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Scientists compiled 20th century temperature data in Spain as evidence of climatic change
Date:4/11/2008

This release is available in Spanish.

This research work is the first step to confirm the existence of a temperature change. Their main goal has been to detect the signs of the Climatic Change through the temperatures in Spain, explained to SINC the researcher of the department of Applied Physics of the University of Granada and main author, Matthias Staudt.

The compilation of maximum and minimum temperature series of every month since the end of the 19th century until the beginning of the 21st century has not always been an easy task. The data, which have been collected in 45 Spanish observatories, were not homogeneous in every case. In climatology, a series of data (temporary series) is considered as homogeneous when its content reflects exclusively the climatic evolution (this is, when the different indexed factors are absent). Therefore, the researchers work has mainly consisted in removing inhomogeneous pollution in data.

According to the scientist, analysing the quality of the data which were published in November in the International Journal of Climatology- becomes, the best method to believe in the final results. Technical preparation is essential to take the second step and do research into the rise of temperature at an unquestionable statistical level, he added.

Data homogeneization

Changing a thermometer which has been calibrated in a different way is one of the factors why temperature data usually present incoherencies. In addition, the different reading interpretations of a human being or the frequent location changes of the observatories (changes from a urban environment to an airport, altitude changes, etc.) are problems with which the scientific team has had to deal with.

Moving a thermometer without recording this fact gives r
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Contact: Antonio Marn
amarin@ugr.es
34-958-242-935
Universidad de Granada
Source:Eurekalert

Page: 1 2

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