Where can I find some real numbers? I want to know more than just the trend.
Probably in the September 29 issue of Nature. But wait...
Google finds:
http://www.ipsl.jussieu.fr/~jomce/acidification/paper/Orr_OnlineNature04095.pdf
This is the referenced Nature paper, and now you and I don't need to go to the library to read it!