What kind of surface air conditions are found over northern regions during the summer?

• A. Cold and snowy
• B. Warm and humid
• C. Strong winds
• D. Clear and dry

Answer: (B)

The correct answer is warm and humid because northern regions, particularly those closer to significant bodies of water or in areas with abundant summer sunlight, typically experience warmer temperatures during the summer months. The longer daylight hours and increased solar radiation contribute to warming the air and surface temperatures.

As this warmth interacts with moisture from lakes, rivers, and seas, it can lead to increased humidity in the air. For example, in areas like the Great Lakes in the United States or coastal regions in Canada, the interaction of warm air with cooler water results in higher humidity levels, creating a warm and humid environment that can influence weather patterns and precipitation.

Cold and snowy conditions do not accurately represent northern regions in the summer, as these characteristics are more associated with winter months. Strong winds can occur in many conditions but are not a defining characteristic of summer air mass behavior. Clear and dry conditions can exist, but they are less common; summer conditions in northern areas often include warmth and humidity due to the seasonal heat and moisture sources.