Sunday, December 13, 2009

Something else to make you rethink climate science

Is the data on which climate science is based reliable?

Maybe not. One interested observer decided to investigate the figures for climate change based on weather reports from Darwin, Australia.

The raw figures showed a decline in temperature during the course of the twentieth century. More exactly, the temperature started high in 1897, reached a low point in the mid-1940s, before recovering some ground by the 1990s.

So the raw data doesn't easily fit a global warming scare.

But the warming scientists didn't use the raw data. They adjusted the data to remove "inhomogeneities". There can exist legitimate reasons for climate scientists to do this. For instance, if the information from nearby weather stations shows incongruities, or if the station itself moves position.

However, there seems to be no pressing need to adjust the Darwin data. The data from different stations are in close agreement. If any adjustment is necessary, it might be to slightly lower the pre-1941 data, in which case the temperature in 1897 turns out to be much the same as the temperature in 2000.

But the climate scientists made far more drastic adjustments. One group of scientists decided to adjust by beginning the record in 1963, at a low point in temperature. This then creates a small rise in temperature to the year 2000, rather than a fall.

But another group of scientists made an even more radical adjustment. They completely reversed what the the raw data showed. Instead of a cooling of temperature over the course of the century, the adjusted data showed a warming.

When Willis Eschenbach then checked how the adjustments were made he was astonished:

Yikes again, double yikes! What on earth justifies that adjustment? How can they do that? We have five different records covering Darwin from 1941 on. They all agree almost exactly. Why adjust them at all? They’ve just added a huge artificial totally imaginary trend to the last half of the raw data! Now it looks like the IPCC diagram in Figure 1, all right … but a six degree per century trend? And in the shape of a regular stepped pyramid climbing to heaven? What’s up with that?

Those, dear friends, are the clumsy fingerprints of someone messing with the data Egyptian style … they are indisputable evidence that the “homogenized” data has been changed to fit someone’s preconceptions about whether the earth is warming.

If the data for Darwin can be adjusted like this, then how do we know it hasn't been elsewhere as well? There needs to be a lot more scrutiny of the science on which current claims of dramatic, man-made global warming is based.

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