Are Claimed Global Record-Temperatures Valid?
This is a good, if "inside baseball" argument, but the killer argument is that the data set is too small to be of use in determining the earths climate over time. This data set only goes back to about 1880, precisely the time the earth was exiting the Little Ice Age. A good comparison would be to take the Average Temperature of Detroit but then begin the data set at the end of September, and only take data through the end of February. The data might be skewed a bit cold, no? Of course it would, and only a charlatan or fool would take this tactic, but this is the tactic the global alarmist cabal has taken. They truncate the evidence to sometime around 1880, so the data shows a sharp climb. But this is expected since the Little Ice Age was the longest, and one of the three coldest temperature depressions during the Holocene. It is the Holocene Winter.
The average temperature over the totality of the Holocene is higher than it is today. The Earth is essentially still trying to climb back to average from this Holocene Winter.
The Holocene and how it undermines climate fear mongers