I had the 90% explained to me by a learned sod as.
After all the models were runs and all the data and reports assessed and their conclusions mapped out then 90 times out of 100 the result would exclude all known causes other than anthropogenic can be linked to the observed increase in global average temperatures.
Based on the evidence presented there is a 90% likelihood that anthropogenic sources of CO2e are contributing to an increase in the observed global temperature of the planet.
