The Influence of Model Hydrometeors on Electromagnetic Radiation of Discharge Phenomena in an Artificial Thundercloud

Abstract

Results of experimental investigations of an influence of the model hydrometeors on an electromagnetic radiation of the discharge phenomena initiated in an artificial thundercloud have been presented. It was established that the characteristics of an electromagnetic radiation of the cloud discharges initiated by the model hydrometeor groups in an artificial thundercloud depend on the location of the cells of a different polarity relative to the ground, as well as on the place of an introduction of the large hydrometeor arrays into the gap between the cells. It was determined that the character of the registered electromagnetic radiation of the discharge phenomena initiated by the model hydrometeor groups in the artificial thundercloud was close to the character of the powerful bipolar impulses of very high frequency registered for the cloud discharges and during the beginning stage of a downward lightning formation. It was proposed that the arrays of a large hail in a thundercloud could provoke the discharge phenomena significantly modifying the characteristics of the electromagnetic radiation of the cloud discharges. It was experimentally shown that the introduction into the artificial thundercloud of the model hydrometeor groups combined in a common system by the dielectric string can sufficiently decrease a power and the duration of the impulses of an electromagnetic radiation of the initiating discharge phenomena.