Posts Tagged ‘hockey stick team’

Does CO2 Drive the Earth’s Climate System? Comments on the Latest NASA GISS Paper

Monday, October 18th, 2010

Source:  Global Warming

by Roy W. Spencer, Ph. D.

(edited for clarity at 2:45 p.m.)

There was a very clever paper published in Science this past week by Lacis, Schmidt, Rind, and Ruedy that uses the GISS climate model (ModelE) in an attempt to prove that carbon dioxide is the main driver of the climate system.

This paper admits that its goal is to counter the oft-quoted claim that water vapor is the main greenhouse gas in our atmosphere. (They provide a 1991 Lindzen reference as an example of that claim).

Through a series of computations and arguments, the authors claim that is actually the CO2, not water vapor, that sustains the warmth of our climate system.

I suspect this paper will result in as many opinions in the skeptic community as there are skeptics giving opinions. But unless one is very careful in reading this paper and knows exactly what the authors are talking about, it is easy to get distracted by superfluous details and miss the main point.

For instance, their table comparing the atmospheres of the Earth, Venus, and Mars does nothing to refute the importance of water vapor to the Earth’s average temperature. While they show that the atmosphere of Mars is very thin, they fail to point out the Martian atmosphere actually has more CO2 than our atmosphere does.

I do not have a problem with the authors’ calculations or their climate model experiment per se. There is not much new here, and their model run produces about what I would expect. It is an interesting exercise that has value by itself.

It is instead their line of reasoning I object to — what they claim their model results mean in terms of causation– in their obvious attempt to relegate the role of water vapor in the atmosphere to that of a passive component that merely responds to the warming effect of CO2…the real driver (they claim) of the climate system. (more…)

Global warming propagandist slapped down by Wikipedia

Monday, October 18th, 2010

William Connolley

Source: the Financial Post

by Lawrence Solomon

William Connolley, arguably the world’s most influential global warming advocate after Al Gore, has lost his bully pulpit. Connolley did not wield his influence by the quality of his research or the force of his argument but through his administrative position at Wikipedia, the most popular reference source on the planet.

Through his position, Connolley for years kept dissenting views on global warming out of Wikipedia, allowing only those that promoted the view that global warming represented a threat to mankind. As a result, Wikipedia became a leading source of global warming propaganda, with Connolley its chief propagandist.

His career as a global warming propagandist has now been stopped, following a unanimous verdict that came down today through an arbitration proceeding conducted by Wikipedia. In the decision, a slap-down for the once-powerful Connolley by his peers, he has been barred from participating in any article, discussion or forum dealing with global warming. In addition, because he rewrote biographies of scientists and others he disagreed with, to either belittle their accomplishments or make them appear to be frauds, Wikipedia barred him — again unanimously — from editing biographies of those in the climate change field.

I have written several columns for the National Post on Connolley’s role as a propagandist. Two of them appear here and here.