As the monthly empirical evidence keeps pouring in, the AGW hypothesis and climate model simulations that portray atmospheric CO2 levels being the principal driving force behind global temperature change looks weaker and weaker. A growing chorus of scientists worldwide are now saying that the idea that global warming is caused by 'CO2 vapours' is a quaint, 1800's European hypothesis, but severely lacking in any robust, modern empirical evidence.
While the CO2-vapours based AGW hypothesis crumbles in the face of actual climate data, other scientific explanations regarding global temperature change are looking stronger and stronger. One such hypothesis is that the Southern Oscillation (SO) accounts for some 80% of global temperature variance.
The strength of that explanation appears exceptional when viewing the HadCRUT global temperature change over the last 15 years in comparison to the the Southern Oscillation Index (SOI), in the chart immediately below. The evidence suggests a strong statistical relationship for the SO being the primary driver of temperatures and potential climate change.
In comparison, the relationship between CO2 levels and global temperatures is an obvious weak one, almost statistically non-existent, as the chart below depicts.
Scientists analyzing the below data are now concluding that although CO2 has some impact on temperatures, this incredibly weak statistical evidence is driving their research towards better, more complete explanations.
Additional charts: Climate Models Modern-Temps Fabricated-Temps Historical-Temps
