Which type of airmass is typically characterized by high humidity?

The type of airmass that is characterized by high humidity is the maritime tropical. This airmass originates over warm ocean waters, where it picks up moisture and warmth. As it moves inland, it often brings humid conditions, particularly in the summer months, influencing weather patterns with increased precipitation and cloud cover.

Maritime tropical airmasses are typically warm and humid, making them a significant contributor to weather systems, especially in coastal and southeastern regions. Understanding this airmass helps predict occurrences of thunderstorms and heavy rainfall when it interacts with other airmasses.

In contrast, the other airmasses listed possess different characteristics. Continental polar, for instance, is known for its cold and dry conditions, as it originates over land in polar regions. Continental tropical airmasses are also dry but warm, originating over land in tropical regions. Maritime polar, while it does bring moisture, is generally cooler and may not have the high humidity associated with warm, tropical air. This differentiation in origins and characteristics is crucial for weather forecasting and climate studies.