After more than 15 years with basically the same layout, the Realclimate website - while still functional - has become increasing anachronistic both in appearance and 'under the hood'. In order to take advantage of more up to date web-site designs and new features that have been developed since the early 2000s (!), we need to upgrade the site, and while we are at it, update the theme and design, … Read Full Article about Realclimate redesign
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Unforced Variations: Aug 2021
This month is IPCC month - the Sixth Assessment Report from Working Group 1 is out on Monday August 9. We'll have some detailed comments once it's out, but in the meantime, feel free to speculate widely (always considering that IPCC is restricted to assessing existing literature...). Open thread - please stick to climate science topics. … Read Full Article about Unforced Variations: Aug 2021
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Climate adaptation should be based on robust regional climate information
Climate adaptation steams forward with an accelerated speed that can be seen through the Climate Adaptation Summit in January (see previous post), the ECCA 2021 in May/June, and the upcoming COP26. Recent extreme events may spur this development even further (see previous post about attribution of … Read Full Article about Climate adaptation should be based on robust regional climate information

Rapid attribution of PNW heatwave
Summary: It was almost impossible for the temperatures seen recently in the Pacific North West heatwave to have occurred without global warming. And only improbable with it. It's been clear for at least a decade that global warming has been in general increasing the intensity of heat waves, with … Read Full Article about Rapid attribution of PNW heatwave
Forced Responses: July 2021
A new bi-monthly open thread for climate solutions discussions. Climate science threads go here. … Read Full Article about Forced Responses: July 2021
Unforced Variations: July 2021
This month's open thread for climate science. Probably a good time to discuss attribution for extreme heat, wildfires, hurricane intensity and intense precipitation. … Read Full Article about Unforced Variations: July 2021
Unforced Variations: Jun 2021
By group
This month's open thread for climate science. Start of the meteorological summer, official hurricane season (outlook), the final stretches of the IPCC AR6 review process and a rare conjunction of Father's Day and the summer solstice. Please stay on topic. … Read Full Article about Unforced Variations: Jun 2021

Why is future sea level rise still so uncertain?
By Gavin
Three new papers in the last couple of weeks have each made separate claims about whether sea level rise from the loss of ice in West Antarctica is more or less than you might have thought last month and with more or less certainty. Each of these papers make good points, but anyone looking for … Read Full Article about Why is future sea level rise still so uncertain?
Forced Responses: May 2021
By group
A bimonthly open thread on climate solutions. Perhaps unsurprisingly this is always the most contentious comment thread on the site, but please try and be constructive and avoid going off on wild tangents. … Read Full Article about Forced Responses: May 2021
Unforced Variations: May 2021
By group
This month's open thread for climate science topics. … Read Full Article about Unforced Variations: May 2021

Nenana Ice Classic 2021
By Gavin
And.... it's that time again. The clock stopped on the Nenana ice classic this afternoon (April 30, 12:50pm AT). This is pretty much on trend and unsurprising given the relatively slightly cool winter in Alaska. The jackpot on offer this year was $233,591 but will likely be shared among several … Read Full Article about Nenana Ice Classic 2021

Two graphs show the path to 1.5 degrees
By Stefan
In the Paris Agreement, just about all of the world's nations pledged to “pursue efforts to limit the temperature increase to 1.5 degrees Celsius above pre-industrial levels”. On Saturday, the top climate diplomats from the U.S. and China, John Kerry and Xie Zhenhua, reiterated in a joint statement … Read Full Article about Two graphs show the path to 1.5 degrees
