A new South American network to study the atmospheric electric field and its variations related to geophysical phenomena

J. Tacza, J. P. Raulin, E. Macotela, E. Norabuena, G. Fernandez, E. Correia, M. J. Rycroft, R. G. Harrison

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30 Citations (SciVal)


In this paper we present the capability of a new network of field mill sensors to monitor the atmospheric electric field at various locations in South America; we also show some early results. The main objective of the new network is to obtain the characteristic Universal Time diurnal curve of the atmospheric electric field in fair weather, known as the Carnegie curve. The Carnegie curve is closely related to the current sources flowing in the Global Atmospheric Electric Circuit so that another goal is the study of this relationship on various time scales (transient/monthly/seasonal/annual). Also, by operating this new network, we may also study departures of the Carnegie curve from its long term average value related to various solar, geophysical and atmospheric phenomena such as the solar cycle, solar flares and energetic charged particles, galactic cosmic rays, seismic activity and specific meteorological events. We then expect to have a better understanding of the influence of these phenomena on the Global Atmospheric Electric Circuit and its time-varying behavior.

Original languageEnglish
Pages (from-to)70-79
Number of pages10
JournalJournal of Atmospheric and Solar-Terrestrial Physics
Publication statusPublished - 6 Sept 2014

Bibliographical note

Funding Information:
JPR, EM and JT thank the CNPq funding agency (Proc. 305655/2010-8 , 482000/2011-2 , 130082/2013-9 and 130083/2013-5 ). Authors are grateful to two anonymous reviewers for their constructive comments and suggestions, which helped to improve the quality of the paper.

Publisher Copyright:
© 2014.


  • Carnegie curve
  • Global Atmospheric Electric Circuit
  • Potential gradient
  • Temporal variations

ASJC Scopus subject areas

  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science


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