Upper atmosphere? Dirt temperature in your favorite field? Ocean temps (quite a few choices here)? Air temp 5 ft off the ground in the woods? Center of the Earth core temp?
Also, it would seem to depend on the day of the year. From what I've seen, there is a difference in surface air temperature trends depending on the season. Just using one average temperature of some giant sum of masses may or not be significant to an individual or a society.
Depends on the season and time of day.
Almost every night when the big thingy that passes overhead in the sky disappears, it feels colder to me.
The next time that big thingy reappears, it feels warmer.
I think there is a relationship that we don't yet understand.
In Western PA, it almost always gets colder in the winter and warmer in the summer.
It might have something to do with the angle and distance from that big thingy in the sky, but I'm not sure.
Man made global warming...what arrogance.