Vogelzang wrote:Proof AGW is a scam.
"A common exercise in any intro statistic class is to split the students into two groups, one group flips a coin 100 times and records the results, another just makes 100 entries up off the top of their heads. The teacher then comes back, looks at the two lists, and usually identifies which is which with hardly a glance. How? The trick is the teacher knows that on the real list, there will be several sequences of four or five in a row of all heads or all tails, whereas on the other list students will tend to stick with a more heads-tails-heads-tails alternating approach.
Now, everyone knew what I meant just now when I wrote trick, right? Nothing deceitful, simply the method used to get an answer to a math problem. With that in mind, let's look at this 1999 email purporting to be evidence of fraud among some climate scientists:
"I've just completed Mike's Nature trick of adding in the real temps to each series for the last 20 years (i.e., from 1981 onwards) and from 1961 for Keith's to hide the decline."
The email is one of thousands sent over a period of ten years by climate researchers and other scientists, journalists, lobbyists, and the occasional flake, stolen from a university network a few days ago. DeSmogBlog has more on the theft. Obviously, emails don't change the observed reality of human assisted climate change in the cryosphere and elsewhere. Nevertheless, climate change denialists have combed through them looking for anything they can pull out of context and pass off as evidence of a global conspiracy. They're getting some media mileage out of it. Even though, so far, the best they've been able to come up with is examples like the above.
The "Mike" is Michael Mann, "hide" means to account for (See also this comment), and the trick referred to is how to resolve a question involving two sets of data. One set is the "real" actual temperature readings, the other is by proxy, tree-rings, corals, ice cores and the like. When reconstructing the temperature record going back a thousand years or more, proxies are all you get -- there were no super accurate thermometers handily placed around the globe during medieval times! But proxies only give an approximation, hence the large variance in the now familiar reconstruction graph affectionately known as the Hockey Stick represented below as shading around the blue and red lines."
http://www.dailykos.com/storyonly/2009/ ... 04/-Trickn