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Archived Rebuttal
This is the archived Basic rebuttal to the climate myth "Dropped stations introduce warming bias". Click here to view the latest rebuttal.
What the science says...
| Dropped stations show more warming than kept stations. |
An oft-cited skeptic argument is that the decrease in available temperature measuring stations during the 1990s introduces an increased bias towards warming. The argument is based upon the premise put forward by some climate change skeptics that stations which show more warming were kept and ones that show less warming were dropped. The reason this assumption is made is because during the 1990s there was a large reduction in the number of meteorological stations being used for global temperature analyses.
In order to test this theory, several independent researchers (Tamino, Ron Broberg, Zeke Hausfather, Joseph at Residual Analysis and others at the Clear Climate Code Project) and have calculated whether the stations dropped showed less warming than the ones kept. The results? Several find no difference and several find that dropped stations show more warming.
Furthermore, it is also important to note that the methods used in global temperature analyses make them robust to the loss of stations because they use techniques which incorporate multiple nearby stations into analysis of any individual region.
So to conclude: Independent researchers have shown that there is no truth to the claim that cooling stations were removed, in fact evidence suggests that if these stations were included, warming would be shown to be slightly greater.
Updated on 2010-08-24 by robert way.
THE ESCALATOR
(free to republish)