Today, these studies are done with high- resolution(≤2km) satellites that measure surface temperature globally. The comparison is usually the average of all measured surface temperatures across the globe. So they"re referring to the average surface temperature of the Earth, not your backyard. Locally, the lower 48 had the 42nd warmest year on record for average surface temperature, and there is also variation by region within that area.
Now obviously, we have not had expensive satellites with capable instrumentation since the official record began. So as you go back to 1880 surface temperature was measured at observation stations by hand. Which was biased because in 1880 those observations were made in areas that were easily accessible by foot/car/ship, and also at lower resolution globally than today"s satellite data. There is uncertainty there that must be accounted for.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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