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 , , , | 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 , , , , | 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 , , , | 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

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Posted in Climate change, Climate sensitivity, ClimateBall, Gavin Schmidt, Policy, Research, Uncategorized | Tagged , , , , | 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

Posted in Climate change, Climate sensitivity, Global warming, Greenhouse effect | Tagged , , , , , | 34 Comments

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

Posted in Climate change, Climate sensitivity, Global warming, Research | Tagged , , , , , | 36 Comments

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

Posted in Climate change, Climate sensitivity, Global warming, Policy, The philosophy of science | Tagged , , , , | 175 Comments

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 , , , | 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

Posted in advocacy, Climate change, Climate sensitivity, Scientists | Tagged , , , , | 85 Comments

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 , , , , , | 7 Comments