Articles | Volume 38, issue 6
https://doi.org/10.5194/angeo-38-1159-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-38-1159-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Regular paper
| 
03 Nov 2020
Regular paper |
| 03 Nov 2020
| 03 Nov 2020
High-latitude crochet: solar-flare-induced magnetic disturbance independent from low-latitude crochet
Swedish Institute of Space Physics (IRF), Kiruna, Sweden
Magnar G. Johnsen
Tromsø Geophysical Observatory (TGO), UiT The Arctic University of Norway, Tromsø, Norway
Carl-Fredrik Enell
EISCAT Scientific Association, Kiruna, Sweden
Anders Tjulin
EISCAT Scientific Association, Kiruna, Sweden
Anna Willer
National Space Institute, Technical University of Denmark (DTU Space), Kongens Lyngby, Denmark
Dmitry A. Sormakov
Arctic and Antarctic Research Institute (AARI), St Petersburg, Russia
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Short summary
The paper reports a new finding on space weather effects at around 70–75 ° geographic latitudes. We found that X flares cause an unexpectedly strong ionospheric current driven by solar flares. The effect is as large as a substorm that is known to cause strong auroras and may enhance ongoing substorms. However, it has been overlooked in the past due to the narrow latitudinal range at high latitudes. Since severe magnetic storms often occur with X flares, this may cause geomagnetic hazards.
The paper reports a new finding on space weather effects at around 70–75 ° geographic latitudes....
