(January 20, 2013 at 9:23 am)Aractus Wrote: I didn't disagree that oceans are acidifying. The claim that it is due to anthropogenic CO2 is completely wrong. The level of CO2 that we output contributes to ocean acidification, but it isn't the cause of it (because it makes little difference to how much CO2 gets absorbed by the ocean). With no human activity present, the carbon emitters still outbalance the carbon sinks, this is due to the ocean absorbing less CO2 now then it did in the past. Thus it's untrue to say that ocean acidification is anthropogenic - it happens anyway.
You mean it's just part of another cycle like the ones here?:
http://www.daviesand.com/Choices/Precaut.../New_Data/
Curious how the last points in that plot show a spike which doesn't match with the other cycles before humans started spewing CO2 into the atmosphere.