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Have you had an electrical accident in the garden?
On 22/08/2011 17:02, Granity wrote:
Wiki is usually reliable on most scientific and mathematical topics and you can always check the references from the bibliography. But not, unfortunately, on global warming matters, as there was the case where one of the AGW activists who was also a Wiki editor went through and rewrote all the articles about the Medieval warm period and the mini ice-age saying that scientists had now come to the conclusion that they didn't exist, (not true) just to try and give credence to the now defunct hockey-stick graph which had eliminated them to back up the claim by M. Mann of unprecedented warming. He was exposed and banned from wiki. You have to be careful on controversial topics. And your paraphrasing of this incident is a travesty against the scientific evidence and a slur against perfectly good climate science researchers. Even the sceptics admit that there has been an unprecedented rapid rise in global temperatures during the last three decades of the twentieth century and that you have to include greenhouse gas forcing to balance the energy budget. The suns output is monitored by satellites over that period and did not change by anything like enough. I don't defend hacking at Wiki articles by either side but both of them do it. And the anti-science lobby groups working for the oil and coal industry have been using slur tactics and smoke and mirror techniques they perfected in their campaign to keep suckers smoking tobacco. Look under the skin of many of the prominent deniers for hire and you will find someone with previous for denying that smoking tobacco can cause cancer and/or CFCs damage the ozone layer. You can use this as a pretty good empirical test of their scientific integrity. What has been determined is that the Medieval Warm period and the mini-ice age were mainly local European and northern hemisphere effects rather than a *GLOBAL* synchronous warming or cooling. Unfortunately, there are no contemporaneous written records of Southern hemisphere weather of the period so we are reliant on painstakingly derived proxy data for sites with suitable core samples or slow growing trees. The hockey stick was only wrong in the sense that its shaft was a bit too straight. It does not alter the conclusion that we are changing the climate through the addition of CO2 to the atmosphere. Regards, Martin Brown |
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