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Authors: Tozzi, R.*
Pezzopane, M.*
De Michelis, P.*
Piersanti, M.*
Title: Applying a curl-B technique to Swarm vector data to estimate nighttime F region current intensities
Title of journal: Geophysical Research Letters
Series/Report no.: 15/42 (2015)
Publisher: American Geophysical Union
Issue Date: 10-Aug-2015
DOI: 10.1002/2015GL064841
Keywords: Swarm magnetic data
current density
F region
Abstract: The innovative geometry of European Space Agency Swarm constellation opens the way for new investigations based on magnetic data. Since the knowledge of a vector field on two spherical surfaces allows calculating its curl, we propose a new technique to estimate the curl of the ionospheric magnetic field measured by Swarm satellites A and B, orbiting the Earth at two different altitudes from March to September 2014. Using this technique, we mapped the amplitude of the radial, meridional, and zonal components and of total intensity of the ionospheric current density at the satellite's altitudes, i.e., the F region of the ionosphere, during two local nighttime intervals: before and after midnight. Most of the obtained results are consistent with some of the known features of nighttime F region currents; others need further investigation. The proposed technique could contribute in selecting magnetic data with minimum contamination from nighttime F region electric currents for magnetic modeling purposes.
Appears in Collections:05.01.01. Data processing
04.05.08. Instruments and techniques
01.02.99. General or miscellaneous
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