Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 34, issue 11
Articles | Volume 34, issue 11
https://doi.org/10.5194/angeo-34-961-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-34-961-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 34, issue 11
Regular paper
 | 
07 Nov 2016
Regular paper |  | 07 Nov 2016

Seasonal variations and north–south asymmetries in polar wind outflow due to solar illumination

Lukas Maes, Romain Maggiolo, and Johan De Keyser

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Short summary
Ion outflow from the ionospheric regions at the highest latitudes is mainly driven by solar illumination. It is an important factor affecting atmospheric escape and space weather. But this region rotates into and out of the sunlight on a daily and seasonal basis. This creates daily and seasonal variations in the outflow, even with both hemispheres combined. The north–south asymmetry in Earth's magnetic field causes extra variations and asymmetries. This was studied with a simple empirical model.
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