Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/24645

Title: Saharan dust electrification perceived by a triangle of atmospheric electricity stations in Southern Portugal
Authors: Silva, Hugo
Lopes, Francisco
Pereira, Sergio
Nicoll, Kery
Barbosa, Susana
Conceição, Ricardo
Neves, Samuel
Harrison, Giles
Collares-Pereira, Manuel
Keywords: Desert dust electrification
Atmospheric electric potential gradient
Sensors array
Wavelet analysis
Issue Date: 2016
Publisher: ELSEVIER
Abstract: Atmospheric Electric Potential Gradient (PG) measurements were carried out in three sites forming a triangular array in Southern Portugal. The campaign was performed during the summer, characterized by Saharan dust outbreaks; 16the17th July 2014 dust event is considered. Short time-scale oscillations of the PG at two of the stations and a mid time-scale suppression of the PG in the three stations are found. Results are interpreted as evidencing long-range dust electrification; attributed to the air-Earth electrical current creating a bipolar charge distribution inside of the dust layer. The relevance of using arrays of sensors, instead of single sited, is highlighted.
URI: https://ac.els-cdn.com/S0304388616302303/1-s2.0-S0304388616302303-main.pdf?_tid=04e4b724-4b2a-4ea9-922e-a737665d233f&acdnat=1549890310_054a108b06cf84edf6c34d72ac6909d5
http://hdl.handle.net/10174/24645
Type: article
Appears in Collections:CGE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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