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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 21, issue 5
Ann. Geophys., 21, 1209–1213, 2003
https://doi.org/10.5194/angeo-21-1209-2003
© Author(s) 2003. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 21, 1209–1213, 2003
https://doi.org/10.5194/angeo-21-1209-2003
© Author(s) 2003. This work is distributed under
the Creative Commons Attribution 3.0 License.

  31 May 2003

31 May 2003

About the direction of motion, polarity and multiplicity of lightning flashes hitting towers: a comparative analysis of data gathered in Brazil and Switzerland

O. Pinto Jr.1, D. G. Guedes1, M. M. F. Saba1, I. R. C. A. Pinto1, and M. Lacerda2 O. Pinto Jr. et al.
  • 1Instituto Nacional de Pesquisas Espaciais-INPE-São José dos campos, São Paulo, Brazil
  • 2Universidade Federal do Mato Grosso, Cuibá, Mato Grosso, MT, Brazil

Abstract. After 17 years of research at Morro do Cachimbo station (MC) in Brazil, 51 flashes with strokes higher than 2 kA were registered. The data are compared with similar data obtained from the Mount San Salvatore station (SS), Switzerland, in terms of the incidence of downward or upward flashes, polarity, and flash multiplicity. The comparison indicates that at MC the percentage of upward flashes and the multiplicity of negative downward flashes are higher than at SS, while the percentage of downward positive flashes is lower. 

Key words. Meteorology and atmospheric dynamics (atmospheric electricity; lightning; instruments and techniques)

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