Category Archives: Global warming

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 , , , , , | 33 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

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

The Last Glacial Maximum

Posted on May 16, 2021 by ...and Then There's Physics

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

Halting the vast release of methane is critical

Posted on May 1, 2021 by ...and Then There's Physics

A week or so ago there was a New York Times article called Halting the Vast Release of Methane Is Critical for Climate, U.N. Says. As the title suggests, it was reporting on a United Nations Report that (according to … Continue reading →

Posted in Climate change, Environmental change, Global warming, Policy, Science | Tagged , , , , , | 94 Comments

Plausible emission scenarios

Posted on April 12, 2021 by ...and Then There's Physics

A paper by Roger Pielke Jr, Matthew Burgess and Justin Ritchie has been submitted that suggests that the most plausible 2005-2040 emission scenarios project less than 2.5oC of warming by 2100. It’s generated a bit of debate on social media, … Continue reading →

Posted in ClimateBall, Global warming, Policy, Roger Pielke Jr | Tagged , , , , , | 67 Comments

Warming commitments

Posted on January 8, 2021 by ...and Then There's Physics

There’s been quite a lot of recent discussion about warming commitments. It started with an article by Bob Berwyn called Net Zero Emissions Would Stabilize Climate Quickly Says UK Scientist, followed soon after by one saying [w]arming already baked in … Continue reading →

Posted in Climate change, Climate sensitivity, Global warming, Research | Tagged , , , , , , | 42 Comments

Have CO2 emissions peaked?

Posted on January 2, 2021 by ...and Then There's Physics

I noticed, as has Stoat, that Ken Caldeira and Ted Nordhaus have a bet about whether or not we’ve reached peak CO2 emissions. Specifically, the bet is Between 2021 and the end of 2030, annual fossil fuel emissions (excluding carbonation) … Continue reading →

Posted in Climate change, ethics, Global warming, Philosophy for Bloggers | Tagged , , , , | 92 Comments