Publication Date:
2019-07-13
Description:
Lightning is being studied relative to storm structure using a VHF space-time discharge mapping system, radar, a cloud-to-ground flash locator, acoustic reconstruction of thunder, and other instrumentation. The horizontal discharge processes within the cloud generally propagate at speeds of 10,000-100,000 m/s. Horizontal extents of lightning were found up to 90 km. In an analysis of a limited number of flashes, lightning occurred in or near regions of high cyclonic shear. Positive cloud-to-ground flashes have been observed emanating from several identifiable regions of severe storms. Lightning echoes observed with 10-cm radar generally are 10-25 dB greater than the largest precipitation echo in the storm.
Keywords:
METEOROLOGY AND CLIMATOLOGY
Type:
AIAA PAPER 81-0080
,
Aerospace Sciences Meeting; Jan 12, 1981 - Jan 15, 1981; St. Louis, MO
Format:
text
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