Some Characteristics of Aerially-Released AgI Plumes in Alberta


  • James A Heimbach University of North Carolina Asheville, NC


Two cases of tracing aerially-released plumes using a Langer ice nucleus detector are described. In one, plumes from 2AgI-NH4I-acetone, NEI-TB1 wing flares and NEI-TB1 drop flare sources are compared. For the other, a plume from a single seeding pass is traced for three hours and seven minutes. The results show the acetone source to be very efficient, producing as many ice nuclei as the NEI-TB1 wing flares (effective at -20°C). The drop flare curtain was difficult to detect. The linear seeding mode was found to treat large volumes and the spread of the plumes was consistent with current understanding of transport and dispersion.




Scientific Papers