Trends in the Critical Frequency of the F2 Layer during the Recent Decade

A. D. Danilov; Данилов А. Д.; N. A. Berbeneva; Бербенева Н. А.

doi:10.31857/S0016794022600697

Trends in the Critical Frequency of the F2 Layer during the Recent Decade

作者: Danilov A.D.¹, Berbeneva N.A.²
隶属关系:
1. Institute of Applied Geophysics
2. Department of Physics, Moscow State University
期: 卷 63, 编号 2 (2023)
页面: 139-146
栏目: Articles
URL: https://ter-arkhiv.ru/0016-7940/article/view/651020
DOI: https://doi.org/10.31857/S0016794022600697
EDN: https://elibrary.ru/DKXZFB
ID: 651020

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详细
作者简介
参考
补充文件
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详细

Trends in the F2-layer critical frequency foF2 are calculated based on the vertical sounding data at
Juliusruh station over a period of 1996–2022. Four solar activity indices: Ly-α, MgII, F10.7mon, and Rz were
used. The conclusion drawn previously is confirmed: seasonal (stronger in winter than in summer) and diurnal
(stronger in the daytime than at night) variations exist in the foF2 negative trends. It is shown that the
results for the first three indices agree very well, whereas the results using Rz provide slightly different results.
It has been found that during the recent 5–7 years, the maximum (winter, daytime) negative trends in foF2
became stronger than for the entire considered interval by a factor of 2–3

作者简介

A. Danilov

Institute of Applied Geophysics

Email: adanilov99@mail.ru
Moscow, 129128 Russia

N. Berbeneva

Department of Physics, Moscow State University

编辑信件的主要联系方式.
Email: adanilov99@mail.ru
Moscow, 119991 Russia

参考

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