Category Archives: Climate change

Narrowing the climate sensitivity range?

There have been a couple of recent papers presenting analyses that claim to have narrowed the likely range for equilibrium climate sensitivity (ECS). One is Dessler et al. (currently a discussion paper under review) which suggests that the 500hPa tropical … Continue reading

Posted in Climate change, Climate sensitivity, Policy, Research, Science | Tagged , , , , | 75 Comments

Guest post: A ‘new’ measurement of climate sensitivity?

This is a guest post by Mark Richardson, who is currently a Caltech Postdoctoral Scholar at the NASA Jet Propulsion Laboratory. Mark has a particular interest in the role of clouds in climate change. This post is a response to … Continue reading

Posted in Climate change, Climate sensitivity, Global warming, The scientific method | Tagged , , , | 148 Comments

No, we’re not slipping into a proper ice age

Matt Ridley, who I have written about numerous times before, has a new article in The Times called global cooling is not worth shivering about, which claims that The Earth is very slowly slipping back into a proper ice age … Continue reading

Posted in Climate change, ClimateBall, GRRRROWTH, Policy | Tagged , , , , , , | 67 Comments

Being wicked

There’s been an interesting discussion on Twitter about how to frame anthropogenically-driven climate change. In particular, should it be framed as a wicked problem? A number of people involved in the discussion had a problem with this framing. One very … Continue reading

Posted in advocacy, Climate change, economics, Policy, Politics | Tagged , , , | 65 Comments

2017: A year in review

I’ve now been writing this blog for almost 5 years and I still don’t quite know what I’m trying to achieve, if anything. Hopefully a blog that presents a reasonable representation of our current understanding of climate science, while also … Continue reading

Posted in Climate change, ClimateBall, Global warming, Greenhouse effect, Personal, physicists, Pseudoscience, Roger Pielke Jr | Tagged , , , , , , , , , , | 30 Comments

Galactic cosmic rays

There’s a recent Nature Communications paper by Svensmark et al. called [i]ncreased ionization supports growth of aerosols into cloud condensation nuclei. The basic idea is that cosmic rays (energetic particles typically accelerated by shock waves) can influence the growth of … Continue reading

Posted in Climate change, Climate sensitivity, ClimateBall, Global warming, Science, Sound Science (tm) | Tagged , , , , , , , | 10 Comments

Arguing about the greenhouse effect – again

There’s been a rather lengthy Twitter thread about the greenhouse effect. In particular, focusing on claims that there is no such thing. Of course, engaging in such discussions so as to actually change anyone’s minds is pointless. However, I think … Continue reading

Posted in Climate change, ClimateBall, Greenhouse effect, Science | Tagged , , , | 76 Comments