February 14, 2010

Have you seen this article - Climategate U-turn as scientist at centre of row admits: There has been no global warming since 1995

Sounds like a win right? Read the article carefully, I'm not quite sure that's waht he actually said:

He also agreed that there had been two periods which experienced similar warming, from 1910 to 1940 and from 1975 to 1998, but said these could be explained by natural phenomena whereas more recent warming could not.

He further admitted that in the last 15 years there had been no ‘statistically significant’ warming, although he argued this was a blip rather than the long-term trend.

I don't know who wrote this, but that first paragraph is misleading as hell. What it says is that Jones is now ascribing the 1975 to 1998 warming to natural rather than AGW causes. That is incorrect. 1975 to 1998 is the main period in which AGW is supposed to have occurred. The second paragraph is also misleading as hell. A quick read and it appears he is admitting global warming has stopped, but that isn't what he is actually say. He is actually claiming that the process is continuing we just are seeing an output from it at the moment.

The other major mistake in the article is the claim that he is admitting the medieval warming period could have been global. Read the article carefully. That is not what he says:

Professor Jones departed from this consensus when he said: ‘There is much debate over whether the Medieval Warm Period was global in extent or not. The MWP is most clearly expressed in parts of North America, the North Atlantic and Europe and parts of Asia.

‘For it to be global in extent, the MWP would need to be seen clearly in more records from the tropical regions and the Southern hemisphere. There are very few palaeoclimatic records for these latter two regions.

‘Of course, if the MWP was shown to be global in extent and as warm or warmer than today, then obviously the late 20th Century warmth would not be unprecedented. On the other hand, if the MWP was global, but was less warm than today, then the current warmth would be unprecedented.’

What he says is there is no data to show that the MWP was global, but if there was and the temps were less than they are today than AGW would still be the main cause.

I would be very careful in referencing this as an anti-AGW victory.

source added

Posted by: chad98036 at 12:50 PM | Comments (13) | Add Comment
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