Dr. Evans, who's data Steele uses and he responded to my questions with an enlightening email, along with suggestions for further investigation. Now that I've spent more time looking into the question of 'what' and 'how' scientists know about ocean acidification, I've decided to give Steele's talk from 2:45 to 5:59 another dissection.
For students of The Art of the Republican Attack on Science, this will be worth your while.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Recovering Whales, Ocean Acidification, and Climate Horror Stories by JIm Steele (2:45-5:59) https://www.youtube.com/watch?v=ooaZLoJXhu4&t=2m45s
Part 3 Jim Steele's Presentation to the Life Members of the International Electrical and Electronic Engineers. Jim is the author of "Landscapes & Cycles: An Environmentalist's Journey to Climate Skepticism"
~ ~ ~ ~ ~ ~ ~
2:45 - "Here's your question about ocean acidification. This upwelling is a tremendous benefit. If you do a vertical profile of the ocean, if you look at the surface the pH is gonna be around 8.2-8.3, as you drop down what you see is that it very quickly it becomes more acidic, because bacteria digest everything, we start to releasing the carbon. So you can see in the upwelling zones you can see it's down to 7.7 And when it upwells it brings it right to the coast"~ ~ ~
First off, notice Jim drawing his audience's attention away from how the oceans absorb CO2, instead focusing on regional upwelling of abyssal acidic waters along the continental shelf.
~ ~ ~ ~ ~ ~ ~
3:20 - "People say on average the pH is getting more, they don't know that. It's a model."