Originally posted by pjclarke
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It is well accepted that CO2 alone is NOT responsible for the radiative imbalance, there has to be positive feedback, which is in dispute:
Research « Roy Spencer, Ph. D.


The fact is on average it hasn't warmed since the beginning of 2000, and the cooling has begun. 2010 was close to 1998 but 1998 was warmer. No scientist has stated 2010 was the hottest year. GISS put it equal to 2005, and the other temperature records have it slightly cooler than 1998.
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