What issues may arise when a temperature inversion exists at an airport?

When a temperature inversion occurs at an airport, it can lead to reduced visibility due to fog and the potential for windshear. A temperature inversion happens when a layer of warm air traps cooler air near the ground, which can create a stable atmosphere. This stability can lead to the development of fog, especially in the presence of moisture, as the cool air can saturate and obscure visibility.

Inversions can also contribute to the presence of windshear, which is a sudden change in wind speed or direction over a short distance. This is particularly relevant during takeoff and landing phases of flight. Pilots need to be aware of these conditions as they can impact aircraft performance and safety.

The other options suggest conditions that are typically not associated with temperature inversions. For instance, increased visibility and clear skies would be more characteristic of stable atmospheric conditions without inversions, while higher temperatures alone do not accurately describe the implications of inversions related to fog and windshear. Increased turbulence and severe storms also contradict the stable nature of an inversion layer. Thus, the identification of reduced visibility and the possibility of windshear captures the essence of the challenges presented during such weather phenomena at airports.