Which phenomenon is likely to increase near gust front convergence zones?

The phenomenon most likely to increase near gust front convergence zones is the reflectivity associated with insects. Gust fronts, which are boundaries created by the downdraft of a thunderstorm hitting the ground and spreading outward, often lead to changes in local airflow patterns. As warm, humid air is drawn into these convergence zones, it can create an environment conducive to insect activity.

In areas where gust fronts occur, the turbulent boundary can enhance the updrafts that carry insects upwards, resulting in increased insect population reflectivity detectable by radar. This is particularly relevant in warmer seasons when insects are more prevalent, and the shifting wind patterns can concentrate their presence, making them more easily identifiable on radar.

Precipitation intensity tends to be more directly associated with organized storm systems than with gust front convergence zones alone, while clear air reflectivity is not typically significant in these contexts since it usually pertains to higher altitudes or non-precipitating phenomena. Wind shear, while related to storm dynamics, is a different concept and does not specifically correlate to the concentration of insect reflectivity near gust fronts.