Tag Archives: Climate sensitivity

RCP8.5

Posted on May 10, 2018 by

There’s been a lengthy discussion on Twitter about RCP8.5. I think it was initiated by Roger Pielke Jr, who continues in his campaign to police the scientific community: RCP 8.5 is by far the favorite in climate impact studies (graph).I … Continue reading →

Posted in Climate change, Climate sensitivity, ClimateBall, Policy, Research, Scientists | Tagged , , , , | 271 Comments

Lewis and Curry, again

Posted on April 27, 2018 by

I should probably say something about the new Lewis & Curry paper. It’s mostly an update to their earlier paper that I’ve discussed before. Bottom line; there are reasons to be cautious. The basic formalism is that one can use … Continue reading →

Posted in Climate sensitivity, Judith Curry, Research, Science, The scientific method | Tagged , , , , , , , , | 686 Comments

Galactic cosmic rays

Posted on December 22, 2017 by

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

What if global warming ends up being greater than we thought?

Posted on December 17, 2017 by

I recently wrote a post about the Brown & Caldeira paper which suggests that climate sensitivity may be on the high side of the range. Rather predictably, Nic Lewis has a guest post on Climate Etc in which he looks … Continue reading →

Posted in Climate change, Climate sensitivity, ClimateBall, Global warming, GRRRROWTH, Science | Tagged , , , , , , | 71 Comments

Combining different ECS estimates

Posted on November 25, 2017 by

I wanted to briefly highlight a new paper by Nic Lewis and Peter Grünwald called [o]bjectively combining AR5 instrumental period and paleoclimate climate sensitivity evidence. You may want, however, to be cautious of the term objective. As the title indicates, … Continue reading →

Posted in Climate change, Climate sensitivity, Research, Science | Tagged , , , , , , | 133 Comments

Infrared absorption of atmospheric carbon dioxide

Posted on October 21, 2017 by

Geoff Price made me aware of a paper, by an apparently highly published physicist, that considers the infrared absorption of atmospheric carbon. It concludes that CO2 is a very weak greenhouse gas and cannot be accepted as the main driver … Continue reading →

Posted in Climate sensitivity, physicists, Pseudoscience, Research, The scientific method | Tagged , , , , , , | 40 Comments

A bit more about clouds

Posted on October 7, 2017 by

A few years ago I posted a video by Andrew Dessler that was discussing whether or not Equilibrium Climate Sensitivity could be less than 3oC. The bottom line was that the best estimate for ECS is about 3oC. Given that … Continue reading →

Posted in Climate sensitivity, ClimateBall, Global warming, Research, Science, The scientific method | Tagged , , , , , , , , | 34 Comments