What does the term "fire plume" refer to?

The term "fire plume" specifically refers to the movement and behavior of hot gases produced by a fire as they rise into the atmosphere. This phenomenon occurs due to the heat generated by the combustion process, which causes the surrounding air to become less dense. As these hot gases rise, they create a plume that can impact both the spread of fire and the behavior of smoke and heat in the environment. Understanding the dynamics of a fire plume is crucial for fire investigators, as it can provide insights into the fire's characteristics, potential for spread, and overall impact on structures and safety.