Many thanks to : “tty” in a comment under the thermometers posting for pointing me to the following graph:
“That is the temperature record for Uppsala, Sweden 1722-2005, one of the longest and best temperature series in the world, courtesy of SMHI, the Swedish Weather Service (which is rather pro AGW). ”
So what do we see when we look at this graph? A really big dip with the bottom at right about 1880. I think we now know why GIStemp picked 1880 as the date for cutoff for old records. There is also a nice little local droop over the 1950 to 1980 “baseline” visible in the graph.
We wouldn’t want that very warm 1720-30 period or even those average late 1700’s messing up our nice little trend out of the dead bottom of the last minima of the Little Ice Age…