Global Electric Circuit research at Graciosa Island (ENA-ARM facility): First year of measurements and ENSO influences

Francis M. Lopes, Hugo Gonçalves Silva, Alec J. Bennett, A. Heitor Reis

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Around 100 years after Carnegie expeditions discovered the Global Electric Circuit, a measuring campaign started at ARM, Eastern North Atlantic facility (Graciosa Island, Azores), meant for the first time to resemble the conditions in which those took place. Here, the first year of measurements (starting April 2015) are analysed and initial results are discussed. The Potential Gradient findings show a deviation from the Carnegie Curves towards inland measurements as a consequence of local aerosol and ion load. The Potential Gradient maxima evolves from 18 UTC (spring/autumn) to 20 UTC (summer), being consistent with the strong 2015 El Niño.

Original languageEnglish
Pages (from-to)203-211
Number of pages9
JournalJournal of Electrostatics
Volume87
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • Atmospheric electrical field
  • El Niño-Southern Oscillation (ENSO)
  • Global Electrical Circuit
  • Marine aerosols and ions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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