Drone Pilot Practice Exam

What can be expected when a temperature inversion occurs?

1. Clear skies and low humidity

2. Increased turbulence

3. Smog, poor visibility, and smooth flying weather

4. High winds and severe weather

The correct answer is: Smog, poor visibility, and smooth flying weather

When a temperature inversion occurs, it is characterized by a layer of warm air trapping cooler air close to the ground. This situation can lead to the accumulation of pollutants, creating smog and poor visibility in the lower atmosphere, particularly in urban areas where pollution is more common. The smooth airflow associated with temperature inversions can lead to relatively stable flying conditions because the turbulent air is largely trapped below the warm layer. Therefore, pilots can expect a smoother flight experience when operating in or near these conditions. This phenomenon typically results in the weather being more stable, as the inversion layer acts as a cap on vertical air movement. While it might not always lead to perfectly clear skies, it often does prevent the usual daytime thermals and turbulence, making flying smoother overall. Consequently, the adverse conditions associated with inversions, like reduced visibility due to smog, accompany the smooth flying weather, solidifying why this choice accurately reflects the expected outcomes during a temperature inversion.