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Hey delosgatos,
You wrote: “If ‘the CO2/temperature correlation is weak’, what do you make of Venus?”
Nothing. Also nothing of Mars. Venus is much closer to the sun than Earth; Mars is further away. Both have atmospheres high in CO2 concentration, although Venus has a much more dense atmosphere than Earth and Mars a much less dense atmosphere than Earth. What do you make of that?
The CO2/temperature correlation (on Earth, that is) is strong for the warming period 1976-1998 (IPCC’s “poster period”, poor for the cooling period 1944-1976, weak for the warming period 1910-1944 and extremely weak for the 1858-1879 warming period.
Check the records and you can confirm this for yourself.
Regards,
Max