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Title: High-Frequency Response of the Atmospheric Electric Potential Gradient Under Strong and Dry Boundary-Layer Convection
Authors: Conceição, Ricardo
Silva, Hugo
Bennett, Alec
Salgado, Rui
Bortoli, Daniele
Costa, Maria João
Colares-Pereira, Manueal
Keywords: Atmospheric electric potential gradient
Planetary boundary-layer backscatter
Space-charge dynamics
Issue Date: Jan-2018
Publisher: Springer Nature
Citation: 7. Conceiçao, R., H. G. Silva, A. Bennett, R. Salgado, D. Bortoli, M. J. Costa, and M. Collares Pereira, 2018: High-frequency response of the atmospheric electric potential gradient under strong and dry boundary-layer convection, Bound.-Layer. Meteor. 166,69-81, doi: 10.1007/s10546-017-0298-2
Abstract: The spectral response of atmospheric electric potential gradient gives important information about phenomena affecting this gradient at characteristic time scales ranging from years (e.g., solar modulation) to fractions of a second (e.g., turbulence). While long-term time scales have been exhaustively explored, short-term scales have received less attention. At such frequencies, space-charge transport inside the planetary boundary layer becomes a sizeable contribution to the potential gradient variability. For the first time, co-located (Évora, Portugal) measurements of boundary-layer backscatter profiles and the 100-Hz potential gradient are reported. Five campaign days are analyzed, providing evidence for a relation between high-frequency response of the potential gradient and strong dry convection.
Type: article
Appears in Collections:ICT - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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