There are a lot of interesting things. For example, have you noticed when the Sahara makes an appearance? How many of those stations remain in the data set late

There are a lot of interesting things. For example, have you noticed when the Sahara makes an appearance? How many of those stations remain in the data set later on? Given that so-called "anomalies" are deviations from averages over 1951-1980, could the absence of measurements from the Sahara have an effect? And, what happened to Australia?