Read here and here. Catastrophic anthropogenic global warming (CAGW), which theoretically causes climate/weather disasters, relies solely on the climate being highly sensitive to CO2 atmospheric levels. For global warming to reach the predicted IPCC's "catastrophic" global warming of at least 3°C infers that a doubling of CO2 levels is required - a high climate sensitivity guesstimate by the IPCC modellers. But does this guesstimate reflect observational reality?
The simple answer is 'No.' The key sensitivity guesstimate and predicted warming fail empirical scrutiny.
A new study by the MIT climate research area confirms that the climate sensitivity guesstimate is significantly too high per the real world empirical evidence. Instead, the actual climate sensitivity based on empirical measurements is approximately 0.7°C per doubling of CO2 levels, which will not lead to any of the claimed climate disruption and/or weather disasters that alarmists rely on to frighten policymakers.
This new scientific finding helps explain why the climate models have been such miserable failures regarding global warming predictions, as noted by these charts:
Previous failed-prediction, climate-model and peer-reviewed postings. Additional modern temperature charts.