Abstract
For the first time, acoustic signatures from rocket-triggered lightning are measured by a 15 m long, one-dimensional microphone array consisting of 16 receivers, situated 79 m from the lightning channel. Measurements were taken at the International Center for Lightning Research and Testing (ICLRT) in Camp Blanding, FL, during the summer of 2014. We describe the experimental setup and report on the first observations obtained to date. We also discuss the implications of these novel measurements on the thunder initiation process and its energy budget during lightning discharges. Challenges of obtaining measurements in these harsh ambient conditions and their countermeasures will also be discussed.
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