Happycamper
Sweet Dreams Babycakes
Various people have not bothered to respond before, I'm not the first.
http://www.youtube.com/watch?v=Hm9K0HAvbqo
4:38 in this video
However if you are willing to watch the Director of the International Artic Research Centre (Until 2007) say in a video clip that there is nothing unusual at the artic I can get you that clip, will take a moment to find.Another British scientist - Chris Folland of the Met Offices Hadley Centre - wrote the same day that using Briffas data might be awkward, because it suggested the past was too warm. This, he lamented, dilutes the message rather significantly.
Over the next few days, Briffa, Jones, Folland and Mann emailed each other furiously. Mann was fearful that if Briffas trees made the IPCC diagram, the sceptics [would] have a field day casting doubt on our ability to understand the factors that influence these estimates and, thus, can undermine faith [in them] - I dont think that doubt is scientifically justified, and Id hate to be the one to have to give it fodder!
Finally, Briffa changed the way he computed his data and submitted a revised version. This brought his work into line for earlier centuries, and cooled them significantly. But alas, it created another, potentially even more serious, problem.
According to his tree rings, the period since 1960 had not seen a steep rise in temperature, as actual temperature readings showed - but a large and steady decline, so calling into question the accuracy of the earlier data derived from tree rings.
This is the context in which, seven
weeks later, Jones presented his trick - as simple as it was deceptive.
All he had to do was cut off Briffas inconvenient data at the point where the decline started, in 1961, and replace it with actual temperature readings, which showed an increase.
On the hockey stick graph, his line is abruptly terminated - but the end of the line is obscured by the other lines.
@ Reece regarding 'trick'
Not so innocent when you realise that a trick can also mean selectively leaving out data (and hiding it) when it doesnt support the theory you are trying to prove, but including it again when it does.
http://www.youtube.com/watch?v=Hm9K0HAvbqo
4:38 in this video