Title :
Lightning flash properties derived from Lightning Mapping Array data
Author :
MontanyaÌ€, Joan ; van der Velde, Oscar ; Sola, GloÌ€ria ; FabroÌ, Feran ; Romero, Daniel ; Pineda, Nicolau ; Argemi, Oriol
Author_Institution :
Dept. of Electr. Eng., Univ. Politec. de Catalunya, Terrassa, Spain
Abstract :
In this paper size and duration of lightning flashes are examined. Data from the Ebro Valley Laboratory Lightning Mapping Array is used as reference. Additional data from the VLF/LF LINET network and meteorological radar is included. In order to simplify the complex geometry of a lightning flash, each flash is described by a confidence ellipse fitting most of the detected sources. The flash length is represented by the major axis of the ellipse. The analysis of 1047 flashes in a set of different type of thunderstorms results in a median flash length of ~20 km with a median duration of ~0.4 s. The results presented here, besides characterizing the storm activity, provide valuable information in order to improve the stroke grouping criteria in the flash algorithm, lightning flash density calculations and lightning warning procedures.
Keywords :
lightning protection; meteorological radar; thunderstorms; Ebro Valley Laboratory lightning mapping array; VLF/LF LINET network; flash algorithm; lightning flash density calculations; lightning flash properties; lightning flashes; lightning mapping array data; lightning warning procedures; storm activity; stroke grouping criteria; thunderstorms; Alarm systems; Lead; Lightning; Shape; Spatial extension; lightning; lightning duration; lightning mapping; lightning size;
Conference_Titel :
Lightning Protection (ICLP), 2014 International Conference o
Conference_Location :
Shanghai
DOI :
10.1109/ICLP.2014.6973264
