UK climate scientists manipulated data to exaggerate global warming? Climategate just got much, much bigger. And all thanks to the Russians who, with perfect timing, dropped this bombshell just as the world’s leaders are gathering in Copenhagen.

Climategate has already affected Russia. On Tuesday, the Moscow-based Institute of Economic Analysis (IEA) issued a report claiming that the Hadley Center for Climate Change based at the headquarters of the British Meteorological Office in Exeter (Devon, England) had probably tampered with Russian-climate data.

The IEA believes that Russian meteorological-station data did not substantiate the anthropogenic global-warming theory. Analysts say Russian meteorological stations cover most of the country’s territory, and that the Hadley Center had used data submitted by only 25% of such stations in its reports. Over 40% of Russian territory was not included in global-temperature calculations for some other reasons, rather than the lack of meteorological stations and observations.

The data of stations located in areas not listed in the Hadley Climate Research Unit Temperature UK (HadCRUT) survey often does not show any substantial warming in the late 20th century and the early 21st century.

The HadCRUT database includes specific stations providing incomplete data and highlighting the global-warming process, rather than stations facilitating uninterrupted observations.

On the whole, climatologists use the incomplete findings of meteorological stations far more often than those providing complete observations.

IEA analysts say climatologists use the data of stations located in large populated centers that are influenced by the urban-warming effect more frequently than the correct data of remote stations.

The scale of global warming was exaggerated due to temperature distortions for Russia accounting for 12.5% of the world’s land mass. The IEA said it was necessary to recalculate all global-temperature data in order to assess the scale of such exaggeration.

Global-temperature data will have to be modified if similar climate-date procedures have been used from other national data because the calculations used by COP15 analysts, including financial calculations, are based on HadCRUT research.

The crux of the argument is that the CRU cherry picked data following the same methods that have been done everywhere else. They ignored data covering 40% of Russia and chose data that showed a warming trend over statistically preferable alternatives when available. They ignored completeness of data, preferred urban data, strongly preferred data from stations that relocated, ignored length of data set.

On the final page of the original Russian article there is a chart that shows that CRU’s selective use of 25% of the data created 0.64C more warming than simply using all of the raw data would have done. The complete set of data show 1.4C rise since 1860, the CRU set shows 2.06C rise over the same period.

Unfortunately,CRU has refused to release the raw data.  This data and code release is the subject of illegal blocking of FOIA’s is one of the keys in the Climategate emails.  We need to know the list of stations used and we must have copies of the raw data. How else can we trust their numbers?

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