In Situ Experimental Study of Cloud-Precipitation Interference by Low-Frequency Acoustic Waves

Since acoustic agglomeration is an effective pre-treatment technique for removing fine particles, it can be considered as a potential technology applications in aerosol pollution control, industrial dust and mist removal, cloud precipitation interference. In this study, the cloud-precipitation interference effect was evaluated situ based on multi-dimensional multi-scale monitoring system. The variations spatial temporal distribution of rainfall near surface characteristics droplets air were investigated. results indicate that strong low-frequency waves had significant impact macro-characteristics clouds, microphysical structure rain near-surface precipitation, various microwave parameters. terms physical structure, cloud’s base height decreased significantly upon opening device, while de-agglomeration raindrops dynamic equilibrium. When sound generator on, particle concentration at sampling attitude 500?1700 m proportion particles with diameters 1–1.5 mm (by 1–5 ln [1/m3·mm]). contrast, increased by 1–3 [1/m3·mm] below 400 m. Moreover, during interference, reflectivity factor surged 2.71 dBZ within 1200 operation centre. Overall, distributions rates cumulative 5 km uneven influenced local terrain background winds.