Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 40, issue 3
Articles | Volume 40, issue 3
https://doi.org/10.5194/angeo-40-259-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/angeo-40-259-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 40, issue 3
Regular paper
 | 
03 May 2022
Regular paper |  | 03 May 2022

Responses of intermediate layers to geomagnetic activity during the 2009 deep solar minimum over the Brazilian low-latitude sector

Ângela M. Santos, Christiano G. M. Brum, Inez S. Batista, José H. A. Sobral, Mangalathayil A. Abdu, and Jonas R. Souza

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Short summary
Using the Digisonde data this paper shows that the small variation in the geomagnetic activity during low solar activity can affect both the parameter of height and the frequency of the intermediate layer (ILs) over the low-latitude Brazilian sector. The most expressive responses of the ILs to geomagnetic activity were observed during the summer when the height of the ILs suffered a significant decrease with the increase of the magnetic activity magnetic in the first hours of the day.
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From the Sun to the Earth's...