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Climate Science from Climate Scientists since 2004
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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
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RealClimate: Comparison Update 2024 www.realclimate.org/index.php/ar...
Comparison Update 2024
One more dot on the graphs for our annual model-observations comparisons updates. Given how extraordinary the last two years have been, there are a few highlights to note. First, we have updated...
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January 28, 2025 at 12:07 AM
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RealClimate: The AMOC is slowing, it’s stable, it’s slowing, no, yes, …

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The AMOC is slowing, it’s stable, it’s slowing, no, yes, …
There's been a bit of media whiplash on the issue of AMOC slowing lately - ranging from the AMOC being on the brink of collapse to it being more stable than previously thought. AMOC, of course, refers...
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January 26, 2025 at 9:48 PM
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RealClimate: 2024 Hindsight www.realclimate.org/index.php/ar...
2024 Hindsight
To no-one's surprise 2024 was the warmest year on record - and by quite a clear margin. Another year, another data point. Unlike the previous year, 2024 was anticipated to be a record breaker...
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January 11, 2025 at 5:59 PM
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RealClimate: Nature 2023: Part II www.realclimate.org/index.php/ar...
Nature 2023: Part II
This is a follow-on post to the
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December 7, 2024 at 11:45 PM
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RealClimate: Twenty years of blogging in hindsight

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Twenty years of blogging in hindsight
It’s 20 years since we started blogging on climate here on RealClimate (December 10, 2004). We wanted to counter disinformation about climate change that was spreading through various campaigns. In th...
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November 30, 2024 at 4:07 PM
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RealClimate: Operationalizing Climate Science

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Operationalizing Climate Science
There is a need to make climate science more agile and more responsive, and that means moving (some of it) from research to operations.
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November 17, 2024 at 11:15 PM
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RealClimate: Science is not value free www.realclimate.org/index.php/ar...
October 21, 2024 at 12:17 AM