It is proven irrefutably in [G17] p5-10 that there is almost no correlation between the atmosphere's CO₂ content and its atmospheric warming effect. The Fig.006 diagrams were copied from [G17]. The upper pair shows that during the last 400000 years T fluctuations preceded rather than followed, those of atmospheric CO₂ concentrations. The lower pair shows 1996 and 2001 IPCC charts for the medieval warm period and following little ice age. The medieval warm period was eliminated from the 2001 chart. Its existence is well documented in [G17], [w21].

There seems to have been a deliberate attempt to prove that Ts must have risen since around 1850 solely due to atmospheric CO₂ increase since that time.  

However, an independent report by statisticians (US Senate 2005), perhaps the most devastating scientific criticism yet leveled at the UN on climate change, concluded not only that the UN's 2001 temperature reconstruction had used inappropriate statistical methods and data but also that many of the supporting scientific papers, both before and after the 2001 report, had been written by a small and closely-connected group of palaeo-climatologists, who effectively dominated their field worldwide, and were all intimately linked to the principal author of the UN's 2001 graph.[G17]11... Today's temperatures are not exceptional... the mediaeval warm period was at least as warm as the present and probably up to 3°C warmer. However, its timing and extent varied somewhat from place to place, as is to be expected given the mathematically-chaotic nature of climate. ([G17]16) .. the UN concedes that there is no evidence of any anthropogenic contribution to rises in sea levels so far.

There are other reasons for doubting that atmospheric CO₂ accumulation is the major cause of global warming. 97.7% of the CO₂ (12.5 x 10⁶ t/year) that enters the atmosphere is not anthropogenic [w01]. The rest cycles between the land, ocean and the atmosphere. More than half (15.5 x 10⁶ t/year) of the total anthropogenic CO₂ released into the atmosphere (28 x 10⁶ t/year) is absorbed into the ocean and land (photosynthesis..). As oceans surfaces are warmed in spring, CO₂ in them becomes supersaturated. Warmed sea-water releases more dissolved CO₂ for the same reason that cold champagne releases bubbles when it is warmed. Millions of tons of CO₂ fizz out of the oceans in early summer storms- these tons of CO₂ are reabsorbed into cooling waters during early winter storms. A single volcanic eruption can release more CO₂ into the atmosphere than is added to it anthropogenically in a year.