My last post looked at how different the last 3 Decembers have been when comparing the different indices located over the oceans. What about the changes in the oceans comparing, say last December to the current levels?
Let's break down last December in two parts. The colors show the warmer and colder locations compared to the average. I indicated these "cool and warm" pools with a "C" and a "W". Notice how they changed from the beginning of the month to the end of the month.