how not to calculate temperatures, pt. 3

how not to calculate temperatures, pt. 3

My disagreement with Steven Goddard has focused on his methodology. His approach is quite simple: he just averages all the temperatures by year for each station, and then averages all the annual means together for all stations in each year.

I’ve been critical of this approach because I’ve argued that it can result in climatology-related biases when the composition of the station network changes. For example, if the decline in reporting stations post-1990 resulted in fewer stations from lower-latitude areas, it would introduce a cooling bias into the resulting temperature record that is unrelated to actual changing temperatures.

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