Current sea surface temperature anomaly

This is the toughest thing to explain, especially to heyhoes.  You won't see any facebook-banned warmies trotting this out.

So, basically you take 40 years of temperature measurements (satellite), and you average every single point, or grid square.  Then  you look at today's temperature, and subtract the average.  It's only plus or minus a few degrees C.

In general, you can see how the Gulf Stream has gone, and that's why the UK freezes.  The Southern Hemisphere is cooler, and I think that's because the average includes warmer times during the 80's and 90's.  It supports my hypothesis that temperatures oscillate north and south over a 20 year cycle. 

For the next 20 years we will see heat energy going south.  We will freeze in the North.  But who knows what happens in the 300 year cycle?