The present work shows the preliminary results from the analysis for developing an ionospheric scale index map based on the Disturbance Ionosphere indeX (DIX). This index aims to target all the different user groups affected by ionospheric disturbances, for example, the navigation, positioning, and satellite communication users, in a simple and straightforward approach. Therefore, we used the vertical total electron content (VTEC) over South America to calculate the total electron content (TEC) maps covering latitudes from 60°S to 20°N and longitudes from 90°W to 30°W, with 0.5° × 0.5° resolution. Afterward, the DIX maps are obtained to reveal the variation of the TEC over an average quiet ionosphere background. In order to illustrate the use of the map index, the ionospheric disturbances after and during the 17–23 December 2015 intense geomagnetic storm and the 2015 Saint Patrick magnetic storm are discussed, highlighting the disturbances in the DIX at different latitudinal ranges and under different magnetic conditions.

中文翻译：

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基于TEC数据的电离层尺度指数图在空间天气研究和应用中的应用

本工作显示了基于干扰电离层指数（DIX）开发电离层尺度指数图的分析的初步结果。该指数旨在以一种简单明了的方法来定位受电离层干扰影响的所有不同用户组，例如导航，定位和卫星通信用户。因此，我们使用了南美的垂直总电子含量（VTEC）来计算总电子含量（TEC）图，该图涵盖了从60°S到20°N的纬度和从90°W到30°W的经度，以及0.5°× 0.5°分辨率。之后，获得DIX图，以揭示TEC在平均安静电离层背景上的变化。为了说明地图索引的使用，