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CrazyHorse on 19 February 2010
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kowenicki said:
vlad321 said:
kowenicki said:


I'm not saying either of those things. 

 

Then I don't understand. Youc an't deny humans are outputing ipressive amounts of CO2 in the atmsphere. If you think humans have nothing to do with it, you either disagree with that statement, or the statement that CO2 causes climates to change.

@Football

Then I don't see why we're arguing if you didn't dispute it, probably just my fault.

CO2 production...  I can deny exactly that.

Well, we (humans) account for 3% of all CO2 production on the planet (the other 97% mostly from decay) and as a result we are responsible for adding 1% to the amount of CO2 already there.   The Oceans also add more CO2 as a result of geowarming than we ever would.

Natural variations are the biggest cause by far.... 

Now out of all that to suggest the human CO2 is the main driver is a leap imo.

 

Humans may only account for a small percentage of CO2 production when compared to all other environmental factors added together but the important point is we are a new variable. Previous CO2 emissions would have reached an equilibrium over an extensive time period and we are now greatly upsetting that balance. I'm not saying it will have a large effect, the point is we don't know what effect it will have.

Also the oceans do output CO2 when temperatures rise but other factors also play a role in oceanic CO2 concentrations. Currently the ocean is considered a sink for CO2 (higher atmospheric CO2 causes more to be taken up by the ocean). This could be a great help or a real problem. As the oceans absorb much of the CO2 we put into the atmosphere it is helping to mitigate any warming effects but should the oceanic levels reach a certain concentration they may stop absorbing as much and atmopspheric levels will begin to rise much more dramitically. Similarly, if our CO2 emissions do cause a slight increase in global temperatures this may cause the oceans to start outputting CO2 creating a horrible feedback of continually increasing CO2 and temperature.