Canuck wrote:
"I was getting was more directed at whether there has been any work done at understanding the future capacity of the oceans."

There was an article in Scientific American indirectdly discussing it, IIRC, within the last year. The point of the article was that coastal waters have absorbed so much CO2 that they have become more acidic decreasing the ability of shellfish to make shells.

You might look it up.

Canuck wrote:
"Are you saying we can quantify the decrease in the rate of ocean CO2 absorption"

Based on what I've been reading that is precisely what I am saying.

Google the following exactly as below:
"ocean acidification" and "CO2"
some of the links are not to be trusted ... but some are such as these:
http://www.pmel.noaa.gov/co2/co2-home.html
http://news.bbc.co.uk/2/low/science/nature/4633681.stm

DA Morgan