Climate, weather, whatever: Antarctic froze good and hard

 Coldest winter on record "down south" in Anarctica. 

Have you ever thought about how to measure the temperature of the world and to detect a tenth of a degree change in it?
Click through to the ventusky map to get a sense of the variance and take a look at the options that vary from a few centimeters above the surface to turbulent kilometers above the surface, most of it measured from instruments more than a 100 km high in the sky.   There are almost no ground stations above the arctic circle now.