Hi,
This type of error has been found in a number of these latest datasets. The problem is that as soon as their model shows the slightest sign of proving warming, this is where they stop.

One of the problems is the effect of localized heat island effect upon the the monitoring station/s it skews the results by just the amount that they are looking for.

A Local New Zealand researcher has also done a lot of research in this area and has found that the average temperature has been dropping in our area for about the last six maybe seven years, but he has been howled down by those pushing the Man Made Global Warming barrow. His statistical analysis methods are very good whereas his opponents methods leave a lot to be desired.

>http://www.norcalblogs.com/watts/2007/08/1998_no_longer_the_hottest_yea.html
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>Once again, it seems the study's authors refused to release the algorithm(s) they used to process the data. Reverse-engineering was required.
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>The dangers of idealogues in this field (e.g. the Mann "hockey stick") are eloquently discussed by Orson Scott Card.