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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
Collares Pereira, Manuel
Keywords: Atmospheric electric potential gradient
Planetary boundary-layer backscatter
Space-charge dynamics
Issue Date: Sep-2017
Publisher: Springer
Citation: Conceição, R., H. G. Silva, A. Bennett, R. Salgado, D. Bortoli, M. J. Costa, M. Collares Pereira, 2017, High Frequency response of the Atmospheric Electric Potential Gradient under Strong and Dry Boundary Layer Convection. Boundary-Layer Meteorol. 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., solarmodulation) 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:FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
CGE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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