:02 AM
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RealClimate: We need NOAA now more than ever www.realclimate.org/index.php/ar...
RealClimate: We need NOAA now more than ever
RealClimate: Guest commentary by Robert Hart, Kerry Emanuel, & Lance Bosart The National Weather Service (NWS) and its parent agency, the National Oceanic and AtmosphericAdministration (NOAA), deliver...
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March 13, 2025 at 11:39 AM
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RealClimate: How will media report on this new AMOC study? www.realclimate.org/index.php/ar...
RealClimate: How will media report on this new AMOC study?
RealClimate: I’ve been getting a lot of media queries about a new paper on the AMOC (Atlantic Meridional Overturning Circulation), which has just been published. In my view this large media interest i...
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February 27, 2025 at 2:42 AM
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Unforced Variations: Feb 2025 www.realclimate.org/index.php/ar...
Unforced Variations: Feb 2025
This month's open thread on climate-related topics.
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February 4, 2025 at 1:40 AM