What type of air mass is moist and warm?

The correct type of air mass that is moist and warm is maritime tropical. This air mass originates over warm ocean waters, which allows it to absorb moisture. As a result, maritime tropical air is characterized by high humidity levels and warm temperatures, making it a significant contributor to weather patterns, especially in tropical and subtropical regions. When this air mass moves over land, it often leads to precipitation due to the moisture it carries, particularly when it encounters cooler air masses or geographical features like mountains.

Continental polar, maritime polar, and continental tropical air masses have different characteristics. Continental polar is dry and cold, maritime polar is cool and moist but not warm, and continental tropical is warm but dry. Understanding the origins and temperatures of these different air masses helps clarify why maritime tropical is the only one that fits the description of being both moist and warm.