Climate: Feedback Loops & Albedo Effect

A negative feedback loop is a process that counteracts changes in a system, helping to maintain stability by reducing the effects of disturbances.

A positive feedback loop is a process that amplifies changes in a system, pushing it towards an extreme state.

Albedo is the measure of how much sunlight is reflected by a surface, expressed as a percentage.

Ice and snow have the highest albedo, reflecting most of the sunlight that hits them.

Dark soil has the lowest albedo, absorbing most of the sunlight.

Greenhouse gases are gases in the Earth's atmosphere that trap heat, contributing to the greenhouse effect.

Carbon dioxide is the most abundant greenhouse gas in the atmosphere.

Changes in surface albedo can affect the Earth's temperature by altering the amount of solar energy absorbed or reflected.

Feedback loops can either stabilize or destabilize climate systems, influencing temperature and weather patterns.

An example is the melting of ice; as ice melts, less sunlight is reflected, leading to further warming and more ice melt.