On the “march of the thermometers”. Missed this one. Anthony Watts pointing to “the hard work of E. M. Smith” on ‘dropped’ weather station records. The accusation is always that stations that are warming faster are being kept, those that are cooling are being maliciously discarded.
Funny, they never seem to mention two things about this:
- The ‘dropped’ stations are stations that aren’t automatically uploaded to the weather databases. They are in fact added intermittently by infrequent manual processes. This means that a station will be in the database, seem to be dropped, and then at a later date reappear with all the intervening years of data.
- The trends for the “dropped” stations and the “kept” stations are the same. The only conclusion that can be drawn is that “colder” stations are more likely to need intermittent manual incorporation into the data set because they are more likely to be remote.
For more on this foolishness, go over to the “Dropouts” post on Open Mind and give your head a shake.