Thermal bounce

Here are some maps demonstrating how there seems to be a temperature bounce around a sharp peak.

If you have not seen these before the temperature plot consists of vertical strips where each strip is the north to south weighted mean for one month. Place them side by side. Note: the tropical mean is non-standard, not necessarily +-20 degrees, is a narrow strip around zero latitude.

Same thing for the other satellite set. I am trying to avoid favouring one over the other.

Something to note is the crab shape of those temperature spikes where it will be heat flowing toward the poles over some months.

Long ago, the 1878 spike which is shown here in Hadcrut3, even though the data back then was not so good.

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