Category Archives: Research

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

Some nostalgia

I haven’t had much time to write posts, nor really had much to write about. I have, however, started looking through some of the photographs I took when working for the South African National Antarctic Programme as a physicist in … Continue reading

Posted in Personal, Research | Tagged , , , | 15 Comments

The role of mathematical modelling

Christina Pagel and Kit Yates have an article in the British Medical Journal (BMJ) on the Role of mathematical modelling in future pandemic response policy. It’s part of a series in the BMJ on the UK’s covid-19 inquiry. I have … Continue reading

Posted in Research, Scientists, The philosophy of science, The scientific method, Uncategorized | Tagged , , , , | 203 Comments

The importance of science communication

I’m just back from teaching at a summer school on the Dynamics of Exoplanetary and Solar System Bodies. It started in Inverness and then moved to Skye, which was a lovely place to visit. I gave a couple of lectures … Continue reading

Posted in Philosophy for Bloggers, Research, Scientists | Tagged , , , | 251 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

Revisiting causality using stochastics

The Proceedings of the Royal Society A has just published two papers by Koutsoyiannis et al. on revisiting causality using stochatics, the first being the theory paper and the second presenting some case studies. One of the case studies in … Continue reading

Posted in Greenhouse effect, Research, Science | Tagged , , | 41 Comments

The ‘hot model’ problem

Zeke Hausfather and colleagues recently wrote a Nature comment with suggestions about how to deal with what is called the ‘hot model’ problem. The issue is that some of the latest group of climate models have somewhat higher than expected … Continue reading

Posted in Climate change, Gavin Schmidt, Global warming, Research, The philosophy of science | Tagged , , , , | 208 Comments

World Atmospheric CO2

Early this year, a journal called Health Physics published a paper on World Atmospheric CO2, Its 14C Specific Activity, Non-fossil Component, Anthropogenic Fossil Component, and Emissions (1750–2018). The paper concluded that Our results show that the percentage of the total … Continue reading

Posted in Climate change, physicists, Research, The scientific method | Tagged , , , , , , | 106 Comments