Besides which, the Earths position relative to the sun and the suns immission intensity have far more bearing on temperature than most of the other factors.

Another factor few people like to consider, is that so called "natural events" both geological, and stellar, have had on different occassions much more rapid onsets and durational effects than climatoligists or politicans supporting the current "human only cuase agenda" wish to make known for public consumption just becuase it puts holes in the political agenda behind the current push.

As a side note: the rising co2 levels still havent been proven, nor does all the evidence point towrds, it being a direct cuase of climate change when it could in fact be an effect, the proccess relationship between them isnt as of yet understood well enough to say with certianty that one drives the other.

Additionally geologic records alone show countless times where the earth quite suddenly cooled down and or warmed up (well within a short fifty to 100 year period) and to greater extents than it is currently doing (and or projected to do) in both duration and temperature shift...long, long before humanity's presence on the planet could possibely cuase any signifigant changes.