Climate Models - How Do We Know?

The video explores fundamental questions about climate change, focusing on the levels of CO2 that could be considered dangerous. It discusses the impact of doubling CO2 concentrations on global temperatures and the uncertainty in future emissions due to human decisions. Various climate models predict different temperature rises based on CO2 emissions scenarios. The video also highlights the uncertainties in climate projections, including the effects of El Nino, and emphasizes the consensus among scientific bodies like the IPCC on the warming influence of CO2.

What is one of the biggest questions in climate science today?

• What is the best renewable energy source

• How to increase global temperatures

• What levels of CO2 are considered dangerous

• How to reduce CO2 emissions to zero

What is the projected temperature rise if CO2 levels double?

• 3 degrees Celsius

• 4 degrees Celsius

• 2 degrees Celsius

• 1 degree Celsius

What factor primarily influences future CO2 levels?

• Ocean currents

• Human decisions on fossil fuel use

• Solar activity

• Natural disasters

What is a key uncertainty in climate models?

• The response of El Nino to climate change

• The role of ocean salinity

• The impact of volcanic eruptions

• The effect of solar flares

What is the consensus among scientific bodies regarding CO2?

• CO2 contributes to global warming

• CO2 causes cooling

• CO2 has no effect on climate

• CO2 levels are decreasing