Quote from stu:
Sure, everyone that doesn't agree with you is an "ass wipe". That's great 'science' you are going with there.
Nett CO2 has already been addressed.
Natural sinks can take up more CO2 than is released naturally into the atmosphere. Good. They don't take up natural CO2 plus all the anthropic CO2. Not good.
(Naturally released CO2 each year + anthropic emissions of CO2 each year) - take up from natural sinks of CO2 = a net annual accumulation of surplus atmospheric CO2 .
A net surplus accumulation of CO2 that can only be coming from anthropic sources. There is no other candidate.
Unless of course you are including Unicorn farts into the equation and assuming them to be natural which quite honestly, wouldn't surprise me one bit.