What is the main distinction between warm and cold occlusions?

The main distinction between warm and cold occlusions lies in the interaction between air masses. In a warm occlusion, warm air is indeed lifted over cooler air. This typically occurs when a warm front overtakes a cold front, causing the warm air mass to rise aloft. This lifting can lead to cloud formation and precipitation as the warm air cools and condenses.

Understanding this concept is crucial because it helps in predicting weather patterns associated with occlusions. The characteristics of the air masses involved dictate how they will behave and interact, affecting the weather conditions.

The other options do not accurately describe the mechanics or characteristics of warm and cold occlusions. For instance, cold occlusions typically involve cold air pushing beneath warm air, which is not correctly represented in any of the other statements. Understanding these distinctions is essential for meteorological assessments and forecasts.