Which types of air masses are typically observed in Canada during summer?

The correct response indicates that during the summer months in Canada, the types of air masses commonly observed include maritime, polar, and maritime tropical.

Maritime air masses originate over large bodies of water, such as oceans, and are characterized by higher humidity levels. In the summer, these air masses can bring warm, moist conditions, which contribute to the development of thunderstorms and precipitation. Within Canada, the maritime polar air mass typically comes from the North Pacific and can lead to cooler and more stable weather patterns, especially in coastal regions.

Maritime tropical air masses, on the other hand, develop over warm ocean waters and bring warm, humid air. These air masses are significant during the summer as they can cause warm fronts and contribute to more unstable weather conditions, leading to the development of severe thunderstorms and heavy rainfall.

This combination of maritime polar and maritime tropical air masses is crucial in understanding the summer weather patterns in Canada. The presence of these air masses typically leads to a mix of warm, humid conditions and cooler, stable weather, influencing local climates and weather phenomena throughout the country.