Additionally, some pilot balloons carry radiosondes which measure barometric pressure, temperature and humidity data. Drifting tetroons indicate approximate wind trajectories that support insect migratory flights. Estimated migratory pathways can identify strategic locations for intensive insect pest surveys and suppression activities. Positive identification of migrating insects is needed to verify radar entomological echoes and add to basic knowledge of pest movements. Blacklight insect traps attached to vehicle-tracked tetroons are used to capture insects during migratory flight.
Blacklight traps can attract males and females of numerous insect species.
Balloon-borne blacklight traps can keep the captured insects alive and in good condition for later identification and analysis, unlike most aircraft net sampling. When attached to drifting tetroons, blacklight traps remain longer within the dispersing cluster of insects which should increase trap efficacy. Pheromone traps, feeding attractant traps, suction traps, and insect nets will also be tested using free-flying and tethered balloons. The radars operate continuously day and night. A parabolic antenna creates a 1 radar beam width.