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Video: The asymmetric geospace as displayed during the geomagnetic storm on August 17, 2001

Østgaard, Nikolai; Reistad, Jone P.; Tenfjord, Paul; Laundal, Karl M.; Rexer, Theresa; Haaland, Stein E.; Snekvik, Kristian; Hesse, Michael; Milan, Steve E.; Ohma, Anders

Measurements from multiple instruments showing large north-south asymmetries in polar geospace during a geomagnetic storm on 17 August 2001. This video is published with the paper "The asymmetric geospace as displayed during the geomagnetic storm on August 17, 2001", by Østgaard et al., at https://www.ann-geophys-discuss.net/angeo-2018-65/. The paper is currently in the first phase of review, open for discussion.

The observations:
UV aurora in the north, in three different wavelength, from the IMAGE FUV instruments (left)

UV aurora in the south, observed with the VIS Earth camera on the Polar satellite (right). The images from the north and south are simultaneous, within ~1 min.

Equivalent currents from SuperMAG ground magnetometers are shown as red pins in the northern hemisphere

Electron energy flux measured with the NOAA POES satellites, and the DMSP satellites, is shown as pink bars.

Field-aligned currents, derived with in-situ magnetometer measurements on the CHAMP satellite are shown in red (up) and blue (down) colour.

Convection measurements from SSIES on the DMSP satellites are shown as green bars

The locations of SuperDARN backscatter are shown as green dots. The line-of-sight measurements are not shown in the video, but used in the analysis in the paper.

Time series of magnetic indices and interplanetary magnetic field components are shown in the upper right corner.

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