Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 34, issue 4
Articles | Volume 34, issue 4
https://doi.org/10.5194/angeo-34-485-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-34-485-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 34, issue 4
Regular paper
 | 
02 May 2016
Regular paper |  | 02 May 2016

Extreme value analysis of the time derivative of the horizontal magnetic field and computed electric field

Peter Wintoft, Ari Viljanen, and Magnus Wik

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Short summary
Extreme value analysis has been applied to 1-minute-resolution magnetic fields and computed electric fields over Europe. We find that on average the largest disturbances of the fields are observed close to the auroral oval, as expected. However, the analysis indicates that as we move south from Scandinavia to northern continental Europe the distribution becomes more extreme. This could be due to that strong storms regularly occur at high latitudes, while the extreme storms push the oval south.
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