| Squilliam said: Does that show that only 10% of stations are accurate to within 1 degree C? Do you know whether its an inaccuracy which would average out or does it skew data one particular way? |
Yes, it shows that only 10% are accurate to better than 1 degree C. 90% are less accurate than 1 degree C.
edit: sorry late night~
As for the bias anyone can look at this on a station by station basis for themselves, but I know from having perused the data extensively that it is far and away skewed towards a warming bias thanks to positioning near things such as asphalt, exhaust vents, tarmacs where jet wash flows over the station, on top of buildings, and so many other blatant problems.
I feel beyond confident in stating that the bias is overwhelmingly a warm one. In fact I am struggling to think of a single instance I've come across where a bias produced a negative temperature bias.....The only possible exception I can think of is in the case of lost/moved stations - sometimes the stations are moved and their geographic location isn't updated in the DB - this movement may have, in some cases, been a cooling bias.
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| To Each Man, Responsibility |
