Convective currents typically develop over:

Convective currents typically develop over pavement and sand surfaces due to their properties of retaining and rapidly releasing heat. During the day, these surfaces absorb solar radiation and warm up more quickly than other types of surfaces, such as water or grass. As the surface heats the air directly above it, the air becomes less dense and rises, creating an upward current known as convection.

In this context, pavement and sand are particularly effective at generating these currents because they have high heat absorption rates and can create significant temperature gradients, especially compared to cooler, moister areas. This differential heating leads to the development of convective currents that can impact the flight of an unmanned aircraft.

Water bodies, while they can influence local weather patterns, primarily moderate temperature changes because water has a high specific heat capacity. Cloudy environments tend to prevent the intense heating required to generate strong convection due to the insulation effect of clouds. Areas of consistent elevation may have varied temperatures but do not specifically foster convective currents in the same way as heated, flat surfaces do. Thus, the conditions over pavement and sand surfaces are most conducive to the formation of convective currents.