Lightning observations with the Strato-Tropospheric UHF and VHF radars at Arecibo, Puerto Rico

Observations were carried out at National Astronomy and Ionospheric Center (NAIC) in Puerto Rico with a dual-frequency (46.8MHz/430MHz) Strato-Tropospheric radar associated with ground-based precipitation and electrostatic field measurements. This experimental set-up is devoted to provide wind measu...

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Bibliographic Details
Published in:Atmospheric research 2005-07, Vol.76 (1), p.481-492
Main Authors: Petitdidier, M., Laroche, P.
Format: Article
Language:English
Subjects:
Atmospheric electricity
Atmospherics
Channels
Clear air turbulence
Earth, ocean, space
Exact sciences and technology
External geophysics
Lightning
Lightning flashes
Meteorology
Radar
Thunderstorm
UHF
VHF
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Summary:Observations were carried out at National Astronomy and Ionospheric Center (NAIC) in Puerto Rico with a dual-frequency (46.8MHz/430MHz) Strato-Tropospheric radar associated with ground-based precipitation and electrostatic field measurements. This experimental set-up is devoted to provide wind measurements and detection of clear air turbulence. During a thunderstorm event, VHF-UHF radar receivers detected wide frequency band radiation emitted by lightning flashes. We present in this paper observations of a specific storm for which lightning radiation and ionized lightning channel were fortuitously and simultaneously detected. A bi-level structure of the lightning flash channel is observed and is consistent with observations obtained previously by other authors with VHF lightning mapper.
ISSN:0169-8095
1873-2895
DOI:10.1016/j.atmosres.2004.11.037