Tag Archives: Climate models

Climate model tuning

I wrote a post about model tuning that discussed a paper that argued for more transparency in how climate models are tuned. Gavin Schmidt, and colleagues, have now published a paper that discusses the Practice and philosophy of climate model … Continue reading

Posted in Climate sensitivity, Gavin Schmidt, Research, Science, The scientific method | Tagged , , , , , , | 62 Comments

Reconciling climate sensitivity estimates – part III, or IV?

I mentioned in a recent post that there was a new paper that claims to reconciles climate sensitivity estimates. The basic issue is that observationally-based climate sensitivity estimates have a range of about 1.5oC to about 3oC, while climate model … Continue reading

Posted in Climate change, Climate sensitivity, Research, Science, The philosophy of science | Tagged , , , , , | 94 Comments

A reduced climate sensitivity!

Now that I have your attention, I should probably make clear that this post is not about the Earth. I’m just back from a meeting where one of the speakers was Ian Boutle, lead author of a paper in which … Continue reading

Posted in Climate sensitivity, Research, Science, The scientific method | Tagged , , , , , | 14 Comments

Catastrophe, hoax, or just “Lukewarm”?

I thought I would post this video of a talk given by Tim Palmer. The basic message is that climate change is neither a hoax, going to be catastrophic, or going to be benign (Lukewarm). What climate science can (and … Continue reading

Posted in Climate change, Climate sensitivity, Global warming, IPCC, Research, Science | Tagged , , , , , , , , | 120 Comments

Judith Curry confuses laypeople about climate models

Judith Curry has written a report for the Global Warming Policy Foundation called Climate Models for the layman. As you can imagine, the key conclusions is that climate models are not fit for the purpose of justifying political policies to … Continue reading

Posted in Climate sensitivity, ClimateBall, Judith Curry, Science, The scientific method | Tagged , , , , , | 108 Comments

Negative emissions

I went to some Departmental talks recently and discovered that some of my colleagues are researchering possible carbon sequestration technologies. This could be very important, but appealing to negative emission technologies is often quite strongly criticised. The basic argument (which … Continue reading

Posted in Climate change, Global warming, Research, Science | Tagged , , , , , , | 34 Comments

Engineering the software for understanding climate change

Since Judith Curry has a guest post about global climate models and the laws of physics, I thought it would be worth posting this recently released video of a talk about climate modelling (see below). It’s by Steve Easterbrook, who … Continue reading

Posted in ClimateBall, Global warming, Judith Curry, Research, Science | Tagged , , , , , , | 49 Comments

Model tuning

Came across a very interesting paper on the art and science of climate model tuning. Based on the comments here, it appears that some are interpreting this as confirming their claims that climate models are tuned to give preferred results. … Continue reading

Posted in Climate change, Climate sensitivity, Global warming, Judith Curry, Science | Tagged , , , , , | 264 Comments

Full-depth OHC

Since my holiday is now over, I thought I might briefly comment on a recent paper by Cheng et al., called Observed and simulated full-depth ocean heat-content changes for 1970–2005. John Abraham, one of the authors, has already discussed it … Continue reading

Posted in Climate change, Climate sensitivity, Global warming, Research, Science | Tagged , , , , , , , , | 39 Comments

Models versus satellites

A graph that is fairly commonly promoted to – apparently – illustrate that models and observations have diverged, is one produced by John Christy which compares models to satellite/balloon data for the troposphere. Ignoring all the potential issues with this … Continue reading

Posted in Climate change, Climate sensitivity, ClimateBall, Gavin Schmidt, Global warming, Science | Tagged , , , , , , , | 27 Comments