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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 Gonçalves; Bennett, Alec; Salgado, Rui; Bortoli, Daniele; Costa, Maria João; Collares Pereira, Manuel
- 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.
- Subjects
CONVECTION (Meteorology); ATMOSPHERIC boundary layer; BACKSCATTERING; ATMOSPHERIC electricity; SPACE charge
- Publication
Boundary-Layer Meteorology, 2018, Vol 166, Issue 1, p69
- ISSN
0006-8314
- Publication type
Article
- DOI
10.1007/s10546-017-0298-2