Abstract Modern society replies on the ionosphere for technology such as radio navigation and telecommunications. However, this is not a static environment and its characteristics can be affected by solar phenomena such as coronal mass ejections (CMEs) and high-speed solar winds. In this paper we present a set of space weather parameters (e.g. type and velocity of CMEs, X-ray flux, the velocity of high-speed solar wind) that allow to identify the dominant physical connections between ionospheric dynamics and these two solar phenomena. The study uses vertical and oblique sounding data of the ionosphere obtained during several space weather events occurring in solar cycle 21, 22 and 24. We propose and discuss the advantage of a new ionospheric index for defining how CMEs and high speed solar streams, as global events of solar activity, influence the values of the parameters used to characterize the ionosphere.

中文翻译：

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空间天气服务的新电离层指数

摘要 现代社会依靠电离层来实现无线电导航和电信等技术。然而，这不是静态环境，其特性会受到日冕物质抛射 (CME) 和高速太阳风等太阳现象的影响。在本文中，我们提出了一组空间天气参数（例如 CME 的类型和速度、X 射线通量、高速太阳风的速度），可以确定电离层动力学与这两种太阳现象之间的主要物理联系。该研究使用了在太阳活动周期 21、22 和 24 发生的几次空间天气事件期间获得的电离层垂直和倾斜探测数据。我们提出并讨论了新的电离层指数的优势，用于定义 CME 和高速太阳流如何作为全球太阳活动事件，