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View Diary: Why Cold Weather Does Not Disprove Global Warming (67 comments)

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  •  Please forgive a mostly ignorant question (0+ / 0-)

    I have read that increased temps could  cause melting of permafrost, thereby releasing even more CO2, and warming the ocean also releases more CO2. I presume that this is  positive feedback that they think can make things worse. Judging by the graphs, the average global temperature and CO2  rise and fall almost in lock-step with each other over hundreds of thousands of years. In light of all this, can someone tell me how we know how much, (historically) the CO2 caused increased temperatures vs. higher temperatures causing more atmospheric CO2?
       

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