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Category Archives: Climate sensitivity
Some more about Hansen et al.
I thought I would expand a bit on my previous post about the recent Hansen et al. paper. Something I did like is that the paper highlighted that there is no known paleoclimate analogues for the current anthropogenic forcing pathway. … Continue reading
Posted in Climate change, Climate sensitivity, Global warming, Research
Tagged ECS, James Hansen, Warming committment, Warming in the pipeline
15 Comments
Hansen’s 10C
A recent comment asked about James Hansen’s recent paper in which it is claimed that equilibrium global warming for today’s GHG level is 10°C. I’ve finally had a chance to look at it and I think I understand what is … Continue reading
Posted in Climate sensitivity, Research, Scientists
Tagged ECS, Equilibrium warming, ESS, GHG forcing, James Hansen
70 Comments
Approximate net zero
Since I have a few free moments, I thought I would briefly highlight a paper by Jenkins et al. on [t]he Multi-Decadal Response to Net Zero CO2 Emissions and Implications for Emissions Policy. Recent IPCC reports have highlighted that limiting … Continue reading
Posted in Climate sensitivity, Policy, Research
Tagged Glen Peters, IPCC, Stuart Jenkins, Zere emission commitment
41 Comments
Considering Catastrophe
There’s been quite a lot of recent coverage of a paper suggesting that climate endgames, such as global societal collapse or human extinction, have been dangerously unexplored. For those who recall the contentious RCP8.5 debate, this may seem a surprising … Continue reading
Posted in Climate change, Climate sensitivity, ClimateBall, Gavin Schmidt, Policy, Research, Uncategorized
Tagged Climate endgames, Luke Kemp, RCP8.5, Tim Lenton, worst-case scenarios
92 Comments
No, it probably isn’t mostly due to changes in clouds!
I haven’t done a paper debunk for a while, but a reader got in touch to ask about a recent paper by Hans Rolf-Dübal and Fritz Vahrenholt, so I thought I would have a quick look. The paper is Radiative … Continue reading
The effect of permafrost on the ZEC
I’ve written a number of posts about warming commitments, in particular the zero emission commitment (ZEC). In other words, how much additional warming will there be after emissions get to zero. The answer is that on multi-decadal timescales [the ZEC] … Continue reading
A chat with Mallen Baker
Mallen Baker is a commentator who runs a youtube channel called Dangerously Reasonable. He tackles contentious issues and tries to assess the various lines of evidence that may, or may not, support what someone is promoting. For example, Mallen did … Continue reading
IPCC AR6 WG1
The site has been a little quiet, but since this blog has been going long enough to have commented on the release of the IPCC AR5 WG1 report, it only seems right to comment on the release of the IPCC’s … Continue reading
Posted in Climate change, Climate sensitivity, Global warming, IPCC
Tagged AR6, RealClimate, Unprecedented, WG1
85 Comments
Speaking out
Bill McGuire, who is Professor Emeritus of Geophysical & Climate Hazards at UCL, has written a post suggesting that climate scientists should speak out more and that they should Come down off the fence and choose the path you know, … Continue reading
The Last Glacial Maximum
There’s an interesting paper by Seltzer et al. called [w]idespread six degrees Celsius cooling on land during the Last Glacial Maximum, which I became aware of through a Twitter thread by Werner Aeschbach. The reason it’s interesting is that it … Continue reading
Posted in Climate change, Climate sensitivity, Global warming, Research
Tagged Alan Seltzer, ECS, Equilibrium Climate Sensitivity, LGM, nature, Werner Aeschbach
7 Comments