



take the 1 degree gridded, monthly average temperature data for land from Berkeley Earth

from Berkeley Earth starting at 1840, group it into decades for each latitude and longitude in Europe and most of North America

plot each set of data from the 1840's to the 2000's for each latitude and longitude

The code is provided here









I did the same thing for the entire globe also and the results are here: In all, there were 1863 locations with a complete data set available for this. Overall, you see that pretty much every location warmed by roughly the same amount. Cheesy enough that I have to say it...global warming is apparently global. This is a slightly different way to view the same data that I have in a previous post I did the same thing for the entire globe also and the results are here:









Note that this plot's y-axis covers 6 degrees (C) instead of 4 degrees like the previous one because the spread is a bit larger. In general though, I really like this type of plot. Instead of having to create trendlines, I'm simply setting the opacity of each plot so only ones with a lot of overlap show up as bright white here which functions similarly to a trendline but looks a bit nicer to me.



Finally...an immediate question that you might have is 'where are those ~9000 global points', and the answer is:









It's weighted heavily for the northern hemisphere since there just wasn't great temperature coverage in 1840. If we start at a later date, we get better coverage:







It's weighted heavily for the northern hemisphere since there just wasn't great temperature coverage in 1840. If we start at a later date, we get better coverage:

I tried to come up with a way to visualize how evenly distributed the warming we've seen is, and I settled on the following plot: To generate this, I used a simple algorithm: