Category Archives: Climate change

Science-based targets

Posted on October 6, 2021 by ...and Then There's Physics

It may just be my bubble, but I seem to be encountering quite a lot of criticism of things like deadlines, net zero and carbon budgets from people who – as far as I can tell – support aggressive climate … Continue reading →

Posted in Climate change, Global warming, Policy | Tagged | 66 Comments

The importance of reducing methane emissions

Posted on September 26, 2021 by ...and Then There's Physics

Since I’ve written quite a lot about methane, I thought I would promote Realclimate’s definitive CO2/CH4 comparison post. It highlights that the large relative rise in atmospheric methane concentrations means that methane has made a significant contribution to modern warming. … Continue reading →

Posted in Climate change, Gavin Schmidt | Tagged , , , , | 13 Comments

The effect of permafrost on the ZEC

Posted on September 15, 2021 by ...and Then There's Physics

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 , , , , , | 35 Comments

Implications for mitigating methane emissions in agriculture

Posted on August 31, 2021 by ...and Then There's Physics

Since I was discussing methane in yesterday’s post, I thought I would highlight a paper on [u]nderstanding the implications for mitigating methane emissions in agriculture (H/T Miles King). The reason I found it interesting, is that it uses GWP* (which … Continue reading →

Posted in Climate change, Environmental change, Policy | Tagged , , , , , | 47 Comments

A methane emergency?

Posted on August 30, 2021 by ...and Then There's Physics

There was an article a couple of days ago about why the climate emergency is now the methane emergency. I appreciate that the general argument is about limiting future warming, but some of what is suggested is essentially wrong. For … Continue reading →

Posted in Climate change, Global warming, Policy, Uncategorized | Tagged , , , , | 46 Comments

A chat with Mallen Baker

Posted on August 19, 2021 by ...and Then There's Physics

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 , , , , | 174 Comments

IPCC AR6 WG1

Posted on August 9, 2021 by ...and Then There's Physics

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

Posted on July 22, 2021 by ...and Then There's Physics

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 , , , , | 84 Comments

CO2 emission reductions

Posted on July 14, 2021 by ...and Then There's Physics

At the risk of sounding rather arrogant, I find myself getting more and more frustrated by people justifying their position on the basis of a flawed understanding of the scientific evidence. One that seems particularly prevalent at the moment is … Continue reading →

Posted in Climate change, Policy | Tagged , , , , | 60 Comments

Independent SAGE – Climate

Posted on June 20, 2021 by ...and Then There's Physics

Sir David King, who has been leading the Independent SAGE group, is planning to set up a similar group that will focus on climate change (H/T Doug McNeall). It will apparently have 14 experts, from 10 nations, and every continent. … Continue reading →

Posted in Climate change, Environmental change, Global warming, Policy, Uncategorized | Tagged , , , , , | 32 Comments