Uncertainties - How Do We Know?

The video explains how rising CO2 levels from fossil fuel burning are linked to global warming. It discusses three key aspects: physics, forcings, and fingerprints. The physics shows CO2's warming influence, while investigations into other forcings like solar activity and ocean heat reveal no alternative causes. CO2 fingerprints, such as warming patterns and model predictions, align with observed data. Human activities, particularly increased greenhouse gases, are necessary to explain recent warming trends, as models with only natural factors show cooling.

What is the primary reason for the increase in CO2 levels according to the video?

• Solar flares

• Volcanic eruptions

• Fossil fuel burning

• Deforestation

Which of the following is NOT a method used to identify other potential causes of warming?

• Measuring volcanic activity

• Observing solar brightness

• Tracking deforestation rates

• Monitoring ocean heat content

What is a key characteristic of CO2-induced warming?

• Warming in the upper stratosphere

• Cooling at the surface

• Warming at the surface and cooling in the upper atmosphere

• Uniform warming throughout the atmosphere

According to the video, which area is predicted to warm more due to climate change?

• Low latitude areas

• Equatorial regions

• Middle of oceans

• Middle of continents

What do computer models need to include to accurately recreate recent warming patterns?

• Only natural factors

• Both natural and human factors

• Neither natural nor human factors

• Only human factors