Climate Science

A colleague alerted me to a small town Nevada newspaper (The Ely Times) that has recently taken to publishing some rather egregious contrarian editorials and op-ed pieces about climate change (see e.g. here, and here).

Much in the spirit of what we attempt here at RealClimate (that is, public outreach and education), I figured I’d make an effort to inform the paper’s readers of the misleading nature of what they’re being told.

I decided to respond to their most recent editorial ‘Is CO₂ a Poison?’ and other questions which wasn’t really a contrarian hit piece (i.e., what we’re used to seeing on the op-ed pages of the Wall Street Journal) so much as a confused mix of half-truths, irrelevant facts, flat-out errors, and, admittedly, some reasonable points (e.g. that there are challenging issues of fairness in how we go about achieving greenhouse gas emissions cutbacks). My letter was firmly critical, but, I felt, reasonably polite and fair.

I never received any correspondence from the editor (Kent Harper), and assumed that he had thus chosen not to publish my letter. So you can imagine my surprise yesterday in finding that, not only did the editor publish my letter, but in fact ran a contemporaneous and scattershot rebuttal along with it.

What I found particularly amusing was his denial that the original editorial contained any errors, as I had asserted. In particular, he challenged me to defend my assertion that he was wrong in claiming that the natural greenhouse effect leads to a warming of about 100F and that the correct number was closer to 60F.

Here is Mr. Kent, in his own words:

I asked Dr. Mann, in an answer to his e-mail, if the Wikipedia entry on the Greenhouse Effect (http://en.wikipedia.org/wiki/Greenhouse_effect) was incorrect. It said: “The Earth’s average surface temperature of 15 C (288 K) is about 33 C warmer than it would be without the greenhouse effect.” A celsius temperature of 33 degrees, converts to 91.4 degrees Fahrenheit, which I rounded off to “almost 100 degrees”.

Kent: if you are reading this, I would be more than happy to personally answer your question. But since you’ve decided to take our ‘discussion’ public anyway, I thought I’d rather use this as a ‘learning moment’ here at RealClimate. So I encourage our readers to provide their own answers to your question in the comments below.

Steve Milloy has let fly with the results of his twisted survey of climate scientists, pretty much as we expected. It’s not worth analyzing in any great depth, I’m sure we all have better ways to spend our time, but one tidbit jumped out at me. [Read more…] about Did we call it or what

Just about two years ago, Chemistry Nobelist, and atmospheric scientist Paul Crutzen opened a huge can of worms by suggesting that, since the world doesn’t seem to be getting its act together to significantly reduce CO2 emissions, it would be prudent to think about emergency measures in which we engineer ourselves out of the crisis by monkeying directly with the Earth’s solar radiation input instead of dealing with the CO2 content of the atmosphere. The specific proposal was to inject chemicals into the stratosphere that would form sulfate aerosols and hence block sunlight. Crude estimates suggest that the aerosol fix (if it is indeed a fix and doesn’t create more problem than it solves) is more technologically feasible than sci-fi dreams of sunshades at the Lagrange point. Not to say technologically feasible, necessarily, but not so far out as the other schemes. Crutzen’s idea, and related geoengineering proposals, have been discussed here on RealClimate. The subject is once more in the news, thanks to this chipper little op-ed by Ken Caldeira, which appeared in the New York Times this week.

Update: I just noticed that our original RealClimate piece was done before Crutzen’s article was published. You’ll find his article here (subscription not required).
[Read more…] about Gee-Whiz Geoengineering

Daniel Botkin, emeritus professor of ecology at UC Santa Barbara, argues in the Wall Street Journal (Oct 17, page A19) that global warming will not have much impact on life on Earth. We’ll summarize some of his points and then take our turn: [Read more…] about Global Warming Delusions at the Wall Street Journal

Gavin Schmidt and Michael Mann

Update 10/18/07: We are very disappointed that the Washington Post has declined to run an op-ed placing the alleged 9 ‘errors’ in a proper scientific context, despite having run an extremely misleading news article last week entitled “UK Judge Rules Gore’s Climate Film Has 9 Errors”.

Last week, a UK High Court judge rejected a call to restrict the showing of Al Gore’s An Inconvenient Truth (AIT) in British schools. The judge, Justice Burton found that “Al Gore’s presentation of the causes and likely effects of climate change in the film was broadly accurate” (which accords with our original assessment). There has been a lot of comment and controversy over this decision because of the judges commentary on 9 alleged “errors” (note the quotation marks!) in the movie’s description of the science. The judge referred to these as ‘errors’ in quotations precisely to emphasize that, while these were points that could be contested, it was not clear that they were actually errors (see Deltoid for more on that).

[Read more…] about Convenient Untruths

I got an email Climate Expert Survey today from DemandDebate.com, a creation of Steve Milloy. Milloy has practiced to deceive before in the climate arena, and his junkscience.com, claiming to debunk the junk science of others, is actually a terrific source of specious deception in its own right. This survey looks like another such initiative. (Note added later: If you get a copy of this, post a comment or send us an email. We’d like to keep track.)

[Read more…] about The “Have you stopped beating your wife yet (yes/no)” questionnaire