As you can see in Fig. 7, it is a tough area from which to gather data.
The only things separating them are imaginary latitude and longitude lines, which do nothing real to separate the actual ocean water.
In reality it is one body of ocean water: The Southern Ocean, so the graphs have a similarity to them.
But, since there were 521 separate "cruises" during which they collected "station" data at 55,778 station locations, from which they took 2,942,762 usable temperature readings (at various depths), we need something to arrange them in manageable sizes, hence the three Zones.
|Fig. 7 (All Zones Here)|
Professor Mitrovica of Harvard had stated in a couple of videos that the "bathtub model," as well as the "global mean average sea level rise" notions, were sources of blindness to the realities of sea level change (see videos at Peak Sea Level - 2, and at the end of this post).
The three Zones, and graphs associated with each Zone, are discussed in today's post, before that were discussed in the post On The Origin of the Sea-level Seesaw - 4, and were also discussed in the first post exercising this data (The Warming Science Commentariat - 5).
I did it that way because I wanted to discuss, in Dredd Blog series which focused on a particular aspect, the different concepts which these data suggested.
In future posts I will look at Zones from other database sources to see if the deep subsurface ocean, in less remote locations, follows a similar pattern (the sea-saw or "saw tooth" pattern of ups and downs).
I hope you learned from this exercise as I did.
Check out the previous post in this series here.
Professor Jerry Mitrovica:
09:15 using global average mean sea level rise has led us astray for a hundred years
15:20 taking the average [sea level] is assuming something ... it assumes what we call the "bathtub model" ... sea level rises uniformly ... that leads to problems ... the European problem ... this is completely wrong ... sea level does not rise uniformly ... not even close