@inproceedings{ea3683ba606d406eaf4152ef8eda6caf,
title = "Influence of Solar Rotation Influence on Ionospheric/Thermospheric Parameters: Modeling and Observations for Case Studies",
abstract = "We investigated the effect of 27 day solar rotation on the thermosphere-ionosphere system at different latitudes using both model results and multi-instrumental observation data. Considered ionospheric stations (ionosondes, GPS receivers, ISR radars) were located from the middle to high latitudes in Northern hemisphere. We analyzed also TIMED/GUVI variations of the O/N2 ratio in the thermosphere. Three different temporal periods were considered: December 2012-January 2013; January 2014; June - July 2014. The Global Self-consistent Model of the Thermosphere, Ionosphere, and Protonosphere (GSM TIP) were used for interpretation of coupled processes in the thermosphere-ionosphere system during one solar rotation cycle. There is a distinct response of daytime ionospheric electron density to the 27-day variation in solar flux (F10.7). Using comparative and correlative analysis we revealed a delay in variation of modeled daytime critical frequency (foF2) and total electron content (TEC) with respect to F10.7 variation. According to model results variations in O/N2 ratio seems to be the main possible mechanism for this delay. Some model/data disagreement was discussed in context of importance of atmosphere-ionosphere coupling and geomagnetic control of ionospheric variability. Seasonal changes and difference between 27-day variation in foF2 and TEC were discussed.",
author = "Klimenko, {M. V.} and Ratovsky, {K. G.} and D. Themens and Yasukevich, {A. S.} and Klimenko, {V. V.}",
year = "2019",
month = jun,
doi = "10.1109/PIERS-Spring46901.2019.9017784",
language = "English",
series = "Progress in Electromagnetics Research Symposium",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
pages = "3469--3473",
booktitle = "2019 PhotonIcs and Electromagnetics Research Symposium - Spring, PIERS-Spring 2019 - Proceedings",
note = "2019 PhotonIcs and Electromagnetics Research Symposium - Spring, PIERS-Spring 2019 ; Conference date: 17-06-2019 Through 20-06-2019",
}