Global Climate Model (GCM)

A Global Climate Model (GCM) is a complex computer program used by scientists to simulate Earth's climate systems. It incorporates physical laws, such as those governing heat, air, and water movement, to predict how natural and human activities (like greenhouse gas emissions) affect our climate over time. By analyzing various scenarios, GCMs help us understand potential climate changes, such as temperature rise or shifting weather patterns, which are crucial for planning and mitigating the impacts of climate change on ecosystems and human societies.