Long-term trends in the ionospheric response to solar extreme-ultraviolet variations

Vaishnav, Rajesh; Jacobi, Christoph; Berdermann, Jens

doi:https://doi.org/10.5194/angeo-37-1141-2019

Articles | Volume 37, issue 6

https://doi.org/10.5194/angeo-37-1141-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Vertical coupling in the atmosphere–ionosphere system

https://doi.org/10.5194/angeo-37-1141-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 37, issue 6

Regular paper

|

10 Dec 2019

Regular paper |

| 10 Dec 2019

Long-term trends in the ionospheric response to solar extreme-ultraviolet variations

Rajesh Vaishnav, Christoph Jacobi, and Jens Berdermann

Data sets

LASP Interactive Solar Irradiance Data Center LASP http://lasp.colorado.edu/lisird/data/noaa_radio_flux/

Bremen composite Mg II index IUP http://www.iup.uni-bremen.de/UVSAT/Datasets/mgii

SSI and Proxy Datasets SOLID http://projects.pmodwrc.ch/solid/

Short summary

We investigate the ionospheric response to the temporal and spatial dynamics of the solar activity using total electron content (TEC) maps and multiple solar proxies. The maximum correlation at a 16–32-d timescale is observed between the He-II, Mg-II, and F30 with respect to global mean TEC, with an effective time delay of about 1 d. The most suitable proxy to represent the solar activity at the timescales of 16–32 d and 32–64 d is He-II.