Nov 09

Australian Climate Madness has more on the recent Pachauri kerfluffle:

Here is a screen grab from the YouTube video of Rajendra Pachauri’s address to the University of New South Wales on 28th October 2008, and which has caused such a furore following an article in The Sydney Morning Herald (see here).It is difficult to read the horizontal scale, but it appears that each tick is 20 years, commencing in 1860, with the last tick being “2000”.
What he says is as follows (transcribed from YouTube):
“I’ll just give you this diagram which gives you data and observations in global average surface temperature going back to the beginning of industrialisation, and you notice that there are ups and downs in this set of observations, and that’s essentially because we are dealing with a number of natural factors that bring about changes in the climate. Climate has changed over the ages and there are a whole range of natural factors, solar activity, volcanic activity and so on that can bring about changes in climate.
But what you also would observe from this diagram is that in recent decades this graph has become much steeper and therefore if you draw a line through the last 100 years of observations, you will get something like this as a fit, which gives you a total increase in 100 years of 0.74 degrees Celsius. This is the increase that you might say took place in the twentieth century. However, if you look at the last 50 years, then you get a line which is much steeper, which is almost twice as steep as the total 100 year period. So it will be appropriate to conclude that we are now at a stage where warming is taking place much faster, and if we want further evidence of this we know that eleven of the last twelve years rank among the twelve warmest years since instrumental records of global surface temperature have been maintained.
Read the entire post at Australian Climate Madness.

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