Tag Archives: James Hansen

You only need about 60 surface stations

Since surface temperature changes are correlated over distances of about 1000 km (it does depend somewhat on the latitude of the stations), it turns that you only need about 60 stations to produce a reasonable surface temperature dataset. [Edit: As … Continue reading

Posted in Climate change, Global warming, Science | Tagged , , , , , , , | 45 Comments

No, Hansen wasn’t wrong!

It’s 30 years since James Hansen testified before the US Congress about climate change. In the same year, he published a paper that produced some forecasts. I wasn’t going to write about this as there are a number of articles … Continue reading

Posted in Climate change, Climate sensitivity, ClimateBall, Policy | Tagged , , , , , , , , | 215 Comments

Not even giving physicists a bad name!

When I’m trying to have a bit of a dig at physicists (of which I’m one) who think they somehow know better than climate scientists, I’ll post the cartoon on the right. When I came across this interview with William … Continue reading

Posted in Climate sensitivity, ClimateBall, physicists, Science, Sound Science (tm), The scientific method | Tagged , , , , , , , | 70 Comments

The TCR-to-ECS ratio

Something I’ve been interested in is whether or not the ratio between the Transient Climate Response (TCR) and the Equilibrium Climate Sensitivity (ECS) best estimates from most of Nic Lewis’s work makes sense. Typically his TCR best estimate is around … Continue reading

Posted in Climate change, Climate sensitivity, ClimateBall, Global warming, Science | Tagged , , , , , , | 78 Comments

Reblog: On Hansen et al.

I haven’t really had a chance to properly read the new Hansen et al. paper (apart from the reviewers, who does?). However, it is clearly a paper that has already had impact and somewhat divided opinions, so I asked Peter … Continue reading

Posted in Climate change, ClimateBall, Global warming, Science | Tagged , , , , | 179 Comments

Extreme events

I had thought of writing about Hansen’s recent paper, but I’m not really sure what to say about it. I did read some of the reviews – Thorne, Archer, Ruddiman – and, unsurprisingly, there appear to be some valid criticisms. … Continue reading

Posted in Climate change, ClimateBall, Global warming, IPCC | Tagged , , , | 106 Comments

Over-reaction?

There was a fun press release from the University of Bristol about using a Global Circulation Model (GCM) to study the climate of Tolkien’s Middle Earth. A number of people on Twitter (Richard Betts, Gavin Schmidt, Doug MacNeall) seemed to … Continue reading

Posted in Climate change, Climate sensitivity, Comedy, Global warming | Tagged , , , , , , , | 41 Comments

And then there’s the energy imbalance

There are a few things I have been considering writing about, but since I’ve renamed the blog to be more explicitly physics orientated, I thought the first should at least reflect that change. There’s a recent paper by James Hansen … Continue reading

Posted in Climate change, Global warming, Judith Curry, Science | Tagged , , , , , , , | 31 Comments

An acknowledgement, but not really a correction

A few days ago I wrote a post (what matters is the radiative imbalance) in which I claimed that a post by David Stockwell was wrong. David made a few comments on my post, claiming that I had made a … Continue reading

Posted in Climate change, Climate sensitivity, Global warming, Science | Tagged , , , , , , | 18 Comments

Watt about John Cook and the atom bombs?

Not surprisingly, Watts up With That (WUWT) has a post mocking John Cook’s recent quote that the increase in energy associated anthropogenic global warming (AGW) is the same as 4 Hiroshima bombs per second. As I showed in yesterdays’s post, … Continue reading

Posted in Anthony Watts, Climate change, Global warming, Watts Up With That | Tagged , , , , , , | 10 Comments